Pileus Git - ~andy/gtk/blob - gtk/gtktreeview.c

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18
  19 #include "config.h"
  20
  21 #include <math.h>
  22 #include <string.h>
  23
  24 #include "gtktreeview.h"
  25
  26 #include "gtkadjustment.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtktypebuiltins.h"
  52 #include "gtkmain.h"
  53 #include "gtksettings.h"
  54 #include "gtkwidgetpath.h"
  55 #include "a11y/gtktreeviewaccessible.h"
  56
  57
  58 /**
  59  * SECTION:gtktreeview
  60  * @Short_description: A widget for displaying both trees and lists
  61  * @Title: GtkTreeView
  62  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  63  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  64  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  65  *   #GtkCellRendererText, #GtkCellRendererToggle
  66  *
  67  * Widget that displays any object that implements the #GtkTreeModel interface.
  68  *
  69  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  70  * overview</link> for an overview of all the objects and data types related
  71  * to the tree widget and how they work together.
  72  *
  73  * Several different coordinate systems are exposed in the GtkTreeView API.
  74  * These are:
  75  *
  76  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  77  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  78  * <varlistentry><term>Widget coordinates</term>
  79  * <listitem>
  80  * <para>
  81  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  82  * </para>
  83  * </listitem>
  84  * </varlistentry>
  85  * <varlistentry><term>Bin window coordinates</term>
  86  * <listitem>
  87  * <para>
  88  * Coordinates relative to the window that GtkTreeView renders to.
  89  * </para>
  90  * </listitem>
  91  * </varlistentry>
  92  * <varlistentry><term>Tree coordinates</term>
  93  * <listitem>
  94  * <para>
  95  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  96  * coordinates start at (0, 0) for row 0 of the tree.
  97  * </para>
  98  * </listitem>
  99  * </varlistentry>
 100  * </variablelist>
 101  *
 102  * Several functions are available for converting between the different
 103  * coordinate systems.  The most common translations are between widget and bin
 104  * window coordinates and between bin window and tree coordinates. For the
 105  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 106  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 107  * (and vice versa).
 108  *
 109  * <refsect2 id="GtkTreeView-BUILDER-UI">
 110  * <title>GtkTreeView as GtkBuildable</title>
 111  * The GtkTreeView implementation of the GtkBuildable interface accepts
 112  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 113  * internal #GtkTreeSelection in UI definitions.
 114  * <example>
 115  * <title>A UI definition fragment with GtkTreeView</title>
 116  * <programlisting><![CDATA[
 117  * <object class="GtkTreeView" id="treeview">
 118  *   <property name="model">liststore1</property>
 119  *   <child>
 120  *     <object class="GtkTreeViewColumn" id="test-column">
 121  *       <property name="title">Test</property>
 122  *       <child>
 123  *         <object class="GtkCellRendererText" id="test-renderer"/>
 124  *         <attributes>
 125  *           <attribute name="text">1</attribute>
 126  *         </attributes>
 127  *       </child>
 128  *     </object>
 129  *   </child>
 130  *   <child internal-child="selection">
 131  *     <object class="GtkTreeSelection" id="selection">
 132  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 133  *     </object>
 134  *   </child>
 135  * </object>
 136  * ]]></programlisting>
 137  * </example>
 138  * </refsect2>
 139  */
 140
 141 enum
 142 {
 143   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 144   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 146   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 147   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 148 };
 149
 150 enum
 151 {
 152   RUBBER_BAND_OFF = 0,
 153   RUBBER_BAND_MAYBE_START = 1,
 154   RUBBER_BAND_ACTIVE = 2
 155 };
 156
 157 typedef enum {
 158   CLEAR_AND_SELECT = (1 << 0),
 159   CLAMP_NODE       = (1 << 1),
 160   CURSOR_INVALID   = (1 << 2)
 161 } SetCursorFlags;
 162
 163  /* This lovely little value is used to determine how far away from the title bar
 164   * you can move the mouse and still have a column drag work.
 165   */
 166 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 167
 168 #ifdef __GNUC__
 169
 170 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 171      if (!(expr))                                                       \
 172        {                                                                \
 173          g_log (G_LOG_DOMAIN,                                           \
 174                 G_LOG_LEVEL_CRITICAL,                                   \
 175                 "%s (%s): assertion `%s' failed.\n"                     \
 176                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 177                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 178                 "without letting the view know.  Any display from now on is likely to\n"  \
 179                 "be incorrect.\n",                                                        \
 180                 G_STRLOC,                                               \
 181                 G_STRFUNC,                                              \
 182                 #expr);                                                 \
 183          return ret;                                                    \
 184        };                               }G_STMT_END
 185
 186 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 187      if (!(expr))                                                       \
 188        {                                                                \
 189          g_log (G_LOG_DOMAIN,                                           \
 190                 G_LOG_LEVEL_CRITICAL,                                   \
 191                 "%s (%s): assertion `%s' failed.\n"                     \
 192                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 193                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 194                 "without letting the view know.  Any display from now on is likely to\n"  \
 195                 "be incorrect.\n",                                                        \
 196                 G_STRLOC,                                               \
 197                 G_STRFUNC,                                              \
 198                 #expr);                                                 \
 199          return;                                                        \
 200        };                               }G_STMT_END
 201
 202 #else
 203
 204 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 205      if (!(expr))                                                       \
 206        {                                                                \
 207          g_log (G_LOG_DOMAIN,                                           \
 208                 G_LOG_LEVEL_CRITICAL,                                   \
 209                 "file %s: line %d: assertion `%s' failed.\n"       \
 210                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 211                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 212                 "without letting the view know.  Any display from now on is likely to\n"  \
 213                 "be incorrect.\n",                                                        \
 214                 __FILE__,                                               \
 215                 __LINE__,                                               \
 216                 #expr);                                                 \
 217          return ret;                                                    \
 218        };                               }G_STMT_END
 219
 220 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 221      if (!(expr))                                                       \
 222        {                                                                \
 223          g_log (G_LOG_DOMAIN,                                           \
 224                 G_LOG_LEVEL_CRITICAL,                                   \
 225                 "file %s: line %d: assertion '%s' failed.\n"            \
 226                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 227                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 228                 "without letting the view know.  Any display from now on is likely to\n"  \
 229                 "be incorrect.\n",                                                        \
 230                 __FILE__,                                               \
 231                 __LINE__,                                               \
 232                 #expr);                                                 \
 233          return;                                                        \
 234        };                               }G_STMT_END
 235 #endif
 236
 237 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 238 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 239 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 240 #define SCROLL_EDGE_SIZE 15
 241 #define EXPANDER_EXTRA_PADDING 4
 242 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 243 #define AUTO_EXPAND_TIMEOUT 500
 244
 245 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 246  * vice versa.
 247  */
 248 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 249 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 250
 251 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 252 struct _GtkTreeViewColumnReorder
 253 {
 254   gint left_align;
 255   gint right_align;
 256   GtkTreeViewColumn *left_column;
 257   GtkTreeViewColumn *right_column;
 258 };
 259
 260 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 261 struct _GtkTreeViewChild
 262 {
 263   GtkWidget *widget;
 264   gint x;
 265   gint y;
 266   gint width;
 267   gint height;
 268 };
 269
 270
 271 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 272 struct _TreeViewDragInfo
 273 {
 274   GdkModifierType start_button_mask;
 275   GtkTargetList *_unused_source_target_list;
 276   GdkDragAction source_actions;
 277
 278   GtkTargetList *_unused_dest_target_list;
 279
 280   guint source_set : 1;
 281   guint dest_set : 1;
 282 };
 283
 284
 285 struct _GtkTreeViewPrivate
 286 {
 287   GtkTreeModel *model;
 288
 289   /* tree information */
 290   GtkRBTree *tree;
 291
 292   /* Container info */
 293   GList *children;
 294   gint width;
 295   gint height;
 296
 297   /* Adjustments */
 298   GtkAdjustment *hadjustment;
 299   GtkAdjustment *vadjustment;
 300   gint           min_display_width;
 301   gint           min_display_height;
 302
 303   /* Sub windows */
 304   GdkWindow *bin_window;
 305   GdkWindow *header_window;
 306
 307   /* Scroll position state keeping */
 308   GtkTreeRowReference *top_row;
 309   gint top_row_dy;
 310   /* dy == y pos of top_row + top_row_dy */
 311   /* we cache it for simplicity of the code */
 312   gint dy;
 313
 314   guint presize_handler_timer;
 315   guint validate_rows_timer;
 316   guint scroll_sync_timer;
 317
 318   /* Indentation and expander layout */
 319   GtkTreeViewColumn *expander_column;
 320
 321   gint level_indentation;
 322
 323   /* Key navigation (focus), selection */
 324   gint cursor_offset;
 325
 326   GtkTreeRowReference *anchor;
 327   GtkRBNode *cursor_node;
 328   GtkRBTree *cursor_tree;
 329
 330   GtkTreeViewColumn *focus_column;
 331
 332   /* Current pressed node, previously pressed, prelight */
 333   GtkRBNode *button_pressed_node;
 334   GtkRBTree *button_pressed_tree;
 335
 336   gint pressed_button;
 337   gint press_start_x;
 338   gint press_start_y;
 339
 340   gint event_last_x;
 341   gint event_last_y;
 342
 343   guint last_button_time;
 344   gint last_button_x;
 345   gint last_button_y;
 346
 347   GtkRBNode *prelight_node;
 348   GtkRBTree *prelight_tree;
 349
 350   /* Cell Editing */
 351   GtkTreeViewColumn *edited_column;
 352
 353   /* The node that's currently being collapsed or expanded */
 354   GtkRBNode *expanded_collapsed_node;
 355   GtkRBTree *expanded_collapsed_tree;
 356   guint expand_collapse_timeout;
 357
 358   /* Auto expand/collapse timeout in hover mode */
 359   guint auto_expand_timeout;
 360
 361   /* Selection information */
 362   GtkTreeSelection *selection;
 363
 364   /* Header information */
 365   gint n_columns;
 366   GList *columns;
 367   gint header_height;
 368
 369   GtkTreeViewColumnDropFunc column_drop_func;
 370   gpointer column_drop_func_data;
 371   GDestroyNotify column_drop_func_data_destroy;
 372   GList *column_drag_info;
 373   GtkTreeViewColumnReorder *cur_reorder;
 374
 375   gint prev_width_before_expander;
 376
 377   /* Interactive Header reordering */
 378   GdkWindow *drag_window;
 379   GdkWindow *drag_highlight_window;
 380   GtkTreeViewColumn *drag_column;
 381   gint drag_column_x;
 382
 383   /* Interactive Header Resizing */
 384   gint drag_pos;
 385   gint x_drag;
 386
 387   /* Non-interactive Header Resizing, expand flag support */
 388   gint prev_width;
 389
 390   gint last_extra_space;
 391   gint last_extra_space_per_column;
 392   gint last_number_of_expand_columns;
 393
 394   /* ATK Hack */
 395   GtkTreeDestroyCountFunc destroy_count_func;
 396   gpointer destroy_count_data;
 397   GDestroyNotify destroy_count_destroy;
 398
 399   /* Scroll timeout (e.g. during dnd, rubber banding) */
 400   guint scroll_timeout;
 401
 402   /* Row drag-and-drop */
 403   GtkTreeRowReference *drag_dest_row;
 404   GtkTreeViewDropPosition drag_dest_pos;
 405   guint open_dest_timeout;
 406
 407   /* Rubber banding */
 408   gint rubber_band_status;
 409   gint rubber_band_x;
 410   gint rubber_band_y;
 411   gint rubber_band_extend;
 412   gint rubber_band_modify;
 413
 414   GtkRBNode *rubber_band_start_node;
 415   GtkRBTree *rubber_band_start_tree;
 416
 417   GtkRBNode *rubber_band_end_node;
 418   GtkRBTree *rubber_band_end_tree;
 419
 420   /* fixed height */
 421   gint fixed_height;
 422
 423   /* Scroll-to functionality when unrealized */
 424   GtkTreeRowReference *scroll_to_path;
 425   GtkTreeViewColumn *scroll_to_column;
 426   gfloat scroll_to_row_align;
 427   gfloat scroll_to_col_align;
 428
 429   /* Interactive search */
 430   gint selected_iter;
 431   gint search_column;
 432   GtkTreeViewSearchPositionFunc search_position_func;
 433   GtkTreeViewSearchEqualFunc search_equal_func;
 434   gpointer search_user_data;
 435   GDestroyNotify search_destroy;
 436   gpointer search_position_user_data;
 437   GDestroyNotify search_position_destroy;
 438   GtkWidget *search_window;
 439   GtkWidget *search_entry;
 440   gulong search_entry_changed_id;
 441   guint typeselect_flush_timeout;
 442
 443   /* Grid and tree lines */
 444   GtkTreeViewGridLines grid_lines;
 445   double grid_line_dashes[2];
 446   int grid_line_width;
 447
 448   gboolean tree_lines_enabled;
 449   double tree_line_dashes[2];
 450   int tree_line_width;
 451
 452   /* Row separators */
 453   GtkTreeViewRowSeparatorFunc row_separator_func;
 454   gpointer row_separator_data;
 455   GDestroyNotify row_separator_destroy;
 456
 457   /* Tooltip support */
 458   gint tooltip_column;
 459
 460   /* Here comes the bitfield */
 461   guint scroll_to_use_align : 1;
 462
 463   guint fixed_height_mode : 1;
 464   guint fixed_height_check : 1;
 465
 466   guint reorderable : 1;
 467   guint header_has_focus : 1;
 468   guint drag_column_window_state : 3;
 469   /* hint to display rows in alternating colors */
 470   guint has_rules : 1;
 471   guint mark_rows_col_dirty : 1;
 472
 473   /* for DnD */
 474   guint empty_view_drop : 1;
 475
 476   guint modify_selection_pressed : 1;
 477   guint extend_selection_pressed : 1;
 478
 479   guint init_hadjust_value : 1;
 480
 481   guint in_top_row_to_dy : 1;
 482
 483   /* interactive search */
 484   guint enable_search : 1;
 485   guint disable_popdown : 1;
 486   guint search_custom_entry_set : 1;
 487
 488   guint hover_selection : 1;
 489   guint hover_expand : 1;
 490   guint imcontext_changed : 1;
 491
 492   guint rubber_banding_enable : 1;
 493
 494   guint in_grab : 1;
 495
 496   guint post_validation_flag : 1;
 497
 498   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 499   guint search_entry_avoid_unhandled_binding : 1;
 500
 501   /* GtkScrollablePolicy needs to be checked when
 502    * driving the scrollable adjustment values */
 503   guint hscroll_policy : 1;
 504   guint vscroll_policy : 1;
 505
 506   /* GtkTreeView flags */
 507   guint is_list : 1;
 508   guint show_expanders : 1;
 509   guint in_column_resize : 1;
 510   guint arrow_prelit : 1;
 511   guint headers_visible : 1;
 512   guint draw_keyfocus : 1;
 513   guint model_setup : 1;
 514   guint in_column_drag : 1;
 515 };
 516
 517
 518 /* Signals */
 519 enum
 520 {
 521   ROW_ACTIVATED,
 522   TEST_EXPAND_ROW,
 523   TEST_COLLAPSE_ROW,
 524   ROW_EXPANDED,
 525   ROW_COLLAPSED,
 526   COLUMNS_CHANGED,
 527   CURSOR_CHANGED,
 528   MOVE_CURSOR,
 529   SELECT_ALL,
 530   UNSELECT_ALL,
 531   SELECT_CURSOR_ROW,
 532   TOGGLE_CURSOR_ROW,
 533   EXPAND_COLLAPSE_CURSOR_ROW,
 534   SELECT_CURSOR_PARENT,
 535   START_INTERACTIVE_SEARCH,
 536   LAST_SIGNAL
 537 };
 538
 539 /* Properties */
 540 enum {
 541   PROP_0,
 542   PROP_MODEL,
 543   PROP_HADJUSTMENT,
 544   PROP_VADJUSTMENT,
 545   PROP_HSCROLL_POLICY,
 546   PROP_VSCROLL_POLICY,
 547   PROP_HEADERS_VISIBLE,
 548   PROP_HEADERS_CLICKABLE,
 549   PROP_EXPANDER_COLUMN,
 550   PROP_REORDERABLE,
 551   PROP_RULES_HINT,
 552   PROP_ENABLE_SEARCH,
 553   PROP_SEARCH_COLUMN,
 554   PROP_FIXED_HEIGHT_MODE,
 555   PROP_HOVER_SELECTION,
 556   PROP_HOVER_EXPAND,
 557   PROP_SHOW_EXPANDERS,
 558   PROP_LEVEL_INDENTATION,
 559   PROP_RUBBER_BANDING,
 560   PROP_ENABLE_GRID_LINES,
 561   PROP_ENABLE_TREE_LINES,
 562   PROP_TOOLTIP_COLUMN
 563 };
 564
 565 /* object signals */
 566 static void     gtk_tree_view_finalize             (GObject          *object);
 567 static void     gtk_tree_view_set_property         (GObject         *object,
 568                                                     guint            prop_id,
 569                                                     const GValue    *value,
 570                                                     GParamSpec      *pspec);
 571 static void     gtk_tree_view_get_property         (GObject         *object,
 572                                                     guint            prop_id,
 573                                                     GValue          *value,
 574                                                     GParamSpec      *pspec);
 575
 576 /* gtkwidget signals */
 577 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 578 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 579 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 580 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 581 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 582                                                     gint             *minimum,
 583                                                     gint             *natural);
 584 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 585                                                     gint             *minimum,
 586                                                     gint             *natural);
 587 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 588                                                     GtkRequisition   *requisition,
 589                                                     gboolean          may_validate);
 590 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 591                                                     GtkAllocation    *allocation);
 592 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 593                                                     cairo_t          *cr);
 594 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 595                                                     GdkEventKey      *event);
 596 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 597                                                     GdkEventKey      *event);
 598 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 599                                                     GdkEventMotion   *event);
 600 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 601                                                     GdkEventCrossing *event);
 602 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 603                                                     GdkEventCrossing *event);
 604 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 605                                                     GdkEventButton   *event);
 606 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 607                                                     GdkEventButton   *event);
 608 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 609                                                     GdkEventGrabBroken *event);
 610 #if 0
 611 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 612                                                     GdkEventConfigure *event);
 613 #endif
 614
 615 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 616                                                          GtkWidget    *child);
 617
 618 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 619                                                     GtkWidget        *child);
 620 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 621                                                     GdkEventFocus    *event);
 622 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 623                                                     GtkDirectionType  direction);
 624 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 625 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 626 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 627                                                     gboolean          was_grabbed);
 628 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 629                                                     GtkStateFlags     previous_state);
 630
 631 /* container signals */
 632 static void     gtk_tree_view_remove               (GtkContainer     *container,
 633                                                     GtkWidget        *widget);
 634 static void     gtk_tree_view_forall               (GtkContainer     *container,
 635                                                     gboolean          include_internals,
 636                                                     GtkCallback       callback,
 637                                                     gpointer          callback_data);
 638
 639 /* Source side drag signals */
 640 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 641                                             GdkDragContext   *context);
 642 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 643                                             GdkDragContext   *context);
 644 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 645                                             GdkDragContext   *context,
 646                                             GtkSelectionData *selection_data,
 647                                             guint             info,
 648                                             guint             time);
 649 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 650                                             GdkDragContext   *context);
 651
 652 /* Target side drag signals */
 653 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 654                                                   GdkDragContext   *context,
 655                                                   guint             time);
 656 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 657                                                   GdkDragContext   *context,
 658                                                   gint              x,
 659                                                   gint              y,
 660                                                   guint             time);
 661 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 662                                                   GdkDragContext   *context,
 663                                                   gint              x,
 664                                                   gint              y,
 665                                                   guint             time);
 666 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 667                                                   GdkDragContext   *context,
 668                                                   gint              x,
 669                                                   gint              y,
 670                                                   GtkSelectionData *selection_data,
 671                                                   guint             info,
 672                                                   guint             time);
 673
 674 /* tree_model signals */
 675 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 676                                                            GtkMovementStep  step,
 677                                                            gint             count);
 678 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 680 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 681                                                            gboolean         start_editing);
 682 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 683 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 684                                                                gboolean         logical,
 685                                                                gboolean         expand,
 686                                                                gboolean         open_all);
 687 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 688 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 689                                                            GtkTreePath     *path,
 690                                                            GtkTreeIter     *iter,
 691                                                            gpointer         data);
 692 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 693                                                            GtkTreePath     *path,
 694                                                            GtkTreeIter     *iter,
 695                                                            gpointer         data);
 696 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 697                                                            GtkTreePath     *path,
 698                                                            GtkTreeIter     *iter,
 699                                                            gpointer         data);
 700 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 701                                                            GtkTreePath     *path,
 702                                                            gpointer         data);
 703 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 704                                                            GtkTreePath     *parent,
 705                                                            GtkTreeIter     *iter,
 706                                                            gint            *new_order,
 707                                                            gpointer         data);
 708
 709 /* Incremental reflow */
 710 static gboolean validate_row             (GtkTreeView *tree_view,
 711                                           GtkRBTree   *tree,
 712                                           GtkRBNode   *node,
 713                                           GtkTreeIter *iter,
 714                                           GtkTreePath *path);
 715 static void     validate_visible_area    (GtkTreeView *tree_view);
 716 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 717 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 718                                           gboolean     size_request);
 719 static gboolean validate_rows            (GtkTreeView *tree_view);
 720 static gboolean presize_handler_callback (gpointer     data);
 721 static void     install_presize_handler  (GtkTreeView *tree_view);
 722 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 723 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 724                                              GtkTreePath *path,
 725                                              gint         offset);
 726 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 727 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 728 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 729
 730 /* Internal functions */
 731 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 732                                                               GtkTreeViewColumn  *column);
 733 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 734 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 735                                                               guint               keyval,
 736                                                               guint               modmask,
 737                                                               gboolean            add_shifted_binding,
 738                                                               GtkMovementStep     step,
 739                                                               gint                count);
 740 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 741                                                               GtkRBTree          *tree);
 742 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 743                                                               GtkTreePath        *path,
 744                                                               const GdkRectangle *clip_rect);
 745 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 746                                                               GtkRBTree          *tree,
 747                                                               GtkRBNode          *node);
 748 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 749                                                               cairo_t            *cr,
 750                                                               GtkRBTree          *tree,
 751                                                               GtkRBNode          *node);
 752 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 753                                                               GtkRBTree          *tree,
 754                                                               gint               *x1,
 755                                                               gint               *x2);
 756 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 757                                                               gint                i,
 758                                                               gint               *x);
 759 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 760                                                               GtkTreeView        *tree_view);
 761 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 762                                                               GtkRBTree          *tree,
 763                                                               GtkTreeIter        *iter,
 764                                                               gint                depth,
 765                                                               gboolean            recurse);
 766 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 767                                                               GtkRBTree          *tree,
 768                                                               GtkRBNode          *node);
 769 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 770                                                               GtkTreeViewColumn  *column,
 771                                                               gboolean            focus_to_cell);
 772 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 773                                                               GdkEventMotion     *event);
 774 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 775 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 776                                                               gint                count);
 777 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 778                                                               gint                count);
 779 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 780                                                               gint                count);
 781 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 782                                                               gint                count);
 783 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 784                                                               GtkTreePath        *path,
 785                                                               GtkRBTree          *tree,
 786                                                               GtkRBNode          *node,
 787                                                               gboolean            animate);
 788 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 789                                                               GtkTreePath        *path,
 790                                                               GtkRBTree          *tree,
 791                                                               GtkRBNode          *node,
 792                                                               gboolean            open_all,
 793                                                               gboolean            animate);
 794 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 795                                                               GtkTreePath        *path,
 796                                                               SetCursorFlags      flags);
 797 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 798 static void     column_sizing_notify                         (GObject            *object,
 799                                                               GParamSpec         *pspec,
 800                                                               gpointer            data);
 801 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 802 static void     update_prelight                              (GtkTreeView        *tree_view,
 803                                                               int                 x,
 804                                                               int                 y);
 805
 806 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 807
 808 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 809                                                               GtkRBTree   *tree,
 810                                                               GtkRBNode   *node,
 811                                                               gint         vertical_separator);
 812 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 813                                                               GtkRBNode   *node,
 814                                                               gint         vertical_separator);
 815
 816 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 817                                                               GtkRBTree   *tree,
 818                                                               GtkRBNode   *node);
 819 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 820                                                               GtkRBNode   *node);
 821
 822 /* interactive search */
 823 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 824 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 825                                                          GtkTreeView      *tree_view,
 826                                                          GdkDevice        *device);
 827 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 828                                                          GtkWidget        *search_dialog,
 829                                                          gpointer          user_data);
 830 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 831                                                          GtkMenu          *menu,
 832                                                          gpointer          data);
 833 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 834                                                          GtkTreeView      *tree_view);
 835 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 836                                                          GtkTreeView      *tree_view);
 837 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 838 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 839                                                          gpointer          data);
 840 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 841                                                          GdkEventAny      *event,
 842                                                          GtkTreeView      *tree_view);
 843 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 844                                                          GdkEventButton   *event,
 845                                                          GtkTreeView      *tree_view);
 846 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 847                                                          GdkEventScroll   *event,
 848                                                          GtkTreeView      *tree_view);
 849 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 850                                                          GdkEventKey      *event,
 851                                                          GtkTreeView      *tree_view);
 852 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 853                                                          GtkTreeView      *tree_view,
 854                                                          gboolean          up);
 855 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 856                                                          gint              column,
 857                                                          const gchar      *key,
 858                                                          GtkTreeIter      *iter,
 859                                                          gpointer          search_data);
 860 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 861                                                          GtkTreeSelection *selection,
 862                                                          GtkTreeIter      *iter,
 863                                                          const gchar      *text,
 864                                                          gint             *count,
 865                                                          gint              n);
 866 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 867                                                          GtkTreeView      *tree_view);
 868 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 869                                                          GtkWidget        *child_widget,
 870                                                          gint              x,
 871                                                          gint              y,
 872                                                          gint              width,
 873                                                          gint              height);
 874 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 875                                                          GtkTreePath      *cursor_path,
 876                                                          gboolean          edit_only);
 877 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 878                                                          gboolean     cancel_editing);
 879 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 880                                                              GdkDevice   *device,
 881                                                              gboolean     keybinding);
 882 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 883 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 884                                                          GtkTreeViewColumn *column,
 885                                                          gint               drop_position);
 886
 887 /* GtkBuildable */
 888 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 889                                                             GtkBuilder        *builder,
 890                                                             GObject           *child,
 891                                                             const gchar       *type);
 892 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 893                                                             GtkBuilder        *builder,
 894                                                             const gchar       *childname);
 895 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 896
 897 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 898 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 899                                                         GtkAdjustment *adjustment);
 900 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 901 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 902                                                         GtkAdjustment *adjustment);
 903
 904 static gboolean scroll_row_timeout                   (gpointer     data);
 905 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 906 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 907
 908 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 909
 910 \f
 911
 912 /* GType Methods
 913  */
 914
 915 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 916                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 917                                                 gtk_tree_view_buildable_init)
 918                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 919
 920 static void
 921 gtk_tree_view_class_init (GtkTreeViewClass *class)
 922 {
 923   GObjectClass *o_class;
 924   GtkWidgetClass *widget_class;
 925   GtkContainerClass *container_class;
 926   GtkBindingSet *binding_set;
 927
 928   binding_set = gtk_binding_set_by_class (class);
 929
 930   o_class = (GObjectClass *) class;
 931   widget_class = (GtkWidgetClass *) class;
 932   container_class = (GtkContainerClass *) class;
 933
 934   /* GObject signals */
 935   o_class->set_property = gtk_tree_view_set_property;
 936   o_class->get_property = gtk_tree_view_get_property;
 937   o_class->finalize = gtk_tree_view_finalize;
 938
 939   /* GtkWidget signals */
 940   widget_class->destroy = gtk_tree_view_destroy;
 941   widget_class->map = gtk_tree_view_map;
 942   widget_class->realize = gtk_tree_view_realize;
 943   widget_class->unrealize = gtk_tree_view_unrealize;
 944   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 945   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 946   widget_class->size_allocate = gtk_tree_view_size_allocate;
 947   widget_class->button_press_event = gtk_tree_view_button_press;
 948   widget_class->button_release_event = gtk_tree_view_button_release;
 949   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 950   /*widget_class->configure_event = gtk_tree_view_configure;*/
 951   widget_class->motion_notify_event = gtk_tree_view_motion;
 952   widget_class->draw = gtk_tree_view_draw;
 953   widget_class->key_press_event = gtk_tree_view_key_press;
 954   widget_class->key_release_event = gtk_tree_view_key_release;
 955   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 956   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 957   widget_class->focus_out_event = gtk_tree_view_focus_out;
 958   widget_class->drag_begin = gtk_tree_view_drag_begin;
 959   widget_class->drag_end = gtk_tree_view_drag_end;
 960   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 961   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 962   widget_class->drag_leave = gtk_tree_view_drag_leave;
 963   widget_class->drag_motion = gtk_tree_view_drag_motion;
 964   widget_class->drag_drop = gtk_tree_view_drag_drop;
 965   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 966   widget_class->focus = gtk_tree_view_focus;
 967   widget_class->grab_focus = gtk_tree_view_grab_focus;
 968   widget_class->style_updated = gtk_tree_view_style_updated;
 969   widget_class->grab_notify = gtk_tree_view_grab_notify;
 970   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 971
 972   /* GtkContainer signals */
 973   container_class->remove = gtk_tree_view_remove;
 974   container_class->forall = gtk_tree_view_forall;
 975   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 976   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 977
 978   class->move_cursor = gtk_tree_view_real_move_cursor;
 979   class->select_all = gtk_tree_view_real_select_all;
 980   class->unselect_all = gtk_tree_view_real_unselect_all;
 981   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 982   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 983   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 984   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 985   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 986
 987   /* Properties */
 988
 989   g_object_class_install_property (o_class,
 990                                    PROP_MODEL,
 991                                    g_param_spec_object ("model",
 992                                                         P_("TreeView Model"),
 993                                                         P_("The model for the tree view"),
 994                                                         GTK_TYPE_TREE_MODEL,
 995                                                         GTK_PARAM_READWRITE));
 996
 997   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 998   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 999   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
1000   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
1001
1002   g_object_class_install_property (o_class,
1003                                    PROP_HEADERS_VISIBLE,
1004                                    g_param_spec_boolean ("headers-visible",
1005                                                          P_("Headers Visible"),
1006                                                          P_("Show the column header buttons"),
1007                                                          TRUE,
1008                                                          GTK_PARAM_READWRITE));
1009
1010   g_object_class_install_property (o_class,
1011                                    PROP_HEADERS_CLICKABLE,
1012                                    g_param_spec_boolean ("headers-clickable",
1013                                                          P_("Headers Clickable"),
1014                                                          P_("Column headers respond to click events"),
1015                                                          TRUE,
1016                                                          GTK_PARAM_READWRITE));
1017
1018   g_object_class_install_property (o_class,
1019                                    PROP_EXPANDER_COLUMN,
1020                                    g_param_spec_object ("expander-column",
1021                                                         P_("Expander Column"),
1022                                                         P_("Set the column for the expander column"),
1023                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1024                                                         GTK_PARAM_READWRITE));
1025
1026   g_object_class_install_property (o_class,
1027                                    PROP_REORDERABLE,
1028                                    g_param_spec_boolean ("reorderable",
1029                                                          P_("Reorderable"),
1030                                                          P_("View is reorderable"),
1031                                                          FALSE,
1032                                                          GTK_PARAM_READWRITE));
1033
1034   g_object_class_install_property (o_class,
1035                                    PROP_RULES_HINT,
1036                                    g_param_spec_boolean ("rules-hint",
1037                                                          P_("Rules Hint"),
1038                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1039                                                          FALSE,
1040                                                          GTK_PARAM_READWRITE));
1041
1042     g_object_class_install_property (o_class,
1043                                      PROP_ENABLE_SEARCH,
1044                                      g_param_spec_boolean ("enable-search",
1045                                                            P_("Enable Search"),
1046                                                            P_("View allows user to search through columns interactively"),
1047                                                            TRUE,
1048                                                            GTK_PARAM_READWRITE));
1049
1050     g_object_class_install_property (o_class,
1051                                      PROP_SEARCH_COLUMN,
1052                                      g_param_spec_int ("search-column",
1053                                                        P_("Search Column"),
1054                                                        P_("Model column to search through during interactive search"),
1055                                                        -1,
1056                                                        G_MAXINT,
1057                                                        -1,
1058                                                        GTK_PARAM_READWRITE));
1059
1060     /**
1061      * GtkTreeView:fixed-height-mode:
1062      *
1063      * Setting the ::fixed-height-mode property to %TRUE speeds up
1064      * #GtkTreeView by assuming that all rows have the same height.
1065      * Only enable this option if all rows are the same height.
1066      * Please see gtk_tree_view_set_fixed_height_mode() for more
1067      * information on this option.
1068      *
1069      * Since: 2.4
1070      **/
1071     g_object_class_install_property (o_class,
1072                                      PROP_FIXED_HEIGHT_MODE,
1073                                      g_param_spec_boolean ("fixed-height-mode",
1074                                                            P_("Fixed Height Mode"),
1075                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1076                                                            FALSE,
1077                                                            GTK_PARAM_READWRITE));
1078
1079     /**
1080      * GtkTreeView:hover-selection:
1081      *
1082      * Enables or disables the hover selection mode of @tree_view.
1083      * Hover selection makes the selected row follow the pointer.
1084      * Currently, this works only for the selection modes
1085      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1086      *
1087      * This mode is primarily intended for treeviews in popups, e.g.
1088      * in #GtkComboBox or #GtkEntryCompletion.
1089      *
1090      * Since: 2.6
1091      */
1092     g_object_class_install_property (o_class,
1093                                      PROP_HOVER_SELECTION,
1094                                      g_param_spec_boolean ("hover-selection",
1095                                                            P_("Hover Selection"),
1096                                                            P_("Whether the selection should follow the pointer"),
1097                                                            FALSE,
1098                                                            GTK_PARAM_READWRITE));
1099
1100     /**
1101      * GtkTreeView:hover-expand:
1102      *
1103      * Enables or disables the hover expansion mode of @tree_view.
1104      * Hover expansion makes rows expand or collapse if the pointer moves
1105      * over them.
1106      *
1107      * This mode is primarily intended for treeviews in popups, e.g.
1108      * in #GtkComboBox or #GtkEntryCompletion.
1109      *
1110      * Since: 2.6
1111      */
1112     g_object_class_install_property (o_class,
1113                                      PROP_HOVER_EXPAND,
1114                                      g_param_spec_boolean ("hover-expand",
1115                                                            P_("Hover Expand"),
1116                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1117                                                            FALSE,
1118                                                            GTK_PARAM_READWRITE));
1119
1120     /**
1121      * GtkTreeView:show-expanders:
1122      *
1123      * %TRUE if the view has expanders.
1124      *
1125      * Since: 2.12
1126      */
1127     g_object_class_install_property (o_class,
1128                                      PROP_SHOW_EXPANDERS,
1129                                      g_param_spec_boolean ("show-expanders",
1130                                                            P_("Show Expanders"),
1131                                                            P_("View has expanders"),
1132                                                            TRUE,
1133                                                            GTK_PARAM_READWRITE));
1134
1135     /**
1136      * GtkTreeView:level-indentation:
1137      *
1138      * Extra indentation for each level.
1139      *
1140      * Since: 2.12
1141      */
1142     g_object_class_install_property (o_class,
1143                                      PROP_LEVEL_INDENTATION,
1144                                      g_param_spec_int ("level-indentation",
1145                                                        P_("Level Indentation"),
1146                                                        P_("Extra indentation for each level"),
1147                                                        0,
1148                                                        G_MAXINT,
1149                                                        0,
1150                                                        GTK_PARAM_READWRITE));
1151
1152     g_object_class_install_property (o_class,
1153                                      PROP_RUBBER_BANDING,
1154                                      g_param_spec_boolean ("rubber-banding",
1155                                                            P_("Rubber Banding"),
1156                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1157                                                            FALSE,
1158                                                            GTK_PARAM_READWRITE));
1159
1160     g_object_class_install_property (o_class,
1161                                      PROP_ENABLE_GRID_LINES,
1162                                      g_param_spec_enum ("enable-grid-lines",
1163                                                         P_("Enable Grid Lines"),
1164                                                         P_("Whether grid lines should be drawn in the tree view"),
1165                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1166                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1167                                                         GTK_PARAM_READWRITE));
1168
1169     g_object_class_install_property (o_class,
1170                                      PROP_ENABLE_TREE_LINES,
1171                                      g_param_spec_boolean ("enable-tree-lines",
1172                                                            P_("Enable Tree Lines"),
1173                                                            P_("Whether tree lines should be drawn in the tree view"),
1174                                                            FALSE,
1175                                                            GTK_PARAM_READWRITE));
1176
1177     g_object_class_install_property (o_class,
1178                                      PROP_TOOLTIP_COLUMN,
1179                                      g_param_spec_int ("tooltip-column",
1180                                                        P_("Tooltip Column"),
1181                                                        P_("The column in the model containing the tooltip texts for the rows"),
1182                                                        -1,
1183                                                        G_MAXINT,
1184                                                        -1,
1185                                                        GTK_PARAM_READWRITE));
1186
1187   /* Style properties */
1188 #define _TREE_VIEW_EXPANDER_SIZE 14
1189 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1190 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1191
1192   gtk_widget_class_install_style_property (widget_class,
1193                                            g_param_spec_int ("expander-size",
1194                                                              P_("Expander Size"),
1195                                                              P_("Size of the expander arrow"),
1196                                                              0,
1197                                                              G_MAXINT,
1198                                                              _TREE_VIEW_EXPANDER_SIZE,
1199                                                              GTK_PARAM_READABLE));
1200
1201   gtk_widget_class_install_style_property (widget_class,
1202                                            g_param_spec_int ("vertical-separator",
1203                                                              P_("Vertical Separator Width"),
1204                                                              P_("Vertical space between cells.  Must be an even number"),
1205                                                              0,
1206                                                              G_MAXINT,
1207                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1208                                                              GTK_PARAM_READABLE));
1209
1210   gtk_widget_class_install_style_property (widget_class,
1211                                            g_param_spec_int ("horizontal-separator",
1212                                                              P_("Horizontal Separator Width"),
1213                                                              P_("Horizontal space between cells.  Must be an even number"),
1214                                                              0,
1215                                                              G_MAXINT,
1216                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1217                                                              GTK_PARAM_READABLE));
1218
1219   gtk_widget_class_install_style_property (widget_class,
1220                                            g_param_spec_boolean ("allow-rules",
1221                                                                  P_("Allow Rules"),
1222                                                                  P_("Allow drawing of alternating color rows"),
1223                                                                  TRUE,
1224                                                                  GTK_PARAM_READABLE));
1225
1226   gtk_widget_class_install_style_property (widget_class,
1227                                            g_param_spec_boolean ("indent-expanders",
1228                                                                  P_("Indent Expanders"),
1229                                                                  P_("Make the expanders indented"),
1230                                                                  TRUE,
1231                                                                  GTK_PARAM_READABLE));
1232
1233   gtk_widget_class_install_style_property (widget_class,
1234                                            g_param_spec_boxed ("even-row-color",
1235                                                                P_("Even Row Color"),
1236                                                                P_("Color to use for even rows"),
1237                                                                GDK_TYPE_COLOR,
1238                                                                GTK_PARAM_READABLE));
1239
1240   gtk_widget_class_install_style_property (widget_class,
1241                                            g_param_spec_boxed ("odd-row-color",
1242                                                                P_("Odd Row Color"),
1243                                                                P_("Color to use for odd rows"),
1244                                                                GDK_TYPE_COLOR,
1245                                                                GTK_PARAM_READABLE));
1246
1247   gtk_widget_class_install_style_property (widget_class,
1248                                            g_param_spec_int ("grid-line-width",
1249                                                              P_("Grid line width"),
1250                                                              P_("Width, in pixels, of the tree view grid lines"),
1251                                                              0, G_MAXINT, 1,
1252                                                              GTK_PARAM_READABLE));
1253
1254   gtk_widget_class_install_style_property (widget_class,
1255                                            g_param_spec_int ("tree-line-width",
1256                                                              P_("Tree line width"),
1257                                                              P_("Width, in pixels, of the tree view lines"),
1258                                                              0, G_MAXINT, 1,
1259                                                              GTK_PARAM_READABLE));
1260
1261   gtk_widget_class_install_style_property (widget_class,
1262                                            g_param_spec_string ("grid-line-pattern",
1263                                                                 P_("Grid line pattern"),
1264                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1265                                                                 "\1\1",
1266                                                                 GTK_PARAM_READABLE));
1267
1268   gtk_widget_class_install_style_property (widget_class,
1269                                            g_param_spec_string ("tree-line-pattern",
1270                                                                 P_("Tree line pattern"),
1271                                                                 P_("Dash pattern used to draw the tree view lines"),
1272                                                                 "\1\1",
1273                                                                 GTK_PARAM_READABLE));
1274
1275   /* Signals */
1276   /**
1277    * GtkTreeView::row-activated:
1278    * @tree_view: the object on which the signal is emitted
1279    * @path: the #GtkTreePath for the activated row
1280    * @column: the #GtkTreeViewColumn in which the activation occurred
1281    *
1282    * The "row-activated" signal is emitted when the method
1283    * gtk_tree_view_row_activated() is called or the user double clicks
1284    * a treeview row. It is also emitted when a non-editable row is
1285    * selected and one of the keys: Space, Shift+Space, Return or
1286    * Enter is pressed.
1287    *
1288    * For selection handling refer to the <link linkend="TreeWidget">tree
1289    * widget conceptual overview</link> as well as #GtkTreeSelection.
1290    */
1291   tree_view_signals[ROW_ACTIVATED] =
1292     g_signal_new (I_("row-activated"),
1293                   G_TYPE_FROM_CLASS (o_class),
1294                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1295                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1296                   NULL, NULL,
1297                   _gtk_marshal_VOID__BOXED_OBJECT,
1298                   G_TYPE_NONE, 2,
1299                   GTK_TYPE_TREE_PATH,
1300                   GTK_TYPE_TREE_VIEW_COLUMN);
1301
1302   /**
1303    * GtkTreeView::test-expand-row:
1304    * @tree_view: the object on which the signal is emitted
1305    * @iter: the tree iter of the row to expand
1306    * @path: a tree path that points to the row
1307    *
1308    * The given row is about to be expanded (show its children nodes). Use this
1309    * signal if you need to control the expandability of individual rows.
1310    *
1311    * Returns: %FALSE to allow expansion, %TRUE to reject
1312    */
1313   tree_view_signals[TEST_EXPAND_ROW] =
1314     g_signal_new (I_("test-expand-row"),
1315                   G_TYPE_FROM_CLASS (o_class),
1316                   G_SIGNAL_RUN_LAST,
1317                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1318                   _gtk_boolean_handled_accumulator, NULL,
1319                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1320                   G_TYPE_BOOLEAN, 2,
1321                   GTK_TYPE_TREE_ITER,
1322                   GTK_TYPE_TREE_PATH);
1323
1324   /**
1325    * GtkTreeView::test-collapse-row:
1326    * @tree_view: the object on which the signal is emitted
1327    * @iter: the tree iter of the row to collapse
1328    * @path: a tree path that points to the row
1329    *
1330    * The given row is about to be collapsed (hide its children nodes). Use this
1331    * signal if you need to control the collapsibility of individual rows.
1332    *
1333    * Returns: %FALSE to allow collapsing, %TRUE to reject
1334    */
1335   tree_view_signals[TEST_COLLAPSE_ROW] =
1336     g_signal_new (I_("test-collapse-row"),
1337                   G_TYPE_FROM_CLASS (o_class),
1338                   G_SIGNAL_RUN_LAST,
1339                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1340                   _gtk_boolean_handled_accumulator, NULL,
1341                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1342                   G_TYPE_BOOLEAN, 2,
1343                   GTK_TYPE_TREE_ITER,
1344                   GTK_TYPE_TREE_PATH);
1345
1346   /**
1347    * GtkTreeView::row-expanded:
1348    * @tree_view: the object on which the signal is emitted
1349    * @iter: the tree iter of the expanded row
1350    * @path: a tree path that points to the row
1351    *
1352    * The given row has been expanded (child nodes are shown).
1353    */
1354   tree_view_signals[ROW_EXPANDED] =
1355     g_signal_new (I_("row-expanded"),
1356                   G_TYPE_FROM_CLASS (o_class),
1357                   G_SIGNAL_RUN_LAST,
1358                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1359                   NULL, NULL,
1360                   _gtk_marshal_VOID__BOXED_BOXED,
1361                   G_TYPE_NONE, 2,
1362                   GTK_TYPE_TREE_ITER,
1363                   GTK_TYPE_TREE_PATH);
1364
1365   /**
1366    * GtkTreeView::row-collapsed:
1367    * @tree_view: the object on which the signal is emitted
1368    * @iter: the tree iter of the collapsed row
1369    * @path: a tree path that points to the row
1370    *
1371    * The given row has been collapsed (child nodes are hidden).
1372    */
1373   tree_view_signals[ROW_COLLAPSED] =
1374     g_signal_new (I_("row-collapsed"),
1375                   G_TYPE_FROM_CLASS (o_class),
1376                   G_SIGNAL_RUN_LAST,
1377                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1378                   NULL, NULL,
1379                   _gtk_marshal_VOID__BOXED_BOXED,
1380                   G_TYPE_NONE, 2,
1381                   GTK_TYPE_TREE_ITER,
1382                   GTK_TYPE_TREE_PATH);
1383
1384   /**
1385    * GtkTreeView::columns-changed:
1386    * @tree_view: the object on which the signal is emitted
1387    *
1388    * The number of columns of the treeview has changed.
1389    */
1390   tree_view_signals[COLUMNS_CHANGED] =
1391     g_signal_new (I_("columns-changed"),
1392                   G_TYPE_FROM_CLASS (o_class),
1393                   G_SIGNAL_RUN_LAST,
1394                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1395                   NULL, NULL,
1396                   _gtk_marshal_VOID__VOID,
1397                   G_TYPE_NONE, 0);
1398
1399   /**
1400    * GtkTreeView::cursor-changed:
1401    * @tree_view: the object on which the signal is emitted
1402    *
1403    * The position of the cursor (focused cell) has changed.
