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   GList *list;
2303
2304   if (priv->scroll_timeout != 0)
2305     {
2306       g_source_remove (priv->scroll_timeout);
2307       priv->scroll_timeout = 0;
2308     }
2309
2310   if (priv->auto_expand_timeout != 0)
2311     {
2312       g_source_remove (priv->auto_expand_timeout);
2313       priv->auto_expand_timeout = 0;
2314     }
2315
2316   if (priv->open_dest_timeout != 0)
2317     {
2318       g_source_remove (priv->open_dest_timeout);
2319       priv->open_dest_timeout = 0;
2320     }
2321
2322   if (priv->presize_handler_timer != 0)
2323     {
2324       g_source_remove (priv->presize_handler_timer);
2325       priv->presize_handler_timer = 0;
2326     }
2327
2328   if (priv->validate_rows_timer != 0)
2329     {
2330       g_source_remove (priv->validate_rows_timer);
2331       priv->validate_rows_timer = 0;
2332     }
2333
2334   if (priv->scroll_sync_timer != 0)
2335     {
2336       g_source_remove (priv->scroll_sync_timer);
2337       priv->scroll_sync_timer = 0;
2338     }
2339
2340   if (priv->typeselect_flush_timeout)
2341     {
2342       g_source_remove (priv->typeselect_flush_timeout);
2343       priv->typeselect_flush_timeout = 0;
2344     }
2345
2346   for (list = priv->columns; list; list = list->next)
2347     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2348
2349   gdk_window_set_user_data (priv->bin_window, NULL);
2350   gdk_window_destroy (priv->bin_window);
2351   priv->bin_window = NULL;
2352
2353   gdk_window_set_user_data (priv->header_window, NULL);
2354   gdk_window_destroy (priv->header_window);
2355   priv->header_window = NULL;
2356
2357   if (priv->drag_window)
2358     {
2359       gdk_window_set_user_data (priv->drag_window, NULL);
2360       gdk_window_destroy (priv->drag_window);
2361       priv->drag_window = NULL;
2362     }
2363
2364   if (priv->drag_highlight_window)
2365     {
2366       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2367       gdk_window_destroy (priv->drag_highlight_window);
2368       priv->drag_highlight_window = NULL;
2369     }
2370
2371   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2372 }
2373
2374 /* GtkWidget::size_request helper */
2375 static void
2376 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2377 {
2378   GList *list;
2379
2380   tree_view->priv->header_height = 0;
2381
2382   for (list = tree_view->priv->columns; list; list = list->next)
2383     {
2384       GtkRequisition     requisition;
2385       GtkTreeViewColumn *column = list->data;
2386       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2387
2388       if (button == NULL)
2389         continue;
2390
2391       gtk_widget_get_preferred_size (button, &requisition, NULL);
2392       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2393     }
2394 }
2395
2396
2397 /* Called only by ::size_request */
2398 static void
2399 gtk_tree_view_update_size (GtkTreeView *tree_view)
2400 {
2401   GList *list;
2402   GtkTreeViewColumn *column;
2403   gint i;
2404
2405   if (tree_view->priv->model == NULL)
2406     {
2407       tree_view->priv->width = 0;
2408       tree_view->priv->prev_width = 0;
2409       tree_view->priv->height = 0;
2410       return;
2411     }
2412
2413   tree_view->priv->prev_width = tree_view->priv->width;
2414   tree_view->priv->width = 0;
2415
2416   /* keep this in sync with size_allocate below */
2417   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2418     {
2419       column = list->data;
2420       if (!gtk_tree_view_column_get_visible (column))
2421         continue;
2422
2423       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2424     }
2425
2426   if (tree_view->priv->tree == NULL)
2427     tree_view->priv->height = 0;
2428   else
2429     tree_view->priv->height = tree_view->priv->tree->root->offset;
2430 }
2431
2432 static void
2433 gtk_tree_view_size_request (GtkWidget      *widget,
2434                             GtkRequisition *requisition,
2435                             gboolean        may_validate)
2436 {
2437   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2438
2439   if (may_validate)
2440     {
2441       /* we validate some rows initially just to make sure we have some size.
2442        * In practice, with a lot of static lists, this should get a good width.
2443        */
2444       do_validate_rows (tree_view, FALSE);
2445     }
2446
2447   gtk_tree_view_size_request_columns (tree_view);
2448   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2449
2450   requisition->width = tree_view->priv->width;
2451   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2452 }
2453
2454 static void
2455 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2456                                    gint      *minimum,
2457                                    gint      *natural)
2458 {
2459   GtkRequisition requisition;
2460
2461   gtk_tree_view_size_request (widget, &requisition, TRUE);
2462
2463   *minimum = *natural = requisition.width;
2464 }
2465
2466 static void
2467 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2468                                     gint      *minimum,
2469                                     gint      *natural)
2470 {
2471   GtkRequisition requisition;
2472
2473   gtk_tree_view_size_request (widget, &requisition, TRUE);
2474
2475   *minimum = *natural = requisition.height;
2476 }
2477
2478 static int
2479 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2480 {
2481   int width = 0;
2482   GList *list;
2483   gboolean rtl;
2484
2485   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2486   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2487        list->data != tree_view->priv->expander_column;
2488        list = (rtl ? list->prev : list->next))
2489     {
2490       GtkTreeViewColumn *column = list->data;
2491
2492       width += gtk_tree_view_column_get_width (column);
2493     }
2494
2495   return width;
2496 }
2497
2498 /* GtkWidget::size_allocate helper */
2499 static void
2500 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2501                                      gboolean  *width_changed)
2502 {
2503   GtkTreeView *tree_view;
2504   GList *list, *first_column, *last_column;
2505   GtkTreeViewColumn *column;
2506   GtkAllocation widget_allocation;
2507   gint width = 0;
2508   gint extra, extra_per_column, extra_for_last;
2509   gint full_requested_width = 0;
2510   gint number_of_expand_columns = 0;
2511   gboolean rtl;
2512   gboolean update_expand;
2513
2514   tree_view = GTK_TREE_VIEW (widget);
2515
2516   for (last_column = g_list_last (tree_view->priv->columns);
2517        last_column &&
2518        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2519        last_column = last_column->prev)
2520     ;
2521   if (last_column == NULL)
2522     return;
2523
2524   for (first_column = g_list_first (tree_view->priv->columns);
2525        first_column &&
2526        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2527        first_column = first_column->next)
2528     ;
2529
2530   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2531
2532   /* find out how many extra space and expandable columns we have */
2533   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2534     {
2535       column = (GtkTreeViewColumn *)list->data;
2536
2537       if (!gtk_tree_view_column_get_visible (column))
2538         continue;
2539
2540       full_requested_width += _gtk_tree_view_column_request_width (column);
2541
2542       if (gtk_tree_view_column_get_expand (column))
2543         number_of_expand_columns++;
2544     }
2545
2546   /* Only update the expand value if the width of the widget has changed,
2547    * or the number of expand columns has changed, or if there are no expand
2548    * columns, or if we didn't have an size-allocation yet after the
2549    * last validated node.
2550    */
2551   update_expand = (width_changed && *width_changed == TRUE)
2552       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2553       || number_of_expand_columns == 0
2554       || tree_view->priv->post_validation_flag == TRUE;
2555
2556   tree_view->priv->post_validation_flag = FALSE;
2557
2558   gtk_widget_get_allocation (widget, &widget_allocation);
2559   if (!update_expand)
2560     {
2561       extra = tree_view->priv->last_extra_space;
2562       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2563     }
2564   else
2565     {
2566       extra = MAX (widget_allocation.width - full_requested_width, 0);
2567       extra_for_last = 0;
2568
2569       tree_view->priv->last_extra_space = extra;
2570     }
2571
2572   if (number_of_expand_columns > 0)
2573     extra_per_column = extra/number_of_expand_columns;
2574   else
2575     extra_per_column = 0;
2576
2577   if (update_expand)
2578     {
2579       tree_view->priv->last_extra_space_per_column = extra_per_column;
2580       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2581     }
2582
2583   for (list = (rtl ? last_column : first_column);
2584        list != (rtl ? first_column->prev : last_column->next);
2585        list = (rtl ? list->prev : list->next))
2586     {
2587       gint column_width;
2588
2589       column = list->data;
2590
2591       if (!gtk_tree_view_column_get_visible (column))
2592         continue;
2593
2594       /* We need to handle the dragged button specially.
2595        */
2596       if (column == tree_view->priv->drag_column)
2597         {
2598           GtkAllocation drag_allocation;
2599           GtkWidget    *button;
2600
2601           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2602
2603           drag_allocation.x = 0;
2604           drag_allocation.y = 0;
2605           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2606           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2607           gtk_widget_size_allocate (button, &drag_allocation);
2608           width += drag_allocation.width;
2609           continue;
2610         }
2611
2612       column_width = _gtk_tree_view_column_request_width (column);
2613
2614       if (gtk_tree_view_column_get_expand (column))
2615         {
2616           if (number_of_expand_columns == 1)
2617             {
2618               /* We add the remander to the last column as
2619                * */
2620               column_width += extra;
2621             }
2622           else
2623             {
2624               column_width += extra_per_column;
2625               extra -= extra_per_column;
2626               number_of_expand_columns --;
2627             }
2628         }
2629       else if (number_of_expand_columns == 0 &&
2630                list == last_column)
2631         {
2632           column_width += extra;
2633         }
2634
2635       /* In addition to expand, the last column can get even more
2636        * extra space so all available space is filled up.
2637        */
2638       if (extra_for_last > 0 && list == last_column)
2639         column_width += extra_for_last;
2640
2641       _gtk_tree_view_column_allocate (column, width, column_width);
2642
2643       width += column_width;
2644     }
2645
2646   /* We change the width here.  The user might have been resizing columns,
2647    * which changes the total width of the tree view.  This is of
2648    * importance for getting the horizontal scroll bar right.
2649    */
2650   if (tree_view->priv->width != width)
2651     {
2652       tree_view->priv->width = width;
2653       if (width_changed)
2654         *width_changed = TRUE;
2655     }
2656 }
2657
2658
2659 static void
2660 gtk_tree_view_size_allocate (GtkWidget     *widget,
2661                              GtkAllocation *allocation)
2662 {
2663   GtkAllocation widget_allocation;
2664   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2665   GList *tmp_list;
2666   gboolean width_changed = FALSE;
2667   gint old_width;
2668
2669   gtk_widget_get_allocation (widget, &widget_allocation);
2670   old_width = widget_allocation.width;
2671   if (allocation->width != widget_allocation.width)
2672     width_changed = TRUE;
2673
2674   gtk_widget_set_allocation (widget, allocation);
2675
2676   tmp_list = tree_view->priv->children;
2677
2678   while (tmp_list)
2679     {
2680       GtkAllocation allocation;
2681
2682       GtkTreeViewChild *child = tmp_list->data;
2683       tmp_list = tmp_list->next;
2684
2685       /* totally ignore our child's requisition */
2686       allocation.x = child->x;
2687       allocation.y = child->y;
2688       allocation.width = child->width;
2689       allocation.height = child->height;
2690       gtk_widget_size_allocate (child->widget, &allocation);
2691     }
2692
2693   /* We size-allocate the columns first because the width of the
2694    * tree view (used in updating the adjustments below) might change.
2695    */
2696   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2697
2698   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2699   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2700                                 allocation->width);
2701   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2702                                      allocation->width * 0.9);
2703   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2704                                      allocation->width * 0.1);
2705   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2706   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2707                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2708                                  tree_view->priv->width));
2709   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2710
2711   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2712     {
2713       if (allocation->width < tree_view->priv->width)
2714         {
2715           if (tree_view->priv->init_hadjust_value)
2716             {
2717               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2718                                         MAX (tree_view->priv->width -
2719                                              allocation->width, 0));
2720               tree_view->priv->init_hadjust_value = FALSE;
2721             }
2722           else if (allocation->width != old_width)
2723             {
2724               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2725                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2726                                                0,
2727                                                tree_view->priv->width - allocation->width));
2728             }
2729           else
2730             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2731                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2732                                              0,
2733                                              tree_view->priv->width - allocation->width));
2734         }
2735       else
2736         {
2737           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2738           tree_view->priv->init_hadjust_value = TRUE;
2739         }
2740     }
2741   else
2742     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2743       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2744                                 MAX (tree_view->priv->width -
2745                                      allocation->width, 0));
2746
2747   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2748   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2749                                 allocation->height -
2750                                 gtk_tree_view_get_effective_header_height (tree_view));
2751   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2752                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2753   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2754                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2755   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2756   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2757                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2758                                  tree_view->priv->height));
2759   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2760
2761   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2762   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2763     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2764   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2765     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2766                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2767   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2768     gtk_tree_view_top_row_to_dy (tree_view);
2769   else
2770     gtk_tree_view_dy_to_top_row (tree_view);
2771
2772   if (gtk_widget_get_realized (widget))
2773     {
2774       gdk_window_move_resize (gtk_widget_get_window (widget),
2775                               allocation->x, allocation->y,
2776                               allocation->width, allocation->height);
2777       gdk_window_move_resize (tree_view->priv->header_window,
2778                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2779                               0,
2780                               MAX (tree_view->priv->width, allocation->width),
2781                               tree_view->priv->header_height);
2782       gdk_window_move_resize (tree_view->priv->bin_window,
2783                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2784                               gtk_tree_view_get_effective_header_height (tree_view),
2785                               MAX (tree_view->priv->width, allocation->width),
2786                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2787
2788       if (tree_view->priv->tree == NULL)
2789         invalidate_empty_focus (tree_view);
2790
2791       if (width_changed && tree_view->priv->expander_column)
2792         {
2793           /* Might seem awkward, but is the best heuristic I could come up
2794            * with.  Only if the width of the columns before the expander
2795            * changes, we will update the prelight status.  It is this
2796            * width that makes the expander move vertically.  Always updating
2797            * prelight status causes trouble with hover selections.
2798            */
2799           gint width_before_expander;
2800
2801           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2802
2803           if (tree_view->priv->prev_width_before_expander
2804               != width_before_expander)
2805               update_prelight (tree_view,
2806                                tree_view->priv->event_last_x,
2807                                tree_view->priv->event_last_y);
2808
2809           tree_view->priv->prev_width_before_expander = width_before_expander;
2810         }
2811     }
2812 }
2813
2814 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2815 static void
2816 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2817 {
2818   GtkWidget *widget = GTK_WIDGET (tree_view);
2819
2820   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2821     gtk_widget_grab_focus (widget);
2822   tree_view->priv->draw_keyfocus = 0;
2823 }
2824
2825 static inline gboolean
2826 row_is_separator (GtkTreeView *tree_view,
2827                   GtkTreeIter *iter,
2828                   GtkTreePath *path)
2829 {
2830   gboolean is_separator = FALSE;
2831
2832   if (tree_view->priv->row_separator_func)
2833     {
2834       GtkTreeIter tmpiter;
2835
2836       if (iter)
2837         tmpiter = *iter;
2838       else
2839         {
2840           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2841             return FALSE;
2842         }
2843
2844       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2845                                                           &tmpiter,
2846                                                           tree_view->priv->row_separator_data);
2847     }
2848
2849   return is_separator;
2850 }
2851
2852 static int
2853 gtk_tree_view_get_expander_size (GtkTreeView *tree_view)
2854 {
2855   gint expander_size;
2856
2857   gtk_widget_style_get (GTK_WIDGET (tree_view),
2858                         "expander-size", &expander_size,
2859                         NULL);
2860   expander_size += EXPANDER_EXTRA_PADDING;
2861
2862   return expander_size;
2863 }
2864
2865 static gboolean
2866 gtk_tree_view_button_press (GtkWidget      *widget,
2867                             GdkEventButton *event)
2868 {
2869   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2870   GList *list;
2871   GtkTreeViewColumn *column = NULL;
2872   gint i;
2873   GdkRectangle background_area;
2874   GdkRectangle cell_area;
2875   gint vertical_separator;
2876   gint horizontal_separator;
2877   gboolean path_is_selectable;
2878   gboolean rtl;
2879
2880   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2881   gtk_tree_view_stop_editing (tree_view, FALSE);
2882   gtk_widget_style_get (widget,
2883                         "vertical-separator", &vertical_separator,
2884                         "horizontal-separator", &horizontal_separator,
2885                         NULL);
2886
2887   /* Don't handle extra mouse buttons events, let them bubble up */
2888   if (event->button > 5)
2889     return FALSE;
2890
2891   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2892    * we're done handling the button press.
2893    */
2894
2895   if (event->window == tree_view->priv->bin_window)
2896     {
2897       GtkRBNode *node;
2898       GtkRBTree *tree;
2899       GtkTreePath *path;
2900       gint depth;
2901       gint new_y;
2902       gint y_offset;
2903       gint dval;
2904       gint pre_val, aft_val;
2905       GtkTreeViewColumn *column = NULL;
2906       gint column_handled_click = FALSE;
2907       gboolean row_double_click = FALSE;
2908       gboolean rtl;
2909       gboolean node_selected;
2910       GdkModifierType extend_mod_mask;
2911       GdkModifierType modify_mod_mask;
2912
2913       /* Empty tree? */
2914       if (tree_view->priv->tree == NULL)
2915         {
2916           grab_focus_and_unset_draw_keyfocus (tree_view);
2917           return TRUE;
2918         }
2919
2920       /* are we in an arrow? */
2921       if (tree_view->priv->prelight_node &&
2922           tree_view->priv->arrow_prelit &&
2923           gtk_tree_view_draw_expanders (tree_view))
2924         {
2925           if (event->button == GDK_BUTTON_PRIMARY)
2926             {
2927               gtk_grab_add (widget);
2928               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2929               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2930               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2931                                               tree_view->priv->prelight_tree,
2932                                               tree_view->priv->prelight_node);
2933             }
2934
2935           grab_focus_and_unset_draw_keyfocus (tree_view);
2936           return TRUE;
2937         }
2938
2939       /* find the node that was clicked */
2940       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2941       if (new_y < 0)
2942         new_y = 0;
2943       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2944
2945       if (node == NULL)
2946         {
2947           /* We clicked in dead space */
2948           grab_focus_and_unset_draw_keyfocus (tree_view);
2949           return TRUE;
2950         }
2951
2952       /* Get the path and the node */
2953       path = _gtk_tree_path_new_from_rbtree (tree, node);
2954       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2955
2956       if (!path_is_selectable)
2957         {
2958           gtk_tree_path_free (path);
2959           grab_focus_and_unset_draw_keyfocus (tree_view);
2960           return TRUE;
2961         }
2962
2963       depth = gtk_tree_path_get_depth (path);
2964       background_area.y = y_offset + event->y;
2965       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2966       background_area.x = 0;
2967
2968
2969       /* Let the column have a chance at selecting it. */
2970       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2971       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2972            list; list = (rtl ? list->prev : list->next))
2973         {
2974           GtkTreeViewColumn *candidate = list->data;
2975
2976           if (!gtk_tree_view_column_get_visible (candidate))
2977             continue;
2978
2979           background_area.width = gtk_tree_view_column_get_width (candidate);
2980           if ((background_area.x > (gint) event->x) ||
2981               (background_area.x + background_area.width <= (gint) event->x))
2982             {
2983               background_area.x += background_area.width;
2984               continue;
2985             }
2986
2987           /* we found the focus column */
2988           column = candidate;
2989           cell_area = background_area;
2990           cell_area.width -= horizontal_separator;
2991           cell_area.height -= vertical_separator;
2992           cell_area.x += horizontal_separator/2;
2993           cell_area.y += vertical_separator/2;
2994           if (gtk_tree_view_is_expander_column (tree_view, column))
2995             {
2996               if (!rtl)
2997                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2998               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2999
3000               if (gtk_tree_view_draw_expanders (tree_view))
3001                 {
3002                   gint expander_size = gtk_tree_view_get_expander_size (tree_view);
3003                   if (!rtl)
3004                     cell_area.x += depth * expander_size;
3005                   cell_area.width -= depth * expander_size;
3006                 }
3007             }
3008           break;
3009         }
3010
3011       if (column == NULL)
3012         {
3013           gtk_tree_path_free (path);
3014           grab_focus_and_unset_draw_keyfocus (tree_view);
3015           return FALSE;
3016         }
3017
3018       _gtk_tree_view_set_focus_column (tree_view, column);
3019
3020       /* decide if we edit */
3021       if (event->type == GDK_BUTTON_PRESS && event->button == GDK_BUTTON_PRIMARY &&
3022           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3023         {
3024           GtkTreePath *anchor;
3025           GtkTreeIter iter;
3026
3027           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3028           gtk_tree_view_column_cell_set_cell_data (column,
3029                                                    tree_view->priv->model,
3030                                                    &iter,
3031                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3032                                                    node->children?TRUE:FALSE);
3033
3034           if (tree_view->priv->anchor)
3035             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3036           else
3037             anchor = NULL;
3038
3039           if ((anchor && !gtk_tree_path_compare (anchor, path))
3040               || !_gtk_tree_view_column_has_editable_cell (column))
3041             {
3042               GtkCellEditable *cell_editable = NULL;
3043
3044               /* FIXME: get the right flags */
3045               guint flags = 0;
3046
3047               if (_gtk_tree_view_column_cell_event (column,
3048                                                     (GdkEvent *)event,
3049                                                     &cell_area, flags))
3050                 {
3051                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3052                   cell_editable = gtk_cell_area_get_edit_widget (area);
3053
3054                   if (cell_editable != NULL)
3055                     {
3056                       gtk_tree_path_free (path);
3057                       gtk_tree_path_free (anchor);
3058                       return TRUE;
3059                     }
3060                   column_handled_click = TRUE;
3061                 }
3062             }
3063           if (anchor)
3064             gtk_tree_path_free (anchor);
3065         }
3066
3067       extend_mod_mask =
3068         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3069
3070       modify_mod_mask =
3071         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3072
3073       /* select */
3074       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3075       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3076
3077       /* we only handle selection modifications on the first button press
3078        */
3079       if (event->type == GDK_BUTTON_PRESS)
3080         {
3081           GtkCellRenderer *focus_cell;
3082
3083           if ((event->state & modify_mod_mask) == modify_mod_mask)
3084             tree_view->priv->modify_selection_pressed = TRUE;
3085           if ((event->state & extend_mod_mask) == extend_mod_mask)
3086             tree_view->priv->extend_selection_pressed = TRUE;
3087
3088           /* We update the focus cell here, this is also needed if the
3089            * column does not contain an editable cell.  In this case,
3090            * GtkCellArea did not receive the event for processing (and
3091            * could not update the focus cell).
3092            */
3093           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3094                                                               &cell_area,
3095                                                               &background_area,
3096                                                               event->x,
3097                                                               event->y);
3098
3099           if (focus_cell)
3100             gtk_tree_view_column_focus_cell (column, focus_cell);
3101
3102           if (event->state & modify_mod_mask)
3103             {
3104               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3105               gtk_tree_view_real_toggle_cursor_row (tree_view);
3106             }
3107           else if (event->state & extend_mod_mask)
3108             {
3109               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3110               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3111             }
3112           else
3113             {
3114               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3115             }
3116
3117           tree_view->priv->modify_selection_pressed = FALSE;
3118           tree_view->priv->extend_selection_pressed = FALSE;
3119         }
3120
3121       /* the treeview may have been scrolled because of _set_cursor,
3122        * correct here
3123        */
3124
3125       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3126       dval = pre_val - aft_val;
3127
3128       cell_area.y += dval;
3129       background_area.y += dval;
3130
3131       /* Save press to possibly begin a drag
3132        */
3133       if (!column_handled_click &&
3134           !tree_view->priv->in_grab &&
3135           tree_view->priv->pressed_button < 0)
3136         {
3137           tree_view->priv->pressed_button = event->button;
3138           tree_view->priv->press_start_x = event->x;
3139           tree_view->priv->press_start_y = event->y;
3140
3141           if (tree_view->priv->rubber_banding_enable
3142               && !node_selected
3143               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3144             {
3145               tree_view->priv->press_start_y += tree_view->priv->dy;
3146               tree_view->priv->rubber_band_x = event->x;
3147               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3148               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3149
3150               if ((event->state & modify_mod_mask) == modify_mod_mask)
3151                 tree_view->priv->rubber_band_modify = TRUE;
3152               if ((event->state & extend_mod_mask) == extend_mod_mask)
3153                 tree_view->priv->rubber_band_extend = TRUE;
3154             }
3155         }
3156
3157       /* Test if a double click happened on the same row. */
3158       if (event->button == GDK_BUTTON_PRIMARY && event->type == GDK_BUTTON_PRESS)
3159         {
3160           int double_click_time, double_click_distance;
3161
3162           g_object_get (gtk_settings_get_default (),
3163                         "gtk-double-click-time", &double_click_time,
3164                         "gtk-double-click-distance", &double_click_distance,
3165                         NULL);
3166
3167           /* Same conditions as _gdk_event_button_generate */
3168           if (tree_view->priv->last_button_x != -1 &&
3169               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3170               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3171               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3172             {
3173               /* We do no longer compare paths of this row and the
3174                * row clicked previously.  We use the double click
3175                * distance to decide whether this is a valid click,
3176                * allowing the mouse to slightly move over another row.
3177                */
3178               row_double_click = TRUE;
3179
3180               tree_view->priv->last_button_time = 0;
3181               tree_view->priv->last_button_x = -1;
3182               tree_view->priv->last_button_y = -1;
3183             }
3184           else
3185             {
3186               tree_view->priv->last_button_time = event->time;
3187               tree_view->priv->last_button_x = event->x;
3188               tree_view->priv->last_button_y = event->y;
3189             }
3190         }
3191
3192       if (row_double_click)
3193         {
3194           gtk_grab_remove (widget);
3195           gtk_tree_view_row_activated (tree_view, path, column);
3196
3197           if (tree_view->priv->pressed_button == event->button)
3198             tree_view->priv->pressed_button = -1;
3199         }
3200
3201       gtk_tree_path_free (path);
3202
3203       /* If we activated the row through a double click we don't want to grab
3204        * focus back, as moving focus to another widget is pretty common.