1404    */
1405   tree_view_signals[CURSOR_CHANGED] =
1406     g_signal_new (I_("cursor-changed"),
1407                   G_TYPE_FROM_CLASS (o_class),
1408                   G_SIGNAL_RUN_LAST,
1409                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1410                   NULL, NULL,
1411                   _gtk_marshal_VOID__VOID,
1412                   G_TYPE_NONE, 0);
1413
1414   tree_view_signals[MOVE_CURSOR] =
1415     g_signal_new (I_("move-cursor"),
1416                   G_TYPE_FROM_CLASS (o_class),
1417                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1418                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1419                   NULL, NULL,
1420                   _gtk_marshal_BOOLEAN__ENUM_INT,
1421                   G_TYPE_BOOLEAN, 2,
1422                   GTK_TYPE_MOVEMENT_STEP,
1423                   G_TYPE_INT);
1424
1425   tree_view_signals[SELECT_ALL] =
1426     g_signal_new (I_("select-all"),
1427                   G_TYPE_FROM_CLASS (o_class),
1428                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1429                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1430                   NULL, NULL,
1431                   _gtk_marshal_BOOLEAN__VOID,
1432                   G_TYPE_BOOLEAN, 0);
1433
1434   tree_view_signals[UNSELECT_ALL] =
1435     g_signal_new (I_("unselect-all"),
1436                   G_TYPE_FROM_CLASS (o_class),
1437                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1438                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1439                   NULL, NULL,
1440                   _gtk_marshal_BOOLEAN__VOID,
1441                   G_TYPE_BOOLEAN, 0);
1442
1443   tree_view_signals[SELECT_CURSOR_ROW] =
1444     g_signal_new (I_("select-cursor-row"),
1445                   G_TYPE_FROM_CLASS (o_class),
1446                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1447                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1448                   NULL, NULL,
1449                   _gtk_marshal_BOOLEAN__BOOLEAN,
1450                   G_TYPE_BOOLEAN, 1,
1451                   G_TYPE_BOOLEAN);
1452
1453   tree_view_signals[TOGGLE_CURSOR_ROW] =
1454     g_signal_new (I_("toggle-cursor-row"),
1455                   G_TYPE_FROM_CLASS (o_class),
1456                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1457                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1458                   NULL, NULL,
1459                   _gtk_marshal_BOOLEAN__VOID,
1460                   G_TYPE_BOOLEAN, 0);
1461
1462   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1463     g_signal_new (I_("expand-collapse-cursor-row"),
1464                   G_TYPE_FROM_CLASS (o_class),
1465                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1466                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1467                   NULL, NULL,
1468                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1469                   G_TYPE_BOOLEAN, 3,
1470                   G_TYPE_BOOLEAN,
1471                   G_TYPE_BOOLEAN,
1472                   G_TYPE_BOOLEAN);
1473
1474   tree_view_signals[SELECT_CURSOR_PARENT] =
1475     g_signal_new (I_("select-cursor-parent"),
1476                   G_TYPE_FROM_CLASS (o_class),
1477                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1478                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1479                   NULL, NULL,
1480                   _gtk_marshal_BOOLEAN__VOID,
1481                   G_TYPE_BOOLEAN, 0);
1482
1483   tree_view_signals[START_INTERACTIVE_SEARCH] =
1484     g_signal_new (I_("start-interactive-search"),
1485                   G_TYPE_FROM_CLASS (o_class),
1486                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1487                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1488                   NULL, NULL,
1489                   _gtk_marshal_BOOLEAN__VOID,
1490                   G_TYPE_BOOLEAN, 0);
1491
1492   /* Key bindings */
1493   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1494                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1495   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1496                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1497
1498   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1499                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1500   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1501                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1502
1503   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1504                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1505
1506   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1507                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1508
1509   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1510                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1511   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1512                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1513
1514   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1515                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1516   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1517                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1518
1519   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1520                                   GTK_MOVEMENT_PAGES, -1);
1521   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1522                                   GTK_MOVEMENT_PAGES, -1);
1523
1524   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1525                                   GTK_MOVEMENT_PAGES, 1);
1526   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1527                                   GTK_MOVEMENT_PAGES, 1);
1528
1529
1530   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1531                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1532                                 G_TYPE_INT, 1);
1533
1534   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1535                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1536                                 G_TYPE_INT, -1);
1537
1538   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1539                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1540                                 G_TYPE_INT, 1);
1541
1542   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1543                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1544                                 G_TYPE_INT, -1);
1545
1546   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1547                                 "move-cursor", 2,
1548                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1549                                 G_TYPE_INT, 1);
1550
1551   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1552                                 "move-cursor", 2,
1553                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1554                                 G_TYPE_INT, -1);
1555
1556   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1557                                 "move-cursor", 2,
1558                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1559                                 G_TYPE_INT, 1);
1560
1561   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1562                                 "move-cursor", 2,
1563                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1564                                 G_TYPE_INT, -1);
1565
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1567   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1568
1569   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1570   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1571
1572   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1573   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1574
1575   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1576                                 G_TYPE_BOOLEAN, TRUE);
1577   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1578                                 G_TYPE_BOOLEAN, TRUE);
1579
1580   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1581                                 G_TYPE_BOOLEAN, TRUE);
1582   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1583                                 G_TYPE_BOOLEAN, TRUE);
1584   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1585                                 G_TYPE_BOOLEAN, TRUE);
1586   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1587                                 G_TYPE_BOOLEAN, TRUE);
1588   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1589                                 G_TYPE_BOOLEAN, TRUE);
1590
1591   /* expand and collapse rows */
1592   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, TRUE,
1595                                 G_TYPE_BOOLEAN, FALSE);
1596
1597   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1598                                 "expand-collapse-cursor-row", 3,
1599                                 G_TYPE_BOOLEAN, TRUE,
1600                                 G_TYPE_BOOLEAN, TRUE,
1601                                 G_TYPE_BOOLEAN, TRUE);
1602   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1603                                 "expand-collapse-cursor-row", 3,
1604                                 G_TYPE_BOOLEAN, TRUE,
1605                                 G_TYPE_BOOLEAN, TRUE,
1606                                 G_TYPE_BOOLEAN, TRUE);
1607
1608   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1609                                 "expand-collapse-cursor-row", 3,
1610                                 G_TYPE_BOOLEAN, TRUE,
1611                                 G_TYPE_BOOLEAN, FALSE,
1612                                 G_TYPE_BOOLEAN, FALSE);
1613   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1614                                 "expand-collapse-cursor-row", 3,
1615                                 G_TYPE_BOOLEAN, TRUE,
1616                                 G_TYPE_BOOLEAN, FALSE,
1617                                 G_TYPE_BOOLEAN, FALSE);
1618
1619   /* Not doable on US keyboards */
1620   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1621                                 G_TYPE_BOOLEAN, TRUE,
1622                                 G_TYPE_BOOLEAN, TRUE,
1623                                 G_TYPE_BOOLEAN, TRUE);
1624   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1625                                 G_TYPE_BOOLEAN, TRUE,
1626                                 G_TYPE_BOOLEAN, TRUE,
1627                                 G_TYPE_BOOLEAN, FALSE);
1628   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1629                                 G_TYPE_BOOLEAN, TRUE,
1630                                 G_TYPE_BOOLEAN, TRUE,
1631                                 G_TYPE_BOOLEAN, TRUE);
1632   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1633                                 G_TYPE_BOOLEAN, TRUE,
1634                                 G_TYPE_BOOLEAN, TRUE,
1635                                 G_TYPE_BOOLEAN, TRUE);
1636   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1637                                 "expand-collapse-cursor-row", 3,
1638                                 G_TYPE_BOOLEAN, FALSE,
1639                                 G_TYPE_BOOLEAN, TRUE,
1640                                 G_TYPE_BOOLEAN, TRUE);
1641   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1642                                 "expand-collapse-cursor-row", 3,
1643                                 G_TYPE_BOOLEAN, FALSE,
1644                                 G_TYPE_BOOLEAN, TRUE,
1645                                 G_TYPE_BOOLEAN, TRUE);
1646   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1647                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1648                                 "expand-collapse-cursor-row", 3,
1649                                 G_TYPE_BOOLEAN, FALSE,
1650                                 G_TYPE_BOOLEAN, TRUE,
1651                                 G_TYPE_BOOLEAN, TRUE);
1652   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1653                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1654                                 "expand-collapse-cursor-row", 3,
1655                                 G_TYPE_BOOLEAN, FALSE,
1656                                 G_TYPE_BOOLEAN, TRUE,
1657                                 G_TYPE_BOOLEAN, TRUE);
1658
1659   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1660                                 G_TYPE_BOOLEAN, TRUE,
1661                                 G_TYPE_BOOLEAN, FALSE,
1662                                 G_TYPE_BOOLEAN, FALSE);
1663   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1664                                 G_TYPE_BOOLEAN, TRUE,
1665                                 G_TYPE_BOOLEAN, FALSE,
1666                                 G_TYPE_BOOLEAN, TRUE);
1667   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1668                                 G_TYPE_BOOLEAN, TRUE,
1669                                 G_TYPE_BOOLEAN, FALSE,
1670                                 G_TYPE_BOOLEAN, FALSE);
1671   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1672                                 G_TYPE_BOOLEAN, TRUE,
1673                                 G_TYPE_BOOLEAN, FALSE,
1674                                 G_TYPE_BOOLEAN, TRUE);
1675   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1676                                 "expand-collapse-cursor-row", 3,
1677                                 G_TYPE_BOOLEAN, FALSE,
1678                                 G_TYPE_BOOLEAN, FALSE,
1679                                 G_TYPE_BOOLEAN, TRUE);
1680   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1681                                 "expand-collapse-cursor-row", 3,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, FALSE,
1684                                 G_TYPE_BOOLEAN, TRUE);
1685   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1686                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1687                                 "expand-collapse-cursor-row", 3,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, FALSE,
1690                                 G_TYPE_BOOLEAN, TRUE);
1691   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1692                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1693                                 "expand-collapse-cursor-row", 3,
1694                                 G_TYPE_BOOLEAN, FALSE,
1695                                 G_TYPE_BOOLEAN, FALSE,
1696                                 G_TYPE_BOOLEAN, TRUE);
1697
1698   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1699   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1700
1701   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1702
1703   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1704
1705   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1706
1707   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1708 }
1709
1710 static void
1711 gtk_tree_view_init (GtkTreeView *tree_view)
1712 {
1713   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1714
1715   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1716   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1717
1718   tree_view->priv->show_expanders = TRUE;
1719   tree_view->priv->draw_keyfocus = TRUE;
1720   tree_view->priv->headers_visible = TRUE;
1721
1722   /* We need some padding */
1723   tree_view->priv->dy = 0;
1724   tree_view->priv->cursor_offset = 0;
1725   tree_view->priv->n_columns = 0;
1726   tree_view->priv->header_height = 1;
1727   tree_view->priv->x_drag = 0;
1728   tree_view->priv->drag_pos = -1;
1729   tree_view->priv->header_has_focus = FALSE;
1730   tree_view->priv->pressed_button = -1;
1731   tree_view->priv->press_start_x = -1;
1732   tree_view->priv->press_start_y = -1;
1733   tree_view->priv->reorderable = FALSE;
1734   tree_view->priv->presize_handler_timer = 0;
1735   tree_view->priv->scroll_sync_timer = 0;
1736   tree_view->priv->fixed_height = -1;
1737   tree_view->priv->fixed_height_mode = FALSE;
1738   tree_view->priv->fixed_height_check = 0;
1739   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1740   tree_view->priv->enable_search = TRUE;
1741   tree_view->priv->search_column = -1;
1742   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1743   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1744   tree_view->priv->search_custom_entry_set = FALSE;
1745   tree_view->priv->typeselect_flush_timeout = 0;
1746   tree_view->priv->init_hadjust_value = TRUE;
1747   tree_view->priv->width = 0;
1748
1749   tree_view->priv->hover_selection = FALSE;
1750   tree_view->priv->hover_expand = FALSE;
1751
1752   tree_view->priv->level_indentation = 0;
1753
1754   tree_view->priv->rubber_banding_enable = FALSE;
1755
1756   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1757   tree_view->priv->tree_lines_enabled = FALSE;
1758
1759   tree_view->priv->tooltip_column = -1;
1760
1761   tree_view->priv->post_validation_flag = FALSE;
1762
1763   tree_view->priv->last_button_x = -1;
1764   tree_view->priv->last_button_y = -1;
1765
1766   tree_view->priv->event_last_x = -10000;
1767   tree_view->priv->event_last_y = -10000;
1768
1769   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1770   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1771 }
1772
1773 \f
1774
1775 /* GObject Methods
1776  */
1777
1778 static void
1779 gtk_tree_view_set_property (GObject         *object,
1780                             guint            prop_id,
1781                             const GValue    *value,
1782                             GParamSpec      *pspec)
1783 {
1784   GtkTreeView *tree_view;
1785
1786   tree_view = GTK_TREE_VIEW (object);
1787
1788   switch (prop_id)
1789     {
1790     case PROP_MODEL:
1791       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1792       break;
1793     case PROP_HADJUSTMENT:
1794       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1795       break;
1796     case PROP_VADJUSTMENT:
1797       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1798       break;
1799     case PROP_HSCROLL_POLICY:
1800       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1801       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1802       break;
1803     case PROP_VSCROLL_POLICY:
1804       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1805       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1806       break;
1807     case PROP_HEADERS_VISIBLE:
1808       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1809       break;
1810     case PROP_HEADERS_CLICKABLE:
1811       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1812       break;
1813     case PROP_EXPANDER_COLUMN:
1814       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1815       break;
1816     case PROP_REORDERABLE:
1817       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1818       break;
1819     case PROP_RULES_HINT:
1820       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1821       break;
1822     case PROP_ENABLE_SEARCH:
1823       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1824       break;
1825     case PROP_SEARCH_COLUMN:
1826       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1827       break;
1828     case PROP_FIXED_HEIGHT_MODE:
1829       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1830       break;
1831     case PROP_HOVER_SELECTION:
1832       tree_view->priv->hover_selection = g_value_get_boolean (value);
1833       break;
1834     case PROP_HOVER_EXPAND:
1835       tree_view->priv->hover_expand = g_value_get_boolean (value);
1836       break;
1837     case PROP_SHOW_EXPANDERS:
1838       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1839       break;
1840     case PROP_LEVEL_INDENTATION:
1841       tree_view->priv->level_indentation = g_value_get_int (value);
1842       break;
1843     case PROP_RUBBER_BANDING:
1844       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1845       break;
1846     case PROP_ENABLE_GRID_LINES:
1847       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1848       break;
1849     case PROP_ENABLE_TREE_LINES:
1850       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1851       break;
1852     case PROP_TOOLTIP_COLUMN:
1853       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1854       break;
1855     default:
1856       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1857       break;
1858     }
1859 }
1860
1861 static void
1862 gtk_tree_view_get_property (GObject    *object,
1863                             guint       prop_id,
1864                             GValue     *value,
1865                             GParamSpec *pspec)
1866 {
1867   GtkTreeView *tree_view;
1868
1869   tree_view = GTK_TREE_VIEW (object);
1870
1871   switch (prop_id)
1872     {
1873     case PROP_MODEL:
1874       g_value_set_object (value, tree_view->priv->model);
1875       break;
1876     case PROP_HADJUSTMENT:
1877       g_value_set_object (value, tree_view->priv->hadjustment);
1878       break;
1879     case PROP_VADJUSTMENT:
1880       g_value_set_object (value, tree_view->priv->vadjustment);
1881       break;
1882     case PROP_HSCROLL_POLICY:
1883       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1884       break;
1885     case PROP_VSCROLL_POLICY:
1886       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1887       break;
1888     case PROP_HEADERS_VISIBLE:
1889       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1890       break;
1891     case PROP_HEADERS_CLICKABLE:
1892       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1893       break;
1894     case PROP_EXPANDER_COLUMN:
1895       g_value_set_object (value, tree_view->priv->expander_column);
1896       break;
1897     case PROP_REORDERABLE:
1898       g_value_set_boolean (value, tree_view->priv->reorderable);
1899       break;
1900     case PROP_RULES_HINT:
1901       g_value_set_boolean (value, tree_view->priv->has_rules);
1902       break;
1903     case PROP_ENABLE_SEARCH:
1904       g_value_set_boolean (value, tree_view->priv->enable_search);
1905       break;
1906     case PROP_SEARCH_COLUMN:
1907       g_value_set_int (value, tree_view->priv->search_column);
1908       break;
1909     case PROP_FIXED_HEIGHT_MODE:
1910       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1911       break;
1912     case PROP_HOVER_SELECTION:
1913       g_value_set_boolean (value, tree_view->priv->hover_selection);
1914       break;
1915     case PROP_HOVER_EXPAND:
1916       g_value_set_boolean (value, tree_view->priv->hover_expand);
1917       break;
1918     case PROP_SHOW_EXPANDERS:
1919       g_value_set_boolean (value, tree_view->priv->show_expanders);
1920       break;
1921     case PROP_LEVEL_INDENTATION:
1922       g_value_set_int (value, tree_view->priv->level_indentation);
1923       break;
1924     case PROP_RUBBER_BANDING:
1925       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1926       break;
1927     case PROP_ENABLE_GRID_LINES:
1928       g_value_set_enum (value, tree_view->priv->grid_lines);
1929       break;
1930     case PROP_ENABLE_TREE_LINES:
1931       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1932       break;
1933     case PROP_TOOLTIP_COLUMN:
1934       g_value_set_int (value, tree_view->priv->tooltip_column);
1935       break;
1936     default:
1937       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1938       break;
1939     }
1940 }
1941
1942 static void
1943 gtk_tree_view_finalize (GObject *object)
1944 {
1945   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1946 }
1947
1948
1949 static GtkBuildableIface *parent_buildable_iface;
1950
1951 static void
1952 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1953 {
1954   parent_buildable_iface = g_type_interface_peek_parent (iface);
1955   iface->add_child = gtk_tree_view_buildable_add_child;
1956   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1957 }
1958
1959 static void
1960 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1961                                    GtkBuilder  *builder,
1962                                    GObject     *child,
1963                                    const gchar *type)
1964 {
1965   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1966 }
1967
1968 static GObject *
1969 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1970                                             GtkBuilder        *builder,
1971                                             const gchar       *childname)
1972 {
1973     if (strcmp (childname, "selection") == 0)
1974       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1975
1976     return parent_buildable_iface->get_internal_child (buildable,
1977                                                        builder,
1978                                                        childname);
1979 }
1980
1981 /* GtkWidget Methods
1982  */
1983
1984 static void
1985 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1986 {
1987   _gtk_rbtree_free (tree_view->priv->tree);
1988
1989   tree_view->priv->tree = NULL;
1990   tree_view->priv->button_pressed_node = NULL;
1991   tree_view->priv->button_pressed_tree = NULL;
1992   tree_view->priv->prelight_tree = NULL;
1993   tree_view->priv->prelight_node = NULL;
1994   tree_view->priv->expanded_collapsed_node = NULL;
1995   tree_view->priv->expanded_collapsed_tree = NULL;
1996 }
1997
1998 static void
1999 gtk_tree_view_destroy (GtkWidget *widget)
2000 {
2001   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2002   GList *list;
2003
2004   gtk_tree_view_stop_editing (tree_view, TRUE);
2005
2006   if (tree_view->priv->columns != NULL)
2007     {
2008       list = tree_view->priv->columns;
2009       while (list)
2010         {
2011           GtkTreeViewColumn *column;
2012           column = GTK_TREE_VIEW_COLUMN (list->data);
2013           list = list->next;
2014           gtk_tree_view_remove_column (tree_view, column);
2015         }
2016       tree_view->priv->columns = NULL;
2017     }
2018
2019   if (tree_view->priv->tree != NULL)
2020     {
2021       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2022
2023       gtk_tree_view_free_rbtree (tree_view);
2024     }
2025
2026   if (tree_view->priv->selection != NULL)
2027     {
2028       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2029       g_object_unref (tree_view->priv->selection);
2030       tree_view->priv->selection = NULL;
2031     }
2032
2033   if (tree_view->priv->scroll_to_path != NULL)
2034     {
2035       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2036       tree_view->priv->scroll_to_path = NULL;
2037     }
2038
2039   if (tree_view->priv->drag_dest_row != NULL)
2040     {
2041       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2042       tree_view->priv->drag_dest_row = NULL;
2043     }
2044
2045   if (tree_view->priv->top_row != NULL)
2046     {
2047       gtk_tree_row_reference_free (tree_view->priv->top_row);
2048       tree_view->priv->top_row = NULL;
2049     }
2050
2051   if (tree_view->priv->column_drop_func_data &&
2052       tree_view->priv->column_drop_func_data_destroy)
2053     {
2054       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2055       tree_view->priv->column_drop_func_data = NULL;
2056     }
2057
2058   if (tree_view->priv->destroy_count_destroy &&
2059       tree_view->priv->destroy_count_data)
2060     {
2061       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2062       tree_view->priv->destroy_count_data = NULL;
2063     }
2064
2065   gtk_tree_row_reference_free (tree_view->priv->anchor);
2066   tree_view->priv->anchor = NULL;
2067
2068   /* destroy interactive search dialog */
2069   if (tree_view->priv->search_window)
2070     {
2071       gtk_widget_destroy (tree_view->priv->search_window);
2072       tree_view->priv->search_window = NULL;
2073       tree_view->priv->search_entry = NULL;
2074       if (tree_view->priv->typeselect_flush_timeout)
2075         {
2076           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2077           tree_view->priv->typeselect_flush_timeout = 0;
2078         }
2079     }
2080
2081   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2082     {
2083       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2084       tree_view->priv->search_user_data = NULL;
2085     }
2086
2087   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2088     {
2089       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2090       tree_view->priv->search_position_user_data = NULL;
2091     }
2092
2093   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2094     {
2095       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2096       tree_view->priv->row_separator_data = NULL;
2097     }
2098
2099   gtk_tree_view_set_model (tree_view, NULL);
2100
2101   if (tree_view->priv->hadjustment)
2102     {
2103       g_object_unref (tree_view->priv->hadjustment);
2104       tree_view->priv->hadjustment = NULL;
2105     }
2106   if (tree_view->priv->vadjustment)
2107     {
2108       g_object_unref (tree_view->priv->vadjustment);
2109       tree_view->priv->vadjustment = NULL;
2110     }
2111
2112   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2113 }
2114
2115 /* GtkWidget::map helper */
2116 static void
2117 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2118 {
2119   GList *list;
2120
2121   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2122
2123   if (tree_view->priv->headers_visible)
2124     {
2125       GtkTreeViewColumn *column;
2126       GtkWidget         *button;
2127       GdkWindow         *window;
2128
2129       for (list = tree_view->priv->columns; list; list = list->next)
2130         {
2131           column = list->data;
2132           button = gtk_tree_view_column_get_button (column);
2133
2134           if (gtk_tree_view_column_get_visible (column) && button)
2135             gtk_widget_show_now (button);
2136
2137           if (gtk_widget_get_visible (button) &&
2138               !gtk_widget_get_mapped (button))
2139             gtk_widget_map (button);
2140         }
2141       for (list = tree_view->priv->columns; list; list = list->next)
2142         {
2143           column = list->data;
2144           if (gtk_tree_view_column_get_visible (column) == FALSE)
2145             continue;
2146
2147           window = _gtk_tree_view_column_get_window (column);
2148           if (gtk_tree_view_column_get_resizable (column))
2149             {
2150               gdk_window_raise (window);
2151               gdk_window_show (window);
2152             }
2153           else
2154             gdk_window_hide (window);
2155         }
2156       gdk_window_show (tree_view->priv->header_window);
2157     }
2158 }
2159
2160 static void
2161 gtk_tree_view_map (GtkWidget *widget)
2162 {
2163   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2164   GList *tmp_list;
2165
2166   gtk_widget_set_mapped (widget, TRUE);
2167
2168   tmp_list = tree_view->priv->children;
2169   while (tmp_list)
2170     {
2171       GtkTreeViewChild *child = tmp_list->data;
2172       tmp_list = tmp_list->next;
2173
2174       if (gtk_widget_get_visible (child->widget))
2175         {
2176           if (!gtk_widget_get_mapped (child->widget))
2177             gtk_widget_map (child->widget);
2178         }
2179     }
2180   gdk_window_show (tree_view->priv->bin_window);
2181
2182   gtk_tree_view_map_buttons (tree_view);
2183
2184   gdk_window_show (gtk_widget_get_window (widget));
2185 }
2186
2187 static void
2188 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2189 {
2190   GtkStyleContext *context;
2191
2192   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2193
2194   gtk_style_context_save (context);
2195   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2196   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2197   gtk_style_context_set_background (context, gtk_widget_get_window (GTK_WIDGET (tree_view)));
2198   gtk_style_context_restore (context);
2199
2200   gtk_style_context_set_background (context, tree_view->priv->header_window);
2201 }
2202
2203 static void
2204 gtk_tree_view_realize (GtkWidget *widget)
2205 {
2206   GtkAllocation allocation;
2207   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2208   GdkWindow *window;
2209   GdkWindowAttr attributes;
2210   GList *tmp_list;
2211   gint attributes_mask;
2212
2213   gtk_widget_set_realized (widget, TRUE);
2214
2215   gtk_widget_get_allocation (widget, &allocation);
2216
2217   /* Make the main, clipping window */
2218   attributes.window_type = GDK_WINDOW_CHILD;
2219   attributes.x = allocation.x;
2220   attributes.y = allocation.y;
2221   attributes.width = allocation.width;
2222   attributes.height = allocation.height;
2223   attributes.wclass = GDK_INPUT_OUTPUT;
2224   attributes.visual = gtk_widget_get_visual (widget);
2225   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2226
2227   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2228
2229   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2230                            &attributes, attributes_mask);
2231   gtk_widget_set_window (widget, window);
2232   gdk_window_set_user_data (window, widget);
2233
2234   gtk_widget_get_allocation (widget, &allocation);
2235
2236   /* Make the window for the tree */
2237   attributes.x = 0;
2238   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2239   attributes.width = MAX (tree_view->priv->width, allocation.width);
2240   attributes.height = allocation.height;
2241   attributes.event_mask = (GDK_EXPOSURE_MASK |
2242                            GDK_SCROLL_MASK |
2243                            GDK_SMOOTH_SCROLL_MASK |
2244                            GDK_POINTER_MOTION_MASK |
2245                            GDK_ENTER_NOTIFY_MASK |
2246                            GDK_LEAVE_NOTIFY_MASK |
2247                            GDK_BUTTON_PRESS_MASK |
2248                            GDK_BUTTON_RELEASE_MASK |
2249                            gtk_widget_get_events (widget));
2250
2251   tree_view->priv->bin_window = gdk_window_new (window,
2252                                                 &attributes, attributes_mask);
2253   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2254
2255   gtk_widget_get_allocation (widget, &allocation);
2256
2257   /* Make the column header window */
2258   attributes.x = 0;
2259   attributes.y = 0;
2260   attributes.width = MAX (tree_view->priv->width, allocation.width);
2261   attributes.height = tree_view->priv->header_height;
2262   attributes.event_mask = (GDK_EXPOSURE_MASK |
2263                            GDK_SCROLL_MASK |
2264                            GDK_ENTER_NOTIFY_MASK |
2265                            GDK_LEAVE_NOTIFY_MASK |
2266                            GDK_BUTTON_PRESS_MASK |
2267                            GDK_BUTTON_RELEASE_MASK |
2268                            GDK_KEY_PRESS_MASK |
2269                            GDK_KEY_RELEASE_MASK |
2270                            gtk_widget_get_events (widget));
2271
2272   tree_view->priv->header_window = gdk_window_new (window,
2273                                                    &attributes, attributes_mask);
2274   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2275
2276   gtk_tree_view_ensure_background (tree_view);
2277
2278   tmp_list = tree_view->priv->children;
2279   while (tmp_list)
2280     {
2281       GtkTreeViewChild *child = tmp_list->data;
2282       tmp_list = tmp_list->next;
2283
2284       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2285     }
2286
2287   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2288     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2289
2290   /* Need to call those here, since they create GCs */
2291   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2292   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2293
2294   install_presize_handler (tree_view);
2295 }
2296
2297 static void
2298 gtk_tree_view_unrealize (GtkWidget *widget)
2299 {
2300   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2301   GtkTreeViewPrivate *priv = tree_view->priv;
2302   GtkStyleContext *context;
2303   GList *list;
2304
2305   if (priv->scroll_timeout != 0)
2306     {
2307       g_source_remove (priv->scroll_timeout);
2308       priv->scroll_timeout = 0;
2309     }
2310
2311   if (priv->auto_expand_timeout != 0)
2312     {
2313       g_source_remove (priv->auto_expand_timeout);
2314       priv->auto_expand_timeout = 0;
2315     }
2316
2317   if (priv->open_dest_timeout != 0)
2318     {
2319       g_source_remove (priv->open_dest_timeout);
2320       priv->open_dest_timeout = 0;
2321     }
2322
2323   context = gtk_widget_get_style_context (widget);
2324   gtk_style_context_cancel_animations (context, NULL);
2325
2326   if (priv->presize_handler_timer != 0)
2327     {
2328       g_source_remove (priv->presize_handler_timer);
2329       priv->presize_handler_timer = 0;
2330     }
2331
2332   if (priv->validate_rows_timer != 0)
2333     {
2334       g_source_remove (priv->validate_rows_timer);
2335       priv->validate_rows_timer = 0;
2336     }
2337
2338   if (priv->scroll_sync_timer != 0)
2339     {
2340       g_source_remove (priv->scroll_sync_timer);
2341       priv->scroll_sync_timer = 0;
2342     }
2343
2344   if (priv->typeselect_flush_timeout)
2345     {
2346       g_source_remove (priv->typeselect_flush_timeout);
2347       priv->typeselect_flush_timeout = 0;
2348     }
2349
2350   for (list = priv->columns; list; list = list->next)
2351     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2352
2353   gdk_window_set_user_data (priv->bin_window, NULL);
2354   gdk_window_destroy (priv->bin_window);
2355   priv->bin_window = NULL;
2356
2357   gdk_window_set_user_data (priv->header_window, NULL);
2358   gdk_window_destroy (priv->header_window);
2359   priv->header_window = NULL;
2360
2361   if (priv->drag_window)
2362     {
2363       gdk_window_set_user_data (priv->drag_window, NULL);
2364       gdk_window_destroy (priv->drag_window);
2365       priv->drag_window = NULL;
2366     }
2367
2368   if (priv->drag_highlight_window)
2369     {
2370       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2371       gdk_window_destroy (priv->drag_highlight_window);
2372       priv->drag_highlight_window = NULL;
2373     }
2374
2375   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2376 }
2377
2378 /* GtkWidget::size_request helper */
2379 static void
2380 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2381 {
2382   GList *list;
2383
2384   tree_view->priv->header_height = 0;
2385
2386   for (list = tree_view->priv->columns; list; list = list->next)
2387     {
2388       GtkRequisition     requisition;
2389       GtkTreeViewColumn *column = list->data;
2390       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2391
2392       if (button == NULL)
2393         continue;
2394
2395       gtk_widget_get_preferred_size (button, &requisition, NULL);
2396       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2397     }
2398 }
2399
2400
2401 /* Called only by ::size_request */
2402 static void
2403 gtk_tree_view_update_size (GtkTreeView *tree_view)
2404 {
2405   GList *list;
2406   GtkTreeViewColumn *column;
2407   gint i;
2408
2409   if (tree_view->priv->model == NULL)
2410     {
2411       tree_view->priv->width = 0;
2412       tree_view->priv->prev_width = 0;
2413       tree_view->priv->height = 0;
2414       return;
2415     }
2416
2417   tree_view->priv->prev_width = tree_view->priv->width;
2418   tree_view->priv->width = 0;
2419
2420   /* keep this in sync with size_allocate below */
2421   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2422     {
2423       column = list->data;
2424       if (!gtk_tree_view_column_get_visible (column))
2425         continue;
2426
2427       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2428     }
2429
2430   if (tree_view->priv->tree == NULL)
2431     tree_view->priv->height = 0;
2432   else
2433     tree_view->priv->height = tree_view->priv->tree->root->offset;
2434 }
2435
2436 static void
2437 gtk_tree_view_size_request (GtkWidget      *widget,
2438                             GtkRequisition *requisition,
2439                             gboolean        may_validate)
2440 {
2441   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2442
2443   if (may_validate)
2444     {
2445       /* we validate some rows initially just to make sure we have some size.
2446        * In practice, with a lot of static lists, this should get a good width.
2447        */
2448       do_validate_rows (tree_view, FALSE);
2449     }
2450
2451   gtk_tree_view_size_request_columns (tree_view);
2452   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2453
2454   requisition->width = tree_view->priv->width;
2455   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2456 }
2457
2458 static void
2459 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2460                                    gint      *minimum,
2461                                    gint      *natural)
2462 {
2463   GtkRequisition requisition;
2464
2465   gtk_tree_view_size_request (widget, &requisition, TRUE);
2466
2467   *minimum = *natural = requisition.width;
2468 }
2469
2470 static void
2471 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2472                                     gint      *minimum,
2473                                     gint      *natural)
2474 {
2475   GtkRequisition requisition;
2476
2477   gtk_tree_view_size_request (widget, &requisition, TRUE);
2478
2479   *minimum = *natural = requisition.height;
2480 }
2481
2482 static int
2483 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2484 {
2485   int width = 0;
2486   GList *list;
2487   gboolean rtl;
2488
2489   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2490   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2491        list->data != tree_view->priv->expander_column;
2492        list = (rtl ? list->prev : list->next))
2493     {
2494       GtkTreeViewColumn *column = list->data;
2495
2496       width += gtk_tree_view_column_get_width (column);
2497     }
2498
2499   return width;
2500 }
2501
2502 /* GtkWidget::size_allocate helper */
2503 static void
2504 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2505                                      gboolean  *width_changed)
2506 {
2507   GtkTreeView *tree_view;
2508   GList *list, *first_column, *last_column;
2509   GtkTreeViewColumn *column;
2510   GtkAllocation widget_allocation;
2511   gint width = 0;
2512   gint extra, extra_per_column, extra_for_last;
2513   gint full_requested_width = 0;
2514   gint number_of_expand_columns = 0;
2515   gboolean rtl;
2516   gboolean update_expand;
2517
2518   tree_view = GTK_TREE_VIEW (widget);
2519
2520   for (last_column = g_list_last (tree_view->priv->columns);
2521        last_column &&
2522        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2523        last_column = last_column->prev)
2524     ;
2525   if (last_column == NULL)
2526     return;
2527
2528   for (first_column = g_list_first (tree_view->priv->columns);
2529        first_column &&
2530        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2531        first_column = first_column->next)
2532     ;
2533
2534   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2535
2536   /* find out how many extra space and expandable columns we have */
2537   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2538     {
2539       column = (GtkTreeViewColumn *)list->data;
2540
2541       if (!gtk_tree_view_column_get_visible (column))
2542         continue;
2543
2544       full_requested_width += _gtk_tree_view_column_request_width (column);
2545
2546       if (gtk_tree_view_column_get_expand (column))
2547         number_of_expand_columns++;
2548     }
2549
2550   /* Only update the expand value if the width of the widget has changed,
2551    * or the number of expand columns has changed, or if there are no expand
2552    * columns, or if we didn't have an size-allocation yet after the
2553    * last validated node.
2554    */
2555   update_expand = (width_changed && *width_changed == TRUE)
2556       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2557       || number_of_expand_columns == 0
2558       || tree_view->priv->post_validation_flag == TRUE;
2559
2560   tree_view->priv->post_validation_flag = FALSE;
2561
2562   gtk_widget_get_allocation (widget, &widget_allocation);
2563   if (!update_expand)
2564     {
2565       extra = tree_view->priv->last_extra_space;
2566       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2567     }
2568   else
2569     {
2570       extra = MAX (widget_allocation.width - full_requested_width, 0);
2571       extra_for_last = 0;
2572
2573       tree_view->priv->last_extra_space = extra;
2574     }
2575
2576   if (number_of_expand_columns > 0)
2577     extra_per_column = extra/number_of_expand_columns;
2578   else
2579     extra_per_column = 0;
2580
2581   if (update_expand)
2582     {
2583       tree_view->priv->last_extra_space_per_column = extra_per_column;
2584       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2585     }
2586
2587   for (list = (rtl ? last_column : first_column);
2588        list != (rtl ? first_column->prev : last_column->next);
2589        list = (rtl ? list->prev : list->next))
2590     {
2591       gint column_width;
2592
2593       column = list->data;
2594
2595       if (!gtk_tree_view_column_get_visible (column))
2596         continue;
2597
2598       /* We need to handle the dragged button specially.
2599        */
2600       if (column == tree_view->priv->drag_column)
2601         {
2602           GtkAllocation drag_allocation;
2603           GtkWidget    *button;
2604
2605           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2606
2607           drag_allocation.x = 0;
2608           drag_allocation.y = 0;
2609           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2610           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2611           gtk_widget_size_allocate (button, &drag_allocation);
2612           width += drag_allocation.width;
2613           continue;
2614         }
2615
2616       column_width = _gtk_tree_view_column_request_width (column);
2617
2618       if (gtk_tree_view_column_get_expand (column))
2619         {
2620           if (number_of_expand_columns == 1)
2621             {
2622               /* We add the remander to the last column as
2623                * */
2624               column_width += extra;
2625             }
2626           else
2627             {
2628               column_width += extra_per_column;
2629               extra -= extra_per_column;
2630               number_of_expand_columns --;
2631             }
2632         }
2633       else if (number_of_expand_columns == 0 &&
2634                list == last_column)
2635         {
2636           column_width += extra;
2637         }
2638
2639       /* In addition to expand, the last column can get even more
2640        * extra space so all available space is filled up.
2641        */
2642       if (extra_for_last > 0 && list == last_column)
2643         column_width += extra_for_last;
2644
2645       _gtk_tree_view_column_allocate (column, width, column_width);
2646
2647       width += column_width;
2648     }
2649
2650   /* We change the width here.  The user might have been resizing columns,
2651    * which changes the total width of the tree view.  This is of
2652    * importance for getting the horizontal scroll bar right.
2653    */
2654   if (tree_view->priv->width != width)
2655     {
2656       tree_view->priv->width = width;
2657       if (width_changed)
2658         *width_changed = TRUE;
2659     }
2660 }
2661
2662
2663 static void
2664 gtk_tree_view_size_allocate (GtkWidget     *widget,
2665                              GtkAllocation *allocation)
2666 {
2667   GtkAllocation widget_allocation;
2668   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2669   GList *tmp_list;
2670   gboolean width_changed = FALSE;
2671   gint old_width;
2672
2673   gtk_widget_get_allocation (widget, &widget_allocation);
2674   old_width = widget_allocation.width;
2675   if (allocation->width != widget_allocation.width)
2676     width_changed = TRUE;
2677
2678   gtk_widget_set_allocation (widget, allocation);
2679
2680   tmp_list = tree_view->priv->children;
2681
2682   while (tmp_list)
2683     {
2684       GtkAllocation allocation;
2685
2686       GtkTreeViewChild *child = tmp_list->data;
2687       tmp_list = tmp_list->next;
2688
2689       /* totally ignore our child's requisition */
2690       allocation.x = child->x;
2691       allocation.y = child->y;
2692       allocation.width = child->width;
2693       allocation.height = child->height;
2694       gtk_widget_size_allocate (child->widget, &allocation);
2695     }
2696
2697   /* We size-allocate the columns first because the width of the
2698    * tree view (used in updating the adjustments below) might change.
2699    */
2700   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2701
2702   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2703   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2704                                 allocation->width);
2705   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2706                                      allocation->width * 0.9);
2707   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2708                                      allocation->width * 0.1);
2709   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2710   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2711                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2712                                  tree_view->priv->width));
2713   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2714
2715   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2716     {
2717       if (allocation->width < tree_view->priv->width)
2718         {
2719           if (tree_view->priv->init_hadjust_value)
2720             {
2721               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2722                                         MAX (tree_view->priv->width -
2723                                              allocation->width, 0));
2724               tree_view->priv->init_hadjust_value = FALSE;
2725             }
2726           else if (allocation->width != old_width)
2727             {
2728               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2729                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2730                                                0,
2731                                                tree_view->priv->width - allocation->width));
2732             }
2733           else
2734             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2735                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2736                                              0,
2737                                              tree_view->priv->width - allocation->width));
2738         }
2739       else
2740         {
2741           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2742           tree_view->priv->init_hadjust_value = TRUE;
2743         }
2744     }
2745   else
2746     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2747       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2748                                 MAX (tree_view->priv->width -
2749                                      allocation->width, 0));
2750
2751   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2752   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2753                                 allocation->height -
2754                                 gtk_tree_view_get_effective_header_height (tree_view));
2755   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2756                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2757   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2758                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2759   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2760   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2761                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2762                                  tree_view->priv->height));
2763   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2764
2765   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2766   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2767     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2768   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2769     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2770                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2771   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2772     gtk_tree_view_top_row_to_dy (tree_view);
2773   else
2774     gtk_tree_view_dy_to_top_row (tree_view);
2775
2776   if (gtk_widget_get_realized (widget))
2777     {
2778       gdk_window_move_resize (gtk_widget_get_window (widget),
2779                               allocation->x, allocation->y,
2780                               allocation->width, allocation->height);
2781       gdk_window_move_resize (tree_view->priv->header_window,
2782                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2783                               0,
2784                               MAX (tree_view->priv->width, allocation->width),
2785                               tree_view->priv->header_height);
2786       gdk_window_move_resize (tree_view->priv->bin_window,
2787                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2788                               gtk_tree_view_get_effective_header_height (tree_view),
2789                               MAX (tree_view->priv->width, allocation->width),
2790                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2791
2792       if (tree_view->priv->tree == NULL)
2793         invalidate_empty_focus (tree_view);
2794
2795       if (width_changed && tree_view->priv->expander_column)
2796         {
2797           /* Might seem awkward, but is the best heuristic I could come up
2798            * with.  Only if the width of the columns before the expander
2799            * changes, we will update the prelight status.  It is this
2800            * width that makes the expander move vertically.  Always updating
2801            * prelight status causes trouble with hover selections.
2802            */
2803           gint width_before_expander;
2804
2805           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2806
2807           if (tree_view->priv->prev_width_before_expander
2808               != width_before_expander)
2809               update_prelight (tree_view,
2810                                tree_view->priv->event_last_x,
2811                                tree_view->priv->event_last_y);
2812
2813           tree_view->priv->prev_width_before_expander = width_before_expander;
2814         }
2815     }
2816 }
2817
2818 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2819 static void
2820 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2821 {
2822   GtkWidget *widget = GTK_WIDGET (tree_view);
2823
2824   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2825     gtk_widget_grab_focus (widget);
2826   tree_view->priv->draw_keyfocus = 0;
2827 }
2828
2829 static inline gboolean
2830 row_is_separator (GtkTreeView *tree_view,
2831                   GtkTreeIter *iter,
2832                   GtkTreePath *path)
2833 {
2834   gboolean is_separator = FALSE;
2835
2836   if (tree_view->priv->row_separator_func)
2837     {
2838       GtkTreeIter tmpiter;
2839
2840       if (iter)
2841         tmpiter = *iter;
2842       else
2843         {
2844           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2845             return FALSE;
2846         }
2847
2848       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2849                                                           &tmpiter,
2850                                                           tree_view->priv->row_separator_data);
2851     }
2852
2853   return is_separator;
2854 }
2855
2856 static int
2857 gtk_tree_view_get_expander_size (GtkTreeView *tree_view)
2858 {
2859   gint expander_size;
2860
2861   gtk_widget_style_get (GTK_WIDGET (tree_view),
2862                         "expander-size", &expander_size,
2863                         NULL);
2864   expander_size += EXPANDER_EXTRA_PADDING;
2865
2866   return expander_size;
2867 }
2868
2869 static gboolean
2870 gtk_tree_view_button_press (GtkWidget      *widget,
2871                             GdkEventButton *event)
2872 {
2873   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2874   GList *list;
2875   GtkTreeViewColumn *column = NULL;
2876   gint i;
2877   GdkRectangle background_area;
2878   GdkRectangle cell_area;
2879   gint vertical_separator;
2880   gint horizontal_separator;
2881   gboolean path_is_selectable;
2882   gboolean rtl;
2883
2884   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2885   gtk_tree_view_stop_editing (tree_view, FALSE);
2886   gtk_widget_style_get (widget,
2887                         "vertical-separator", &vertical_separator,
2888                         "horizontal-separator", &horizontal_separator,
2889                         NULL);
2890
2891   /* Don't handle extra mouse buttons events, let them bubble up */
2892   if (event->button > 5)
2893     return FALSE;
2894
2895   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2896    * we're done handling the button press.
2897    */
2898
2899   if (event->window == tree_view->priv->bin_window)
2900     {
2901       GtkRBNode *node;
2902       GtkRBTree *tree;
2903       GtkTreePath *path;
2904       gint depth;
2905       gint new_y;
2906       gint y_offset;
2907       gint dval;
2908       gint pre_val, aft_val;
2909       GtkTreeViewColumn *column = NULL;
2910       gint column_handled_click = FALSE;
2911       gboolean row_double_click = FALSE;
2912       gboolean rtl;
2913       gboolean node_selected;
2914       GdkModifierType extend_mod_mask;
2915       GdkModifierType modify_mod_mask;
2916
2917       /* Empty tree? */
2918       if (tree_view->priv->tree == NULL)
2919         {
2920           grab_focus_and_unset_draw_keyfocus (tree_view);
2921           return TRUE;
2922         }
2923
2924       /* are we in an arrow? */
2925       if (tree_view->priv->prelight_node &&
2926           tree_view->priv->arrow_prelit &&
2927           gtk_tree_view_draw_expanders (tree_view))
2928         {
2929           if (event->button == GDK_BUTTON_PRIMARY)
2930             {
2931               gtk_grab_add (widget);
2932               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2933               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2934               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2935                                               tree_view->priv->prelight_tree,
2936                                               tree_view->priv->prelight_node);
2937             }
2938
2939           grab_focus_and_unset_draw_keyfocus (tree_view);
2940           return TRUE;
2941         }
2942
2943       /* find the node that was clicked */
2944       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2945       if (new_y < 0)
2946         new_y = 0;
2947       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2948
2949       if (node == NULL)
2950         {
2951           /* We clicked in dead space */
2952           grab_focus_and_unset_draw_keyfocus (tree_view);
2953           return TRUE;
2954         }
2955
2956       /* Get the path and the node */
2957       path = _gtk_tree_path_new_from_rbtree (tree, node);
2958       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2959
2960       if (!path_is_selectable)
2961         {
2962           gtk_tree_path_free (path);
2963           grab_focus_and_unset_draw_keyfocus (tree_view);
2964           return TRUE;
2965         }
2966
2967       depth = gtk_tree_path_get_depth (path);
2968       background_area.y = y_offset + event->y;
2969       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2970       background_area.x = 0;
2971
2972
2973       /* Let the column have a chance at selecting it. */
2974       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2975       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2976            list; list = (rtl ? list->prev : list->next))
2977         {
2978           GtkTreeViewColumn *candidate = list->data;
2979
2980           if (!gtk_tree_view_column_get_visible (candidate))
2981             continue;
2982
2983           background_area.width = gtk_tree_view_column_get_width (candidate);
2984           if ((background_area.x > (gint) event->x) ||
2985               (background_area.x + background_area.width <= (gint) event->x))
2986             {
2987               background_area.x += background_area.width;
2988               continue;
2989             }
2990
2991           /* we found the focus column */
2992           column = candidate;
2993           cell_area = background_area;
2994           cell_area.width -= horizontal_separator;
2995           cell_area.height -= vertical_separator;
2996           cell_area.x += horizontal_separator/2;
2997           cell_area.y += vertical_separator/2;
2998           if (gtk_tree_view_is_expander_column (tree_view, column))
2999             {
3000               if (!rtl)
3001                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
3002               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
3003
3004               if (gtk_tree_view_draw_expanders (tree_view))
3005                 {
3006                   gint expander_size = gtk_tree_view_get_expander_size (tree_view);
3007                   if (!rtl)
3008                     cell_area.x += depth * expander_size;
3009                   cell_area.width -= depth * expander_size;
3010                 }
3011             }
3012           break;
3013         }
3014
3015       if (column == NULL)
3016         {
3017           gtk_tree_path_free (path);
3018           grab_focus_and_unset_draw_keyfocus (tree_view);
3019           return FALSE;
3020         }
3021
3022       _gtk_tree_view_set_focus_column (tree_view, column);
3023
3024       /* decide if we edit */
3025       if (event->type == GDK_BUTTON_PRESS && event->button == GDK_BUTTON_PRIMARY &&
3026           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3027         {
3028           GtkTreePath *anchor;
3029           GtkTreeIter iter;
3030
3031           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3032           gtk_tree_view_column_cell_set_cell_data (column,
3033                                                    tree_view->priv->model,
3034                                                    &iter,
3035                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3036                                                    node->children?TRUE:FALSE);
3037
3038           if (tree_view->priv->anchor)
3039             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3040           else
3041             anchor = NULL;
3042
3043           if ((anchor && !gtk_tree_path_compare (anchor, path))
3044               || !_gtk_tree_view_column_has_editable_cell (column))
3045             {
3046               GtkCellEditable *cell_editable = NULL;
3047
3048               /* FIXME: get the right flags */
3049               guint flags = 0;
3050
3051               if (_gtk_tree_view_column_cell_event (column,
3052                                                     (GdkEvent *)event,
3053                                                     &cell_area, flags))
3054                 {
3055                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3056                   cell_editable = gtk_cell_area_get_edit_widget (area);
3057
3058                   if (cell_editable != NULL)
3059                     {
3060                       gtk_tree_path_free (path);
3061                       gtk_tree_path_free (anchor);
3062                       return TRUE;
3063                     }
3064                   column_handled_click = TRUE;
3065                 }
3066             }
3067           if (anchor)
3068             gtk_tree_path_free (anchor);
3069         }
3070
3071       extend_mod_mask =
3072         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3073
3074       modify_mod_mask =
3075         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3076
3077       /* select */
3078       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3079       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3080
3081       /* we only handle selection modifications on the first button press
3082        */
3083       if (event->type == GDK_BUTTON_PRESS)
3084         {
3085           GtkCellRenderer *focus_cell;
3086
3087           if ((event->state & modify_mod_mask) == modify_mod_mask)
3088             tree_view->priv->modify_selection_pressed = TRUE;
3089           if ((event->state & extend_mod_mask) == extend_mod_mask)
3090             tree_view->priv->extend_selection_pressed = TRUE;
3091
3092           /* We update the focus cell here, this is also needed if the
3093            * column does not contain an editable cell.  In this case,
3094            * GtkCellArea did not receive the event for processing (and
3095            * could not update the focus cell).
3096            */
3097           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3098                                                               &cell_area,
3099                                                               &background_area,
3100                                                               event->x,
3101                                                               event->y);
3102
3103           if (focus_cell)
3104             gtk_tree_view_column_focus_cell (column, focus_cell);
3105
3106           if (event->state & modify_mod_mask)
3107             {
3108               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3109               gtk_tree_view_real_toggle_cursor_row (tree_view);
3110             }
3111           else if (event->state & extend_mod_mask)
3112             {
3113               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3114               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3115             }
3116           else
3117             {
3118               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3119             }
3120
3121           tree_view->priv->modify_selection_pressed = FALSE;
3122           tree_view->priv->extend_selection_pressed = FALSE;
3123         }
3124
3125       /* the treeview may have been scrolled because of _set_cursor,
3126        * correct here
3127        */
3128
3129       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3130       dval = pre_val - aft_val;
3131
3132       cell_area.y += dval;
3133       background_area.y += dval;
3134
3135       /* Save press to possibly begin a drag
3136        */
3137       if (!column_handled_click &&
3138           !tree_view->priv->in_grab &&
3139           tree_view->priv->pressed_button < 0)
3140         {
3141           tree_view->priv->pressed_button = event->button;
3142           tree_view->priv->press_start_x = event->x;
3143           tree_view->priv->press_start_y = event->y;
3144
3145           if (tree_view->priv->rubber_banding_enable
3146               && !node_selected
3147               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3148             {
3149               tree_view->priv->press_start_y += tree_view->priv->dy;
3150               tree_view->priv->rubber_band_x = event->x;
3151               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3152               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3153
3154               if ((event->state & modify_mod_mask) == modify_mod_mask)
3155                 tree_view->priv->rubber_band_modify = TRUE;
3156               if ((event->state & extend_mod_mask) == extend_mod_mask)
3157                 tree_view->priv->rubber_band_extend = TRUE;
3158             }
3159         }
3160
3161       /* Test if a double click happened on the same row. */
3162       if (event->button == GDK_BUTTON_PRIMARY && event->type == GDK_BUTTON_PRESS)
3163         {
3164           int double_click_time, double_click_distance;
3165
3166           g_object_get (gtk_settings_get_default (),
3167                         "gtk-double-click-time", &double_click_time,
3168                         "gtk-double-click-distance", &double_click_distance,
3169                         NULL);
3170
3171           /* Same conditions as _gdk_event_button_generate */
3172           if (tree_view->priv->last_button_x != -1 &&
3173               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3174               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3175               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3176             {
3177               /* We do no longer compare paths of this row and the
3178                * row clicked previously.  We use the double click
3179                * distance to decide whether this is a valid click,
3180                * allowing the mouse to slightly move over another row.
3181                */
3182               row_double_click = TRUE;
3183
3184               tree_view->priv->last_button_time = 0;
3185               tree_view->priv->last_button_x = -1;
3186               tree_view->priv->last_button_y = -1;
3187             }
3188           else
3189             {
3190               tree_view->priv->last_button_time = event->time;
3191               tree_view->priv->last_button_x = event->x;
3192               tree_view->priv->last_button_y = event->y;
3193             }
3194         }
3195
3196       if (row_double_click)
3197         {
3198           gtk_grab_remove (widget);
3199           gtk_tree_view_row_activated (tree_view, path, column);
3200
3201           if (tree_view->priv->pressed_button == event->button)
3202             tree_view->priv->pressed_button = -1;
3203         }
3204
3205       gtk_tree_path_free (path);
3206
3207       /* If we activated the row through a double click we don't want to grab
3208        * focus back, as moving focus to another widget is pretty common.
3209        */
3210       if (!row_double_click)
3211         grab_focus_and_unset_draw_keyfocus (tree_view);
3212
3213       return TRUE;
3214     }
3215
3216   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3217    */
3218   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3219     {
3220       column = list->data;
3221       if (event->window == _gtk_tree_view_column_get_window (column) &&
3222           gtk_tree_view_column_get_resizable (column) &&
3223           _gtk_tree_view_column_get_window (column))
3224         {
3225           gpointer drag_data;
3226
3227           if (event->type == GDK_2BUTTON_PRESS &&
3228               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3229             {
3230               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3231               _gtk_tree_view_column_autosize (tree_view, column);
3232               return TRUE;
3233             }
3234
3235           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3236                                _gtk_tree_view_column_get_window (column),
3237                                GDK_OWNERSHIP_NONE,
3238                                FALSE,
3239                                GDK_POINTER_MOTION_HINT_MASK
3240                                 | GDK_BUTTON1_MOTION_MASK
3241                                 | GDK_BUTTON_RELEASE_MASK,
3242                                NULL,
3243                                event->time) != GDK_GRAB_SUCCESS)
3244             return FALSE;
3245
3246           gtk_grab_add (widget);
3247           tree_view->priv->in_column_resize = TRUE;
3248
3249           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3250                                                    tree_view->priv->last_extra_space_per_column);
3251
3252           /* block attached dnd signal handler */
3253           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3254           if (drag_data)
3255             g_signal_handlers_block_matched (widget,
3256                                              G_SIGNAL_MATCH_DATA,
3257                                              0, 0, NULL, NULL,
3258                                              drag_data);
3259
3260           tree_view->priv->drag_pos = i;
3261           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3262
3263           if (!gtk_widget_has_focus (widget))
3264             gtk_widget_grab_focus (widget);
3265
3266           return TRUE;
3267         }
3268     }
3269   return FALSE;
3270 }
3271
3272 /* GtkWidget::button_release_event helper */
3273 static gboolean
3274 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3275                                           GdkEventButton *event)
3276 {
3277   GtkTreeView *tree_view;
3278   GtkWidget *button;
3279   GList *l;
3280   gboolean rtl;
3281   GdkDevice *device, *other;
3282
3283   tree_view = GTK_TREE_VIEW (widget);
3284
3285   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3286   device = gdk_event_get_device ((GdkEvent*)event);
3287   other = gdk_device_get_associated_device (device);
3288   gdk_device_ungrab (device, event->time);
3289   gdk_device_ungrab (other, event->time);
3290
3291   /* Move the button back */
3292   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3293   g_object_ref (button);
3294   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3295   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3296   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3297   g_object_unref (button);
3298   gtk_widget_queue_resize (widget);
3299   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3300     {
3301       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3302       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3303     }
3304   else
3305     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3306
3307   gtk_widget_grab_focus (button);
3308
3309   if (rtl)
3310     {
3311       if (tree_view->priv->cur_reorder &&
3312           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3313         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3314                                          tree_view->priv->cur_reorder->right_column);
3315     }
3316   else
3317     {
3318       if (tree_view->priv->cur_reorder &&
3319           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3320         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3321                                          tree_view->priv->cur_reorder->left_column);
3322     }
3323   tree_view->priv->drag_column = NULL;
3324   gdk_window_hide (tree_view->priv->drag_window);
3325
3326   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3327     g_slice_free (GtkTreeViewColumnReorder, l->data);
3328   g_list_free (tree_view->priv->column_drag_info);
3329   tree_view->priv->column_drag_info = NULL;
3330   tree_view->priv->cur_reorder = NULL;
3331
3332   if (tree_view->priv->drag_highlight_window)
3333     gdk_window_hide (tree_view->priv->drag_highlight_window);
3334
3335   /* Reset our flags */
3336   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3337   tree_view->priv->in_column_drag = FALSE;
3338
3339   return TRUE;
3340 }
3341
3342 /* GtkWidget::button_release_event helper */
3343 static gboolean
3344 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3345                                             GdkEventButton *event)
3346 {
3347   GtkTreeView *tree_view;
3348   gpointer drag_data;
3349
3350   tree_view = GTK_TREE_VIEW (widget);
3351
3352   tree_view->priv->drag_pos = -1;
3353
3354   /* unblock attached dnd signal handler */
3355   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3356   if (drag_data)
3357     g_signal_handlers_unblock_matched (widget,
3358                                        G_SIGNAL_MATCH_DATA,
3359                                        0, 0, NULL, NULL,
3360                                        drag_data);
3361
3362   tree_view->priv->in_column_resize = FALSE;
3363   gtk_grab_remove (widget);
3364   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3365   return TRUE;
3366 }
3367
3368 static gboolean
3369 gtk_tree_view_button_release (GtkWidget      *widget,
3370                               GdkEventButton *event)
3371 {
3372   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3373
3374   if (tree_view->priv->in_column_drag)
3375     return gtk_tree_view_button_release_drag_column (widget, event);
3376
3377   if (tree_view->priv->rubber_band_status)
3378     gtk_tree_view_stop_rubber_band (tree_view);
3379
3380   if (tree_view->priv->pressed_button == event->button)
3381     tree_view->priv->pressed_button = -1;
3382
3383   if (tree_view->priv->in_column_resize)
3384     return gtk_tree_view_button_release_column_resize (widget, event);
3385
3386   if (tree_view->priv->button_pressed_node == NULL)
3387     return FALSE;
3388
3389   if (event->button == GDK_BUTTON_PRIMARY)
3390     {
3391       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3392           tree_view->priv->arrow_prelit)
3393         {
3394           GtkTreePath *path = NULL;
3395
3396           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3397                                                  tree_view->priv->button_pressed_node);
3398           /* Actually activate the node */
3399           if (tree_view->priv->button_pressed_node->children == NULL)
3400             gtk_tree_view_real_expand_row (tree_view, path,
3401                                            tree_view->priv->button_pressed_tree,
3402                                            tree_view->priv->button_pressed_node,
3403                                            FALSE, TRUE);
3404           else
3405             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3406                                              tree_view->priv->button_pressed_tree,
3407                                              tree_view->priv->button_pressed_node, TRUE);
3408           gtk_tree_path_free (path);
3409         }
3410
3411       gtk_grab_remove (widget);
3412       tree_view->priv->button_pressed_tree = NULL;
3413       tree_view->priv->button_pressed_node = NULL;
3414     }
3415
3416   return TRUE;
3417 }
3418
3419 static gboolean
3420 gtk_tree_view_grab_broken (GtkWidget          *widget,
3421                            GdkEventGrabBroken *event)
3422 {
3423   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3424
3425   if (tree_view->priv->in_column_drag)
3426     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3427
3428   if (tree_view->priv->in_column_resize)
3429     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3430
3431   return TRUE;
3432 }
3433
3434 #if 0
3435 static gboolean
3436 gtk_tree_view_configure (GtkWidget *widget,
3437                          GdkEventConfigure *event)
3438 {
3439   GtkTreeView *tree_view;
3440
3441   tree_view = GTK_TREE_VIEW (widget);
3442   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3443
3444   return FALSE;
3445 }
3446 #endif
3447
3448 /* GtkWidget::motion_event function set.
3449  */
3450
3451 static gboolean
3452 coords_are_over_arrow (GtkTreeView *tree_view,
3453                        GtkRBTree   *tree,
3454                        GtkRBNode   *node,
3455                        /* these are in bin window coords */
3456                        gint         x,
3457                        gint         y)
3458 {
3459   GdkRectangle arrow;
3460   gint x2;
3461
3462   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3463     return FALSE;
3464
3465   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3466     return FALSE;
3467
3468   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3469   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3470
3471   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3472
3473   arrow.width = x2 - arrow.x;
3474
3475   return (x >= arrow.x &&
3476           x < (arrow.x + arrow.width) &&
3477           y >= arrow.y &&
3478           y < (arrow.y + arrow.height));
3479 }
3480
3481 static gboolean
3482 auto_expand_timeout (gpointer data)
3483 {
3484   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3485   GtkTreePath *path;
3486
3487   if (tree_view->priv->prelight_node)
3488     {
3489       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3490                                              tree_view->priv->prelight_node);
3491
3492       if (tree_view->priv->prelight_node->children)
3493         gtk_tree_view_collapse_row (tree_view, path);
3494       else
3495         gtk_tree_view_expand_row (tree_view, path, FALSE);
3496
3497       gtk_tree_path_free (path);
3498     }
3499
3500   tree_view->priv->auto_expand_timeout = 0;
3501
3502   return FALSE;
3503 }
3504
3505 static void
3506 remove_auto_expand_timeout (GtkTreeView *tree_view)
3507 {
3508   if (tree_view->priv->auto_expand_timeout != 0)
3509     {
3510       g_source_remove (tree_view->priv->auto_expand_timeout);
3511       tree_view->priv->auto_expand_timeout = 0;
3512     }
3513 }
3514
3515 static void
3516 do_prelight (GtkTreeView *tree_view,
3517              GtkRBTree   *tree,
3518              GtkRBNode   *node,
3519              /* these are in bin_window coords */
3520              gint         x,
3521              gint         y)
3522 {
3523   if (tree_view->priv->prelight_tree == tree &&
3524       tree_view->priv->prelight_node == node)
3525     {
3526       /*  We are still on the same node,
3527           but we might need to take care of the arrow  */
3528
3529       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3530         {
3531           gboolean over_arrow;
3532
3533           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3534
3535           if (over_arrow != tree_view->priv->arrow_prelit)
3536             {
3537               if (over_arrow)
3538                 tree_view->priv->arrow_prelit = TRUE;
3539               else
3540                 tree_view->priv->arrow_prelit = FALSE;
3541
3542               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3543             }
3544         }
3545
3546       return;
3547     }
3548
3549   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3550     {
3551       /*  Unprelight the old node and arrow  */
3552
3553       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3554                              GTK_RBNODE_IS_PRELIT);
3555
3556       if (tree_view->priv->arrow_prelit
3557           && gtk_tree_view_draw_expanders (tree_view))
3558         {
3559           tree_view->priv->arrow_prelit = FALSE;
3560
3561           gtk_tree_view_queue_draw_arrow (tree_view,
3562                                           tree_view->priv->prelight_tree,
3563                                           tree_view->priv->prelight_node);
3564         }
3565
3566       _gtk_tree_view_queue_draw_node (tree_view,
3567                                       tree_view->priv->prelight_tree,
3568                                       tree_view->priv->prelight_node,
3569                                       NULL);
3570     }
3571
3572
3573   if (tree_view->priv->hover_expand)
3574     remove_auto_expand_timeout (tree_view);
3575
3576   /*  Set the new prelight values  */
3577   tree_view->priv->prelight_node = node;
3578   tree_view->priv->prelight_tree = tree;
3579
3580   if (!node || !tree)
3581     return;
3582
3583   /*  Prelight the new node and arrow  */
3584
3585   if (gtk_tree_view_draw_expanders (tree_view)
3586       && coords_are_over_arrow (tree_view, tree, node, x, y))
3587     {
3588       tree_view->priv->arrow_prelit = TRUE;
3589
3590       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3591     }
3592
3593   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3594
3595   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3596
3597   if (tree_view->priv->hover_expand)
3598     {
3599       tree_view->priv->auto_expand_timeout =
3600         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3601     }
3602 }
3603
3604 static void
3605 prelight_or_select (GtkTreeView *tree_view,
3606                     GtkRBTree   *tree,
3607                     GtkRBNode   *node,
3608                     /* these are in bin_window coords */
3609                     gint         x,
3610                     gint         y)
3611 {
3612   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3613
3614   if (tree_view->priv->hover_selection &&
3615       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3616       !(tree_view->priv->edited_column &&
3617         gtk_cell_area_get_edit_widget
3618         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3619     {
3620       if (node)
3621         {
3622           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3623             {
3624               GtkTreePath *path;
3625
3626               path = _gtk_tree_path_new_from_rbtree (tree, node);
3627               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3628               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3629                 {
3630                   tree_view->priv->draw_keyfocus = FALSE;
3631                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3632                 }
3633               gtk_tree_path_free (path);
3634             }
3635         }
3636
3637       else if (mode == GTK_SELECTION_SINGLE)
3638         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3639     }
3640
3641     do_prelight (tree_view, tree, node, x, y);
3642 }
3643
3644 static void
3645 ensure_unprelighted (GtkTreeView *tree_view)
3646 {
3647   do_prelight (tree_view,
3648                NULL, NULL,
3649                -1000, -1000); /* coords not possibly over an arrow */
3650
3651   g_assert (tree_view->priv->prelight_node == NULL);
3652 }
3653
3654 static void
3655 update_prelight (GtkTreeView *tree_view,
3656                  gint         x,
3657                  gint         y)
3658 {
3659   int new_y;
3660   GtkRBTree *tree;
3661   GtkRBNode *node;
3662
3663   if (tree_view->priv->tree == NULL)
3664     return;
3665
3666   if (x == -10000)
3667     {
3668       ensure_unprelighted (tree_view);
3669       return;
3670     }
3671
3672   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3673   if (new_y < 0)
3674     new_y = 0;
3675
3676   _gtk_rbtree_find_offset (tree_view->priv->tree,
3677                            new_y, &tree, &node);
3678
3679   if (node)
3680     prelight_or_select (tree_view, tree, node, x, y);
3681 }
3682
3683
3684
3685
3686 /* Our motion arrow is either a box (in the case of the original spot)
3687  * or an arrow.  It is expander_size wide.