3205        */
3206       if (!row_double_click)
3207         grab_focus_and_unset_draw_keyfocus (tree_view);
3208
3209       return TRUE;
3210     }
3211
3212   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3213    */
3214   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3215     {
3216       column = list->data;
3217       if (event->window == _gtk_tree_view_column_get_window (column) &&
3218           gtk_tree_view_column_get_resizable (column) &&
3219           _gtk_tree_view_column_get_window (column))
3220         {
3221           gpointer drag_data;
3222
3223           if (event->type == GDK_2BUTTON_PRESS &&
3224               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3225             {
3226               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3227               _gtk_tree_view_column_autosize (tree_view, column);
3228               return TRUE;
3229             }
3230
3231           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3232                                _gtk_tree_view_column_get_window (column),
3233                                GDK_OWNERSHIP_NONE,
3234                                FALSE,
3235                                GDK_POINTER_MOTION_HINT_MASK
3236                                 | GDK_BUTTON1_MOTION_MASK
3237                                 | GDK_BUTTON_RELEASE_MASK,
3238                                NULL,
3239                                event->time) != GDK_GRAB_SUCCESS)
3240             return FALSE;
3241
3242           gtk_grab_add (widget);
3243           tree_view->priv->in_column_resize = TRUE;
3244
3245           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3246                                                    tree_view->priv->last_extra_space_per_column);
3247
3248           /* block attached dnd signal handler */
3249           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3250           if (drag_data)
3251             g_signal_handlers_block_matched (widget,
3252                                              G_SIGNAL_MATCH_DATA,
3253                                              0, 0, NULL, NULL,
3254                                              drag_data);
3255
3256           tree_view->priv->drag_pos = i;
3257           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3258
3259           if (!gtk_widget_has_focus (widget))
3260             gtk_widget_grab_focus (widget);
3261
3262           return TRUE;
3263         }
3264     }
3265   return FALSE;
3266 }
3267
3268 /* GtkWidget::button_release_event helper */
3269 static gboolean
3270 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3271                                           GdkEventButton *event)
3272 {
3273   GtkTreeView *tree_view;
3274   GtkWidget *button;
3275   GList *l;
3276   gboolean rtl;
3277   GdkDevice *device, *other;
3278   GtkStyleContext *context;
3279
3280   tree_view = GTK_TREE_VIEW (widget);
3281
3282   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3283   device = gdk_event_get_device ((GdkEvent*)event);
3284   other = gdk_device_get_associated_device (device);
3285   gdk_device_ungrab (device, event->time);
3286   gdk_device_ungrab (other, event->time);
3287
3288   /* Move the button back */
3289   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3290
3291   context = gtk_widget_get_style_context (button);
3292   gtk_style_context_remove_class (context, STYLE_CLASS_DND);
3293
3294   g_object_ref (button);
3295   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3296   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3297   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3298   g_object_unref (button);
3299   gtk_widget_queue_resize (widget);
3300   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3301     {
3302       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3303       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3304     }
3305   else
3306     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3307
3308   gtk_widget_grab_focus (button);
3309
3310   if (rtl)
3311     {
3312       if (tree_view->priv->cur_reorder &&
3313           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3314         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3315                                          tree_view->priv->cur_reorder->right_column);
3316     }
3317   else
3318     {
3319       if (tree_view->priv->cur_reorder &&
3320           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3321         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3322                                          tree_view->priv->cur_reorder->left_column);
3323     }
3324   tree_view->priv->drag_column = NULL;
3325   gdk_window_destroy (tree_view->priv->drag_window);
3326   tree_view->priv->drag_window = NULL;
3327
3328   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3329     g_slice_free (GtkTreeViewColumnReorder, l->data);
3330   g_list_free (tree_view->priv->column_drag_info);
3331   tree_view->priv->column_drag_info = NULL;
3332   tree_view->priv->cur_reorder = NULL;
3333
3334   if (tree_view->priv->drag_highlight_window)
3335     gdk_window_hide (tree_view->priv->drag_highlight_window);
3336
3337   /* Reset our flags */
3338   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3339   tree_view->priv->in_column_drag = FALSE;
3340
3341   return TRUE;
3342 }
3343
3344 /* GtkWidget::button_release_event helper */
3345 static gboolean
3346 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3347                                             GdkEventButton *event)
3348 {
3349   GtkTreeView *tree_view;
3350   gpointer drag_data;
3351
3352   tree_view = GTK_TREE_VIEW (widget);
3353
3354   tree_view->priv->drag_pos = -1;
3355
3356   /* unblock attached dnd signal handler */
3357   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3358   if (drag_data)
3359     g_signal_handlers_unblock_matched (widget,
3360                                        G_SIGNAL_MATCH_DATA,
3361                                        0, 0, NULL, NULL,
3362                                        drag_data);
3363
3364   tree_view->priv->in_column_resize = FALSE;
3365   gtk_grab_remove (widget);
3366   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3367   return TRUE;
3368 }
3369
3370 static gboolean
3371 gtk_tree_view_button_release (GtkWidget      *widget,
3372                               GdkEventButton *event)
3373 {
3374   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3375
3376   if (tree_view->priv->in_column_drag)
3377     return gtk_tree_view_button_release_drag_column (widget, event);
3378
3379   if (tree_view->priv->rubber_band_status)
3380     gtk_tree_view_stop_rubber_band (tree_view);
3381
3382   if (tree_view->priv->pressed_button == event->button)
3383     tree_view->priv->pressed_button = -1;
3384
3385   if (tree_view->priv->in_column_resize)
3386     return gtk_tree_view_button_release_column_resize (widget, event);
3387
3388   if (tree_view->priv->button_pressed_node == NULL)
3389     return FALSE;
3390
3391   if (event->button == GDK_BUTTON_PRIMARY)
3392     {
3393       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3394           tree_view->priv->arrow_prelit)
3395         {
3396           GtkTreePath *path = NULL;
3397
3398           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3399                                                  tree_view->priv->button_pressed_node);
3400           /* Actually activate the node */
3401           if (tree_view->priv->button_pressed_node->children == NULL)
3402             gtk_tree_view_real_expand_row (tree_view, path,
3403                                            tree_view->priv->button_pressed_tree,
3404                                            tree_view->priv->button_pressed_node,
3405                                            FALSE, TRUE);
3406           else
3407             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3408                                              tree_view->priv->button_pressed_tree,
3409                                              tree_view->priv->button_pressed_node, TRUE);
3410           gtk_tree_path_free (path);
3411         }
3412
3413       gtk_grab_remove (widget);
3414       tree_view->priv->button_pressed_tree = NULL;
3415       tree_view->priv->button_pressed_node = NULL;
3416     }
3417
3418   return TRUE;
3419 }
3420
3421 static gboolean
3422 gtk_tree_view_grab_broken (GtkWidget          *widget,
3423                            GdkEventGrabBroken *event)
3424 {
3425   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3426
3427   if (tree_view->priv->in_column_drag)
3428     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3429
3430   if (tree_view->priv->in_column_resize)
3431     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3432
3433   return TRUE;
3434 }
3435
3436 #if 0
3437 static gboolean
3438 gtk_tree_view_configure (GtkWidget *widget,
3439                          GdkEventConfigure *event)
3440 {
3441   GtkTreeView *tree_view;
3442
3443   tree_view = GTK_TREE_VIEW (widget);
3444   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3445
3446   return FALSE;
3447 }
3448 #endif
3449
3450 /* GtkWidget::motion_event function set.
3451  */
3452
3453 static gboolean
3454 coords_are_over_arrow (GtkTreeView *tree_view,
3455                        GtkRBTree   *tree,
3456                        GtkRBNode   *node,
3457                        /* these are in bin window coords */
3458                        gint         x,
3459                        gint         y)
3460 {
3461   GdkRectangle arrow;
3462   gint x2;
3463
3464   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3465     return FALSE;
3466
3467   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3468     return FALSE;
3469
3470   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3471   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3472
3473   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3474
3475   arrow.width = x2 - arrow.x;
3476
3477   return (x >= arrow.x &&
3478           x < (arrow.x + arrow.width) &&
3479           y >= arrow.y &&
3480           y < (arrow.y + arrow.height));
3481 }
3482
3483 static gboolean
3484 auto_expand_timeout (gpointer data)
3485 {
3486   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3487   GtkTreePath *path;
3488
3489   if (tree_view->priv->prelight_node)
3490     {
3491       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3492                                              tree_view->priv->prelight_node);
3493
3494       if (tree_view->priv->prelight_node->children)
3495         gtk_tree_view_collapse_row (tree_view, path);
3496       else
3497         gtk_tree_view_expand_row (tree_view, path, FALSE);
3498
3499       gtk_tree_path_free (path);
3500     }
3501
3502   tree_view->priv->auto_expand_timeout = 0;
3503
3504   return FALSE;
3505 }
3506
3507 static void
3508 remove_auto_expand_timeout (GtkTreeView *tree_view)
3509 {
3510   if (tree_view->priv->auto_expand_timeout != 0)
3511     {
3512       g_source_remove (tree_view->priv->auto_expand_timeout);
3513       tree_view->priv->auto_expand_timeout = 0;
3514     }
3515 }
3516
3517 static void
3518 do_prelight (GtkTreeView *tree_view,
3519              GtkRBTree   *tree,
3520              GtkRBNode   *node,
3521              /* these are in bin_window coords */
3522              gint         x,
3523              gint         y)
3524 {
3525   if (tree_view->priv->prelight_tree == tree &&
3526       tree_view->priv->prelight_node == node)
3527     {
3528       /*  We are still on the same node,
3529           but we might need to take care of the arrow  */
3530
3531       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3532         {
3533           gboolean over_arrow;
3534
3535           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3536
3537           if (over_arrow != tree_view->priv->arrow_prelit)
3538             {
3539               if (over_arrow)
3540                 tree_view->priv->arrow_prelit = TRUE;
3541               else
3542                 tree_view->priv->arrow_prelit = FALSE;
3543
3544               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3545             }
3546         }
3547
3548       return;
3549     }
3550
3551   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3552     {
3553       /*  Unprelight the old node and arrow  */
3554
3555       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3556                              GTK_RBNODE_IS_PRELIT);
3557
3558       if (tree_view->priv->arrow_prelit
3559           && gtk_tree_view_draw_expanders (tree_view))
3560         {
3561           tree_view->priv->arrow_prelit = FALSE;
3562
3563           gtk_tree_view_queue_draw_arrow (tree_view,
3564                                           tree_view->priv->prelight_tree,
3565                                           tree_view->priv->prelight_node);
3566         }
3567
3568       _gtk_tree_view_queue_draw_node (tree_view,
3569                                       tree_view->priv->prelight_tree,
3570                                       tree_view->priv->prelight_node,
3571                                       NULL);
3572     }
3573
3574
3575   if (tree_view->priv->hover_expand)
3576     remove_auto_expand_timeout (tree_view);
3577
3578   /*  Set the new prelight values  */
3579   tree_view->priv->prelight_node = node;
3580   tree_view->priv->prelight_tree = tree;
3581
3582   if (!node || !tree)
3583     return;
3584
3585   /*  Prelight the new node and arrow  */
3586
3587   if (gtk_tree_view_draw_expanders (tree_view)
3588       && coords_are_over_arrow (tree_view, tree, node, x, y))
3589     {
3590       tree_view->priv->arrow_prelit = TRUE;
3591
3592       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3593     }
3594
3595   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3596
3597   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3598
3599   if (tree_view->priv->hover_expand)
3600     {
3601       tree_view->priv->auto_expand_timeout =
3602         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3603     }
3604 }
3605
3606 static void
3607 prelight_or_select (GtkTreeView *tree_view,
3608                     GtkRBTree   *tree,
3609                     GtkRBNode   *node,
3610                     /* these are in bin_window coords */
3611                     gint         x,
3612                     gint         y)
3613 {
3614   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3615
3616   if (tree_view->priv->hover_selection &&
3617       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3618       !(tree_view->priv->edited_column &&
3619         gtk_cell_area_get_edit_widget
3620         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3621     {
3622       if (node)
3623         {
3624           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3625             {
3626               GtkTreePath *path;
3627
3628               path = _gtk_tree_path_new_from_rbtree (tree, node);
3629               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3630               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3631                 {
3632                   tree_view->priv->draw_keyfocus = FALSE;
3633                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3634                 }
3635               gtk_tree_path_free (path);
3636             }
3637         }
3638
3639       else if (mode == GTK_SELECTION_SINGLE)
3640         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3641     }
3642
3643     do_prelight (tree_view, tree, node, x, y);
3644 }
3645
3646 static void
3647 ensure_unprelighted (GtkTreeView *tree_view)
3648 {
3649   do_prelight (tree_view,
3650                NULL, NULL,
3651                -1000, -1000); /* coords not possibly over an arrow */
3652
3653   g_assert (tree_view->priv->prelight_node == NULL);
3654 }
3655
3656 static void
3657 update_prelight (GtkTreeView *tree_view,
3658                  gint         x,
3659                  gint         y)
3660 {
3661   int new_y;
3662   GtkRBTree *tree;
3663   GtkRBNode *node;
3664
3665   if (tree_view->priv->tree == NULL)
3666     return;
3667
3668   if (x == -10000)
3669     {
3670       ensure_unprelighted (tree_view);
3671       return;
3672     }
3673
3674   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3675   if (new_y < 0)
3676     new_y = 0;
3677
3678   _gtk_rbtree_find_offset (tree_view->priv->tree,
3679                            new_y, &tree, &node);
3680
3681   if (node)
3682     prelight_or_select (tree_view, tree, node, x, y);
3683 }
3684
3685
3686
3687
3688 /* Our motion arrow is either a box (in the case of the original spot)
3689  * or an arrow.  It is expander_size wide.
3690  */
3691 /*
3692  * 11111111111111
3693  * 01111111111110
3694  * 00111111111100
3695  * 00011111111000
3696  * 00001111110000
3697  * 00000111100000
3698  * 00000111100000
3699  * 00000111100000
3700  * ~ ~ ~ ~ ~ ~ ~
3701  * 00000111100000
3702  * 00000111100000
3703  * 00000111100000
3704  * 00001111110000
3705  * 00011111111000
3706  * 00111111111100
3707  * 01111111111110
3708  * 11111111111111
3709  */
3710
3711 static void
3712 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3713 {
3714   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3715   GtkWidget *widget = GTK_WIDGET (tree_view);
3716   cairo_surface_t *mask_image;
3717   cairo_region_t *mask_region;
3718   gint x;
3719   gint y;
3720   gint width;
3721   gint height;
3722   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3723   GdkWindowAttr attributes;
3724   guint attributes_mask;
3725   cairo_t *cr;
3726
3727   if (!reorder ||
3728       reorder->left_column == tree_view->priv->drag_column ||
3729       reorder->right_column == tree_view->priv->drag_column)
3730     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3731   else if (reorder->left_column || reorder->right_column)
3732     {
3733       GtkAllocation left_allocation, right_allocation;
3734       GdkRectangle visible_rect;
3735       GtkWidget *button;
3736
3737       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3738       if (reorder->left_column)
3739         {
3740           button = gtk_tree_view_column_get_button (reorder->left_column);
3741           gtk_widget_get_allocation (button, &left_allocation);
3742           x = left_allocation.x + left_allocation.width;
3743         }
3744       else
3745         {
3746           button = gtk_tree_view_column_get_button (reorder->right_column);
3747           gtk_widget_get_allocation (button, &right_allocation);
3748           x = right_allocation.x;
3749         }
3750
3751       if (x < visible_rect.x)
3752         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3753       else if (x > visible_rect.x + visible_rect.width)
3754         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3755       else
3756         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3757     }
3758
3759   /* We want to draw the rectangle over the initial location. */
3760   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3761     {
3762       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3763         {
3764           GtkAllocation drag_allocation;
3765           GtkWidget    *button;
3766
3767           if (tree_view->priv->drag_highlight_window)
3768             {
3769               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3770                                         NULL);
3771               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3772             }
3773
3774           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3775           attributes.window_type = GDK_WINDOW_CHILD;
3776           attributes.wclass = GDK_INPUT_OUTPUT;
3777           attributes.x = tree_view->priv->drag_column_x;
3778           attributes.y = 0;
3779           gtk_widget_get_allocation (button, &drag_allocation);
3780           width = attributes.width = drag_allocation.width;
3781           height = attributes.height = drag_allocation.height;
3782           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3783           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3784           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3785           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3786           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3787
3788           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3789           cr = cairo_create (mask_image);
3790
3791           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3792           cairo_stroke (cr);
3793           cairo_destroy (cr);
3794
3795           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3796           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3797                                            mask_region, 0, 0);
3798
3799           cairo_region_destroy (mask_region);
3800           cairo_surface_destroy (mask_image);
3801
3802           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3803         }
3804     }
3805   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3806     {
3807       GtkAllocation button_allocation;
3808       GtkWidget    *button;
3809
3810       width = gtk_tree_view_get_expander_size (tree_view);
3811
3812       /* Get x, y, width, height of arrow */
3813       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3814       if (reorder->left_column)
3815         {
3816           button = gtk_tree_view_column_get_button (reorder->left_column);
3817           gtk_widget_get_allocation (button, &button_allocation);
3818           x += button_allocation.x + button_allocation.width - width/2;
3819           height = button_allocation.height;
3820         }
3821       else
3822         {
3823           button = gtk_tree_view_column_get_button (reorder->right_column);
3824           gtk_widget_get_allocation (button, &button_allocation);
3825           x += button_allocation.x - width/2;
3826           height = button_allocation.height;
3827         }
3828       y -= width/2; /* The arrow takes up only half the space */
3829       height += width;
3830
3831       /* Create the new window */
3832       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3833         {
3834           if (tree_view->priv->drag_highlight_window)
3835             {
3836               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3837                                         NULL);
3838               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3839             }
3840
3841           attributes.window_type = GDK_WINDOW_TEMP;
3842           attributes.wclass = GDK_INPUT_OUTPUT;
3843           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3844           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3845           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3846           attributes.x = x;
3847           attributes.y = y;
3848           attributes.width = width;
3849           attributes.height = height;
3850           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3851                                                                    &attributes, attributes_mask);
3852           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3853
3854           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3855
3856           cr = cairo_create (mask_image);
3857           cairo_move_to (cr, 0, 0);
3858           cairo_line_to (cr, width, 0);
3859           cairo_line_to (cr, width / 2., width / 2);
3860           cairo_move_to (cr, 0, height);
3861           cairo_line_to (cr, width, height);
3862           cairo_line_to (cr, width / 2., height - width / 2.);
3863           cairo_fill (cr);
3864           cairo_destroy (cr);
3865
3866           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3867           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3868                                            mask_region, 0, 0);
3869
3870           cairo_region_destroy (mask_region);
3871           cairo_surface_destroy (mask_image);
3872         }
3873
3874       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3875       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3876     }
3877   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3878            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3879     {
3880       GtkAllocation allocation;
3881       GtkWidget    *button;
3882       gint          expander_size;
3883
3884       expander_size = gtk_tree_view_get_expander_size (tree_view);
3885
3886       /* Get x, y, width, height of arrow */
3887       width = expander_size/2; /* remember, the arrow only takes half the available width */
3888       gdk_window_get_origin (gtk_widget_get_window (widget),
3889                              &x, &y);
3890       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3891         {
3892           gtk_widget_get_allocation (widget, &allocation);
3893           x += allocation.width - width;
3894         }
3895
3896       if (reorder->left_column)
3897         {
3898           button = gtk_tree_view_column_get_button (reorder->left_column);
3899           gtk_widget_get_allocation (button, &allocation);
3900           height = allocation.height;
3901         }
3902       else
3903         {
3904           button = gtk_tree_view_column_get_button (reorder->right_column);
3905           gtk_widget_get_allocation (button, &allocation);
3906           height = allocation.height;
3907         }
3908
3909       y -= expander_size;
3910       height += 2 * expander_size;
3911
3912       /* Create the new window */
3913       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3914           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3915         {
3916           if (tree_view->priv->drag_highlight_window)
3917             {
3918               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3919                                         NULL);
3920               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3921             }
3922
3923           attributes.window_type = GDK_WINDOW_TEMP;
3924           attributes.wclass = GDK_INPUT_OUTPUT;
3925           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3926           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3927           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3928           attributes.x = x;
3929           attributes.y = y;
3930           attributes.width = width;
3931           attributes.height = height;
3932           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget), &attributes, attributes_mask);
3933           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3934
3935           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3936
3937           cr = cairo_create (mask_image);
3938           /* mirror if we're on the left */
3939           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3940             {
3941               cairo_translate (cr, width, 0);
3942               cairo_scale (cr, -1, 1);
3943             }
3944           cairo_move_to (cr, 0, 0);
3945           cairo_line_to (cr, width, width);
3946           cairo_line_to (cr, 0, expander_size);
3947           cairo_move_to (cr, 0, height);
3948           cairo_line_to (cr, width, height - width);
3949           cairo_line_to (cr, 0, height - expander_size);
3950           cairo_fill (cr);
3951           cairo_destroy (cr);
3952
3953           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3954           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3955                                            mask_region, 0, 0);
3956
3957           cairo_region_destroy (mask_region);
3958           cairo_surface_destroy (mask_image);
3959         }
3960
3961       tree_view->priv->drag_column_window_state = arrow_type;
3962       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3963    }
3964   else
3965     {
3966       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3967       gdk_window_hide (tree_view->priv->drag_highlight_window);
3968       return;
3969     }
3970
3971   gdk_window_show (tree_view->priv->drag_highlight_window);
3972   gdk_window_raise (tree_view->priv->drag_highlight_window);
3973 }
3974
3975 static gboolean
3976 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3977                                     GdkEventMotion *event)
3978 {
3979   gint x;
3980   gint new_width;
3981   GtkTreeViewColumn *column;
3982   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3983
3984   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3985
3986   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3987     gdk_window_get_device_position (gtk_widget_get_window (widget),
3988                                     gdk_event_get_device ((GdkEvent *) event),
3989                                     &x, NULL, NULL);
3990   else
3991     x = event->x;
3992
3993   if (tree_view->priv->hadjustment)
3994     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3995
3996   new_width = gtk_tree_view_new_column_width (tree_view,
3997                                               tree_view->priv->drag_pos, &x);
3998   if (x != tree_view->priv->x_drag &&
3999       (new_width != gtk_tree_view_column_get_fixed_width (column)))
4000     {
4001       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
4002
4003       if (gtk_tree_view_column_get_expand (column))
4004         new_width -= tree_view->priv->last_extra_space_per_column;
4005
4006       _gtk_tree_view_column_set_resized_width (column, new_width);
4007
4008
4009       gtk_widget_queue_resize (widget);
4010     }
4011
4012   return FALSE;
4013 }
4014
4015
4016 static void
4017 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
4018                                       GdkEvent    *event)
4019 {
4020   GtkTreeViewColumnReorder *reorder = NULL;
4021   GList *list;
4022   gint mouse_x;
4023
4024   gdk_window_get_device_position (tree_view->priv->header_window,
4025                                   gdk_event_get_device (event),
4026                                   &mouse_x, NULL, NULL);
4027   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4028     {
4029       reorder = (GtkTreeViewColumnReorder *) list->data;
4030       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4031         break;
4032       reorder = NULL;
4033     }
4034
4035   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4036       return;*/
4037
4038   tree_view->priv->cur_reorder = reorder;
4039   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4040 }
4041
4042 static void
4043 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4044 {
4045   GdkRectangle visible_rect;
4046   gint y;
4047   gint offset;
4048
4049   gdk_window_get_device_position (tree_view->priv->bin_window,
4050                                   gdk_device_manager_get_client_pointer (
4051                                     gdk_display_get_device_manager (
4052                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4053                                   NULL, &y, NULL);
4054   y += tree_view->priv->dy;
4055
4056   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4057
4058   /* see if we are near the edge. */
4059   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4060   if (offset > 0)
4061     {
4062       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4063       if (offset < 0)
4064         return;
4065     }
4066
4067   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4068                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4069 }
4070
4071 static gboolean
4072 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4073                                      GdkEvent    *event)
4074 {
4075   GdkRectangle visible_rect;
4076   gint x;
4077   gint offset;
4078
4079   gdk_window_get_device_position (tree_view->priv->bin_window,
4080                                   gdk_event_get_device (event),
4081                                   &x, NULL, NULL);
4082
4083   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4084
4085   /* See if we are near the edge. */
4086   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4087   if (offset > 0)
4088     {
4089       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4090       if (offset < 0)
4091         return TRUE;
4092     }
4093   offset = offset/3;
4094
4095   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4096                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4097
4098   return TRUE;
4099
4100 }
4101
4102 static gboolean
4103 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4104                                   GdkEventMotion *event)
4105 {
4106   GtkAllocation allocation, button_allocation;
4107   GtkTreeView *tree_view = (GtkTreeView *) widget;
4108   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4109   GtkWidget *button;
4110   gint x, y;
4111
4112   /* Sanity Check */
4113   if ((column == NULL) ||
4114       (event->window != tree_view->priv->drag_window))
4115     return FALSE;
4116
4117   button = gtk_tree_view_column_get_button (column);
4118
4119   /* Handle moving the header */
4120   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4121   gtk_widget_get_allocation (widget, &allocation);
4122   gtk_widget_get_allocation (button, &button_allocation);
4123   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4124              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4125   gdk_window_move (tree_view->priv->drag_window, x, y);
4126
4127   /* autoscroll, if needed */
4128   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4129   /* Update the current reorder position and arrow; */
4130   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4131
4132   return TRUE;
4133 }
4134
4135 static void
4136 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4137 {
4138   remove_scroll_timeout (tree_view);
4139   gtk_grab_remove (GTK_WIDGET (tree_view));
4140
4141   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4142     {
4143       GtkTreePath *tmp_path;
4144
4145       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4146
4147       /* The anchor path should be set to the start path */
4148       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4149                                                  tree_view->priv->rubber_band_start_node);
4150
4151       if (tree_view->priv->anchor)
4152         gtk_tree_row_reference_free (tree_view->priv->anchor);
4153
4154       tree_view->priv->anchor =
4155         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4156                                           tree_view->priv->model,
4157                                           tmp_path);
4158
4159       gtk_tree_path_free (tmp_path);
4160
4161       /* ... and the cursor to the end path */
4162       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4163                                                  tree_view->priv->rubber_band_end_node);
4164       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4165       gtk_tree_path_free (tmp_path);
4166
4167       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4168     }
4169
4170   /* Clear status variables */
4171   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4172   tree_view->priv->rubber_band_extend = FALSE;
4173   tree_view->priv->rubber_band_modify = FALSE;
4174
4175   tree_view->priv->rubber_band_start_node = NULL;
4176   tree_view->priv->rubber_band_start_tree = NULL;
4177   tree_view->priv->rubber_band_end_node = NULL;
4178   tree_view->priv->rubber_band_end_tree = NULL;
4179 }
4180
4181 static void
4182 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4183                                                  GtkRBTree   *start_tree,
4184                                                  GtkRBNode   *start_node,
4185                                                  GtkRBTree   *end_tree,
4186                                                  GtkRBNode   *end_node,
4187                                                  gboolean     select,
4188                                                  gboolean     skip_start,
4189                                                  gboolean     skip_end)
4190 {
4191   if (start_node == end_node)
4192     return;
4193
4194   /* We skip the first node and jump inside the loop */
4195   if (skip_start)
4196     goto skip_first;
4197
4198   do
4199     {
4200       /* Small optimization by assuming insensitive nodes are never
4201        * selected.
4202        */
4203       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4204         {
4205           GtkTreePath *path;
4206           gboolean selectable;
4207
4208           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4209           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4210           gtk_tree_path_free (path);
4211
4212           if (!selectable)
4213             goto node_not_selectable;
4214         }
4215
4216       if (select)
4217         {
4218           if (tree_view->priv->rubber_band_extend)
4219             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4220           else if (tree_view->priv->rubber_band_modify)
4221             {
4222               /* Toggle the selection state */
4223               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4224                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4225               else
4226                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4227             }
4228           else
4229             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4230         }
4231       else
4232         {
4233           /* Mirror the above */
4234           if (tree_view->priv->rubber_band_extend)
4235             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4236           else if (tree_view->priv->rubber_band_modify)
4237             {
4238               /* Toggle the selection state */
4239               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4240                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4241               else
4242                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4243             }
4244           else
4245             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4246         }
4247
4248       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4249
4250 node_not_selectable:
4251       if (start_node == end_node)
4252         break;
4253
4254 skip_first:
4255
4256       if (start_node->children)
4257         {
4258           start_tree = start_node->children;
4259           start_node = _gtk_rbtree_first (start_tree);
4260         }
4261       else
4262         {
4263           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4264
4265           if (!start_tree)
4266             /* Ran out of tree */
4267             break;
4268         }
4269
4270       if (skip_end && start_node == end_node)
4271         break;
4272     }
4273   while (TRUE);
4274 }
4275
4276 static void
4277 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4278 {
4279   GtkRBTree *start_tree, *end_tree;
4280   GtkRBNode *start_node, *end_node;
4281
4282   _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);
4283   _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);
4284
4285   /* Handle the start area first */
4286   if (!tree_view->priv->rubber_band_start_node)
4287     {
4288       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4289                                                        start_tree,
4290                                                        start_node,
4291                                                        end_tree,
4292                                                        end_node,
4293                                                        TRUE,
4294                                                        FALSE,
4295                                                        FALSE);
4296     }
4297   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4298            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4299     {
4300       /* New node is above the old one; selection became bigger */
4301       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4302                                                        start_tree,
4303                                                        start_node,
4304                                                        tree_view->priv->rubber_band_start_tree,
4305                                                        tree_view->priv->rubber_band_start_node,
4306                                                        TRUE,
4307                                                        FALSE,
4308                                                        TRUE);
4309     }
4310   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4311            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4312     {
4313       /* New node is below the old one; selection became smaller */
4314       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4315                                                        tree_view->priv->rubber_band_start_tree,
4316                                                        tree_view->priv->rubber_band_start_node,
4317                                                        start_tree,
4318                                                        start_node,
4319                                                        FALSE,
4320                                                        FALSE,
4321                                                        TRUE);
4322     }
4323
4324   tree_view->priv->rubber_band_start_tree = start_tree;
4325   tree_view->priv->rubber_band_start_node = start_node;
4326
4327   /* Next, handle the end area */
4328   if (!tree_view->priv->rubber_band_end_node)
4329     {
4330       /* In the event this happens, start_node was also NULL; this case is
4331        * handled above.
4332        */
4333     }
4334   else if (!end_node)
4335     {
4336       /* Find the last node in the tree */
4337       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4338                                &end_tree, &end_node);
4339
4340       /* Selection reached end of the tree */
4341       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4342                                                        tree_view->priv->rubber_band_end_tree,
4343                                                        tree_view->priv->rubber_band_end_node,
4344                                                        end_tree,
4345                                                        end_node,
4346                                                        TRUE,
4347                                                        TRUE,
4348                                                        FALSE);
4349     }
4350   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4351            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4352     {
4353       /* New node is below the old one; selection became bigger */
4354       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4355                                                        tree_view->priv->rubber_band_end_tree,
4356                                                        tree_view->priv->rubber_band_end_node,
4357                                                        end_tree,
4358                                                        end_node,
4359                                                        TRUE,
4360                                                        TRUE,
4361                                                        FALSE);
4362     }
4363   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4364            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4365     {
4366       /* New node is above the old one; selection became smaller */
4367       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4368                                                        end_tree,
4369                                                        end_node,
4370                                                        tree_view->priv->rubber_band_end_tree,
4371                                                        tree_view->priv->rubber_band_end_node,
4372                                                        FALSE,
4373                                                        TRUE,
4374                                                        FALSE);
4375     }
4376
4377   tree_view->priv->rubber_band_end_tree = end_tree;
4378   tree_view->priv->rubber_band_end_node = end_node;
4379 }
4380
4381 static void
4382 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4383 {
4384   gint x, y;
4385   GdkRectangle old_area;
4386   GdkRectangle new_area;
4387   GdkRectangle common;
4388   cairo_region_t *invalid_region;
4389
4390   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4391   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4392   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4393   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4394
4395   gdk_window_get_device_position (tree_view->priv->bin_window,
4396                                   gdk_device_manager_get_client_pointer (
4397                                     gdk_display_get_device_manager (
4398                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4399                                   &x, &y, NULL);
4400
4401   x = MAX (x, 0);
4402   y = MAX (y, 0) + tree_view->priv->dy;
4403
4404   new_area.x = MIN (tree_view->priv->press_start_x, x);
4405   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4406   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4407   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4408
4409   invalid_region = cairo_region_create_rectangle (&old_area);
4410   cairo_region_union_rectangle (invalid_region, &new_area);
4411
4412   gdk_rectangle_intersect (&old_area, &new_area, &common);
4413   if (common.width > 2 && common.height > 2)
4414     {
4415       cairo_region_t *common_region;
4416
4417       /* make sure the border is invalidated */
4418       common.x += 1;
4419       common.y += 1;
4420       common.width -= 2;
4421       common.height -= 2;
4422
4423       common_region = cairo_region_create_rectangle (&common);
4424
4425       cairo_region_subtract (invalid_region, common_region);
4426       cairo_region_destroy (common_region);
4427     }
4428
4429   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4430
4431   cairo_region_destroy (invalid_region);
4432
4433   tree_view->priv->rubber_band_x = x;
4434   tree_view->priv->rubber_band_y = y;
4435
4436   gtk_tree_view_update_rubber_band_selection (tree_view);
4437 }
4438
4439 static void
4440 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4441                                  cairo_t      *cr)
4442 {
4443   GdkRectangle rect;
4444   GtkStyleContext *context;
4445
4446   cairo_save (cr);
4447
4448   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4449
4450   gtk_style_context_save (context);
4451   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4452
4453   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4454   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4455   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4456   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4457
4458   gdk_cairo_rectangle (cr, &rect);
4459   cairo_clip (cr);
4460
4461   gtk_render_background (context, cr,
4462                          rect.x, rect.y,
4463                          rect.width, rect.height);
4464   gtk_render_frame (context, cr,
4465                     rect.x, rect.y,
4466                     rect.width, rect.height);
4467
4468   gtk_style_context_restore (context);
4469   cairo_restore (cr);
4470 }
4471
4472 static gboolean
4473 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4474                                  GdkEventMotion *event)
4475 {
4476   GtkTreeView *tree_view;
4477   GtkRBTree *tree;
4478   GtkRBNode *node;
4479   gint new_y;
4480
4481   tree_view = (GtkTreeView *) widget;
4482
4483   if (tree_view->priv->tree == NULL)
4484     return FALSE;
4485
4486   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4487     {
4488       gtk_grab_add (GTK_WIDGET (tree_view));
4489       gtk_tree_view_update_rubber_band (tree_view);
4490
4491       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4492     }
4493   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4494     {
4495       gtk_tree_view_update_rubber_band (tree_view);
4496
4497       add_scroll_timeout (tree_view);
4498     }
4499
4500   /* only check for an initiated drag when a button is pressed */
4501   if (tree_view->priv->pressed_button >= 0
4502       && !tree_view->priv->rubber_band_status)
4503     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4504
4505   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4506   if (new_y < 0)
4507     new_y = 0;
4508
4509   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4510
4511   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4512   if ((tree_view->priv->button_pressed_node != NULL) &&
4513       (tree_view->priv->button_pressed_node != node))
4514     node = NULL;
4515
4516   tree_view->priv->event_last_x = event->x;
4517   tree_view->priv->event_last_y = event->y;
4518
4519   prelight_or_select (tree_view, tree, node, event->x, event->y);
4520
4521   return TRUE;
4522 }
4523
4524 static gboolean
4525 gtk_tree_view_motion (GtkWidget      *widget,
4526                       GdkEventMotion *event)
4527 {
4528   GtkTreeView *tree_view;
4529
4530   tree_view = (GtkTreeView *) widget;
4531
4532   /* Resizing a column */
4533   if (tree_view->priv->in_column_resize)
4534     return gtk_tree_view_motion_resize_column (widget, event);
4535
4536   /* Drag column */
4537   if (tree_view->priv->in_column_drag)
4538     return gtk_tree_view_motion_drag_column (widget, event);
4539
4540   /* Sanity check it */
4541   if (event->window == tree_view->priv->bin_window)
4542     return gtk_tree_view_motion_bin_window (widget, event);
4543
4544   return FALSE;
4545 }
4546
4547 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4548  * the tree is empty.
4549  */
4550 static void
4551 invalidate_empty_focus (GtkTreeView *tree_view)
4552 {
4553   GdkRectangle area;
4554
4555   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4556     return;
4557
4558   area.x = 0;
4559   area.y = 0;
4560   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4561   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4562   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4563 }
4564
4565 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4566  * is empty.
4567  */
4568 static void
4569 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4570 {
4571   GtkWidget *widget = GTK_WIDGET (tree_view);
4572   gint w, h;
4573
4574   if (!gtk_widget_has_visible_focus (widget))
4575     return;
4576
4577   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4578   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4579
4580   if (w > 0 && h > 0)
4581     {
4582       GtkStyleContext *context;
4583
4584       context = gtk_widget_get_style_context (widget);
4585
4586       gtk_render_focus (context, cr, 1, 1, w, h);
4587     }
4588 }
4589
4590 typedef enum {
4591   GTK_TREE_VIEW_GRID_LINE,
4592   GTK_TREE_VIEW_TREE_LINE,
4593   GTK_TREE_VIEW_FOREGROUND_LINE
4594 } GtkTreeViewLineType;
4595
4596 static void
4597 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4598                          cairo_t             *cr,
4599                          GtkTreeViewLineType  type,
4600                          int                  x1,
4601                          int                  y1,
4602                          int                  x2,
4603                          int                  y2)
4604 {
4605   cairo_save (cr);
4606
4607   switch (type)
4608     {
4609     case GTK_TREE_VIEW_TREE_LINE:
4610       cairo_set_source_rgb (cr, 0, 0, 0);
4611       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4612       if (tree_view->priv->tree_line_dashes[0])
4613         cairo_set_dash (cr,
4614                         tree_view->priv->tree_line_dashes,
4615                         2, 0.5);
4616       break;
4617     case GTK_TREE_VIEW_GRID_LINE:
4618       cairo_set_source_rgb (cr, 0, 0, 0);
4619       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4620       if (tree_view->priv->grid_line_dashes[0])
4621         cairo_set_dash (cr,
4622                         tree_view->priv->grid_line_dashes,
4623                         2, 0.5);
4624       break;
4625     default:
4626       g_assert_not_reached ();
4627       /* fall through */
4628     case GTK_TREE_VIEW_FOREGROUND_LINE:
4629       {
4630         GtkStyleContext *context;
4631         GtkStateFlags state;
4632         GdkRGBA color;
4633
4634         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4635         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4636
4637         cairo_set_line_width (cr, 1.0);
4638         gtk_style_context_get_color (context, state, &color);
4639         gdk_cairo_set_source_rgba (cr, &color);
4640       }
4641
4642       break;
4643     }
4644
4645   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4646   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4647   cairo_stroke (cr);
4648
4649   cairo_restore (cr);
4650 }
4651
4652 static void
4653 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4654                                cairo_t        *cr,
4655                                gint            n_visible_columns)
4656 {
4657   GList *list = tree_view->priv->columns;
4658   gint i = 0;
4659   gint current_x = 0;
4660
4661   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4662       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4663     return;
4664
4665   /* Only draw the lines for visible rows and columns */
4666   for (list = tree_view->priv->columns; list; list = list->next, i++)
4667     {
4668       GtkTreeViewColumn *column = list->data;
4669
4670       /* We don't want a line for the last column */
4671       if (i == n_visible_columns - 1)
4672         break;
4673
4674       if (!gtk_tree_view_column_get_visible (column))
4675         continue;
4676
4677       current_x += gtk_tree_view_column_get_width (column);
4678
4679       gtk_tree_view_draw_line (tree_view, cr,
4680                                GTK_TREE_VIEW_GRID_LINE,
4681                                current_x - 1, 0,
4682                                current_x - 1, tree_view->priv->height);
4683     }
4684 }
4685
4686 /* Warning: Very scary function.
4687  * Modify at your own risk
4688  *
4689  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4690  * FIXME: It's not...
4691  */
4692 static gboolean
4693 gtk_tree_view_bin_draw (GtkWidget      *widget,
4694                         cairo_t        *cr)
4695 {
4696   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4697   GtkTreePath *path;
4698   GtkRBTree *tree;
4699   GList *list;
4700   GtkRBNode *node;
4701   GtkRBNode *drag_highlight = NULL;
4702   GtkRBTree *drag_highlight_tree = NULL;
4703   GtkTreeIter iter;
4704   gint new_y;
4705   gint y_offset, cell_offset;
4706   gint max_height;
4707   gint depth;
4708   GdkRectangle background_area;
4709   GdkRectangle cell_area;
4710   GdkRectangle clip;
4711   guint flags;
4712   gint highlight_x;
4713   gint expander_cell_width;
4714   gint bin_window_width;
4715   gint bin_window_height;
4716   GtkTreePath *drag_dest_path;
4717   GList *first_column, *last_column;
4718   gint vertical_separator;
4719   gint horizontal_separator;
4720   gboolean allow_rules;
4721   gboolean has_can_focus_cell;
4722   gboolean rtl;
4723   gint n_visible_columns;
4724   gint grid_line_width;
4725   gint expander_size;
4726   gboolean draw_vgrid_lines, draw_hgrid_lines;
4727   GtkStyleContext *context;
4728   gboolean parity;
4729
4730   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4731   context = gtk_widget_get_style_context (widget);
4732
4733   gtk_widget_style_get (widget,
4734                         "horizontal-separator", &horizontal_separator,
4735                         "vertical-separator", &vertical_separator,
4736                         "allow-rules", &allow_rules,
4737                         NULL);
4738
4739   if (tree_view->priv->tree == NULL)
4740     {
4741       draw_empty_focus (tree_view, cr);
4742       return TRUE;
4743     }
4744
4745   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4746   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4747   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4748   cairo_clip (cr);
4749   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4750     return TRUE;
4751
4752   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4753
4754   if (new_y < 0)
4755     new_y = 0;
4756   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4757
4758   if (tree_view->priv->height < bin_window_height)
4759     {
4760       gtk_style_context_save (context);
4761       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4762
4763       gtk_render_background (context, cr,
4764                              0, tree_view->priv->height,
4765                              bin_window_width,
4766                              bin_window_height - tree_view->priv->height);
4767
4768       gtk_style_context_restore (context);
4769     }
4770
4771   if (node == NULL)
4772     return TRUE;
4773
4774   /* find the path for the node */
4775   path = _gtk_tree_path_new_from_rbtree (tree, node);
4776   gtk_tree_model_get_iter (tree_view->priv->model,
4777                            &iter,
4778                            path);
4779   depth = gtk_tree_path_get_depth (path);
4780   gtk_tree_path_free (path);
4781
4782   drag_dest_path = NULL;
4783
4784   if (tree_view->priv->drag_dest_row)
4785     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4786
4787   if (drag_dest_path)
4788     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4789                               &drag_highlight_tree, &drag_highlight);
4790
4791   draw_vgrid_lines =
4792     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4793     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4794   draw_hgrid_lines =
4795     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4796     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4797   expander_size = gtk_tree_view_get_expander_size (tree_view);
4798
4799   if (draw_vgrid_lines || draw_hgrid_lines)
4800     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4801
4802   n_visible_columns = 0;
4803   for (list = tree_view->priv->columns; list; list = list->next)
4804     {
4805       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4806         continue;
4807       n_visible_columns ++;
4808     }
4809
4810   /* Find the last column */
4811   for (last_column = g_list_last (tree_view->priv->columns);
4812        last_column &&
4813        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4814        last_column = last_column->prev)
4815     ;
4816
4817   /* and the first */
4818   for (first_column = g_list_first (tree_view->priv->columns);
4819        first_column &&
4820        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4821        first_column = first_column->next)
4822     ;
4823
4824   /* Actually process the expose event.  To do this, we want to
4825    * start at the first node of the event, and walk the tree in
4826    * order, drawing each successive node.
4827    */
4828
4829   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4830
4831   do
4832     {
4833       gboolean is_separator = FALSE;
4834       gboolean is_first = FALSE;
4835       gboolean is_last = FALSE;
4836       gint n_col = 0;
4837
4838       parity = !parity;
4839       is_separator = row_is_separator (tree_view, &iter, NULL);
4840
4841       max_height = gtk_tree_view_get_row_height (tree_view, node);
4842
4843       cell_offset = 0;
4844       highlight_x = 0; /* should match x coord of first cell */
4845       expander_cell_width = 0;
4846
4847       background_area.y = y_offset + clip.y;
4848       background_area.height = max_height;
4849
4850       flags = 0;
4851
4852       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4853         flags |= GTK_CELL_RENDERER_PRELIT;
4854
4855       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4856         flags |= GTK_CELL_RENDERER_SELECTED;
4857
4858       /* we *need* to set cell data on all cells before the call
4859        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4860        * return a correct value.
4861        */
4862       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4863            list;
4864            list = (rtl ? list->prev : list->next))
4865         {
4866           GtkTreeViewColumn *column = list->data;
4867           gtk_tree_view_column_cell_set_cell_data (column,
4868                                                    tree_view->priv->model,
4869                                                    &iter,
4870                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4871                                                    node->children?TRUE:FALSE);
4872         }
4873
4874       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4875
4876       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4877            list;
4878            list = (rtl ? list->prev : list->next))
4879         {
4880           GtkTreeViewColumn *column = list->data;
4881           GtkRegionFlags row_flags = 0, column_flags = 0;
4882           GtkStateFlags state = 0;
4883           gint width;
4884           gboolean draw_focus;
4885
4886           if (!gtk_tree_view_column_get_visible (column))
4887             continue;
4888
4889           n_col++;
4890           width = gtk_tree_view_column_get_width (column);
4891
4892           if (cell_offset > clip.x + clip.width ||
4893               cell_offset + width < clip.x)
4894             {
4895               cell_offset += width;
4896               continue;
4897             }
4898
4899           if (gtk_tree_view_column_get_sort_indicator (column))
4900             flags |= GTK_CELL_RENDERER_SORTED;
4901           else
4902             flags &= ~GTK_CELL_RENDERER_SORTED;
4903
4904           if (tree_view->priv->cursor_node == node)
4905             flags |= GTK_CELL_RENDERER_FOCUSED;
4906           else
4907             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4908
4909           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
4910             flags |= GTK_CELL_RENDERER_EXPANDABLE;
4911           else
4912             flags &= ~GTK_CELL_RENDERER_EXPANDABLE;
4913
4914           if (node->children)
4915             flags |= GTK_CELL_RENDERER_EXPANDED;
4916           else
4917             flags &= ~GTK_CELL_RENDERER_EXPANDED;
4918
4919           background_area.x = cell_offset;
4920           background_area.width = width;
4921
4922           cell_area = background_area;
4923           cell_area.y += vertical_separator / 2;
4924           cell_area.x += horizontal_separator / 2;
4925           cell_area.height -= vertical_separator;
4926           cell_area.width -= horizontal_separator;
4927
4928           if (draw_vgrid_lines)
4929             {
4930               if (list == first_column)
4931                 {
4932                   cell_area.width -= grid_line_width / 2;
4933                 }
4934               else if (list == last_column)
4935                 {
4936                   cell_area.x += grid_line_width / 2;
4937                   cell_area.width -= grid_line_width / 2;
4938                 }
4939               else
4940                 {
4941                   cell_area.x += grid_line_width / 2;
4942                   cell_area.width -= grid_line_width;
4943                 }
4944             }
4945
4946           if (draw_hgrid_lines)
4947             {
4948               cell_area.y += grid_line_width / 2;
4949               cell_area.height -= grid_line_width;
4950             }
4951
4952           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4953             {
4954               cell_offset += gtk_tree_view_column_get_width (column);
4955               continue;
4956             }
4957
4958           gtk_tree_view_column_cell_set_cell_data (column,
4959                                                    tree_view->priv->model,
4960                                                    &iter,
4961                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4962                                                    node->children?TRUE:FALSE);
4963
4964           /* Select the detail for drawing the cell.  relevant
4965            * factors are parity, sortedness, and whether to
4966            * display rules.
4967            */
4968           if (allow_rules && tree_view->priv->has_rules)
4969             {
4970               if (parity)
4971                 row_flags |= GTK_REGION_ODD;
4972               else
4973                 row_flags |= GTK_REGION_EVEN;
4974             }
4975
4976           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4977               n_visible_columns >= 3)
4978             column_flags |= GTK_REGION_SORTED;
4979
4980           is_first = (rtl ? !list->next : !list->prev);
4981           is_last = (rtl ? !list->prev : !list->next);
4982
4983           if (is_first)
4984             column_flags |= GTK_REGION_FIRST;
4985
4986           if (is_last)
4987             column_flags |= GTK_REGION_LAST;
4988
4989           if ((n_col % 2) == 0)
4990             column_flags |= GTK_REGION_EVEN;
4991           else
4992             column_flags |= GTK_REGION_ODD;
4993
4994           gtk_style_context_save (context);
4995
4996           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4997           gtk_style_context_set_state (context, state);
4998
4999           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
5000           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
5001           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
5002
5003           if (node == tree_view->priv->cursor_node && has_can_focus_cell
5004               && ((column == tree_view->priv->focus_column
5005                    && tree_view->priv->draw_keyfocus &&
5006                    gtk_widget_has_visible_focus (widget))
5007                   || (column == tree_view->priv->edited_column)))
5008             draw_focus = TRUE;
5009           else
5010             draw_focus = FALSE;
5011
5012           /* Draw background */
5013           gtk_render_background (context, cr,
5014                                  background_area.x,
5015                                  background_area.y,
5016                                  background_area.width,
5017                                  background_area.height);
5018
5019           /* Draw frame */
5020           gtk_render_frame (context, cr,
5021                             background_area.x,
5022                             background_area.y,
5023                             background_area.width,
5024                             background_area.height);
5025
5026           if (gtk_tree_view_is_expander_column (tree_view, column))
5027             {
5028               if (!rtl)
5029                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5030               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5031
5032               if (gtk_tree_view_draw_expanders (tree_view))
5033                 {
5034                   int expander_size = gtk_tree_view_get_expander_size (tree_view);
5035                   if (!rtl)
5036                     cell_area.x += depth * expander_size;
5037                   cell_area.width -= depth * expander_size;
5038                 }
5039
5040               /* If we have an expander column, the highlight underline
5041                * starts with that column, so that it indicates which
5042                * level of the tree we're dropping at.
5043                */
5044               highlight_x = cell_area.x;
5045               expander_cell_width = cell_area.width;
5046
5047               if (is_separator)
5048                 {
5049                   gtk_style_context_save (context);
5050                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5051
5052                   gtk_render_line (context, cr,
5053                                    cell_area.x,
5054                                    cell_area.y + cell_area.height / 2,
5055                                    cell_area.x + cell_area.width,
5056                                    cell_area.y + cell_area.height / 2);
5057
5058                   gtk_style_context_restore (context);
5059                 }
5060               else
5061                 {
5062                   _gtk_tree_view_column_cell_render (column,
5063                                                      cr,
5064                                                      &background_area,
5065                                                      &cell_area,
5066                                                      flags,
5067                                                      draw_focus);
5068                 }
5069
5070               if (gtk_tree_view_draw_expanders (tree_view)
5071                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5072                 {
5073                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5074                                             cr,
5075                                             tree,
5076                                             node);
5077                 }
5078             }
5079           else
5080             {
5081               if (is_separator)
5082                 {
5083                   gtk_style_context_save (context);
5084                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5085
5086                   gtk_render_line (context, cr,
5087                                    cell_area.x,
5088                                    cell_area.y + cell_area.height / 2,
5089                                    cell_area.x + cell_area.width,
5090                                    cell_area.y + cell_area.height / 2);
5091
5092                   gtk_style_context_restore (context);
5093                 }
5094               else
5095                 _gtk_tree_view_column_cell_render (column,
5096                                                    cr,
5097                                                    &background_area,
5098                                                    &cell_area,
5099                                                    flags,
5100                                                    draw_focus);
5101             }
5102
5103           if (draw_hgrid_lines)
5104             {
5105               if (background_area.y > 0)
5106                 gtk_tree_view_draw_line (tree_view, cr,
5107                                          GTK_TREE_VIEW_GRID_LINE,
5108                                          background_area.x, background_area.y,
5109                                          background_area.x + background_area.width,
5110                                          background_area.y);
5111
5112               if (y_offset + max_height >= clip.height)
5113                 gtk_tree_view_draw_line (tree_view, cr,
5114                                          GTK_TREE_VIEW_GRID_LINE,
5115                                          background_area.x, background_area.y + max_height,
5116                                          background_area.x + background_area.width,
5117                                          background_area.y + max_height);
5118             }
5119
5120           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5121               tree_view->priv->tree_lines_enabled)
5122             {
5123               gint x = background_area.x;
5124               gint mult = rtl ? -1 : 1;
5125               gint y0 = background_area.y;
5126               gint y1 = background_area.y + background_area.height/2;
5127               gint y2 = background_area.y + background_area.height;
5128
5129               if (rtl)
5130                 x += background_area.width - 1;
5131
5132               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5133                   && depth > 1)
5134                 {
5135                   gtk_tree_view_draw_line (tree_view, cr,
5136                                            GTK_TREE_VIEW_TREE_LINE,
5137                                            x + expander_size * (depth - 1.5) * mult,
5138                                            y1,
5139                                            x + expander_size * (depth - 1.1) * mult,
5140                                            y1);
5141                 }
5142               else if (depth > 1)
5143                 {
5144                   gtk_tree_view_draw_line (tree_view, cr,
5145                                            GTK_TREE_VIEW_TREE_LINE,
5146                                            x + expander_size * (depth - 1.5) * mult,
5147                                            y1,
5148                                            x + expander_size * (depth - 0.5) * mult,
5149                                            y1);
5150                 }
5151
5152               if (depth > 1)
5153                 {
5154                   gint i;
5155                   GtkRBNode *tmp_node;
5156                   GtkRBTree *tmp_tree;
5157
5158                   if (!_gtk_rbtree_next (tree, node))
5159                     gtk_tree_view_draw_line (tree_view, cr,
5160                                              GTK_TREE_VIEW_TREE_LINE,
5161                                              x + expander_size * (depth - 1.5) * mult,
5162                                              y0,
5163                                              x + expander_size * (depth - 1.5) * mult,
5164                                              y1);
5165                   else
5166                     gtk_tree_view_draw_line (tree_view, cr,
5167                                              GTK_TREE_VIEW_TREE_LINE,
5168                                              x + expander_size * (depth - 1.5) * mult,
5169                                              y0,
5170                                              x + expander_size * (depth - 1.5) * mult,
5171                                              y2);
5172
5173                   tmp_node = tree->parent_node;
5174                   tmp_tree = tree->parent_tree;
5175
5176                   for (i = depth - 2; i > 0; i--)
5177                     {
5178                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5179                         gtk_tree_view_draw_line (tree_view, cr,
5180                                                  GTK_TREE_VIEW_TREE_LINE,
5181                                                  x + expander_size * (i - 0.5) * mult,
5182                                                  y0,
5183                                                  x + expander_size * (i - 0.5) * mult,
5184                                                  y2);
5185
5186                       tmp_node = tmp_tree->parent_node;
5187                       tmp_tree = tmp_tree->parent_tree;
5188                     }
5189                 }
5190             }
5191
5192           gtk_style_context_restore (context);
5193           cell_offset += gtk_tree_view_column_get_width (column);
5194         }
5195
5196       if (node == drag_highlight)
5197         {
5198           /* Draw indicator for the drop
5199            */
5200           gint highlight_y = -1;
5201           GtkRBTree *tree = NULL;
5202           GtkRBNode *node = NULL;
5203
5204           gtk_style_context_save (context);
5205           gtk_style_context_add_class (context, GTK_STYLE_CLASS_DND);
5206
5207           switch (tree_view->priv->drag_dest_pos)
5208             {
5209             case GTK_TREE_VIEW_DROP_BEFORE:
5210               highlight_y = background_area.y - 1;
5211               if (highlight_y < 0)
5212                       highlight_y = 0;
5213               break;
5214
5215             case GTK_TREE_VIEW_DROP_AFTER:
5216               highlight_y = background_area.y + background_area.height - 1;
5217               break;
5218
5219             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5220             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5221               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5222
5223               if (tree == NULL)
5224                 break;
5225
5226               gtk_render_frame (context, cr,
5227                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node),
5228                                 gdk_window_get_width (tree_view->priv->bin_window),
5229                                 gtk_tree_view_get_row_height (tree_view, node));
5230               break;
5231             }
5232
5233           if (highlight_y >= 0)
5234             {
5235               gtk_tree_view_draw_line (tree_view, cr,
5236                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5237                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5238                                        highlight_y,
5239                                        rtl ? 0 : bin_window_width,
5240                                        highlight_y);
5241             }
5242
5243           gtk_style_context_restore (context);
5244         }
5245
5246       /* draw the big row-spanning focus rectangle, if needed */
5247       if (!has_can_focus_cell && node == tree_view->priv->cursor_node &&
5248           tree_view->priv->draw_keyfocus &&
5249           gtk_widget_has_visible_focus (widget))
5250         {
5251           gint tmp_y, tmp_height;
5252           GtkStateFlags focus_rect_state = 0;
5253
5254           gtk_style_context_save (context);
5255
5256           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5257           gtk_style_context_set_state (context, focus_rect_state);
5258
5259           if (draw_hgrid_lines)
5260             {
5261               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5262               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5263             }
5264           else
5265             {
5266               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5267               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5268             }
5269
5270           gtk_render_focus (context, cr,
5271                             0, tmp_y,
5272                             gdk_window_get_width (tree_view->priv->bin_window),
5273                             tmp_height);
5274
5275           gtk_style_context_restore (context);
5276         }
5277
5278       y_offset += max_height;
5279       if (node->children)
5280         {
5281           GtkTreeIter parent = iter;
5282           gboolean has_child;
5283
5284           tree = node->children;
5285           node = _gtk_rbtree_first (tree);
5286
5287           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5288                                                     &iter,
5289                                                     &parent);
5290           depth++;
5291
5292           /* Sanity Check! */
5293           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5294         }
5295       else
5296         {
5297           gboolean done = FALSE;
5298
5299           do
5300             {
5301               node = _gtk_rbtree_next (tree, node);
5302               if (node != NULL)
5303                 {
5304                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5305                   done = TRUE;
5306
5307                   /* Sanity Check! */
5308                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5309                 }
5310               else
5311                 {
5312                   GtkTreeIter parent_iter = iter;
5313                   gboolean has_parent;
5314
5315                   node = tree->parent_node;
5316                   tree = tree->parent_tree;
5317                   if (tree == NULL)
5318                     /* we should go to done to free some memory */
5319                     goto done;
5320                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5321                                                            &iter,
5322                                                            &parent_iter);
5323                   depth--;
5324
5325                   /* Sanity check */
5326                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5327                 }
5328             }
5329           while (!done);
5330         }
5331     }
5332   while (y_offset < clip.height);
5333
5334 done:
5335   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5336
5337   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5338     gtk_tree_view_paint_rubber_band (tree_view, cr);
5339
5340   if (drag_dest_path)
5341     gtk_tree_path_free (drag_dest_path);
5342
5343   return FALSE;
5344 }
5345
5346 static gboolean
5347 gtk_tree_view_draw (GtkWidget *widget,
5348                     cairo_t   *cr)
5349 {
5350   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5351   GtkWidget   *button;
5352
5353   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5354     {
5355       GtkStyleContext *context;
5356       GList *tmp_list;
5357
5358       context = gtk_widget_get_style_context (widget);
5359
5360       cairo_save (cr);
5361
5362       gtk_style_context_save (context);
5363       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5364
5365       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5366
5367       gtk_tree_view_bin_draw (widget, cr);
5368
5369       gtk_style_context_restore (context);
5370       cairo_restore (cr);
5371
5372       /* We can't just chain up to Container::draw as it will try to send the
5373        * event to the headers, so we handle propagating it to our children
5374        * (eg. widgets being edited) ourselves.