3688  */
3689 /*
3690  * 11111111111111
3691  * 01111111111110
3692  * 00111111111100
3693  * 00011111111000
3694  * 00001111110000
3695  * 00000111100000
3696  * 00000111100000
3697  * 00000111100000
3698  * ~ ~ ~ ~ ~ ~ ~
3699  * 00000111100000
3700  * 00000111100000
3701  * 00000111100000
3702  * 00001111110000
3703  * 00011111111000
3704  * 00111111111100
3705  * 01111111111110
3706  * 11111111111111
3707  */
3708
3709 static void
3710 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3711 {
3712   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3713   GtkWidget *widget = GTK_WIDGET (tree_view);
3714   cairo_surface_t *mask_image;
3715   cairo_region_t *mask_region;
3716   gint x;
3717   gint y;
3718   gint width;
3719   gint height;
3720   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3721   GdkWindowAttr attributes;
3722   guint attributes_mask;
3723   cairo_t *cr;
3724
3725   if (!reorder ||
3726       reorder->left_column == tree_view->priv->drag_column ||
3727       reorder->right_column == tree_view->priv->drag_column)
3728     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3729   else if (reorder->left_column || reorder->right_column)
3730     {
3731       GtkAllocation left_allocation, right_allocation;
3732       GdkRectangle visible_rect;
3733       GtkWidget *button;
3734
3735       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3736       if (reorder->left_column)
3737         {
3738           button = gtk_tree_view_column_get_button (reorder->left_column);
3739           gtk_widget_get_allocation (button, &left_allocation);
3740           x = left_allocation.x + left_allocation.width;
3741         }
3742       else
3743         {
3744           button = gtk_tree_view_column_get_button (reorder->right_column);
3745           gtk_widget_get_allocation (button, &right_allocation);
3746           x = right_allocation.x;
3747         }
3748
3749       if (x < visible_rect.x)
3750         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3751       else if (x > visible_rect.x + visible_rect.width)
3752         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3753       else
3754         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3755     }
3756
3757   /* We want to draw the rectangle over the initial location. */
3758   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3759     {
3760       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3761         {
3762           GtkAllocation drag_allocation;
3763           GtkWidget    *button;
3764
3765           if (tree_view->priv->drag_highlight_window)
3766             {
3767               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3768                                         NULL);
3769               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3770             }
3771
3772           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3773           attributes.window_type = GDK_WINDOW_CHILD;
3774           attributes.wclass = GDK_INPUT_OUTPUT;
3775           attributes.x = tree_view->priv->drag_column_x;
3776           attributes.y = 0;
3777           gtk_widget_get_allocation (button, &drag_allocation);
3778           width = attributes.width = drag_allocation.width;
3779           height = attributes.height = drag_allocation.height;
3780           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3781           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3782           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3783           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3784           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3785
3786           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3787           cr = cairo_create (mask_image);
3788
3789           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3790           cairo_stroke (cr);
3791           cairo_destroy (cr);
3792
3793           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3794           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3795                                            mask_region, 0, 0);
3796
3797           cairo_region_destroy (mask_region);
3798           cairo_surface_destroy (mask_image);
3799
3800           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3801         }
3802     }
3803   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3804     {
3805       GtkAllocation button_allocation;
3806       GtkWidget    *button;
3807
3808       width = gtk_tree_view_get_expander_size (tree_view);
3809
3810       /* Get x, y, width, height of arrow */
3811       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3812       if (reorder->left_column)
3813         {
3814           button = gtk_tree_view_column_get_button (reorder->left_column);
3815           gtk_widget_get_allocation (button, &button_allocation);
3816           x += button_allocation.x + button_allocation.width - width/2;
3817           height = button_allocation.height;
3818         }
3819       else
3820         {
3821           button = gtk_tree_view_column_get_button (reorder->right_column);
3822           gtk_widget_get_allocation (button, &button_allocation);
3823           x += button_allocation.x - width/2;
3824           height = button_allocation.height;
3825         }
3826       y -= width/2; /* The arrow takes up only half the space */
3827       height += width;
3828
3829       /* Create the new window */
3830       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3831         {
3832           if (tree_view->priv->drag_highlight_window)
3833             {
3834               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3835                                         NULL);
3836               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3837             }
3838
3839           attributes.window_type = GDK_WINDOW_TEMP;
3840           attributes.wclass = GDK_INPUT_OUTPUT;
3841           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3842           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3843           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3844           attributes.x = x;
3845           attributes.y = y;
3846           attributes.width = width;
3847           attributes.height = height;
3848           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3849                                                                    &attributes, attributes_mask);
3850           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3851
3852           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3853
3854           cr = cairo_create (mask_image);
3855           cairo_move_to (cr, 0, 0);
3856           cairo_line_to (cr, width, 0);
3857           cairo_line_to (cr, width / 2., width / 2);
3858           cairo_move_to (cr, 0, height);
3859           cairo_line_to (cr, width, height);
3860           cairo_line_to (cr, width / 2., height - width / 2.);
3861           cairo_fill (cr);
3862           cairo_destroy (cr);
3863
3864           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3865           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3866                                            mask_region, 0, 0);
3867
3868           cairo_region_destroy (mask_region);
3869           cairo_surface_destroy (mask_image);
3870         }
3871
3872       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3873       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3874     }
3875   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3876            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3877     {
3878       GtkAllocation allocation;
3879       GtkWidget    *button;
3880       gint          expander_size;
3881
3882       expander_size = gtk_tree_view_get_expander_size (tree_view);
3883
3884       /* Get x, y, width, height of arrow */
3885       width = expander_size/2; /* remember, the arrow only takes half the available width */
3886       gdk_window_get_origin (gtk_widget_get_window (widget),
3887                              &x, &y);
3888       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3889         {
3890           gtk_widget_get_allocation (widget, &allocation);
3891           x += allocation.width - width;
3892         }
3893
3894       if (reorder->left_column)
3895         {
3896           button = gtk_tree_view_column_get_button (reorder->left_column);
3897           gtk_widget_get_allocation (button, &allocation);
3898           height = allocation.height;
3899         }
3900       else
3901         {
3902           button = gtk_tree_view_column_get_button (reorder->right_column);
3903           gtk_widget_get_allocation (button, &allocation);
3904           height = allocation.height;
3905         }
3906
3907       y -= expander_size;
3908       height += 2 * expander_size;
3909
3910       /* Create the new window */
3911       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3912           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3913         {
3914           if (tree_view->priv->drag_highlight_window)
3915             {
3916               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3917                                         NULL);
3918               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3919             }
3920
3921           attributes.window_type = GDK_WINDOW_TEMP;
3922           attributes.wclass = GDK_INPUT_OUTPUT;
3923           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3924           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3925           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3926           attributes.x = x;
3927           attributes.y = y;
3928           attributes.width = width;
3929           attributes.height = height;
3930           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3931           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3932
3933           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3934
3935           cr = cairo_create (mask_image);
3936           /* mirror if we're on the left */
3937           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3938             {
3939               cairo_translate (cr, width, 0);
3940               cairo_scale (cr, -1, 1);
3941             }
3942           cairo_move_to (cr, 0, 0);
3943           cairo_line_to (cr, width, width);
3944           cairo_line_to (cr, 0, expander_size);
3945           cairo_move_to (cr, 0, height);
3946           cairo_line_to (cr, width, height - width);
3947           cairo_line_to (cr, 0, height - expander_size);
3948           cairo_fill (cr);
3949           cairo_destroy (cr);
3950
3951           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3952           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3953                                            mask_region, 0, 0);
3954
3955           cairo_region_destroy (mask_region);
3956           cairo_surface_destroy (mask_image);
3957         }
3958
3959       tree_view->priv->drag_column_window_state = arrow_type;
3960       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3961    }
3962   else
3963     {
3964       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3965       gdk_window_hide (tree_view->priv->drag_highlight_window);
3966       return;
3967     }
3968
3969   gdk_window_show (tree_view->priv->drag_highlight_window);
3970   gdk_window_raise (tree_view->priv->drag_highlight_window);
3971 }
3972
3973 static gboolean
3974 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3975                                     GdkEventMotion *event)
3976 {
3977   gint x;
3978   gint new_width;
3979   GtkTreeViewColumn *column;
3980   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3981
3982   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3983
3984   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3985     gdk_window_get_device_position (gtk_widget_get_window (widget),
3986                                     gdk_event_get_device ((GdkEvent *) event),
3987                                     &x, NULL, NULL);
3988   else
3989     x = event->x;
3990
3991   if (tree_view->priv->hadjustment)
3992     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3993
3994   new_width = gtk_tree_view_new_column_width (tree_view,
3995                                               tree_view->priv->drag_pos, &x);
3996   if (x != tree_view->priv->x_drag &&
3997       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3998     {
3999       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
4000
4001       if (gtk_tree_view_column_get_expand (column))
4002         new_width -= tree_view->priv->last_extra_space_per_column;
4003
4004       _gtk_tree_view_column_set_resized_width (column, new_width);
4005
4006
4007       gtk_widget_queue_resize (widget);
4008     }
4009
4010   return FALSE;
4011 }
4012
4013
4014 static void
4015 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
4016                                       GdkEvent    *event)
4017 {
4018   GtkTreeViewColumnReorder *reorder = NULL;
4019   GList *list;
4020   gint mouse_x;
4021
4022   gdk_window_get_device_position (tree_view->priv->header_window,
4023                                   gdk_event_get_device (event),
4024                                   &mouse_x, NULL, NULL);
4025   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4026     {
4027       reorder = (GtkTreeViewColumnReorder *) list->data;
4028       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4029         break;
4030       reorder = NULL;
4031     }
4032
4033   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4034       return;*/
4035
4036   tree_view->priv->cur_reorder = reorder;
4037   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4038 }
4039
4040 static void
4041 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4042 {
4043   GdkRectangle visible_rect;
4044   gint y;
4045   gint offset;
4046
4047   gdk_window_get_device_position (tree_view->priv->bin_window,
4048                                   gdk_device_manager_get_client_pointer (
4049                                     gdk_display_get_device_manager (
4050                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4051                                   NULL, &y, NULL);
4052   y += tree_view->priv->dy;
4053
4054   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4055
4056   /* see if we are near the edge. */
4057   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4058   if (offset > 0)
4059     {
4060       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4061       if (offset < 0)
4062         return;
4063     }
4064
4065   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4066                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4067 }
4068
4069 static gboolean
4070 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4071                                      GdkEvent    *event)
4072 {
4073   GdkRectangle visible_rect;
4074   gint x;
4075   gint offset;
4076
4077   gdk_window_get_device_position (tree_view->priv->bin_window,
4078                                   gdk_event_get_device (event),
4079                                   &x, NULL, NULL);
4080
4081   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4082
4083   /* See if we are near the edge. */
4084   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4085   if (offset > 0)
4086     {
4087       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4088       if (offset < 0)
4089         return TRUE;
4090     }
4091   offset = offset/3;
4092
4093   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4094                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4095
4096   return TRUE;
4097
4098 }
4099
4100 static gboolean
4101 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4102                                   GdkEventMotion *event)
4103 {
4104   GtkAllocation allocation, button_allocation;
4105   GtkTreeView *tree_view = (GtkTreeView *) widget;
4106   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4107   GtkWidget *button;
4108   gint x, y;
4109
4110   /* Sanity Check */
4111   if ((column == NULL) ||
4112       (event->window != tree_view->priv->drag_window))
4113     return FALSE;
4114
4115   button = gtk_tree_view_column_get_button (column);
4116
4117   /* Handle moving the header */
4118   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4119   gtk_widget_get_allocation (widget, &allocation);
4120   gtk_widget_get_allocation (button, &button_allocation);
4121   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4122              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4123   gdk_window_move (tree_view->priv->drag_window, x, y);
4124
4125   /* autoscroll, if needed */
4126   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4127   /* Update the current reorder position and arrow; */
4128   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4129
4130   return TRUE;
4131 }
4132
4133 static void
4134 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4135 {
4136   remove_scroll_timeout (tree_view);
4137   gtk_grab_remove (GTK_WIDGET (tree_view));
4138
4139   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4140     {
4141       GtkTreePath *tmp_path;
4142
4143       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4144
4145       /* The anchor path should be set to the start path */
4146       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4147                                                  tree_view->priv->rubber_band_start_node);
4148
4149       if (tree_view->priv->anchor)
4150         gtk_tree_row_reference_free (tree_view->priv->anchor);
4151
4152       tree_view->priv->anchor =
4153         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4154                                           tree_view->priv->model,
4155                                           tmp_path);
4156
4157       gtk_tree_path_free (tmp_path);
4158
4159       /* ... and the cursor to the end path */
4160       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4161                                                  tree_view->priv->rubber_band_end_node);
4162       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4163       gtk_tree_path_free (tmp_path);
4164
4165       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4166     }
4167
4168   /* Clear status variables */
4169   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4170   tree_view->priv->rubber_band_extend = FALSE;
4171   tree_view->priv->rubber_band_modify = FALSE;
4172
4173   tree_view->priv->rubber_band_start_node = NULL;
4174   tree_view->priv->rubber_band_start_tree = NULL;
4175   tree_view->priv->rubber_band_end_node = NULL;
4176   tree_view->priv->rubber_band_end_tree = NULL;
4177 }
4178
4179 static void
4180 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4181                                                  GtkRBTree   *start_tree,
4182                                                  GtkRBNode   *start_node,
4183                                                  GtkRBTree   *end_tree,
4184                                                  GtkRBNode   *end_node,
4185                                                  gboolean     select,
4186                                                  gboolean     skip_start,
4187                                                  gboolean     skip_end)
4188 {
4189   if (start_node == end_node)
4190     return;
4191
4192   /* We skip the first node and jump inside the loop */
4193   if (skip_start)
4194     goto skip_first;
4195
4196   do
4197     {
4198       /* Small optimization by assuming insensitive nodes are never
4199        * selected.
4200        */
4201       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4202         {
4203           GtkTreePath *path;
4204           gboolean selectable;
4205
4206           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4207           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4208           gtk_tree_path_free (path);
4209
4210           if (!selectable)
4211             goto node_not_selectable;
4212         }
4213
4214       if (select)
4215         {
4216           if (tree_view->priv->rubber_band_extend)
4217             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4218           else if (tree_view->priv->rubber_band_modify)
4219             {
4220               /* Toggle the selection state */
4221               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4222                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4223               else
4224                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4225             }
4226           else
4227             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4228         }
4229       else
4230         {
4231           /* Mirror the above */
4232           if (tree_view->priv->rubber_band_extend)
4233             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4234           else if (tree_view->priv->rubber_band_modify)
4235             {
4236               /* Toggle the selection state */
4237               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4238                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4239               else
4240                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4241             }
4242           else
4243             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4244         }
4245
4246       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4247
4248 node_not_selectable:
4249       if (start_node == end_node)
4250         break;
4251
4252 skip_first:
4253
4254       if (start_node->children)
4255         {
4256           start_tree = start_node->children;
4257           start_node = _gtk_rbtree_first (start_tree);
4258         }
4259       else
4260         {
4261           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4262
4263           if (!start_tree)
4264             /* Ran out of tree */
4265             break;
4266         }
4267
4268       if (skip_end && start_node == end_node)
4269         break;
4270     }
4271   while (TRUE);
4272 }
4273
4274 static void
4275 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4276 {
4277   GtkRBTree *start_tree, *end_tree;
4278   GtkRBNode *start_node, *end_node;
4279
4280   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
4281   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
4282
4283   /* Handle the start area first */
4284   if (!tree_view->priv->rubber_band_start_node)
4285     {
4286       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4287                                                        start_tree,
4288                                                        start_node,
4289                                                        end_tree,
4290                                                        end_node,
4291                                                        TRUE,
4292                                                        FALSE,
4293                                                        FALSE);
4294     }
4295   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4296            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4297     {
4298       /* New node is above the old one; selection became bigger */
4299       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4300                                                        start_tree,
4301                                                        start_node,
4302                                                        tree_view->priv->rubber_band_start_tree,
4303                                                        tree_view->priv->rubber_band_start_node,
4304                                                        TRUE,
4305                                                        FALSE,
4306                                                        TRUE);
4307     }
4308   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4309            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4310     {
4311       /* New node is below the old one; selection became smaller */
4312       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4313                                                        tree_view->priv->rubber_band_start_tree,
4314                                                        tree_view->priv->rubber_band_start_node,
4315                                                        start_tree,
4316                                                        start_node,
4317                                                        FALSE,
4318                                                        FALSE,
4319                                                        TRUE);
4320     }
4321
4322   tree_view->priv->rubber_band_start_tree = start_tree;
4323   tree_view->priv->rubber_band_start_node = start_node;
4324
4325   /* Next, handle the end area */
4326   if (!tree_view->priv->rubber_band_end_node)
4327     {
4328       /* In the event this happens, start_node was also NULL; this case is
4329        * handled above.
4330        */
4331     }
4332   else if (!end_node)
4333     {
4334       /* Find the last node in the tree */
4335       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4336                                &end_tree, &end_node);
4337
4338       /* Selection reached end of the tree */
4339       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4340                                                        tree_view->priv->rubber_band_end_tree,
4341                                                        tree_view->priv->rubber_band_end_node,
4342                                                        end_tree,
4343                                                        end_node,
4344                                                        TRUE,
4345                                                        TRUE,
4346                                                        FALSE);
4347     }
4348   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4349            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4350     {
4351       /* New node is below the old one; selection became bigger */
4352       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4353                                                        tree_view->priv->rubber_band_end_tree,
4354                                                        tree_view->priv->rubber_band_end_node,
4355                                                        end_tree,
4356                                                        end_node,
4357                                                        TRUE,
4358                                                        TRUE,
4359                                                        FALSE);
4360     }
4361   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4362            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4363     {
4364       /* New node is above the old one; selection became smaller */
4365       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4366                                                        end_tree,
4367                                                        end_node,
4368                                                        tree_view->priv->rubber_band_end_tree,
4369                                                        tree_view->priv->rubber_band_end_node,
4370                                                        FALSE,
4371                                                        TRUE,
4372                                                        FALSE);
4373     }
4374
4375   tree_view->priv->rubber_band_end_tree = end_tree;
4376   tree_view->priv->rubber_band_end_node = end_node;
4377 }
4378
4379 static void
4380 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4381 {
4382   gint x, y;
4383   GdkRectangle old_area;
4384   GdkRectangle new_area;
4385   GdkRectangle common;
4386   cairo_region_t *invalid_region;
4387
4388   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4389   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4390   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4391   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4392
4393   gdk_window_get_device_position (tree_view->priv->bin_window,
4394                                   gdk_device_manager_get_client_pointer (
4395                                     gdk_display_get_device_manager (
4396                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4397                                   &x, &y, NULL);
4398
4399   x = MAX (x, 0);
4400   y = MAX (y, 0) + tree_view->priv->dy;
4401
4402   new_area.x = MIN (tree_view->priv->press_start_x, x);
4403   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4404   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4405   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4406
4407   invalid_region = cairo_region_create_rectangle (&old_area);
4408   cairo_region_union_rectangle (invalid_region, &new_area);
4409
4410   gdk_rectangle_intersect (&old_area, &new_area, &common);
4411   if (common.width > 2 && common.height > 2)
4412     {
4413       cairo_region_t *common_region;
4414
4415       /* make sure the border is invalidated */
4416       common.x += 1;
4417       common.y += 1;
4418       common.width -= 2;
4419       common.height -= 2;
4420
4421       common_region = cairo_region_create_rectangle (&common);
4422
4423       cairo_region_subtract (invalid_region, common_region);
4424       cairo_region_destroy (common_region);
4425     }
4426
4427   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4428
4429   cairo_region_destroy (invalid_region);
4430
4431   tree_view->priv->rubber_band_x = x;
4432   tree_view->priv->rubber_band_y = y;
4433
4434   gtk_tree_view_update_rubber_band_selection (tree_view);
4435 }
4436
4437 static void
4438 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4439                                  cairo_t      *cr)
4440 {
4441   GdkRectangle rect;
4442   GtkStyleContext *context;
4443
4444   cairo_save (cr);
4445
4446   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4447
4448   gtk_style_context_save (context);
4449   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4450
4451   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4452   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4453   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4454   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4455
4456   gdk_cairo_rectangle (cr, &rect);
4457   cairo_clip (cr);
4458
4459   gtk_render_background (context, cr,
4460                          rect.x, rect.y,
4461                          rect.width, rect.height);
4462   gtk_render_frame (context, cr,
4463                     rect.x, rect.y,
4464                     rect.width, rect.height);
4465
4466   gtk_style_context_restore (context);
4467   cairo_restore (cr);
4468 }
4469
4470 static gboolean
4471 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4472                                  GdkEventMotion *event)
4473 {
4474   GtkTreeView *tree_view;
4475   GtkRBTree *tree;
4476   GtkRBNode *node;
4477   gint new_y;
4478
4479   tree_view = (GtkTreeView *) widget;
4480
4481   if (tree_view->priv->tree == NULL)
4482     return FALSE;
4483
4484   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4485     {
4486       gtk_grab_add (GTK_WIDGET (tree_view));
4487       gtk_tree_view_update_rubber_band (tree_view);
4488
4489       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4490     }
4491   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4492     {
4493       gtk_tree_view_update_rubber_band (tree_view);
4494
4495       add_scroll_timeout (tree_view);
4496     }
4497
4498   /* only check for an initiated drag when a button is pressed */
4499   if (tree_view->priv->pressed_button >= 0
4500       && !tree_view->priv->rubber_band_status)
4501     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4502
4503   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4504   if (new_y < 0)
4505     new_y = 0;
4506
4507   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4508
4509   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4510   if ((tree_view->priv->button_pressed_node != NULL) &&
4511       (tree_view->priv->button_pressed_node != node))
4512     node = NULL;
4513
4514   tree_view->priv->event_last_x = event->x;
4515   tree_view->priv->event_last_y = event->y;
4516
4517   prelight_or_select (tree_view, tree, node, event->x, event->y);
4518
4519   return TRUE;
4520 }
4521
4522 static gboolean
4523 gtk_tree_view_motion (GtkWidget      *widget,
4524                       GdkEventMotion *event)
4525 {
4526   GtkTreeView *tree_view;
4527
4528   tree_view = (GtkTreeView *) widget;
4529
4530   /* Resizing a column */
4531   if (tree_view->priv->in_column_resize)
4532     return gtk_tree_view_motion_resize_column (widget, event);
4533
4534   /* Drag column */
4535   if (tree_view->priv->in_column_drag)
4536     return gtk_tree_view_motion_drag_column (widget, event);
4537
4538   /* Sanity check it */
4539   if (event->window == tree_view->priv->bin_window)
4540     return gtk_tree_view_motion_bin_window (widget, event);
4541
4542   return FALSE;
4543 }
4544
4545 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4546  * the tree is empty.
4547  */
4548 static void
4549 invalidate_empty_focus (GtkTreeView *tree_view)
4550 {
4551   GdkRectangle area;
4552
4553   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4554     return;
4555
4556   area.x = 0;
4557   area.y = 0;
4558   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4559   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4560   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4561 }
4562
4563 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4564  * is empty.
4565  */
4566 static void
4567 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4568 {
4569   GtkWidget *widget = GTK_WIDGET (tree_view);
4570   gint w, h;
4571
4572   if (!gtk_widget_has_visible_focus (widget))
4573     return;
4574
4575   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4576   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4577
4578   if (w > 0 && h > 0)
4579     {
4580       GtkStyleContext *context;
4581
4582       context = gtk_widget_get_style_context (widget);
4583
4584       gtk_render_focus (context, cr, 1, 1, w, h);
4585     }
4586 }
4587
4588 typedef enum {
4589   GTK_TREE_VIEW_GRID_LINE,
4590   GTK_TREE_VIEW_TREE_LINE,
4591   GTK_TREE_VIEW_FOREGROUND_LINE
4592 } GtkTreeViewLineType;
4593
4594 static void
4595 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4596                          cairo_t             *cr,
4597                          GtkTreeViewLineType  type,
4598                          int                  x1,
4599                          int                  y1,
4600                          int                  x2,
4601                          int                  y2)
4602 {
4603   cairo_save (cr);
4604
4605   switch (type)
4606     {
4607     case GTK_TREE_VIEW_TREE_LINE:
4608       cairo_set_source_rgb (cr, 0, 0, 0);
4609       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4610       if (tree_view->priv->tree_line_dashes[0])
4611         cairo_set_dash (cr,
4612                         tree_view->priv->tree_line_dashes,
4613                         2, 0.5);
4614       break;
4615     case GTK_TREE_VIEW_GRID_LINE:
4616       cairo_set_source_rgb (cr, 0, 0, 0);
4617       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4618       if (tree_view->priv->grid_line_dashes[0])
4619         cairo_set_dash (cr,
4620                         tree_view->priv->grid_line_dashes,
4621                         2, 0.5);
4622       break;
4623     default:
4624       g_assert_not_reached ();
4625       /* fall through */
4626     case GTK_TREE_VIEW_FOREGROUND_LINE:
4627       {
4628         GtkStyleContext *context;
4629         GtkStateFlags state;
4630         GdkRGBA color;
4631
4632         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4633         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4634
4635         cairo_set_line_width (cr, 1.0);
4636         gtk_style_context_get_color (context, state, &color);
4637         gdk_cairo_set_source_rgba (cr, &color);
4638       }
4639
4640       break;
4641     }
4642
4643   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4644   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4645   cairo_stroke (cr);
4646
4647   cairo_restore (cr);
4648 }
4649
4650 static void
4651 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4652                                cairo_t        *cr,
4653                                gint            n_visible_columns)
4654 {
4655   GList *list = tree_view->priv->columns;
4656   gint i = 0;
4657   gint current_x = 0;
4658
4659   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4660       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4661     return;
4662
4663   /* Only draw the lines for visible rows and columns */
4664   for (list = tree_view->priv->columns; list; list = list->next, i++)
4665     {
4666       GtkTreeViewColumn *column = list->data;
4667
4668       /* We don't want a line for the last column */
4669       if (i == n_visible_columns - 1)
4670         break;
4671
4672       if (!gtk_tree_view_column_get_visible (column))
4673         continue;
4674
4675       current_x += gtk_tree_view_column_get_width (column);
4676
4677       gtk_tree_view_draw_line (tree_view, cr,
4678                                GTK_TREE_VIEW_GRID_LINE,
4679                                current_x - 1, 0,
4680                                current_x - 1, tree_view->priv->height);
4681     }
4682 }
4683
4684 /* Warning: Very scary function.
4685  * Modify at your own risk
4686  *
4687  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4688  * FIXME: It's not...
4689  */
4690 static gboolean
4691 gtk_tree_view_bin_draw (GtkWidget      *widget,
4692                         cairo_t        *cr)
4693 {
4694   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4695   GtkTreePath *path;
4696   GtkRBTree *tree;
4697   GList *list;
4698   GtkRBNode *node;
4699   GtkRBNode *drag_highlight = NULL;
4700   GtkRBTree *drag_highlight_tree = NULL;
4701   GtkTreeIter iter;
4702   gint new_y;
4703   gint y_offset, cell_offset;
4704   gint max_height;
4705   gint depth;
4706   GdkRectangle background_area;
4707   GdkRectangle cell_area;
4708   GdkRectangle clip;
4709   guint flags;
4710   gint highlight_x;
4711   gint expander_cell_width;
4712   gint bin_window_width;
4713   gint bin_window_height;
4714   GtkTreePath *drag_dest_path;
4715   GList *first_column, *last_column;
4716   gint vertical_separator;
4717   gint horizontal_separator;
4718   gboolean allow_rules;
4719   gboolean has_can_focus_cell;
4720   gboolean rtl;
4721   gint n_visible_columns;
4722   gint grid_line_width;
4723   gint expander_size;
4724   gboolean draw_vgrid_lines, draw_hgrid_lines;
4725   GtkStyleContext *context;
4726   gboolean parity;
4727
4728   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4729   context = gtk_widget_get_style_context (widget);
4730
4731   gtk_widget_style_get (widget,
4732                         "horizontal-separator", &horizontal_separator,
4733                         "vertical-separator", &vertical_separator,
4734                         "allow-rules", &allow_rules,
4735                         NULL);
4736
4737   if (tree_view->priv->tree == NULL)
4738     {
4739       draw_empty_focus (tree_view, cr);
4740       return TRUE;
4741     }
4742
4743   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4744   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4745   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4746   cairo_clip (cr);
4747   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4748     return TRUE;
4749
4750   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4751
4752   if (new_y < 0)
4753     new_y = 0;
4754   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4755
4756   if (tree_view->priv->height < bin_window_height)
4757     {
4758       gtk_style_context_save (context);
4759       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4760
4761       gtk_render_background (context, cr,
4762                              0, tree_view->priv->height,
4763                              bin_window_width,
4764                              bin_window_height - tree_view->priv->height);
4765
4766       gtk_style_context_restore (context);
4767     }
4768
4769   if (node == NULL)
4770     return TRUE;
4771
4772   /* find the path for the node */
4773   path = _gtk_tree_path_new_from_rbtree (tree, node);
4774   gtk_tree_model_get_iter (tree_view->priv->model,
4775                            &iter,
4776                            path);
4777   depth = gtk_tree_path_get_depth (path);
4778   gtk_tree_path_free (path);
4779
4780   drag_dest_path = NULL;
4781
4782   if (tree_view->priv->drag_dest_row)
4783     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4784
4785   if (drag_dest_path)
4786     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4787                               &drag_highlight_tree, &drag_highlight);
4788
4789   draw_vgrid_lines =
4790     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4791     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4792   draw_hgrid_lines =
4793     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4794     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4795   expander_size = gtk_tree_view_get_expander_size (tree_view);
4796
4797   if (draw_vgrid_lines || draw_hgrid_lines)
4798     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4799
4800   n_visible_columns = 0;
4801   for (list = tree_view->priv->columns; list; list = list->next)
4802     {
4803       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4804         continue;
4805       n_visible_columns ++;
4806     }
4807
4808   /* Find the last column */
4809   for (last_column = g_list_last (tree_view->priv->columns);
4810        last_column &&
4811        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4812        last_column = last_column->prev)
4813     ;
4814
4815   /* and the first */
4816   for (first_column = g_list_first (tree_view->priv->columns);
4817        first_column &&
4818        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4819        first_column = first_column->next)
4820     ;
4821
4822   /* Actually process the expose event.  To do this, we want to
4823    * start at the first node of the event, and walk the tree in
4824    * order, drawing each successive node.
4825    */
4826
4827   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4828
4829   do
4830     {
4831       gboolean is_separator = FALSE;
4832       gboolean is_first = FALSE;
4833       gboolean is_last = FALSE;
4834       gint n_col = 0;
4835
4836       parity = !parity;
4837       is_separator = row_is_separator (tree_view, &iter, NULL);
4838
4839       max_height = gtk_tree_view_get_row_height (tree_view, node);
4840
4841       cell_offset = 0;
4842       highlight_x = 0; /* should match x coord of first cell */
4843       expander_cell_width = 0;
4844
4845       background_area.y = y_offset + clip.y;
4846       background_area.height = max_height;
4847
4848       flags = 0;
4849
4850       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4851         flags |= GTK_CELL_RENDERER_PRELIT;
4852
4853       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4854         flags |= GTK_CELL_RENDERER_SELECTED;
4855
4856       /* we *need* to set cell data on all cells before the call
4857        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4858        * return a correct value.
4859        */
4860       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4861            list;
4862            list = (rtl ? list->prev : list->next))
4863         {
4864           GtkTreeViewColumn *column = list->data;
4865           gtk_tree_view_column_cell_set_cell_data (column,
4866                                                    tree_view->priv->model,
4867                                                    &iter,
4868                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4869                                                    node->children?TRUE:FALSE);
4870         }
4871
4872       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4873
4874       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4875            list;
4876            list = (rtl ? list->prev : list->next))
4877         {
4878           GtkTreeViewColumn *column = list->data;
4879           GtkRegionFlags row_flags = 0, column_flags = 0;
4880           GtkStateFlags state = 0;
4881           gint width;
4882           gboolean draw_focus;
4883
4884           if (!gtk_tree_view_column_get_visible (column))
4885             continue;
4886
4887           n_col++;
4888           width = gtk_tree_view_column_get_width (column);
4889
4890           if (cell_offset > clip.x + clip.width ||
4891               cell_offset + width < clip.x)
4892             {
4893               cell_offset += width;
4894               continue;
4895             }
4896
4897           if (gtk_tree_view_column_get_sort_indicator (column))
4898             flags |= GTK_CELL_RENDERER_SORTED;
4899           else
4900             flags &= ~GTK_CELL_RENDERER_SORTED;
4901
4902           if (tree_view->priv->cursor_node == node)
4903             flags |= GTK_CELL_RENDERER_FOCUSED;
4904           else
4905             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4906
4907           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
4908             flags |= GTK_CELL_RENDERER_EXPANDABLE;
4909           else
4910             flags &= ~GTK_CELL_RENDERER_EXPANDABLE;
4911
4912           if (node->children)
4913             flags |= GTK_CELL_RENDERER_EXPANDED;
4914           else
4915             flags &= ~GTK_CELL_RENDERER_EXPANDED;
4916
4917           background_area.x = cell_offset;
4918           background_area.width = width;
4919
4920           cell_area = background_area;
4921           cell_area.y += vertical_separator / 2;
4922           cell_area.x += horizontal_separator / 2;
4923           cell_area.height -= vertical_separator;
4924           cell_area.width -= horizontal_separator;
4925
4926           if (draw_vgrid_lines)
4927             {
4928               if (list == first_column)
4929                 {
4930                   cell_area.width -= grid_line_width / 2;
4931                 }
4932               else if (list == last_column)
4933                 {
4934                   cell_area.x += grid_line_width / 2;
4935                   cell_area.width -= grid_line_width / 2;
4936                 }
4937               else
4938                 {
4939                   cell_area.x += grid_line_width / 2;
4940                   cell_area.width -= grid_line_width;
4941                 }
4942             }
4943
4944           if (draw_hgrid_lines)
4945             {
4946               cell_area.y += grid_line_width / 2;
4947               cell_area.height -= grid_line_width;
4948             }
4949
4950           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4951             {
4952               cell_offset += gtk_tree_view_column_get_width (column);
4953               continue;
4954             }
4955
4956           gtk_tree_view_column_cell_set_cell_data (column,
4957                                                    tree_view->priv->model,
4958                                                    &iter,
4959                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4960                                                    node->children?TRUE:FALSE);
4961
4962           /* Select the detail for drawing the cell.  relevant
4963            * factors are parity, sortedness, and whether to
4964            * display rules.
4965            */
4966           if (allow_rules && tree_view->priv->has_rules)
4967             {
4968               if (parity)
4969                 row_flags |= GTK_REGION_ODD;
4970               else
4971                 row_flags |= GTK_REGION_EVEN;
4972             }
4973
4974           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4975               n_visible_columns >= 3)
4976             column_flags |= GTK_REGION_SORTED;
4977
4978           is_first = (rtl ? !list->next : !list->prev);
4979           is_last = (rtl ? !list->prev : !list->next);
4980
4981           if (is_first)
4982             column_flags |= GTK_REGION_FIRST;
4983
4984           if (is_last)
4985             column_flags |= GTK_REGION_LAST;
4986
4987           if ((n_col % 2) == 0)
4988             column_flags |= GTK_REGION_EVEN;
4989           else
4990             column_flags |= GTK_REGION_ODD;
4991
4992           gtk_style_context_save (context);
4993
4994           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4995           gtk_style_context_set_state (context, state);
4996
4997           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4998           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4999           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
5000
5001           if (node == tree_view->priv->cursor_node && has_can_focus_cell
5002               && ((column == tree_view->priv->focus_column
5003                    && tree_view->priv->draw_keyfocus &&
5004                    gtk_widget_has_visible_focus (widget))
5005                   || (column == tree_view->priv->edited_column)))
5006             draw_focus = TRUE;
5007           else
5008             draw_focus = FALSE;
5009
5010           /* Draw background */
5011           gtk_render_background (context, cr,
5012                                  background_area.x,
5013                                  background_area.y,
5014                                  background_area.width,
5015                                  background_area.height);
5016
5017           /* Draw frame */
5018           gtk_render_frame (context, cr,
5019                             background_area.x,
5020                             background_area.y,
5021                             background_area.width,
5022                             background_area.height);
5023
5024           if (gtk_tree_view_is_expander_column (tree_view, column))
5025             {
5026               if (!rtl)
5027                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5028               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5029
5030               if (gtk_tree_view_draw_expanders (tree_view))
5031                 {
5032                   int expander_size = gtk_tree_view_get_expander_size (tree_view);
5033                   if (!rtl)
5034                     cell_area.x += depth * expander_size;
5035                   cell_area.width -= depth * expander_size;
5036                 }
5037
5038               /* If we have an expander column, the highlight underline
5039                * starts with that column, so that it indicates which
5040                * level of the tree we're dropping at.
5041                */
5042               highlight_x = cell_area.x;
5043               expander_cell_width = cell_area.width;
5044
5045               if (is_separator)
5046                 {
5047                   gtk_style_context_save (context);
5048                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5049
5050                   gtk_render_line (context, cr,
5051                                    cell_area.x,
5052                                    cell_area.y + cell_area.height / 2,
5053                                    cell_area.x + cell_area.width,
5054                                    cell_area.y + cell_area.height / 2);
5055
5056                   gtk_style_context_restore (context);
5057                 }
5058               else
5059                 {
5060                   _gtk_tree_view_column_cell_render (column,
5061                                                      cr,
5062                                                      &background_area,
5063                                                      &cell_area,
5064                                                      flags,
5065                                                      draw_focus);
5066                 }
5067
5068               if (gtk_tree_view_draw_expanders (tree_view)
5069                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5070                 {
5071                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5072                                             cr,
5073                                             tree,
5074                                             node);
5075                 }
5076             }
5077           else
5078             {
5079               if (is_separator)
5080                 {
5081                   gtk_style_context_save (context);
5082                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5083
5084                   gtk_render_line (context, cr,
5085                                    cell_area.x,
5086                                    cell_area.y + cell_area.height / 2,
5087                                    cell_area.x + cell_area.width,
5088                                    cell_area.y + cell_area.height / 2);
5089
5090                   gtk_style_context_restore (context);
5091                 }
5092               else
5093                 _gtk_tree_view_column_cell_render (column,
5094                                                    cr,
5095                                                    &background_area,
5096                                                    &cell_area,
5097                                                    flags,
5098                                                    draw_focus);
5099             }
5100
5101           if (draw_hgrid_lines)
5102             {
5103               if (background_area.y > 0)
5104                 gtk_tree_view_draw_line (tree_view, cr,
5105                                          GTK_TREE_VIEW_GRID_LINE,
5106                                          background_area.x, background_area.y,
5107                                          background_area.x + background_area.width,
5108                                          background_area.y);
5109
5110               if (y_offset + max_height >= clip.height)
5111                 gtk_tree_view_draw_line (tree_view, cr,
5112                                          GTK_TREE_VIEW_GRID_LINE,
5113                                          background_area.x, background_area.y + max_height,
5114                                          background_area.x + background_area.width,
5115                                          background_area.y + max_height);
5116             }
5117
5118           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5119               tree_view->priv->tree_lines_enabled)
5120             {
5121               gint x = background_area.x;
5122               gint mult = rtl ? -1 : 1;
5123               gint y0 = background_area.y;
5124               gint y1 = background_area.y + background_area.height/2;
5125               gint y2 = background_area.y + background_area.height;
5126
5127               if (rtl)
5128                 x += background_area.width - 1;
5129
5130               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5131                   && depth > 1)
5132                 {
5133                   gtk_tree_view_draw_line (tree_view, cr,
5134                                            GTK_TREE_VIEW_TREE_LINE,
5135                                            x + expander_size * (depth - 1.5) * mult,
5136                                            y1,
5137                                            x + expander_size * (depth - 1.1) * mult,
5138                                            y1);
5139                 }
5140               else if (depth > 1)
5141                 {
5142                   gtk_tree_view_draw_line (tree_view, cr,
5143                                            GTK_TREE_VIEW_TREE_LINE,
5144                                            x + expander_size * (depth - 1.5) * mult,
5145                                            y1,
5146                                            x + expander_size * (depth - 0.5) * mult,
5147                                            y1);
5148                 }
5149
5150               if (depth > 1)
5151                 {
5152                   gint i;
5153                   GtkRBNode *tmp_node;
5154                   GtkRBTree *tmp_tree;
5155
5156                   if (!_gtk_rbtree_next (tree, node))
5157                     gtk_tree_view_draw_line (tree_view, cr,
5158                                              GTK_TREE_VIEW_TREE_LINE,
5159                                              x + expander_size * (depth - 1.5) * mult,
5160                                              y0,
5161                                              x + expander_size * (depth - 1.5) * mult,
5162                                              y1);
5163                   else
5164                     gtk_tree_view_draw_line (tree_view, cr,
5165                                              GTK_TREE_VIEW_TREE_LINE,
5166                                              x + expander_size * (depth - 1.5) * mult,
5167                                              y0,
5168                                              x + expander_size * (depth - 1.5) * mult,
5169                                              y2);
5170
5171                   tmp_node = tree->parent_node;
5172                   tmp_tree = tree->parent_tree;
5173
5174                   for (i = depth - 2; i > 0; i--)
5175                     {
5176                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5177                         gtk_tree_view_draw_line (tree_view, cr,
5178                                                  GTK_TREE_VIEW_TREE_LINE,
5179                                                  x + expander_size * (i - 0.5) * mult,
5180                                                  y0,
5181                                                  x + expander_size * (i - 0.5) * mult,
5182                                                  y2);
5183
5184                       tmp_node = tmp_tree->parent_node;
5185                       tmp_tree = tmp_tree->parent_tree;
5186                     }
5187                 }
5188             }
5189
5190           gtk_style_context_restore (context);
5191           cell_offset += gtk_tree_view_column_get_width (column);
5192         }
5193
5194       if (node == drag_highlight)
5195         {
5196           /* Draw indicator for the drop
5197            */
5198           gint highlight_y = -1;
5199           GtkRBTree *tree = NULL;
5200           GtkRBNode *node = NULL;
5201
5202           gtk_style_context_save (context);
5203           gtk_style_context_add_class (context, GTK_STYLE_CLASS_DND);
5204
5205           switch (tree_view->priv->drag_dest_pos)
5206             {
5207             case GTK_TREE_VIEW_DROP_BEFORE:
5208               highlight_y = background_area.y - 1;
5209               if (highlight_y < 0)
5210                       highlight_y = 0;
5211               break;
5212
5213             case GTK_TREE_VIEW_DROP_AFTER:
5214               highlight_y = background_area.y + background_area.height - 1;
5215               break;
5216
5217             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5218             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5219               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5220
5221               if (tree == NULL)
5222                 break;
5223
5224               gtk_render_frame (context, cr,
5225                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node),
5226                                 gdk_window_get_width (tree_view->priv->bin_window),
5227                                 gtk_tree_view_get_row_height (tree_view, node));
5228               break;
5229             }
5230
5231           if (highlight_y >= 0)
5232             {
5233               gtk_tree_view_draw_line (tree_view, cr,
5234                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5235                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5236                                        highlight_y,
5237                                        rtl ? 0 : bin_window_width,
5238                                        highlight_y);
5239             }
5240
5241           gtk_style_context_restore (context);
5242         }
5243
5244       /* draw the big row-spanning focus rectangle, if needed */
5245       if (!has_can_focus_cell && node == tree_view->priv->cursor_node &&
5246           tree_view->priv->draw_keyfocus &&
5247           gtk_widget_has_visible_focus (widget))
5248         {
5249           gint tmp_y, tmp_height;
5250           GtkStateFlags focus_rect_state = 0;
5251
5252           gtk_style_context_save (context);
5253
5254           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5255           gtk_style_context_set_state (context, focus_rect_state);
5256
5257           if (draw_hgrid_lines)
5258             {
5259               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5260               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5261             }
5262           else
5263             {
5264               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5265               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5266             }
5267
5268           gtk_render_focus (context, cr,
5269                             0, tmp_y,
5270                             gdk_window_get_width (tree_view->priv->bin_window),
5271                             tmp_height);
5272
5273           gtk_style_context_restore (context);
5274         }
5275
5276       y_offset += max_height;
5277       if (node->children)
5278         {
5279           GtkTreeIter parent = iter;
5280           gboolean has_child;
5281
5282           tree = node->children;
5283           node = _gtk_rbtree_first (tree);
5284
5285           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5286                                                     &iter,
5287                                                     &parent);
5288           depth++;
5289
5290           /* Sanity Check! */
5291           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5292         }
5293       else
5294         {
5295           gboolean done = FALSE;
5296
5297           do
5298             {
5299               node = _gtk_rbtree_next (tree, node);
5300               if (node != NULL)
5301                 {
5302                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5303                   done = TRUE;
5304
5305                   /* Sanity Check! */
5306                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5307                 }
5308               else
5309                 {
5310                   GtkTreeIter parent_iter = iter;
5311                   gboolean has_parent;
5312
5313                   node = tree->parent_node;
5314                   tree = tree->parent_tree;
5315                   if (tree == NULL)
5316                     /* we should go to done to free some memory */
5317                     goto done;
5318                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5319                                                            &iter,
5320                                                            &parent_iter);
5321                   depth--;
5322
5323                   /* Sanity check */
5324                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5325                 }
5326             }
5327           while (!done);
5328         }
5329     }
5330   while (y_offset < clip.height);
5331
5332 done:
5333   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5334
5335   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5336     gtk_tree_view_paint_rubber_band (tree_view, cr);
5337
5338   if (drag_dest_path)
5339     gtk_tree_path_free (drag_dest_path);
5340
5341   return FALSE;
5342 }
5343
5344 static gboolean
5345 gtk_tree_view_draw (GtkWidget *widget,
5346                     cairo_t   *cr)
5347 {
5348   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5349   GtkWidget   *button;
5350
5351   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5352     {
5353       GtkStyleContext *context;
5354       GList *tmp_list;
5355
5356       context = gtk_widget_get_style_context (widget);
5357
5358       cairo_save (cr);
5359
5360       gtk_style_context_save (context);
5361       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5362
5363       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5364
5365       gtk_tree_view_bin_draw (widget, cr);
5366
5367       gtk_style_context_restore (context);
5368       cairo_restore (cr);
5369
5370       /* We can't just chain up to Container::draw as it will try to send the
5371        * event to the headers, so we handle propagating it to our children
5372        * (eg. widgets being edited) ourselves.
5373        */
5374       tmp_list = tree_view->priv->children;
5375       while (tmp_list)
5376         {
5377           GtkTreeViewChild *child = tmp_list->data;
5378           tmp_list = tmp_list->next;
5379
5380           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5381         }
5382     }
5383
5384   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5385     {
5386       GList *list;
5387
5388       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5389         {
5390           GtkTreeViewColumn *column = list->data;
5391
5392           if (column == tree_view->priv->drag_column)
5393             continue;
5394
5395           if (gtk_tree_view_column_get_visible (column))
5396             {
5397               button = gtk_tree_view_column_get_button (column);
5398               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5399                                             button, cr);
5400             }
5401         }
5402     }
5403
5404   if (tree_view->priv->drag_window &&
5405       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5406     {
5407       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5408       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5409                                     button, cr);
5410     }
5411
5412   return FALSE;
5413 }
5414
5415 enum
5416 {
5417   DROP_HOME,
5418   DROP_RIGHT,
5419   DROP_LEFT,
5420   DROP_END
5421 };
5422
5423 /* returns 0x1 when no column has been found -- yes it's hackish */
5424 static GtkTreeViewColumn *
5425 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5426                                GtkTreeViewColumn *column,
5427                                gint               drop_position)
5428 {
5429   GtkTreeViewColumn *left_column = NULL;
5430   GtkTreeViewColumn *cur_column = NULL;
5431   GList *tmp_list;
5432
5433   if (!gtk_tree_view_column_get_reorderable (column))
5434     return (GtkTreeViewColumn *)0x1;
5435
5436   switch (drop_position)
5437     {
5438       case DROP_HOME:
5439         /* find first column where we can drop */
5440         tmp_list = tree_view->priv->columns;
5441         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5442           return (GtkTreeViewColumn *)0x1;
5443
5444         while (tmp_list)
5445           {
5446             g_assert (tmp_list);
5447
5448             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5449             tmp_list = tmp_list->next;
5450
5451             if (left_column &&
5452                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5453               continue;
5454
5455             if (!tree_view->priv->column_drop_func)
5456               return left_column;
5457
5458             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5459               {
5460                 left_column = cur_column;
5461                 continue;
5462               }
5463
5464             return left_column;
5465           }
5466
5467         if (!tree_view->priv->column_drop_func)
5468           return left_column;
5469
5470         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5471           return left_column;
5472         else
5473           return (GtkTreeViewColumn *)0x1;
5474         break;
5475
5476       case DROP_RIGHT:
5477         /* find first column after column where we can drop */
5478         tmp_list = tree_view->priv->columns;
5479
5480         for (; tmp_list; tmp_list = tmp_list->next)
5481           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5482             break;
5483
5484         if (!tmp_list || !tmp_list->next)
5485           return (GtkTreeViewColumn *)0x1;
5486
5487         tmp_list = tmp_list->next;
5488         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5489         tmp_list = tmp_list->next;
5490
5491         while (tmp_list)
5492           {
5493             g_assert (tmp_list);
5494
5495             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5496             tmp_list = tmp_list->next;
5497
5498             if (left_column &&
5499                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5500               {
5501                 left_column = cur_column;
5502                 if (tmp_list)
5503                   tmp_list = tmp_list->next;
5504                 continue;
5505               }
5506
5507             if (!tree_view->priv->column_drop_func)
5508               return left_column;
5509
5510             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5511               {
5512                 left_column = cur_column;
5513                 continue;
5514               }
5515
5516             return left_column;
5517           }
5518
5519         if (!tree_view->priv->column_drop_func)
5520           return left_column;
5521
5522         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5523           return left_column;
5524         else
5525           return (GtkTreeViewColumn *)0x1;
5526         break;
5527
5528       case DROP_LEFT:
5529         /* find first column before column where we can drop */
5530         tmp_list = tree_view->priv->columns;
5531
5532         for (; tmp_list; tmp_list = tmp_list->next)
5533           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5534             break;
5535
5536         if (!tmp_list || !tmp_list->prev)
5537           return (GtkTreeViewColumn *)0x1;
5538
5539         tmp_list = tmp_list->prev;
5540         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5541         tmp_list = tmp_list->prev;
5542
5543         while (tmp_list)
5544           {
5545             g_assert (tmp_list);
5546
5547             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5548
5549             if (left_column &&
5550                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5551               {
5552                 /*if (!tmp_list->prev)
5553                   return (GtkTreeViewColumn *)0x1;
5554                   */
5555 /*
5556                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5557                 tmp_list = tmp_list->prev->prev;
5558                 continue;*/
5559
5560                 cur_column = left_column;
5561                 if (tmp_list)
5562                   tmp_list = tmp_list->prev;
5563                 continue;
5564               }
5565
5566             if (!tree_view->priv->column_drop_func)
5567               return left_column;
5568
5569             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5570               return left_column;
5571
5572             cur_column = left_column;
5573             tmp_list = tmp_list->prev;
5574           }
5575
5576         if (!tree_view->priv->column_drop_func)
5577           return NULL;
5578
5579         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5580           return NULL;
5581         else
5582           return (GtkTreeViewColumn *)0x1;
5583         break;
5584
5585       case DROP_END:
5586         /* same as DROP_HOME case, but doing it backwards */
5587         tmp_list = g_list_last (tree_view->priv->columns);
5588         cur_column = NULL;
5589
5590         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5591           return (GtkTreeViewColumn *)0x1;
5592
5593         while (tmp_list)
5594           {
5595             g_assert (tmp_list);
5596
5597             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5598
5599             if (left_column &&
5600                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5601               {
5602                 cur_column = left_column;
5603                 tmp_list = tmp_list->prev;
5604               }
5605
5606             if (!tree_view->priv->column_drop_func)
5607               return left_column;
5608
5609             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5610               return left_column;
5611
5612             cur_column = left_column;
5613             tmp_list = tmp_list->prev;
5614           }
5615
5616         if (!tree_view->priv->column_drop_func)
5617           return NULL;
5618
5619         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5620           return NULL;
5621         else
5622           return (GtkTreeViewColumn *)0x1;
5623         break;
5624     }
5625
5626   return (GtkTreeViewColumn *)0x1;
5627 }
5628
5629 static gboolean
5630 gtk_tree_view_key_press (GtkWidget   *widget,
5631                          GdkEventKey *event)
5632 {
5633   GtkTreeView *tree_view = (GtkTreeView *) widget;
5634   GtkWidget   *button;
5635
5636   if (tree_view->priv->rubber_band_status)
5637     {
5638       if (event->keyval == GDK_KEY_Escape)
5639         gtk_tree_view_stop_rubber_band (tree_view);
5640
5641       return TRUE;
5642     }
5643
5644   if (tree_view->priv->in_column_drag)
5645     {
5646       if (event->keyval == GDK_KEY_Escape)
5647         {
5648           tree_view->priv->cur_reorder = NULL;
5649           gtk_tree_view_button_release_drag_column (widget, NULL);
5650         }
5651       return TRUE;
5652     }
5653
5654   if (tree_view->priv->headers_visible)
5655     {
5656       GList *focus_column;
5657       gboolean rtl;
5658
5659       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5660
5661       for (focus_column = tree_view->priv->columns;
5662            focus_column;
5663            focus_column = focus_column->next)
5664         {
5665           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5666
5667           button = gtk_tree_view_column_get_button (column);
5668           if (gtk_widget_has_focus (button))
5669             break;
5670         }
5671
5672       if (focus_column &&
5673           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5674           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5675            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5676         {
5677           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5678           gint max_width, min_width;
5679
5680           if (!gtk_tree_view_column_get_resizable (column))
5681             {
5682               gtk_widget_error_bell (widget);
5683               return TRUE;
5684             }
5685
5686           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5687               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5688             {
5689               GtkRequisition button_req;
5690               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5691               gint new_width;
5692
5693               button = gtk_tree_view_column_get_button (column);
5694
5695               gtk_widget_get_preferred_size (button, &button_req, NULL);
5696
5697               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5698               new_width -= 2;
5699               if (new_width < 0)
5700                 new_width = 0;
5701
5702               _gtk_tree_view_column_set_resized_width (column, new_width);
5703
5704               min_width = gtk_tree_view_column_get_min_width (column);
5705               if (min_width == -1)
5706                 new_width = MAX (button_req.width, new_width);
5707               else
5708                 {
5709                   new_width = MAX (min_width, new_width);
5710                 }
5711
5712               max_width = gtk_tree_view_column_get_max_width (column);
5713               if (max_width != -1)
5714                 new_width = MIN (new_width, max_width);
5715
5716               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5717
5718               if (new_width != old_width)
5719                 {
5720                   _gtk_tree_view_column_set_resized_width (column, new_width);
5721                   gtk_widget_queue_resize (widget);
5722                 }
5723               else
5724                 gtk_widget_error_bell (widget);
5725             }
5726           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5727                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5728             {
5729               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5730               gint new_width;
5731
5732               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5733               new_width += 2;
5734
5735               max_width = gtk_tree_view_column_get_max_width (column);
5736               if (max_width != -1)
5737                 new_width = MIN (new_width, max_width);
5738
5739               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5740
5741               if (new_width != old_width)
5742                 {
5743                   _gtk_tree_view_column_set_resized_width (column, new_width);
5744                   gtk_widget_queue_resize (widget);
5745                 }
5746               else
5747                 gtk_widget_error_bell (widget);
5748             }
5749
5750           return TRUE;
5751         }
5752
5753       if (focus_column &&
5754           (event->state & GDK_MOD1_MASK) &&
5755           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5756            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5757            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5758            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5759         {
5760           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5761
5762           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5763               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5764             {
5765               GtkTreeViewColumn *col;
5766               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5767               if (col != (GtkTreeViewColumn *)0x1)
5768                 gtk_tree_view_move_column_after (tree_view, column, col);
5769               else
5770                 gtk_widget_error_bell (widget);
5771             }
5772           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5773                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5774             {
5775               GtkTreeViewColumn *col;
5776               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5777               if (col != (GtkTreeViewColumn *)0x1)
5778                 gtk_tree_view_move_column_after (tree_view, column, col);
5779               else
5780                 gtk_widget_error_bell (widget);
5781             }
5782           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5783             {
5784               GtkTreeViewColumn *col;
5785               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5786               if (col != (GtkTreeViewColumn *)0x1)
5787                 gtk_tree_view_move_column_after (tree_view, column, col);
5788               else
5789                 gtk_widget_error_bell (widget);
5790             }
5791           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5792             {
5793               GtkTreeViewColumn *col;
5794               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5795               if (col != (GtkTreeViewColumn *)0x1)
5796                 gtk_tree_view_move_column_after (tree_view, column, col);
5797               else
5798                 gtk_widget_error_bell (widget);
5799             }
5800
5801           return TRUE;
5802         }
5803     }
5804
5805   /* Chain up to the parent class.  It handles the keybindings. */
5806   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5807     return TRUE;
5808
5809   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5810     {
5811       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5812       return FALSE;
5813     }
5814
5815   /* We pass the event to the search_entry.  If its text changes, then we start
5816    * the typeahead find capabilities. */
5817   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5818       && tree_view->priv->enable_search
5819       && !tree_view->priv->search_custom_entry_set)
5820     {
5821       GdkEvent *new_event;
5822       char *old_text;
5823       const char *new_text;
5824       gboolean retval;
5825       GdkScreen *screen;
5826       gboolean text_modified;
5827       gulong popup_menu_id;
5828
5829       gtk_tree_view_ensure_interactive_directory (tree_view);
5830
5831       /* Make a copy of the current text */
5832       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5833       new_event = gdk_event_copy ((GdkEvent *) event);
5834       g_object_unref (((GdkEventKey *) new_event)->window);
5835       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5836       gtk_widget_realize (tree_view->priv->search_window);
5837
5838       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5839                                         "popup-menu", G_CALLBACK (gtk_true),
5840                                         NULL);
5841
5842       /* Move the entry off screen */
5843       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5844       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5845                        gdk_screen_get_width (screen) + 1,
5846                        gdk_screen_get_height (screen) + 1);
5847       gtk_widget_show (tree_view->priv->search_window);
5848
5849       /* Send the event to the window.  If the preedit_changed signal is emitted
5850        * during this event, we will set priv->imcontext_changed  */
5851       tree_view->priv->imcontext_changed = FALSE;
5852       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5853       gdk_event_free (new_event);
5854       gtk_widget_hide (tree_view->priv->search_window);
5855
5856       g_signal_handler_disconnect (tree_view->priv->search_entry,
5857                                    popup_menu_id);
5858
5859       /* We check to make sure that the entry tried to handle the text, and that
5860        * the text has changed.
5861        */
5862       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5863       text_modified = strcmp (old_text, new_text) != 0;
5864       g_free (old_text);
5865       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5866           (retval && text_modified))               /* ...or the text was modified */
5867         {
5868           if (gtk_tree_view_real_start_interactive_search (tree_view,
5869                                                            gdk_event_get_device ((GdkEvent *) event),
5870                                                            FALSE))
5871             {
5872               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5873               return TRUE;
5874             }
5875           else
5876             {
5877               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5878               return FALSE;
5879             }
5880         }
5881     }
5882
5883   return FALSE;
5884 }
5885
5886 static gboolean
5887 gtk_tree_view_key_release (GtkWidget   *widget,
5888                            GdkEventKey *event)
5889 {
5890   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5891
5892   if (tree_view->priv->rubber_band_status)
5893     return TRUE;
5894
5895   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5896 }
5897
5898 /* FIXME Is this function necessary? Can I get an enter_notify event
5899  * w/o either an expose event or a mouse motion event?
5900  */
5901 static gboolean
5902 gtk_tree_view_enter_notify (GtkWidget        *widget,
5903                             GdkEventCrossing *event)
5904 {
5905   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5906   GtkRBTree *tree;
5907   GtkRBNode *node;
5908   gint new_y;
5909
5910   /* Sanity check it */
5911   if (event->window != tree_view->priv->bin_window)
5912     return FALSE;
5913
5914   if (tree_view->priv->tree == NULL)
5915     return FALSE;
5916
5917   if (event->mode == GDK_CROSSING_GRAB ||
5918       event->mode == GDK_CROSSING_GTK_GRAB ||
5919       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5920       event->mode == GDK_CROSSING_STATE_CHANGED)
5921     return TRUE;
5922
5923   /* find the node internally */
5924   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5925   if (new_y < 0)
5926     new_y = 0;
5927   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5928
5929   tree_view->priv->event_last_x = event->x;
5930   tree_view->priv->event_last_y = event->y;
5931
5932   if ((tree_view->priv->button_pressed_node == NULL) ||
5933       (tree_view->priv->button_pressed_node == node))
5934     prelight_or_select (tree_view, tree, node, event->x, event->y);
5935
5936   return TRUE;
5937 }
5938
5939 static gboolean
5940 gtk_tree_view_leave_notify (GtkWidget        *widget,
5941                             GdkEventCrossing *event)
5942 {
5943   GtkTreeView *tree_view;
5944
5945   if (event->mode == GDK_CROSSING_GRAB ||
5946       event->mode == GDK_CROSSING_GTK_GRAB ||
5947       event->mode == GDK_CROSSING_GTK_UNGRAB)
5948     return TRUE;
5949
5950   tree_view = GTK_TREE_VIEW (widget);
5951
5952   if (tree_view->priv->prelight_node)
5953     _gtk_tree_view_queue_draw_node (tree_view,
5954                                    tree_view->priv->prelight_tree,
5955                                    tree_view->priv->prelight_node,
5956                                    NULL);
5957
5958   tree_view->priv->event_last_x = -10000;
5959   tree_view->priv->event_last_y = -10000;
5960
5961   prelight_or_select (tree_view,
5962                       NULL, NULL,
5963                       -1000, -1000); /* coords not possibly over an arrow */
5964
5965   return TRUE;
5966 }
5967
5968
5969 static gint
5970 gtk_tree_view_focus_out (GtkWidget     *widget,
5971                          GdkEventFocus *event)
5972 {
5973   GtkTreeView *tree_view;
5974
5975   tree_view = GTK_TREE_VIEW (widget);
5976
5977   gtk_widget_queue_draw (widget);
5978
5979   /* destroy interactive search dialog */
5980   if (tree_view->priv->search_window)
5981     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5982                                       gdk_event_get_device ((GdkEvent *) event));
5983
5984   return FALSE;
5985 }
5986
5987
5988 /* Incremental Reflow
5989  */
5990
5991 static void
5992 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5993                                  GtkRBTree   *tree,
5994                                  GtkRBNode   *node)
5995 {
5996   GtkAllocation allocation;
5997   gint y;
5998
5999   y = _gtk_rbtree_node_find_offset (tree, node)
6000     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
6001     + gtk_tree_view_get_effective_header_height (tree_view);
6002
6003   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6004   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
6005                               0, y,
6006                               allocation.width,
6007                               GTK_RBNODE_GET_HEIGHT (node));
6008 }
6009
6010 static gboolean
6011 node_is_visible (GtkTreeView *tree_view,
6012                  GtkRBTree   *tree,
6013                  GtkRBNode   *node)
6014 {
6015   int y;
6016   int height;
6017
6018   y = _gtk_rbtree_node_find_offset (tree, node);
6019   height = gtk_tree_view_get_row_height (tree_view, node);
6020
6021   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6022       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6023                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6024     return TRUE;
6025
6026   return FALSE;
6027 }
6028
6029 /* Returns TRUE if it updated the size
6030  */
6031 static gboolean
6032 validate_row (GtkTreeView *tree_view,
6033               GtkRBTree   *tree,
6034               GtkRBNode   *node,
6035               GtkTreeIter *iter,
6036               GtkTreePath *path)
6037 {
6038   GtkTreeViewColumn *column;
6039   GList *list, *first_column, *last_column;
6040   gint height = 0;
6041   gint horizontal_separator;
6042   gint vertical_separator;
6043   gint depth = gtk_tree_path_get_depth (path);
6044   gboolean retval = FALSE;
6045   gboolean is_separator = FALSE;
6046   gboolean draw_vgrid_lines, draw_hgrid_lines;
6047   gint focus_pad;
6048   gint grid_line_width;
6049   gboolean wide_separators;
6050   gint separator_height;
6051   gint expander_size;
6052
6053   /* double check the row needs validating */
6054   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6055       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6056     return FALSE;
6057
6058   is_separator = row_is_separator (tree_view, iter, NULL);
6059
6060   gtk_widget_style_get (GTK_WIDGET (tree_view),
6061                         "focus-padding", &focus_pad,
6062                         "horizontal-separator", &horizontal_separator,
6063                         "vertical-separator", &vertical_separator,
6064                         "grid-line-width", &grid_line_width,
6065                         "wide-separators",  &wide_separators,
6066                         "separator-height", &separator_height,
6067                         NULL);
6068
6069   draw_vgrid_lines =
6070     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6071     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6072   draw_hgrid_lines =
6073     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6074     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6075   expander_size = gtk_tree_view_get_expander_size (tree_view);
6076
6077   for (last_column = g_list_last (tree_view->priv->columns);
6078        last_column &&
6079        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6080        last_column = last_column->prev)
6081     ;
6082
6083   for (first_column = g_list_first (tree_view->priv->columns);
6084        first_column &&
6085        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6086        first_column = first_column->next)
6087     ;
6088
6089   for (list = tree_view->priv->columns; list; list = list->next)
6090     {
6091       gint padding = 0;
6092       gint original_width;
6093       gint new_width;
6094       gint row_height;
6095
6096       column = list->data;
6097
6098       if (!gtk_tree_view_column_get_visible (column))
6099         continue;
6100
6101       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6102           !_gtk_tree_view_column_cell_get_dirty (column))
6103         continue;
6104
6105       original_width = _gtk_tree_view_column_get_requested_width (column);
6106
6107       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6108                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6109                                                node->children?TRUE:FALSE);
6110       gtk_tree_view_column_cell_get_size (column,
6111                                           NULL, NULL, NULL,
6112                                           NULL, &row_height);
6113
6114       if (!is_separator)
6115         {
6116           row_height += vertical_separator;
6117           height = MAX (height, row_height);
6118           height = MAX (height, expander_size);
6119         }
6120       else
6121         {
6122           if (wide_separators)
6123             height = separator_height + 2 * focus_pad;
6124           else
6125             height = 2 + 2 * focus_pad;
6126         }
6127
6128       if (gtk_tree_view_is_expander_column (tree_view, column))
6129         {
6130           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6131
6132           if (gtk_tree_view_draw_expanders (tree_view))
6133             padding += depth * expander_size;
6134         }
6135       else
6136         padding += horizontal_separator;
6137
6138       if (draw_vgrid_lines)
6139         {
6140           if (list->data == first_column || list->data == last_column)
6141             padding += grid_line_width / 2.0;
6142           else
6143             padding += grid_line_width;
6144         }
6145
6146       /* Update the padding for the column */
6147       _gtk_tree_view_column_push_padding (column, padding);
6148       new_width = _gtk_tree_view_column_get_requested_width (column);
6149
6150       if (new_width > original_width)
6151         retval = TRUE;
6152     }
6153
6154   if (draw_hgrid_lines)
6155     height += grid_line_width;
6156
6157   if (height != GTK_RBNODE_GET_HEIGHT (node))
6158     {
6159       retval = TRUE;
6160       _gtk_rbtree_node_set_height (tree, node, height);
6161     }
6162   _gtk_rbtree_node_mark_valid (tree, node);
6163   tree_view->priv->post_validation_flag = TRUE;
6164
6165   return retval;
6166 }
6167
6168
6169 static void
6170 validate_visible_area (GtkTreeView *tree_view)
6171 {
6172   GtkAllocation allocation;
6173   GtkTreePath *path = NULL;
6174   GtkTreePath *above_path = NULL;
6175   GtkTreeIter iter;
6176   GtkRBTree *tree = NULL;
6177   GtkRBNode *node = NULL;
6178   gboolean need_redraw = FALSE;
6179   gboolean size_changed = FALSE;
6180   gint total_height;
6181   gint area_above = 0;
6182   gint area_below = 0;
6183
6184   if (tree_view->priv->tree == NULL)
6185     return;
6186
6187   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6188       tree_view->priv->scroll_to_path == NULL)
6189     return;
6190
6191   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6192   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6193
6194   if (total_height == 0)
6195     return;
6196
6197   /* First, we check to see if we need to scroll anywhere
6198    */
6199   if (tree_view->priv->scroll_to_path)
6200     {
6201       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6202       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6203         {
6204           /* we are going to scroll, and will update dy */
6205           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6206           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6207               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6208             {
6209               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6210               if (validate_row (tree_view, tree, node, &iter, path))
6211                 size_changed = TRUE;
6212             }
6213
6214           if (tree_view->priv->scroll_to_use_align)
6215             {
6216               gint height = gtk_tree_view_get_row_height (tree_view, node);
6217               area_above = (total_height - height) *
6218                 tree_view->priv->scroll_to_row_align;
6219               area_below = total_height - area_above - height;
6220               area_above = MAX (area_above, 0);
6221               area_below = MAX (area_below, 0);
6222             }
6223           else
6224             {
6225               /* two cases:
6226                * 1) row not visible
6227                * 2) row visible
6228                */
6229               gint dy;
6230               gint height = gtk_tree_view_get_row_height (tree_view, node);
6231
6232               dy = _gtk_rbtree_node_find_offset (tree, node);
6233
6234               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6235                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6236                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6237                 {
6238                   /* row visible: keep the row at the same position */
6239                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6240                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6241                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6242                                - dy - height;
6243                 }
6244               else
6245                 {
6246                   /* row not visible */
6247                   if (dy >= 0
6248                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6249                     {
6250                       /* row at the beginning -- fixed */
6251                       area_above = dy;
6252                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6253                                    - area_above - height;
6254                     }
6255                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6256                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6257                     {
6258                       /* row at the end -- fixed */
6259                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6260                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6261                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6262                                    area_above - height;
6263
6264                       if (area_below < 0)
6265                         {
6266                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6267                           area_below = 0;
6268                         }
6269                     }
6270                   else
6271                     {
6272                       /* row somewhere in the middle, bring it to the top
6273                        * of the view
6274                        */
6275                       area_above = 0;
6276                       area_below = total_height - height;
6277                     }
6278                 }
6279             }
6280         }
6281       else
6282         /* the scroll to isn't valid; ignore it.
6283          */
6284         {
6285           if (tree_view->priv->scroll_to_path && !path)
6286             {
6287               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6288               tree_view->priv->scroll_to_path = NULL;
6289             }
6290           if (path)
6291             gtk_tree_path_free (path);
6292           path = NULL;
6293         }
6294     }
6295
6296   /* We didn't have a scroll_to set, so we just handle things normally
6297    */
6298   if (path == NULL)
6299     {
6300       gint offset;
6301
6302       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6303                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6304                                         &tree, &node);
6305       if (node == NULL)
6306         {
6307           /* In this case, nothing has been validated */
6308           path = gtk_tree_path_new_first ();
6309           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6310         }
6311       else
6312         {
6313           path = _gtk_tree_path_new_from_rbtree (tree, node);
6314           total_height += offset;
6315         }
6316
6317       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6318
6319       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6320           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6321         {
6322           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6323           if (validate_row (tree_view, tree, node, &iter, path))
6324             size_changed = TRUE;
6325         }
6326       area_above = 0;
6327       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6328     }
6329
6330   above_path = gtk_tree_path_copy (path);
6331
6332   /* if we do not validate any row above the new top_row, we will make sure
6333    * that the row immediately above top_row has been validated. (if we do not
6334    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6335    * when invalidated that row's height will be zero. and this will mess up
6336    * scrolling).
6337    */
6338   if (area_above == 0)
6339     {
6340       GtkRBTree *tmptree;
6341       GtkRBNode *tmpnode;
6342
6343       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6344       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6345
6346       if (tmpnode)
6347         {
6348           GtkTreePath *tmppath;
6349           GtkTreeIter tmpiter;
6350
6351           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6352           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6353
6354           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6355               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6356             {
6357               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6358               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6359                 size_changed = TRUE;
6360             }
6361
6362           gtk_tree_path_free (tmppath);
6363         }
6364     }
6365
6366   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6367    * backwards is much slower then forward, as there is no iter_prev function.
6368    * We go forwards first in case we run out of tree.  Then we go backwards to
6369    * fill out the top.
6370    */
6371   while (node && area_below > 0)
6372     {
6373       if (node->children)
6374         {
6375           GtkTreeIter parent = iter;
6376           gboolean has_child;
6377
6378           tree = node->children;
6379           node = _gtk_rbtree_first (tree);
6380
6381           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6382                                                     &iter,
6383                                                     &parent);
6384           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6385           gtk_tree_path_down (path);
6386         }
6387       else
6388         {
6389           gboolean done = FALSE;
6390           do
6391             {
6392               node = _gtk_rbtree_next (tree, node);
6393               if (node != NULL)
6394                 {
6395                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6396                   done = TRUE;
6397                   gtk_tree_path_next (path);
6398
6399                   /* Sanity Check! */
6400                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6401                 }
6402               else
6403                 {
6404                   GtkTreeIter parent_iter = iter;
6405                   gboolean has_parent;
6406
6407                   node = tree->parent_node;
6408                   tree = tree->parent_tree;
6409                   if (tree == NULL)
6410                     break;
6411                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6412                                                            &iter,
6413                                                            &parent_iter);
6414                   gtk_tree_path_up (path);
6415
6416                   /* Sanity check */
6417                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6418                 }
6419             }
6420           while (!done);
6421         }
6422
6423       if (!node)
6424         break;
6425
6426       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6427           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6428         {
6429           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6430           if (validate_row (tree_view, tree, node, &iter, path))
6431               size_changed = TRUE;
6432         }
6433
6434       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6435     }
6436   gtk_tree_path_free (path);
6437
6438   /* If we ran out of tree, and have extra area_below left, we need to add it
6439    * to area_above */
6440   if (area_below > 0)
6441     area_above += area_below;
6442
6443   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6444
6445   /* We walk backwards */
6446   while (area_above > 0)
6447     {
6448       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6449
6450       /* Always find the new path in the tree.  We cannot just assume
6451        * a gtk_tree_path_prev() is enough here, as there might be children
6452        * in between this node and the previous sibling node.  If this
6453        * appears to be a performance hotspot in profiles, we can look into
6454        * intrigate logic for keeping path, node and iter in sync like
6455        * we do for forward walks.  (Which will be hard because of the lacking
6456        * iter_prev).
6457        */
6458
6459       if (node == NULL)
6460         break;
6461
6462       gtk_tree_path_free (above_path);
6463       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6464
6465       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6466
6467       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6468           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6469         {
6470           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6471           if (validate_row (tree_view, tree, node, &iter, above_path))
6472             size_changed = TRUE;
6473         }
6474       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6475     }
6476
6477   /* if we scrolled to a path, we need to set the dy here,
6478    * and sync the top row accordingly
6479    */
6480   if (tree_view->priv->scroll_to_path)
6481     {
6482       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6483       gtk_tree_view_top_row_to_dy (tree_view);
6484
6485       need_redraw = TRUE;
6486     }
6487   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6488     {
6489       /* when we are not scrolling, we should never set dy to something
6490        * else than zero. we update top_row to be in sync with dy = 0.
6491        */
6492       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6493       gtk_tree_view_dy_to_top_row (tree_view);
6494     }
6495   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6496     {
6497       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6498       gtk_tree_view_dy_to_top_row (tree_view);
6499     }
6500   else
6501     gtk_tree_view_top_row_to_dy (tree_view);
6502
6503   /* update width/height and queue a resize */
6504   if (size_changed)
6505     {
6506       GtkRequisition requisition;
6507
6508       /* We temporarily guess a size, under the assumption that it will be the
6509        * same when we get our next size_allocate.  If we don't do this, we'll be
6510        * in an inconsistent state if we call top_row_to_dy. */
6511
6512       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6513                                      &requisition, NULL);
6514       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6515                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6516       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6517                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6518       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6519     }
6520
6521   if (tree_view->priv->scroll_to_path)
6522     {
6523       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6524       tree_view->priv->scroll_to_path = NULL;
6525     }
6526
6527   if (above_path)
6528     gtk_tree_path_free (above_path);
6529
6530   if (tree_view->priv->scroll_to_column)
6531     {
6532       tree_view->priv->scroll_to_column = NULL;
6533     }
6534   if (need_redraw)
6535     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6536 }
6537
6538 static void
6539 initialize_fixed_height_mode (GtkTreeView *tree_view)
6540 {
6541   if (!tree_view->priv->tree)
6542     return;
6543
6544   if (tree_view->priv->fixed_height < 0)
6545     {
6546       GtkTreeIter iter;
6547       GtkTreePath *path;
6548
6549       GtkRBTree *tree = NULL;
6550       GtkRBNode *node = NULL;
6551
6552       tree = tree_view->priv->tree;
6553       node = tree->root;
6554
6555       path = _gtk_tree_path_new_from_rbtree (tree, node);
6556       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6557
6558       validate_row (tree_view, tree, node, &iter, path);
6559
6560       gtk_tree_path_free (path);
6561
6562       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6563     }
6564
6565    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6566                                  tree_view->priv->fixed_height, TRUE);
6567 }
6568
6569 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6570  * the left-most uninvalidated node.  We then try walking right, validating
6571  * nodes.  Once we find a valid node, we repeat the previous process of finding
6572  * the first invalid node.
6573  */
6574
6575 static gboolean
6576 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6577 {
6578   GtkRBTree *tree = NULL;
6579   GtkRBNode *node = NULL;
6580   gboolean validated_area = FALSE;
6581   gint retval = TRUE;
6582   GtkTreePath *path = NULL;
6583   GtkTreeIter iter;
6584   GTimer *timer;
6585   gint i = 0;
6586
6587   gint y = -1;
6588   gint prev_height = -1;
6589   gboolean fixed_height = TRUE;
6590
6591   g_assert (tree_view);
6592
6593   if (tree_view->priv->tree == NULL)
6594       return FALSE;
6595
6596   if (tree_view->priv->fixed_height_mode)
6597     {
6598       if (tree_view->priv->fixed_height < 0)
6599         initialize_fixed_height_mode (tree_view);
6600
6601       return FALSE;
6602     }
6603
6604   timer = g_timer_new ();
6605   g_timer_start (timer);
6606
6607   do
6608     {
6609       gboolean changed = FALSE;
6610
6611       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6612         {
6613           retval = FALSE;
6614           goto done;
6615         }
6616
6617       if (path != NULL)
6618         {
6619           node = _gtk_rbtree_next (tree, node);
6620           if (node != NULL)
6621             {
6622               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6623               gtk_tree_path_next (path);
6624             }
6625           else
6626             {
6627               gtk_tree_path_free (path);
6628               path = NULL;
6629             }
6630         }
6631
6632       if (path == NULL)
6633         {
6634           tree = tree_view->priv->tree;
6635           node = tree_view->priv->tree->root;
6636
6637           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6638
6639           do
6640             {
6641               if (!_gtk_rbtree_is_nil (node->left) &&
6642                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6643                 {
6644                   node = node->left;
6645                 }
6646               else if (!_gtk_rbtree_is_nil (node->right) &&
6647                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6648                 {
6649                   node = node->right;
6650                 }
6651               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6652                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6653                 {
6654                   break;
6655                 }
6656               else if (node->children != NULL)
6657                 {
6658                   tree = node->children;
6659                   node = tree->root;
6660                 }
6661               else
6662                 /* RBTree corruption!  All bad */
6663                 g_assert_not_reached ();
6664             }
6665           while (TRUE);
6666           path = _gtk_tree_path_new_from_rbtree (tree, node);
6667           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6668         }
6669
6670       changed = validate_row (tree_view, tree, node, &iter, path);
6671       validated_area = changed || validated_area;
6672
6673       if (changed)
6674         {
6675           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6676
6677           if (y == -1 || y > offset)
6678             y = offset;
6679         }
6680
6681       if (!tree_view->priv->fixed_height_check)
6682         {
6683           gint height;
6684
6685           height = gtk_tree_view_get_row_height (tree_view, node);
6686           if (prev_height < 0)
6687             prev_height = height;
6688           else if (prev_height != height)
6689             fixed_height = FALSE;
6690         }
6691
6692       i++;
6693     }
6694   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6695
6696   if (!tree_view->priv->fixed_height_check)
6697    {
6698      if (fixed_height)
6699        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6700
6701      tree_view->priv->fixed_height_check = 1;
6702    }
6703
6704  done:
6705   if (validated_area)
6706     {
6707       GtkRequisition requisition;
6708
6709       /* We temporarily guess a size, under the assumption that it will be the
6710        * same when we get our next size_allocate.  If we don't do this, we'll be
6711        * in an inconsistent state when we call top_row_to_dy. */
6712
6713       /* FIXME: This is called from size_request, for some reason it is not infinitely
6714        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6715        * not allowed (from inside ->get_preferred_width/height() implementations, one
6716        * should call the vfuncs directly). However what is desired here is the full
6717        * size including any margins and limited by any alignment (i.e. after
6718        * GtkWidget:adjust_size_request() is called).
6719        *
6720        * Currently bypassing this but the real solution is to not update the scroll adjustments
6721        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6722        */
6723       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6724
6725       /* If rows above the current position have changed height, this has
6726        * affected the current view and thus needs a redraw.
6727        */
6728       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6729         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6730
6731       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6732                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6733       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6734                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6735
6736       if (queue_resize)
6737         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6738     }
6739
6740   if (path) gtk_tree_path_free (path);
6741   g_timer_destroy (timer);
6742
6743   return retval;
6744 }
6745
6746 static gboolean
6747 validate_rows (GtkTreeView *tree_view)
6748 {
6749   gboolean retval;
6750
6751   retval = do_validate_rows (tree_view, TRUE);
6752
6753   if (! retval && tree_view->priv->validate_rows_timer)
6754     {
6755       g_source_remove (tree_view->priv->validate_rows_timer);
6756       tree_view->priv->validate_rows_timer = 0;
6757     }
6758
6759   return retval;
6760 }
6761
6762 static gboolean
6763 validate_rows_handler (GtkTreeView *tree_view)
6764 {
6765   gboolean retval;
6766
6767   retval = do_validate_rows (tree_view, TRUE);
6768   if (! retval && tree_view->priv->validate_rows_timer)
6769     {
6770       g_source_remove (tree_view->priv->validate_rows_timer);
6771       tree_view->priv->validate_rows_timer = 0;
6772     }
6773
6774   return retval;
6775 }
6776
6777 static gboolean
6778 do_presize_handler (GtkTreeView *tree_view)
6779 {
6780   if (tree_view->priv->mark_rows_col_dirty)
6781     {
6782       if (tree_view->priv->tree)
6783         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6784       tree_view->priv->mark_rows_col_dirty = FALSE;
6785     }
6786   validate_visible_area (tree_view);
6787   tree_view->priv->presize_handler_timer = 0;
6788
6789   if (tree_view->priv->fixed_height_mode)
6790     {
6791       GtkRequisition requisition;
6792
6793       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6794                                      &requisition, NULL);
6795
6796       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6797                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6798       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6799                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6800       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6801     }
6802
6803   return FALSE;
6804 }
6805
6806 static gboolean
6807 presize_handler_callback (gpointer data)
6808 {
6809   do_presize_handler (GTK_TREE_VIEW (data));
6810
6811   return FALSE;
6812 }
6813
6814 static void
6815 install_presize_handler (GtkTreeView *tree_view)
6816 {
6817   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6818     return;
6819
6820   if (! tree_view->priv->presize_handler_timer)
6821     {
6822       tree_view->priv->presize_handler_timer =
6823         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6824     }
6825   if (! tree_view->priv->validate_rows_timer)
6826     {
6827       tree_view->priv->validate_rows_timer =
6828         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6829     }
6830 }
6831
6832 static gboolean
6833 scroll_sync_handler (GtkTreeView *tree_view)
6834 {
6835   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6836     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6837   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6838     gtk_tree_view_top_row_to_dy (tree_view);
6839   else
6840     gtk_tree_view_dy_to_top_row (tree_view);
6841
6842   tree_view->priv->scroll_sync_timer = 0;
6843
6844   return FALSE;
6845 }
6846
6847 static void
6848 install_scroll_sync_handler (GtkTreeView *tree_view)
6849 {
6850   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6851     return;
6852
6853   if (!tree_view->priv->scroll_sync_timer)
6854     {
6855       tree_view->priv->scroll_sync_timer =
6856         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6857     }
6858 }
6859
6860 static void
6861 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6862                            GtkTreePath *path,
6863                            gint         offset)
6864 {
6865   gtk_tree_row_reference_free (tree_view->priv->top_row);
6866
6867   if (!path)
6868     {
6869       tree_view->priv->top_row = NULL;
6870       tree_view->priv->top_row_dy = 0;
6871     }
6872   else
6873     {
6874       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6875       tree_view->priv->top_row_dy = offset;
6876     }
6877 }
6878
6879 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6880  * it's set to be NULL, and top_row_dy is 0;
6881  */
6882 static void
6883 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6884 {
6885   gint offset;
6886   GtkTreePath *path;
6887   GtkRBTree *tree;
6888   GtkRBNode *node;
6889
6890   if (tree_view->priv->tree == NULL)
6891     {
6892       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6893     }
6894   else
6895     {
6896       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6897                                         tree_view->priv->dy,
6898                                         &tree, &node);
6899
6900       if (tree == NULL)
6901         {
6902           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6903         }
6904       else
6905         {
6906           path = _gtk_tree_path_new_from_rbtree (tree, node);
6907           gtk_tree_view_set_top_row (tree_view, path, offset);
6908           gtk_tree_path_free (path);
6909         }
6910     }
6911 }
6912
6913 static void
6914 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6915 {
6916   GtkTreePath *path;
6917   GtkRBTree *tree;
6918   GtkRBNode *node;
6919   int new_dy;
6920
6921   /* Avoid recursive calls */
6922   if (tree_view->priv->in_top_row_to_dy)
6923     return;
6924
6925   if (tree_view->priv->top_row)
6926     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6927   else
6928     path = NULL;
6929
6930   if (!path)
6931     tree = NULL;
6932   else
6933     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6934
6935   if (path)
6936     gtk_tree_path_free (path);
6937
6938   if (tree == NULL)
6939     {
6940       /* keep dy and set new toprow */
6941       gtk_tree_row_reference_free (tree_view->priv->top_row);
6942       tree_view->priv->top_row = NULL;
6943       tree_view->priv->top_row_dy = 0;
6944       /* DO NOT install the idle handler */
6945       gtk_tree_view_dy_to_top_row (tree_view);
6946       return;
6947     }
6948
6949   if (gtk_tree_view_get_row_height (tree_view, node)
6950       < tree_view->priv->top_row_dy)
6951     {
6952       /* new top row -- do NOT install the idle handler */
6953       gtk_tree_view_dy_to_top_row (tree_view);
6954       return;
6955     }
6956
6957   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6958   new_dy += tree_view->priv->top_row_dy;
6959
6960   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6961     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6962
6963   new_dy = MAX (0, new_dy);
6964
6965   tree_view->priv->in_top_row_to_dy = TRUE;
6966   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6967   tree_view->priv->in_top_row_to_dy = FALSE;
6968 }
6969
6970
6971 void
6972 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6973                                             gboolean     install_handler)
6974 {
6975   tree_view->priv->mark_rows_col_dirty = TRUE;
6976
6977   if (install_handler)
6978     install_presize_handler (tree_view);
6979 }
6980
6981 /*
6982  * This function works synchronously (due to the while (validate_rows...)
6983  * loop).
6984  *
6985  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6986  * here. You now need to check that yourself.
6987  */
6988 void
6989 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6990                                 GtkTreeViewColumn *column)
6991 {
6992   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6993   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6994
6995   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6996
6997   do_presize_handler (tree_view);
6998   while (validate_rows (tree_view));
6999
7000   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7001 }
7002
7003 /* Drag-and-drop */
7004
7005 static void
7006 set_source_row (GdkDragContext *context,
7007                 GtkTreeModel   *model,
7008                 GtkTreePath    *source_row)
7009 {
7010   g_object_set_data_full (G_OBJECT (context),
7011                           I_("gtk-tree-view-source-row"),
7012                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7013                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7014 }
7015
7016 static GtkTreePath*
7017 get_source_row (GdkDragContext *context)
7018 {
7019   GtkTreeRowReference *ref =
7020     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7021
7022   if (ref)
7023     return gtk_tree_row_reference_get_path (ref);
7024   else
7025     return NULL;
7026 }
7027
7028 typedef struct
7029 {
7030   GtkTreeRowReference *dest_row;
7031   guint                path_down_mode   : 1;
7032   guint                empty_view_drop  : 1;
7033   guint                drop_append_mode : 1;
7034 }
7035 DestRow;
7036
7037 static void
7038 dest_row_free (gpointer data)
7039 {
7040   DestRow *dr = (DestRow *)data;
7041
7042   gtk_tree_row_reference_free (dr->dest_row);
7043   g_slice_free (DestRow, dr);
7044 }
7045
7046 static void
7047 set_dest_row (GdkDragContext *context,
7048               GtkTreeModel   *model,
7049               GtkTreePath    *dest_row,
7050               gboolean        path_down_mode,
7051               gboolean        empty_view_drop,
7052               gboolean        drop_append_mode)
7053 {
7054   DestRow *dr;
7055
7056   if (!dest_row)
7057     {
7058       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7059                               NULL, NULL);
7060       return;
7061     }
7062
7063   dr = g_slice_new (DestRow);
7064
7065   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7066   dr->path_down_mode = path_down_mode != FALSE;
7067   dr->empty_view_drop = empty_view_drop != FALSE;
7068   dr->drop_append_mode = drop_append_mode != FALSE;
7069
7070   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7071                           dr, (GDestroyNotify) dest_row_free);
7072 }
7073
7074 static GtkTreePath*
7075 get_dest_row (GdkDragContext *context,
7076               gboolean       *path_down_mode)
7077 {
7078   DestRow *dr =
7079     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7080
7081   if (dr)
7082     {
7083       GtkTreePath *path = NULL;
7084
7085       if (path_down_mode)
7086         *path_down_mode = dr->path_down_mode;
7087
7088       if (dr->dest_row)
7089         path = gtk_tree_row_reference_get_path (dr->dest_row);
7090       else if (dr->empty_view_drop)
7091         path = gtk_tree_path_new_from_indices (0, -1);
7092       else
7093         path = NULL;
7094
7095       if (path && dr->drop_append_mode)
7096         gtk_tree_path_next (path);
7097
7098       return path;
7099     }
7100   else
7101     return NULL;
7102 }
7103
7104 /* Get/set whether drag_motion requested the drag data and
7105  * drag_data_received should thus not actually insert the data,
7106  * since the data doesn't result from a drop.
7107  */
7108 static void
7109 set_status_pending (GdkDragContext *context,
7110                     GdkDragAction   suggested_action)
7111 {
7112   g_object_set_data (G_OBJECT (context),
7113                      I_("gtk-tree-view-status-pending"),
7114                      GINT_TO_POINTER (suggested_action));
7115 }
7116
7117 static GdkDragAction
7118 get_status_pending (GdkDragContext *context)
7119 {
7120   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7121                                              "gtk-tree-view-status-pending"));
7122 }
7123
7124 static TreeViewDragInfo*
7125 get_info (GtkTreeView *tree_view)
7126 {
7127   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7128 }
7129
7130 static void
7131 destroy_info (TreeViewDragInfo *di)
7132 {
7133   g_slice_free (TreeViewDragInfo, di);
7134 }
7135
7136 static TreeViewDragInfo*
7137 ensure_info (GtkTreeView *tree_view)
7138 {
7139   TreeViewDragInfo *di;
7140
7141   di = get_info (tree_view);
7142
7143   if (di == NULL)
7144     {
7145       di = g_slice_new0 (TreeViewDragInfo);
7146
7147       g_object_set_data_full (G_OBJECT (tree_view),
7148                               I_("gtk-tree-view-drag-info"),
7149                               di,
7150                               (GDestroyNotify) destroy_info);
7151     }
7152
7153   return di;
7154 }
7155
7156 static void
7157 remove_info (GtkTreeView *tree_view)
7158 {
7159   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7160 }
7161
7162 #if 0
7163 static gint
7164 drag_scan_timeout (gpointer data)
7165 {
7166   GtkTreeView *tree_view;
7167   gint x, y;
7168   GdkModifierType state;
7169   GtkTreePath *path = NULL;
7170   GtkTreeViewColumn *column = NULL;
7171   GdkRectangle visible_rect;
7172
7173   GDK_THREADS_ENTER ();
7174
7175   tree_view = GTK_TREE_VIEW (data);
7176
7177   gdk_window_get_device_position (tree_view->priv->bin_window,
7178                                   gdk_device_manager_get_client_pointer (
7179                                     gdk_display_get_device_manager (
7180                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7181                                   &x, &y, &state);
7182
7183   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7184
7185   /* See if we are near the edge. */
7186   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7187       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7188       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7189       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7190     {
7191       gtk_tree_view_get_path_at_pos (tree_view,
7192                                      tree_view->priv->bin_window,
7193                                      x, y,
7194                                      &path,
7195                                      &column,
7196                                      NULL,
7197                                      NULL);
7198
7199       if (path != NULL)
7200         {
7201           gtk_tree_view_scroll_to_cell (tree_view,
7202                                         path,
7203                                         column,
7204                                         TRUE,
7205                                         0.5, 0.5);
7206
7207           gtk_tree_path_free (path);
7208         }
7209     }
7210
7211   GDK_THREADS_LEAVE ();
7212
7213   return TRUE;
7214 }
7215 #endif /* 0 */
7216
7217 static void
7218 add_scroll_timeout (GtkTreeView *tree_view)
7219 {
7220   if (tree_view->priv->scroll_timeout == 0)
7221     {
7222       tree_view->priv->scroll_timeout =
7223         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7224     }
7225 }
7226
7227 static void
7228 remove_scroll_timeout (GtkTreeView *tree_view)
7229 {
7230   if (tree_view->priv->scroll_timeout != 0)
7231     {
7232       g_source_remove (tree_view->priv->scroll_timeout);
7233       tree_view->priv->scroll_timeout = 0;
7234     }
7235 }
7236
7237 static gboolean
7238 check_model_dnd (GtkTreeModel *model,
7239                  GType         required_iface,
7240                  const gchar  *signal)
7241 {
7242   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7243     {
7244       g_warning ("You must override the default '%s' handler "
7245                  "on GtkTreeView when using models that don't support "
7246                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7247                  "is to connect to '%s' and call "
7248                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7249                  "the default handler from running. Look at the source code "
7250                  "for the default handler in gtktreeview.c to get an idea what "
7251                  "your handler should do. (gtktreeview.c is in the GTK source "
7252                  "code.) If you're using GTK from a language other than C, "
7253                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7254                  signal, g_type_name (required_iface), signal);
7255       return FALSE;
7256     }
7257   else
7258     return TRUE;
7259 }
7260
7261 static void
7262 remove_open_timeout (GtkTreeView *tree_view)
7263 {
7264   if (tree_view->priv->open_dest_timeout != 0)
7265     {
7266       g_source_remove (tree_view->priv->open_dest_timeout);
7267       tree_view->priv->open_dest_timeout = 0;
7268     }
7269 }
7270
7271
7272 static gint
7273 open_row_timeout (gpointer data)
7274 {
7275   GtkTreeView *tree_view = data;
7276   GtkTreePath *dest_path = NULL;
7277   GtkTreeViewDropPosition pos;
7278   gboolean result = FALSE;
7279
7280   gtk_tree_view_get_drag_dest_row (tree_view,
7281                                    &dest_path,
7282                                    &pos);
7283
7284   if (dest_path &&
7285       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7286        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7287     {
7288       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7289       tree_view->priv->open_dest_timeout = 0;
7290
7291       gtk_tree_path_free (dest_path);
7292     }
7293   else
7294     {
7295       if (dest_path)
7296         gtk_tree_path_free (dest_path);
7297
7298       result = TRUE;
7299     }
7300
7301   return result;
7302 }
7303
7304 static gboolean
7305 scroll_row_timeout (gpointer data)
7306 {
7307   GtkTreeView *tree_view = data;
7308
7309   gtk_tree_view_vertical_autoscroll (tree_view);
7310
7311   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7312     gtk_tree_view_update_rubber_band (tree_view);
7313
7314   return TRUE;
7315 }
7316
7317 /* Returns TRUE if event should not be propagated to parent widgets */
7318 static gboolean
7319 set_destination_row (GtkTreeView    *tree_view,
7320                      GdkDragContext *context,
7321                      /* coordinates relative to the widget */
7322                      gint            x,
7323                      gint            y,
7324                      GdkDragAction  *suggested_action,
7325                      GdkAtom        *target)
7326 {
7327   GtkTreePath *path = NULL;
7328   GtkTreeViewDropPosition pos;
7329   GtkTreeViewDropPosition old_pos;
7330   TreeViewDragInfo *di;
7331   GtkWidget *widget;
7332   GtkTreePath *old_dest_path = NULL;
7333   gboolean can_drop = FALSE;
7334
7335   *suggested_action = 0;
7336   *target = GDK_NONE;
7337
7338   widget = GTK_WIDGET (tree_view);
7339
7340   di = get_info (tree_view);
7341
7342   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7343     {
7344       /* someone unset us as a drag dest, note that if
7345        * we return FALSE drag_leave isn't called
7346        */
7347
7348       gtk_tree_view_set_drag_dest_row (tree_view,
7349                                        NULL,
7350                                        GTK_TREE_VIEW_DROP_BEFORE);
7351
7352       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7353       remove_open_timeout (GTK_TREE_VIEW (widget));
7354
7355       return FALSE; /* no longer a drop site */
7356     }
7357
7358   *target = gtk_drag_dest_find_target (widget, context,
7359                                        gtk_drag_dest_get_target_list (widget));
7360   if (*target == GDK_NONE)
7361     {
7362       return FALSE;
7363     }
7364
7365   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7366                                           x, y,
7367                                           &path,
7368                                           &pos))
7369     {
7370       gint n_children;
7371       GtkTreeModel *model;
7372
7373       remove_open_timeout (tree_view);
7374
7375       /* the row got dropped on empty space, let's setup a special case
7376        */
7377
7378       if (path)
7379         gtk_tree_path_free (path);
7380
7381       model = gtk_tree_view_get_model (tree_view);
7382
7383       n_children = gtk_tree_model_iter_n_children (model, NULL);
7384       if (n_children)
7385         {
7386           pos = GTK_TREE_VIEW_DROP_AFTER;
7387           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7388         }
7389       else
7390         {
7391           pos = GTK_TREE_VIEW_DROP_BEFORE;
7392           path = gtk_tree_path_new_from_indices (0, -1);
7393         }
7394
7395       can_drop = TRUE;
7396
7397       goto out;
7398     }
7399
7400   g_assert (path);
7401
7402   /* If we left the current row's "open" zone, unset the timeout for
7403    * opening the row
7404    */
7405   gtk_tree_view_get_drag_dest_row (tree_view,
7406                                    &old_dest_path,
7407                                    &old_pos);
7408
7409   if (old_dest_path &&
7410       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7411        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7412          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7413     remove_open_timeout (tree_view);
7414
7415   if (old_dest_path)
7416     gtk_tree_path_free (old_dest_path);
7417
7418   if (TRUE /* FIXME if the location droppable predicate */)
7419     {
7420       can_drop = TRUE;
7421     }
7422
7423 out:
7424   if (can_drop)
7425     {
7426       GtkWidget *source_widget;
7427
7428       *suggested_action = gdk_drag_context_get_suggested_action (context);
7429       source_widget = gtk_drag_get_source_widget (context);
7430
7431       if (source_widget == widget)
7432         {
7433           /* Default to MOVE, unless the user has
7434            * pressed ctrl or shift to affect available actions
7435            */
7436           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7437             *suggested_action = GDK_ACTION_MOVE;
7438         }
7439
7440       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7441                                        path, pos);
7442     }
7443   else
7444     {
7445       /* can't drop here */
7446       remove_open_timeout (tree_view);
7447
7448       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7449                                        NULL,
7450                                        GTK_TREE_VIEW_DROP_BEFORE);
7451     }
7452
7453   if (path)
7454     gtk_tree_path_free (path);
7455
7456   return TRUE;
7457 }
7458
7459 static GtkTreePath*
7460 get_logical_dest_row (GtkTreeView *tree_view,
7461                       gboolean    *path_down_mode,
7462                       gboolean    *drop_append_mode)
7463 {
7464   /* adjust path to point to the row the drop goes in front of */
7465   GtkTreePath *path = NULL;
7466   GtkTreeViewDropPosition pos;
7467
7468   g_return_val_if_fail (path_down_mode != NULL, NULL);
7469   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7470
7471   *path_down_mode = FALSE;
7472   *drop_append_mode = 0;
7473
7474   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7475
7476   if (path == NULL)
7477     return NULL;
7478
7479   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7480     ; /* do nothing */
7481   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7482            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7483     *path_down_mode = TRUE;
7484   else
7485     {
7486       GtkTreeIter iter;
7487       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7488
7489       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7490
7491       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7492           !gtk_tree_model_iter_next (model, &iter))
7493         *drop_append_mode = 1;
7494       else
7495         {
7496           *drop_append_mode = 0;
7497           gtk_tree_path_next (path);
7498         }
7499     }
7500
7501   return path;
7502 }
7503
7504 static gboolean
7505 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7506                                         GdkEventMotion   *event)
7507 {
7508   GtkWidget *widget = GTK_WIDGET (tree_view);
7509   GdkDragContext *context;
7510   TreeViewDragInfo *di;
7511   GtkTreePath *path = NULL;
7512   gint button;
7513   gint cell_x, cell_y;
7514   GtkTreeModel *model;
7515   gboolean retval = FALSE;
7516
7517   di = get_info (tree_view);
7518
7519   if (di == NULL || !di->source_set)
7520     goto out;
7521
7522   if (tree_view->priv->pressed_button < 0)
7523     goto out;
7524
7525   if (!gtk_drag_check_threshold (widget,
7526                                  tree_view->priv->press_start_x,
7527                                  tree_view->priv->press_start_y,
7528                                  event->x, event->y))
7529     goto out;
7530
7531   model = gtk_tree_view_get_model (tree_view);
7532
7533   if (model == NULL)
7534     goto out;
7535
7536   button = tree_view->priv->pressed_button;
7537   tree_view->priv->pressed_button = -1;
7538
7539   gtk_tree_view_get_path_at_pos (tree_view,
7540                                  tree_view->priv->press_start_x,
7541                                  tree_view->priv->press_start_y,
7542                                  &path,
7543                                  NULL,
7544                                  &cell_x,
7545                                  &cell_y);
7546
7547   if (path == NULL)
7548     goto out;
7549
7550   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7551       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7552                                            path))
7553     goto out;
7554
7555   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7556     goto out;
7557
7558   /* Now we can begin the drag */
7559
7560   retval = TRUE;
7561
7562   context = gtk_drag_begin (widget,
7563                             gtk_drag_source_get_target_list (widget),
7564                             di->source_actions,
7565                             button,
7566                             (GdkEvent*)event);
7567
7568   set_source_row (context, model, path);
7569
7570  out:
7571   if (path)
7572     gtk_tree_path_free (path);
7573
7574   return retval;
7575 }
7576
7577
7578 static void
7579 gtk_tree_view_drag_begin (GtkWidget      *widget,
7580                           GdkDragContext *context)
7581 {
7582   GtkTreeView *tree_view;
7583   GtkTreePath *path = NULL;
7584   gint cell_x, cell_y;
7585   cairo_surface_t *row_pix;
7586   TreeViewDragInfo *di;
7587
7588   tree_view = GTK_TREE_VIEW (widget);
7589
7590   /* if the user uses a custom DND source impl, we don't set the icon here */
7591   di = get_info (tree_view);
7592
7593   if (di == NULL || !di->source_set)
7594     return;
7595
7596   gtk_tree_view_get_path_at_pos (tree_view,
7597                                  tree_view->priv->press_start_x,
7598                                  tree_view->priv->press_start_y,
7599                                  &path,
7600                                  NULL,
7601                                  &cell_x,
7602                                  &cell_y);
7603
7604   /* If path is NULL, there's nothing we can drag.  For now, we silently
7605    * bail out.  Actually, dragging should not be possible from an empty
7606    * tree view, but there's no way we can cancel that from here.
7607    * Automatically unsetting the tree view as drag source for empty models
7608    * is something that would likely break other people's code ...
7609    */
7610   if (!path)
7611     return;
7612
7613   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7614                                                 path);
7615   cairo_surface_set_device_offset (row_pix,
7616                                    /* the + 1 is for the black border in the icon */
7617                                    - (tree_view->priv->press_start_x + 1),
7618                                    - (cell_y + 1));
7619
7620   gtk_drag_set_icon_surface (context, row_pix);
7621
7622   cairo_surface_destroy (row_pix);
7623   gtk_tree_path_free (path);
7624 }
7625
7626 static void
7627 gtk_tree_view_drag_end (GtkWidget      *widget,
7628                         GdkDragContext *context)
7629 {
7630   /* do nothing */
7631 }
7632
7633 /* Default signal implementations for the drag signals */
7634 static void
7635 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7636                              GdkDragContext   *context,
7637                              GtkSelectionData *selection_data,
7638                              guint             info,
7639                              guint             time)
7640 {
7641   GtkTreeView *tree_view;
7642   GtkTreeModel *model;
7643   TreeViewDragInfo *di;
7644   GtkTreePath *source_row;
7645
7646   tree_view = GTK_TREE_VIEW (widget);
7647
7648   model = gtk_tree_view_get_model (tree_view);
7649
7650   if (model == NULL)
7651     return;
7652
7653   di = get_info (GTK_TREE_VIEW (widget));
7654
7655   if (di == NULL)
7656     return;
7657
7658   source_row = get_source_row (context);
7659
7660   if (source_row == NULL)
7661     return;
7662
7663   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7664    * any model; for DragSource models there are some other targets
7665    * we also support.
7666    */
7667
7668   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7669       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7670                                           source_row,
7671                                           selection_data))
7672     goto done;
7673
7674   /* If drag_data_get does nothing, try providing row data. */
7675   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7676     {
7677       gtk_tree_set_row_drag_data (selection_data,
7678                                   model,
7679                                   source_row);
7680     }
7681
7682  done:
7683   gtk_tree_path_free (source_row);
7684 }
7685
7686
7687 static void
7688 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7689                                 GdkDragContext *context)
7690 {
7691   TreeViewDragInfo *di;
7692   GtkTreeModel *model;
7693   GtkTreeView *tree_view;
7694   GtkTreePath *source_row;
7695
7696   tree_view = GTK_TREE_VIEW (widget);
7697   model = gtk_tree_view_get_model (tree_view);
7698
7699   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7700     return;
7701
7702   di = get_info (tree_view);
7703
7704   if (di == NULL)
7705     return;
7706
7707   source_row = get_source_row (context);
7708
7709   if (source_row == NULL)
7710     return;
7711
7712   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7713                                          source_row);
7714
7715   gtk_tree_path_free (source_row);
7716
7717   set_source_row (context, NULL, NULL);
7718 }
7719
7720 static void
7721 gtk_tree_view_drag_leave (GtkWidget      *widget,
7722                           GdkDragContext *context,
7723                           guint             time)
7724 {
7725   /* unset any highlight row */
7726   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7727                                    NULL,
7728                                    GTK_TREE_VIEW_DROP_BEFORE);
7729
7730   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7731   remove_open_timeout (GTK_TREE_VIEW (widget));
7732 }
7733
7734
7735 static gboolean
7736 gtk_tree_view_drag_motion (GtkWidget        *widget,
7737                            GdkDragContext   *context,
7738                            /* coordinates relative to the widget */
7739                            gint              x,
7740                            gint              y,
7741                            guint             time)
7742 {
7743   gboolean empty;
7744   GtkTreePath *path = NULL;
7745   GtkTreeViewDropPosition pos;
7746   GtkTreeView *tree_view;
7747   GdkDragAction suggested_action = 0;
7748   GdkAtom target;
7749
7750   tree_view = GTK_TREE_VIEW (widget);
7751
7752   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7753     return FALSE;
7754
7755   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7756
7757   /* we only know this *after* set_desination_row */
7758   empty = tree_view->priv->empty_view_drop;
7759
7760   if (path == NULL && !empty)
7761     {
7762       /* Can't drop here. */
7763       gdk_drag_status (context, 0, time);
7764     }
7765   else
7766     {
7767       if (tree_view->priv->open_dest_timeout == 0 &&
7768           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7769            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7770         {
7771           tree_view->priv->open_dest_timeout =
7772             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7773         }
7774       else
7775         {
7776           add_scroll_timeout (tree_view);
7777         }
7778
7779       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7780         {
7781           /* Request data so we can use the source row when
7782            * determining whether to accept the drop
7783            */
7784           set_status_pending (context, suggested_action);
7785           gtk_drag_get_data (widget, context, target, time);
7786         }
7787       else
7788         {
7789           set_status_pending (context, 0);
7790           gdk_drag_status (context, suggested_action, time);
7791         }
7792     }
7793
7794   if (path)
7795     gtk_tree_path_free (path);
7796
7797   return TRUE;
7798 }
7799
7800
7801 static gboolean
7802 gtk_tree_view_drag_drop (GtkWidget        *widget,
7803                          GdkDragContext   *context,
7804                          /* coordinates relative to the widget */
7805                          gint              x,
7806                          gint              y,
7807                          guint             time)
7808 {
7809   GtkTreeView *tree_view;
7810   GtkTreePath *path;
7811   GdkDragAction suggested_action = 0;
7812   GdkAtom target = GDK_NONE;
7813   TreeViewDragInfo *di;
7814   GtkTreeModel *model;
7815   gboolean path_down_mode;
7816   gboolean drop_append_mode;
7817
7818   tree_view = GTK_TREE_VIEW (widget);
7819
7820   model = gtk_tree_view_get_model (tree_view);
7821
7822   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7823   remove_open_timeout (GTK_TREE_VIEW (widget));
7824
7825   di = get_info (tree_view);
7826
7827   if (di == NULL)
7828     return FALSE;
7829
7830   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7831     return FALSE;
7832
7833   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7834     return FALSE;
7835
7836   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7837
7838   if (target != GDK_NONE && path != NULL)
7839     {
7840       /* in case a motion had requested drag data, change things so we
7841        * treat drag data receives as a drop.
7842        */
7843       set_status_pending (context, 0);
7844       set_dest_row (context, model, path,
7845                     path_down_mode, tree_view->priv->empty_view_drop,
7846                     drop_append_mode);
7847     }
7848
7849   if (path)
7850     gtk_tree_path_free (path);
7851
7852   /* Unset this thing */
7853   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7854                                    NULL,
7855                                    GTK_TREE_VIEW_DROP_BEFORE);
7856
7857   if (target != GDK_NONE)
7858     {
7859       gtk_drag_get_data (widget, context, target, time);
7860       return TRUE;
7861     }
7862   else
7863     return FALSE;
7864 }
7865
7866 static void
7867 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7868                                   GdkDragContext   *context,
7869                                   /* coordinates relative to the widget */
7870                                   gint              x,
7871                                   gint              y,
7872                                   GtkSelectionData *selection_data,
7873                                   guint             info,
7874                                   guint             time)
7875 {
7876   GtkTreePath *path;
7877   TreeViewDragInfo *di;
7878   gboolean accepted = FALSE;
7879   GtkTreeModel *model;
7880   GtkTreeView *tree_view;
7881   GtkTreePath *dest_row;
7882   GdkDragAction suggested_action;
7883   gboolean path_down_mode;
7884   gboolean drop_append_mode;
7885
7886   tree_view = GTK_TREE_VIEW (widget);
7887
7888   model = gtk_tree_view_get_model (tree_view);
7889
7890   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7891     return;
7892
7893   di = get_info (tree_view);
7894
7895   if (di == NULL)
7896     return;
7897
7898   suggested_action = get_status_pending (context);
7899
7900   if (suggested_action)
7901     {
7902       /* We are getting this data due to a request in drag_motion,
7903        * rather than due to a request in drag_drop, so we are just
7904        * supposed to call drag_status, not actually paste in the
7905        * data.