5375        */
5376       tmp_list = tree_view->priv->children;
5377       while (tmp_list)
5378         {
5379           GtkTreeViewChild *child = tmp_list->data;
5380           tmp_list = tmp_list->next;
5381
5382           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5383         }
5384     }
5385
5386   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5387     {
5388       GList *list;
5389
5390       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5391         {
5392           GtkTreeViewColumn *column = list->data;
5393
5394           if (column == tree_view->priv->drag_column)
5395             continue;
5396
5397           if (gtk_tree_view_column_get_visible (column))
5398             {
5399               button = gtk_tree_view_column_get_button (column);
5400               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5401                                             button, cr);
5402             }
5403         }
5404     }
5405
5406   if (tree_view->priv->drag_window &&
5407       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5408     {
5409       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5410       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5411                                     button, cr);
5412     }
5413
5414   return FALSE;
5415 }
5416
5417 enum
5418 {
5419   DROP_HOME,
5420   DROP_RIGHT,
5421   DROP_LEFT,
5422   DROP_END
5423 };
5424
5425 /* returns 0x1 when no column has been found -- yes it's hackish */
5426 static GtkTreeViewColumn *
5427 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5428                                GtkTreeViewColumn *column,
5429                                gint               drop_position)
5430 {
5431   GtkTreeViewColumn *left_column = NULL;
5432   GtkTreeViewColumn *cur_column = NULL;
5433   GList *tmp_list;
5434
5435   if (!gtk_tree_view_column_get_reorderable (column))
5436     return (GtkTreeViewColumn *)0x1;
5437
5438   switch (drop_position)
5439     {
5440       case DROP_HOME:
5441         /* find first column where we can drop */
5442         tmp_list = tree_view->priv->columns;
5443         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5444           return (GtkTreeViewColumn *)0x1;
5445
5446         while (tmp_list)
5447           {
5448             g_assert (tmp_list);
5449
5450             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5451             tmp_list = tmp_list->next;
5452
5453             if (left_column &&
5454                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5455               continue;
5456
5457             if (!tree_view->priv->column_drop_func)
5458               return left_column;
5459
5460             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5461               {
5462                 left_column = cur_column;
5463                 continue;
5464               }
5465
5466             return left_column;
5467           }
5468
5469         if (!tree_view->priv->column_drop_func)
5470           return left_column;
5471
5472         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5473           return left_column;
5474         else
5475           return (GtkTreeViewColumn *)0x1;
5476         break;
5477
5478       case DROP_RIGHT:
5479         /* find first column after column where we can drop */
5480         tmp_list = tree_view->priv->columns;
5481
5482         for (; tmp_list; tmp_list = tmp_list->next)
5483           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5484             break;
5485
5486         if (!tmp_list || !tmp_list->next)
5487           return (GtkTreeViewColumn *)0x1;
5488
5489         tmp_list = tmp_list->next;
5490         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5491         tmp_list = tmp_list->next;
5492
5493         while (tmp_list)
5494           {
5495             g_assert (tmp_list);
5496
5497             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5498             tmp_list = tmp_list->next;
5499
5500             if (left_column &&
5501                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5502               {
5503                 left_column = cur_column;
5504                 if (tmp_list)
5505                   tmp_list = tmp_list->next;
5506                 continue;
5507               }
5508
5509             if (!tree_view->priv->column_drop_func)
5510               return left_column;
5511
5512             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5513               {
5514                 left_column = cur_column;
5515                 continue;
5516               }
5517
5518             return left_column;
5519           }
5520
5521         if (!tree_view->priv->column_drop_func)
5522           return left_column;
5523
5524         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5525           return left_column;
5526         else
5527           return (GtkTreeViewColumn *)0x1;
5528         break;
5529
5530       case DROP_LEFT:
5531         /* find first column before column where we can drop */
5532         tmp_list = tree_view->priv->columns;
5533
5534         for (; tmp_list; tmp_list = tmp_list->next)
5535           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5536             break;
5537
5538         if (!tmp_list || !tmp_list->prev)
5539           return (GtkTreeViewColumn *)0x1;
5540
5541         tmp_list = tmp_list->prev;
5542         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5543         tmp_list = tmp_list->prev;
5544
5545         while (tmp_list)
5546           {
5547             g_assert (tmp_list);
5548
5549             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5550
5551             if (left_column &&
5552                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5553               {
5554                 /*if (!tmp_list->prev)
5555                   return (GtkTreeViewColumn *)0x1;
5556                   */
5557 /*
5558                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5559                 tmp_list = tmp_list->prev->prev;
5560                 continue;*/
5561
5562                 cur_column = left_column;
5563                 if (tmp_list)
5564                   tmp_list = tmp_list->prev;
5565                 continue;
5566               }
5567
5568             if (!tree_view->priv->column_drop_func)
5569               return left_column;
5570
5571             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5572               return left_column;
5573
5574             cur_column = left_column;
5575             tmp_list = tmp_list->prev;
5576           }
5577
5578         if (!tree_view->priv->column_drop_func)
5579           return NULL;
5580
5581         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5582           return NULL;
5583         else
5584           return (GtkTreeViewColumn *)0x1;
5585         break;
5586
5587       case DROP_END:
5588         /* same as DROP_HOME case, but doing it backwards */
5589         tmp_list = g_list_last (tree_view->priv->columns);
5590         cur_column = NULL;
5591
5592         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5593           return (GtkTreeViewColumn *)0x1;
5594
5595         while (tmp_list)
5596           {
5597             g_assert (tmp_list);
5598
5599             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5600
5601             if (left_column &&
5602                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5603               {
5604                 cur_column = left_column;
5605                 tmp_list = tmp_list->prev;
5606               }
5607
5608             if (!tree_view->priv->column_drop_func)
5609               return left_column;
5610
5611             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5612               return left_column;
5613
5614             cur_column = left_column;
5615             tmp_list = tmp_list->prev;
5616           }
5617
5618         if (!tree_view->priv->column_drop_func)
5619           return NULL;
5620
5621         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5622           return NULL;
5623         else
5624           return (GtkTreeViewColumn *)0x1;
5625         break;
5626     }
5627
5628   return (GtkTreeViewColumn *)0x1;
5629 }
5630
5631 static gboolean
5632 gtk_tree_view_key_press (GtkWidget   *widget,
5633                          GdkEventKey *event)
5634 {
5635   GtkTreeView *tree_view = (GtkTreeView *) widget;
5636   GtkWidget   *button;
5637
5638   if (tree_view->priv->rubber_band_status)
5639     {
5640       if (event->keyval == GDK_KEY_Escape)
5641         gtk_tree_view_stop_rubber_band (tree_view);
5642
5643       return TRUE;
5644     }
5645
5646   if (tree_view->priv->in_column_drag)
5647     {
5648       if (event->keyval == GDK_KEY_Escape)
5649         {
5650           tree_view->priv->cur_reorder = NULL;
5651           gtk_tree_view_button_release_drag_column (widget, NULL);
5652         }
5653       return TRUE;
5654     }
5655
5656   if (tree_view->priv->headers_visible)
5657     {
5658       GList *focus_column;
5659       gboolean rtl;
5660
5661       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5662
5663       for (focus_column = tree_view->priv->columns;
5664            focus_column;
5665            focus_column = focus_column->next)
5666         {
5667           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5668
5669           button = gtk_tree_view_column_get_button (column);
5670           if (gtk_widget_has_focus (button))
5671             break;
5672         }
5673
5674       if (focus_column &&
5675           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5676           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5677            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5678         {
5679           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5680           gint max_width, min_width;
5681
5682           if (!gtk_tree_view_column_get_resizable (column))
5683             {
5684               gtk_widget_error_bell (widget);
5685               return TRUE;
5686             }
5687
5688           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5689               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5690             {
5691               GtkRequisition button_req;
5692               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5693               gint new_width;
5694
5695               button = gtk_tree_view_column_get_button (column);
5696
5697               gtk_widget_get_preferred_size (button, &button_req, NULL);
5698
5699               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5700               new_width -= 2;
5701               if (new_width < 0)
5702                 new_width = 0;
5703
5704               _gtk_tree_view_column_set_resized_width (column, new_width);
5705
5706               min_width = gtk_tree_view_column_get_min_width (column);
5707               if (min_width == -1)
5708                 new_width = MAX (button_req.width, new_width);
5709               else
5710                 {
5711                   new_width = MAX (min_width, new_width);
5712                 }
5713
5714               max_width = gtk_tree_view_column_get_max_width (column);
5715               if (max_width != -1)
5716                 new_width = MIN (new_width, max_width);
5717
5718               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5719
5720               if (new_width != old_width)
5721                 {
5722                   _gtk_tree_view_column_set_resized_width (column, new_width);
5723                   gtk_widget_queue_resize (widget);
5724                 }
5725               else
5726                 gtk_widget_error_bell (widget);
5727             }
5728           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5729                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5730             {
5731               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5732               gint new_width;
5733
5734               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5735               new_width += 2;
5736
5737               max_width = gtk_tree_view_column_get_max_width (column);
5738               if (max_width != -1)
5739                 new_width = MIN (new_width, max_width);
5740
5741               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5742
5743               if (new_width != old_width)
5744                 {
5745                   _gtk_tree_view_column_set_resized_width (column, new_width);
5746                   gtk_widget_queue_resize (widget);
5747                 }
5748               else
5749                 gtk_widget_error_bell (widget);
5750             }
5751
5752           return TRUE;
5753         }
5754
5755       if (focus_column &&
5756           (event->state & GDK_MOD1_MASK) &&
5757           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5758            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5759            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5760            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5761         {
5762           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5763
5764           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5765               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5766             {
5767               GtkTreeViewColumn *col;
5768               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5769               if (col != (GtkTreeViewColumn *)0x1)
5770                 gtk_tree_view_move_column_after (tree_view, column, col);
5771               else
5772                 gtk_widget_error_bell (widget);
5773             }
5774           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5775                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5776             {
5777               GtkTreeViewColumn *col;
5778               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5779               if (col != (GtkTreeViewColumn *)0x1)
5780                 gtk_tree_view_move_column_after (tree_view, column, col);
5781               else
5782                 gtk_widget_error_bell (widget);
5783             }
5784           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5785             {
5786               GtkTreeViewColumn *col;
5787               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5788               if (col != (GtkTreeViewColumn *)0x1)
5789                 gtk_tree_view_move_column_after (tree_view, column, col);
5790               else
5791                 gtk_widget_error_bell (widget);
5792             }
5793           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5794             {
5795               GtkTreeViewColumn *col;
5796               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5797               if (col != (GtkTreeViewColumn *)0x1)
5798                 gtk_tree_view_move_column_after (tree_view, column, col);
5799               else
5800                 gtk_widget_error_bell (widget);
5801             }
5802
5803           return TRUE;
5804         }
5805     }
5806
5807   /* Chain up to the parent class.  It handles the keybindings. */
5808   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5809     return TRUE;
5810
5811   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5812     {
5813       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5814       return FALSE;
5815     }
5816
5817   /* We pass the event to the search_entry.  If its text changes, then we start
5818    * the typeahead find capabilities. */
5819   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5820       && tree_view->priv->enable_search
5821       && !tree_view->priv->search_custom_entry_set)
5822     {
5823       GdkEvent *new_event;
5824       char *old_text;
5825       const char *new_text;
5826       gboolean retval;
5827       GdkScreen *screen;
5828       gboolean text_modified;
5829       gulong popup_menu_id;
5830
5831       gtk_tree_view_ensure_interactive_directory (tree_view);
5832
5833       /* Make a copy of the current text */
5834       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5835       new_event = gdk_event_copy ((GdkEvent *) event);
5836       g_object_unref (((GdkEventKey *) new_event)->window);
5837       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5838       gtk_widget_realize (tree_view->priv->search_window);
5839
5840       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5841                                         "popup-menu", G_CALLBACK (gtk_true),
5842                                         NULL);
5843
5844       /* Move the entry off screen */
5845       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5846       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5847                        gdk_screen_get_width (screen) + 1,
5848                        gdk_screen_get_height (screen) + 1);
5849       gtk_widget_show (tree_view->priv->search_window);
5850
5851       /* Send the event to the window.  If the preedit_changed signal is emitted
5852        * during this event, we will set priv->imcontext_changed  */
5853       tree_view->priv->imcontext_changed = FALSE;
5854       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5855       gdk_event_free (new_event);
5856       gtk_widget_hide (tree_view->priv->search_window);
5857
5858       g_signal_handler_disconnect (tree_view->priv->search_entry,
5859                                    popup_menu_id);
5860
5861       /* We check to make sure that the entry tried to handle the text, and that
5862        * the text has changed.
5863        */
5864       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5865       text_modified = strcmp (old_text, new_text) != 0;
5866       g_free (old_text);
5867       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5868           (retval && text_modified))               /* ...or the text was modified */
5869         {
5870           if (gtk_tree_view_real_start_interactive_search (tree_view,
5871                                                            gdk_event_get_device ((GdkEvent *) event),
5872                                                            FALSE))
5873             {
5874               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5875               return TRUE;
5876             }
5877           else
5878             {
5879               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5880               return FALSE;
5881             }
5882         }
5883     }
5884
5885   return FALSE;
5886 }
5887
5888 static gboolean
5889 gtk_tree_view_key_release (GtkWidget   *widget,
5890                            GdkEventKey *event)
5891 {
5892   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5893
5894   if (tree_view->priv->rubber_band_status)
5895     return TRUE;
5896
5897   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5898 }
5899
5900 /* FIXME Is this function necessary? Can I get an enter_notify event
5901  * w/o either an expose event or a mouse motion event?
5902  */
5903 static gboolean
5904 gtk_tree_view_enter_notify (GtkWidget        *widget,
5905                             GdkEventCrossing *event)
5906 {
5907   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5908   GtkRBTree *tree;
5909   GtkRBNode *node;
5910   gint new_y;
5911
5912   /* Sanity check it */
5913   if (event->window != tree_view->priv->bin_window)
5914     return FALSE;
5915
5916   if (tree_view->priv->tree == NULL)
5917     return FALSE;
5918
5919   if (event->mode == GDK_CROSSING_GRAB ||
5920       event->mode == GDK_CROSSING_GTK_GRAB ||
5921       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5922       event->mode == GDK_CROSSING_STATE_CHANGED)
5923     return TRUE;
5924
5925   /* find the node internally */
5926   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5927   if (new_y < 0)
5928     new_y = 0;
5929   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5930
5931   tree_view->priv->event_last_x = event->x;
5932   tree_view->priv->event_last_y = event->y;
5933
5934   if ((tree_view->priv->button_pressed_node == NULL) ||
5935       (tree_view->priv->button_pressed_node == node))
5936     prelight_or_select (tree_view, tree, node, event->x, event->y);
5937
5938   return TRUE;
5939 }
5940
5941 static gboolean
5942 gtk_tree_view_leave_notify (GtkWidget        *widget,
5943                             GdkEventCrossing *event)
5944 {
5945   GtkTreeView *tree_view;
5946
5947   if (event->mode == GDK_CROSSING_GRAB ||
5948       event->mode == GDK_CROSSING_GTK_GRAB ||
5949       event->mode == GDK_CROSSING_GTK_UNGRAB)
5950     return TRUE;
5951
5952   tree_view = GTK_TREE_VIEW (widget);
5953
5954   if (tree_view->priv->prelight_node)
5955     _gtk_tree_view_queue_draw_node (tree_view,
5956                                    tree_view->priv->prelight_tree,
5957                                    tree_view->priv->prelight_node,
5958                                    NULL);
5959
5960   tree_view->priv->event_last_x = -10000;
5961   tree_view->priv->event_last_y = -10000;
5962
5963   prelight_or_select (tree_view,
5964                       NULL, NULL,
5965                       -1000, -1000); /* coords not possibly over an arrow */
5966
5967   return TRUE;
5968 }
5969
5970
5971 static gint
5972 gtk_tree_view_focus_out (GtkWidget     *widget,
5973                          GdkEventFocus *event)
5974 {
5975   GtkTreeView *tree_view;
5976
5977   tree_view = GTK_TREE_VIEW (widget);
5978
5979   gtk_widget_queue_draw (widget);
5980
5981   /* destroy interactive search dialog */
5982   if (tree_view->priv->search_window)
5983     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5984                                       gdk_event_get_device ((GdkEvent *) event));
5985
5986   return FALSE;
5987 }
5988
5989
5990 /* Incremental Reflow
5991  */
5992
5993 static void
5994 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5995                                  GtkRBTree   *tree,
5996                                  GtkRBNode   *node)
5997 {
5998   GtkAllocation allocation;
5999   gint y;
6000
6001   y = _gtk_rbtree_node_find_offset (tree, node)
6002     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
6003     + gtk_tree_view_get_effective_header_height (tree_view);
6004
6005   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6006   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
6007                               0, y,
6008                               allocation.width,
6009                               GTK_RBNODE_GET_HEIGHT (node));
6010 }
6011
6012 static gboolean
6013 node_is_visible (GtkTreeView *tree_view,
6014                  GtkRBTree   *tree,
6015                  GtkRBNode   *node)
6016 {
6017   int y;
6018   int height;
6019
6020   y = _gtk_rbtree_node_find_offset (tree, node);
6021   height = gtk_tree_view_get_row_height (tree_view, node);
6022
6023   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6024       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6025                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6026     return TRUE;
6027
6028   return FALSE;
6029 }
6030
6031 /* Returns TRUE if it updated the size
6032  */
6033 static gboolean
6034 validate_row (GtkTreeView *tree_view,
6035               GtkRBTree   *tree,
6036               GtkRBNode   *node,
6037               GtkTreeIter *iter,
6038               GtkTreePath *path)
6039 {
6040   GtkTreeViewColumn *column;
6041   GList *list, *first_column, *last_column;
6042   gint height = 0;
6043   gint horizontal_separator;
6044   gint vertical_separator;
6045   gint depth = gtk_tree_path_get_depth (path);
6046   gboolean retval = FALSE;
6047   gboolean is_separator = FALSE;
6048   gboolean draw_vgrid_lines, draw_hgrid_lines;
6049   gint focus_pad;
6050   gint grid_line_width;
6051   gboolean wide_separators;
6052   gint separator_height;
6053   gint expander_size;
6054
6055   /* double check the row needs validating */
6056   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6057       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6058     return FALSE;
6059
6060   is_separator = row_is_separator (tree_view, iter, NULL);
6061
6062   gtk_widget_style_get (GTK_WIDGET (tree_view),
6063                         "focus-padding", &focus_pad,
6064                         "horizontal-separator", &horizontal_separator,
6065                         "vertical-separator", &vertical_separator,
6066                         "grid-line-width", &grid_line_width,
6067                         "wide-separators",  &wide_separators,
6068                         "separator-height", &separator_height,
6069                         NULL);
6070
6071   draw_vgrid_lines =
6072     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6073     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6074   draw_hgrid_lines =
6075     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6076     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6077   expander_size = gtk_tree_view_get_expander_size (tree_view);
6078
6079   for (last_column = g_list_last (tree_view->priv->columns);
6080        last_column &&
6081        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6082        last_column = last_column->prev)
6083     ;
6084
6085   for (first_column = g_list_first (tree_view->priv->columns);
6086        first_column &&
6087        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6088        first_column = first_column->next)
6089     ;
6090
6091   for (list = tree_view->priv->columns; list; list = list->next)
6092     {
6093       gint padding = 0;
6094       gint original_width;
6095       gint new_width;
6096       gint row_height;
6097
6098       column = list->data;
6099
6100       if (!gtk_tree_view_column_get_visible (column))
6101         continue;
6102
6103       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6104           !_gtk_tree_view_column_cell_get_dirty (column))
6105         continue;
6106
6107       original_width = _gtk_tree_view_column_get_requested_width (column);
6108
6109       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6110                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6111                                                node->children?TRUE:FALSE);
6112       gtk_tree_view_column_cell_get_size (column,
6113                                           NULL, NULL, NULL,
6114                                           NULL, &row_height);
6115
6116       if (!is_separator)
6117         {
6118           row_height += vertical_separator;
6119           height = MAX (height, row_height);
6120           height = MAX (height, expander_size);
6121         }
6122       else
6123         {
6124           if (wide_separators)
6125             height = separator_height + 2 * focus_pad;
6126           else
6127             height = 2 + 2 * focus_pad;
6128         }
6129
6130       if (gtk_tree_view_is_expander_column (tree_view, column))
6131         {
6132           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6133
6134           if (gtk_tree_view_draw_expanders (tree_view))
6135             padding += depth * expander_size;
6136         }
6137       else
6138         padding += horizontal_separator;
6139
6140       if (draw_vgrid_lines)
6141         {
6142           if (list->data == first_column || list->data == last_column)
6143             padding += grid_line_width / 2.0;
6144           else
6145             padding += grid_line_width;
6146         }
6147
6148       /* Update the padding for the column */
6149       _gtk_tree_view_column_push_padding (column, padding);
6150       new_width = _gtk_tree_view_column_get_requested_width (column);
6151
6152       if (new_width > original_width)
6153         retval = TRUE;
6154     }
6155
6156   if (draw_hgrid_lines)
6157     height += grid_line_width;
6158
6159   if (height != GTK_RBNODE_GET_HEIGHT (node))
6160     {
6161       retval = TRUE;
6162       _gtk_rbtree_node_set_height (tree, node, height);
6163     }
6164   _gtk_rbtree_node_mark_valid (tree, node);
6165   tree_view->priv->post_validation_flag = TRUE;
6166
6167   return retval;
6168 }
6169
6170
6171 static void
6172 validate_visible_area (GtkTreeView *tree_view)
6173 {
6174   GtkAllocation allocation;
6175   GtkTreePath *path = NULL;
6176   GtkTreePath *above_path = NULL;
6177   GtkTreeIter iter;
6178   GtkRBTree *tree = NULL;
6179   GtkRBNode *node = NULL;
6180   gboolean need_redraw = FALSE;
6181   gboolean size_changed = FALSE;
6182   gint total_height;
6183   gint area_above = 0;
6184   gint area_below = 0;
6185
6186   if (tree_view->priv->tree == NULL)
6187     return;
6188
6189   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6190       tree_view->priv->scroll_to_path == NULL)
6191     return;
6192
6193   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6194   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6195
6196   if (total_height == 0)
6197     return;
6198
6199   /* First, we check to see if we need to scroll anywhere
6200    */
6201   if (tree_view->priv->scroll_to_path)
6202     {
6203       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6204       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6205         {
6206           /* we are going to scroll, and will update dy */
6207           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6208           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6209               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6210             {
6211               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6212               if (validate_row (tree_view, tree, node, &iter, path))
6213                 size_changed = TRUE;
6214             }
6215
6216           if (tree_view->priv->scroll_to_use_align)
6217             {
6218               gint height = gtk_tree_view_get_row_height (tree_view, node);
6219               area_above = (total_height - height) *
6220                 tree_view->priv->scroll_to_row_align;
6221               area_below = total_height - area_above - height;
6222               area_above = MAX (area_above, 0);
6223               area_below = MAX (area_below, 0);
6224             }
6225           else
6226             {
6227               /* two cases:
6228                * 1) row not visible
6229                * 2) row visible
6230                */
6231               gint dy;
6232               gint height = gtk_tree_view_get_row_height (tree_view, node);
6233
6234               dy = _gtk_rbtree_node_find_offset (tree, node);
6235
6236               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6237                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6238                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6239                 {
6240                   /* row visible: keep the row at the same position */
6241                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6242                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6243                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6244                                - dy - height;
6245                 }
6246               else
6247                 {
6248                   /* row not visible */
6249                   if (dy >= 0
6250                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6251                     {
6252                       /* row at the beginning -- fixed */
6253                       area_above = dy;
6254                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6255                                    - area_above - height;
6256                     }
6257                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6258                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6259                     {
6260                       /* row at the end -- fixed */
6261                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6262                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6263                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6264                                    area_above - height;
6265
6266                       if (area_below < 0)
6267                         {
6268                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6269                           area_below = 0;
6270                         }
6271                     }
6272                   else
6273                     {
6274                       /* row somewhere in the middle, bring it to the top
6275                        * of the view
6276                        */
6277                       area_above = 0;
6278                       area_below = total_height - height;
6279                     }
6280                 }
6281             }
6282         }
6283       else
6284         /* the scroll to isn't valid; ignore it.