7906        */
7907       path = get_logical_dest_row (tree_view, &path_down_mode,
7908                                    &drop_append_mode);
7909
7910       if (path == NULL)
7911         suggested_action = 0;
7912       else if (path_down_mode)
7913         gtk_tree_path_down (path);
7914
7915       if (suggested_action)
7916         {
7917           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7918                                                      path,
7919                                                      selection_data))
7920             {
7921               if (path_down_mode)
7922                 {
7923                   path_down_mode = FALSE;
7924                   gtk_tree_path_up (path);
7925
7926                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7927                                                              path,
7928                                                              selection_data))
7929                     suggested_action = 0;
7930                 }
7931               else
7932                 suggested_action = 0;
7933             }
7934         }
7935
7936       gdk_drag_status (context, suggested_action, time);
7937
7938       if (path)
7939         gtk_tree_path_free (path);
7940
7941       /* If you can't drop, remove user drop indicator until the next motion */
7942       if (suggested_action == 0)
7943         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7944                                          NULL,
7945                                          GTK_TREE_VIEW_DROP_BEFORE);
7946
7947       return;
7948     }
7949
7950   dest_row = get_dest_row (context, &path_down_mode);
7951
7952   if (dest_row == NULL)
7953     return;
7954
7955   if (gtk_selection_data_get_length (selection_data) >= 0)
7956     {
7957       if (path_down_mode)
7958         {
7959           gtk_tree_path_down (dest_row);
7960           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7961                                                      dest_row, selection_data))
7962             gtk_tree_path_up (dest_row);
7963         }
7964     }
7965
7966   if (gtk_selection_data_get_length (selection_data) >= 0)
7967     {
7968       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7969                                                  dest_row,
7970                                                  selection_data))
7971         accepted = TRUE;
7972     }
7973
7974   gtk_drag_finish (context,
7975                    accepted,
7976                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7977                    time);
7978
7979   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7980       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7981       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7982     {
7983       /* special special case drag to "0", scroll to first item */
7984       if (!tree_view->priv->scroll_to_path)
7985         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7986     }
7987
7988   gtk_tree_path_free (dest_row);
7989
7990   /* drop dest_row */
7991   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7992 }
7993
7994
7995
7996 /* GtkContainer Methods
7997  */
7998
7999
8000 static void
8001 gtk_tree_view_remove (GtkContainer *container,
8002                       GtkWidget    *widget)
8003 {
8004   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8005   GtkTreeViewChild *child = NULL;
8006   GList *tmp_list;
8007
8008   tmp_list = tree_view->priv->children;
8009   while (tmp_list)
8010     {
8011       child = tmp_list->data;
8012       if (child->widget == widget)
8013         {
8014           gtk_widget_unparent (widget);
8015
8016           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8017           g_list_free_1 (tmp_list);
8018           g_slice_free (GtkTreeViewChild, child);
8019           return;
8020         }
8021
8022       tmp_list = tmp_list->next;
8023     }
8024
8025   tmp_list = tree_view->priv->columns;
8026
8027   while (tmp_list)
8028     {
8029       GtkTreeViewColumn *column;
8030       GtkWidget         *button;
8031
8032       column = tmp_list->data;
8033       button = gtk_tree_view_column_get_button (column);
8034
8035       if (button == widget)
8036         {
8037           gtk_widget_unparent (widget);
8038           return;
8039         }
8040       tmp_list = tmp_list->next;
8041     }
8042 }
8043
8044 static void
8045 gtk_tree_view_forall (GtkContainer *container,
8046                       gboolean      include_internals,
8047                       GtkCallback   callback,
8048                       gpointer      callback_data)
8049 {
8050   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8051   GtkTreeViewChild *child = NULL;
8052   GtkTreeViewColumn *column;
8053   GtkWidget *button;
8054   GList *tmp_list;
8055
8056   tmp_list = tree_view->priv->children;
8057   while (tmp_list)
8058     {
8059       child = tmp_list->data;
8060       tmp_list = tmp_list->next;
8061
8062       (* callback) (child->widget, callback_data);
8063     }
8064   if (include_internals == FALSE)
8065     return;
8066
8067   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8068     {
8069       column = tmp_list->data;
8070       button = gtk_tree_view_column_get_button (column);
8071
8072       if (button)
8073         (* callback) (button, callback_data);
8074     }
8075 }
8076
8077 /* Returns TRUE is any of the columns contains a cell that can-focus.
8078  * If this is not the case, a column-spanning focus rectangle will be
8079  * drawn.
8080  */
8081 static gboolean
8082 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8083 {
8084   GList *list;
8085
8086   for (list = tree_view->priv->columns; list; list = list->next)
8087     {
8088       GtkTreeViewColumn *column = list->data;
8089
8090       if (!gtk_tree_view_column_get_visible (column))
8091         continue;
8092       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8093         return TRUE;
8094     }
8095
8096   return FALSE;
8097 }
8098
8099 static void
8100 column_sizing_notify (GObject    *object,
8101                       GParamSpec *pspec,
8102                       gpointer    data)
8103 {
8104   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8105
8106   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8107     /* disable fixed height mode */
8108     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8109 }
8110
8111 /**
8112  * gtk_tree_view_set_fixed_height_mode:
8113  * @tree_view: a #GtkTreeView
8114  * @enable: %TRUE to enable fixed height mode
8115  *
8116  * Enables or disables the fixed height mode of @tree_view.
8117  * Fixed height mode speeds up #GtkTreeView by assuming that all
8118  * rows have the same height.
8119  * Only enable this option if all rows are the same height and all
8120  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8121  *
8122  * Since: 2.6
8123  **/
8124 void
8125 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8126                                      gboolean     enable)
8127 {
8128   GList *l;
8129
8130   enable = enable != FALSE;
8131
8132   if (enable == tree_view->priv->fixed_height_mode)
8133     return;
8134
8135   if (!enable)
8136     {
8137       tree_view->priv->fixed_height_mode = 0;
8138       tree_view->priv->fixed_height = -1;
8139
8140       /* force a revalidation */
8141       install_presize_handler (tree_view);
8142     }
8143   else
8144     {
8145       /* make sure all columns are of type FIXED */
8146       for (l = tree_view->priv->columns; l; l = l->next)
8147         {
8148           GtkTreeViewColumn *c = l->data;
8149
8150           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8151         }
8152
8153       /* yes, we really have to do this is in a separate loop */
8154       for (l = tree_view->priv->columns; l; l = l->next)
8155         g_signal_connect (l->data, "notify::sizing",
8156                           G_CALLBACK (column_sizing_notify), tree_view);
8157
8158       tree_view->priv->fixed_height_mode = 1;
8159       tree_view->priv->fixed_height = -1;
8160
8161       if (tree_view->priv->tree)
8162         initialize_fixed_height_mode (tree_view);
8163     }
8164
8165   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8166 }
8167
8168 /**
8169  * gtk_tree_view_get_fixed_height_mode:
8170  * @tree_view: a #GtkTreeView
8171  *
8172  * Returns whether fixed height mode is turned on for @tree_view.
8173  *
8174  * Return value: %TRUE if @tree_view is in fixed height mode
8175  *
8176  * Since: 2.6
8177  **/
8178 gboolean
8179 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8180 {
8181   return tree_view->priv->fixed_height_mode;
8182 }
8183
8184 /* Returns TRUE if the focus is within the headers, after the focus operation is
8185  * done
8186  */
8187 static gboolean
8188 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8189                             GtkDirectionType  dir,
8190                             gboolean          clamp_column_visible)
8191 {
8192   GtkTreeViewColumn *column;
8193   GtkWidget *focus_child;
8194   GtkWidget *button;
8195   GList *last_column, *first_column;
8196   GList *tmp_list;
8197   gboolean rtl;
8198
8199   if (! tree_view->priv->headers_visible)
8200     return FALSE;
8201
8202   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8203
8204   first_column = tree_view->priv->columns;
8205   while (first_column)
8206     {
8207       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8208       button = gtk_tree_view_column_get_button (column);
8209
8210       if (gtk_widget_get_can_focus (button) &&
8211           gtk_tree_view_column_get_visible (column) &&
8212           (gtk_tree_view_column_get_clickable (column) ||
8213            gtk_tree_view_column_get_reorderable (column)))
8214         break;
8215       first_column = first_column->next;
8216     }
8217
8218   /* No headers are visible, or are focusable.  We can't focus in or out.
8219    */
8220   if (first_column == NULL)
8221     return FALSE;
8222
8223   last_column = g_list_last (tree_view->priv->columns);
8224   while (last_column)
8225     {
8226       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8227       button = gtk_tree_view_column_get_button (column);
8228
8229       if (gtk_widget_get_can_focus (button) &&
8230           gtk_tree_view_column_get_visible (column) &&
8231           (gtk_tree_view_column_get_clickable (column) ||
8232            gtk_tree_view_column_get_reorderable (column)))
8233         break;
8234       last_column = last_column->prev;
8235     }
8236
8237
8238   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8239
8240   switch (dir)
8241     {
8242     case GTK_DIR_TAB_BACKWARD:
8243     case GTK_DIR_TAB_FORWARD:
8244     case GTK_DIR_UP:
8245     case GTK_DIR_DOWN:
8246       if (focus_child == NULL)
8247         {
8248           if (tree_view->priv->focus_column != NULL)
8249             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8250           else
8251             button = NULL;
8252
8253           if (button && gtk_widget_get_can_focus (button))
8254             focus_child = button;
8255           else
8256             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8257
8258           gtk_widget_grab_focus (focus_child);
8259           break;
8260         }
8261       return FALSE;
8262
8263     case GTK_DIR_LEFT:
8264     case GTK_DIR_RIGHT:
8265       if (focus_child == NULL)
8266         {
8267           if (tree_view->priv->focus_column != NULL)
8268             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8269           else if (dir == GTK_DIR_LEFT)
8270             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8271           else
8272             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8273
8274           gtk_widget_grab_focus (focus_child);
8275           break;
8276         }
8277
8278       if (gtk_widget_child_focus (focus_child, dir))
8279         {
8280           /* The focus moves inside the button. */
8281           /* This is probably a great example of bad UI */
8282           break;
8283         }
8284
8285       /* We need to move the focus among the row of buttons. */
8286       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8287         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8288           break;
8289
8290       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8291           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8292         {
8293           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8294           break;
8295         }
8296
8297       while (tmp_list)
8298         {
8299           GtkTreeViewColumn *column;
8300           GtkWidget         *button;
8301
8302           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8303             tmp_list = tmp_list->next;
8304           else
8305             tmp_list = tmp_list->prev;
8306
8307           if (tmp_list == NULL)
8308             {
8309               g_warning ("Internal button not found");
8310               break;
8311             }
8312           column = tmp_list->data;
8313           button = gtk_tree_view_column_get_button (column);
8314           if (button &&
8315               gtk_tree_view_column_get_visible (column) &&
8316               gtk_widget_get_can_focus (button))
8317             {
8318               focus_child = button;
8319               gtk_widget_grab_focus (button);
8320               break;
8321             }
8322         }
8323       break;
8324     default:
8325       g_assert_not_reached ();
8326       break;
8327     }
8328
8329   /* if focus child is non-null, we assume it's been set to the current focus child
8330    */
8331   if (focus_child)
8332     {
8333       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8334         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8335           {
8336             _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (tmp_list->data));
8337             break;
8338           }
8339
8340       if (clamp_column_visible)
8341         {
8342           gtk_tree_view_clamp_column_visible (tree_view,
8343                                               tree_view->priv->focus_column,
8344                                               FALSE);
8345         }
8346     }
8347
8348   return (focus_child != NULL);
8349 }
8350
8351 /* This function returns in 'path' the first focusable path, if the given path
8352  * is already focusable, it's the returned one.
8353  */
8354 static gboolean
8355 search_first_focusable_path (GtkTreeView  *tree_view,
8356                              GtkTreePath **path,
8357                              gboolean      search_forward,
8358                              GtkRBTree   **new_tree,
8359                              GtkRBNode   **new_node)
8360 {
8361   GtkRBTree *tree = NULL;
8362   GtkRBNode *node = NULL;
8363
8364   if (!path || !*path)
8365     return FALSE;
8366
8367   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8368
8369   if (!tree || !node)
8370     return FALSE;
8371
8372   while (node && row_is_separator (tree_view, NULL, *path))
8373     {
8374       if (search_forward)
8375         _gtk_rbtree_next_full (tree, node, &tree, &node);
8376       else
8377         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8378
8379       if (*path)
8380         gtk_tree_path_free (*path);
8381
8382       if (node)
8383         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8384       else
8385         *path = NULL;
8386     }
8387
8388   if (new_tree)
8389     *new_tree = tree;
8390
8391   if (new_node)
8392     *new_node = node;
8393
8394   return (*path != NULL);
8395 }
8396
8397 static gint
8398 gtk_tree_view_focus (GtkWidget        *widget,
8399                      GtkDirectionType  direction)
8400 {
8401   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8402   GtkContainer *container = GTK_CONTAINER (widget);
8403   GtkWidget *focus_child;
8404
8405   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8406     return FALSE;
8407
8408   focus_child = gtk_container_get_focus_child (container);
8409
8410   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8411   /* Case 1.  Headers currently have focus. */
8412   if (focus_child)
8413     {
8414       switch (direction)
8415         {
8416         case GTK_DIR_LEFT:
8417         case GTK_DIR_RIGHT:
8418           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8419           return TRUE;
8420         case GTK_DIR_TAB_BACKWARD:
8421         case GTK_DIR_UP:
8422           return FALSE;
8423         case GTK_DIR_TAB_FORWARD:
8424         case GTK_DIR_DOWN:
8425           gtk_widget_grab_focus (widget);
8426           return TRUE;
8427         default:
8428           g_assert_not_reached ();
8429           return FALSE;
8430         }
8431     }
8432
8433   /* Case 2. We don't have focus at all. */
8434   if (!gtk_widget_has_focus (widget))
8435     {
8436       gtk_widget_grab_focus (widget);
8437       return TRUE;
8438     }
8439
8440   /* Case 3. We have focus already. */
8441   if (direction == GTK_DIR_TAB_BACKWARD)
8442     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8443   else if (direction == GTK_DIR_TAB_FORWARD)
8444     return FALSE;
8445
8446   /* Other directions caught by the keybindings */
8447   gtk_widget_grab_focus (widget);
8448   return TRUE;
8449 }
8450
8451 static void
8452 gtk_tree_view_grab_focus (GtkWidget *widget)
8453 {
8454   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8455
8456   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8457 }
8458
8459 static void
8460 gtk_tree_view_style_updated (GtkWidget *widget)
8461 {
8462   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8463   GList *list;
8464   GtkTreeViewColumn *column;
8465
8466   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8467
8468   if (gtk_widget_get_realized (widget))
8469     {
8470       gtk_tree_view_ensure_background (tree_view);
8471
8472       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8473       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8474     }
8475
8476   for (list = tree_view->priv->columns; list; list = list->next)
8477     {
8478       column = list->data;
8479       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8480     }
8481
8482   tree_view->priv->fixed_height = -1;
8483   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8484
8485   gtk_widget_queue_resize (widget);
8486 }
8487
8488
8489 static void
8490 gtk_tree_view_set_focus_child (GtkContainer *container,
8491                                GtkWidget    *child)
8492 {
8493   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8494   GList *list;
8495
8496   for (list = tree_view->priv->columns; list; list = list->next)
8497     {
8498       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8499         {
8500           _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
8501           break;
8502         }
8503     }
8504
8505   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8506 }
8507
8508 static GtkWidgetPath *
8509 gtk_tree_view_get_path_for_child (GtkContainer *container,
8510                                   GtkWidget    *child)
8511 {
8512   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8513   GtkWidgetPath *path;
8514   gboolean rtl;
8515   GList *list, *visible_columns = NULL;
8516   gint n_col = 0;
8517
8518   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8519   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8520
8521   for (list = tree_view->priv->columns; list; list = list->next)
8522     {
8523       GtkTreeViewColumn *column = list->data;
8524
8525       if (gtk_tree_view_column_get_visible (column))
8526         visible_columns = g_list_prepend (visible_columns, column);
8527     }
8528
8529   if (!rtl)
8530     visible_columns = g_list_reverse (visible_columns);
8531
8532   for (list = visible_columns; list != NULL; list = list->next)
8533     {
8534       GtkTreeViewColumn *column = list->data;
8535       GtkRegionFlags flags = 0;
8536
8537       n_col++;
8538
8539       if (gtk_tree_view_column_get_widget (column) != child &&
8540           gtk_tree_view_column_get_button (column) != child)
8541         continue;
8542
8543       if ((n_col % 2) == 0)
8544         flags |= GTK_REGION_EVEN;
8545       else
8546         flags |= GTK_REGION_ODD;
8547
8548       if (n_col == 1)
8549         flags |= GTK_REGION_FIRST;
8550
8551       if (!list->next)
8552         flags |= GTK_REGION_LAST;
8553
8554       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8555       break;
8556     }
8557   g_list_free (visible_columns);
8558
8559   gtk_widget_path_append_for_widget (path, child);
8560
8561   return path;
8562 }
8563
8564 static gboolean
8565 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8566                                 GtkMovementStep    step,
8567                                 gint               count)
8568 {
8569   GdkModifierType state;
8570
8571   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8572   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8573                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8574                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8575                         step == GTK_MOVEMENT_PAGES ||
8576                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8577
8578   if (tree_view->priv->tree == NULL)
8579     return FALSE;
8580   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8581     return FALSE;
8582
8583   gtk_tree_view_stop_editing (tree_view, FALSE);
8584   tree_view->priv->draw_keyfocus = TRUE;
8585   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8586
8587   if (gtk_get_current_event_state (&state))
8588     {
8589       GdkModifierType extend_mod_mask;
8590       GdkModifierType modify_mod_mask;
8591
8592       extend_mod_mask =
8593         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8594                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8595
8596       modify_mod_mask =
8597         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8598                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8599
8600       if ((state & modify_mod_mask) == modify_mod_mask)
8601         tree_view->priv->modify_selection_pressed = TRUE;
8602       if ((state & extend_mod_mask) == extend_mod_mask)
8603         tree_view->priv->extend_selection_pressed = TRUE;
8604     }
8605   /* else we assume not pressed */
8606
8607   switch (step)
8608     {
8609       /* currently we make no distinction.  When we go bi-di, we need to */
8610     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8611     case GTK_MOVEMENT_VISUAL_POSITIONS:
8612       gtk_tree_view_move_cursor_left_right (tree_view, count);
8613       break;
8614     case GTK_MOVEMENT_DISPLAY_LINES:
8615       gtk_tree_view_move_cursor_up_down (tree_view, count);
8616       break;
8617     case GTK_MOVEMENT_PAGES:
8618       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8619       break;
8620     case GTK_MOVEMENT_BUFFER_ENDS:
8621       gtk_tree_view_move_cursor_start_end (tree_view, count);
8622       break;
8623     default:
8624       g_assert_not_reached ();
8625     }
8626
8627   tree_view->priv->modify_selection_pressed = FALSE;
8628   tree_view->priv->extend_selection_pressed = FALSE;
8629
8630   return TRUE;
8631 }
8632
8633 static void
8634 gtk_tree_view_put (GtkTreeView *tree_view,
8635                    GtkWidget   *child_widget,
8636                    /* in bin_window coordinates */
8637                    gint         x,
8638                    gint         y,
8639                    gint         width,
8640                    gint         height)
8641 {
8642   GtkTreeViewChild *child;
8643
8644   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8645   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8646
8647   child = g_slice_new (GtkTreeViewChild);
8648
8649   child->widget = child_widget;
8650   child->x = x;
8651   child->y = y;
8652   child->width = width;
8653   child->height = height;
8654
8655   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8656
8657   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8658     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8659
8660   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8661 }
8662
8663 void
8664 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8665                                   GtkWidget   *widget,
8666                                   /* in tree coordinates */
8667                                   gint         x,
8668                                   gint         y,
8669                                   gint         width,
8670                                   gint         height)
8671 {
8672   GtkTreeViewChild *child = NULL;
8673   GList *list;
8674   GdkRectangle allocation;
8675
8676   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8677   g_return_if_fail (GTK_IS_WIDGET (widget));
8678
8679   for (list = tree_view->priv->children; list; list = list->next)
8680     {
8681       if (((GtkTreeViewChild *)list->data)->widget == widget)
8682         {
8683           child = list->data;
8684           break;
8685         }
8686     }
8687   if (child == NULL)
8688     return;
8689
8690   allocation.x = child->x = x;
8691   allocation.y = child->y = y;
8692   allocation.width = child->width = width;
8693   allocation.height = child->height = height;
8694
8695   if (gtk_widget_get_realized (widget))
8696     gtk_widget_size_allocate (widget, &allocation);
8697 }
8698
8699
8700 /* TreeModel Callbacks
8701  */
8702
8703 static void
8704 gtk_tree_view_row_changed (GtkTreeModel *model,
8705                            GtkTreePath  *path,
8706                            GtkTreeIter  *iter,
8707                            gpointer      data)
8708 {
8709   GtkTreeView *tree_view = (GtkTreeView *)data;
8710   GtkRBTree *tree;
8711   GtkRBNode *node;
8712   gboolean free_path = FALSE;
8713   GList *list;
8714   GtkTreePath *cursor_path;
8715
8716   g_return_if_fail (path != NULL || iter != NULL);
8717
8718   if (tree_view->priv->cursor_node != NULL)
8719     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
8720                                                   tree_view->priv->cursor_node);
8721   else
8722     cursor_path = NULL;
8723
8724   if (tree_view->priv->edited_column &&
8725       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8726     gtk_tree_view_stop_editing (tree_view, TRUE);
8727
8728   if (cursor_path != NULL)
8729     gtk_tree_path_free (cursor_path);
8730
8731   if (path == NULL)
8732     {
8733       path = gtk_tree_model_get_path (model, iter);
8734       free_path = TRUE;
8735     }
8736   else if (iter == NULL)
8737     gtk_tree_model_get_iter (model, iter, path);
8738
8739   if (_gtk_tree_view_find_node (tree_view,
8740                                 path,
8741                                 &tree,
8742                                 &node))
8743     /* We aren't actually showing the node */
8744     goto done;
8745
8746   if (tree == NULL)
8747     goto done;
8748
8749   _gtk_tree_view_accessible_changed (tree_view, tree, node);
8750
8751   if (tree_view->priv->fixed_height_mode
8752       && tree_view->priv->fixed_height >= 0)
8753     {
8754       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8755       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8756         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8757     }
8758   else
8759     {
8760       _gtk_rbtree_node_mark_invalid (tree, node);
8761       for (list = tree_view->priv->columns; list; list = list->next)
8762         {
8763           GtkTreeViewColumn *column;
8764
8765           column = list->data;
8766           if (!gtk_tree_view_column_get_visible (column))
8767             continue;
8768
8769           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8770             {
8771               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8772             }
8773         }
8774     }
8775
8776  done:
8777   if (!tree_view->priv->fixed_height_mode &&
8778       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8779     install_presize_handler (tree_view);
8780   if (free_path)
8781     gtk_tree_path_free (path);
8782 }
8783
8784 static void
8785 gtk_tree_view_row_inserted (GtkTreeModel *model,
8786                             GtkTreePath  *path,
8787                             GtkTreeIter  *iter,
8788                             gpointer      data)
8789 {
8790   GtkTreeView *tree_view = (GtkTreeView *) data;
8791   gint *indices;
8792   GtkRBTree *tree;
8793   GtkRBNode *tmpnode = NULL;
8794   gint depth;
8795   gint i = 0;
8796   gint height;
8797   gboolean free_path = FALSE;
8798   gboolean node_visible = TRUE;
8799
8800   g_return_if_fail (path != NULL || iter != NULL);
8801
8802   if (tree_view->priv->fixed_height_mode
8803       && tree_view->priv->fixed_height >= 0)
8804     height = tree_view->priv->fixed_height;
8805   else
8806     height = 0;
8807
8808   if (path == NULL)
8809     {
8810       path = gtk_tree_model_get_path (model, iter);
8811       free_path = TRUE;
8812     }
8813   else if (iter == NULL)
8814     gtk_tree_model_get_iter (model, iter, path);
8815
8816   if (tree_view->priv->tree == NULL)
8817     tree_view->priv->tree = _gtk_rbtree_new ();
8818
8819   tree = tree_view->priv->tree;
8820
8821   /* Update all row-references */
8822   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8823   depth = gtk_tree_path_get_depth (path);
8824   indices = gtk_tree_path_get_indices (path);
8825
8826   /* First, find the parent tree */
8827   while (i < depth - 1)
8828     {
8829       if (tree == NULL)
8830         {
8831           /* We aren't showing the node */
8832           node_visible = FALSE;
8833           goto done;
8834         }
8835
8836       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8837       if (tmpnode == NULL)
8838         {
8839           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8840                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8841                      "before the parent was inserted.");
8842           goto done;
8843         }
8844       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8845         {
8846           /* FIXME enforce correct behavior on model, probably */
8847           /* In theory, the model should have emitted has_child_toggled here.  We
8848            * try to catch it anyway, just to be safe, in case the model hasn't.
8849            */
8850           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8851           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8852           gtk_tree_path_free (tmppath);
8853           goto done;
8854         }
8855
8856       tree = tmpnode->children;
8857       i++;
8858     }
8859
8860   if (tree == NULL)
8861     {
8862       node_visible = FALSE;
8863       goto done;
8864     }
8865
8866   /* ref the node */
8867   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8868   if (indices[depth - 1] == 0)
8869     {
8870       tmpnode = _gtk_rbtree_find_count (tree, 1);
8871       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8872     }
8873   else
8874     {
8875       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8876       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8877     }
8878
8879   _gtk_tree_view_accessible_add (tree_view, tree, tmpnode);
8880
8881  done:
8882   if (height > 0)
8883     {
8884       if (tree)
8885         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8886
8887       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8888         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8889       else
8890         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8891     }
8892   else
8893     install_presize_handler (tree_view);
8894   if (free_path)
8895     gtk_tree_path_free (path);
8896 }
8897
8898 static void
8899 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8900                                      GtkTreePath  *path,
8901                                      GtkTreeIter  *iter,
8902                                      gpointer      data)
8903 {
8904   GtkTreeView *tree_view = (GtkTreeView *)data;
8905   GtkTreeIter real_iter;
8906   gboolean has_child;
8907   GtkRBTree *tree;
8908   GtkRBNode *node;
8909   gboolean free_path = FALSE;
8910
8911   g_return_if_fail (path != NULL || iter != NULL);
8912
8913   if (iter)
8914     real_iter = *iter;
8915
8916   if (path == NULL)
8917     {
8918       path = gtk_tree_model_get_path (model, iter);
8919       free_path = TRUE;
8920     }
8921   else if (iter == NULL)
8922     gtk_tree_model_get_iter (model, &real_iter, path);
8923
8924   if (_gtk_tree_view_find_node (tree_view,
8925                                 path,
8926                                 &tree,
8927                                 &node))
8928     /* We aren't actually showing the node */
8929     goto done;
8930
8931   if (tree == NULL)
8932     goto done;
8933
8934   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8935   /* Sanity check.
8936    */
8937   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8938     goto done;
8939
8940   if (has_child)
8941     {
8942       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8943       _gtk_tree_view_accessible_add_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8944     }
8945   else
8946     {
8947       GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8948       _gtk_tree_view_accessible_remove_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8949     }
8950
8951   if (has_child && tree_view->priv->is_list)
8952     {
8953       tree_view->priv->is_list = FALSE;
8954       if (tree_view->priv->show_expanders)
8955         {
8956           GList *list;
8957
8958           for (list = tree_view->priv->columns; list; list = list->next)
8959             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8960               {
8961                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8962                 break;
8963               }
8964         }
8965       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8966     }
8967   else
8968     {
8969       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8970     }
8971
8972  done:
8973   if (free_path)
8974     gtk_tree_path_free (path);
8975 }
8976
8977 static void
8978 count_children_helper (GtkRBTree *tree,
8979                        GtkRBNode *node,
8980                        gpointer   data)
8981 {
8982   if (node->children)
8983     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8984   (*((gint *)data))++;
8985 }
8986
8987 static void
8988 check_selection_helper (GtkRBTree *tree,
8989                         GtkRBNode *node,
8990                         gpointer   data)
8991 {
8992   gint *value = (gint *)data;
8993
8994   *value |= GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8995
8996   if (node->children && !*value)
8997     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8998 }
8999
9000 static void
9001 gtk_tree_view_row_deleted (GtkTreeModel *model,
9002                            GtkTreePath  *path,
9003                            gpointer      data)
9004 {
9005   GtkTreeView *tree_view = (GtkTreeView *)data;
9006   GtkRBTree *tree;
9007   GtkRBNode *node;
9008   GList *list;
9009   gboolean selection_changed = FALSE, cursor_changed = FALSE;
9010   GtkRBTree *cursor_tree = NULL;
9011   GtkRBNode *cursor_node = NULL;
9012   GtkStyleContext *context;
9013
9014   g_return_if_fail (path != NULL);
9015
9016   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9017
9018   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9019     return;
9020
9021   if (tree == NULL)
9022     return;
9023
9024   /* check if the selection has been changed */
9025   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9026                         check_selection_helper, &selection_changed);
9027
9028   for (list = tree_view->priv->columns; list; list = list->next)
9029     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9030         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9031       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9032
9033   /* Ensure we don't have a dangling pointer to a dead node */
9034   ensure_unprelighted (tree_view);
9035
9036   /* Cancel editting if we've started */
9037   gtk_tree_view_stop_editing (tree_view, TRUE);
9038
9039   /* If the cursor row got deleted, move the cursor to the next row */
9040   if (tree_view->priv->cursor_node &&
9041       (tree_view->priv->cursor_node == node ||
9042        (node->children && (tree_view->priv->cursor_tree == node->children ||
9043                            _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree)))))
9044     {
9045       GtkTreePath *cursor_path;
9046
9047       cursor_tree = tree;
9048       cursor_node = _gtk_rbtree_next (tree, node);
9049       /* find the first node that is not going to be deleted */
9050       while (cursor_node == NULL && cursor_tree->parent_tree)
9051         {
9052           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9053                                           cursor_tree->parent_node);
9054           cursor_tree = cursor_tree->parent_tree;
9055         }
9056
9057       if (cursor_node != NULL)
9058         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9059       else
9060         cursor_path = NULL;
9061
9062       if (cursor_path == NULL ||
9063           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9064                                          &cursor_tree, &cursor_node))
9065         {
9066           /* It looks like we reached the end of the view without finding
9067            * a focusable row.  We will step backwards to find the last
9068            * focusable row.
9069            */
9070           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9071           if (cursor_node)
9072             {
9073               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9074               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9075                                                  &cursor_tree, &cursor_node))
9076                 cursor_node = NULL;
9077               gtk_tree_path_free (cursor_path);
9078             }
9079         }
9080       else if (cursor_path)
9081         gtk_tree_path_free (cursor_path);
9082
9083       cursor_changed = TRUE;
9084     }
9085
9086   if (tree_view->priv->destroy_count_func)
9087     {
9088       gint child_count = 0;
9089       if (node->children)
9090         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9091       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9092     }
9093
9094   if (tree->root->count == 1)
9095     {
9096       if (tree_view->priv->tree == tree)
9097         tree_view->priv->tree = NULL;
9098
9099       _gtk_tree_view_accessible_remove_state (tree_view,
9100                                               tree->parent_tree, tree->parent_node,
9101                                               GTK_CELL_RENDERER_EXPANDED);
9102       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9103       _gtk_rbtree_remove (tree);
9104     }
9105   else
9106     {
9107       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9108       _gtk_rbtree_remove_node (tree, node);
9109     }
9110
9111   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9112     {
9113       gtk_tree_row_reference_free (tree_view->priv->top_row);
9114       tree_view->priv->top_row = NULL;
9115     }
9116
9117   /* Cancel any ongoing animation happening within the row */
9118   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9119   gtk_style_context_cancel_animations (context, node);
9120
9121   install_scroll_sync_handler (tree_view);
9122
9123   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9124
9125   if (cursor_changed)
9126     {
9127       if (cursor_node)
9128         {
9129           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9130           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9131           gtk_tree_path_free (cursor_path);
9132         }
9133       else
9134         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9135     }
9136   if (selection_changed)
9137     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9138 }
9139
9140 static void
9141 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9142                               GtkTreePath  *parent,
9143                               GtkTreeIter  *iter,
9144                               gint         *new_order,
9145                               gpointer      data)
9146 {
9147   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9148   GtkRBTree *tree;
9149   GtkRBNode *node;
9150   gint len;
9151
9152   len = gtk_tree_model_iter_n_children (model, iter);
9153
9154   if (len < 2)
9155     return;
9156
9157   gtk_tree_row_reference_reordered (G_OBJECT (data),
9158                                     parent,
9159                                     iter,
9160                                     new_order);
9161
9162   if (_gtk_tree_view_find_node (tree_view,
9163                                 parent,
9164                                 &tree,
9165                                 &node))
9166     return;
9167
9168   /* We need to special case the parent path */
9169   if (tree == NULL)
9170     tree = tree_view->priv->tree;
9171   else
9172     tree = node->children;
9173
9174   if (tree == NULL)
9175     return;
9176
9177   if (tree_view->priv->edited_column)
9178     gtk_tree_view_stop_editing (tree_view, TRUE);
9179
9180   /* we need to be unprelighted */
9181   ensure_unprelighted (tree_view);
9182
9183   _gtk_rbtree_reorder (tree, new_order, len);
9184
9185   _gtk_tree_view_accessible_reorder (tree_view);
9186
9187   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9188
9189   gtk_tree_view_dy_to_top_row (tree_view);
9190 }
9191
9192
9193 /* Internal tree functions
9194  */
9195
9196
9197 static void
9198 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9199                                      GtkRBTree         *tree,
9200                                      GtkTreeViewColumn *column,
9201                                      gint              *x1,
9202                                      gint              *x2)
9203 {
9204   GtkTreeViewColumn *tmp_column = NULL;
9205   gint total_width;
9206   GList *list;
9207   gboolean rtl;
9208
9209   if (x1)
9210     *x1 = 0;
9211
9212   if (x2)
9213     *x2 = 0;
9214
9215   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9216
9217   total_width = 0;
9218   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9219        list;
9220        list = (rtl ? list->prev : list->next))
9221     {
9222       tmp_column = list->data;
9223
9224       if (tmp_column == column)
9225         break;
9226
9227       if (gtk_tree_view_column_get_visible (tmp_column))
9228         total_width += gtk_tree_view_column_get_width (tmp_column);
9229     }
9230
9231   if (tmp_column != column)
9232     {
9233       g_warning (G_STRLOC": passed-in column isn't in the tree");
9234       return;
9235     }
9236
9237   if (x1)
9238     *x1 = total_width;
9239
9240   if (x2)
9241     {
9242       if (gtk_tree_view_column_get_visible (column))
9243         *x2 = total_width + gtk_tree_view_column_get_width (column);
9244       else
9245         *x2 = total_width; /* width of 0 */
9246     }
9247 }
9248
9249 static void
9250 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9251                                 GtkRBTree   *tree,
9252                                 gint        *x1,
9253                                 gint        *x2)
9254 {
9255   gint x_offset = 0;
9256   GList *list;
9257   GtkTreeViewColumn *tmp_column = NULL;
9258   gint total_width;
9259   gint expander_size;
9260   gboolean indent_expanders;
9261   gboolean rtl;
9262
9263   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9264   expander_size = gtk_tree_view_get_expander_size (tree_view);
9265
9266   total_width = 0;
9267   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9268        list;
9269        list = (rtl ? list->prev : list->next))
9270     {
9271       tmp_column = list->data;
9272
9273       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9274         {
9275           if (rtl)
9276             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - expander_size;
9277           else
9278             x_offset = total_width;
9279           break;
9280         }
9281
9282       if (gtk_tree_view_column_get_visible (tmp_column))
9283         total_width += gtk_tree_view_column_get_width (tmp_column);
9284     }
9285
9286   gtk_widget_style_get (GTK_WIDGET (tree_view),
9287                         "indent-expanders", &indent_expanders,
9288                         NULL);
9289
9290   if (indent_expanders)
9291     {
9292       if (rtl)
9293         x_offset -= expander_size * _gtk_rbtree_get_depth (tree);
9294       else
9295         x_offset += expander_size * _gtk_rbtree_get_depth (tree);
9296     }
9297
9298   *x1 = x_offset;
9299
9300   if (tmp_column &&
9301       gtk_tree_view_column_get_visible (tmp_column))
9302     /* +1 because x2 isn't included in the range. */
9303     *x2 = *x1 + expander_size + 1;
9304   else
9305     *x2 = *x1;
9306 }
9307
9308 static void
9309 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9310                           GtkRBTree   *tree,
9311                           GtkTreeIter *iter,
9312                           gint         depth,
9313                           gboolean     recurse)
9314 {
9315   GtkRBNode *temp = NULL;
9316   GtkTreePath *path = NULL;
9317
9318   do
9319     {
9320       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9321       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9322
9323       if (tree_view->priv->fixed_height > 0)
9324         {
9325           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9326             {
9327               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9328               _gtk_rbtree_node_mark_valid (tree, temp);
9329             }
9330         }
9331
9332       if (tree_view->priv->is_list)
9333         continue;
9334
9335       if (recurse)
9336         {
9337           GtkTreeIter child;
9338
9339           if (!path)
9340             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9341           else
9342             gtk_tree_path_next (path);
9343
9344           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9345             {
9346               gboolean expand;
9347
9348               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9349
9350               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9351                   && !expand)
9352                 {
9353                   temp->children = _gtk_rbtree_new ();
9354                   temp->children->parent_tree = tree;
9355                   temp->children->parent_node = temp;
9356                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9357                 }
9358             }
9359         }
9360
9361       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9362         {
9363           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9364             temp->flags ^= GTK_RBNODE_IS_PARENT;
9365         }
9366     }
9367   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9368
9369   if (path)
9370     gtk_tree_path_free (path);
9371 }
9372
9373 /* Make sure the node is visible vertically */
9374 static void
9375 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9376                                   GtkRBTree   *tree,
9377                                   GtkRBNode   *node)
9378 {
9379   gint node_dy, height;
9380   GtkTreePath *path = NULL;
9381
9382   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9383     return;
9384
9385   /* just return if the node is visible, avoiding a costly expose */
9386   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9387   height = gtk_tree_view_get_row_height (tree_view, node);
9388   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9389       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9390       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9391                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9392     return;
9393
9394   path = _gtk_tree_path_new_from_rbtree (tree, node);
9395   if (path)
9396     {
9397       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9398       gtk_tree_path_free (path);
9399     }
9400 }
9401
9402 static void
9403 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9404                                     GtkTreeViewColumn *column,
9405                                     gboolean           focus_to_cell)
9406 {
9407   GtkAllocation allocation;
9408   gint x, width;
9409
9410   if (column == NULL)
9411     return;
9412
9413   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9414   x = allocation.x;
9415   width = allocation.width;
9416
9417   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9418     {
9419       /* The column is larger than the horizontal page size.  If the
9420        * column has cells which can be focussed individually, then we make
9421        * sure the cell which gets focus is fully visible (if even the
9422        * focus cell is bigger than the page size, we make sure the
9423        * left-hand side of the cell is visible).
9424        *
9425        * If the column does not have an activatable cell, we
9426        * make sure the left-hand side of the column is visible.
9427        */
9428
9429       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9430         {
9431           GtkCellArea *cell_area;
9432           GtkCellRenderer *focus_cell;
9433
9434           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9435           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9436
9437           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9438                                                       &x, &width))
9439             {
9440               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9441                 {
9442                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9443                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9444                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9445                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9446                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9447                 }
9448             }
9449         }
9450
9451       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9452     }
9453   else
9454     {
9455       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9456           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9457                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9458       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9459         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9460   }
9461 }
9462
9463 /* This function could be more efficient.  I'll optimize it if profiling seems
9464  * to imply that it is important */
9465 GtkTreePath *
9466 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9467                                 GtkRBNode   *node)
9468 {
9469   GtkTreePath *path;
9470   GtkRBTree *tmp_tree;
9471   GtkRBNode *tmp_node, *last;
9472   gint count;
9473
9474   path = gtk_tree_path_new ();
9475
9476   g_return_val_if_fail (node != NULL, path);
9477
9478   count = 1 + node->left->count;
9479
9480   last = node;
9481   tmp_node = node->parent;
9482   tmp_tree = tree;
9483   while (tmp_tree)
9484     {
9485       while (!_gtk_rbtree_is_nil (tmp_node))
9486         {
9487           if (tmp_node->right == last)
9488             count += 1 + tmp_node->left->count;
9489           last = tmp_node;
9490           tmp_node = tmp_node->parent;
9491         }
9492       gtk_tree_path_prepend_index (path, count - 1);
9493       last = tmp_tree->parent_node;
9494       tmp_tree = tmp_tree->parent_tree;
9495       if (last)
9496         {
9497           count = 1 + last->left->count;
9498           tmp_node = last->parent;
9499         }
9500     }
9501   return path;
9502 }
9503
9504 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9505  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9506  * both set to NULL.
9507  */
9508 gboolean
9509 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9510                           GtkTreePath  *path,
9511                           GtkRBTree   **tree,
9512                           GtkRBNode   **node)
9513 {
9514   GtkRBNode *tmpnode = NULL;
9515   GtkRBTree *tmptree = tree_view->priv->tree;
9516   gint *indices = gtk_tree_path_get_indices (path);
9517   gint depth = gtk_tree_path_get_depth (path);
9518   gint i = 0;
9519
9520   *node = NULL;
9521   *tree = NULL;
9522
9523   if (depth == 0 || tmptree == NULL)
9524     return FALSE;
9525   do
9526     {
9527       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9528       ++i;
9529       if (tmpnode == NULL)
9530         {
9531           *tree = NULL;
9532           *node = NULL;
9533           return FALSE;
9534         }
9535       if (i >= depth)
9536         {
9537           *tree = tmptree;
9538           *node = tmpnode;
9539           return FALSE;
9540         }
9541       *tree = tmptree;
9542       *node = tmpnode;
9543       tmptree = tmpnode->children;
9544       if (tmptree == NULL)
9545         return TRUE;
9546     }
9547   while (1);
9548 }
9549
9550 static gboolean
9551 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9552                                   GtkTreeViewColumn *column)
9553 {
9554   GList *list;
9555
9556   if (tree_view->priv->is_list)
9557     return FALSE;
9558
9559   if (tree_view->priv->expander_column != NULL)
9560     {
9561       if (tree_view->priv->expander_column == column)
9562         return TRUE;
9563       return FALSE;
9564     }
9565   else
9566     {
9567       for (list = tree_view->priv->columns;
9568            list;
9569            list = list->next)
9570         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9571           break;
9572       if (list && list->data == column)
9573         return TRUE;
9574     }
9575   return FALSE;
9576 }
9577
9578 static inline gboolean
9579 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9580 {
9581   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9582     return TRUE;
9583   /* else */
9584   return FALSE;
9585 }
9586
9587 static void
9588 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9589                                 guint           keyval,
9590                                 guint           modmask,
9591                                 gboolean        add_shifted_binding,
9592                                 GtkMovementStep step,
9593                                 gint            count)
9594 {
9595
9596   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9597                                 "move-cursor", 2,
9598                                 G_TYPE_ENUM, step,
9599                                 G_TYPE_INT, count);
9600
9601   if (add_shifted_binding)
9602     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9603                                   "move-cursor", 2,
9604                                   G_TYPE_ENUM, step,
9605                                   G_TYPE_INT, count);
9606
9607   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9608    return;
9609
9610   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9611                                 "move-cursor", 2,
9612                                 G_TYPE_ENUM, step,
9613                                 G_TYPE_INT, count);
9614
9615   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9616                                 "move-cursor", 2,
9617                                 G_TYPE_ENUM, step,
9618                                 G_TYPE_INT, count);
9619 }
9620
9621 static gint
9622 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9623                                  GtkTreeIter  *iter,
9624                                  GtkRBTree    *tree,
9625                                  GtkRBNode    *node)
9626 {
9627   gint retval = FALSE;
9628   do
9629     {
9630       g_return_val_if_fail (node != NULL, FALSE);
9631
9632       if (node->children)
9633         {
9634           GtkTreeIter child;
9635           GtkRBTree *new_tree;
9636           GtkRBNode *new_node;
9637
9638           new_tree = node->children;
9639           new_node = _gtk_rbtree_first (new_tree);
9640
9641           if (!gtk_tree_model_iter_children (model, &child, iter))
9642             return FALSE;
9643
9644           retval = gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node) | retval;
9645         }
9646
9647       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9648         retval = TRUE;
9649       gtk_tree_model_unref_node (model, iter);
9650       node = _gtk_rbtree_next (tree, node);
9651     }
9652   while (gtk_tree_model_iter_next (model, iter));
9653
9654   return retval;
9655 }
9656
9657 static gint
9658 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9659                                               GtkRBTree   *tree)
9660 {
9661   GtkTreeIter iter;
9662   GtkTreePath *path;
9663   GtkRBNode *node;
9664   gint retval;
9665
9666   if (!tree)
9667     return FALSE;
9668
9669   node = _gtk_rbtree_first (tree);
9670
9671   g_return_val_if_fail (node != NULL, FALSE);
9672   path = _gtk_tree_path_new_from_rbtree (tree, node);
9673   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9674                            &iter, path);
9675   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9676   gtk_tree_path_free (path);
9677
9678   return retval;
9679 }
9680
9681 static void
9682 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9683                                     GtkTreeViewColumn *column)
9684 {
9685   GtkTreeViewColumn *left_column;
9686   GtkTreeViewColumn *cur_column = NULL;
9687   GtkTreeViewColumnReorder *reorder;
9688   gboolean rtl;
9689   GList *tmp_list;
9690   gint left;
9691
9692   /* We want to precalculate the motion list such that we know what column slots
9693    * are available.
9694    */
9695   left_column = NULL;
9696   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9697
9698   /* First, identify all possible drop spots */
9699   if (rtl)
9700     tmp_list = g_list_last (tree_view->priv->columns);
9701   else
9702     tmp_list = g_list_first (tree_view->priv->columns);
9703
9704   while (tmp_list)
9705     {
9706       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9707       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9708
9709       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9710         continue;
9711
9712       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9713       if (left_column != column && cur_column != column &&
9714           tree_view->priv->column_drop_func &&
9715           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9716         {
9717           left_column = cur_column;
9718           continue;
9719         }
9720       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9721       reorder->left_column = left_column;
9722       left_column = reorder->right_column = cur_column;
9723
9724       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9725     }
9726
9727   /* Add the last one */
9728   if (tree_view->priv->column_drop_func == NULL ||
9729       ((left_column != column) &&
9730        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9731     {
9732       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9733       reorder->left_column = left_column;
9734       reorder->right_column = NULL;
9735       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9736     }
9737
9738   /* We quickly check to see if it even makes sense to reorder columns. */
9739   /* If there is nothing that can be moved, then we return */
9740
9741   if (tree_view->priv->column_drag_info == NULL)
9742     return;
9743
9744   /* We know there are always 2 slots possbile, as you can always return column. */
9745   /* If that's all there is, return */
9746   if (tree_view->priv->column_drag_info->next == NULL ||
9747       (tree_view->priv->column_drag_info->next->next == NULL &&
9748        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9749        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9750     {
9751       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9752         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9753       g_list_free (tree_view->priv->column_drag_info);
9754       tree_view->priv->column_drag_info = NULL;
9755       return;
9756     }
9757   /* We fill in the ranges for the columns, now that we've isolated them */
9758   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9759
9760   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9761     {
9762       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9763
9764       reorder->left_align = left;
9765       if (tmp_list->next != NULL)
9766         {
9767           GtkAllocation right_allocation, left_allocation;
9768           GtkWidget    *left_button, *right_button;
9769
9770           g_assert (tmp_list->next->data);
9771
9772           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9773           left_button  = gtk_tree_view_column_get_button
9774             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9775
9776           gtk_widget_get_allocation (right_button, &right_allocation);
9777           gtk_widget_get_allocation (left_button, &left_allocation);
9778           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9779         }
9780       else
9781         {
9782           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9783                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9784         }
9785     }
9786 }
9787
9788 void
9789 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9790                                   GtkTreeViewColumn *column,
9791                                   GdkDevice         *device)
9792 {
9793   GdkEvent *send_event;
9794   GtkAllocation allocation;
9795   GtkAllocation button_allocation;
9796   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9797   GtkWidget *button;
9798   GdkDevice *pointer, *keyboard;
9799
9800   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9801   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9802
9803   gtk_tree_view_set_column_drag_info (tree_view, column);
9804
9805   if (tree_view->priv->column_drag_info == NULL)
9806     return;
9807
9808   button = gtk_tree_view_column_get_button (column);
9809
9810   if (tree_view->priv->drag_window == NULL)
9811     {
9812       GdkWindowAttr attributes;
9813       guint attributes_mask;
9814
9815       gtk_widget_get_allocation (button, &button_allocation);
9816
9817       attributes.window_type = GDK_WINDOW_CHILD;
9818       attributes.wclass = GDK_INPUT_OUTPUT;
9819       attributes.x = button_allocation.x;
9820       attributes.y = 0;
9821       attributes.width = button_allocation.width;
9822       attributes.height = button_allocation.height;
9823       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9824       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9825       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9826
9827       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9828                                                      &attributes,
9829                                                      attributes_mask);
9830       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9831     }
9832
9833   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9834     {
9835       keyboard = device;
9836       pointer = gdk_device_get_associated_device (device);
9837     }
9838   else
9839     {
9840       pointer = device;
9841       keyboard = gdk_device_get_associated_device (device);
9842     }
9843
9844   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9845   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9846
9847   gtk_grab_remove (button);
9848
9849   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9850   send_event->crossing.send_event = TRUE;
9851   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9852   send_event->crossing.subwindow = NULL;
9853   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9854   send_event->crossing.time = GDK_CURRENT_TIME;
9855   gdk_event_set_device (send_event, device);
9856
9857   gtk_propagate_event (button, send_event);
9858   gdk_event_free (send_event);
9859
9860   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9861   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9862   send_event->button.send_event = TRUE;
9863   send_event->button.time = GDK_CURRENT_TIME;
9864   send_event->button.x = -1;
9865   send_event->button.y = -1;
9866   send_event->button.axes = NULL;
9867   send_event->button.state = 0;
9868   send_event->button.button = GDK_BUTTON_PRIMARY;
9869   send_event->button.x_root = 0;
9870   send_event->button.y_root = 0;
9871   gdk_event_set_device (send_event, device);
9872
9873   gtk_propagate_event (button, send_event);
9874   gdk_event_free (send_event);
9875
9876   /* Kids, don't try this at home */
9877   g_object_ref (button);
9878   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9879   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9880   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9881   g_object_unref (button);
9882
9883   gtk_widget_get_allocation (button, &button_allocation);
9884   tree_view->priv->drag_column_x = button_allocation.x;
9885   allocation = button_allocation;
9886   allocation.x = 0;
9887   gtk_widget_size_allocate (button, &allocation);
9888   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9889
9890   tree_view->priv->drag_column = column;
9891   gdk_window_show (tree_view->priv->drag_window);
9892
9893   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9894   while (gtk_events_pending ())
9895     gtk_main_iteration ();
9896
9897   tree_view->priv->in_column_drag = TRUE;
9898
9899   gdk_device_grab (pointer,
9900                    tree_view->priv->drag_window,
9901                    GDK_OWNERSHIP_NONE,
9902                    FALSE,
9903                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9904                    NULL,
9905                    GDK_CURRENT_TIME);
9906   gdk_device_grab (keyboard,
9907                    tree_view->priv->drag_window,
9908                    GDK_OWNERSHIP_NONE,
9909                    FALSE,
9910                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9911                    NULL,
9912                    GDK_CURRENT_TIME);
9913 }
9914
9915 static void
9916 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9917                                 GtkRBTree          *tree,
9918                                 GtkRBNode          *node)
9919 {
9920   GtkAllocation allocation;
9921   GdkRectangle rect;
9922
9923   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9924     return;
9925
9926   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9927   rect.x = 0;
9928   rect.width = gtk_tree_view_get_expander_size (tree_view);
9929   rect.width = MAX (rect.width, MAX (tree_view->priv->width, allocation.width));
9930
9931   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9932   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9933
9934   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9935 }
9936
9937 void
9938 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9939                                 GtkRBTree          *tree,
9940                                 GtkRBNode          *node,
9941                                 const GdkRectangle *clip_rect)
9942 {
9943   GtkAllocation allocation;
9944   GdkRectangle rect;
9945
9946   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9947     return;
9948
9949   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9950   rect.x = 0;
9951   rect.width = MAX (tree_view->priv->width, allocation.width);
9952
9953   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9954   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9955
9956   if (clip_rect)
9957     {
9958       GdkRectangle new_rect;
9959
9960       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9961
9962       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9963     }
9964   else
9965     {
9966       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9967     }
9968 }
9969
9970 static inline gint
9971 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9972 {
9973   if (tree_view->priv->headers_visible)
9974     return tree_view->priv->header_height;
9975   /* else */
9976   return 0;
9977 }
9978
9979 gint
9980 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9981 {
9982   return tree_view->priv->header_height;
9983 }
9984
9985 void
9986 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9987                                        GtkTreeViewRowSeparatorFunc *func,
9988                                        gpointer                    *data)
9989 {
9990   *func = tree_view->priv->row_separator_func;
9991   *data = tree_view->priv->row_separator_data;
9992 }
9993
9994 GtkTreePath *
9995 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9996 {
9997   if (tree_view->priv->anchor)
9998     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9999
10000   return NULL;
10001 }
10002
10003 void
10004 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
10005                                 GtkTreePath *anchor_path)
10006 {
10007   if (tree_view->priv->anchor)
10008     {
10009       gtk_tree_row_reference_free (tree_view->priv->anchor);
10010       tree_view->priv->anchor = NULL;
10011     }
10012
10013   if (anchor_path && tree_view->priv->model)
10014     tree_view->priv->anchor =
10015       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10016                                         tree_view->priv->model, anchor_path);
10017 }
10018
10019 GtkRBTree *
10020 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
10021 {
10022   return tree_view->priv->tree;
10023 }
10024
10025 gboolean
10026 _gtk_tree_view_get_cursor_node (GtkTreeView  *tree_view,
10027                                 GtkRBTree   **tree,
10028                                 GtkRBNode   **node)
10029 {
10030   GtkTreeViewPrivate *priv;
10031
10032   priv = tree_view->priv;
10033
10034   if (priv->cursor_node == NULL)
10035     return FALSE;
10036
10037   *tree = priv->cursor_tree;
10038   *node = priv->cursor_node;
10039
10040   return TRUE;
10041 }
10042
10043 GdkWindow *
10044 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10045 {
10046   return tree_view->priv->header_window;
10047 }
10048
10049 GtkTreeViewColumn *
10050 _gtk_tree_view_get_focus_column (GtkTreeView *tree_view)
10051 {
10052   return tree_view->priv->focus_column;
10053 }
10054
10055 void
10056 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10057                                  GtkTreeViewColumn *column)
10058 {
10059   GtkTreeViewColumn *old_column = tree_view->priv->focus_column;
10060
10061   if (old_column == column)
10062     return;
10063
10064   tree_view->priv->focus_column = column;
10065
10066   _gtk_tree_view_accessible_update_focus_column (tree_view,
10067                                                  old_column,
10068                                                  column);
10069 }
10070
10071
10072 static void
10073 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10074                                GtkTreePath        *path,
10075                                const GdkRectangle *clip_rect)
10076 {
10077   GtkRBTree *tree = NULL;
10078   GtkRBNode *node = NULL;
10079
10080   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10081
10082   if (tree)
10083     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10084 }
10085
10086 /* x and y are the mouse position
10087  */
10088 static void
10089 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10090                           cairo_t     *cr,
10091                           GtkRBTree   *tree,
10092                           GtkRBNode   *node)
10093 {
10094   GdkRectangle area;
10095   GtkStateFlags state = 0;
10096   GtkStyleContext *context;
10097   GtkWidget *widget;
10098   gint x_offset = 0;
10099   gint x2;
10100   gint vertical_separator;
10101   gint expander_size;
10102   GtkCellRendererState flags = 0;
10103
10104   widget = GTK_WIDGET (tree_view);
10105   context = gtk_widget_get_style_context (widget);
10106
10107   gtk_widget_style_get (widget,
10108                         "vertical-separator", &vertical_separator,
10109                         NULL);
10110   expander_size = gtk_tree_view_get_expander_size (tree_view) - EXPANDER_EXTRA_PADDING;
10111
10112   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10113     return;
10114
10115   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10116
10117   area.x = x_offset;
10118   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10119                                                  vertical_separator);
10120   area.width = expander_size;
10121   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10122                                                     vertical_separator);
10123
10124   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10125     flags |= GTK_CELL_RENDERER_SELECTED;
10126
10127   if (node == tree_view->priv->prelight_node &&
10128       tree_view->priv->arrow_prelit)
10129     flags |= GTK_CELL_RENDERER_PRELIT;
10130
10131   state = gtk_cell_renderer_get_state (NULL, widget, flags);
10132
10133   if (node->children != NULL)
10134     state |= GTK_STATE_FLAG_ACTIVE;
10135   else
10136     state &= ~(GTK_STATE_FLAG_ACTIVE);
10137
10138   gtk_style_context_save (context);
10139
10140   gtk_style_context_set_state (context, state);
10141   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10142
10143   gtk_style_context_push_animatable_region (context, node);
10144
10145   gtk_render_expander (context, cr,
10146                        area.x, area.y,
10147                        area.width, area.height);
10148
10149   gtk_style_context_pop_animatable_region (context);
10150   gtk_style_context_restore (context);
10151 }
10152
10153 static void
10154 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10155
10156 {
10157   GtkTreePath *cursor_path;
10158
10159   if ((tree_view->priv->tree == NULL) ||
10160       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10161     return;
10162
10163   cursor_path = NULL;
10164   if (tree_view->priv->cursor_node)
10165     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10166                                                   tree_view->priv->cursor_node);
10167
10168   if (cursor_path == NULL)
10169     {
10170       /* Consult the selection before defaulting to the
10171        * first focusable element
10172        */
10173       GList *selected_rows;
10174       GtkTreeModel *model;
10175       GtkTreeSelection *selection;
10176
10177       selection = gtk_tree_view_get_selection (tree_view);
10178       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10179
10180       if (selected_rows)
10181         {
10182           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10183           g_list_free_full (selected_rows, (GDestroyNotify) gtk_tree_path_free);
10184         }
10185       else
10186         {
10187           cursor_path = gtk_tree_path_new_first ();
10188           search_first_focusable_path (tree_view, &cursor_path,
10189                                        TRUE, NULL, NULL);
10190         }
10191
10192       if (cursor_path)
10193         {
10194           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10195             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10196           else
10197             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10198         }
10199     }
10200
10201   if (cursor_path)
10202     {
10203       tree_view->priv->draw_keyfocus = TRUE;
10204
10205       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10206       gtk_tree_path_free (cursor_path);
10207
10208       if (tree_view->priv->focus_column == NULL)
10209         {
10210           GList *list;
10211           for (list = tree_view->priv->columns; list; list = list->next)
10212             {
10213               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10214                 {
10215                   GtkCellArea *cell_area;
10216
10217                   _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
10218
10219                   /* This happens when the treeview initially grabs focus and there
10220                    * is no column in focus, here we explicitly focus into the first cell */
10221                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10222                   if (!gtk_cell_area_get_focus_cell (cell_area))
10223                     {
10224                       gboolean rtl;
10225
10226                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10227                       gtk_cell_area_focus (cell_area,
10228                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10229                     }
10230
10231                   break;
10232                 }
10233             }
10234         }
10235     }
10236 }
10237
10238 static void
10239 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10240                                    gint         count)
10241 {
10242   gint selection_count;
10243   GtkRBTree *new_cursor_tree = NULL;
10244   GtkRBNode *new_cursor_node = NULL;
10245   GtkTreePath *cursor_path = NULL;
10246   gboolean grab_focus = TRUE;
10247   gboolean selectable;
10248   GtkDirectionType direction;
10249   GtkCellArea *cell_area = NULL;
10250   GtkCellRenderer *last_focus_cell = NULL;
10251   GtkTreeIter iter;
10252
10253   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10254     return;
10255
10256   if (tree_view->priv->cursor_node == NULL)
10257     return;
10258
10259   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10260                                                 tree_view->priv->cursor_node);
10261
10262   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10263
10264   if (tree_view->priv->focus_column)
10265     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10266
10267   /* If focus stays in the area for this row, then just return for this round */
10268   if (cell_area && (count == -1 || count == 1) &&
10269       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10270     {
10271       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10272                                                tree_view->priv->model,
10273                                                &iter,
10274                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10275                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10276
10277       /* Save the last cell that had focus, if we hit the end of the view we'll give
10278        * focus back to it. */
10279       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10280
10281       /* If focus stays in the area, no need to change the cursor row */
10282       if (gtk_cell_area_focus (cell_area, direction))
10283         return;
10284     }
10285
10286   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10287   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10288                                                       tree_view->priv->cursor_node,
10289                                                       cursor_path);
10290
10291   if (selection_count == 0
10292       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10293       && !tree_view->priv->modify_selection_pressed
10294       && selectable)
10295     {
10296       /* Don't move the cursor, but just select the current node */
10297       new_cursor_tree = tree_view->priv->cursor_tree;
10298       new_cursor_node = tree_view->priv->cursor_node;
10299     }
10300   else
10301     {
10302       if (count == -1)
10303         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10304                                &new_cursor_tree, &new_cursor_node);
10305       else
10306         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10307                                &new_cursor_tree, &new_cursor_node);
10308     }
10309
10310   gtk_tree_path_free (cursor_path);
10311
10312   if (new_cursor_node)
10313     {
10314       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10315
10316       search_first_focusable_path (tree_view, &cursor_path,
10317                                    (count != -1),
10318                                    &new_cursor_tree,
10319                                    &new_cursor_node);
10320
10321       if (cursor_path)
10322         gtk_tree_path_free (cursor_path);
10323     }
10324
10325   /*
10326    * If the list has only one item and multi-selection is set then select
10327    * the row (if not yet selected).