6285          */
6286         {
6287           if (tree_view->priv->scroll_to_path && !path)
6288             {
6289               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6290               tree_view->priv->scroll_to_path = NULL;
6291             }
6292           if (path)
6293             gtk_tree_path_free (path);
6294           path = NULL;
6295         }
6296     }
6297
6298   /* We didn't have a scroll_to set, so we just handle things normally
6299    */
6300   if (path == NULL)
6301     {
6302       gint offset;
6303
6304       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6305                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6306                                         &tree, &node);
6307       if (node == NULL)
6308         {
6309           /* In this case, nothing has been validated */
6310           path = gtk_tree_path_new_first ();
6311           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6312         }
6313       else
6314         {
6315           path = _gtk_tree_path_new_from_rbtree (tree, node);
6316           total_height += offset;
6317         }
6318
6319       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6320
6321       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6322           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6323         {
6324           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6325           if (validate_row (tree_view, tree, node, &iter, path))
6326             size_changed = TRUE;
6327         }
6328       area_above = 0;
6329       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6330     }
6331
6332   above_path = gtk_tree_path_copy (path);
6333
6334   /* if we do not validate any row above the new top_row, we will make sure
6335    * that the row immediately above top_row has been validated. (if we do not
6336    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6337    * when invalidated that row's height will be zero. and this will mess up
6338    * scrolling).
6339    */
6340   if (area_above == 0)
6341     {
6342       GtkRBTree *tmptree;
6343       GtkRBNode *tmpnode;
6344
6345       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6346       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6347
6348       if (tmpnode)
6349         {
6350           GtkTreePath *tmppath;
6351           GtkTreeIter tmpiter;
6352
6353           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6354           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6355
6356           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6357               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6358             {
6359               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6360               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6361                 size_changed = TRUE;
6362             }
6363
6364           gtk_tree_path_free (tmppath);
6365         }
6366     }
6367
6368   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6369    * backwards is much slower then forward, as there is no iter_prev function.
6370    * We go forwards first in case we run out of tree.  Then we go backwards to
6371    * fill out the top.
6372    */
6373   while (node && area_below > 0)
6374     {
6375       if (node->children)
6376         {
6377           GtkTreeIter parent = iter;
6378           gboolean has_child;
6379
6380           tree = node->children;
6381           node = _gtk_rbtree_first (tree);
6382
6383           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6384                                                     &iter,
6385                                                     &parent);
6386           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6387           gtk_tree_path_down (path);
6388         }
6389       else
6390         {
6391           gboolean done = FALSE;
6392           do
6393             {
6394               node = _gtk_rbtree_next (tree, node);
6395               if (node != NULL)
6396                 {
6397                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6398                   done = TRUE;
6399                   gtk_tree_path_next (path);
6400
6401                   /* Sanity Check! */
6402                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6403                 }
6404               else
6405                 {
6406                   GtkTreeIter parent_iter = iter;
6407                   gboolean has_parent;
6408
6409                   node = tree->parent_node;
6410                   tree = tree->parent_tree;
6411                   if (tree == NULL)
6412                     break;
6413                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6414                                                            &iter,
6415                                                            &parent_iter);
6416                   gtk_tree_path_up (path);
6417
6418                   /* Sanity check */
6419                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6420                 }
6421             }
6422           while (!done);
6423         }
6424
6425       if (!node)
6426         break;
6427
6428       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6429           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6430         {
6431           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6432           if (validate_row (tree_view, tree, node, &iter, path))
6433               size_changed = TRUE;
6434         }
6435
6436       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6437     }
6438   gtk_tree_path_free (path);
6439
6440   /* If we ran out of tree, and have extra area_below left, we need to add it
6441    * to area_above */
6442   if (area_below > 0)
6443     area_above += area_below;
6444
6445   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6446
6447   /* We walk backwards */
6448   while (area_above > 0)
6449     {
6450       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6451
6452       /* Always find the new path in the tree.  We cannot just assume
6453        * a gtk_tree_path_prev() is enough here, as there might be children
6454        * in between this node and the previous sibling node.  If this
6455        * appears to be a performance hotspot in profiles, we can look into
6456        * intrigate logic for keeping path, node and iter in sync like
6457        * we do for forward walks.  (Which will be hard because of the lacking
6458        * iter_prev).
6459        */
6460
6461       if (node == NULL)
6462         break;
6463
6464       gtk_tree_path_free (above_path);
6465       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6466
6467       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6468
6469       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6470           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6471         {
6472           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6473           if (validate_row (tree_view, tree, node, &iter, above_path))
6474             size_changed = TRUE;
6475         }
6476       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6477     }
6478
6479   /* if we scrolled to a path, we need to set the dy here,
6480    * and sync the top row accordingly
6481    */
6482   if (tree_view->priv->scroll_to_path)
6483     {
6484       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6485       gtk_tree_view_top_row_to_dy (tree_view);
6486
6487       need_redraw = TRUE;
6488     }
6489   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6490     {
6491       /* when we are not scrolling, we should never set dy to something
6492        * else than zero. we update top_row to be in sync with dy = 0.
6493        */
6494       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6495       gtk_tree_view_dy_to_top_row (tree_view);
6496     }
6497   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6498     {
6499       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6500       gtk_tree_view_dy_to_top_row (tree_view);
6501     }
6502   else
6503     gtk_tree_view_top_row_to_dy (tree_view);
6504
6505   /* update width/height and queue a resize */
6506   if (size_changed)
6507     {
6508       GtkRequisition requisition;
6509
6510       /* We temporarily guess a size, under the assumption that it will be the
6511        * same when we get our next size_allocate.  If we don't do this, we'll be
6512        * in an inconsistent state if we call top_row_to_dy. */
6513
6514       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6515                                      &requisition, NULL);
6516       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6517                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6518       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6519                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6520       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6521     }
6522
6523   if (tree_view->priv->scroll_to_path)
6524     {
6525       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6526       tree_view->priv->scroll_to_path = NULL;
6527     }
6528
6529   if (above_path)
6530     gtk_tree_path_free (above_path);
6531
6532   if (tree_view->priv->scroll_to_column)
6533     {
6534       tree_view->priv->scroll_to_column = NULL;
6535     }
6536   if (need_redraw)
6537     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6538 }
6539
6540 static void
6541 initialize_fixed_height_mode (GtkTreeView *tree_view)
6542 {
6543   if (!tree_view->priv->tree)
6544     return;
6545
6546   if (tree_view->priv->fixed_height < 0)
6547     {
6548       GtkTreeIter iter;
6549       GtkTreePath *path;
6550
6551       GtkRBTree *tree = NULL;
6552       GtkRBNode *node = NULL;
6553
6554       tree = tree_view->priv->tree;
6555       node = tree->root;
6556
6557       path = _gtk_tree_path_new_from_rbtree (tree, node);
6558       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6559
6560       validate_row (tree_view, tree, node, &iter, path);
6561
6562       gtk_tree_path_free (path);
6563
6564       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6565     }
6566
6567    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6568                                  tree_view->priv->fixed_height, TRUE);
6569 }
6570
6571 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6572  * the left-most uninvalidated node.  We then try walking right, validating
6573  * nodes.  Once we find a valid node, we repeat the previous process of finding
6574  * the first invalid node.
6575  */
6576
6577 static gboolean
6578 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6579 {
6580   GtkRBTree *tree = NULL;
6581   GtkRBNode *node = NULL;
6582   gboolean validated_area = FALSE;
6583   gint retval = TRUE;
6584   GtkTreePath *path = NULL;
6585   GtkTreeIter iter;
6586   GTimer *timer;
6587   gint i = 0;
6588
6589   gint y = -1;
6590   gint prev_height = -1;
6591   gboolean fixed_height = TRUE;
6592
6593   g_assert (tree_view);
6594
6595   if (tree_view->priv->tree == NULL)
6596       return FALSE;
6597
6598   if (tree_view->priv->fixed_height_mode)
6599     {
6600       if (tree_view->priv->fixed_height < 0)
6601         initialize_fixed_height_mode (tree_view);
6602
6603       return FALSE;
6604     }
6605
6606   timer = g_timer_new ();
6607   g_timer_start (timer);
6608
6609   do
6610     {
6611       gboolean changed = FALSE;
6612
6613       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6614         {
6615           retval = FALSE;
6616           goto done;
6617         }
6618
6619       if (path != NULL)
6620         {
6621           node = _gtk_rbtree_next (tree, node);
6622           if (node != NULL)
6623             {
6624               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6625               gtk_tree_path_next (path);
6626             }
6627           else
6628             {
6629               gtk_tree_path_free (path);
6630               path = NULL;
6631             }
6632         }
6633
6634       if (path == NULL)
6635         {
6636           tree = tree_view->priv->tree;
6637           node = tree_view->priv->tree->root;
6638
6639           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6640
6641           do
6642             {
6643               if (!_gtk_rbtree_is_nil (node->left) &&
6644                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6645                 {
6646                   node = node->left;
6647                 }
6648               else if (!_gtk_rbtree_is_nil (node->right) &&
6649                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6650                 {
6651                   node = node->right;
6652                 }
6653               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6654                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6655                 {
6656                   break;
6657                 }
6658               else if (node->children != NULL)
6659                 {
6660                   tree = node->children;
6661                   node = tree->root;
6662                 }
6663               else
6664                 /* RBTree corruption!  All bad */
6665                 g_assert_not_reached ();
6666             }
6667           while (TRUE);
6668           path = _gtk_tree_path_new_from_rbtree (tree, node);
6669           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6670         }
6671
6672       changed = validate_row (tree_view, tree, node, &iter, path);
6673       validated_area = changed || validated_area;
6674
6675       if (changed)
6676         {
6677           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6678
6679           if (y == -1 || y > offset)
6680             y = offset;
6681         }
6682
6683       if (!tree_view->priv->fixed_height_check)
6684         {
6685           gint height;
6686
6687           height = gtk_tree_view_get_row_height (tree_view, node);
6688           if (prev_height < 0)
6689             prev_height = height;
6690           else if (prev_height != height)
6691             fixed_height = FALSE;
6692         }
6693
6694       i++;
6695     }
6696   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6697
6698   if (!tree_view->priv->fixed_height_check)
6699    {
6700      if (fixed_height)
6701        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6702
6703      tree_view->priv->fixed_height_check = 1;
6704    }
6705
6706  done:
6707   if (validated_area)
6708     {
6709       GtkRequisition requisition;
6710
6711       /* We temporarily guess a size, under the assumption that it will be the
6712        * same when we get our next size_allocate.  If we don't do this, we'll be
6713        * in an inconsistent state when we call top_row_to_dy. */
6714
6715       /* FIXME: This is called from size_request, for some reason it is not infinitely
6716        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6717        * not allowed (from inside ->get_preferred_width/height() implementations, one
6718        * should call the vfuncs directly). However what is desired here is the full
6719        * size including any margins and limited by any alignment (i.e. after
6720        * GtkWidget:adjust_size_request() is called).
6721        *
6722        * Currently bypassing this but the real solution is to not update the scroll adjustments
6723        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6724        */
6725       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6726
6727       /* If rows above the current position have changed height, this has
6728        * affected the current view and thus needs a redraw.
6729        */
6730       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6731         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6732
6733       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6734                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6735       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6736                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6737
6738       if (queue_resize)
6739         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6740     }
6741
6742   if (path) gtk_tree_path_free (path);
6743   g_timer_destroy (timer);
6744
6745   return retval;
6746 }
6747
6748 static gboolean
6749 validate_rows (GtkTreeView *tree_view)
6750 {
6751   gboolean retval;
6752
6753   retval = do_validate_rows (tree_view, TRUE);
6754
6755   if (! retval && tree_view->priv->validate_rows_timer)
6756     {
6757       g_source_remove (tree_view->priv->validate_rows_timer);
6758       tree_view->priv->validate_rows_timer = 0;
6759     }
6760
6761   return retval;
6762 }
6763
6764 static gboolean
6765 validate_rows_handler (GtkTreeView *tree_view)
6766 {
6767   gboolean retval;
6768
6769   retval = do_validate_rows (tree_view, TRUE);
6770   if (! retval && tree_view->priv->validate_rows_timer)
6771     {
6772       g_source_remove (tree_view->priv->validate_rows_timer);
6773       tree_view->priv->validate_rows_timer = 0;
6774     }
6775
6776   return retval;
6777 }
6778
6779 static gboolean
6780 do_presize_handler (GtkTreeView *tree_view)
6781 {
6782   if (tree_view->priv->mark_rows_col_dirty)
6783     {
6784       if (tree_view->priv->tree)
6785         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6786       tree_view->priv->mark_rows_col_dirty = FALSE;
6787     }
6788   validate_visible_area (tree_view);
6789   tree_view->priv->presize_handler_timer = 0;
6790
6791   if (tree_view->priv->fixed_height_mode)
6792     {
6793       GtkRequisition requisition;
6794
6795       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6796                                      &requisition, NULL);
6797
6798       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6799                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6800       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6801                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6802       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6803     }
6804
6805   return FALSE;
6806 }
6807
6808 static gboolean
6809 presize_handler_callback (gpointer data)
6810 {
6811   do_presize_handler (GTK_TREE_VIEW (data));
6812
6813   return FALSE;
6814 }
6815
6816 static void
6817 install_presize_handler (GtkTreeView *tree_view)
6818 {
6819   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6820     return;
6821
6822   if (! tree_view->priv->presize_handler_timer)
6823     {
6824       tree_view->priv->presize_handler_timer =
6825         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6826     }
6827   if (! tree_view->priv->validate_rows_timer)
6828     {
6829       tree_view->priv->validate_rows_timer =
6830         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6831     }
6832 }
6833
6834 static gboolean
6835 scroll_sync_handler (GtkTreeView *tree_view)
6836 {
6837   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6838     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6839   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6840     gtk_tree_view_top_row_to_dy (tree_view);
6841   else
6842     gtk_tree_view_dy_to_top_row (tree_view);
6843
6844   tree_view->priv->scroll_sync_timer = 0;
6845
6846   return FALSE;
6847 }
6848
6849 static void
6850 install_scroll_sync_handler (GtkTreeView *tree_view)
6851 {
6852   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6853     return;
6854
6855   if (!tree_view->priv->scroll_sync_timer)
6856     {
6857       tree_view->priv->scroll_sync_timer =
6858         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6859     }
6860 }
6861
6862 static void
6863 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6864                            GtkTreePath *path,
6865                            gint         offset)
6866 {
6867   gtk_tree_row_reference_free (tree_view->priv->top_row);
6868
6869   if (!path)
6870     {
6871       tree_view->priv->top_row = NULL;
6872       tree_view->priv->top_row_dy = 0;
6873     }
6874   else
6875     {
6876       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6877       tree_view->priv->top_row_dy = offset;
6878     }
6879 }
6880
6881 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6882  * it's set to be NULL, and top_row_dy is 0;
6883  */
6884 static void
6885 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6886 {
6887   gint offset;
6888   GtkTreePath *path;
6889   GtkRBTree *tree;
6890   GtkRBNode *node;
6891
6892   if (tree_view->priv->tree == NULL)
6893     {
6894       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6895     }
6896   else
6897     {
6898       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6899                                         tree_view->priv->dy,
6900                                         &tree, &node);
6901
6902       if (tree == NULL)
6903         {
6904           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6905         }
6906       else
6907         {
6908           path = _gtk_tree_path_new_from_rbtree (tree, node);
6909           gtk_tree_view_set_top_row (tree_view, path, offset);
6910           gtk_tree_path_free (path);
6911         }
6912     }
6913 }
6914
6915 static void
6916 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6917 {
6918   GtkTreePath *path;
6919   GtkRBTree *tree;
6920   GtkRBNode *node;
6921   int new_dy;
6922
6923   /* Avoid recursive calls */
6924   if (tree_view->priv->in_top_row_to_dy)
6925     return;
6926
6927   if (tree_view->priv->top_row)
6928     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6929   else
6930     path = NULL;
6931
6932   if (!path)
6933     tree = NULL;
6934   else
6935     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6936
6937   if (path)
6938     gtk_tree_path_free (path);
6939
6940   if (tree == NULL)
6941     {
6942       /* keep dy and set new toprow */
6943       gtk_tree_row_reference_free (tree_view->priv->top_row);
6944       tree_view->priv->top_row = NULL;
6945       tree_view->priv->top_row_dy = 0;
6946       /* DO NOT install the idle handler */
6947       gtk_tree_view_dy_to_top_row (tree_view);
6948       return;
6949     }
6950
6951   if (gtk_tree_view_get_row_height (tree_view, node)
6952       < tree_view->priv->top_row_dy)
6953     {
6954       /* new top row -- do NOT install the idle handler */
6955       gtk_tree_view_dy_to_top_row (tree_view);
6956       return;
6957     }
6958
6959   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6960   new_dy += tree_view->priv->top_row_dy;
6961
6962   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6963     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6964
6965   new_dy = MAX (0, new_dy);
6966
6967   tree_view->priv->in_top_row_to_dy = TRUE;
6968   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6969   tree_view->priv->in_top_row_to_dy = FALSE;
6970 }
6971
6972
6973 void
6974 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6975                                             gboolean     install_handler)
6976 {
6977   tree_view->priv->mark_rows_col_dirty = TRUE;
6978
6979   if (install_handler)
6980     install_presize_handler (tree_view);
6981 }
6982
6983 /*
6984  * This function works synchronously (due to the while (validate_rows...)
6985  * loop).
6986  *
6987  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6988  * here. You now need to check that yourself.
6989  */
6990 void
6991 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6992                                 GtkTreeViewColumn *column)
6993 {
6994   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6995   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6996
6997   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6998
6999   do_presize_handler (tree_view);
7000   while (validate_rows (tree_view));
7001
7002   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7003 }
7004
7005 /* Drag-and-drop */
7006
7007 static void
7008 set_source_row (GdkDragContext *context,
7009                 GtkTreeModel   *model,
7010                 GtkTreePath    *source_row)
7011 {
7012   g_object_set_data_full (G_OBJECT (context),
7013                           I_("gtk-tree-view-source-row"),
7014                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7015                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7016 }
7017
7018 static GtkTreePath*
7019 get_source_row (GdkDragContext *context)
7020 {
7021   GtkTreeRowReference *ref =
7022     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7023
7024   if (ref)
7025     return gtk_tree_row_reference_get_path (ref);
7026   else
7027     return NULL;
7028 }
7029
7030 typedef struct
7031 {
7032   GtkTreeRowReference *dest_row;
7033   guint                path_down_mode   : 1;
7034   guint                empty_view_drop  : 1;
7035   guint                drop_append_mode : 1;
7036 }
7037 DestRow;
7038
7039 static void
7040 dest_row_free (gpointer data)
7041 {
7042   DestRow *dr = (DestRow *)data;
7043
7044   gtk_tree_row_reference_free (dr->dest_row);
7045   g_slice_free (DestRow, dr);
7046 }
7047
7048 static void
7049 set_dest_row (GdkDragContext *context,
7050               GtkTreeModel   *model,
7051               GtkTreePath    *dest_row,
7052               gboolean        path_down_mode,
7053               gboolean        empty_view_drop,
7054               gboolean        drop_append_mode)
7055 {
7056   DestRow *dr;
7057
7058   if (!dest_row)
7059     {
7060       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7061                               NULL, NULL);
7062       return;
7063     }
7064
7065   dr = g_slice_new (DestRow);
7066
7067   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7068   dr->path_down_mode = path_down_mode != FALSE;
7069   dr->empty_view_drop = empty_view_drop != FALSE;
7070   dr->drop_append_mode = drop_append_mode != FALSE;
7071
7072   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7073                           dr, (GDestroyNotify) dest_row_free);
7074 }
7075
7076 static GtkTreePath*
7077 get_dest_row (GdkDragContext *context,
7078               gboolean       *path_down_mode)
7079 {
7080   DestRow *dr =
7081     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7082
7083   if (dr)
7084     {
7085       GtkTreePath *path = NULL;
7086
7087       if (path_down_mode)
7088         *path_down_mode = dr->path_down_mode;
7089
7090       if (dr->dest_row)
7091         path = gtk_tree_row_reference_get_path (dr->dest_row);
7092       else if (dr->empty_view_drop)
7093         path = gtk_tree_path_new_from_indices (0, -1);
7094       else
7095         path = NULL;
7096
7097       if (path && dr->drop_append_mode)
7098         gtk_tree_path_next (path);
7099
7100       return path;
7101     }
7102   else
7103     return NULL;
7104 }
7105
7106 /* Get/set whether drag_motion requested the drag data and
7107  * drag_data_received should thus not actually insert the data,
7108  * since the data doesn't result from a drop.