10328    */
10329   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10330       new_cursor_node == NULL)
10331     {
10332       if (count == -1)
10333         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10334                                &new_cursor_tree, &new_cursor_node);
10335       else
10336         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10337                                &new_cursor_tree, &new_cursor_node);
10338
10339       if (new_cursor_node == NULL
10340           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10341         {
10342           new_cursor_node = tree_view->priv->cursor_node;
10343           new_cursor_tree = tree_view->priv->cursor_tree;
10344         }
10345       else
10346         {
10347           new_cursor_tree = NULL;
10348           new_cursor_node = NULL;
10349         }
10350     }
10351
10352   if (new_cursor_node)
10353     {
10354       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10355       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10356       gtk_tree_path_free (cursor_path);
10357
10358       /* Give focus to the area in the new row */
10359       if (cell_area)
10360         gtk_cell_area_focus (cell_area, direction);
10361     }
10362   else
10363     {
10364       gtk_tree_view_clamp_node_visible (tree_view,
10365                                         tree_view->priv->cursor_tree,
10366                                         tree_view->priv->cursor_node);
10367
10368       if (!tree_view->priv->extend_selection_pressed)
10369         {
10370           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10371                                           count < 0 ?
10372                                           GTK_DIR_UP : GTK_DIR_DOWN))
10373             {
10374               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10375
10376               if (toplevel)
10377                 gtk_widget_child_focus (toplevel,
10378                                         count < 0 ?
10379                                         GTK_DIR_TAB_BACKWARD :
10380                                         GTK_DIR_TAB_FORWARD);
10381
10382               grab_focus = FALSE;
10383             }
10384         }
10385       else
10386         {
10387           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10388         }
10389
10390       if (cell_area)
10391         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10392     }
10393
10394   if (grab_focus)
10395     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10396 }
10397
10398 static void
10399 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10400                                         gint         count)
10401 {
10402   GtkTreePath *old_cursor_path = NULL;
10403   GtkTreePath *cursor_path = NULL;
10404   GtkRBTree *start_cursor_tree = NULL;
10405   GtkRBNode *start_cursor_node = NULL;
10406   GtkRBTree *cursor_tree;
10407   GtkRBNode *cursor_node;
10408   gint y;
10409   gint window_y;
10410   gint vertical_separator;
10411
10412   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10413     return;
10414
10415   if (tree_view->priv->cursor_node == NULL)
10416     return;
10417
10418   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10419                                                     tree_view->priv->cursor_node);
10420
10421   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10422
10423   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10424   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10425   y += tree_view->priv->cursor_offset;
10426   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10427   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10428
10429   if (y >= tree_view->priv->height)
10430     y = tree_view->priv->height - 1;
10431
10432   tree_view->priv->cursor_offset =
10433     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10434                              &cursor_tree, &cursor_node);
10435
10436   if (cursor_tree == NULL)
10437     {
10438       /* FIXME: we lost the cursor.  Should we try to get one? */
10439       gtk_tree_path_free (old_cursor_path);
10440       return;
10441     }
10442
10443   if (tree_view->priv->cursor_offset
10444       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10445     {
10446       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10447                              &cursor_tree, &cursor_node);
10448       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10449     }
10450
10451   y -= tree_view->priv->cursor_offset;
10452   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10453
10454   start_cursor_tree = cursor_tree;
10455   start_cursor_node = cursor_node;
10456
10457   if (! search_first_focusable_path (tree_view, &cursor_path,
10458                                      (count != -1),
10459                                      &cursor_tree, &cursor_node))
10460     {
10461       /* It looks like we reached the end of the view without finding
10462        * a focusable row.  We will step backwards to find the last
10463        * focusable row.
10464        */
10465       cursor_tree = start_cursor_tree;
10466       cursor_node = start_cursor_node;
10467       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10468
10469       search_first_focusable_path (tree_view, &cursor_path,
10470                                    (count == -1),
10471                                    &cursor_tree, &cursor_node);
10472     }
10473
10474   if (!cursor_path)
10475     goto cleanup;
10476
10477   /* update y */
10478   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10479
10480   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10481
10482   y -= window_y;
10483   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10484   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10485   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10486
10487   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10488     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10489
10490   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10491
10492 cleanup:
10493   gtk_tree_path_free (old_cursor_path);
10494   gtk_tree_path_free (cursor_path);
10495 }
10496
10497 static void
10498 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10499                                       gint         count)
10500 {
10501   GtkTreePath *cursor_path = NULL;
10502   GtkTreeViewColumn *column;
10503   GtkTreeIter iter;
10504   GList *list;
10505   gboolean found_column = FALSE;
10506   gboolean rtl;
10507   GtkDirectionType direction;
10508   GtkCellArea     *cell_area;
10509   GtkCellRenderer *last_focus_cell = NULL;
10510   GtkCellArea     *last_focus_area = NULL;
10511
10512   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10513
10514   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10515     return;
10516
10517   if (tree_view->priv->cursor_node == NULL)
10518     return;
10519
10520   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10521                                                 tree_view->priv->cursor_node);
10522
10523   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10524     {
10525       gtk_tree_path_free (cursor_path);
10526       return;
10527     }
10528   gtk_tree_path_free (cursor_path);
10529
10530   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10531   if (tree_view->priv->focus_column)
10532     {
10533       /* Save the cell/area we are moving focus from, if moving the cursor
10534        * by one step hits the end we'll set focus back here */
10535       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10536       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10537
10538       for (; list; list = (rtl ? list->prev : list->next))
10539         {
10540           if (list->data == tree_view->priv->focus_column)
10541             break;
10542         }
10543     }
10544
10545   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10546
10547   while (list)
10548     {
10549       column = list->data;
10550       if (gtk_tree_view_column_get_visible (column) == FALSE)
10551         goto loop_end;
10552
10553       gtk_tree_view_column_cell_set_cell_data (column,
10554                                                tree_view->priv->model,
10555                                                &iter,
10556                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10557                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10558
10559       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10560       if (gtk_cell_area_focus (cell_area, direction))
10561         {
10562           _gtk_tree_view_set_focus_column (tree_view, column);
10563           found_column = TRUE;
10564           break;
10565         }
10566
10567     loop_end:
10568       if (count == 1)
10569         list = rtl ? list->prev : list->next;
10570       else
10571         list = rtl ? list->next : list->prev;
10572     }
10573
10574   if (found_column)
10575     {
10576       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10577         _gtk_tree_view_queue_draw_node (tree_view,
10578                                         tree_view->priv->cursor_tree,
10579                                         tree_view->priv->cursor_node,
10580                                         NULL);
10581       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10582       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10583     }
10584   else
10585     {
10586       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10587
10588       if (last_focus_area)
10589         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10590     }
10591
10592   gtk_tree_view_clamp_column_visible (tree_view,
10593                                       tree_view->priv->focus_column, TRUE);
10594 }
10595
10596 static void
10597 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10598                                      gint         count)
10599 {
10600   GtkRBTree *cursor_tree;
10601   GtkRBNode *cursor_node;
10602   GtkTreePath *path;
10603   GtkTreePath *old_path;
10604
10605   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10606     return;
10607
10608   g_return_if_fail (tree_view->priv->tree != NULL);
10609
10610   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10611
10612   cursor_tree = tree_view->priv->tree;
10613
10614   if (count == -1)
10615     {
10616       cursor_node = _gtk_rbtree_first (cursor_tree);
10617
10618       /* Now go forward to find the first focusable row. */
10619       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10620       search_first_focusable_path (tree_view, &path,
10621                                    TRUE, &cursor_tree, &cursor_node);
10622     }
10623   else
10624     {
10625       cursor_node = cursor_tree->root;
10626
10627       do
10628         {
10629           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10630             cursor_node = cursor_node->right;
10631           if (cursor_node->children == NULL)
10632             break;
10633
10634           cursor_tree = cursor_node->children;
10635           cursor_node = cursor_tree->root;
10636         }
10637       while (1);
10638
10639       /* Now go backwards to find last focusable row. */
10640       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10641       search_first_focusable_path (tree_view, &path,
10642                                    FALSE, &cursor_tree, &cursor_node);
10643     }
10644
10645   if (!path)
10646     goto cleanup;
10647
10648   if (gtk_tree_path_compare (old_path, path))
10649     {
10650       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10651       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10652     }
10653   else
10654     {
10655       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10656     }
10657
10658 cleanup:
10659   gtk_tree_path_free (old_path);
10660   gtk_tree_path_free (path);
10661 }
10662
10663 static gboolean
10664 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10665 {
10666   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10667     return FALSE;
10668
10669   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10670     return FALSE;
10671
10672   gtk_tree_selection_select_all (tree_view->priv->selection);
10673
10674   return TRUE;
10675 }
10676
10677 static gboolean
10678 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10679 {
10680   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10681     return FALSE;
10682
10683   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10684     return FALSE;
10685
10686   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10687
10688   return TRUE;
10689 }
10690
10691 static gboolean
10692 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10693                                       gboolean     start_editing)
10694 {
10695   GtkRBTree *new_tree = NULL;
10696   GtkRBNode *new_node = NULL;
10697   GtkRBTree *cursor_tree = NULL;
10698   GtkRBNode *cursor_node = NULL;
10699   GtkTreePath *cursor_path = NULL;
10700   GtkTreeSelectMode mode = 0;
10701
10702   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10703     return FALSE;
10704
10705   if (tree_view->priv->cursor_node == NULL)
10706     return FALSE;
10707
10708   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10709                                                 tree_view->priv->cursor_node);
10710
10711   _gtk_tree_view_find_node (tree_view, cursor_path,
10712                             &cursor_tree, &cursor_node);
10713
10714   if (cursor_tree == NULL)
10715     {
10716       gtk_tree_path_free (cursor_path);
10717       return FALSE;
10718     }
10719
10720   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10721       tree_view->priv->focus_column)
10722     {
10723       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10724         {
10725           gtk_tree_path_free (cursor_path);
10726           return TRUE;
10727         }
10728     }
10729
10730   if (tree_view->priv->modify_selection_pressed)
10731     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10732   if (tree_view->priv->extend_selection_pressed)
10733     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10734
10735   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10736                                             cursor_node,
10737                                             cursor_tree,
10738                                             cursor_path,
10739                                             mode,
10740                                             FALSE);
10741
10742   /* We bail out if the original (tree, node) don't exist anymore after
10743    * handling the selection-changed callback.  We do return TRUE because
10744    * the key press has been handled at this point.
10745    */
10746   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10747
10748   if (cursor_tree != new_tree || cursor_node != new_node)
10749     return FALSE;
10750
10751   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10752
10753   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10754   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10755
10756   if (!tree_view->priv->extend_selection_pressed)
10757     gtk_tree_view_row_activated (tree_view, cursor_path,
10758                                  tree_view->priv->focus_column);
10759
10760   gtk_tree_path_free (cursor_path);
10761
10762   return TRUE;
10763 }
10764
10765 static gboolean
10766 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10767 {
10768   GtkRBTree *new_tree = NULL;
10769   GtkRBNode *new_node = NULL;
10770   GtkTreePath *cursor_path = NULL;
10771
10772   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10773     return FALSE;
10774
10775   if (tree_view->priv->cursor_node == NULL)
10776     return FALSE;
10777
10778   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10779                                                 tree_view->priv->cursor_node);
10780
10781   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10782                                             tree_view->priv->cursor_node,
10783                                             tree_view->priv->cursor_tree,
10784                                             cursor_path,
10785                                             GTK_TREE_SELECT_MODE_TOGGLE,
10786                                             FALSE);
10787
10788   /* We bail out if the original (tree, node) don't exist anymore after
10789    * handling the selection-changed callback.  We do return TRUE because
10790    * the key press has been handled at this point.
10791    */
10792   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10793
10794   if (tree_view->priv->cursor_node != new_node)
10795     return FALSE;
10796
10797   gtk_tree_view_clamp_node_visible (tree_view,
10798                                     tree_view->priv->cursor_tree,
10799                                     tree_view->priv->cursor_node);
10800
10801   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10802   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10803   gtk_tree_path_free (cursor_path);
10804
10805   return TRUE;
10806 }
10807
10808 static gboolean
10809 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10810                                                gboolean     logical,
10811                                                gboolean     expand,
10812                                                gboolean     open_all)
10813 {
10814   GtkTreePath *cursor_path = NULL;
10815
10816   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10817     return FALSE;
10818
10819   if (tree_view->priv->cursor_node == NULL)
10820     return FALSE;
10821
10822   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10823                                                 tree_view->priv->cursor_node);
10824
10825   /* Don't handle the event if we aren't an expander */
10826   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10827     return FALSE;
10828
10829   if (!logical
10830       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10831     expand = !expand;
10832
10833   if (expand)
10834     gtk_tree_view_real_expand_row (tree_view,
10835                                    cursor_path,
10836                                    tree_view->priv->cursor_tree,
10837                                    tree_view->priv->cursor_node,
10838                                    open_all,
10839                                    TRUE);
10840   else
10841     gtk_tree_view_real_collapse_row (tree_view,
10842                                      cursor_path,
10843                                      tree_view->priv->cursor_tree,
10844                                      tree_view->priv->cursor_node,
10845                                      TRUE);
10846
10847   gtk_tree_path_free (cursor_path);
10848
10849   return TRUE;
10850 }
10851
10852 static gboolean
10853 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10854 {
10855   GtkTreePath *cursor_path = NULL;
10856   GdkModifierType state;
10857
10858   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10859     goto out;
10860
10861   if (tree_view->priv->cursor_node == NULL)
10862     goto out;
10863
10864   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10865                                                 tree_view->priv->cursor_node);
10866
10867   if (tree_view->priv->cursor_tree->parent_node)
10868     {
10869       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10870
10871       gtk_tree_path_up (cursor_path);
10872
10873       if (gtk_get_current_event_state (&state))
10874         {
10875           GdkModifierType modify_mod_mask;
10876
10877           modify_mod_mask =
10878             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10879                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10880
10881           if ((state & modify_mod_mask) == modify_mod_mask)
10882             tree_view->priv->modify_selection_pressed = TRUE;
10883         }
10884
10885       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10886       gtk_tree_path_free (cursor_path);
10887
10888       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10889
10890       tree_view->priv->modify_selection_pressed = FALSE;
10891
10892       return TRUE;
10893     }
10894
10895  out:
10896
10897   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10898   return FALSE;
10899 }
10900
10901 static gboolean
10902 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10903 {
10904   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10905   tree_view->priv->typeselect_flush_timeout = 0;
10906
10907   return FALSE;
10908 }
10909
10910 /* Cut and paste from gtkwindow.c */
10911 static void
10912 send_focus_change (GtkWidget *widget,
10913                    GdkDevice *device,
10914                    gboolean   in)
10915 {
10916   GdkDeviceManager *device_manager;
10917   GList *devices, *d;
10918
10919   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10920   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10921   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10922   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10923
10924   for (d = devices; d; d = d->next)
10925     {
10926       GdkDevice *dev = d->data;
10927       GdkEvent *fevent;
10928       GdkWindow *window;
10929
10930       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10931         continue;
10932
10933       window = gtk_widget_get_window (widget);
10934
10935       /* Skip non-master keyboards that haven't
10936        * selected for events from this window
10937        */
10938       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10939           !gdk_window_get_device_events (window, dev))
10940         continue;
10941
10942       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10943
10944       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10945       fevent->focus_change.window = g_object_ref (window);
10946       fevent->focus_change.in = in;
10947       gdk_event_set_device (fevent, device);
10948
10949       gtk_widget_send_focus_change (widget, fevent);
10950
10951       gdk_event_free (fevent);
10952     }
10953
10954   g_list_free (devices);
10955 }
10956
10957 static void
10958 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10959 {
10960   GtkWidget *frame, *vbox, *toplevel;
10961   GdkScreen *screen;
10962
10963   if (tree_view->priv->search_custom_entry_set)
10964     return;
10965
10966   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10967   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10968
10969    if (tree_view->priv->search_window != NULL)
10970      {
10971        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10972          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10973                                       GTK_WINDOW (tree_view->priv->search_window));
10974        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10975          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10976                                          GTK_WINDOW (tree_view->priv->search_window));
10977
10978        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10979
10980        return;
10981      }
10982
10983   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10984   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10985
10986   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10987     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10988                                  GTK_WINDOW (tree_view->priv->search_window));
10989
10990   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10991                             GDK_WINDOW_TYPE_HINT_UTILITY);
10992   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10993   g_signal_connect (tree_view->priv->search_window, "delete-event",
10994                     G_CALLBACK (gtk_tree_view_search_delete_event),
10995                     tree_view);
10996   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10997                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10998                     tree_view);
10999   g_signal_connect (tree_view->priv->search_window, "button-press-event",
11000                     G_CALLBACK (gtk_tree_view_search_button_press_event),
11001                     tree_view);
11002   g_signal_connect (tree_view->priv->search_window, "scroll-event",
11003                     G_CALLBACK (gtk_tree_view_search_scroll_event),
11004                     tree_view);
11005
11006   frame = gtk_frame_new (NULL);
11007   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
11008   gtk_widget_show (frame);
11009   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
11010
11011   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
11012   gtk_widget_show (vbox);
11013   gtk_container_add (GTK_CONTAINER (frame), vbox);
11014   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
11015
11016   /* add entry */
11017   tree_view->priv->search_entry = gtk_entry_new ();
11018   gtk_widget_show (tree_view->priv->search_entry);
11019   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
11020                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
11021                     tree_view);
11022   g_signal_connect (tree_view->priv->search_entry,
11023                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
11024                     tree_view);
11025
11026   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
11027                     "preedit-changed",
11028                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
11029                     tree_view);
11030
11031   gtk_container_add (GTK_CONTAINER (vbox),
11032                      tree_view->priv->search_entry);
11033
11034   gtk_widget_realize (tree_view->priv->search_entry);
11035 }
11036
11037 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
11038  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
11039  */
11040 static gboolean
11041 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11042                                              GdkDevice   *device,
11043                                              gboolean     keybinding)
11044 {
11045   /* We only start interactive search if we have focus or the columns
11046    * have focus.  If one of our children have focus, we don't want to
11047    * start the search.
11048    */
11049   GList *list;
11050   gboolean found_focus = FALSE;
11051   GtkWidgetClass *entry_parent_class;
11052
11053   if (!tree_view->priv->enable_search && !keybinding)
11054     return FALSE;
11055
11056   if (tree_view->priv->search_custom_entry_set)
11057     return FALSE;
11058
11059   if (tree_view->priv->search_window != NULL &&
11060       gtk_widget_get_visible (tree_view->priv->search_window))
11061     return TRUE;
11062
11063   for (list = tree_view->priv->columns; list; list = list->next)
11064     {
11065       GtkTreeViewColumn *column;
11066       GtkWidget         *button;
11067
11068       column = list->data;
11069       if (!gtk_tree_view_column_get_visible (column))
11070         continue;
11071
11072       button = gtk_tree_view_column_get_button (column);
11073       if (gtk_widget_has_focus (button))
11074         {
11075           found_focus = TRUE;
11076           break;
11077         }
11078     }
11079
11080   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11081     found_focus = TRUE;
11082
11083   if (!found_focus)
11084     return FALSE;
11085
11086   if (tree_view->priv->search_column < 0)
11087     return FALSE;
11088
11089   gtk_tree_view_ensure_interactive_directory (tree_view);
11090
11091   if (keybinding)
11092     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11093
11094   /* done, show it */
11095   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11096   gtk_widget_show (tree_view->priv->search_window);
11097   if (tree_view->priv->search_entry_changed_id == 0)
11098     {
11099       tree_view->priv->search_entry_changed_id =
11100         g_signal_connect (tree_view->priv->search_entry, "changed",
11101                           G_CALLBACK (gtk_tree_view_search_init),
11102                           tree_view);
11103     }
11104
11105   tree_view->priv->typeselect_flush_timeout =
11106     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11107                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11108                    tree_view);
11109
11110   /* Grab focus will select all the text.  We don't want that to happen, so we
11111    * call the parent instance and bypass the selection change.  This is probably
11112    * really non-kosher. */
11113   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11114   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11115
11116   /* send focus-in event */
11117   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11118
11119   /* search first matching iter */
11120   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11121
11122   return TRUE;
11123 }
11124
11125 static gboolean
11126 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11127 {
11128   return gtk_tree_view_real_start_interactive_search (tree_view,
11129                                                       gtk_get_current_event_device (),
11130                                                       TRUE);
11131 }
11132
11133 /* this function returns the new width of the column being resized given
11134  * the column and x position of the cursor; the x cursor position is passed
11135  * in as a pointer and automagicly corrected if it's beyond min/max limits
11136  */
11137 static gint
11138 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11139                                 gint       i,
11140                                 gint      *x)
11141 {
11142   GtkAllocation allocation;
11143   GtkTreeViewColumn *column;
11144   GtkRequisition button_req;
11145   gint max_width, min_width;
11146   gint width;
11147   gboolean rtl;
11148
11149   /* first translate the x position from widget->window
11150    * to clist->clist_window
11151    */
11152   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11153   column = g_list_nth (tree_view->priv->columns, i)->data;
11154   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11155   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11156
11157   /* Clamp down the value */
11158   min_width = gtk_tree_view_column_get_min_width (column);
11159   if (min_width == -1)
11160     {
11161       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11162       width = MAX (button_req.width, width);
11163     }
11164   else
11165     width = MAX (min_width, width);
11166
11167   max_width = gtk_tree_view_column_get_max_width (column);
11168   if (max_width != -1)
11169     width = MIN (width, max_width);
11170
11171   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11172
11173   return width;
11174 }
11175
11176
11177 /* FIXME this adjust_allocation is a big cut-and-paste from
11178  * GtkCList, needs to be some "official" way to do this
11179  * factored out.
11180  */
11181 typedef struct
11182 {
11183   GdkWindow *window;
11184   int dx;
11185   int dy;
11186 } ScrollData;
11187
11188 /* The window to which widget->window is relative */
11189 #define ALLOCATION_WINDOW(widget)               \
11190    (!gtk_widget_get_has_window (widget) ?                   \
11191     gtk_widget_get_window (widget) :                        \
11192     gdk_window_get_parent (gtk_widget_get_window (widget)))
11193
11194 static void
11195 adjust_allocation_recurse (GtkWidget *widget,
11196                            gpointer   data)
11197 {
11198   GtkAllocation allocation;
11199   ScrollData *scroll_data = data;
11200
11201   /* Need to really size allocate instead of just poking
11202    * into widget->allocation if the widget is not realized.
11203    * FIXME someone figure out why this was.
11204    */
11205   gtk_widget_get_allocation (widget, &allocation);
11206   if (!gtk_widget_get_realized (widget))
11207     {
11208       if (gtk_widget_get_visible (widget))
11209         {
11210           GdkRectangle tmp_rectangle = allocation;
11211           tmp_rectangle.x += scroll_data->dx;
11212           tmp_rectangle.y += scroll_data->dy;
11213
11214           gtk_widget_size_allocate (widget, &tmp_rectangle);
11215         }
11216     }
11217   else
11218     {
11219       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11220         {
11221           allocation.x += scroll_data->dx;
11222           allocation.y += scroll_data->dy;
11223           gtk_widget_set_allocation (widget, &allocation);
11224
11225           if (GTK_IS_CONTAINER (widget))
11226             gtk_container_forall (GTK_CONTAINER (widget),
11227                                   adjust_allocation_recurse,
11228                                   data);
11229         }
11230     }
11231 }
11232
11233 static void
11234 adjust_allocation (GtkWidget *widget,
11235                    int        dx,
11236                    int        dy)
11237 {
11238   ScrollData scroll_data;
11239
11240   if (gtk_widget_get_realized (widget))
11241     scroll_data.window = ALLOCATION_WINDOW (widget);
11242   else
11243     scroll_data.window = NULL;
11244
11245   scroll_data.dx = dx;
11246   scroll_data.dy = dy;
11247
11248   adjust_allocation_recurse (widget, &scroll_data);
11249 }
11250
11251 /* Callbacks */
11252 static void
11253 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11254                                   GtkTreeView   *tree_view)
11255 {
11256   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11257     {
11258       GtkStyleContext *context;
11259       gint dy;
11260
11261       gdk_window_move (tree_view->priv->bin_window,
11262                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11263                        gtk_tree_view_get_effective_header_height (tree_view));
11264       gdk_window_move (tree_view->priv->header_window,
11265                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11266                        0);
11267       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11268       if (dy)
11269         {
11270           update_prelight (tree_view,
11271                            tree_view->priv->event_last_x,
11272                            tree_view->priv->event_last_y - dy);
11273
11274           if (tree_view->priv->edited_column)
11275             {
11276               GList *list;
11277               GtkTreeViewChild *child = NULL;
11278               GtkCellEditable *edit_widget;
11279               GtkCellArea *area;
11280
11281               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11282               edit_widget = gtk_cell_area_get_edit_widget (area);
11283               if (GTK_IS_WIDGET (edit_widget))
11284                 {
11285                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11286
11287                   for (list = tree_view->priv->children; list; list = list->next)
11288                     {
11289                       child = (GtkTreeViewChild *)list->data;
11290                       if (child->widget == GTK_WIDGET (edit_widget))
11291                         {
11292                           child->y += dy;
11293                           break;
11294                         }
11295                     }
11296                 }
11297             }
11298         }
11299       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11300
11301       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11302       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11303
11304       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11305         {
11306           /* update our dy and top_row */
11307           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11308
11309           if (!tree_view->priv->in_top_row_to_dy)
11310             gtk_tree_view_dy_to_top_row (tree_view);
11311         }
11312     }
11313 }
11314
11315 \f
11316
11317 /* Public methods
11318  */
11319
11320 /**
11321  * gtk_tree_view_new:
11322  *
11323  * Creates a new #GtkTreeView widget.
11324  *
11325  * Return value: A newly created #GtkTreeView widget.
11326  **/
11327 GtkWidget *
11328 gtk_tree_view_new (void)
11329 {
11330   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11331 }
11332
11333 /**
11334  * gtk_tree_view_new_with_model:
11335  * @model: the model.
11336  *
11337  * Creates a new #GtkTreeView widget with the model initialized to @model.
11338  *
11339  * Return value: A newly created #GtkTreeView widget.
11340  **/
11341 GtkWidget *
11342 gtk_tree_view_new_with_model (GtkTreeModel *model)
11343 {
11344   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11345 }
11346
11347 /* Public Accessors
11348  */
11349
11350 /**
11351  * gtk_tree_view_get_model:
11352  * @tree_view: a #GtkTreeView
11353  *
11354  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11355  * model is unset.
11356  *
11357  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11358  **/
11359 GtkTreeModel *
11360 gtk_tree_view_get_model (GtkTreeView *tree_view)
11361 {
11362   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11363
11364   return tree_view->priv->model;
11365 }
11366
11367 /**
11368  * gtk_tree_view_set_model:
11369  * @tree_view: A #GtkTreeNode.
11370  * @model: (allow-none): The model.
11371  *
11372  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11373  * set, it will remove it before setting the new model.  If @model is %NULL,
11374  * then it will unset the old model.
11375  **/
11376 void
11377 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11378                          GtkTreeModel *model)
11379 {
11380   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11381   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11382
11383   if (model == tree_view->priv->model)
11384     return;
11385
11386   if (tree_view->priv->scroll_to_path)
11387     {
11388       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11389       tree_view->priv->scroll_to_path = NULL;
11390     }
11391
11392   if (tree_view->priv->rubber_band_status)
11393     gtk_tree_view_stop_rubber_band (tree_view);
11394
11395   if (tree_view->priv->model)
11396     {
11397       GList *tmplist = tree_view->priv->columns;
11398       GtkStyleContext *context;
11399
11400       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11401       gtk_tree_view_stop_editing (tree_view, TRUE);
11402
11403       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11404       gtk_style_context_cancel_animations (context, NULL);
11405
11406       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11407                                             gtk_tree_view_row_changed,
11408                                             tree_view);
11409       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11410                                             gtk_tree_view_row_inserted,
11411                                             tree_view);
11412       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11413                                             gtk_tree_view_row_has_child_toggled,
11414                                             tree_view);
11415       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11416                                             gtk_tree_view_row_deleted,
11417                                             tree_view);
11418       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11419                                             gtk_tree_view_rows_reordered,
11420                                             tree_view);
11421
11422       for (; tmplist; tmplist = tmplist->next)
11423         _gtk_tree_view_column_unset_model (tmplist->data,
11424                                            tree_view->priv->model);
11425
11426       if (tree_view->priv->tree)
11427         gtk_tree_view_free_rbtree (tree_view);
11428
11429       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11430       tree_view->priv->drag_dest_row = NULL;
11431       gtk_tree_row_reference_free (tree_view->priv->anchor);
11432       tree_view->priv->anchor = NULL;
11433       gtk_tree_row_reference_free (tree_view->priv->top_row);
11434       tree_view->priv->top_row = NULL;
11435       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11436       tree_view->priv->scroll_to_path = NULL;
11437
11438       tree_view->priv->scroll_to_column = NULL;
11439
11440       g_object_unref (tree_view->priv->model);
11441
11442       tree_view->priv->search_column = -1;
11443       tree_view->priv->fixed_height_check = 0;
11444       tree_view->priv->fixed_height = -1;
11445       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11446       tree_view->priv->last_button_x = -1;
11447       tree_view->priv->last_button_y = -1;
11448     }
11449
11450   tree_view->priv->model = model;
11451
11452   if (tree_view->priv->model)
11453     {
11454       gint i;
11455       GtkTreePath *path;
11456       GtkTreeIter iter;
11457       GtkTreeModelFlags flags;
11458
11459       if (tree_view->priv->search_column == -1)
11460         {
11461           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11462             {
11463               GType type = gtk_tree_model_get_column_type (model, i);
11464
11465               if (g_value_type_transformable (type, G_TYPE_STRING))
11466                 {
11467                   tree_view->priv->search_column = i;
11468                   break;
11469                 }
11470             }
11471         }
11472
11473       g_object_ref (tree_view->priv->model);
11474       g_signal_connect (tree_view->priv->model,
11475                         "row-changed",
11476                         G_CALLBACK (gtk_tree_view_row_changed),
11477                         tree_view);
11478       g_signal_connect (tree_view->priv->model,
11479                         "row-inserted",
11480                         G_CALLBACK (gtk_tree_view_row_inserted),
11481                         tree_view);
11482       g_signal_connect (tree_view->priv->model,
11483                         "row-has-child-toggled",
11484                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11485                         tree_view);
11486       g_signal_connect (tree_view->priv->model,
11487                         "row-deleted",
11488                         G_CALLBACK (gtk_tree_view_row_deleted),
11489                         tree_view);
11490       g_signal_connect (tree_view->priv->model,
11491                         "rows-reordered",
11492                         G_CALLBACK (gtk_tree_view_rows_reordered),
11493                         tree_view);
11494
11495       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11496       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11497         tree_view->priv->is_list = TRUE;
11498       else
11499         tree_view->priv->is_list = FALSE;
11500
11501       path = gtk_tree_path_new_first ();
11502       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11503         {
11504           tree_view->priv->tree = _gtk_rbtree_new ();
11505           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11506           _gtk_tree_view_accessible_add (tree_view, tree_view->priv->tree, NULL);
11507         }
11508       gtk_tree_path_free (path);
11509
11510       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11511       install_presize_handler (tree_view);
11512     }
11513
11514   gtk_tree_view_real_set_cursor (tree_view, NULL, CURSOR_INVALID);
11515
11516   g_object_notify (G_OBJECT (tree_view), "model");
11517
11518   if (tree_view->priv->selection)
11519   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11520
11521   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11522     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11523 }
11524
11525 /**
11526  * gtk_tree_view_get_selection:
11527  * @tree_view: A #GtkTreeView.
11528  *
11529  * Gets the #GtkTreeSelection associated with @tree_view.
11530  *
11531  * Return value: (transfer none): A #GtkTreeSelection object.
11532  **/
11533 GtkTreeSelection *
11534 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11535 {
11536   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11537
11538   return tree_view->priv->selection;
11539 }
11540
11541 /**
11542  * gtk_tree_view_get_hadjustment:
11543  * @tree_view: A #GtkTreeView
11544  *
11545  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11546  *
11547  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11548  *     if none is currently being used.
11549  *
11550  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11551  **/
11552 GtkAdjustment *
11553 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11554 {
11555   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11556
11557   return gtk_tree_view_do_get_hadjustment (tree_view);
11558 }
11559
11560 static GtkAdjustment *
11561 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11562 {
11563   return tree_view->priv->hadjustment;
11564 }
11565
11566 /**
11567  * gtk_tree_view_set_hadjustment:
11568  * @tree_view: A #GtkTreeView
11569  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11570  *
11571  * Sets the #GtkAdjustment for the current horizontal aspect.
11572  *
11573  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11574  **/
11575 void
11576 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11577                                GtkAdjustment *adjustment)
11578 {
11579   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11580   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11581
11582   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11583 }
11584
11585 static void
11586 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11587                                   GtkAdjustment *adjustment)
11588 {
11589   GtkTreeViewPrivate *priv = tree_view->priv;
11590
11591   if (adjustment && priv->hadjustment == adjustment)
11592     return;
11593
11594   if (priv->hadjustment != NULL)
11595     {
11596       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11597                                             gtk_tree_view_adjustment_changed,
11598                                             tree_view);
11599       g_object_unref (priv->hadjustment);
11600     }
11601
11602   if (adjustment == NULL)
11603     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11604                                      0.0, 0.0, 0.0);
11605
11606   g_signal_connect (adjustment, "value-changed",
11607                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11608   priv->hadjustment = g_object_ref_sink (adjustment);
11609   /* FIXME: Adjustment should probably be populated here with fresh values, but
11610    * internal details are too complicated for me to decipher right now.
11611    */
11612   gtk_tree_view_adjustment_changed (NULL, tree_view);
11613
11614   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11615 }
11616
11617 /**
11618  * gtk_tree_view_get_vadjustment:
11619  * @tree_view: A #GtkTreeView
11620  *
11621  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11622  *
11623  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11624  *     if none is currently being used.
11625  *
11626  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11627  **/
11628 GtkAdjustment *
11629 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11630 {
11631   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11632
11633   return gtk_tree_view_do_get_vadjustment (tree_view);
11634 }
11635
11636 static GtkAdjustment *
11637 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11638 {
11639   return tree_view->priv->vadjustment;
11640 }
11641
11642 /**
11643  * gtk_tree_view_set_vadjustment:
11644  * @tree_view: A #GtkTreeView
11645  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11646  *
11647  * Sets the #GtkAdjustment for the current vertical aspect.
11648  *
11649  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11650  **/
11651 void
11652 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11653                                GtkAdjustment *adjustment)
11654 {
11655   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11656   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11657
11658   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11659 }
11660
11661 static void
11662 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11663                                   GtkAdjustment *adjustment)
11664 {
11665   GtkTreeViewPrivate *priv = tree_view->priv;
11666
11667   if (adjustment && priv->vadjustment == adjustment)
11668     return;
11669
11670   if (priv->vadjustment != NULL)
11671     {
11672       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11673                                             gtk_tree_view_adjustment_changed,
11674                                             tree_view);
11675       g_object_unref (priv->vadjustment);
11676     }
11677
11678   if (adjustment == NULL)
11679     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11680                                      0.0, 0.0, 0.0);
11681
11682   g_signal_connect (adjustment, "value-changed",
11683                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11684   priv->vadjustment = g_object_ref_sink (adjustment);
11685   /* FIXME: Adjustment should probably be populated here with fresh values, but
11686    * internal details are too complicated for me to decipher right now.
11687    */
11688   gtk_tree_view_adjustment_changed (NULL, tree_view);
11689   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11690 }
11691
11692 /* Column and header operations */
11693
11694 /**
11695  * gtk_tree_view_get_headers_visible:
11696  * @tree_view: A #GtkTreeView.
11697  *
11698  * Returns %TRUE if the headers on the @tree_view are visible.
11699  *
11700  * Return value: Whether the headers are visible or not.
11701  **/
11702 gboolean
11703 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11704 {
11705   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11706
11707   return tree_view->priv->headers_visible;
11708 }
11709
11710 /**
11711  * gtk_tree_view_set_headers_visible:
11712  * @tree_view: A #GtkTreeView.
11713  * @headers_visible: %TRUE if the headers are visible
11714  *
11715  * Sets the visibility state of the headers.
11716  **/
11717 void
11718 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11719                                    gboolean     headers_visible)
11720 {
11721   gint x, y;
11722   GList *list;
11723   GtkTreeViewColumn *column;
11724   GtkAllocation allocation;
11725   GtkWidget *button;
11726
11727   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11728
11729   headers_visible = !! headers_visible;
11730
11731   if (tree_view->priv->headers_visible == headers_visible)
11732     return;
11733
11734   tree_view->priv->headers_visible = headers_visible == TRUE;
11735
11736   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11737     {
11738       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11739       if (headers_visible)
11740         {
11741           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11742           gdk_window_move_resize (tree_view->priv->bin_window,
11743                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11744                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11745
11746           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11747             gtk_tree_view_map_buttons (tree_view);
11748         }
11749       else
11750         {
11751           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11752
11753           for (list = tree_view->priv->columns; list; list = list->next)
11754             {
11755               column = list->data;
11756               button = gtk_tree_view_column_get_button (column);
11757
11758               gtk_widget_hide (button);
11759               gtk_widget_unmap (button);
11760             }
11761           gdk_window_hide (tree_view->priv->header_window);
11762         }
11763     }
11764
11765   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11766   gtk_adjustment_configure (tree_view->priv->vadjustment,
11767                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11768                             0,
11769                             tree_view->priv->height,
11770                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11771                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11772                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11773
11774   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11775
11776   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11777 }
11778
11779 /**
11780  * gtk_tree_view_columns_autosize:
11781  * @tree_view: A #GtkTreeView.
11782  *
11783  * Resizes all columns to their optimal width. Only works after the
11784  * treeview has been realized.
11785  **/
11786 void
11787 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11788 {
11789   gboolean dirty = FALSE;
11790   GList *list;
11791   GtkTreeViewColumn *column;
11792
11793   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11794
11795   for (list = tree_view->priv->columns; list; list = list->next)
11796     {
11797       column = list->data;
11798       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11799         continue;
11800       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11801       dirty = TRUE;
11802     }
11803
11804   if (dirty)
11805     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11806 }
11807
11808 /**
11809  * gtk_tree_view_set_headers_clickable:
11810  * @tree_view: A #GtkTreeView.
11811  * @setting: %TRUE if the columns are clickable.
11812  *
11813  * Allow the column title buttons to be clicked.
11814  **/
11815 void
11816 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11817                                      gboolean   setting)
11818 {
11819   GList *list;
11820
11821   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11822
11823   for (list = tree_view->priv->columns; list; list = list->next)
11824     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11825
11826   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11827 }
11828
11829
11830 /**
11831  * gtk_tree_view_get_headers_clickable:
11832  * @tree_view: A #GtkTreeView.
11833  *
11834  * Returns whether all header columns are clickable.
11835  *
11836  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11837  *
11838  * Since: 2.10
11839  **/
11840 gboolean
11841 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11842 {
11843   GList *list;
11844
11845   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11846
11847   for (list = tree_view->priv->columns; list; list = list->next)
11848     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11849       return FALSE;
11850
11851   return TRUE;
11852 }
11853
11854 /**
11855  * gtk_tree_view_set_rules_hint:
11856  * @tree_view: a #GtkTreeView
11857  * @setting: %TRUE if the tree requires reading across rows
11858  *
11859  * This function tells GTK+ that the user interface for your
11860  * application requires users to read across tree rows and associate
11861  * cells with one another. By default, GTK+ will then render the tree
11862  * with alternating row colors. Do <emphasis>not</emphasis> use it
11863  * just because you prefer the appearance of the ruled tree; that's a
11864  * question for the theme. Some themes will draw tree rows in
11865  * alternating colors even when rules are turned off, and users who
11866  * prefer that appearance all the time can choose those themes. You
11867  * should call this function only as a <emphasis>semantic</emphasis>
11868  * hint to the theme engine that your tree makes alternating colors
11869  * useful from a functional standpoint (since it has lots of columns,
11870  * generally).
11871  *
11872  **/
11873 void
11874 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11875                               gboolean      setting)
11876 {
11877   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11878
11879   setting = setting != FALSE;
11880
11881   if (tree_view->priv->has_rules != setting)
11882     {
11883       tree_view->priv->has_rules = setting;
11884       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11885     }
11886
11887   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11888 }
11889
11890 /**
11891  * gtk_tree_view_get_rules_hint:
11892  * @tree_view: a #GtkTreeView
11893  *
11894  * Gets the setting set by gtk_tree_view_set_rules_hint().
11895  *
11896  * Return value: %TRUE if rules are useful for the user of this tree
11897  **/
11898 gboolean
11899 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11900 {
11901   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11902
11903   return tree_view->priv->has_rules;
11904 }
11905
11906 /* Public Column functions
11907  */
11908
11909 /**
11910  * gtk_tree_view_append_column:
11911  * @tree_view: A #GtkTreeView.
11912  * @column: The #GtkTreeViewColumn to add.
11913  *
11914  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11915  * mode enabled, then @column must have its "sizing" property set to be
11916  * GTK_TREE_VIEW_COLUMN_FIXED.
11917  *
11918  * Return value: The number of columns in @tree_view after appending.
11919  **/
11920 gint
11921 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11922                              GtkTreeViewColumn *column)
11923 {
11924   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11925   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11926   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11927
11928   return gtk_tree_view_insert_column (tree_view, column, -1);
11929 }
11930
11931 void
11932 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11933 {
11934   GList *columns;
11935
11936   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11937     {
11938       GtkTreeViewColumn *column = columns->data;
11939       GtkWidget *header_widget;
11940
11941       if (!gtk_tree_view_column_get_visible (column))
11942         continue;
11943
11944       header_widget = gtk_tree_view_column_get_widget (column);
11945
11946       if (!header_widget)
11947         header_widget = gtk_tree_view_column_get_button (column);
11948
11949       gtk_widget_reset_style (header_widget);
11950     }
11951 }
11952
11953
11954 /**
11955  * gtk_tree_view_remove_column:
11956  * @tree_view: A #GtkTreeView.
11957  * @column: The #GtkTreeViewColumn to remove.
11958  *
11959  * Removes @column from @tree_view.
11960  *
11961  * Return value: The number of columns in @tree_view after removing.
11962  **/
11963 gint
11964 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11965                              GtkTreeViewColumn *column)
11966 {
11967   guint position;
11968
11969   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11970   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11971   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11972
11973   if (tree_view->priv->focus_column == column)
11974     _gtk_tree_view_set_focus_column (tree_view, NULL);
11975
11976   if (tree_view->priv->edited_column == column)
11977     {
11978       gtk_tree_view_stop_editing (tree_view, TRUE);
11979
11980       /* no need to, but just to be sure ... */
11981       tree_view->priv->edited_column = NULL;
11982     }
11983
11984   if (tree_view->priv->expander_column == column)
11985     tree_view->priv->expander_column = NULL;
11986
11987   g_signal_handlers_disconnect_by_func (column,
11988                                         G_CALLBACK (column_sizing_notify),
11989                                         tree_view);
11990
11991   _gtk_tree_view_column_unset_tree_view (column);
11992
11993   position = g_list_index (tree_view->priv->columns, column);
11994
11995   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11996   tree_view->priv->n_columns--;
11997
11998   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11999     {
12000       GList *list;
12001
12002       _gtk_tree_view_column_unrealize_button (column);
12003       for (list = tree_view->priv->columns; list; list = list->next)
12004         {
12005           GtkTreeViewColumn *tmp_column;
12006
12007           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
12008           if (gtk_tree_view_column_get_visible (tmp_column))
12009             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
12010         }
12011
12012       if (tree_view->priv->n_columns == 0 &&
12013           gtk_tree_view_get_headers_visible (tree_view))
12014         gdk_window_hide (tree_view->priv->header_window);
12015
12016       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12017     }
12018
12019   _gtk_tree_view_reset_header_styles (tree_view);
12020
12021   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
12022
12023   g_object_unref (column);
12024   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12025
12026   return tree_view->priv->n_columns;
12027 }
12028
12029 /**
12030  * gtk_tree_view_insert_column:
12031  * @tree_view: A #GtkTreeView.
12032  * @column: The #GtkTreeViewColumn to be inserted.
12033  * @position: The position to insert @column in.
12034  *
12035  * This inserts the @column into the @tree_view at @position.  If @position is
12036  * -1, then the column is inserted at the end. If @tree_view has
12037  * "fixed_height" mode enabled, then @column must have its "sizing" property
12038  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12039  *
12040  * Return value: The number of columns in @tree_view after insertion.
12041  **/
12042 gint
12043 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12044                              GtkTreeViewColumn *column,
12045                              gint               position)
12046 {
12047   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12048   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12049   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12050
12051   if (tree_view->priv->fixed_height_mode)
12052     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12053                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12054
12055   if (position < 0 || position > tree_view->priv->n_columns)
12056     position = tree_view->priv->n_columns;
12057
12058   g_object_ref_sink (column);
12059
12060   if (tree_view->priv->n_columns == 0 &&
12061       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12062       gtk_tree_view_get_headers_visible (tree_view))
12063     {
12064       gdk_window_show (tree_view->priv->header_window);
12065     }
12066
12067   g_signal_connect (column, "notify::sizing",
12068                     G_CALLBACK (column_sizing_notify), tree_view);
12069
12070   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12071                                             column, position);
12072   tree_view->priv->n_columns++;
12073
12074   _gtk_tree_view_column_set_tree_view (column, tree_view);
12075
12076   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12077     {
12078       GList *list;
12079
12080       _gtk_tree_view_column_realize_button (column);
12081
12082       for (list = tree_view->priv->columns; list; list = list->next)
12083         {
12084           column = GTK_TREE_VIEW_COLUMN (list->data);
12085           if (gtk_tree_view_column_get_visible (column))
12086             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12087         }
12088       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12089     }
12090
12091   _gtk_tree_view_reset_header_styles (tree_view);
12092
12093   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12094
12095   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12096
12097   return tree_view->priv->n_columns;
12098 }
12099
12100 /**
12101  * gtk_tree_view_insert_column_with_attributes:
12102  * @tree_view: A #GtkTreeView
12103  * @position: The position to insert the new column in
12104  * @title: The title to set the header to
12105  * @cell: The #GtkCellRenderer
12106  * @...: A %NULL-terminated list of attributes
12107  *
12108  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12109  * @position.  If @position is -1, then the newly created column is inserted at
12110  * the end.  The column is initialized with the attributes given. If @tree_view
12111  * has "fixed_height" mode enabled, then the new column will have its sizing
12112  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12113  *
12114  * Return value: The number of columns in @tree_view after insertion.
12115  **/
12116 gint
12117 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12118                                              gint             position,
12119                                              const gchar     *title,
12120                                              GtkCellRenderer *cell,
12121                                              ...)
12122 {
12123   GtkTreeViewColumn *column;
12124   gchar *attribute;
12125   va_list args;
12126   gint column_id;
12127
12128   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12129
12130   column = gtk_tree_view_column_new ();
12131   if (tree_view->priv->fixed_height_mode)
12132     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12133
12134   gtk_tree_view_column_set_title (column, title);
12135   gtk_tree_view_column_pack_start (column, cell, TRUE);
12136
12137   va_start (args, cell);
12138
12139   attribute = va_arg (args, gchar *);
12140
12141   while (attribute != NULL)
12142     {
12143       column_id = va_arg (args, gint);
12144       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12145       attribute = va_arg (args, gchar *);
12146     }
12147
12148   va_end (args);
12149
12150   return gtk_tree_view_insert_column (tree_view, column, position);
12151 }
12152
12153 /**
12154  * gtk_tree_view_insert_column_with_data_func:
12155  * @tree_view: a #GtkTreeView
12156  * @position: Position to insert, -1 for append
12157  * @title: column title
12158  * @cell: cell renderer for column
12159  * @func: function to set attributes of cell renderer
12160  * @data: data for @func
12161  * @dnotify: destroy notifier for @data
12162  *
12163  * Convenience function that inserts a new column into the #GtkTreeView
12164  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12165  * attributes (normally using data from the model). See also
12166  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12167  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12168  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12169  *
12170  * Return value: number of columns in the tree view post-insert
12171  **/
12172 gint
12173 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12174                                              gint                       position,
12175                                              const gchar               *title,
12176                                              GtkCellRenderer           *cell,
12177                                              GtkTreeCellDataFunc        func,
12178                                              gpointer                   data,
12179                                              GDestroyNotify             dnotify)
12180 {
12181   GtkTreeViewColumn *column;
12182
12183   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12184
12185   column = gtk_tree_view_column_new ();
12186   if (tree_view->priv->fixed_height_mode)
12187     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12188
12189   gtk_tree_view_column_set_title (column, title);
12190   gtk_tree_view_column_pack_start (column, cell, TRUE);
12191   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12192
12193   return gtk_tree_view_insert_column (tree_view, column, position);
12194 }
12195
12196 /**
12197  * gtk_tree_view_get_n_columns:
12198  * @tree_view: a #GtkTreeView
12199  *
12200  * Queries the number of columns in the given @tree_view.
12201  *
12202  * Returns: The number of columns in the @tree_view
12203  *
12204  * Since: 3.4
12205  **/
12206 guint
12207 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12208 {
12209   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12210
12211   return tree_view->priv->n_columns;
12212 }
12213
12214 /**
12215  * gtk_tree_view_get_column:
12216  * @tree_view: A #GtkTreeView.
12217  * @n: The position of the column, counting from 0.
12218  *
12219  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12220  *
12221  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12222  *     position is outside the range of columns.
12223  **/
12224 GtkTreeViewColumn *
12225 gtk_tree_view_get_column (GtkTreeView *tree_view,
12226                           gint         n)
12227 {
12228   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12229
12230   if (n < 0 || n >= tree_view->priv->n_columns)
12231     return NULL;
12232
12233   if (tree_view->priv->columns == NULL)
12234     return NULL;
12235
12236   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12237 }
12238
12239 /**
12240  * gtk_tree_view_get_columns:
12241  * @tree_view: A #GtkTreeView
12242  *
12243  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12244  * The returned list must be freed with g_list_free ().
12245  *
12246  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12247  **/
12248 GList *
12249 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12250 {
12251   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12252
12253   return g_list_copy (tree_view->priv->columns);
12254 }
12255
12256 /**
12257  * gtk_tree_view_move_column_after:
12258  * @tree_view: A #GtkTreeView
12259  * @column: The #GtkTreeViewColumn to be moved.
12260  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12261  *
12262  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12263  * @column is placed in the first position.
12264  **/
12265 void
12266 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12267                                  GtkTreeViewColumn *column,
12268                                  GtkTreeViewColumn *base_column)
12269 {
12270   GList *column_list_el, *base_el = NULL;
12271
12272   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12273
12274   column_list_el = g_list_find (tree_view->priv->columns, column);
12275   g_return_if_fail (column_list_el != NULL);
12276
12277   if (base_column)
12278     {
12279       base_el = g_list_find (tree_view->priv->columns, base_column);
12280       g_return_if_fail (base_el != NULL);
12281     }
12282
12283   if (column_list_el->prev == base_el)
12284     return;
12285
12286   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12287   if (base_el == NULL)
12288     {
12289       column_list_el->prev = NULL;
12290       column_list_el->next = tree_view->priv->columns;
12291       if (column_list_el->next)
12292         column_list_el->next->prev = column_list_el;
12293       tree_view->priv->columns = column_list_el;
12294     }
12295   else
12296     {
12297       column_list_el->prev = base_el;
12298       column_list_el->next = base_el->next;
12299       if (column_list_el->next)
12300         column_list_el->next->prev = column_list_el;
12301       base_el->next = column_list_el;
12302     }
12303
12304   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12305     {
12306       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12307       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12308     }
12309
12310   _gtk_tree_view_reset_header_styles (tree_view);
12311
12312   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12313
12314   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12315 }
12316
12317 /**
12318  * gtk_tree_view_set_expander_column:
12319  * @tree_view: A #GtkTreeView
12320  * @column: %NULL, or the column to draw the expander arrow at.
12321  *
12322  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12323  * If @column is %NULL, then the expander arrow is always at the first
12324  * visible column.
12325  *
12326  * If you do not want expander arrow to appear in your tree, set the
12327  * expander column to a hidden column.
12328  **/
12329 void
12330 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12331                                    GtkTreeViewColumn *column)
12332 {
12333   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12334   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12335   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12336
12337   if (tree_view->priv->expander_column != column)
12338     {
12339       tree_view->priv->expander_column = column;
12340       g_object_notify (G_OBJECT (tree_view), "expander-column");
12341     }
12342 }
12343
12344 /**
12345  * gtk_tree_view_get_expander_column:
12346  * @tree_view: A #GtkTreeView
12347  *
12348  * Returns the column that is the current expander column.
12349  * This column has the expander arrow drawn next to it.
12350  *
12351  * Return value: (transfer none): The expander column.
12352  **/
12353 GtkTreeViewColumn *
12354 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12355 {
12356   GList *list;
12357
12358   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12359
12360   for (list = tree_view->priv->columns; list; list = list->next)
12361     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12362       return (GtkTreeViewColumn *) list->data;
12363   return NULL;
12364 }
12365
12366
12367 /**
12368  * gtk_tree_view_set_column_drag_function:
12369  * @tree_view: A #GtkTreeView.
12370  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12371  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12372  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12373  *
12374  * Sets a user function for determining where a column may be dropped when
12375  * dragged.  This function is called on every column pair in turn at the
12376  * beginning of a column drag to determine where a drop can take place.  The
12377  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12378  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12379  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12380  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12381  * @tree_view reverts to the default behavior of allowing all columns to be
12382  * dropped everywhere.
12383  **/
12384 void
12385 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12386                                         GtkTreeViewColumnDropFunc  func,
12387                                         gpointer                   user_data,
12388                                         GDestroyNotify             destroy)
12389 {
12390   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12391
12392   if (tree_view->priv->column_drop_func_data_destroy)
12393     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12394
12395   tree_view->priv->column_drop_func = func;
12396   tree_view->priv->column_drop_func_data = user_data;
12397   tree_view->priv->column_drop_func_data_destroy = destroy;
12398 }
12399
12400 /**
12401  * gtk_tree_view_scroll_to_point:
12402  * @tree_view: a #GtkTreeView
12403  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12404  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12405  *
12406  * Scrolls the tree view such that the top-left corner of the visible
12407  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12408  * in tree coordinates.  The @tree_view must be realized before
12409  * this function is called.  If it isn't, you probably want to be
12410  * using gtk_tree_view_scroll_to_cell().
12411  *
12412  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12413  **/
12414 void
12415 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12416                                gint         tree_x,
12417                                gint         tree_y)
12418 {
12419   GtkAdjustment *hadj;
12420   GtkAdjustment *vadj;
12421
12422   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12423   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12424
12425   hadj = tree_view->priv->hadjustment;
12426   vadj = tree_view->priv->vadjustment;
12427
12428   if (tree_x != -1)
12429     gtk_adjustment_set_value (hadj, tree_x);
12430   if (tree_y != -1)
12431     gtk_adjustment_set_value (vadj, tree_y);
12432 }
12433
12434 /**
12435  * gtk_tree_view_scroll_to_cell:
12436  * @tree_view: A #GtkTreeView.
12437  * @path: (allow-none): The path of the row to move to, or %NULL.
12438  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12439  * @use_align: whether to use alignment arguments, or %FALSE.
12440  * @row_align: The vertical alignment of the row specified by @path.
12441  * @col_align: The horizontal alignment of the column specified by @column.
12442  *
12443  * Moves the alignments of @tree_view to the position specified by @column and
12444  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12445  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12446  * or @path need to be non-%NULL.  @row_align determines where the row is
12447  * placed, and @col_align determines where @column is placed.  Both are expected
12448  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12449  * right/bottom alignment, 0.5 means center.
12450  *
12451  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12452  * tree does the minimum amount of work to scroll the cell onto the screen.
12453  * This means that the cell will be scrolled to the edge closest to its current
12454  * position.  If the cell is currently visible on the screen, nothing is done.
12455  *
12456  * This function only works if the model is set, and @path is a valid row on the
12457  * model.  If the model changes before the @tree_view is realized, the centered
12458  * path will be modified to reflect this change.
12459  **/
12460 void
12461 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12462                               GtkTreePath       *path,
12463                               GtkTreeViewColumn *column,
12464                               gboolean           use_align,
12465                               gfloat             row_align,
12466                               gfloat             col_align)
12467 {
12468   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12469   g_return_if_fail (tree_view->priv->model != NULL);
12470   g_return_if_fail (tree_view->priv->tree != NULL);
12471   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12472   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12473   g_return_if_fail (path != NULL || column != NULL);
12474
12475 #if 0
12476   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12477            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12478 #endif
12479   row_align = CLAMP (row_align, 0.0, 1.0);
12480   col_align = CLAMP (col_align, 0.0, 1.0);
12481
12482
12483   /* Note: Despite the benefits that come from having one code path for the
12484    * scrolling code, we short-circuit validate_visible_area's immplementation as
12485    * it is much slower than just going to the point.
12486    */
12487   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12488       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12489       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12490       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12491     {
12492       if (tree_view->priv->scroll_to_path)
12493         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12494
12495       tree_view->priv->scroll_to_path = NULL;
12496       tree_view->priv->scroll_to_column = NULL;
12497
12498       if (path)
12499         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12500       if (column)
12501         tree_view->priv->scroll_to_column = column;
12502       tree_view->priv->scroll_to_use_align = use_align;
12503       tree_view->priv->scroll_to_row_align = row_align;
12504       tree_view->priv->scroll_to_col_align = col_align;
12505
12506       install_presize_handler (tree_view);
12507     }
12508   else
12509     {
12510       GdkRectangle cell_rect;
12511       GdkRectangle vis_rect;
12512       gint dest_x, dest_y;
12513
12514       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12515       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12516
12517       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12518
12519       dest_x = vis_rect.x;
12520       dest_y = vis_rect.y;
12521
12522       if (column)
12523         {
12524           if (use_align)
12525             {
12526               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12527             }
12528           else
12529             {
12530               if (cell_rect.x < vis_rect.x)
12531                 dest_x = cell_rect.x;
12532               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12533                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12534             }
12535         }
12536
12537       if (path)
12538         {
12539           if (use_align)
12540             {
12541               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12542               dest_y = MAX (dest_y, 0);
12543             }
12544           else
12545             {
12546               if (cell_rect.y < vis_rect.y)
12547                 dest_y = cell_rect.y;
12548               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12549                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12550             }
12551         }
12552
12553       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12554     }
12555 }
12556
12557 /**
12558  * gtk_tree_view_row_activated:
12559  * @tree_view: A #GtkTreeView
12560  * @path: The #GtkTreePath to be activated.
12561  * @column: The #GtkTreeViewColumn to be activated.
12562  *
12563  * Activates the cell determined by @path and @column.
12564  **/
12565 void
12566 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12567                              GtkTreePath       *path,
12568                              GtkTreeViewColumn *column)
12569 {
12570   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12571
12572   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12573 }
12574
12575
12576 static void
12577 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12578                                           GtkRBNode *node,
12579                                           gpointer   data)
12580 {
12581   GtkTreeView *tree_view = data;
12582
12583   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12584       node->children)
12585     {
12586       GtkTreePath *path;
12587       GtkTreeIter iter;
12588
12589       path = _gtk_tree_path_new_from_rbtree (tree, node);
12590       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12591
12592       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12593
12594       gtk_tree_path_free (path);
12595     }
12596
12597   if (node->children)
12598     _gtk_rbtree_traverse (node->children,
12599                           node->children->root,
12600                           G_PRE_ORDER,
12601                           gtk_tree_view_expand_all_emission_helper,
12602                           tree_view);
12603 }
12604
12605 /**
12606  * gtk_tree_view_expand_all:
12607  * @tree_view: A #GtkTreeView.
12608  *
12609  * Recursively expands all nodes in the @tree_view.
12610  **/
12611 void
12612 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12613 {
12614   GtkTreePath *path;
12615   GtkRBTree *tree;
12616   GtkRBNode *node;
12617
12618   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12619
12620   if (tree_view->priv->tree == NULL)
12621     return;
12622
12623   path = gtk_tree_path_new_first ();
12624   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12625
12626   while (node)
12627     {
12628       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12629       node = _gtk_rbtree_next (tree, node);
12630       gtk_tree_path_next (path);
12631   }
12632
12633   gtk_tree_path_free (path);
12634 }
12635
12636 /**
12637  * gtk_tree_view_collapse_all:
12638  * @tree_view: A #GtkTreeView.
12639  *
12640  * Recursively collapses all visible, expanded nodes in @tree_view.
12641  **/
12642 void
12643 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12644 {
12645   GtkRBTree *tree;
12646   GtkRBNode *node;
12647   GtkTreePath *path;
12648   gint *indices;
12649
12650   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12651
12652   if (tree_view->priv->tree == NULL)
12653     return;
12654
12655   path = gtk_tree_path_new ();
12656   gtk_tree_path_down (path);
12657   indices = gtk_tree_path_get_indices (path);
12658
12659   tree = tree_view->priv->tree;
12660   node = _gtk_rbtree_first (tree);
12661
12662   while (node)
12663     {
12664       if (node->children)
12665         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12666       indices[0]++;
12667       node = _gtk_rbtree_next (tree, node);
12668     }
12669
12670   gtk_tree_path_free (path);
12671 }
12672
12673 /**
12674  * gtk_tree_view_expand_to_path:
12675  * @tree_view: A #GtkTreeView.
12676  * @path: path to a row.
12677  *
12678  * Expands the row at @path. This will also expand all parent rows of
12679  * @path as necessary.
12680  *
12681  * Since: 2.2
12682  **/
12683 void
12684 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12685                               GtkTreePath *path)
12686 {
12687   gint i, depth;
12688   gint *indices;
12689   GtkTreePath *tmp;
12690
12691   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12692   g_return_if_fail (path != NULL);
12693
12694   depth = gtk_tree_path_get_depth (path);
12695   indices = gtk_tree_path_get_indices (path);
12696
12697   tmp = gtk_tree_path_new ();
12698   g_return_if_fail (tmp != NULL);
12699
12700   for (i = 0; i < depth; i++)
12701     {
12702       gtk_tree_path_append_index (tmp, indices[i]);
12703       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12704     }
12705
12706   gtk_tree_path_free (tmp);
12707 }
12708
12709 /* FIXME the bool return values for expand_row and collapse_row are
12710  * not analagous; they should be TRUE if the row had children and
12711  * was not already in the requested state.
12712  */
12713
12714
12715 static gboolean
12716 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12717                                GtkTreePath *path,
12718                                GtkRBTree   *tree,
12719                                GtkRBNode   *node,
12720                                gboolean     open_all,
12721                                gboolean     animate)
12722 {
12723   GtkTreeIter iter;
12724   GtkTreeIter temp;
12725   gboolean expand;
12726
12727   if (animate)
12728     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12729                   "gtk-enable-animations", &animate,
12730                   NULL);
12731
12732   remove_auto_expand_timeout (tree_view);
12733
12734   if (node->children && !open_all)
12735     return FALSE;
12736
12737   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12738     return FALSE;
12739
12740   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12741   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12742     return FALSE;
12743
12744
12745    if (node->children && open_all)
12746     {
12747       gboolean retval = FALSE;
12748       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12749
12750       gtk_tree_path_append_index (tmp_path, 0);
12751       tree = node->children;
12752       node = _gtk_rbtree_first (tree);
12753       /* try to expand the children */
12754       do
12755         {
12756          gboolean t;
12757          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12758                                             TRUE, animate);
12759          if (t)
12760            retval = TRUE;
12761
12762          gtk_tree_path_next (tmp_path);
12763          node = _gtk_rbtree_next (tree, node);
12764        }
12765       while (node != NULL);
12766
12767       gtk_tree_path_free (tmp_path);
12768
12769       return retval;
12770     }
12771
12772   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12773
12774   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12775     return FALSE;
12776
12777   if (expand)
12778     return FALSE;
12779
12780   node->children = _gtk_rbtree_new ();
12781   node->children->parent_tree = tree;
12782   node->children->parent_node = node;
12783
12784   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12785
12786   gtk_tree_view_build_tree (tree_view,
12787                             node->children,
12788                             &temp,
12789                             gtk_tree_path_get_depth (path) + 1,
12790                             open_all);
12791
12792   _gtk_tree_view_accessible_add (tree_view, node->children, NULL);
12793   _gtk_tree_view_accessible_add_state (tree_view,
12794                                        tree, node,
12795                                        GTK_CELL_RENDERER_EXPANDED);
12796
12797   if (animate)
12798     {
12799       GtkStyleContext *context;
12800
12801       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12802
12803       gtk_style_context_save (context);
12804       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12805
12806       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12807                                              node, GTK_STATE_ACTIVE, TRUE);
12808
12809       _gtk_style_context_invalidate_animation_areas (context);
12810       gtk_style_context_restore (context);
12811     }
12812
12813   install_presize_handler (tree_view);
12814
12815   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12816   if (open_all && node->children)
12817     {
12818       _gtk_rbtree_traverse (node->children,
12819                             node->children->root,
12820                             G_PRE_ORDER,
12821                             gtk_tree_view_expand_all_emission_helper,
12822                             tree_view);
12823     }
12824   return TRUE;
12825 }
12826
12827
12828 /**
12829  * gtk_tree_view_expand_row:
12830  * @tree_view: a #GtkTreeView
12831  * @path: path to a row
12832  * @open_all: whether to recursively expand, or just expand immediate children
12833  *
12834  * Opens the row so its children are visible.
12835  *
12836  * Return value: %TRUE if the row existed and had children
12837  **/
12838 gboolean
12839 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12840                           GtkTreePath *path,
12841                           gboolean     open_all)
12842 {
12843   GtkRBTree *tree;
12844   GtkRBNode *node;
12845
12846   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12847   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12848   g_return_val_if_fail (path != NULL, FALSE);
12849
12850   if (_gtk_tree_view_find_node (tree_view,
12851                                 path,
12852                                 &tree,
12853                                 &node))
12854     return FALSE;
12855
12856   if (tree != NULL)
12857     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12858   else
12859     return FALSE;
12860 }
12861
12862 static gboolean
12863 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12864                                  GtkTreePath *path,
12865                                  GtkRBTree   *tree,
12866                                  GtkRBNode   *node,
12867                                  gboolean     animate)
12868 {
12869   GtkTreeIter iter;
12870   GtkTreeIter children;
12871   gboolean collapse;
12872   gint x, y;
12873   GList *list;
12874   GdkWindow *child;
12875   gboolean selection_changed, cursor_changed;
12876
12877   if (animate)
12878     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12879                   "gtk-enable-animations", &animate,
12880                   NULL);
12881
12882   remove_auto_expand_timeout (tree_view);
12883
12884   if (node->children == NULL)
12885     return FALSE;
12886   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12887
12888   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12889
12890   if (collapse)
12891     return FALSE;
12892
12893   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12894    * a chance to prelight the correct node below */
12895
12896   if (tree_view->priv->prelight_tree)
12897     {
12898       GtkRBTree *parent_tree;
12899       GtkRBNode *parent_node;
12900
12901       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12902       parent_node = tree_view->priv->prelight_tree->parent_node;
12903       while (parent_tree)
12904         {
12905           if (parent_tree == tree && parent_node == node)
12906             {
12907               ensure_unprelighted (tree_view);
12908               break;
12909             }
12910           parent_node = parent_tree->parent_node;
12911           parent_tree = parent_tree->parent_tree;
12912         }
12913     }
12914
12915   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12916
12917   for (list = tree_view->priv->columns; list; list = list->next)
12918     {
12919       GtkTreeViewColumn *column = list->data;
12920
12921       if (gtk_tree_view_column_get_visible (column) == FALSE)
12922         continue;
12923       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12924         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12925     }
12926
12927   if (tree_view->priv->destroy_count_func)
12928     {
12929       GtkTreePath *child_path;
12930       gint child_count = 0;
12931       child_path = gtk_tree_path_copy (path);
12932       gtk_tree_path_down (child_path);
12933       if (node->children)
12934         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12935       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12936       gtk_tree_path_free (child_path);
12937     }
12938
12939   if (tree_view->priv->cursor_node)
12940     {
12941       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12942                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12943     }
12944   else
12945     cursor_changed = FALSE;
12946
12947   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12948     {
12949       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12950       if (gtk_tree_path_is_ancestor (path, anchor_path))
12951         {
12952           gtk_tree_row_reference_free (tree_view->priv->anchor);
12953           tree_view->priv->anchor = NULL;
12954         }
12955       gtk_tree_path_free (anchor_path);
12956     }
12957
12958   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12959
12960   /* Stop a pending double click */
12961   tree_view->priv->last_button_x = -1;
12962   tree_view->priv->last_button_y = -1;
12963
12964   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12965   _gtk_tree_view_accessible_remove_state (tree_view,
12966                                           tree, node,
12967                                           GTK_CELL_RENDERER_EXPANDED);
12968
12969   _gtk_rbtree_remove (node->children);
12970
12971   if (cursor_changed)
12972     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12973   if (selection_changed)
12974     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12975
12976   if (animate)
12977     {
12978       GtkStyleContext *context;
12979
12980       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12981
12982       gtk_style_context_save (context);
12983       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12984
12985       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12986                                              node, GTK_STATE_ACTIVE, FALSE);
12987
12988       _gtk_style_context_invalidate_animation_areas (context);
12989       gtk_style_context_restore (context);
12990     }
12991
12992   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12993     {
12994       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12995     }
12996
12997   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12998
12999   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
13000     {
13001       /* now that we've collapsed all rows, we want to try to set the prelight
13002        * again. To do this, we fake a motion event and send it to ourselves. */
13003
13004       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
13005                                               gdk_device_manager_get_client_pointer (
13006                                                 gdk_display_get_device_manager (
13007                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
13008                                               &x, &y, NULL);
13009       if (child == tree_view->priv->bin_window)
13010         {
13011           GdkEventMotion event;
13012           gint child_x, child_y;
13013
13014           gdk_window_get_position (child, &child_x, &child_y);
13015
13016           event.window = tree_view->priv->bin_window;
13017           event.x = x - child_x;
13018           event.y = y - child_y;
13019
13020           /* despite the fact this isn't a real event, I'm almost positive it will
13021            * never trigger a drag event.  maybe_drag is the only function that uses
13022            * more than just event.x and event.y. */
13023           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
13024         }
13025     }
13026
13027   return TRUE;
13028 }
13029
13030 /**
13031  * gtk_tree_view_collapse_row:
13032  * @tree_view: a #GtkTreeView
13033  * @path: path to a row in the @tree_view
13034  *
13035  * Collapses a row (hides its child rows, if they exist).
13036  *
13037  * Return value: %TRUE if the row was collapsed.
13038  **/
13039 gboolean
13040 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
13041                             GtkTreePath *path)
13042 {
13043   GtkRBTree *tree;
13044   GtkRBNode *node;
13045
13046   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13047   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13048   g_return_val_if_fail (path != NULL, FALSE);
13049
13050   if (_gtk_tree_view_find_node (tree_view,
13051                                 path,
13052                                 &tree,
13053                                 &node))
13054     return FALSE;
13055
13056   if (tree == NULL || node->children == NULL)
13057     return FALSE;
13058
13059   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13060 }
13061
13062 static void
13063 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13064                                         GtkRBTree              *tree,
13065                                         GtkTreePath            *path,
13066                                         GtkTreeViewMappingFunc  func,
13067                                         gpointer                user_data)
13068 {
13069   GtkRBNode *node;
13070
13071   if (tree == NULL || tree->root == NULL)
13072     return;
13073
13074   node = _gtk_rbtree_first (tree);
13075
13076   while (node)
13077     {
13078       if (node->children)
13079         {
13080           (* func) (tree_view, path, user_data);
13081           gtk_tree_path_down (path);
13082           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13083           gtk_tree_path_up (path);
13084         }
13085       gtk_tree_path_next (path);
13086       node = _gtk_rbtree_next (tree, node);
13087     }
13088 }
13089
13090 /**
13091  * gtk_tree_view_map_expanded_rows:
13092  * @tree_view: A #GtkTreeView
13093  * @func: (scope call): A function to be called
13094  * @data: User data to be passed to the function.
13095  *
13096  * Calls @func on all expanded rows.
13097  **/
13098 void
13099 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13100                                  GtkTreeViewMappingFunc  func,
13101                                  gpointer                user_data)
13102 {
13103   GtkTreePath *path;
13104
13105   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13106   g_return_if_fail (func != NULL);
13107
13108   path = gtk_tree_path_new_first ();
13109
13110   gtk_tree_view_map_expanded_rows_helper (tree_view,
13111                                           tree_view->priv->tree,
13112                                           path, func, user_data);
13113
13114   gtk_tree_path_free (path);
13115 }
13116
13117 /**
13118  * gtk_tree_view_row_expanded:
13119  * @tree_view: A #GtkTreeView.
13120  * @path: A #GtkTreePath to test expansion state.
13121  *
13122  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13123  *
13124  * Return value: %TRUE if #path is expanded.
13125  **/
13126 gboolean
13127 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13128                             GtkTreePath *path)
13129 {
13130   GtkRBTree *tree;
13131   GtkRBNode *node;
13132
13133   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13134   g_return_val_if_fail (path != NULL, FALSE);
13135
13136   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13137
13138   if (node == NULL)
13139     return FALSE;
13140
13141   return (node->children != NULL);
13142 }
13143
13144 /**
13145  * gtk_tree_view_get_reorderable:
13146  * @tree_view: a #GtkTreeView
13147  *
13148  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13149  * gtk_tree_view_set_reorderable().
13150  *
13151  * Return value: %TRUE if the tree can be reordered.
13152  **/
13153 gboolean
13154 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13155 {
13156   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13157
13158   return tree_view->priv->reorderable;
13159 }
13160
13161 /**
13162  * gtk_tree_view_set_reorderable:
13163  * @tree_view: A #GtkTreeView.
13164  * @reorderable: %TRUE, if the tree can be reordered.
13165  *
13166  * This function is a convenience function to allow you to reorder
13167  * models that support the #GtkTreeDragSourceIface and the
13168  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13169  * these.  If @reorderable is %TRUE, then the user can reorder the
13170  * model by dragging and dropping rows. The developer can listen to
13171  * these changes by connecting to the model's row_inserted and
13172  * row_deleted signals. The reordering is implemented by setting up
13173  * the tree view as a drag source and destination. Therefore, drag and
13174  * drop can not be used in a reorderable view for any other purpose.
13175  *
13176  * This function does not give you any degree of control over the order -- any
13177  * reordering is allowed.  If more control is needed, you should probably
13178  * handle drag and drop manually.
13179  **/
13180 void
13181 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13182                                gboolean     reorderable)
13183 {
13184   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13185
13186   reorderable = reorderable != FALSE;
13187
13188   if (tree_view->priv->reorderable == reorderable)
13189     return;
13190
13191   if (reorderable)
13192     {
13193       const GtkTargetEntry row_targets[] = {
13194         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13195       };
13196
13197       gtk_tree_view_enable_model_drag_source (tree_view,
13198                                               GDK_BUTTON1_MASK,
13199                                               row_targets,
13200                                               G_N_ELEMENTS (row_targets),
13201                                               GDK_ACTION_MOVE);
13202       gtk_tree_view_enable_model_drag_dest (tree_view,
13203                                             row_targets,
13204                                             G_N_ELEMENTS (row_targets),
13205                                             GDK_ACTION_MOVE);
13206     }
13207   else
13208     {
13209       gtk_tree_view_unset_rows_drag_source (tree_view);
13210       gtk_tree_view_unset_rows_drag_dest (tree_view);
13211     }
13212
13213   tree_view->priv->reorderable = reorderable;
13214
13215   g_object_notify (G_OBJECT (tree_view), "reorderable");
13216 }
13217
13218 static void
13219 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13220                                GtkTreePath     *path,
13221                                SetCursorFlags   flags)
13222 {
13223   if (!(flags & CURSOR_INVALID) && tree_view->priv->cursor_node)
13224     {
13225       _gtk_tree_view_accessible_remove_state (tree_view,
13226                                               tree_view->priv->cursor_tree,
13227                                               tree_view->priv->cursor_node,
13228                                               GTK_CELL_RENDERER_FOCUSED);
13229       _gtk_tree_view_queue_draw_node (tree_view,
13230                                       tree_view->priv->cursor_tree,
13231                                       tree_view->priv->cursor_node,
13232                                       NULL);
13233     }
13234
13235   /* One cannot set the cursor on a separator.   Also, if
13236    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13237    * before finding the tree and node belonging to path.  The
13238    * path maps to a non-existing path and we will silently bail out.
13239    * We unset tree and node to avoid further processing.
13240    */
13241   if (path == NULL ||
13242       row_is_separator (tree_view, NULL, path)
13243       || _gtk_tree_view_find_node (tree_view,
13244                                    path,
13245                                    &tree_view->priv->cursor_tree,
13246                                    &tree_view->priv->cursor_node))
13247     {
13248       tree_view->priv->cursor_tree = NULL;
13249       tree_view->priv->cursor_node = NULL;
13250     }
13251
13252   if (tree_view->priv->cursor_node != NULL)
13253     {
13254       GtkRBTree *new_tree = NULL;
13255       GtkRBNode *new_node = NULL;
13256
13257       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13258         {
13259           GtkTreeSelectMode mode = 0;
13260
13261           if (tree_view->priv->extend_selection_pressed)
13262             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13263
13264           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13265                                                     tree_view->priv->cursor_node,
13266                                                     tree_view->priv->cursor_tree,
13267                                                     path,
13268                                                     mode,
13269                                                     FALSE);
13270         }
13271
13272       /* We have to re-find tree and node here again, somebody might have
13273        * cleared the node or the whole tree in the GtkTreeSelection::changed
13274        * callback. If the nodes differ we bail out here.
13275        */
13276       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13277
13278       if (tree_view->priv->cursor_node != new_node)
13279         return;
13280
13281       if (flags & CLAMP_NODE)
13282         {
13283           gtk_tree_view_clamp_node_visible (tree_view,
13284                                             tree_view->priv->cursor_tree,
13285                                             tree_view->priv->cursor_node);
13286           _gtk_tree_view_queue_draw_node (tree_view,
13287                                           tree_view->priv->cursor_tree,
13288                                           tree_view->priv->cursor_node,
13289                                           NULL);
13290         }
13291
13292       _gtk_tree_view_accessible_add_state (tree_view,
13293                                            tree_view->priv->cursor_tree,
13294                                            tree_view->priv->cursor_node,
13295                                            GTK_CELL_RENDERER_FOCUSED);
13296     }
13297
13298   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13299 }
13300
13301 /**
13302  * gtk_tree_view_get_cursor:
13303  * @tree_view: A #GtkTreeView
13304  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13305  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13306  *
13307  * Fills in @path and @focus_column with the current path and focus column.  If
13308  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13309  * currently has focus, then *@focus_column will be %NULL.
13310  *
13311  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13312  * you are done with it.
13313  **/
13314 void
13315 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13316                           GtkTreePath       **path,
13317                           GtkTreeViewColumn **focus_column)
13318 {
13319   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13320
13321   if (path)
13322     {
13323       if (tree_view->priv->cursor_node)
13324         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13325                                                 tree_view->priv->cursor_node);
13326       else
13327         *path = NULL;
13328     }
13329
13330   if (focus_column)
13331     {
13332       *focus_column = tree_view->priv->focus_column;
13333     }
13334 }
13335
13336 /**
13337  * gtk_tree_view_set_cursor:
13338  * @tree_view: A #GtkTreeView
13339  * @path: A #GtkTreePath
13340  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13341  * @start_editing: %TRUE if the specified cell should start being edited.
13342  *
13343  * Sets the current keyboard focus to be at @path, and selects it.  This is
13344  * useful when you want to focus the user's attention on a particular row.  If
13345  * @focus_column is not %NULL, then focus is given to the column specified by
13346  * it. Additionally, if @focus_column is specified, and @start_editing is
13347  * %TRUE, then editing should be started in the specified cell.
13348  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13349  * in order to give keyboard focus to the widget.  Please note that editing
13350  * can only happen when the widget is realized.
13351  *
13352  * If @path is invalid for @model, the current cursor (if any) will be unset
13353  * and the function will return without failing.
13354  **/
13355 void
13356 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13357                           GtkTreePath       *path,
13358                           GtkTreeViewColumn *focus_column,
13359                           gboolean           start_editing)
13360 {
13361   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13362                                     NULL, start_editing);
13363 }
13364
13365 /**
13366  * gtk_tree_view_set_cursor_on_cell:
13367  * @tree_view: A #GtkTreeView
13368  * @path: A #GtkTreePath
13369  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13370  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13371  * @start_editing: %TRUE if the specified cell should start being edited.
13372  *
13373  * Sets the current keyboard focus to be at @path, and selects it.  This is
13374  * useful when you want to focus the user's attention on a particular row.  If
13375  * @focus_column is not %NULL, then focus is given to the column specified by
13376  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13377  * contains 2 or more editable or activatable cells, then focus is given to
13378  * the cell specified by @focus_cell. Additionally, if @focus_column is
13379  * specified, and @start_editing is %TRUE, then editing should be started in
13380  * the specified cell.  This function is often followed by
13381  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13382  * widget.  Please note that editing can only happen when the widget is
13383  * realized.
13384  *
13385  * If @path is invalid for @model, the current cursor (if any) will be unset
13386  * and the function will return without failing.
13387  *
13388  * Since: 2.2
13389  **/
13390 void
13391 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13392                                   GtkTreePath       *path,
13393                                   GtkTreeViewColumn *focus_column,
13394                                   GtkCellRenderer   *focus_cell,
13395                                   gboolean           start_editing)
13396 {
13397   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13398   g_return_if_fail (path != NULL);
13399   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13400
13401   if (!tree_view->priv->model)
13402     return;
13403
13404   if (focus_cell)
13405     {
13406       g_return_if_fail (focus_column);
13407       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13408     }
13409
13410   /* cancel the current editing, if it exists */
13411   if (tree_view->priv->edited_column &&
13412       gtk_cell_area_get_edit_widget
13413       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13414     gtk_tree_view_stop_editing (tree_view, TRUE);
13415
13416   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13417
13418   if (focus_column &&
13419       gtk_tree_view_column_get_visible (focus_column))
13420     {
13421       GList *list;
13422       gboolean column_in_tree = FALSE;
13423
13424       for (list = tree_view->priv->columns; list; list = list->next)
13425         if (list->data == focus_column)
13426           {
13427             column_in_tree = TRUE;
13428             break;
13429           }
13430       g_return_if_fail (column_in_tree);
13431       _gtk_tree_view_set_focus_column (tree_view, focus_column);
13432       if (focus_cell)
13433         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13434       if (start_editing)
13435         gtk_tree_view_start_editing (tree_view, path, TRUE);
13436     }
13437 }
13438
13439 /**
13440  * gtk_tree_view_get_bin_window:
13441  * @tree_view: A #GtkTreeView
13442  *
13443  * Returns the window that @tree_view renders to.
13444  * This is used primarily to compare to <literal>event->window</literal>
13445  * to confirm that the event on @tree_view is on the right window.
13446  *
13447  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13448  *     hasn't been realized yet
13449  **/
13450 GdkWindow *
13451 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13452 {
13453   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13454
13455   return tree_view->priv->bin_window;
13456 }
13457
13458 /**
13459  * gtk_tree_view_get_path_at_pos:
13460  * @tree_view: A #GtkTreeView.
13461  * @x: The x position to be identified (relative to bin_window).
13462  * @y: The y position to be identified (relative to bin_window).
13463  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13464  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13465  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13466  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13467  *
13468  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13469  * (please see gtk_tree_view_get_bin_window()).
13470  * That is, @x and @y are relative to an events coordinates. @x and @y must
13471  * come from an event on the @tree_view only where <literal>event->window ==
13472  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13473  * things like popup menus. If @path is non-%NULL, then it will be filled
13474  * with the #GtkTreePath at that point.  This path should be freed with
13475  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13476  * with the column at that point.  @cell_x and @cell_y return the coordinates
13477  * relative to the cell background (i.e. the @background_area passed to
13478  * gtk_cell_renderer_render()).  This function is only meaningful if
13479  * @tree_view is realized.  Therefore this function will always return %FALSE
13480  * if @tree_view is not realized or does not have a model.
13481  *
13482  * For converting widget coordinates (eg. the ones you get from
13483  * GtkWidget::query-tooltip), please see
13484  * gtk_tree_view_convert_widget_to_bin_window_coords().
13485  *
13486  * Return value: %TRUE if a row exists at that coordinate.
13487  **/
13488 gboolean
13489 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13490                                gint                x,
13491                                gint                y,
13492                                GtkTreePath       **path,
13493                                GtkTreeViewColumn **column,
13494                                gint               *cell_x,
13495                                gint               *cell_y)
13496 {
13497   GtkRBTree *tree;
13498   GtkRBNode *node;
13499   gint y_offset;
13500
13501   g_return_val_if_fail (tree_view != NULL, FALSE);
13502
13503   if (path)
13504     *path = NULL;
13505   if (column)
13506     *column = NULL;
13507
13508   if (tree_view->priv->bin_window == NULL)
13509     return FALSE;
13510
13511   if (tree_view->priv->tree == NULL)
13512     return FALSE;
13513
13514   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13515     return FALSE;
13516
13517   if (x < 0 || y < 0)
13518     return FALSE;
13519
13520   if (column || cell_x)
13521     {
13522       GtkTreeViewColumn *tmp_column;
13523       GtkTreeViewColumn *last_column = NULL;
13524       GList *list;
13525       gint remaining_x = x;
13526       gboolean found = FALSE;
13527       gboolean rtl;
13528       gint width;
13529
13530       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13531       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13532            list;
13533            list = (rtl ? list->prev : list->next))
13534         {
13535           tmp_column = list->data;
13536
13537           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13538             continue;
13539
13540           last_column = tmp_column;
13541           width = gtk_tree_view_column_get_width (tmp_column);
13542           if (remaining_x <= width)
13543             {
13544               found = TRUE;
13545
13546               if (column)
13547                 *column = tmp_column;
13548
13549               if (cell_x)
13550                 *cell_x = remaining_x;
13551
13552               break;
13553             }
13554           remaining_x -= width;
13555         }
13556
13557       /* If found is FALSE and there is a last_column, then it the remainder
13558        * space is in that area
13559        */
13560       if (!found)
13561         {
13562           if (last_column)
13563             {
13564               if (column)
13565                 *column = last_column;
13566
13567               if (cell_x)
13568                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13569             }
13570           else
13571             {
13572               return FALSE;
13573             }
13574         }
13575     }
13576
13577   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13578                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13579                                       &tree, &node);
13580
13581   if (tree == NULL)
13582     return FALSE;
13583
13584   if (cell_y)
13585     *cell_y = y_offset;
13586
13587   if (path)
13588     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13589
13590   return TRUE;
13591 }
13592
13593
13594 static inline gint
13595 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13596                                     GtkRBNode   *node,
13597                                     gint         vertical_separator)
13598 {
13599   int expander_size = gtk_tree_view_get_expander_size (tree_view);
13600   int height;
13601
13602   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13603    * i.e. just the cells, no spacing.
13604    *
13605    * The cell area height is at least expander_size - vertical_separator.
13606    * For regular nodes, the height is then at least expander_size. We should
13607    * be able to enforce the expander_size minimum here, because this
13608    * function will not be called for irregular (e.g. separator) rows.
13609    */
13610   height = gtk_tree_view_get_row_height (tree_view, node);
13611   if (height < expander_size)
13612     height = expander_size;
13613
13614   return height - vertical_separator;
13615 }
13616
13617 static inline gint
13618 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13619                                       GtkRBTree   *tree,
13620                                       GtkRBNode   *node,
13621                                       gint         vertical_separator)
13622 {
13623   int offset;
13624
13625   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13626   offset += vertical_separator / 2;
13627
13628   return offset;
13629 }
13630
13631 /**
13632  * gtk_tree_view_get_cell_area:
13633  * @tree_view: a #GtkTreeView
13634  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13635  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13636  * @rect: (out): rectangle to fill with cell rect
13637  *
13638  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13639  * row specified by @path and the column specified by @column.  If @path is
13640  * %NULL, or points to a path not currently displayed, the @y and @height fields
13641  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13642  * fields will be filled with 0.  The sum of all cell rects does not cover the
13643  * entire tree; there are extra pixels in between rows, for example. The
13644  * returned rectangle is equivalent to the @cell_area passed to
13645  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13646  * realized.
13647  **/
13648 void
13649 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13650                              GtkTreePath        *path,
13651                              GtkTreeViewColumn  *column,
13652                              GdkRectangle       *rect)
13653 {
13654   GtkRBTree *tree = NULL;
13655   GtkRBNode *node = NULL;
13656   gint vertical_separator;
13657   gint horizontal_separator;
13658
13659   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13660   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13661   g_return_if_fail (rect != NULL);
13662   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13663   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13664
13665   gtk_widget_style_get (GTK_WIDGET (tree_view),
13666                         "vertical-separator", &vertical_separator,
13667                         "horizontal-separator", &horizontal_separator,
13668                         NULL);
13669
13670   rect->x = 0;
13671   rect->y = 0;
13672   rect->width = 0;
13673   rect->height = 0;
13674
13675   if (column)
13676     {
13677       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13678       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13679     }
13680
13681   if (path)
13682     {
13683       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13684
13685       /* Get vertical coords */
13686       if ((!ret && tree == NULL) || ret)
13687         return;
13688
13689       if (row_is_separator (tree_view, NULL, path))
13690         {
13691           /* There isn't really a "cell area" for separator, so we
13692            * return the y, height values for background area instead.
13693            */
13694           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13695           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13696         }
13697       else
13698         {
13699           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13700                                                           vertical_separator);
13701           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13702                                                              vertical_separator);
13703         }
13704
13705       if (column &&
13706           gtk_tree_view_is_expander_column (tree_view, column))
13707         {
13708           gint depth = gtk_tree_path_get_depth (path);
13709           gboolean rtl;
13710
13711           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13712
13713           if (!rtl)
13714             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13715           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13716
13717           if (gtk_tree_view_draw_expanders (tree_view))
13718             {
13719               int expander_size = gtk_tree_view_get_expander_size (tree_view);
13720               if (!rtl)
13721                 rect->x += depth * expander_size;
13722               rect->width -= depth * expander_size;
13723             }
13724
13725           rect->width = MAX (rect->width, 0);
13726         }
13727     }
13728 }
13729
13730 static inline gint
13731 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13732                               GtkRBNode   *node)
13733 {
13734   int expander_size = gtk_tree_view_get_expander_size (tree_view);
13735   int height;
13736
13737   /* The "background" areas of all rows/cells add up to cover the entire tree.
13738    * The background includes all inter-row and inter-cell spacing.
13739    *
13740    * If the row pointed at by node does not have a height set, we default
13741    * to expander_size, which is the minimum height for regular nodes.
13742    * Non-regular nodes (e.g. separators) can have a height set smaller
13743    * than expander_size and should not be overruled here.
13744    */
13745   height = GTK_RBNODE_GET_HEIGHT (node);
13746   if (height <= 0)
13747     height = expander_size;
13748
13749   return height;
13750 }
13751
13752 static inline gint
13753 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13754                                 GtkRBTree   *tree,
13755                                 GtkRBNode   *node)
13756 {
13757   int offset;
13758
13759   offset = _gtk_rbtree_node_find_offset (tree, node);
13760
13761   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13762 }
13763
13764 /**
13765  * gtk_tree_view_get_background_area:
13766  * @tree_view: a #GtkTreeView
13767  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13768  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13769  * @rect: (out): rectangle to fill with cell background rect
13770  *
13771  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13772  * row specified by @path and the column specified by @column.  If @path is
13773  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13774  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13775  * fields will be filled with 0.  The returned rectangle is equivalent to the
13776  * @background_area passed to gtk_cell_renderer_render().  These background
13777  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13778  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13779  * itself, excluding surrounding borders and the tree expander area.
13780  *
13781  **/
13782 void
13783 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13784                                    GtkTreePath        *path,
13785                                    GtkTreeViewColumn  *column,
13786                                    GdkRectangle       *rect)
13787 {
13788   GtkRBTree *tree = NULL;
13789   GtkRBNode *node = NULL;
13790
13791   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13792   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13793   g_return_if_fail (rect != NULL);
13794
13795   rect->x = 0;
13796   rect->y = 0;
13797   rect->width = 0;
13798   rect->height = 0;
13799
13800   if (path)
13801     {
13802       /* Get vertical coords */
13803
13804       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13805           tree == NULL)
13806         return;
13807
13808       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13809       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13810     }
13811
13812   if (column)
13813     {
13814       gint x2 = 0;
13815
13816       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13817       rect->width = x2 - rect->x;
13818     }
13819 }
13820
13821 /**
13822  * gtk_tree_view_get_visible_rect:
13823  * @tree_view: a #GtkTreeView
13824  * @visible_rect: (out): rectangle to fill
13825  *
13826  * Fills @visible_rect with the currently-visible region of the
13827  * buffer, in tree coordinates. Convert to bin_window coordinates with
13828  * gtk_tree_view_convert_tree_to_bin_window_coords().
13829  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13830  * scrollable area of the tree.
13831  **/
13832 void
13833 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13834                                 GdkRectangle *visible_rect)
13835 {
13836   GtkAllocation allocation;
13837   GtkWidget *widget;
13838
13839   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13840
13841   widget = GTK_WIDGET (tree_view);
13842
13843   if (visible_rect)
13844     {
13845       gtk_widget_get_allocation (widget, &allocation);
13846       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13847       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13848       visible_rect->width = allocation.width;
13849       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13850     }
13851 }
13852
13853 /**
13854  * gtk_tree_view_convert_widget_to_tree_coords:
13855  * @tree_view: a #GtkTreeView
13856  * @wx: X coordinate relative to the widget
13857  * @wy: Y coordinate relative to the widget
13858  * @tx: (out): return location for tree X coordinate
13859  * @ty: (out): return location for tree Y coordinate
13860  *
13861  * Converts widget coordinates to coordinates for the
13862  * tree (the full scrollable area of the tree).
13863  *
13864  * Since: 2.12
13865  **/
13866 void
13867 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13868                                              gint         wx,
13869                                              gint         wy,
13870                                              gint        *tx,
13871                                              gint        *ty)
13872 {
13873   gint x, y;
13874
13875   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13876
13877   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13878                                                      wx, wy,
13879                                                      &x, &y);
13880   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13881                                                    x, y,
13882                                                    tx, ty);
13883 }
13884
13885 /**
13886  * gtk_tree_view_convert_tree_to_widget_coords:
13887  * @tree_view: a #GtkTreeView
13888  * @tx: X coordinate relative to the tree
13889  * @ty: Y coordinate relative to the tree
13890  * @wx: (out): return location for widget X coordinate
13891  * @wy: (out): return location for widget Y coordinate
13892  *
13893  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13894  * to widget coordinates.
13895  *
13896  * Since: 2.12
13897  **/
13898 void
13899 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13900                                              gint         tx,
13901                                              gint         ty,
13902                                              gint        *wx,
13903                                              gint        *wy)
13904 {
13905   gint x, y;
13906
13907   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13908
13909   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13910                                                    tx, ty,
13911                                                    &x, &y);
13912   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13913                                                      x, y,
13914                                                      wx, wy);
13915 }
13916
13917 /**
13918  * gtk_tree_view_convert_widget_to_bin_window_coords:
13919  * @tree_view: a #GtkTreeView
13920  * @wx: X coordinate relative to the widget
13921  * @wy: Y coordinate relative to the widget
13922  * @bx: (out): return location for bin_window X coordinate
13923  * @by: (out): return location for bin_window Y coordinate
13924  *
13925  * Converts widget coordinates to coordinates for the bin_window
13926  * (see gtk_tree_view_get_bin_window()).
13927  *
13928  * Since: 2.12
13929  **/
13930 void
13931 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13932                                                    gint         wx,
13933                                                    gint         wy,
13934                                                    gint        *bx,
13935                                                    gint        *by)
13936 {
13937   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13938
13939   if (bx)
13940     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13941   if (by)
13942     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13943 }
13944
13945 /**
13946  * gtk_tree_view_convert_bin_window_to_widget_coords:
13947  * @tree_view: a #GtkTreeView
13948  * @bx: bin_window X coordinate
13949  * @by: bin_window Y coordinate
13950  * @wx: (out): return location for widget X coordinate
13951  * @wy: (out): return location for widget Y coordinate
13952  *
13953  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13954  * to widget relative coordinates.
13955  *
13956  * Since: 2.12
13957  **/
13958 void
13959 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13960                                                    gint         bx,
13961                                                    gint         by,
13962                                                    gint        *wx,
13963                                                    gint        *wy)
13964 {
13965   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13966
13967   if (wx)
13968     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13969   if (wy)
13970     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13971 }
13972
13973 /**
13974  * gtk_tree_view_convert_tree_to_bin_window_coords:
13975  * @tree_view: a #GtkTreeView
13976  * @tx: tree X coordinate
13977  * @ty: tree Y coordinate
13978  * @bx: (out): return location for X coordinate relative to bin_window
13979  * @by: (out): return location for Y coordinate relative to bin_window
13980  *
13981  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13982  * to bin_window coordinates.
13983  *
13984  * Since: 2.12
13985  **/
13986 void
13987 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13988                                                  gint         tx,
13989                                                  gint         ty,
13990                                                  gint        *bx,
13991                                                  gint        *by)
13992 {
13993   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13994
13995   if (bx)
13996     *bx = tx;
13997   if (by)
13998     *by = ty - tree_view->priv->dy;
13999 }
14000
14001 /**
14002  * gtk_tree_view_convert_bin_window_to_tree_coords:
14003  * @tree_view: a #GtkTreeView
14004  * @bx: X coordinate relative to bin_window
14005  * @by: Y coordinate relative to bin_window
14006  * @tx: (out): return location for tree X coordinate
14007  * @ty: (out): return location for tree Y coordinate
14008  *
14009  * Converts bin_window coordinates to coordinates for the
14010  * tree (the full scrollable area of the tree).
14011  *
14012  * Since: 2.12
14013  **/
14014 void
14015 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
14016                                                  gint         bx,
14017                                                  gint         by,
14018                                                  gint        *tx,
14019                                                  gint        *ty)
14020 {
14021   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14022
14023   if (tx)
14024     *tx = bx;
14025   if (ty)
14026     *ty = by + tree_view->priv->dy;
14027 }
14028
14029
14030
14031 /**
14032  * gtk_tree_view_get_visible_range:
14033  * @tree_view: A #GtkTreeView
14034  * @start_path: (out) (allow-none): Return location for start of region,
14035  *              or %NULL.
14036  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
14037  *
14038  * Sets @start_path and @end_path to be the first and last visible path.
14039  * Note that there may be invisible paths in between.
14040  *
14041  * The paths should be freed with gtk_tree_path_free() after use.
14042  *
14043  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
14044  *
14045  * Since: 2.8
14046  **/
14047 gboolean
14048 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
14049                                  GtkTreePath **start_path,
14050                                  GtkTreePath **end_path)
14051 {
14052   GtkRBTree *tree;
14053   GtkRBNode *node;
14054   gboolean retval;
14055
14056   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14057
14058   if (!tree_view->priv->tree)
14059     return FALSE;
14060
14061   retval = TRUE;
14062
14063   if (start_path)
14064     {
14065       _gtk_rbtree_find_offset (tree_view->priv->tree,
14066                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14067                                &tree, &node);
14068       if (node)
14069         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
14070       else
14071         retval = FALSE;
14072     }
14073
14074   if (end_path)
14075     {
14076       gint y;
14077
14078       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14079         y = tree_view->priv->height - 1;
14080       else
14081         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14082
14083       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14084       if (node)
14085         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14086       else
14087         retval = FALSE;
14088     }
14089
14090   return retval;
14091 }
14092
14093 /**
14094  * gtk_tree_view_is_blank_at_pos:
14095  * @tree_view: A #GtkTreeView
14096  * @x: The x position to be identified (relative to bin_window)
14097  * @y: The y position to be identified (relative to bin_window)
14098  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14099  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14100  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14101  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14102  *
14103  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14104  * cell content nor an expander arrow is drawn at the location. If so, the
14105  * location can be considered as the background. You might wish to take
14106  * special action on clicks on the background, such as clearing a current
14107  * selection, having a custom context menu or starting rubber banding.
14108  *
14109  * The @x and @y coordinate that are provided must be relative to bin_window
14110  * coordinates.  That is, @x and @y must come from an event on @tree_view
14111  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14112  *
14113  * For converting widget coordinates (eg. the ones you get from
14114  * GtkWidget::query-tooltip), please see
14115  * gtk_tree_view_convert_widget_to_bin_window_coords().
14116  *
14117  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14118  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14119  * gtk_tree_view_get_path_at_pos() for more information.
14120  *
14121  * Return value: %TRUE if the area at the given coordinates is blank,
14122  * %FALSE otherwise.
14123  *
14124  * Since: 3.0
14125  */
14126 gboolean
14127 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14128                                gint                x,
14129                                gint                y,
14130                                GtkTreePath       **path,
14131                                GtkTreeViewColumn **column,
14132                                gint               *cell_x,
14133                                gint               *cell_y)
14134 {
14135   GtkRBTree *tree;
14136   GtkRBNode *node;
14137   GtkTreeIter iter;
14138   GtkTreePath *real_path;
14139   GtkTreeViewColumn *real_column;
14140   GdkRectangle cell_area, background_area;
14141
14142   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14143
14144   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14145                                       &real_path, &real_column,
14146                                       cell_x, cell_y))
14147     /* If there's no path here, it is blank */
14148     return TRUE;
14149
14150   if (path)
14151     *path = real_path;
14152
14153   if (column)
14154     *column = real_column;
14155
14156   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14157   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14158
14159   /* Check if there's an expander arrow at (x, y) */
14160   if (real_column == tree_view->priv->expander_column
14161       && gtk_tree_view_draw_expanders (tree_view))
14162     {
14163       gboolean over_arrow;
14164
14165       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14166
14167       if (over_arrow)
14168         {
14169           if (!path)
14170             gtk_tree_path_free (real_path);
14171           return FALSE;
14172         }
14173     }
14174
14175   /* Otherwise, have the column see if there's a cell at (x, y) */
14176   gtk_tree_view_column_cell_set_cell_data (real_column,
14177                                            tree_view->priv->model,
14178                                            &iter,
14179                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14180                                            node->children ? TRUE : FALSE);
14181
14182   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14183                                      &background_area);
14184   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14185                                &cell_area);
14186
14187   if (!path)
14188     gtk_tree_path_free (real_path);
14189
14190   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14191                                                 &cell_area,
14192                                                 &background_area,
14193                                                 x, y);
14194 }
14195
14196 static void
14197 unset_reorderable (GtkTreeView *tree_view)
14198 {
14199   if (tree_view->priv->reorderable)
14200     {
14201       tree_view->priv->reorderable = FALSE;
14202       g_object_notify (G_OBJECT (tree_view), "reorderable");
14203     }
14204 }
14205
14206 /**
14207  * gtk_tree_view_enable_model_drag_source:
14208  * @tree_view: a #GtkTreeView
14209  * @start_button_mask: Mask of allowed buttons to start drag
14210  * @targets: (array length=n_targets): the table of targets that the drag will support
14211  * @n_targets: the number of items in @targets
14212  * @actions: the bitmask of possible actions for a drag from this
14213  *    widget
14214  *
14215  * Turns @tree_view into a drag source for automatic DND. Calling this
14216  * method sets #GtkTreeView:reorderable to %FALSE.
14217  **/
14218 void
14219 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14220                                         GdkModifierType           start_button_mask,
14221                                         const GtkTargetEntry     *targets,
14222                                         gint                      n_targets,
14223                                         GdkDragAction             actions)
14224 {
14225   TreeViewDragInfo *di;
14226
14227   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14228
14229   gtk_drag_source_set (GTK_WIDGET (tree_view),
14230                        0,
14231                        targets,
14232                        n_targets,
14233                        actions);
14234
14235   di = ensure_info (tree_view);
14236
14237   di->start_button_mask = start_button_mask;
14238   di->source_actions = actions;
14239   di->source_set = TRUE;
14240
14241   unset_reorderable (tree_view);
14242 }
14243
14244 /**
14245  * gtk_tree_view_enable_model_drag_dest:
14246  * @tree_view: a #GtkTreeView
14247  * @targets: (array length=n_targets): the table of targets that
14248  *           the drag will support
14249  * @n_targets: the number of items in @targets
14250  * @actions: the bitmask of possible actions for a drag from this
14251  *    widget
14252  *
14253  * Turns @tree_view into a drop destination for automatic DND. Calling
14254  * this method sets #GtkTreeView:reorderable to %FALSE.
14255  **/
14256 void
14257 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14258                                       const GtkTargetEntry     *targets,
14259                                       gint                      n_targets,
14260                                       GdkDragAction             actions)
14261 {
14262   TreeViewDragInfo *di;
14263
14264   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14265
14266   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14267                      0,
14268                      targets,
14269                      n_targets,
14270                      actions);
14271
14272   di = ensure_info (tree_view);
14273   di->dest_set = TRUE;
14274
14275   unset_reorderable (tree_view);
14276 }
14277
14278 /**
14279  * gtk_tree_view_unset_rows_drag_source:
14280  * @tree_view: a #GtkTreeView
14281  *
14282  * Undoes the effect of
14283  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14284  * #GtkTreeView:reorderable to %FALSE.
14285  **/
14286 void
14287 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14288 {
14289   TreeViewDragInfo *di;
14290
14291   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14292
14293   di = get_info (tree_view);
14294
14295   if (di)
14296     {
14297       if (di->source_set)
14298         {
14299           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14300           di->source_set = FALSE;
14301         }
14302
14303       if (!di->dest_set && !di->source_set)
14304         remove_info (tree_view);
14305     }
14306
14307   unset_reorderable (tree_view);
14308 }
14309
14310 /**
14311  * gtk_tree_view_unset_rows_drag_dest:
14312  * @tree_view: a #GtkTreeView
14313  *
14314  * Undoes the effect of
14315  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14316  * #GtkTreeView:reorderable to %FALSE.
14317  **/
14318 void
14319 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14320 {
14321   TreeViewDragInfo *di;
14322
14323   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14324
14325   di = get_info (tree_view);
14326
14327   if (di)
14328     {
14329       if (di->dest_set)
14330         {
14331           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14332           di->dest_set = FALSE;
14333         }
14334
14335       if (!di->dest_set && !di->source_set)
14336         remove_info (tree_view);
14337     }
14338
14339   unset_reorderable (tree_view);
14340 }
14341
14342 /**
14343  * gtk_tree_view_set_drag_dest_row:
14344  * @tree_view: a #GtkTreeView
14345  * @path: (allow-none): The path of the row to highlight, or %NULL
14346  * @pos: Specifies whether to drop before, after or into the row
14347  *
14348  * Sets the row that is highlighted for feedback.
14349  * If @path is %NULL, an existing highlight is removed.
14350  */
14351 void
14352 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14353                                  GtkTreePath            *path,
14354                                  GtkTreeViewDropPosition pos)
14355 {
14356   GtkTreePath *current_dest;
14357
14358   /* Note; this function is exported to allow a custom DND
14359    * implementation, so it can't touch TreeViewDragInfo
14360    */
14361
14362   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14363
14364   current_dest = NULL;
14365
14366   if (tree_view->priv->drag_dest_row)
14367     {
14368       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14369       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14370     }
14371
14372   /* special case a drop on an empty model */
14373   tree_view->priv->empty_view_drop = 0;
14374
14375   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14376       && gtk_tree_path_get_depth (path) == 1
14377       && gtk_tree_path_get_indices (path)[0] == 0)
14378     {
14379       gint n_children;
14380
14381       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14382                                                    NULL);
14383
14384       if (!n_children)
14385         tree_view->priv->empty_view_drop = 1;
14386     }
14387
14388   tree_view->priv->drag_dest_pos = pos;
14389
14390   if (path)
14391     {
14392       tree_view->priv->drag_dest_row =
14393         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14394       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14395     }
14396   else
14397     tree_view->priv->drag_dest_row = NULL;
14398
14399   if (current_dest)
14400     {
14401       GtkRBTree *tree, *new_tree;
14402       GtkRBNode *node, *new_node;
14403
14404       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14405       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14406
14407       if (tree && node)
14408         {
14409           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14410           if (new_tree && new_node)
14411             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14412
14413           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14414           if (new_tree && new_node)
14415             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14416         }
14417       gtk_tree_path_free (current_dest);
14418     }
14419 }
14420
14421 /**
14422  * gtk_tree_view_get_drag_dest_row:
14423  * @tree_view: a #GtkTreeView
14424  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14425  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14426  *
14427  * Gets information about the row that is highlighted for feedback.