7109  */
7110 static void
7111 set_status_pending (GdkDragContext *context,
7112                     GdkDragAction   suggested_action)
7113 {
7114   g_object_set_data (G_OBJECT (context),
7115                      I_("gtk-tree-view-status-pending"),
7116                      GINT_TO_POINTER (suggested_action));
7117 }
7118
7119 static GdkDragAction
7120 get_status_pending (GdkDragContext *context)
7121 {
7122   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7123                                              "gtk-tree-view-status-pending"));
7124 }
7125
7126 static TreeViewDragInfo*
7127 get_info (GtkTreeView *tree_view)
7128 {
7129   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7130 }
7131
7132 static void
7133 destroy_info (TreeViewDragInfo *di)
7134 {
7135   g_slice_free (TreeViewDragInfo, di);
7136 }
7137
7138 static TreeViewDragInfo*
7139 ensure_info (GtkTreeView *tree_view)
7140 {
7141   TreeViewDragInfo *di;
7142
7143   di = get_info (tree_view);
7144
7145   if (di == NULL)
7146     {
7147       di = g_slice_new0 (TreeViewDragInfo);
7148
7149       g_object_set_data_full (G_OBJECT (tree_view),
7150                               I_("gtk-tree-view-drag-info"),
7151                               di,
7152                               (GDestroyNotify) destroy_info);
7153     }
7154
7155   return di;
7156 }
7157
7158 static void
7159 remove_info (GtkTreeView *tree_view)
7160 {
7161   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7162 }
7163
7164 #if 0
7165 static gint
7166 drag_scan_timeout (gpointer data)
7167 {
7168   GtkTreeView *tree_view;
7169   gint x, y;
7170   GdkModifierType state;
7171   GtkTreePath *path = NULL;
7172   GtkTreeViewColumn *column = NULL;
7173   GdkRectangle visible_rect;
7174
7175   gdk_threads_enter ();
7176
7177   tree_view = GTK_TREE_VIEW (data);
7178
7179   gdk_window_get_device_position (tree_view->priv->bin_window,
7180                                   gdk_device_manager_get_client_pointer (
7181                                     gdk_display_get_device_manager (
7182                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7183                                   &x, &y, &state);
7184
7185   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7186
7187   /* See if we are near the edge. */
7188   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7189       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7190       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7191       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7192     {
7193       gtk_tree_view_get_path_at_pos (tree_view,
7194                                      tree_view->priv->bin_window,
7195                                      x, y,
7196                                      &path,
7197                                      &column,
7198                                      NULL,
7199                                      NULL);
7200
7201       if (path != NULL)
7202         {
7203           gtk_tree_view_scroll_to_cell (tree_view,
7204                                         path,
7205                                         column,
7206                                         TRUE,
7207                                         0.5, 0.5);
7208
7209           gtk_tree_path_free (path);
7210         }
7211     }
7212
7213   gdk_threads_leave ();
7214
7215   return TRUE;
7216 }
7217 #endif /* 0 */
7218
7219 static void
7220 add_scroll_timeout (GtkTreeView *tree_view)
7221 {
7222   if (tree_view->priv->scroll_timeout == 0)
7223     {
7224       tree_view->priv->scroll_timeout =
7225         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7226     }
7227 }
7228
7229 static void
7230 remove_scroll_timeout (GtkTreeView *tree_view)
7231 {
7232   if (tree_view->priv->scroll_timeout != 0)
7233     {
7234       g_source_remove (tree_view->priv->scroll_timeout);
7235       tree_view->priv->scroll_timeout = 0;
7236     }
7237 }
7238
7239 static gboolean
7240 check_model_dnd (GtkTreeModel *model,
7241                  GType         required_iface,
7242                  const gchar  *signal)
7243 {
7244   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7245     {
7246       g_warning ("You must override the default '%s' handler "
7247                  "on GtkTreeView when using models that don't support "
7248                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7249                  "is to connect to '%s' and call "
7250                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7251                  "the default handler from running. Look at the source code "
7252                  "for the default handler in gtktreeview.c to get an idea what "
7253                  "your handler should do. (gtktreeview.c is in the GTK source "
7254                  "code.) If you're using GTK from a language other than C, "
7255                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7256                  signal, g_type_name (required_iface), signal);
7257       return FALSE;
7258     }
7259   else
7260     return TRUE;
7261 }
7262
7263 static void
7264 remove_open_timeout (GtkTreeView *tree_view)
7265 {
7266   if (tree_view->priv->open_dest_timeout != 0)
7267     {
7268       g_source_remove (tree_view->priv->open_dest_timeout);
7269       tree_view->priv->open_dest_timeout = 0;
7270     }
7271 }
7272
7273
7274 static gint
7275 open_row_timeout (gpointer data)
7276 {
7277   GtkTreeView *tree_view = data;
7278   GtkTreePath *dest_path = NULL;
7279   GtkTreeViewDropPosition pos;
7280   gboolean result = FALSE;
7281
7282   gtk_tree_view_get_drag_dest_row (tree_view,
7283                                    &dest_path,
7284                                    &pos);
7285
7286   if (dest_path &&
7287       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7288        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7289     {
7290       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7291       tree_view->priv->open_dest_timeout = 0;
7292
7293       gtk_tree_path_free (dest_path);
7294     }
7295   else
7296     {
7297       if (dest_path)
7298         gtk_tree_path_free (dest_path);
7299
7300       result = TRUE;
7301     }
7302
7303   return result;
7304 }
7305
7306 static gboolean
7307 scroll_row_timeout (gpointer data)
7308 {
7309   GtkTreeView *tree_view = data;
7310
7311   gtk_tree_view_vertical_autoscroll (tree_view);
7312
7313   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7314     gtk_tree_view_update_rubber_band (tree_view);
7315
7316   return TRUE;
7317 }
7318
7319 /* Returns TRUE if event should not be propagated to parent widgets */
7320 static gboolean
7321 set_destination_row (GtkTreeView    *tree_view,
7322                      GdkDragContext *context,
7323                      /* coordinates relative to the widget */
7324                      gint            x,
7325                      gint            y,
7326                      GdkDragAction  *suggested_action,
7327                      GdkAtom        *target)
7328 {
7329   GtkTreePath *path = NULL;
7330   GtkTreeViewDropPosition pos;
7331   GtkTreeViewDropPosition old_pos;
7332   TreeViewDragInfo *di;
7333   GtkWidget *widget;
7334   GtkTreePath *old_dest_path = NULL;
7335   gboolean can_drop = FALSE;
7336
7337   *suggested_action = 0;
7338   *target = GDK_NONE;
7339
7340   widget = GTK_WIDGET (tree_view);
7341
7342   di = get_info (tree_view);
7343
7344   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7345     {
7346       /* someone unset us as a drag dest, note that if
7347        * we return FALSE drag_leave isn't called
7348        */
7349
7350       gtk_tree_view_set_drag_dest_row (tree_view,
7351                                        NULL,
7352                                        GTK_TREE_VIEW_DROP_BEFORE);
7353
7354       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7355       remove_open_timeout (GTK_TREE_VIEW (widget));
7356
7357       return FALSE; /* no longer a drop site */
7358     }
7359
7360   *target = gtk_drag_dest_find_target (widget, context,
7361                                        gtk_drag_dest_get_target_list (widget));
7362   if (*target == GDK_NONE)
7363     {
7364       return FALSE;
7365     }
7366
7367   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7368                                           x, y,
7369                                           &path,
7370                                           &pos))
7371     {
7372       gint n_children;
7373       GtkTreeModel *model;
7374
7375       remove_open_timeout (tree_view);
7376
7377       /* the row got dropped on empty space, let's setup a special case
7378        */
7379
7380       if (path)
7381         gtk_tree_path_free (path);
7382
7383       model = gtk_tree_view_get_model (tree_view);
7384
7385       n_children = gtk_tree_model_iter_n_children (model, NULL);
7386       if (n_children)
7387         {
7388           pos = GTK_TREE_VIEW_DROP_AFTER;
7389           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7390         }
7391       else
7392         {
7393           pos = GTK_TREE_VIEW_DROP_BEFORE;
7394           path = gtk_tree_path_new_from_indices (0, -1);
7395         }
7396
7397       can_drop = TRUE;
7398
7399       goto out;
7400     }
7401
7402   g_assert (path);
7403
7404   /* If we left the current row's "open" zone, unset the timeout for
7405    * opening the row
7406    */
7407   gtk_tree_view_get_drag_dest_row (tree_view,
7408                                    &old_dest_path,
7409                                    &old_pos);
7410
7411   if (old_dest_path &&
7412       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7413        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7414          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7415     remove_open_timeout (tree_view);
7416
7417   if (old_dest_path)
7418     gtk_tree_path_free (old_dest_path);
7419
7420   if (TRUE /* FIXME if the location droppable predicate */)
7421     {
7422       can_drop = TRUE;
7423     }
7424
7425 out:
7426   if (can_drop)
7427     {
7428       GtkWidget *source_widget;
7429
7430       *suggested_action = gdk_drag_context_get_suggested_action (context);
7431       source_widget = gtk_drag_get_source_widget (context);
7432
7433       if (source_widget == widget)
7434         {
7435           /* Default to MOVE, unless the user has
7436            * pressed ctrl or shift to affect available actions
7437            */
7438           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7439             *suggested_action = GDK_ACTION_MOVE;
7440         }
7441
7442       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7443                                        path, pos);
7444     }
7445   else
7446     {
7447       /* can't drop here */
7448       remove_open_timeout (tree_view);
7449
7450       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7451                                        NULL,
7452                                        GTK_TREE_VIEW_DROP_BEFORE);
7453     }
7454
7455   if (path)
7456     gtk_tree_path_free (path);
7457
7458   return TRUE;
7459 }
7460
7461 static GtkTreePath*
7462 get_logical_dest_row (GtkTreeView *tree_view,
7463                       gboolean    *path_down_mode,
7464                       gboolean    *drop_append_mode)
7465 {
7466   /* adjust path to point to the row the drop goes in front of */
7467   GtkTreePath *path = NULL;
7468   GtkTreeViewDropPosition pos;
7469
7470   g_return_val_if_fail (path_down_mode != NULL, NULL);
7471   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7472
7473   *path_down_mode = FALSE;
7474   *drop_append_mode = 0;
7475
7476   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7477
7478   if (path == NULL)
7479     return NULL;
7480
7481   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7482     ; /* do nothing */
7483   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7484            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7485     *path_down_mode = TRUE;
7486   else
7487     {
7488       GtkTreeIter iter;
7489       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7490
7491       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7492
7493       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7494           !gtk_tree_model_iter_next (model, &iter))
7495         *drop_append_mode = 1;
7496       else
7497         {
7498           *drop_append_mode = 0;
7499           gtk_tree_path_next (path);
7500         }
7501     }
7502
7503   return path;
7504 }
7505
7506 static gboolean
7507 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7508                                         GdkEventMotion   *event)
7509 {
7510   GtkWidget *widget = GTK_WIDGET (tree_view);
7511   GdkDragContext *context;
7512   TreeViewDragInfo *di;
7513   GtkTreePath *path = NULL;
7514   gint button;
7515   gint cell_x, cell_y;
7516   GtkTreeModel *model;
7517   gboolean retval = FALSE;
7518
7519   di = get_info (tree_view);
7520
7521   if (di == NULL || !di->source_set)
7522     goto out;
7523
7524   if (tree_view->priv->pressed_button < 0)
7525     goto out;
7526
7527   if (!gtk_drag_check_threshold (widget,
7528                                  tree_view->priv->press_start_x,
7529                                  tree_view->priv->press_start_y,
7530                                  event->x, event->y))
7531     goto out;
7532
7533   model = gtk_tree_view_get_model (tree_view);
7534
7535   if (model == NULL)
7536     goto out;
7537
7538   button = tree_view->priv->pressed_button;
7539   tree_view->priv->pressed_button = -1;
7540
7541   gtk_tree_view_get_path_at_pos (tree_view,
7542                                  tree_view->priv->press_start_x,
7543                                  tree_view->priv->press_start_y,
7544                                  &path,
7545                                  NULL,
7546                                  &cell_x,
7547                                  &cell_y);
7548
7549   if (path == NULL)
7550     goto out;
7551
7552   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7553       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7554                                            path))
7555     goto out;
7556
7557   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7558     goto out;
7559
7560   /* Now we can begin the drag */
7561
7562   retval = TRUE;
7563
7564   context = gtk_drag_begin (widget,
7565                             gtk_drag_source_get_target_list (widget),
7566                             di->source_actions,
7567                             button,
7568                             (GdkEvent*)event);
7569
7570   set_source_row (context, model, path);
7571
7572  out:
7573   if (path)
7574     gtk_tree_path_free (path);
7575
7576   return retval;
7577 }
7578
7579
7580 static void
7581 gtk_tree_view_drag_begin (GtkWidget      *widget,
7582                           GdkDragContext *context)
7583 {
7584   GtkTreeView *tree_view;
7585   GtkTreePath *path = NULL;
7586   gint cell_x, cell_y;
7587   cairo_surface_t *row_pix;
7588   TreeViewDragInfo *di;
7589
7590   tree_view = GTK_TREE_VIEW (widget);
7591
7592   /* if the user uses a custom DND source impl, we don't set the icon here */
7593   di = get_info (tree_view);
7594
7595   if (di == NULL || !di->source_set)
7596     return;
7597
7598   gtk_tree_view_get_path_at_pos (tree_view,
7599                                  tree_view->priv->press_start_x,
7600                                  tree_view->priv->press_start_y,
7601                                  &path,
7602                                  NULL,
7603                                  &cell_x,
7604                                  &cell_y);
7605
7606   /* If path is NULL, there's nothing we can drag.  For now, we silently
7607    * bail out.  Actually, dragging should not be possible from an empty
7608    * tree view, but there's no way we can cancel that from here.
7609    * Automatically unsetting the tree view as drag source for empty models
7610    * is something that would likely break other people's code ...
7611    */
7612   if (!path)
7613     return;
7614
7615   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7616                                                 path);
7617   cairo_surface_set_device_offset (row_pix,
7618                                    /* the + 1 is for the black border in the icon */
7619                                    - (tree_view->priv->press_start_x + 1),
7620                                    - (cell_y + 1));
7621
7622   gtk_drag_set_icon_surface (context, row_pix);
7623
7624   cairo_surface_destroy (row_pix);
7625   gtk_tree_path_free (path);
7626 }
7627
7628 static void
7629 gtk_tree_view_drag_end (GtkWidget      *widget,
7630                         GdkDragContext *context)
7631 {
7632   /* do nothing */
7633 }
7634
7635 /* Default signal implementations for the drag signals */
7636 static void
7637 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7638                              GdkDragContext   *context,
7639                              GtkSelectionData *selection_data,
7640                              guint             info,
7641                              guint             time)
7642 {
7643   GtkTreeView *tree_view;
7644   GtkTreeModel *model;
7645   TreeViewDragInfo *di;
7646   GtkTreePath *source_row;
7647
7648   tree_view = GTK_TREE_VIEW (widget);
7649
7650   model = gtk_tree_view_get_model (tree_view);
7651
7652   if (model == NULL)
7653     return;
7654
7655   di = get_info (GTK_TREE_VIEW (widget));
7656
7657   if (di == NULL)
7658     return;
7659
7660   source_row = get_source_row (context);
7661
7662   if (source_row == NULL)
7663     return;
7664
7665   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7666    * any model; for DragSource models there are some other targets
7667    * we also support.
7668    */
7669
7670   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7671       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7672                                           source_row,
7673                                           selection_data))
7674     goto done;
7675
7676   /* If drag_data_get does nothing, try providing row data. */
7677   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7678     {
7679       gtk_tree_set_row_drag_data (selection_data,
7680                                   model,
7681                                   source_row);
7682     }
7683
7684  done:
7685   gtk_tree_path_free (source_row);
7686 }
7687
7688
7689 static void
7690 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7691                                 GdkDragContext *context)
7692 {
7693   TreeViewDragInfo *di;
7694   GtkTreeModel *model;
7695   GtkTreeView *tree_view;
7696   GtkTreePath *source_row;
7697
7698   tree_view = GTK_TREE_VIEW (widget);
7699   model = gtk_tree_view_get_model (tree_view);
7700
7701   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7702     return;
7703
7704   di = get_info (tree_view);
7705
7706   if (di == NULL)
7707     return;
7708
7709   source_row = get_source_row (context);
7710
7711   if (source_row == NULL)
7712     return;
7713
7714   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7715                                          source_row);
7716
7717   gtk_tree_path_free (source_row);
7718
7719   set_source_row (context, NULL, NULL);
7720 }
7721
7722 static void
7723 gtk_tree_view_drag_leave (GtkWidget      *widget,
7724                           GdkDragContext *context,
7725                           guint             time)
7726 {
7727   /* unset any highlight row */
7728   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7729                                    NULL,
7730                                    GTK_TREE_VIEW_DROP_BEFORE);
7731
7732   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7733   remove_open_timeout (GTK_TREE_VIEW (widget));
7734 }
7735
7736
7737 static gboolean
7738 gtk_tree_view_drag_motion (GtkWidget        *widget,
7739                            GdkDragContext   *context,
7740                            /* coordinates relative to the widget */
7741                            gint              x,
7742                            gint              y,
7743                            guint             time)
7744 {
7745   gboolean empty;
7746   GtkTreePath *path = NULL;
7747   GtkTreeViewDropPosition pos;
7748   GtkTreeView *tree_view;
7749   GdkDragAction suggested_action = 0;
7750   GdkAtom target;
7751
7752   tree_view = GTK_TREE_VIEW (widget);
7753
7754   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7755     return FALSE;
7756
7757   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7758
7759   /* we only know this *after* set_desination_row */
7760   empty = tree_view->priv->empty_view_drop;
7761
7762   if (path == NULL && !empty)
7763     {
7764       /* Can't drop here. */
7765       gdk_drag_status (context, 0, time);
7766     }
7767   else
7768     {
7769       if (tree_view->priv->open_dest_timeout == 0 &&
7770           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7771            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7772         {
7773           tree_view->priv->open_dest_timeout =
7774             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7775         }
7776       else
7777         {
7778           add_scroll_timeout (tree_view);
7779         }
7780
7781       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7782         {
7783           /* Request data so we can use the source row when
7784            * determining whether to accept the drop
7785            */
7786           set_status_pending (context, suggested_action);
7787           gtk_drag_get_data (widget, context, target, time);
7788         }
7789       else
7790         {
7791           set_status_pending (context, 0);
7792           gdk_drag_status (context, suggested_action, time);
7793         }
7794     }
7795
7796   if (path)
7797     gtk_tree_path_free (path);
7798
7799   return TRUE;
7800 }
7801
7802
7803 static gboolean
7804 gtk_tree_view_drag_drop (GtkWidget        *widget,
7805                          GdkDragContext   *context,
7806                          /* coordinates relative to the widget */
7807                          gint              x,
7808                          gint              y,
7809                          guint             time)
7810 {
7811   GtkTreeView *tree_view;
7812   GtkTreePath *path;
7813   GdkDragAction suggested_action = 0;
7814   GdkAtom target = GDK_NONE;
7815   TreeViewDragInfo *di;
7816   GtkTreeModel *model;
7817   gboolean path_down_mode;
7818   gboolean drop_append_mode;
7819
7820   tree_view = GTK_TREE_VIEW (widget);
7821
7822   model = gtk_tree_view_get_model (tree_view);
7823
7824   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7825   remove_open_timeout (GTK_TREE_VIEW (widget));
7826
7827   di = get_info (tree_view);
7828
7829   if (di == NULL)
7830     return FALSE;
7831
7832   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7833     return FALSE;
7834
7835   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7836     return FALSE;
7837
7838   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7839
7840   if (target != GDK_NONE && path != NULL)
7841     {
7842       /* in case a motion had requested drag data, change things so we
7843        * treat drag data receives as a drop.
7844        */
7845       set_status_pending (context, 0);
7846       set_dest_row (context, model, path,
7847                     path_down_mode, tree_view->priv->empty_view_drop,
7848                     drop_append_mode);
7849     }
7850
7851   if (path)
7852     gtk_tree_path_free (path);
7853
7854   /* Unset this thing */
7855   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7856                                    NULL,
7857                                    GTK_TREE_VIEW_DROP_BEFORE);
7858
7859   if (target != GDK_NONE)
7860     {
7861       gtk_drag_get_data (widget, context, target, time);
7862       return TRUE;
7863     }
7864   else
7865     return FALSE;
7866 }
7867
7868 static void
7869 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7870                                   GdkDragContext   *context,
7871                                   /* coordinates relative to the widget */
7872                                   gint              x,
7873                                   gint              y,
7874                                   GtkSelectionData *selection_data,
7875                                   guint             info,
7876                                   guint             time)
7877 {
7878   GtkTreePath *path;
7879   TreeViewDragInfo *di;
7880   gboolean accepted = FALSE;
7881   GtkTreeModel *model;
7882   GtkTreeView *tree_view;
7883   GtkTreePath *dest_row;
7884   GdkDragAction suggested_action;
7885   gboolean path_down_mode;
7886   gboolean drop_append_mode;
7887
7888   tree_view = GTK_TREE_VIEW (widget);
7889
7890   model = gtk_tree_view_get_model (tree_view);
7891
7892   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7893     return;
7894
7895   di = get_info (tree_view);
7896
7897   if (di == NULL)
7898     return;
7899
7900   suggested_action = get_status_pending (context);
7901
7902   if (suggested_action)
7903     {
7904       /* We are getting this data due to a request in drag_motion,
7905        * rather than due to a request in drag_drop, so we are just
7906        * supposed to call drag_status, not actually paste in the
7907        * data.
7908        */
7909       path = get_logical_dest_row (tree_view, &path_down_mode,
7910                                    &drop_append_mode);
7911
7912       if (path == NULL)
7913         suggested_action = 0;
7914       else if (path_down_mode)
7915         gtk_tree_path_down (path);
7916
7917       if (suggested_action)
7918         {
7919           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7920                                                      path,
7921                                                      selection_data))
7922             {
7923               if (path_down_mode)
7924                 {
7925                   path_down_mode = FALSE;
7926                   gtk_tree_path_up (path);
7927
7928                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7929                                                              path,
7930                                                              selection_data))
7931                     suggested_action = 0;
7932                 }
7933               else
7934                 suggested_action = 0;
7935             }
7936         }
7937
7938       gdk_drag_status (context, suggested_action, time);
7939
7940       if (path)
7941         gtk_tree_path_free (path);
7942
7943       /* If you can't drop, remove user drop indicator until the next motion */
7944       if (suggested_action == 0)
7945         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7946                                          NULL,
7947                                          GTK_TREE_VIEW_DROP_BEFORE);
7948
7949       return;
7950     }
7951
7952   dest_row = get_dest_row (context, &path_down_mode);
7953
7954   if (dest_row == NULL)
7955     return;
7956
7957   if (gtk_selection_data_get_length (selection_data) >= 0)
7958     {
7959       if (path_down_mode)
7960         {
7961           gtk_tree_path_down (dest_row);
7962           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7963                                                      dest_row, selection_data))
7964             gtk_tree_path_up (dest_row);
7965         }
7966     }
7967
7968   if (gtk_selection_data_get_length (selection_data) >= 0)
7969     {
7970       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7971                                                  dest_row,
7972                                                  selection_data))
7973         accepted = TRUE;
7974     }
7975
7976   gtk_drag_finish (context,
7977                    accepted,
7978                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7979                    time);
7980
7981   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7982       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7983       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7984     {
7985       /* special special case drag to "0", scroll to first item */
7986       if (!tree_view->priv->scroll_to_path)
7987         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7988     }
7989
7990   gtk_tree_path_free (dest_row);
7991
7992   /* drop dest_row */
7993   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7994 }
7995
7996
7997
7998 /* GtkContainer Methods
7999  */
8000
8001
8002 static void
8003 gtk_tree_view_remove (GtkContainer *container,
8004                       GtkWidget    *widget)
8005 {
8006   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8007   GtkTreeViewChild *child = NULL;
8008   GList *tmp_list;
8009
8010   tmp_list = tree_view->priv->children;
8011   while (tmp_list)
8012     {
8013       child = tmp_list->data;
8014       if (child->widget == widget)
8015         {
8016           gtk_widget_unparent (widget);
8017
8018           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8019           g_list_free_1 (tmp_list);
8020           g_slice_free (GtkTreeViewChild, child);
8021           return;
8022         }
8023
8024       tmp_list = tmp_list->next;
8025     }
8026
8027   tmp_list = tree_view->priv->columns;
8028
8029   while (tmp_list)
8030     {
8031       GtkTreeViewColumn *column;
8032       GtkWidget         *button;
8033
8034       column = tmp_list->data;
8035       button = gtk_tree_view_column_get_button (column);
8036
8037       if (button == widget)
8038         {
8039           gtk_widget_unparent (widget);
8040           return;
8041         }
8042       tmp_list = tmp_list->next;
8043     }
8044 }
8045
8046 static void
8047 gtk_tree_view_forall (GtkContainer *container,
8048                       gboolean      include_internals,
8049                       GtkCallback   callback,
8050                       gpointer      callback_data)
8051 {
8052   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8053   GtkTreeViewChild *child = NULL;
8054   GtkTreeViewColumn *column;
8055   GtkWidget *button;
8056   GList *tmp_list;
8057
8058   tmp_list = tree_view->priv->children;
8059   while (tmp_list)
8060     {
8061       child = tmp_list->data;
8062       tmp_list = tmp_list->next;
8063
8064       (* callback) (child->widget, callback_data);
8065     }
8066   if (include_internals == FALSE)
8067     return;
8068
8069   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8070     {
8071       column = tmp_list->data;
8072       button = gtk_tree_view_column_get_button (column);
8073
8074       if (button)
8075         (* callback) (button, callback_data);
8076     }
8077 }
8078
8079 /* Returns TRUE is any of the columns contains a cell that can-focus.
8080  * If this is not the case, a column-spanning focus rectangle will be
8081  * drawn.
8082  */
8083 static gboolean
8084 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8085 {
8086   GList *list;
8087
8088   for (list = tree_view->priv->columns; list; list = list->next)
8089     {
8090       GtkTreeViewColumn *column = list->data;
8091
8092       if (!gtk_tree_view_column_get_visible (column))
8093         continue;
8094       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8095         return TRUE;
8096     }
8097
8098   return FALSE;
8099 }
8100
8101 static void
8102 column_sizing_notify (GObject    *object,
8103                       GParamSpec *pspec,
8104                       gpointer    data)
8105 {
8106   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8107
8108   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8109     /* disable fixed height mode */
8110     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8111 }
8112
8113 /**
8114  * gtk_tree_view_set_fixed_height_mode:
8115  * @tree_view: a #GtkTreeView
8116  * @enable: %TRUE to enable fixed height mode
8117  *
8118  * Enables or disables the fixed height mode of @tree_view.
8119  * Fixed height mode speeds up #GtkTreeView by assuming that all
8120  * rows have the same height.
8121  * Only enable this option if all rows are the same height and all
8122  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8123  *
8124  * Since: 2.6
8125  **/
8126 void
8127 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8128                                      gboolean     enable)
8129 {
8130   GList *l;
8131
8132   enable = enable != FALSE;
8133
8134   if (enable == tree_view->priv->fixed_height_mode)
8135     return;
8136
8137   if (!enable)
8138     {
8139       tree_view->priv->fixed_height_mode = 0;
8140       tree_view->priv->fixed_height = -1;
8141
8142       /* force a revalidation */
8143       install_presize_handler (tree_view);
8144     }
8145   else
8146     {
8147       /* make sure all columns are of type FIXED */
8148       for (l = tree_view->priv->columns; l; l = l->next)
8149         {
8150           GtkTreeViewColumn *c = l->data;
8151
8152           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8153         }
8154
8155       /* yes, we really have to do this is in a separate loop */
8156       for (l = tree_view->priv->columns; l; l = l->next)
8157         g_signal_connect (l->data, "notify::sizing",
8158                           G_CALLBACK (column_sizing_notify), tree_view);
8159
8160       tree_view->priv->fixed_height_mode = 1;
8161       tree_view->priv->fixed_height = -1;
8162
8163       if (tree_view->priv->tree)
8164         initialize_fixed_height_mode (tree_view);
8165     }
8166
8167   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8168 }
8169
8170 /**
8171  * gtk_tree_view_get_fixed_height_mode:
8172  * @tree_view: a #GtkTreeView
8173  *
8174  * Returns whether fixed height mode is turned on for @tree_view.
8175  *
8176  * Return value: %TRUE if @tree_view is in fixed height mode
8177  *
8178  * Since: 2.6
8179  **/
8180 gboolean
8181 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8182 {
8183   return tree_view->priv->fixed_height_mode;
8184 }
8185
8186 /* Returns TRUE if the focus is within the headers, after the focus operation is
8187  * done
8188  */
8189 static gboolean
8190 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8191                             GtkDirectionType  dir,
8192                             gboolean          clamp_column_visible)
8193 {
8194   GtkTreeViewColumn *column;
8195   GtkWidget *focus_child;
8196   GtkWidget *button;
8197   GList *last_column, *first_column;
8198   GList *tmp_list;
8199   gboolean rtl;
8200
8201   if (! tree_view->priv->headers_visible)
8202     return FALSE;
8203
8204   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8205
8206   first_column = tree_view->priv->columns;
8207   while (first_column)
8208     {
8209       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8210       button = gtk_tree_view_column_get_button (column);
8211
8212       if (gtk_widget_get_can_focus (button) &&
8213           gtk_tree_view_column_get_visible (column) &&
8214           (gtk_tree_view_column_get_clickable (column) ||
8215            gtk_tree_view_column_get_reorderable (column)))
8216         break;
8217       first_column = first_column->next;
8218     }
8219
8220   /* No headers are visible, or are focusable.  We can't focus in or out.
8221    */
8222   if (first_column == NULL)
8223     return FALSE;
8224
8225   last_column = g_list_last (tree_view->priv->columns);
8226   while (last_column)
8227     {
8228       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8229       button = gtk_tree_view_column_get_button (column);
8230
8231       if (gtk_widget_get_can_focus (button) &&
8232           gtk_tree_view_column_get_visible (column) &&
8233           (gtk_tree_view_column_get_clickable (column) ||
8234            gtk_tree_view_column_get_reorderable (column)))
8235         break;
8236       last_column = last_column->prev;
8237     }
8238
8239
8240   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8241
8242   switch (dir)
8243     {
8244     case GTK_DIR_TAB_BACKWARD:
8245     case GTK_DIR_TAB_FORWARD:
8246     case GTK_DIR_UP:
8247     case GTK_DIR_DOWN:
8248       if (focus_child == NULL)
8249         {
8250           if (tree_view->priv->focus_column != NULL)
8251             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8252           else
8253             button = NULL;
8254
8255           if (button && gtk_widget_get_can_focus (button))
8256             focus_child = button;
8257           else
8258             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8259
8260           gtk_widget_grab_focus (focus_child);
8261           break;
8262         }
8263       return FALSE;
8264
8265     case GTK_DIR_LEFT:
8266     case GTK_DIR_RIGHT:
8267       if (focus_child == NULL)
8268         {
8269           if (tree_view->priv->focus_column != NULL)
8270             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8271           else if (dir == GTK_DIR_LEFT)
8272             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8273           else
8274             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8275
8276           gtk_widget_grab_focus (focus_child);
8277           break;
8278         }
8279
8280       if (gtk_widget_child_focus (focus_child, dir))
8281         {
8282           /* The focus moves inside the button. */
8283           /* This is probably a great example of bad UI */
8284           break;
8285         }
8286
8287       /* We need to move the focus among the row of buttons. */
8288       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8289         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8290           break;
8291
8292       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8293           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8294         {
8295           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8296           break;
8297         }
8298
8299       while (tmp_list)
8300         {
8301           GtkTreeViewColumn *column;
8302           GtkWidget         *button;
8303
8304           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8305             tmp_list = tmp_list->next;
8306           else
8307             tmp_list = tmp_list->prev;
8308
8309           if (tmp_list == NULL)
8310             {
8311               g_warning ("Internal button not found");
8312               break;
8313             }
8314           column = tmp_list->data;
8315           button = gtk_tree_view_column_get_button (column);
8316           if (button &&
8317               gtk_tree_view_column_get_visible (column) &&
8318               gtk_widget_get_can_focus (button))
8319             {
8320               focus_child = button;
8321               gtk_widget_grab_focus (button);
8322               break;
8323             }
8324         }
8325       break;
8326     default:
8327       g_assert_not_reached ();
8328       break;
8329     }
8330
8331   /* if focus child is non-null, we assume it's been set to the current focus child
8332    */
8333   if (focus_child)
8334     {
8335       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8336         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8337           {
8338             _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (tmp_list->data));
8339             break;
8340           }
8341
8342       if (clamp_column_visible)
8343         {
8344           gtk_tree_view_clamp_column_visible (tree_view,
8345                                               tree_view->priv->focus_column,
8346                                               FALSE);
8347         }
8348     }
8349
8350   return (focus_child != NULL);
8351 }
8352
8353 /* This function returns in 'path' the first focusable path, if the given path
8354  * is already focusable, it's the returned one.