14428  **/
14429 void
14430 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14431                                  GtkTreePath             **path,
14432                                  GtkTreeViewDropPosition  *pos)
14433 {
14434   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14435
14436   if (path)
14437     {
14438       if (tree_view->priv->drag_dest_row)
14439         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14440       else
14441         {
14442           if (tree_view->priv->empty_view_drop)
14443             *path = gtk_tree_path_new_from_indices (0, -1);
14444           else
14445             *path = NULL;
14446         }
14447     }
14448
14449   if (pos)
14450     *pos = tree_view->priv->drag_dest_pos;
14451 }
14452
14453 /**
14454  * gtk_tree_view_get_dest_row_at_pos:
14455  * @tree_view: a #GtkTreeView
14456  * @drag_x: the position to determine the destination row for
14457  * @drag_y: the position to determine the destination row for
14458  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14459  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14460  *
14461  * Determines the destination row for a given position.  @drag_x and
14462  * @drag_y are expected to be in widget coordinates.  This function is only
14463  * meaningful if @tree_view is realized.  Therefore this function will always
14464  * return %FALSE if @tree_view is not realized or does not have a model.
14465  *
14466  * Return value: whether there is a row at the given position, %TRUE if this
14467  * is indeed the case.
14468  **/
14469 gboolean
14470 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14471                                    gint                     drag_x,
14472                                    gint                     drag_y,
14473                                    GtkTreePath            **path,
14474                                    GtkTreeViewDropPosition *pos)
14475 {
14476   gint cell_y;
14477   gint bin_x, bin_y;
14478   gdouble offset_into_row;
14479   gdouble third;
14480   GdkRectangle cell;
14481   GtkTreeViewColumn *column = NULL;
14482   GtkTreePath *tmp_path = NULL;
14483
14484   /* Note; this function is exported to allow a custom DND
14485    * implementation, so it can't touch TreeViewDragInfo
14486    */
14487
14488   g_return_val_if_fail (tree_view != NULL, FALSE);
14489   g_return_val_if_fail (drag_x >= 0, FALSE);
14490   g_return_val_if_fail (drag_y >= 0, FALSE);
14491
14492   if (path)
14493     *path = NULL;
14494
14495   if (tree_view->priv->bin_window == NULL)
14496     return FALSE;
14497
14498   if (tree_view->priv->tree == NULL)
14499     return FALSE;
14500
14501   /* If in the top third of a row, we drop before that row; if
14502    * in the bottom third, drop after that row; if in the middle,
14503    * and the row has children, drop into the row.
14504    */
14505   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14506                                                      &bin_x, &bin_y);
14507
14508   if (!gtk_tree_view_get_path_at_pos (tree_view,
14509                                       bin_x,
14510                                       bin_y,
14511                                       &tmp_path,
14512                                       &column,
14513                                       NULL,
14514                                       &cell_y))
14515     return FALSE;
14516
14517   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14518                                      &cell);
14519
14520   offset_into_row = cell_y;
14521
14522   if (path)
14523     *path = tmp_path;
14524   else
14525     gtk_tree_path_free (tmp_path);
14526
14527   tmp_path = NULL;
14528
14529   third = cell.height / 3.0;
14530
14531   if (pos)
14532     {
14533       if (offset_into_row < third)
14534         {
14535           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14536         }
14537       else if (offset_into_row < (cell.height / 2.0))
14538         {
14539           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14540         }
14541       else if (offset_into_row < third * 2.0)
14542         {
14543           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14544         }
14545       else
14546         {
14547           *pos = GTK_TREE_VIEW_DROP_AFTER;
14548         }
14549     }
14550
14551   return TRUE;
14552 }
14553
14554
14555
14556 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14557 /**
14558  * gtk_tree_view_create_row_drag_icon:
14559  * @tree_view: a #GtkTreeView
14560  * @path: a #GtkTreePath in @tree_view
14561  *
14562  * Creates a #cairo_surface_t representation of the row at @path.
14563  * This image is used for a drag icon.
14564  *
14565  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14566  **/
14567 cairo_surface_t *
14568 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14569                                     GtkTreePath  *path)
14570 {
14571   GtkTreeIter   iter;
14572   GtkRBTree    *tree;
14573   GtkRBNode    *node;
14574   GtkStyleContext *context;
14575   gint cell_offset;
14576   GList *list;
14577   GdkRectangle background_area;
14578   GtkWidget *widget;
14579   gint depth;
14580   /* start drawing inside the black outline */
14581   gint x = 1, y = 1;
14582   cairo_surface_t *surface;
14583   gint bin_window_width;
14584   gboolean is_separator = FALSE;
14585   gboolean rtl, allow_rules;
14586   cairo_t *cr;
14587
14588   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14589   g_return_val_if_fail (path != NULL, NULL);
14590
14591   widget = GTK_WIDGET (tree_view);
14592
14593   if (!gtk_widget_get_realized (widget))
14594     return NULL;
14595
14596   depth = gtk_tree_path_get_depth (path);
14597
14598   _gtk_tree_view_find_node (tree_view,
14599                             path,
14600                             &tree,
14601                             &node);
14602
14603   if (tree == NULL)
14604     return NULL;
14605
14606   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14607                                 &iter,
14608                                 path))
14609     return NULL;
14610
14611   context = gtk_widget_get_style_context (widget);
14612
14613   gtk_style_context_save (context);
14614
14615   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14616   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14617
14618   gtk_widget_style_get (widget,
14619                         "allow-rules", &allow_rules,
14620                         NULL);
14621
14622   if (allow_rules && tree_view->priv->has_rules)
14623     {
14624       GtkRegionFlags row_flags;
14625
14626       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14627         row_flags = GTK_REGION_ODD;
14628       else
14629         row_flags = GTK_REGION_EVEN;
14630
14631       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14632     }
14633
14634   is_separator = row_is_separator (tree_view, &iter, NULL);
14635
14636   cell_offset = x;
14637
14638   background_area.y = y;
14639   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14640
14641   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14642
14643   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14644                                                CAIRO_CONTENT_COLOR,
14645                                                bin_window_width + 2,
14646                                                background_area.height + 2);
14647
14648   cr = cairo_create (surface);
14649
14650   gtk_render_background (context, cr, 0, 0,
14651                          bin_window_width + 2,
14652                          background_area.height + 2);
14653
14654   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14655
14656   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14657       list;
14658       list = (rtl ? list->prev : list->next))
14659     {
14660       GtkTreeViewColumn *column = list->data;
14661       GdkRectangle cell_area;
14662       gint vertical_separator;
14663
14664       if (!gtk_tree_view_column_get_visible (column))
14665         continue;
14666
14667       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14668                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14669                                                node->children?TRUE:FALSE);
14670
14671       background_area.x = cell_offset;
14672       background_area.width = gtk_tree_view_column_get_width (column);
14673
14674       gtk_widget_style_get (widget,
14675                             "vertical-separator", &vertical_separator,
14676                             NULL);
14677
14678       cell_area = background_area;
14679
14680       cell_area.y += vertical_separator / 2;
14681       cell_area.height -= vertical_separator;
14682
14683       if (gtk_tree_view_is_expander_column (tree_view, column))
14684         {
14685           if (!rtl)
14686             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14687           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14688
14689           if (gtk_tree_view_draw_expanders (tree_view))
14690             {
14691               int expander_size = gtk_tree_view_get_expander_size (tree_view);
14692               if (!rtl)
14693                 cell_area.x += depth * expander_size;
14694               cell_area.width -= depth * expander_size;
14695             }
14696         }
14697
14698       if (gtk_tree_view_column_cell_is_visible (column))
14699         {
14700           if (is_separator)
14701             {
14702               gtk_style_context_save (context);
14703               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14704
14705               gtk_render_line (context, cr,
14706                                cell_area.x,
14707                                cell_area.y + cell_area.height / 2,
14708                                cell_area.x + cell_area.width,
14709                                cell_area.y + cell_area.height / 2);
14710
14711               gtk_style_context_restore (context);
14712             }
14713           else
14714             {
14715               _gtk_tree_view_column_cell_render (column,
14716                                                  cr,
14717                                                  &background_area,
14718                                                  &cell_area,
14719                                                  0, FALSE);
14720             }
14721         }
14722       cell_offset += gtk_tree_view_column_get_width (column);
14723     }
14724
14725   cairo_set_source_rgb (cr, 0, 0, 0);
14726   cairo_rectangle (cr,
14727                    0.5, 0.5,
14728                    bin_window_width + 1,
14729                    background_area.height + 1);
14730   cairo_set_line_width (cr, 1.0);
14731   cairo_stroke (cr);
14732
14733   cairo_destroy (cr);
14734
14735   cairo_surface_set_device_offset (surface, 2, 2);
14736
14737   gtk_style_context_restore (context);
14738
14739   return surface;
14740 }
14741
14742
14743 /**
14744  * gtk_tree_view_set_destroy_count_func:
14745  * @tree_view: A #GtkTreeView
14746  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14747  * @data: (allow-none): User data to be passed to @func, or %NULL
14748  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14749  *
14750  * This function should almost never be used.  It is meant for private use by
14751  * ATK for determining the number of visible children that are removed when the
14752  * user collapses a row, or a row is deleted.
14753  *
14754  * Deprecated: 3.4: Accessibility does not need the function anymore.
14755  **/
14756 void
14757 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14758                                       GtkTreeDestroyCountFunc  func,
14759                                       gpointer                 data,
14760                                       GDestroyNotify           destroy)
14761 {
14762   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14763
14764   if (tree_view->priv->destroy_count_destroy)
14765     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14766
14767   tree_view->priv->destroy_count_func = func;
14768   tree_view->priv->destroy_count_data = data;
14769   tree_view->priv->destroy_count_destroy = destroy;
14770 }
14771
14772
14773 /*
14774  * Interactive search
14775  */
14776
14777 /**
14778  * gtk_tree_view_set_enable_search:
14779  * @tree_view: A #GtkTreeView
14780  * @enable_search: %TRUE, if the user can search interactively
14781  *
14782  * If @enable_search is set, then the user can type in text to search through
14783  * the tree interactively (this is sometimes called "typeahead find").
14784  *
14785  * Note that even if this is %FALSE, the user can still initiate a search
14786  * using the "start-interactive-search" key binding.
14787  */
14788 void
14789 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14790                                  gboolean     enable_search)
14791 {
14792   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14793
14794   enable_search = !!enable_search;
14795
14796   if (tree_view->priv->enable_search != enable_search)
14797     {
14798        tree_view->priv->enable_search = enable_search;
14799        g_object_notify (G_OBJECT (tree_view), "enable-search");
14800     }
14801 }
14802
14803 /**
14804  * gtk_tree_view_get_enable_search:
14805  * @tree_view: A #GtkTreeView
14806  *
14807  * Returns whether or not the tree allows to start interactive searching
14808  * by typing in text.
14809  *
14810  * Return value: whether or not to let the user search interactively
14811  */
14812 gboolean
14813 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14814 {
14815   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14816
14817   return tree_view->priv->enable_search;
14818 }
14819
14820
14821 /**
14822  * gtk_tree_view_get_search_column:
14823  * @tree_view: A #GtkTreeView
14824  *
14825  * Gets the column searched on by the interactive search code.
14826  *
14827  * Return value: the column the interactive search code searches in.
14828  */
14829 gint
14830 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14831 {
14832   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14833
14834   return (tree_view->priv->search_column);
14835 }
14836
14837 /**
14838  * gtk_tree_view_set_search_column:
14839  * @tree_view: A #GtkTreeView
14840  * @column: the column of the model to search in, or -1 to disable searching
14841  *
14842  * Sets @column as the column where the interactive search code should
14843  * search in for the current model.
14844  *
14845  * If the search column is set, users can use the "start-interactive-search"
14846  * key binding to bring up search popup. The enable-search property controls
14847  * whether simply typing text will also start an interactive search.
14848  *
14849  * Note that @column refers to a column of the current model. The search
14850  * column is reset to -1 when the model is changed.
14851  */
14852 void
14853 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14854                                  gint         column)
14855 {
14856   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14857   g_return_if_fail (column >= -1);
14858
14859   if (tree_view->priv->search_column == column)
14860     return;
14861
14862   tree_view->priv->search_column = column;
14863   g_object_notify (G_OBJECT (tree_view), "search-column");
14864 }
14865
14866 /**
14867  * gtk_tree_view_get_search_equal_func: (skip)
14868  * @tree_view: A #GtkTreeView
14869  *
14870  * Returns the compare function currently in use.
14871  *
14872  * Return value: the currently used compare function for the search code.
14873  */
14874
14875 GtkTreeViewSearchEqualFunc
14876 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14877 {
14878   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14879
14880   return tree_view->priv->search_equal_func;
14881 }
14882
14883 /**
14884  * gtk_tree_view_set_search_equal_func:
14885  * @tree_view: A #GtkTreeView
14886  * @search_equal_func: the compare function to use during the search
14887  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14888  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14889  *
14890  * Sets the compare function for the interactive search capabilities; note
14891  * that somewhat like strcmp() returning 0 for equality
14892  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14893  **/
14894 void
14895 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14896                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14897                                      gpointer                    search_user_data,
14898                                      GDestroyNotify              search_destroy)
14899 {
14900   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14901   g_return_if_fail (search_equal_func != NULL);
14902
14903   if (tree_view->priv->search_destroy)
14904     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14905
14906   tree_view->priv->search_equal_func = search_equal_func;
14907   tree_view->priv->search_user_data = search_user_data;
14908   tree_view->priv->search_destroy = search_destroy;
14909   if (tree_view->priv->search_equal_func == NULL)
14910     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14911 }
14912
14913 /**
14914  * gtk_tree_view_get_search_entry:
14915  * @tree_view: A #GtkTreeView
14916  *
14917  * Returns the #GtkEntry which is currently in use as interactive search
14918  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14919  * will be returned.
14920  *
14921  * Return value: (transfer none): the entry currently in use as search entry.
14922  *
14923  * Since: 2.10
14924  */
14925 GtkEntry *
14926 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14927 {
14928   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14929
14930   if (tree_view->priv->search_custom_entry_set)
14931     return GTK_ENTRY (tree_view->priv->search_entry);
14932
14933   return NULL;
14934 }
14935
14936 /**
14937  * gtk_tree_view_set_search_entry:
14938  * @tree_view: A #GtkTreeView
14939  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14940  *
14941  * Sets the entry which the interactive search code will use for this
14942  * @tree_view.  This is useful when you want to provide a search entry
14943  * in our interface at all time at a fixed position.  Passing %NULL for
14944  * @entry will make the interactive search code use the built-in popup
14945  * entry again.
14946  *
14947  * Since: 2.10
14948  */
14949 void
14950 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14951                                 GtkEntry    *entry)
14952 {
14953   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14954   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14955
14956   if (tree_view->priv->search_custom_entry_set)
14957     {
14958       if (tree_view->priv->search_entry_changed_id)
14959         {
14960           g_signal_handler_disconnect (tree_view->priv->search_entry,
14961                                        tree_view->priv->search_entry_changed_id);
14962           tree_view->priv->search_entry_changed_id = 0;
14963         }
14964       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14965                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14966                                             tree_view);
14967
14968       g_object_unref (tree_view->priv->search_entry);
14969     }
14970   else if (tree_view->priv->search_window)
14971     {
14972       gtk_widget_destroy (tree_view->priv->search_window);
14973
14974       tree_view->priv->search_window = NULL;
14975     }
14976
14977   if (entry)
14978     {
14979       tree_view->priv->search_entry = g_object_ref (entry);
14980       tree_view->priv->search_custom_entry_set = TRUE;
14981
14982       if (tree_view->priv->search_entry_changed_id == 0)
14983         {
14984           tree_view->priv->search_entry_changed_id =
14985             g_signal_connect (tree_view->priv->search_entry, "changed",
14986                               G_CALLBACK (gtk_tree_view_search_init),
14987                               tree_view);
14988         }
14989
14990         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14991                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14992                           tree_view);
14993
14994         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14995     }
14996   else
14997     {
14998       tree_view->priv->search_entry = NULL;
14999       tree_view->priv->search_custom_entry_set = FALSE;
15000     }
15001 }
15002
15003 /**
15004  * gtk_tree_view_set_search_position_func:
15005  * @tree_view: A #GtkTreeView
15006  * @func: (allow-none): the function to use to position the search dialog, or %NULL
15007  *    to use the default search position function
15008  * @data: (allow-none): user data to pass to @func, or %NULL
15009  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
15010  *
15011  * Sets the function to use when positioning the search dialog.
15012  *
15013  * Since: 2.10
15014  **/
15015 void
15016 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
15017                                         GtkTreeViewSearchPositionFunc  func,
15018                                         gpointer                       user_data,
15019                                         GDestroyNotify                 destroy)
15020 {
15021   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15022
15023   if (tree_view->priv->search_position_destroy)
15024     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
15025
15026   tree_view->priv->search_position_func = func;
15027   tree_view->priv->search_position_user_data = user_data;
15028   tree_view->priv->search_position_destroy = destroy;
15029   if (tree_view->priv->search_position_func == NULL)
15030     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
15031 }
15032
15033 /**
15034  * gtk_tree_view_get_search_position_func: (skip)
15035  * @tree_view: A #GtkTreeView
15036  *
15037  * Returns the positioning function currently in use.
15038  *
15039  * Return value: the currently used function for positioning the search dialog.
15040  *
15041  * Since: 2.10
15042  */
15043 GtkTreeViewSearchPositionFunc
15044 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
15045 {
15046   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15047
15048   return tree_view->priv->search_position_func;
15049 }
15050
15051
15052 static void
15053 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15054                                   GtkTreeView *tree_view,
15055                                   GdkDevice   *device)
15056 {
15057   if (tree_view->priv->disable_popdown)
15058     return;
15059
15060   if (tree_view->priv->search_entry_changed_id)
15061     {
15062       g_signal_handler_disconnect (tree_view->priv->search_entry,
15063                                    tree_view->priv->search_entry_changed_id);
15064       tree_view->priv->search_entry_changed_id = 0;
15065     }
15066   if (tree_view->priv->typeselect_flush_timeout)
15067     {
15068       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15069       tree_view->priv->typeselect_flush_timeout = 0;
15070     }
15071
15072   if (gtk_widget_get_visible (search_dialog))
15073     {
15074       /* send focus-in event */
15075       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15076       gtk_widget_hide (search_dialog);
15077       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15078       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15079     }
15080 }
15081
15082 static void
15083 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15084                                     GtkWidget   *search_dialog,
15085                                     gpointer     user_data)
15086 {
15087   gint x, y;
15088   gint tree_x, tree_y;
15089   gint tree_width, tree_height;
15090   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15091   GdkScreen *screen = gdk_window_get_screen (tree_window);
15092   GtkRequisition requisition;
15093   gint monitor_num;
15094   GdkRectangle monitor;
15095
15096   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15097   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
15098
15099   gtk_widget_realize (search_dialog);
15100
15101   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15102   tree_width = gdk_window_get_width (tree_window);
15103   tree_height = gdk_window_get_height (tree_window);
15104   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15105
15106   if (tree_x + tree_width > gdk_screen_get_width (screen))
15107     x = gdk_screen_get_width (screen) - requisition.width;
15108   else if (tree_x + tree_width - requisition.width < 0)
15109     x = 0;
15110   else
15111     x = tree_x + tree_width - requisition.width;
15112
15113   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15114     y = gdk_screen_get_height (screen) - requisition.height;
15115   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15116     y = 0;
15117   else
15118     y = tree_y + tree_height;
15119
15120   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15121 }
15122
15123 static void
15124 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15125                                       GtkMenu  *menu,
15126                                       gpointer  data)
15127 {
15128   GtkTreeView *tree_view = (GtkTreeView *)data;
15129
15130   tree_view->priv->disable_popdown = 1;
15131   g_signal_connect (menu, "hide",
15132                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15133 }
15134
15135 /* Because we're visible but offscreen, we just set a flag in the preedit
15136  * callback.
15137  */
15138 static void
15139 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15140                                       GtkTreeView  *tree_view)
15141 {
15142   tree_view->priv->imcontext_changed = 1;
15143   if (tree_view->priv->typeselect_flush_timeout)
15144     {
15145       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15146       tree_view->priv->typeselect_flush_timeout =
15147         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15148                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15149                        tree_view);
15150     }
15151
15152 }
15153
15154 static void
15155 gtk_tree_view_search_activate (GtkEntry    *entry,
15156                                GtkTreeView *tree_view)
15157 {
15158   GtkTreePath *path;
15159
15160   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15161                                     tree_view,
15162                                     gtk_get_current_event_device ());
15163
15164   /* If we have a row selected and it's the cursor row, we activate
15165    * the row XXX */
15166   if (tree_view->priv->cursor_node &&
15167       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15168     {
15169       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15170                                              tree_view->priv->cursor_node);
15171
15172       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15173
15174       gtk_tree_path_free (path);
15175     }
15176 }
15177
15178 static gboolean
15179 gtk_tree_view_real_search_enable_popdown (gpointer data)
15180 {
15181   GtkTreeView *tree_view = (GtkTreeView *)data;
15182
15183   tree_view->priv->disable_popdown = 0;
15184
15185   return FALSE;
15186 }
15187
15188 static void
15189 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15190                                      gpointer   data)
15191 {
15192   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15193 }
15194
15195 static gboolean
15196 gtk_tree_view_search_delete_event (GtkWidget *widget,
15197                                    GdkEventAny *event,
15198                                    GtkTreeView *tree_view)
15199 {
15200   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15201
15202   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15203
15204   return TRUE;
15205 }
15206
15207 static gboolean
15208 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15209                                          GdkEventButton *event,
15210                                          GtkTreeView *tree_view)
15211 {
15212   GdkDevice *keyb_device;
15213
15214   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15215
15216   keyb_device = gdk_device_get_associated_device (event->device);
15217   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15218
15219   if (event->window == tree_view->priv->bin_window)
15220     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15221
15222   return TRUE;
15223 }
15224
15225 static gboolean
15226 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15227                                    GdkEventScroll *event,
15228                                    GtkTreeView *tree_view)
15229 {
15230   gboolean retval = FALSE;
15231
15232   if (event->direction == GDK_SCROLL_UP)
15233     {
15234       gtk_tree_view_search_move (widget, tree_view, TRUE);
15235       retval = TRUE;
15236     }
15237   else if (event->direction == GDK_SCROLL_DOWN)
15238     {
15239       gtk_tree_view_search_move (widget, tree_view, FALSE);
15240       retval = TRUE;
15241     }
15242
15243   /* renew the flush timeout */
15244   if (retval && tree_view->priv->typeselect_flush_timeout
15245       && !tree_view->priv->search_custom_entry_set)
15246     {
15247       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15248       tree_view->priv->typeselect_flush_timeout =
15249         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15250                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15251                        tree_view);
15252     }
15253
15254   return retval;
15255 }
15256
15257 static gboolean
15258 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15259                                       GdkEventKey *event,
15260                                       GtkTreeView *tree_view)
15261 {
15262   GdkModifierType default_accel;
15263   gboolean        retval = FALSE;
15264
15265   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15266   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15267
15268   /* close window and cancel the search */
15269   if (!tree_view->priv->search_custom_entry_set
15270       && (event->keyval == GDK_KEY_Escape ||
15271           event->keyval == GDK_KEY_Tab ||
15272             event->keyval == GDK_KEY_KP_Tab ||
15273             event->keyval == GDK_KEY_ISO_Left_Tab))
15274     {
15275       gtk_tree_view_search_dialog_hide (widget, tree_view,
15276                                         gdk_event_get_device ((GdkEvent *) event));
15277       return TRUE;
15278     }
15279
15280   default_accel = gtk_widget_get_modifier_mask (widget,
15281                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15282
15283   /* select previous matching iter */
15284   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15285     {
15286       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15287         gtk_widget_error_bell (widget);
15288
15289       retval = TRUE;
15290     }
15291
15292   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15293       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15294     {
15295       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15296         gtk_widget_error_bell (widget);
15297
15298       retval = TRUE;
15299     }
15300
15301   /* select next matching iter */
15302   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15303     {
15304       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15305         gtk_widget_error_bell (widget);
15306
15307       retval = TRUE;
15308     }
15309
15310   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15311       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15312     {
15313       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15314         gtk_widget_error_bell (widget);
15315
15316       retval = TRUE;
15317     }
15318
15319   /* renew the flush timeout */
15320   if (retval && tree_view->priv->typeselect_flush_timeout
15321       && !tree_view->priv->search_custom_entry_set)
15322     {
15323       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15324       tree_view->priv->typeselect_flush_timeout =
15325         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15326                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15327                        tree_view);
15328     }
15329
15330   return retval;
15331 }
15332
15333 /*  this function returns FALSE if there is a search string but
15334  *  nothing was found, and TRUE otherwise.
15335  */
15336 static gboolean
15337 gtk_tree_view_search_move (GtkWidget   *window,
15338                            GtkTreeView *tree_view,
15339                            gboolean     up)
15340 {
15341   gboolean ret;
15342   gint len;
15343   gint count = 0;
15344   const gchar *text;
15345   GtkTreeIter iter;
15346   GtkTreeModel *model;
15347   GtkTreeSelection *selection;
15348
15349   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15350
15351   g_return_val_if_fail (text != NULL, FALSE);
15352
15353   len = strlen (text);
15354
15355   if (up && tree_view->priv->selected_iter == 1)
15356     return strlen (text) < 1;
15357
15358   len = strlen (text);
15359
15360   if (len < 1)
15361     return TRUE;
15362
15363   model = gtk_tree_view_get_model (tree_view);
15364   selection = gtk_tree_view_get_selection (tree_view);
15365
15366   /* search */
15367   gtk_tree_selection_unselect_all (selection);
15368   if (!gtk_tree_model_get_iter_first (model, &iter))
15369     return TRUE;
15370
15371   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15372                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15373
15374   if (ret)
15375     {
15376       /* found */
15377       tree_view->priv->selected_iter += up?(-1):(1);
15378       return TRUE;
15379     }
15380   else
15381     {
15382       /* return to old iter */
15383       count = 0;
15384       gtk_tree_model_get_iter_first (model, &iter);
15385       gtk_tree_view_search_iter (model, selection,
15386                                  &iter, text,
15387                                  &count, tree_view->priv->selected_iter);
15388       return FALSE;
15389     }
15390 }
15391
15392 static gboolean
15393 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15394                                  gint          column,
15395                                  const gchar  *key,
15396                                  GtkTreeIter  *iter,
15397                                  gpointer      search_data)
15398 {
15399   gboolean retval = TRUE;
15400   const gchar *str;
15401   gchar *normalized_string;
15402   gchar *normalized_key;
15403   gchar *case_normalized_string = NULL;
15404   gchar *case_normalized_key = NULL;
15405   GValue value = G_VALUE_INIT;
15406   GValue transformed = G_VALUE_INIT;
15407
15408   gtk_tree_model_get_value (model, iter, column, &value);
15409
15410   g_value_init (&transformed, G_TYPE_STRING);
15411
15412   if (!g_value_transform (&value, &transformed))
15413     {
15414       g_value_unset (&value);
15415       return TRUE;
15416     }
15417
15418   g_value_unset (&value);
15419
15420   str = g_value_get_string (&transformed);
15421   if (!str)
15422     {
15423       g_value_unset (&transformed);
15424       return TRUE;
15425     }
15426
15427   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15428   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15429
15430   if (normalized_string && normalized_key)
15431     {
15432       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15433       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15434
15435       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15436         retval = FALSE;
15437     }
15438
15439   g_value_unset (&transformed);
15440   g_free (normalized_key);
15441   g_free (normalized_string);
15442   g_free (case_normalized_key);
15443   g_free (case_normalized_string);
15444
15445   return retval;
15446 }
15447
15448 static gboolean
15449 gtk_tree_view_search_iter (GtkTreeModel     *model,
15450                            GtkTreeSelection *selection,
15451                            GtkTreeIter      *iter,
15452                            const gchar      *text,
15453                            gint             *count,
15454                            gint              n)
15455 {
15456   GtkRBTree *tree = NULL;
15457   GtkRBNode *node = NULL;
15458   GtkTreePath *path;
15459
15460   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15461
15462   path = gtk_tree_model_get_path (model, iter);
15463   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15464
15465   do
15466     {
15467       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15468         {
15469           (*count)++;
15470           if (*count == n)
15471             {
15472               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15473                                             TRUE, 0.5, 0.0);
15474               gtk_tree_selection_select_iter (selection, iter);
15475               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15476
15477               if (path)
15478                 gtk_tree_path_free (path);
15479
15480               return TRUE;
15481             }
15482         }
15483
15484       if (node->children)
15485         {
15486           gboolean has_child;
15487           GtkTreeIter tmp;
15488
15489           tree = node->children;
15490           node = _gtk_rbtree_first (tree);
15491
15492           tmp = *iter;
15493           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15494           gtk_tree_path_down (path);
15495
15496           /* sanity check */
15497           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15498         }
15499       else
15500         {
15501           gboolean done = FALSE;
15502
15503           do
15504             {
15505               node = _gtk_rbtree_next (tree, node);
15506
15507               if (node)
15508                 {
15509                   gboolean has_next;
15510
15511                   has_next = gtk_tree_model_iter_next (model, iter);
15512
15513                   done = TRUE;
15514                   gtk_tree_path_next (path);
15515
15516                   /* sanity check */
15517                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15518                 }
15519               else
15520                 {
15521                   gboolean has_parent;
15522                   GtkTreeIter tmp_iter = *iter;
15523
15524                   node = tree->parent_node;
15525                   tree = tree->parent_tree;
15526
15527                   if (!tree)
15528                     {
15529                       if (path)
15530                         gtk_tree_path_free (path);
15531
15532                       /* we've run out of tree, done with this func */
15533                       return FALSE;
15534                     }
15535
15536                   has_parent = gtk_tree_model_iter_parent (model,
15537                                                            iter,
15538                                                            &tmp_iter);
15539                   gtk_tree_path_up (path);
15540
15541                   /* sanity check */
15542                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15543                 }
15544             }
15545           while (!done);
15546         }
15547     }
15548   while (1);
15549
15550   return FALSE;
15551 }
15552
15553 static void
15554 gtk_tree_view_search_init (GtkWidget   *entry,
15555                            GtkTreeView *tree_view)
15556 {
15557   gint ret;
15558   gint count = 0;
15559   const gchar *text;
15560   GtkTreeIter iter;
15561   GtkTreeModel *model;
15562   GtkTreeSelection *selection;
15563
15564   g_return_if_fail (GTK_IS_ENTRY (entry));
15565   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15566
15567   text = gtk_entry_get_text (GTK_ENTRY (entry));
15568
15569   model = gtk_tree_view_get_model (tree_view);
15570   selection = gtk_tree_view_get_selection (tree_view);
15571
15572   /* search */
15573   gtk_tree_selection_unselect_all (selection);
15574   if (tree_view->priv->typeselect_flush_timeout
15575       && !tree_view->priv->search_custom_entry_set)
15576     {
15577       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15578       tree_view->priv->typeselect_flush_timeout =
15579         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15580                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15581                        tree_view);
15582     }
15583
15584   if (*text == '\0')
15585     return;
15586
15587   if (!gtk_tree_model_get_iter_first (model, &iter))
15588     return;
15589
15590   ret = gtk_tree_view_search_iter (model, selection,
15591                                    &iter, text,
15592                                    &count, 1);
15593
15594   if (ret)
15595     tree_view->priv->selected_iter = 1;
15596 }
15597
15598 void
15599 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15600                                 GtkTreeViewColumn *column,
15601                                 GtkCellEditable   *cell_editable)
15602 {
15603   if (tree_view->priv->edited_column == NULL)
15604     return;
15605
15606   g_return_if_fail (column == tree_view->priv->edited_column);
15607
15608   tree_view->priv->edited_column = NULL;
15609
15610   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15611     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15612
15613   gtk_container_remove (GTK_CONTAINER (tree_view),
15614                         GTK_WIDGET (cell_editable));
15615
15616   /* FIXME should only redraw a single node */
15617   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15618 }
15619
15620 static gboolean
15621 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15622                              GtkTreePath *cursor_path,
15623                              gboolean     edit_only)
15624 {
15625   GtkTreeIter iter;
15626   GdkRectangle cell_area;
15627   GtkTreeViewColumn *focus_column;
15628   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15629   gint retval = FALSE;
15630   GtkRBTree *cursor_tree;
15631   GtkRBNode *cursor_node;
15632
15633   g_assert (tree_view->priv->focus_column);
15634   focus_column = tree_view->priv->focus_column;
15635
15636   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15637     return FALSE;
15638
15639   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15640       cursor_node == NULL)
15641     return FALSE;
15642
15643   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15644
15645   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15646
15647   gtk_tree_view_column_cell_set_cell_data (focus_column,
15648                                            tree_view->priv->model,
15649                                            &iter,
15650                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15651                                            cursor_node->children ? TRUE : FALSE);
15652   gtk_tree_view_get_cell_area (tree_view,
15653                                cursor_path,
15654                                focus_column,
15655                                &cell_area);
15656
15657   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15658                               _gtk_tree_view_column_get_context (focus_column),
15659                               GTK_WIDGET (tree_view),
15660                               &cell_area,
15661                               flags, edit_only))
15662     retval = TRUE;
15663
15664   return retval;
15665 }
15666
15667 void
15668 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15669                              GtkTreeViewColumn *column,
15670                              GtkTreePath       *path,
15671                              GtkCellEditable   *cell_editable,
15672                              GdkRectangle      *cell_area)
15673 {
15674   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15675   GtkRequisition requisition;
15676
15677   tree_view->priv->edited_column = column;
15678
15679   gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15680   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15681
15682   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15683                                  &requisition, NULL);
15684
15685   tree_view->priv->draw_keyfocus = TRUE;
15686
15687   if (requisition.height < cell_area->height)
15688     {
15689       gint diff = cell_area->height - requisition.height;
15690       gtk_tree_view_put (tree_view,
15691                          GTK_WIDGET (cell_editable),
15692                          cell_area->x, cell_area->y + diff/2,
15693                          cell_area->width, requisition.height);
15694     }
15695   else
15696     {
15697       gtk_tree_view_put (tree_view,
15698                          GTK_WIDGET (cell_editable),
15699                          cell_area->x, cell_area->y,
15700                          cell_area->width, cell_area->height);
15701     }
15702 }
15703
15704 static void
15705 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15706                             gboolean     cancel_editing)
15707 {
15708   GtkTreeViewColumn *column;
15709
15710   if (tree_view->priv->edited_column == NULL)
15711     return;
15712
15713   /*
15714    * This is very evil. We need to do this, because
15715    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15716    * later on. If gtk_tree_view_row_changed notices
15717    * tree_view->priv->edited_column != NULL, it'll call
15718    * gtk_tree_view_stop_editing again. Bad things will happen then.
15719    *
15720    * Please read that again if you intend to modify anything here.
15721    */
15722
15723   column = tree_view->priv->edited_column;
15724   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15725   tree_view->priv->edited_column = NULL;
15726 }
15727
15728
15729 /**
15730  * gtk_tree_view_set_hover_selection:
15731  * @tree_view: a #GtkTreeView
15732  * @hover: %TRUE to enable hover selection mode
15733  *
15734  * Enables or disables the hover selection mode of @tree_view.
15735  * Hover selection makes the selected row follow the pointer.
15736  * Currently, this works only for the selection modes
15737  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15738  *
15739  * Since: 2.6
15740  **/
15741 void
15742 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15743                                    gboolean     hover)
15744 {
15745   hover = hover != FALSE;
15746
15747   if (hover != tree_view->priv->hover_selection)
15748     {
15749       tree_view->priv->hover_selection = hover;
15750
15751       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15752     }
15753 }
15754
15755 /**
15756  * gtk_tree_view_get_hover_selection:
15757  * @tree_view: a #GtkTreeView
15758  *
15759  * Returns whether hover selection mode is turned on for @tree_view.
15760  *
15761  * Return value: %TRUE if @tree_view is in hover selection mode
15762  *
15763  * Since: 2.6
15764  **/
15765 gboolean
15766 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15767 {
15768   return tree_view->priv->hover_selection;
15769 }
15770
15771 /**
15772  * gtk_tree_view_set_hover_expand:
15773  * @tree_view: a #GtkTreeView
15774  * @expand: %TRUE to enable hover selection mode
15775  *
15776  * Enables or disables the hover expansion mode of @tree_view.
15777  * Hover expansion makes rows expand or collapse if the pointer
15778  * moves over them.
15779  *
15780  * Since: 2.6
15781  **/
15782 void
15783 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15784                                 gboolean     expand)
15785 {
15786   expand = expand != FALSE;
15787
15788   if (expand != tree_view->priv->hover_expand)
15789     {
15790       tree_view->priv->hover_expand = expand;
15791
15792       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15793     }
15794 }
15795
15796 /**
15797  * gtk_tree_view_get_hover_expand:
15798  * @tree_view: a #GtkTreeView
15799  *
15800  * Returns whether hover expansion mode is turned on for @tree_view.
15801  *
15802  * Return value: %TRUE if @tree_view is in hover expansion mode
15803  *
15804  * Since: 2.6
15805  **/
15806 gboolean
15807 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15808 {
15809   return tree_view->priv->hover_expand;
15810 }
15811
15812 /**
15813  * gtk_tree_view_set_rubber_banding:
15814  * @tree_view: a #GtkTreeView
15815  * @enable: %TRUE to enable rubber banding
15816  *
15817  * Enables or disables rubber banding in @tree_view.  If the selection mode
15818  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15819  * multiple rows by dragging the mouse.
15820  *
15821  * Since: 2.10
15822  **/
15823 void
15824 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15825                                   gboolean     enable)
15826 {
15827   enable = enable != FALSE;
15828
15829   if (enable != tree_view->priv->rubber_banding_enable)
15830     {
15831       tree_view->priv->rubber_banding_enable = enable;
15832
15833       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15834     }
15835 }
15836
15837 /**
15838  * gtk_tree_view_get_rubber_banding:
15839  * @tree_view: a #GtkTreeView
15840  *
15841  * Returns whether rubber banding is turned on for @tree_view.  If the
15842  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15843  * user to select multiple rows by dragging the mouse.
15844  *
15845  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15846  *
15847  * Since: 2.10
15848  **/
15849 gboolean
15850 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15851 {
15852   return tree_view->priv->rubber_banding_enable;
15853 }
15854
15855 /**
15856  * gtk_tree_view_is_rubber_banding_active:
15857  * @tree_view: a #GtkTreeView
15858  *
15859  * Returns whether a rubber banding operation is currently being done
15860  * in @tree_view.
15861  *
15862  * Return value: %TRUE if a rubber banding operation is currently being
15863  * done in @tree_view.
15864  *
15865  * Since: 2.12
15866  **/
15867 gboolean
15868 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15869 {
15870   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15871
15872   if (tree_view->priv->rubber_banding_enable
15873       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15874     return TRUE;
15875
15876   return FALSE;
15877 }
15878
15879 /**
15880  * gtk_tree_view_get_row_separator_func: (skip)
15881  * @tree_view: a #GtkTreeView
15882  *
15883  * Returns the current row separator function.
15884  *
15885  * Return value: the current row separator function.
15886  *
15887  * Since: 2.6
15888  **/
15889 GtkTreeViewRowSeparatorFunc
15890 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15891 {
15892   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15893
15894   return tree_view->priv->row_separator_func;
15895 }
15896
15897 /**
15898  * gtk_tree_view_set_row_separator_func:
15899  * @tree_view: a #GtkTreeView
15900  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15901  * @data: (allow-none): user data to pass to @func, or %NULL
15902  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15903  *
15904  * Sets the row separator function, which is used to determine
15905  * whether a row should be drawn as a separator. If the row separator
15906  * function is %NULL, no separators are drawn. This is the default value.
15907  *
15908  * Since: 2.6
15909  **/
15910 void
15911 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15912                                       GtkTreeViewRowSeparatorFunc  func,
15913                                       gpointer                     data,
15914                                       GDestroyNotify               destroy)
15915 {
15916   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15917
15918   if (tree_view->priv->row_separator_destroy)
15919     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15920
15921   tree_view->priv->row_separator_func = func;
15922   tree_view->priv->row_separator_data = data;
15923   tree_view->priv->row_separator_destroy = destroy;
15924
15925   /* Have the tree recalculate heights */
15926   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15927   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15928 }
15929
15930
15931 static void
15932 gtk_tree_view_grab_notify (GtkWidget *widget,
15933                            gboolean   was_grabbed)
15934 {
15935   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15936
15937   tree_view->priv->in_grab = !was_grabbed;
15938
15939   if (!was_grabbed)
15940     {
15941       tree_view->priv->pressed_button = -1;
15942
15943       if (tree_view->priv->rubber_band_status)
15944         gtk_tree_view_stop_rubber_band (tree_view);
15945     }
15946 }
15947
15948 static void
15949 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15950                                    GtkStateFlags  previous_state)
15951 {
15952   if (gtk_widget_get_realized (widget))
15953     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15954
15955   gtk_widget_queue_draw (widget);
15956 }
15957
15958 /**
15959  * gtk_tree_view_get_grid_lines:
15960  * @tree_view: a #GtkTreeView
15961  *
15962  * Returns which grid lines are enabled in @tree_view.
15963  *
15964  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15965  * are enabled.
15966  *
15967  * Since: 2.10
15968  */
15969 GtkTreeViewGridLines
15970 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15971 {
15972   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15973
15974   return tree_view->priv->grid_lines;
15975 }
15976
15977 /**
15978  * gtk_tree_view_set_grid_lines:
15979  * @tree_view: a #GtkTreeView
15980  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15981  * enable.
15982  *
15983  * Sets which grid lines to draw in @tree_view.
15984  *
15985  * Since: 2.10
15986  */
15987 void
15988 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15989                               GtkTreeViewGridLines   grid_lines)
15990 {
15991   GtkTreeViewPrivate *priv;
15992   GtkWidget *widget;
15993   GtkTreeViewGridLines old_grid_lines;
15994
15995   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15996
15997   priv = tree_view->priv;
15998   widget = GTK_WIDGET (tree_view);
15999
16000   old_grid_lines = priv->grid_lines;
16001   priv->grid_lines = grid_lines;
16002
16003   if (gtk_widget_get_realized (widget))
16004     {
16005       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
16006           priv->grid_line_width)
16007         {
16008           priv->grid_line_width = 0;
16009         }
16010
16011       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
16012           !priv->grid_line_width)
16013         {
16014           gint8 *dash_list;
16015
16016           gtk_widget_style_get (widget,
16017                                 "grid-line-width", &priv->grid_line_width,
16018                                 "grid-line-pattern", (gchar *)&dash_list,
16019                                 NULL);
16020
16021           if (dash_list)
16022             {
16023               priv->grid_line_dashes[0] = dash_list[0];
16024               if (dash_list[0])
16025                 priv->grid_line_dashes[1] = dash_list[1];
16026
16027               g_free (dash_list);
16028             }
16029           else
16030             {
16031               priv->grid_line_dashes[0] = 1;
16032               priv->grid_line_dashes[1] = 1;
16033             }
16034         }
16035     }
16036
16037   if (old_grid_lines != grid_lines)
16038     {
16039       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16040
16041       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
16042     }
16043 }
16044
16045 /**
16046  * gtk_tree_view_get_enable_tree_lines:
16047  * @tree_view: a #GtkTreeView.
16048  *
16049  * Returns whether or not tree lines are drawn in @tree_view.
16050  *
16051  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
16052  * otherwise.
16053  *
16054  * Since: 2.10
16055  */
16056 gboolean
16057 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16058 {
16059   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16060
16061   return tree_view->priv->tree_lines_enabled;
16062 }
16063
16064 /**
16065  * gtk_tree_view_set_enable_tree_lines:
16066  * @tree_view: a #GtkTreeView
16067  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16068  *
16069  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16070  * This does not have any visible effects for lists.
16071  *
16072  * Since: 2.10
16073  */
16074 void
16075 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16076                                      gboolean     enabled)
16077 {
16078   GtkTreeViewPrivate *priv;
16079   GtkWidget *widget;
16080   gboolean was_enabled;
16081
16082   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16083
16084   enabled = enabled != FALSE;
16085
16086   priv = tree_view->priv;
16087   widget = GTK_WIDGET (tree_view);
16088
16089   was_enabled = priv->tree_lines_enabled;
16090
16091   priv->tree_lines_enabled = enabled;
16092
16093   if (gtk_widget_get_realized (widget))
16094     {
16095       if (!enabled && priv->tree_line_width)
16096         {
16097           priv->tree_line_width = 0;
16098         }
16099
16100       if (enabled && !priv->tree_line_width)
16101         {
16102           gint8 *dash_list;
16103           gtk_widget_style_get (widget,
16104                                 "tree-line-width", &priv->tree_line_width,
16105                                 "tree-line-pattern", (gchar *)&dash_list,
16106                                 NULL);
16107
16108           if (dash_list)
16109             {
16110               priv->tree_line_dashes[0] = dash_list[0];
16111               if (dash_list[0])
16112                 priv->tree_line_dashes[1] = dash_list[1];
16113
16114               g_free (dash_list);
16115             }
16116           else
16117             {
16118               priv->tree_line_dashes[0] = 1;
16119               priv->tree_line_dashes[1] = 1;
16120             }
16121         }
16122     }
16123
16124   if (was_enabled != enabled)
16125     {
16126       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16127
16128       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16129     }
16130 }
16131
16132
16133 /**
16134  * gtk_tree_view_set_show_expanders:
16135  * @tree_view: a #GtkTreeView
16136  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16137  *
16138  * Sets whether to draw and enable expanders and indent child rows in
16139  * @tree_view.  When disabled there will be no expanders visible in trees
16140  * and there will be no way to expand and collapse rows by default.  Also
16141  * note that hiding the expanders will disable the default indentation.  You
16142  * can set a custom indentation in this case using
16143  * gtk_tree_view_set_level_indentation().
16144  * This does not have any visible effects for lists.
16145  *
16146  * Since: 2.12
16147  */
16148 void
16149 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16150                                   gboolean     enabled)
16151 {
16152   gboolean was_enabled;
16153
16154   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16155
16156   enabled = enabled != FALSE;
16157   was_enabled = tree_view->priv->show_expanders;
16158
16159   tree_view->priv->show_expanders = enabled == TRUE;
16160
16161   if (enabled != was_enabled)
16162     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16163 }
16164
16165 /**
16166  * gtk_tree_view_get_show_expanders:
16167  * @tree_view: a #GtkTreeView.
16168  *
16169  * Returns whether or not expanders are drawn in @tree_view.
16170  *
16171  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16172  * otherwise.
16173  *
16174  * Since: 2.12
16175  */
16176 gboolean
16177 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16178 {
16179   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16180
16181   return tree_view->priv->show_expanders;
16182 }
16183
16184 /**
16185  * gtk_tree_view_set_level_indentation:
16186  * @tree_view: a #GtkTreeView
16187  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16188  *
16189  * Sets the amount of extra indentation for child levels to use in @tree_view
16190  * in addition to the default indentation.  The value should be specified in
16191  * pixels, a value of 0 disables this feature and in this case only the default
16192  * indentation will be used.
16193  * This does not have any visible effects for lists.
16194  *
16195  * Since: 2.12
16196  */
16197 void
16198 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16199                                      gint         indentation)
16200 {
16201   tree_view->priv->level_indentation = indentation;
16202
16203   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16204 }
16205
16206 /**
16207  * gtk_tree_view_get_level_indentation:
16208  * @tree_view: a #GtkTreeView.
16209  *
16210  * Returns the amount, in pixels, of extra indentation for child levels
16211  * in @tree_view.
16212  *
16213  * Return value: the amount of extra indentation for child levels in
16214  * @tree_view.  A return value of 0 means that this feature is disabled.
16215  *
16216  * Since: 2.12
16217  */
16218 gint
16219 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16220 {
16221   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16222
16223   return tree_view->priv->level_indentation;
16224 }
16225
16226 /**
16227  * gtk_tree_view_set_tooltip_row:
16228  * @tree_view: a #GtkTreeView
16229  * @tooltip: a #GtkTooltip
16230  * @path: a #GtkTreePath
16231  *
16232  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16233  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16234  * See also gtk_tooltip_set_tip_area().
16235  *
16236  * Since: 2.12
16237  */
16238 void
16239 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16240                                GtkTooltip  *tooltip,
16241                                GtkTreePath *path)
16242 {
16243   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16244   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16245
16246   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16247 }
16248
16249 /**
16250  * gtk_tree_view_set_tooltip_cell:
16251  * @tree_view: a #GtkTreeView
16252  * @tooltip: a #GtkTooltip
16253  * @path: (allow-none): a #GtkTreePath or %NULL
16254  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16255  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16256  *
16257  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16258  * in common.  For example if @path is %NULL and @column is set, the tip
16259  * area will be set to the full area covered by @column.  See also
16260  * gtk_tooltip_set_tip_area().
16261  *
16262  * Note that if @path is not specified and @cell is set and part of a column
16263  * containing the expander, the tooltip might not show and hide at the correct
16264  * position.  In such cases @path must be set to the current node under the
16265  * mouse cursor for this function to operate correctly.
16266  *
16267  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16268  *
16269  * Since: 2.12
16270  */
16271 void
16272 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16273                                 GtkTooltip        *tooltip,
16274                                 GtkTreePath       *path,
16275                                 GtkTreeViewColumn *column,
16276                                 GtkCellRenderer   *cell)
16277 {
16278   GtkAllocation allocation;
16279   GdkRectangle rect;
16280
16281   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16282   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16283   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16284   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16285
16286   /* Determine x values. */
16287   if (column && cell)
16288     {
16289       GdkRectangle tmp;
16290       gint start, width;
16291
16292       /* We always pass in path here, whether it is NULL or not.
16293        * For cells in expander columns path must be specified so that
16294        * we can correctly account for the indentation.  This also means
16295        * that the tooltip is constrained vertically by the "Determine y
16296        * values" code below; this is not a real problem since cells actually
16297        * don't stretch vertically in constrast to columns.
16298        */
16299       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16300       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16301
16302       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16303                                                          tmp.x + start, 0,
16304                                                          &rect.x, NULL);
16305       rect.width = width;
16306     }
16307   else if (column)
16308     {
16309       GdkRectangle tmp;
16310
16311       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16312       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16313                                                          tmp.x, 0,
16314                                                          &rect.x, NULL);
16315       rect.width = tmp.width;
16316     }
16317   else
16318     {
16319       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16320       rect.x = 0;
16321       rect.width = allocation.width;
16322     }
16323
16324   /* Determine y values. */
16325   if (path)
16326     {
16327       GdkRectangle tmp;
16328
16329       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16330       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16331                                                          0, tmp.y,
16332                                                          NULL, &rect.y);
16333       rect.height = tmp.height;
16334     }
16335   else
16336     {
16337       rect.y = 0;
16338       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16339     }
16340
16341   gtk_tooltip_set_tip_area (tooltip, &rect);
16342 }
16343
16344 /**
16345  * gtk_tree_view_get_tooltip_context:
16346  * @tree_view: a #GtkTreeView
16347  * @x: (inout): the x coordinate (relative to widget coordinates)
16348  * @y: (inout): the y coordinate (relative to widget coordinates)
16349  * @keyboard_tip: whether this is a keyboard tooltip or not
16350  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16351  *         #GtkTreeModel or %NULL
16352  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16353  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16354  *
16355  * This function is supposed to be used in a #GtkWidget::query-tooltip
16356  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16357  * which are received in the signal handler, should be passed to this
16358  * function without modification.
16359  *
16360  * The return value indicates whether there is a tree view row at the given
16361  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16362  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16363  * @model, @path and @iter which have been provided will be set to point to
16364  * that row and the corresponding model.  @x and @y will always be converted
16365  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16366  *
16367  * Return value: whether or not the given tooltip context points to a row.
16368  *
16369  * Since: 2.12
16370  */
16371 gboolean
16372 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16373                                    gint          *x,
16374                                    gint          *y,
16375                                    gboolean       keyboard_tip,
16376                                    GtkTreeModel **model,
16377                                    GtkTreePath  **path,
16378                                    GtkTreeIter   *iter)
16379 {
16380   GtkTreePath *tmppath = NULL;
16381
16382   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16383   g_return_val_if_fail (x != NULL, FALSE);
16384   g_return_val_if_fail (y != NULL, FALSE);
16385
16386   if (keyboard_tip)
16387     {
16388       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16389
16390       if (!tmppath)
16391         return FALSE;
16392     }
16393   else
16394     {
16395       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16396                                                          x, y);
16397
16398       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16399                                           &tmppath, NULL, NULL, NULL))
16400         return FALSE;
16401     }
16402
16403   if (model)
16404     *model = gtk_tree_view_get_model (tree_view);
16405
16406   if (iter)
16407     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16408                              iter, tmppath);
16409
16410   if (path)
16411     *path = tmppath;
16412   else
16413     gtk_tree_path_free (tmppath);
16414
16415   return TRUE;
16416 }
16417
16418 static gboolean
16419 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16420                                     gint        x,
16421                                     gint        y,
16422                                     gboolean    keyboard_tip,
16423                                     GtkTooltip *tooltip,
16424                                     gpointer    data)
16425 {
16426   GValue value = G_VALUE_INIT;
16427   GValue transformed = G_VALUE_INIT;
16428   GtkTreeIter iter;
16429   GtkTreePath *path;
16430   GtkTreeModel *model;
16431   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16432
16433   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16434                                           &x, &y,
16435                                           keyboard_tip,
16436                                           &model, &path, &iter))
16437     return FALSE;
16438
16439   gtk_tree_model_get_value (model, &iter,
16440                             tree_view->priv->tooltip_column, &value);
16441
16442   g_value_init (&transformed, G_TYPE_STRING);
16443
16444   if (!g_value_transform (&value, &transformed))
16445     {
16446       g_value_unset (&value);
16447       gtk_tree_path_free (path);
16448
16449       return FALSE;
16450     }
16451
16452   g_value_unset (&value);
16453
16454   if (!g_value_get_string (&transformed))
16455     {
16456       g_value_unset (&transformed);
16457       gtk_tree_path_free (path);
16458
16459       return FALSE;
16460     }
16461
16462   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16463   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16464
16465   gtk_tree_path_free (path);
16466   g_value_unset (&transformed);
16467
16468   return TRUE;
16469 }
16470
16471 /**
16472  * gtk_tree_view_set_tooltip_column:
16473  * @tree_view: a #GtkTreeView
16474  * @column: an integer, which is a valid column number for @tree_view's model
16475  *
16476  * If you only plan to have simple (text-only) tooltips on full rows, you
16477  * can use this function to have #GtkTreeView handle these automatically
16478  * for you. @column should be set to the column in @tree_view's model
16479  * containing the tooltip texts, or -1 to disable this feature.
16480  *
16481  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16482  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16483  *
16484  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16485  * so &amp;, &lt;, etc have to be escaped in the text.
16486  *
16487  * Since: 2.12
16488  */
16489 void
16490 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16491                                   gint         column)
16492 {
16493   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16494
16495   if (column == tree_view->priv->tooltip_column)
16496     return;
16497
16498   if (column == -1)
16499     {
16500       g_signal_handlers_disconnect_by_func (tree_view,
16501                                             gtk_tree_view_set_tooltip_query_cb,
16502                                             NULL);
16503       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16504     }
16505   else
16506     {
16507       if (tree_view->priv->tooltip_column == -1)
16508         {
16509           g_signal_connect (tree_view, "query-tooltip",
16510                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16511           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16512         }
16513     }
16514
16515   tree_view->priv->tooltip_column = column;
16516   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16517 }
16518
16519 /**
16520  * gtk_tree_view_get_tooltip_column:
16521  * @tree_view: a #GtkTreeView
16522  *
16523  * Returns the column of @tree_view's model which is being used for
16524  * displaying tooltips on @tree_view's rows.
16525  *
16526  * Return value: the index of the tooltip column that is currently being
16527  * used, or -1 if this is disabled.
16528  *
16529  * Since: 2.12
16530  */
16531 gint
16532 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16533 {
16534   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16535
16536   return tree_view->priv->tooltip_column;
16537 }