8355  */
8356 static gboolean
8357 search_first_focusable_path (GtkTreeView  *tree_view,
8358                              GtkTreePath **path,
8359                              gboolean      search_forward,
8360                              GtkRBTree   **new_tree,
8361                              GtkRBNode   **new_node)
8362 {
8363   GtkRBTree *tree = NULL;
8364   GtkRBNode *node = NULL;
8365
8366   if (!path || !*path)
8367     return FALSE;
8368
8369   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8370
8371   if (!tree || !node)
8372     return FALSE;
8373
8374   while (node && row_is_separator (tree_view, NULL, *path))
8375     {
8376       if (search_forward)
8377         _gtk_rbtree_next_full (tree, node, &tree, &node);
8378       else
8379         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8380
8381       if (*path)
8382         gtk_tree_path_free (*path);
8383
8384       if (node)
8385         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8386       else
8387         *path = NULL;
8388     }
8389
8390   if (new_tree)
8391     *new_tree = tree;
8392
8393   if (new_node)
8394     *new_node = node;
8395
8396   return (*path != NULL);
8397 }
8398
8399 static gint
8400 gtk_tree_view_focus (GtkWidget        *widget,
8401                      GtkDirectionType  direction)
8402 {
8403   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8404   GtkContainer *container = GTK_CONTAINER (widget);
8405   GtkWidget *focus_child;
8406
8407   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8408     return FALSE;
8409
8410   focus_child = gtk_container_get_focus_child (container);
8411
8412   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8413   /* Case 1.  Headers currently have focus. */
8414   if (focus_child)
8415     {
8416       switch (direction)
8417         {
8418         case GTK_DIR_LEFT:
8419         case GTK_DIR_RIGHT:
8420           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8421           return TRUE;
8422         case GTK_DIR_TAB_BACKWARD:
8423         case GTK_DIR_UP:
8424           return FALSE;
8425         case GTK_DIR_TAB_FORWARD:
8426         case GTK_DIR_DOWN:
8427           gtk_widget_grab_focus (widget);
8428           return TRUE;
8429         default:
8430           g_assert_not_reached ();
8431           return FALSE;
8432         }
8433     }
8434
8435   /* Case 2. We don't have focus at all. */
8436   if (!gtk_widget_has_focus (widget))
8437     {
8438       gtk_widget_grab_focus (widget);
8439       return TRUE;
8440     }
8441
8442   /* Case 3. We have focus already. */
8443   if (direction == GTK_DIR_TAB_BACKWARD)
8444     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8445   else if (direction == GTK_DIR_TAB_FORWARD)
8446     return FALSE;
8447
8448   /* Other directions caught by the keybindings */
8449   gtk_widget_grab_focus (widget);
8450   return TRUE;
8451 }
8452
8453 static void
8454 gtk_tree_view_grab_focus (GtkWidget *widget)
8455 {
8456   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8457
8458   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8459 }
8460
8461 static void
8462 gtk_tree_view_style_updated (GtkWidget *widget)
8463 {
8464   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8465   GList *list;
8466   GtkTreeViewColumn *column;
8467
8468   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8469
8470   if (gtk_widget_get_realized (widget))
8471     {
8472       gtk_tree_view_ensure_background (tree_view);
8473
8474       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8475       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8476     }
8477
8478   for (list = tree_view->priv->columns; list; list = list->next)
8479     {
8480       column = list->data;
8481       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8482     }
8483
8484   tree_view->priv->fixed_height = -1;
8485   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8486
8487   gtk_widget_queue_resize (widget);
8488 }
8489
8490
8491 static void
8492 gtk_tree_view_set_focus_child (GtkContainer *container,
8493                                GtkWidget    *child)
8494 {
8495   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8496   GList *list;
8497
8498   for (list = tree_view->priv->columns; list; list = list->next)
8499     {
8500       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8501         {
8502           _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
8503           break;
8504         }
8505     }
8506
8507   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8508 }
8509
8510 static GtkWidgetPath *
8511 gtk_tree_view_get_path_for_child (GtkContainer *container,
8512                                   GtkWidget    *child)
8513 {
8514   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8515   GtkWidgetPath *path;
8516   gboolean rtl;
8517   GList *list, *visible_columns = NULL;
8518   gint n_col = 0;
8519
8520   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8521   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8522
8523   for (list = tree_view->priv->columns; list; list = list->next)
8524     {
8525       GtkTreeViewColumn *column = list->data;
8526
8527       if (gtk_tree_view_column_get_visible (column))
8528         visible_columns = g_list_prepend (visible_columns, column);
8529     }
8530
8531   if (!rtl)
8532     visible_columns = g_list_reverse (visible_columns);
8533
8534   for (list = visible_columns; list != NULL; list = list->next)
8535     {
8536       GtkTreeViewColumn *column = list->data;
8537       GtkRegionFlags flags = 0;
8538
8539       n_col++;
8540
8541       if (gtk_tree_view_column_get_widget (column) != child &&
8542           gtk_tree_view_column_get_button (column) != child)
8543         continue;
8544
8545       if ((n_col % 2) == 0)
8546         flags |= GTK_REGION_EVEN;
8547       else
8548         flags |= GTK_REGION_ODD;
8549
8550       if (n_col == 1)
8551         flags |= GTK_REGION_FIRST;
8552
8553       if (!list->next)
8554         flags |= GTK_REGION_LAST;
8555
8556       gtk_widget_path_iter_add_region (path, gtk_widget_path_length (path) - 2, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8557       break;
8558     }
8559   g_list_free (visible_columns);
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
9013   g_return_if_fail (path != NULL);
9014
9015   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9016
9017   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9018     return;
9019
9020   if (tree == NULL)
9021     return;
9022
9023   /* check if the selection has been changed */
9024   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9025                         check_selection_helper, &selection_changed);
9026
9027   for (list = tree_view->priv->columns; list; list = list->next)
9028     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9029         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9030       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9031
9032   /* Ensure we don't have a dangling pointer to a dead node */
9033   ensure_unprelighted (tree_view);
9034
9035   /* Cancel editting if we've started */
9036   gtk_tree_view_stop_editing (tree_view, TRUE);
9037
9038   /* If the cursor row got deleted, move the cursor to the next row */
9039   if (tree_view->priv->cursor_node &&
9040       (tree_view->priv->cursor_node == node ||
9041        (node->children && (tree_view->priv->cursor_tree == node->children ||
9042                            _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree)))))
9043     {
9044       GtkTreePath *cursor_path;
9045
9046       cursor_tree = tree;
9047       cursor_node = _gtk_rbtree_next (tree, node);
9048       /* find the first node that is not going to be deleted */
9049       while (cursor_node == NULL && cursor_tree->parent_tree)
9050         {
9051           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9052                                           cursor_tree->parent_node);
9053           cursor_tree = cursor_tree->parent_tree;
9054         }
9055
9056       if (cursor_node != NULL)
9057         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9058       else
9059         cursor_path = NULL;
9060
9061       if (cursor_path == NULL ||
9062           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9063                                          &cursor_tree, &cursor_node))
9064         {
9065           /* It looks like we reached the end of the view without finding
9066            * a focusable row.  We will step backwards to find the last
9067            * focusable row.
9068            */
9069           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9070           if (cursor_node)
9071             {
9072               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9073               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9074                                                  &cursor_tree, &cursor_node))
9075                 cursor_node = NULL;
9076               gtk_tree_path_free (cursor_path);
9077             }
9078         }
9079       else if (cursor_path)
9080         gtk_tree_path_free (cursor_path);
9081
9082       cursor_changed = TRUE;
9083     }
9084
9085   if (tree_view->priv->destroy_count_func)
9086     {
9087       gint child_count = 0;
9088       if (node->children)
9089         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9090       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9091     }
9092
9093   if (tree->root->count == 1)
9094     {
9095       if (tree_view->priv->tree == tree)
9096         tree_view->priv->tree = NULL;
9097
9098       _gtk_tree_view_accessible_remove_state (tree_view,
9099                                               tree->parent_tree, tree->parent_node,
9100                                               GTK_CELL_RENDERER_EXPANDED);
9101       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9102       _gtk_rbtree_remove (tree);
9103     }
9104   else
9105     {
9106       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9107       _gtk_rbtree_remove_node (tree, node);
9108     }
9109
9110   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9111     {
9112       gtk_tree_row_reference_free (tree_view->priv->top_row);
9113       tree_view->priv->top_row = NULL;
9114     }
9115
9116   install_scroll_sync_handler (tree_view);
9117
9118   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9119
9120   if (cursor_changed)
9121     {
9122       if (cursor_node)
9123         {
9124           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9125           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9126           gtk_tree_path_free (cursor_path);
9127         }
9128       else
9129         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9130     }
9131   if (selection_changed)
9132     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9133 }
9134
9135 static void
9136 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9137                               GtkTreePath  *parent,
9138                               GtkTreeIter  *iter,
9139                               gint         *new_order,
9140                               gpointer      data)
9141 {
9142   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9143   GtkRBTree *tree;
9144   GtkRBNode *node;
9145   gint len;
9146
9147   len = gtk_tree_model_iter_n_children (model, iter);
9148
9149   if (len < 2)
9150     return;
9151
9152   gtk_tree_row_reference_reordered (G_OBJECT (data),
9153                                     parent,
9154                                     iter,
9155                                     new_order);
9156
9157   if (_gtk_tree_view_find_node (tree_view,
9158                                 parent,
9159                                 &tree,
9160                                 &node))
9161     return;
9162
9163   /* We need to special case the parent path */
9164   if (tree == NULL)
9165     tree = tree_view->priv->tree;
9166   else
9167     tree = node->children;
9168
9169   if (tree == NULL)
9170     return;
9171
9172   if (tree_view->priv->edited_column)
9173     gtk_tree_view_stop_editing (tree_view, TRUE);
9174
9175   /* we need to be unprelighted */
9176   ensure_unprelighted (tree_view);
9177
9178   _gtk_rbtree_reorder (tree, new_order, len);
9179
9180   _gtk_tree_view_accessible_reorder (tree_view);
9181
9182   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9183
9184   gtk_tree_view_dy_to_top_row (tree_view);
9185 }
9186
9187
9188 /* Internal tree functions
9189  */
9190
9191
9192 static void
9193 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9194                                      GtkRBTree         *tree,
9195                                      GtkTreeViewColumn *column,
9196                                      gint              *x1,
9197                                      gint              *x2)
9198 {
9199   GtkTreeViewColumn *tmp_column = NULL;
9200   gint total_width;
9201   GList *list;
9202   gboolean rtl;
9203
9204   if (x1)
9205     *x1 = 0;
9206
9207   if (x2)
9208     *x2 = 0;
9209
9210   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9211
9212   total_width = 0;
9213   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9214        list;
9215        list = (rtl ? list->prev : list->next))
9216     {
9217       tmp_column = list->data;
9218
9219       if (tmp_column == column)
9220         break;
9221
9222       if (gtk_tree_view_column_get_visible (tmp_column))
9223         total_width += gtk_tree_view_column_get_width (tmp_column);
9224     }
9225
9226   if (tmp_column != column)
9227     {
9228       g_warning (G_STRLOC": passed-in column isn't in the tree");
9229       return;
9230     }
9231
9232   if (x1)
9233     *x1 = total_width;
9234
9235   if (x2)
9236     {
9237       if (gtk_tree_view_column_get_visible (column))
9238         *x2 = total_width + gtk_tree_view_column_get_width (column);
9239       else
9240         *x2 = total_width; /* width of 0 */
9241     }
9242 }
9243
9244 static void
9245 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9246                                 GtkRBTree   *tree,
9247                                 gint        *x1,
9248                                 gint        *x2)
9249 {
9250   gint x_offset = 0;
9251   GList *list;
9252   GtkTreeViewColumn *tmp_column = NULL;
9253   gint total_width;
9254   gint expander_size;
9255   gboolean indent_expanders;
9256   gboolean rtl;
9257
9258   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9259   expander_size = gtk_tree_view_get_expander_size (tree_view);
9260
9261   total_width = 0;
9262   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9263        list;
9264        list = (rtl ? list->prev : list->next))
9265     {
9266       tmp_column = list->data;
9267
9268       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9269         {
9270           if (rtl)
9271             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - expander_size;
9272           else
9273             x_offset = total_width;
9274           break;
9275         }
9276
9277       if (gtk_tree_view_column_get_visible (tmp_column))
9278         total_width += gtk_tree_view_column_get_width (tmp_column);
9279     }
9280
9281   gtk_widget_style_get (GTK_WIDGET (tree_view),
9282                         "indent-expanders", &indent_expanders,
9283                         NULL);
9284
9285   if (indent_expanders)
9286     {
9287       if (rtl)
9288         x_offset -= expander_size * _gtk_rbtree_get_depth (tree);
9289       else
9290         x_offset += expander_size * _gtk_rbtree_get_depth (tree);
9291     }
9292
9293   *x1 = x_offset;
9294
9295   if (tmp_column &&
9296       gtk_tree_view_column_get_visible (tmp_column))
9297     /* +1 because x2 isn't included in the range. */
9298     *x2 = *x1 + expander_size + 1;
9299   else
9300     *x2 = *x1;
9301 }
9302
9303 static void
9304 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9305                           GtkRBTree   *tree,
9306                           GtkTreeIter *iter,
9307                           gint         depth,
9308                           gboolean     recurse)
9309 {
9310   GtkRBNode *temp = NULL;
9311   GtkTreePath *path = NULL;
9312
9313   do
9314     {
9315       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9316       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9317
9318       if (tree_view->priv->fixed_height > 0)
9319         {
9320           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9321             {
9322               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9323               _gtk_rbtree_node_mark_valid (tree, temp);
9324             }
9325         }
9326
9327       if (tree_view->priv->is_list)
9328         continue;
9329
9330       if (recurse)
9331         {
9332           GtkTreeIter child;
9333
9334           if (!path)
9335             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9336           else
9337             gtk_tree_path_next (path);
9338
9339           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9340             {
9341               gboolean expand;
9342
9343               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9344
9345               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9346                   && !expand)
9347                 {
9348                   temp->children = _gtk_rbtree_new ();
9349                   temp->children->parent_tree = tree;
9350                   temp->children->parent_node = temp;
9351                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9352                 }
9353             }
9354         }
9355
9356       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9357         {
9358           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9359             temp->flags ^= GTK_RBNODE_IS_PARENT;
9360         }
9361     }
9362   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9363
9364   if (path)
9365     gtk_tree_path_free (path);
9366 }
9367
9368 /* Make sure the node is visible vertically */
9369 static void
9370 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9371                                   GtkRBTree   *tree,
9372                                   GtkRBNode   *node)
9373 {
9374   gint node_dy, height;
9375   GtkTreePath *path = NULL;
9376
9377   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9378     return;
9379
9380   /* just return if the node is visible, avoiding a costly expose */
9381   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9382   height = gtk_tree_view_get_row_height (tree_view, node);
9383   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9384       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9385       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9386                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9387     return;
9388
9389   path = _gtk_tree_path_new_from_rbtree (tree, node);
9390   if (path)
9391     {
9392       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9393       gtk_tree_path_free (path);
9394     }
9395 }
9396
9397 static void
9398 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9399                                     GtkTreeViewColumn *column,
9400                                     gboolean           focus_to_cell)
9401 {
9402   GtkAllocation allocation;
9403   gint x, width;
9404
9405   if (column == NULL)
9406     return;
9407
9408   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9409   x = allocation.x;
9410   width = allocation.width;
9411
9412   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9413     {
9414       /* The column is larger than the horizontal page size.  If the
9415        * column has cells which can be focussed individually, then we make
9416        * sure the cell which gets focus is fully visible (if even the
9417        * focus cell is bigger than the page size, we make sure the
9418        * left-hand side of the cell is visible).
9419        *
9420        * If the column does not have an activatable cell, we
9421        * make sure the left-hand side of the column is visible.
9422        */
9423
9424       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9425         {
9426           GtkCellArea *cell_area;
9427           GtkCellRenderer *focus_cell;
9428
9429           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9430           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9431
9432           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9433                                                       &x, &width))
9434             {
9435               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9436                 {
9437                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9438                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9439                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9440                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9441                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9442                 }
9443             }
9444         }
9445
9446       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9447     }
9448   else
9449     {
9450       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9451           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9452                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9453       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9454         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9455   }
9456 }
9457
9458 /* This function could be more efficient.  I'll optimize it if profiling seems
9459  * to imply that it is important */
9460 GtkTreePath *
9461 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9462                                 GtkRBNode   *node)
9463 {
9464   GtkTreePath *path;
9465   GtkRBTree *tmp_tree;
9466   GtkRBNode *tmp_node, *last;
9467   gint count;
9468
9469   path = gtk_tree_path_new ();
9470
9471   g_return_val_if_fail (node != NULL, path);
9472
9473   count = 1 + node->left->count;
9474
9475   last = node;
9476   tmp_node = node->parent;
9477   tmp_tree = tree;
9478   while (tmp_tree)
9479     {
9480       while (!_gtk_rbtree_is_nil (tmp_node))
9481         {
9482           if (tmp_node->right == last)
9483             count += 1 + tmp_node->left->count;
9484           last = tmp_node;
9485           tmp_node = tmp_node->parent;
9486         }
9487       gtk_tree_path_prepend_index (path, count - 1);
9488       last = tmp_tree->parent_node;
9489       tmp_tree = tmp_tree->parent_tree;
9490       if (last)
9491         {
9492           count = 1 + last->left->count;
9493           tmp_node = last->parent;
9494         }
9495     }
9496   return path;
9497 }
9498
9499 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9500  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9501  * both set to NULL.
9502  */
9503 gboolean
9504 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9505                           GtkTreePath  *path,
9506                           GtkRBTree   **tree,
9507                           GtkRBNode   **node)
9508 {
9509   GtkRBNode *tmpnode = NULL;
9510   GtkRBTree *tmptree = tree_view->priv->tree;
9511   gint *indices = gtk_tree_path_get_indices (path);
9512   gint depth = gtk_tree_path_get_depth (path);
9513   gint i = 0;
9514
9515   *node = NULL;
9516   *tree = NULL;
9517
9518   if (depth == 0 || tmptree == NULL)
9519     return FALSE;
9520   do
9521     {
9522       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9523       ++i;
9524       if (tmpnode == NULL)
9525         {
9526           *tree = NULL;
9527           *node = NULL;
9528           return FALSE;
9529         }
9530       if (i >= depth)
9531         {
9532           *tree = tmptree;
9533           *node = tmpnode;
9534           return FALSE;
9535         }
9536       *tree = tmptree;
9537       *node = tmpnode;
9538       tmptree = tmpnode->children;
9539       if (tmptree == NULL)
9540         return TRUE;
9541     }
9542   while (1);
9543 }
9544
9545 static gboolean
9546 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9547                                   GtkTreeViewColumn *column)
9548 {
9549   GList *list;
9550
9551   if (tree_view->priv->is_list)
9552     return FALSE;
9553
9554   if (tree_view->priv->expander_column != NULL)
9555     {
9556       if (tree_view->priv->expander_column == column)
9557         return TRUE;
9558       return FALSE;
9559     }
9560   else
9561     {
9562       for (list = tree_view->priv->columns;
9563            list;
9564            list = list->next)
9565         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9566           break;
9567       if (list && list->data == column)
9568         return TRUE;
9569     }
9570   return FALSE;
9571 }
9572
9573 static inline gboolean
9574 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9575 {
9576   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9577     return TRUE;
9578   /* else */
9579   return FALSE;
9580 }
9581
9582 static void
9583 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9584                                 guint           keyval,
9585                                 guint           modmask,
9586                                 gboolean        add_shifted_binding,
9587                                 GtkMovementStep step,
9588                                 gint            count)
9589 {
9590
9591   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9592                                 "move-cursor", 2,
9593                                 G_TYPE_ENUM, step,
9594                                 G_TYPE_INT, count);
9595
9596   if (add_shifted_binding)
9597     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9598                                   "move-cursor", 2,
9599                                   G_TYPE_ENUM, step,
9600                                   G_TYPE_INT, count);
9601
9602   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9603    return;
9604
9605   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9606                                 "move-cursor", 2,
9607                                 G_TYPE_ENUM, step,
9608                                 G_TYPE_INT, count);
9609
9610   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9611                                 "move-cursor", 2,
9612                                 G_TYPE_ENUM, step,
9613                                 G_TYPE_INT, count);
9614 }
9615
9616 static gint
9617 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9618                                  GtkTreeIter  *iter,
9619                                  GtkRBTree    *tree,
9620                                  GtkRBNode    *node)
9621 {
9622   gint retval = FALSE;
9623   do
9624     {
9625       g_return_val_if_fail (node != NULL, FALSE);
9626
9627       if (node->children)
9628         {
9629           GtkTreeIter child;
9630           GtkRBTree *new_tree;
9631           GtkRBNode *new_node;
9632
9633           new_tree = node->children;
9634           new_node = _gtk_rbtree_first (new_tree);
9635
9636           if (!gtk_tree_model_iter_children (model, &child, iter))
9637             return FALSE;
9638
9639           retval = gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node) | retval;
9640         }
9641
9642       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9643         retval = TRUE;
9644       gtk_tree_model_unref_node (model, iter);
9645       node = _gtk_rbtree_next (tree, node);
9646     }
9647   while (gtk_tree_model_iter_next (model, iter));
9648
9649   return retval;
9650 }
9651
9652 static gint
9653 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9654                                               GtkRBTree   *tree)
9655 {
9656   GtkTreeIter iter;
9657   GtkTreePath *path;
9658   GtkRBNode *node;
9659   gint retval;
9660
9661   if (!tree)
9662     return FALSE;
9663
9664   node = _gtk_rbtree_first (tree);
9665
9666   g_return_val_if_fail (node != NULL, FALSE);
9667   path = _gtk_tree_path_new_from_rbtree (tree, node);
9668   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9669                            &iter, path);
9670   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9671   gtk_tree_path_free (path);
9672
9673   return retval;
9674 }
9675
9676 static void
9677 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9678                                     GtkTreeViewColumn *column)
9679 {
9680   GtkTreeViewColumn *left_column;
9681   GtkTreeViewColumn *cur_column = NULL;
9682   GtkTreeViewColumnReorder *reorder;
9683   gboolean rtl;
9684   GList *tmp_list;
9685   gint left;
9686
9687   /* We want to precalculate the motion list such that we know what column slots
9688    * are available.
9689    */
9690   left_column = NULL;
9691   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9692
9693   /* First, identify all possible drop spots */
9694   if (rtl)
9695     tmp_list = g_list_last (tree_view->priv->columns);
9696   else
9697     tmp_list = g_list_first (tree_view->priv->columns);
9698
9699   while (tmp_list)
9700     {
9701       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9702       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9703
9704       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9705         continue;
9706
9707       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9708       if (left_column != column && cur_column != column &&
9709           tree_view->priv->column_drop_func &&
9710           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9711         {
9712           left_column = cur_column;
9713           continue;
9714         }
9715       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9716       reorder->left_column = left_column;
9717       left_column = reorder->right_column = cur_column;
9718
9719       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9720     }
9721
9722   /* Add the last one */
9723   if (tree_view->priv->column_drop_func == NULL ||
9724       ((left_column != column) &&
9725        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9726     {
9727       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9728       reorder->left_column = left_column;
9729       reorder->right_column = NULL;
9730       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9731     }
9732
9733   /* We quickly check to see if it even makes sense to reorder columns. */
9734   /* If there is nothing that can be moved, then we return */
9735
9736   if (tree_view->priv->column_drag_info == NULL)
9737     return;
9738
9739   /* We know there are always 2 slots possbile, as you can always return column. */
9740   /* If that's all there is, return */
9741   if (tree_view->priv->column_drag_info->next == NULL ||
9742       (tree_view->priv->column_drag_info->next->next == NULL &&
9743        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9744        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9745     {
9746       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9747         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9748       g_list_free (tree_view->priv->column_drag_info);
9749       tree_view->priv->column_drag_info = NULL;
9750       return;
9751     }
9752   /* We fill in the ranges for the columns, now that we've isolated them */
9753   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9754
9755   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9756     {
9757       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9758
9759       reorder->left_align = left;
9760       if (tmp_list->next != NULL)
9761         {
9762           GtkAllocation right_allocation, left_allocation;
9763           GtkWidget    *left_button, *right_button;
9764
9765           g_assert (tmp_list->next->data);
9766
9767           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9768           left_button  = gtk_tree_view_column_get_button
9769             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9770
9771           gtk_widget_get_allocation (right_button, &right_allocation);
9772           gtk_widget_get_allocation (left_button, &left_allocation);
9773           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9774         }
9775       else
9776         {
9777           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9778                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9779         }
9780     }
9781 }
9782
9783 void
9784 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9785                                   GtkTreeViewColumn *column,
9786                                   GdkDevice         *device)
9787 {
9788   GdkEvent *send_event;
9789   GtkAllocation allocation;
9790   GtkAllocation button_allocation;
9791   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9792   GtkWidget *button;
9793   GdkDevice *pointer, *keyboard;
9794   GdkWindowAttr attributes;
9795   guint attributes_mask;
9796   GtkStyleContext *context;
9797
9798   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9799   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9800   g_return_if_fail (tree_view->priv->drag_window == NULL);
9801
9802   gtk_tree_view_set_column_drag_info (tree_view, column);
9803
9804   if (tree_view->priv->column_drag_info == NULL)
9805     return;
9806
9807   button = gtk_tree_view_column_get_button (column);
9808
9809   context = gtk_widget_get_style_context (button);
9810   gtk_style_context_add_class (context, STYLE_CLASS_DND);
9811
9812   gtk_widget_get_allocation (button, &button_allocation);
9813
9814   attributes.window_type = GDK_WINDOW_CHILD;
9815   attributes.wclass = GDK_INPUT_OUTPUT;
9816   attributes.x = button_allocation.x;
9817   attributes.y = 0;
9818   attributes.width = button_allocation.width;
9819   attributes.height = button_allocation.height;
9820   attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9821   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9822   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9823
9824   tree_view->priv->drag_window = gdk_window_new (tree_view->priv->header_window,
9825                                                  &attributes,
9826                                                  attributes_mask);
9827   gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9828
9829   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9830     {
9831       keyboard = device;
9832       pointer = gdk_device_get_associated_device (device);
9833     }
9834   else
9835     {
9836       pointer = device;
9837       keyboard = gdk_device_get_associated_device (device);
9838     }
9839
9840   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9841   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9842
9843   gtk_grab_remove (button);
9844
9845   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9846   send_event->crossing.send_event = TRUE;
9847   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9848   send_event->crossing.subwindow = NULL;
9849   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9850   send_event->crossing.time = GDK_CURRENT_TIME;
9851   gdk_event_set_device (send_event, device);
9852
9853   gtk_propagate_event (button, send_event);
9854   gdk_event_free (send_event);
9855
9856   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9857   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9858   send_event->button.send_event = TRUE;
9859   send_event->button.time = GDK_CURRENT_TIME;
9860   send_event->button.x = -1;
9861   send_event->button.y = -1;
9862   send_event->button.axes = NULL;
9863   send_event->button.state = 0;
9864   send_event->button.button = GDK_BUTTON_PRIMARY;
9865   send_event->button.x_root = 0;
9866   send_event->button.y_root = 0;
9867   gdk_event_set_device (send_event, device);
9868
9869   gtk_propagate_event (button, send_event);
9870   gdk_event_free (send_event);
9871
9872   /* Kids, don't try this at home */
9873   g_object_ref (button);
9874   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9875   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9876   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9877   g_object_unref (button);
9878
9879   gtk_widget_get_allocation (button, &button_allocation);
9880   tree_view->priv->drag_column_x = button_allocation.x;
9881   allocation = button_allocation;
9882   allocation.x = 0;
9883   gtk_widget_size_allocate (button, &allocation);
9884   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9885
9886   tree_view->priv->drag_column = column;
9887   gdk_window_show (tree_view->priv->drag_window);
9888
9889   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9890   while (gtk_events_pending ())
9891     gtk_main_iteration ();
9892
9893   tree_view->priv->in_column_drag = TRUE;
9894
9895   gdk_device_grab (pointer,
9896                    tree_view->priv->drag_window,
9897                    GDK_OWNERSHIP_NONE,
9898                    FALSE,
9899                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9900                    NULL,
9901                    GDK_CURRENT_TIME);
9902   gdk_device_grab (keyboard,
9903                    tree_view->priv->drag_window,
9904                    GDK_OWNERSHIP_NONE,
9905                    FALSE,
9906                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9907                    NULL,
9908                    GDK_CURRENT_TIME);
9909 }
9910
9911 static void
9912 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9913                                 GtkRBTree          *tree,
9914                                 GtkRBNode          *node)
9915 {
9916   GtkAllocation allocation;
9917   GdkRectangle rect;
9918
9919   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9920     return;
9921
9922   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9923   rect.x = 0;
9924   rect.width = gtk_tree_view_get_expander_size (tree_view);
9925   rect.width = MAX (rect.width, MAX (tree_view->priv->width, allocation.width));
9926
9927   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9928   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9929
9930   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9931 }
9932
9933 void
9934 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9935                                 GtkRBTree          *tree,
9936                                 GtkRBNode          *node,
9937                                 const GdkRectangle *clip_rect)
9938 {
9939   GtkAllocation allocation;
9940   GdkRectangle rect;
9941
9942   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9943     return;
9944
9945   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9946   rect.x = 0;
9947   rect.width = MAX (tree_view->priv->width, allocation.width);
9948
9949   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9950   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9951
9952   if (clip_rect)
9953     {
9954       GdkRectangle new_rect;
9955
9956       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9957
9958       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9959     }
9960   else
9961     {
9962       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9963     }
9964 }
9965
9966 static inline gint
9967 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9968 {
9969   if (tree_view->priv->headers_visible)
9970     return tree_view->priv->header_height;
9971   /* else */
9972   return 0;
9973 }
9974
9975 gint
9976 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9977 {
9978   return tree_view->priv->header_height;
9979 }
9980
9981 void
9982 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9983                                        GtkTreeViewRowSeparatorFunc *func,
9984                                        gpointer                    *data)
9985 {
9986   *func = tree_view->priv->row_separator_func;
9987   *data = tree_view->priv->row_separator_data;
9988 }
9989
9990 GtkTreePath *
9991 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9992 {
9993   if (tree_view->priv->anchor)
9994     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9995
9996   return NULL;
9997 }
9998
9999 void
10000 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
10001                                 GtkTreePath *anchor_path)
10002 {
10003   if (tree_view->priv->anchor)
10004     {
10005       gtk_tree_row_reference_free (tree_view->priv->anchor);
10006       tree_view->priv->anchor = NULL;
10007     }
10008
10009   if (anchor_path && tree_view->priv->model)
10010     tree_view->priv->anchor =
10011       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10012                                         tree_view->priv->model, anchor_path);
10013 }
10014
10015 GtkRBTree *
10016 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
10017 {
10018   return tree_view->priv->tree;
10019 }
10020
10021 gboolean
10022 _gtk_tree_view_get_cursor_node (GtkTreeView  *tree_view,
10023                                 GtkRBTree   **tree,
10024                                 GtkRBNode   **node)
10025 {
10026   GtkTreeViewPrivate *priv;
10027
10028   priv = tree_view->priv;
10029
10030   if (priv->cursor_node == NULL)
10031     return FALSE;
10032
10033   *tree = priv->cursor_tree;
10034   *node = priv->cursor_node;
10035
10036   return TRUE;
10037 }
10038
10039 GdkWindow *
10040 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10041 {
10042   return tree_view->priv->header_window;
10043 }
10044
10045 GtkTreeViewColumn *
10046 _gtk_tree_view_get_focus_column (GtkTreeView *tree_view)
10047 {
10048   return tree_view->priv->focus_column;
10049 }
10050
10051 void
10052 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10053                                  GtkTreeViewColumn *column)
10054 {
10055   GtkTreeViewColumn *old_column = tree_view->priv->focus_column;
10056
10057   if (old_column == column)
10058     return;
10059
10060   tree_view->priv->focus_column = column;
10061
10062   _gtk_tree_view_accessible_update_focus_column (tree_view,
10063                                                  old_column,
10064                                                  column);
10065 }
10066
10067
10068 static void
10069 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10070                                GtkTreePath        *path,
10071                                const GdkRectangle *clip_rect)
10072 {
10073   GtkRBTree *tree = NULL;
10074   GtkRBNode *node = NULL;
10075
10076   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10077
10078   if (tree)
10079     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10080 }
10081
10082 /* x and y are the mouse position
10083  */
10084 static void
10085 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10086                           cairo_t     *cr,
10087                           GtkRBTree   *tree,
10088                           GtkRBNode   *node)
10089 {
10090   GdkRectangle area;
10091   GtkStateFlags state = 0;
10092   GtkStyleContext *context;
10093   GtkWidget *widget;
10094   gint x_offset = 0;
10095   gint x2;
10096   gint vertical_separator;
10097   gint expander_size;
10098   GtkCellRendererState flags = 0;
10099
10100   widget = GTK_WIDGET (tree_view);
10101   context = gtk_widget_get_style_context (widget);
10102
10103   gtk_widget_style_get (widget,
10104                         "vertical-separator", &vertical_separator,
10105                         NULL);
10106   expander_size = gtk_tree_view_get_expander_size (tree_view) - EXPANDER_EXTRA_PADDING;
10107
10108   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10109     return;
10110
10111   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10112
10113   area.x = x_offset;
10114   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10115                                                  vertical_separator);
10116   area.width = expander_size;
10117   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10118                                                     vertical_separator);
10119
10120   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10121     flags |= GTK_CELL_RENDERER_SELECTED;
10122
10123   if (node == tree_view->priv->prelight_node &&
10124       tree_view->priv->arrow_prelit)
10125     flags |= GTK_CELL_RENDERER_PRELIT;
10126
10127   state = gtk_cell_renderer_get_state (NULL, widget, flags);
10128
10129   if (node->children != NULL)
10130     state |= GTK_STATE_FLAG_ACTIVE;
10131   else
10132     state &= ~(GTK_STATE_FLAG_ACTIVE);
10133
10134   gtk_style_context_save (context);
10135
10136   gtk_style_context_set_state (context, state);
10137   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10138
10139   gtk_render_expander (context, cr,
10140                        area.x, area.y,
10141                        area.width, area.height);
10142
10143   gtk_style_context_restore (context);
10144 }
10145
10146 static void
10147 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10148
10149 {
10150   GtkTreePath *cursor_path;
10151
10152   if ((tree_view->priv->tree == NULL) ||
10153       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10154     return;
10155
10156   cursor_path = NULL;
10157   if (tree_view->priv->cursor_node)
10158     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10159                                                   tree_view->priv->cursor_node);
10160
10161   if (cursor_path == NULL)
10162     {
10163       /* Consult the selection before defaulting to the
10164        * first focusable element
10165        */
10166       GList *selected_rows;
10167       GtkTreeModel *model;
10168       GtkTreeSelection *selection;
10169
10170       selection = gtk_tree_view_get_selection (tree_view);
10171       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10172
10173       if (selected_rows)
10174         {
10175           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10176           g_list_free_full (selected_rows, (GDestroyNotify) gtk_tree_path_free);
10177         }
10178       else
10179         {
10180           cursor_path = gtk_tree_path_new_first ();
10181           search_first_focusable_path (tree_view, &cursor_path,
10182                                        TRUE, NULL, NULL);
10183         }
10184
10185       if (cursor_path)
10186         {
10187           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10188             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10189           else
10190             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10191         }
10192     }
10193
10194   if (cursor_path)
10195     {
10196       tree_view->priv->draw_keyfocus = TRUE;
10197
10198       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10199       gtk_tree_path_free (cursor_path);
10200
10201       if (tree_view->priv->focus_column == NULL)
10202         {
10203           GList *list;
10204           for (list = tree_view->priv->columns; list; list = list->next)
10205             {
10206               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10207                 {
10208                   GtkCellArea *cell_area;
10209
10210                   _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
10211
10212                   /* This happens when the treeview initially grabs focus and there
10213                    * is no column in focus, here we explicitly focus into the first cell */
10214                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10215                   if (!gtk_cell_area_get_focus_cell (cell_area))
10216                     {
10217                       gboolean rtl;
10218
10219                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10220                       gtk_cell_area_focus (cell_area,
10221                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10222                     }
10223
10224                   break;
10225                 }
10226             }
10227         }
10228     }
10229 }
10230
10231 static void
10232 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10233                                    gint         count)
10234 {
10235   gint selection_count;
10236   GtkRBTree *new_cursor_tree = NULL;
10237   GtkRBNode *new_cursor_node = NULL;
10238   GtkTreePath *cursor_path = NULL;
10239   gboolean grab_focus = TRUE;
10240   gboolean selectable;
10241   GtkDirectionType direction;
10242   GtkCellArea *cell_area = NULL;
10243   GtkCellRenderer *last_focus_cell = NULL;
10244   GtkTreeIter iter;
10245
10246   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10247     return;
10248
10249   if (tree_view->priv->cursor_node == NULL)
10250     return;
10251
10252   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10253                                                 tree_view->priv->cursor_node);
10254
10255   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10256
10257   if (tree_view->priv->focus_column)
10258     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10259
10260   /* If focus stays in the area for this row, then just return for this round */
10261   if (cell_area && (count == -1 || count == 1) &&
10262       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10263     {
10264       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10265                                                tree_view->priv->model,
10266                                                &iter,
10267                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10268                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10269
10270       /* Save the last cell that had focus, if we hit the end of the view we'll give
10271        * focus back to it. */
10272       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10273
10274       /* If focus stays in the area, no need to change the cursor row */
10275       if (gtk_cell_area_focus (cell_area, direction))
10276         return;
10277     }
10278
10279   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10280   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10281                                                       tree_view->priv->cursor_node,
10282                                                       cursor_path);
10283
10284   if (selection_count == 0
10285       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10286       && !tree_view->priv->modify_selection_pressed
10287       && selectable)
10288     {
10289       /* Don't move the cursor, but just select the current node */
10290       new_cursor_tree = tree_view->priv->cursor_tree;
10291       new_cursor_node = tree_view->priv->cursor_node;
10292     }
10293   else
10294     {
10295       if (count == -1)
10296         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10297                                &new_cursor_tree, &new_cursor_node);
10298       else
10299         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10300                                &new_cursor_tree, &new_cursor_node);
10301     }
10302
10303   gtk_tree_path_free (cursor_path);
10304
10305   if (new_cursor_node)
10306     {
10307       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10308
10309       search_first_focusable_path (tree_view, &cursor_path,
10310                                    (count != -1),
10311                                    &new_cursor_tree,
10312                                    &new_cursor_node);
10313
10314       if (cursor_path)
10315         gtk_tree_path_free (cursor_path);
10316     }
10317
10318   /*
10319    * If the list has only one item and multi-selection is set then select
10320    * the row (if not yet selected).
10321    */
10322   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10323       new_cursor_node == NULL)
10324     {
10325       if (count == -1)
10326         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10327                                &new_cursor_tree, &new_cursor_node);
10328       else
10329         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10330                                &new_cursor_tree, &new_cursor_node);
10331
10332       if (new_cursor_node == NULL
10333           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10334         {
10335           new_cursor_node = tree_view->priv->cursor_node;
10336           new_cursor_tree = tree_view->priv->cursor_tree;
10337         }
10338       else
10339         {
10340           new_cursor_tree = NULL;
10341           new_cursor_node = NULL;
10342         }
10343     }
10344
10345   if (new_cursor_node)
10346     {
10347       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10348       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10349       gtk_tree_path_free (cursor_path);
10350
10351       /* Give focus to the area in the new row */
10352       if (cell_area)
10353         gtk_cell_area_focus (cell_area, direction);
10354     }
10355   else
10356     {
10357       gtk_tree_view_clamp_node_visible (tree_view,
10358                                         tree_view->priv->cursor_tree,
10359                                         tree_view->priv->cursor_node);
10360
10361       if (!tree_view->priv->extend_selection_pressed)
10362         {
10363           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10364                                           count < 0 ?
10365                                           GTK_DIR_UP : GTK_DIR_DOWN))
10366             {
10367               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10368
10369               if (toplevel)
10370                 gtk_widget_child_focus (toplevel,
10371                                         count < 0 ?
10372                                         GTK_DIR_TAB_BACKWARD :
10373                                         GTK_DIR_TAB_FORWARD);
10374
10375               grab_focus = FALSE;
10376             }
10377         }
10378       else
10379         {
10380           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10381         }
10382
10383       if (cell_area)
10384         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10385     }
10386
10387   if (grab_focus)
10388     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10389 }
10390
10391 static void
10392 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10393                                         gint         count)
10394 {
10395   GtkTreePath *old_cursor_path = NULL;
10396   GtkTreePath *cursor_path = NULL;
10397   GtkRBTree *start_cursor_tree = NULL;
10398   GtkRBNode *start_cursor_node = NULL;
10399   GtkRBTree *cursor_tree;
10400   GtkRBNode *cursor_node;
10401   gint y;
10402   gint window_y;
10403   gint vertical_separator;
10404
10405   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10406     return;
10407
10408   if (tree_view->priv->cursor_node == NULL)
10409     return;
10410
10411   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10412                                                     tree_view->priv->cursor_node);
10413
10414   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10415
10416   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10417   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10418   y += tree_view->priv->cursor_offset;
10419   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10420   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10421
10422   if (y >= tree_view->priv->height)
10423     y = tree_view->priv->height - 1;
10424
10425   tree_view->priv->cursor_offset =
10426     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10427                              &cursor_tree, &cursor_node);
10428
10429   if (cursor_tree == NULL)
10430     {
10431       /* FIXME: we lost the cursor.  Should we try to get one? */
10432       gtk_tree_path_free (old_cursor_path);
10433       return;
10434     }
10435
10436   if (tree_view->priv->cursor_offset
10437       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10438     {
10439       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10440                              &cursor_tree, &cursor_node);
10441       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10442     }
10443
10444   y -= tree_view->priv->cursor_offset;
10445   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10446
10447   start_cursor_tree = cursor_tree;
10448   start_cursor_node = cursor_node;
10449
10450   if (! search_first_focusable_path (tree_view, &cursor_path,
10451                                      (count != -1),
10452                                      &cursor_tree, &cursor_node))
10453     {
10454       /* It looks like we reached the end of the view without finding
10455        * a focusable row.  We will step backwards to find the last
10456        * focusable row.
10457        */
10458       cursor_tree = start_cursor_tree;
10459       cursor_node = start_cursor_node;
10460       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10461
10462       search_first_focusable_path (tree_view, &cursor_path,
10463                                    (count == -1),
10464                                    &cursor_tree, &cursor_node);
10465     }
10466
10467   if (!cursor_path)
10468     goto cleanup;
10469
10470   /* update y */
10471   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10472
10473   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10474
10475   y -= window_y;
10476   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10477   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10478   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10479
10480   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10481     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10482
10483   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10484
10485 cleanup:
10486   gtk_tree_path_free (old_cursor_path);
10487   gtk_tree_path_free (cursor_path);
10488 }
10489
10490 static void
10491 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10492                                       gint         count)
10493 {
10494   GtkTreePath *cursor_path = NULL;
10495   GtkTreeViewColumn *column;
10496   GtkTreeIter iter;
10497   GList *list;
10498   gboolean found_column = FALSE;
10499   gboolean rtl;
10500   GtkDirectionType direction;
10501   GtkCellArea     *cell_area;
10502   GtkCellRenderer *last_focus_cell = NULL;
10503   GtkCellArea     *last_focus_area = NULL;
10504
10505   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10506
10507   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10508     return;
10509
10510   if (tree_view->priv->cursor_node == NULL)
10511     return;
10512
10513   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10514                                                 tree_view->priv->cursor_node);
10515
10516   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10517     {
10518       gtk_tree_path_free (cursor_path);
10519       return;
10520     }
10521   gtk_tree_path_free (cursor_path);
10522
10523   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10524   if (tree_view->priv->focus_column)
10525     {
10526       /* Save the cell/area we are moving focus from, if moving the cursor
10527        * by one step hits the end we'll set focus back here */
10528       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10529       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10530
10531       for (; list; list = (rtl ? list->prev : list->next))
10532         {
10533           if (list->data == tree_view->priv->focus_column)
10534             break;
10535         }
10536     }
10537
10538   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10539
10540   while (list)
10541     {
10542       column = list->data;
10543       if (gtk_tree_view_column_get_visible (column) == FALSE)
10544         goto loop_end;
10545
10546       gtk_tree_view_column_cell_set_cell_data (column,
10547                                                tree_view->priv->model,
10548                                                &iter,
10549                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10550                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10551
10552       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10553       if (gtk_cell_area_focus (cell_area, direction))
10554         {
10555           _gtk_tree_view_set_focus_column (tree_view, column);
10556           found_column = TRUE;
10557           break;
10558         }
10559
10560     loop_end:
10561       if (count == 1)
10562         list = rtl ? list->prev : list->next;
10563       else
10564         list = rtl ? list->next : list->prev;
10565     }
10566
10567   if (found_column)
10568     {
10569       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10570         _gtk_tree_view_queue_draw_node (tree_view,
10571                                         tree_view->priv->cursor_tree,
10572                                         tree_view->priv->cursor_node,
10573                                         NULL);
10574       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10575       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10576     }
10577   else
10578     {
10579       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10580
10581       if (last_focus_area)
10582         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10583     }
10584
10585   gtk_tree_view_clamp_column_visible (tree_view,
10586                                       tree_view->priv->focus_column, TRUE);
10587 }
10588
10589 static void
10590 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10591                                      gint         count)
10592 {
10593   GtkRBTree *cursor_tree;
10594   GtkRBNode *cursor_node;
10595   GtkTreePath *path;
10596   GtkTreePath *old_path;
10597
10598   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10599     return;
10600
10601   g_return_if_fail (tree_view->priv->tree != NULL);
10602
10603   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10604
10605   cursor_tree = tree_view->priv->tree;
10606
10607   if (count == -1)
10608     {
10609       cursor_node = _gtk_rbtree_first (cursor_tree);
10610
10611       /* Now go forward to find the first focusable row. */
10612       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10613       search_first_focusable_path (tree_view, &path,
10614                                    TRUE, &cursor_tree, &cursor_node);
10615     }
10616   else
10617     {
10618       cursor_node = cursor_tree->root;
10619
10620       do
10621         {
10622           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10623             cursor_node = cursor_node->right;
10624           if (cursor_node->children == NULL)
10625             break;
10626
10627           cursor_tree = cursor_node->children;
10628           cursor_node = cursor_tree->root;
10629         }
10630       while (1);
10631
10632       /* Now go backwards to find last focusable row. */
10633       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10634       search_first_focusable_path (tree_view, &path,
10635                                    FALSE, &cursor_tree, &cursor_node);
10636     }
10637
10638   if (!path)
10639     goto cleanup;
10640
10641   if (gtk_tree_path_compare (old_path, path))
10642     {
10643       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10644       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10645     }
10646   else
10647     {
10648       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10649     }
10650
10651 cleanup:
10652   gtk_tree_path_free (old_path);
10653   gtk_tree_path_free (path);
10654 }
10655
10656 static gboolean
10657 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10658 {
10659   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10660     return FALSE;
10661
10662   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10663     return FALSE;
10664
10665   gtk_tree_selection_select_all (tree_view->priv->selection);
10666
10667   return TRUE;
10668 }
10669
10670 static gboolean
10671 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10672 {
10673   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10674     return FALSE;
10675
10676   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10677     return FALSE;
10678
10679   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10680
10681   return TRUE;
10682 }
10683
10684 static gboolean
10685 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10686                                       gboolean     start_editing)
10687 {
10688   GtkRBTree *new_tree = NULL;
10689   GtkRBNode *new_node = NULL;
10690   GtkRBTree *cursor_tree = NULL;
10691   GtkRBNode *cursor_node = NULL;
10692   GtkTreePath *cursor_path = NULL;
10693   GtkTreeSelectMode mode = 0;
10694
10695   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10696     return FALSE;
10697
10698   if (tree_view->priv->cursor_node == NULL)
10699     return FALSE;
10700
10701   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10702                                                 tree_view->priv->cursor_node);
10703
10704   _gtk_tree_view_find_node (tree_view, cursor_path,
10705                             &cursor_tree, &cursor_node);
10706
10707   if (cursor_tree == NULL)
10708     {
10709       gtk_tree_path_free (cursor_path);
10710       return FALSE;
10711     }
10712
10713   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10714       tree_view->priv->focus_column)
10715     {
10716       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10717         {
10718           gtk_tree_path_free (cursor_path);
10719           return TRUE;
10720         }
10721     }
10722
10723   if (tree_view->priv->modify_selection_pressed)
10724     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10725   if (tree_view->priv->extend_selection_pressed)
10726     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10727
10728   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10729                                             cursor_node,
10730                                             cursor_tree,
10731                                             cursor_path,
10732                                             mode,
10733                                             FALSE);
10734
10735   /* We bail out if the original (tree, node) don't exist anymore after
10736    * handling the selection-changed callback.  We do return TRUE because
10737    * the key press has been handled at this point.
10738    */
10739   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10740
10741   if (cursor_tree != new_tree || cursor_node != new_node)
10742     return FALSE;
10743
10744   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10745
10746   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10747   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10748
10749   if (!tree_view->priv->extend_selection_pressed)
10750     gtk_tree_view_row_activated (tree_view, cursor_path,
10751                                  tree_view->priv->focus_column);
10752
10753   gtk_tree_path_free (cursor_path);
10754
10755   return TRUE;
10756 }
10757
10758 static gboolean
10759 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10760 {
10761   GtkRBTree *new_tree = NULL;
10762   GtkRBNode *new_node = NULL;
10763   GtkTreePath *cursor_path = NULL;
10764
10765   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10766     return FALSE;
10767
10768   if (tree_view->priv->cursor_node == NULL)
10769     return FALSE;
10770
10771   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10772                                                 tree_view->priv->cursor_node);
10773
10774   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10775                                             tree_view->priv->cursor_node,
10776                                             tree_view->priv->cursor_tree,
10777                                             cursor_path,
10778                                             GTK_TREE_SELECT_MODE_TOGGLE,
10779                                             FALSE);
10780
10781   /* We bail out if the original (tree, node) don't exist anymore after
10782    * handling the selection-changed callback.  We do return TRUE because
10783    * the key press has been handled at this point.
10784    */
10785   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10786
10787   if (tree_view->priv->cursor_node != new_node)
10788     return FALSE;
10789
10790   gtk_tree_view_clamp_node_visible (tree_view,
10791                                     tree_view->priv->cursor_tree,
10792                                     tree_view->priv->cursor_node);
10793
10794   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10795   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10796   gtk_tree_path_free (cursor_path);
10797
10798   return TRUE;
10799 }
10800
10801 static gboolean
10802 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10803                                                gboolean     logical,
10804                                                gboolean     expand,
10805                                                gboolean     open_all)
10806 {
10807   GtkTreePath *cursor_path = NULL;
10808
10809   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10810     return FALSE;
10811
10812   if (tree_view->priv->cursor_node == NULL)
10813     return FALSE;
10814
10815   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10816                                                 tree_view->priv->cursor_node);
10817
10818   /* Don't handle the event if we aren't an expander */
10819   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10820     return FALSE;
10821
10822   if (!logical
10823       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10824     expand = !expand;
10825
10826   if (expand)
10827     gtk_tree_view_real_expand_row (tree_view,
10828                                    cursor_path,
10829                                    tree_view->priv->cursor_tree,
10830                                    tree_view->priv->cursor_node,
10831                                    open_all,
10832                                    TRUE);
10833   else
10834     gtk_tree_view_real_collapse_row (tree_view,
10835                                      cursor_path,
10836                                      tree_view->priv->cursor_tree,
10837                                      tree_view->priv->cursor_node,
10838                                      TRUE);
10839
10840   gtk_tree_path_free (cursor_path);
10841
10842   return TRUE;
10843 }
10844
10845 static gboolean
10846 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10847 {
10848   GtkTreePath *cursor_path = NULL;
10849   GdkModifierType state;
10850
10851   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10852     goto out;
10853
10854   if (tree_view->priv->cursor_node == NULL)
10855     goto out;
10856
10857   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10858                                                 tree_view->priv->cursor_node);
10859
10860   if (tree_view->priv->cursor_tree->parent_node)
10861     {
10862       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10863
10864       gtk_tree_path_up (cursor_path);
10865
10866       if (gtk_get_current_event_state (&state))
10867         {
10868           GdkModifierType modify_mod_mask;
10869
10870           modify_mod_mask =
10871             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10872                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10873
10874           if ((state & modify_mod_mask) == modify_mod_mask)
10875             tree_view->priv->modify_selection_pressed = TRUE;
10876         }
10877
10878       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10879       gtk_tree_path_free (cursor_path);
10880
10881       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10882
10883       tree_view->priv->modify_selection_pressed = FALSE;
10884
10885       return TRUE;
10886     }
10887
10888  out:
10889
10890   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10891   return FALSE;
10892 }
10893
10894 static gboolean
10895 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10896 {
10897   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10898   tree_view->priv->typeselect_flush_timeout = 0;
10899
10900   return FALSE;
10901 }
10902
10903 /* Cut and paste from gtkwindow.c */
10904 static void
10905 send_focus_change (GtkWidget *widget,
10906                    GdkDevice *device,
10907                    gboolean   in)
10908 {
10909   GdkDeviceManager *device_manager;
10910   GList *devices, *d;
10911
10912   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10913   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10914   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10915   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10916
10917   for (d = devices; d; d = d->next)
10918     {
10919       GdkDevice *dev = d->data;
10920       GdkEvent *fevent;
10921       GdkWindow *window;
10922
10923       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10924         continue;
10925
10926       window = gtk_widget_get_window (widget);
10927
10928       /* Skip non-master keyboards that haven't
10929        * selected for events from this window
10930        */
10931       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10932           !gdk_window_get_device_events (window, dev))
10933         continue;
10934
10935       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10936
10937       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10938       fevent->focus_change.window = g_object_ref (window);
10939       fevent->focus_change.in = in;
10940       gdk_event_set_device (fevent, device);
10941
10942       gtk_widget_send_focus_change (widget, fevent);
10943
10944       gdk_event_free (fevent);
10945     }
10946
10947   g_list_free (devices);
10948 }
10949
10950 static void
10951 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10952 {
10953   GtkWidget *frame, *vbox, *toplevel;
10954   GdkScreen *screen;
10955
10956   if (tree_view->priv->search_custom_entry_set)
10957     return;
10958
10959   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10960   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10961
10962    if (tree_view->priv->search_window != NULL)
10963      {
10964        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10965          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10966                                       GTK_WINDOW (tree_view->priv->search_window));
10967        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10968          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10969                                          GTK_WINDOW (tree_view->priv->search_window));
10970
10971        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10972
10973        return;
10974      }
10975
10976   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10977   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10978
10979   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10980     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10981                                  GTK_WINDOW (tree_view->priv->search_window));
10982
10983   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10984                             GDK_WINDOW_TYPE_HINT_UTILITY);
10985   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10986   g_signal_connect (tree_view->priv->search_window, "delete-event",
10987                     G_CALLBACK (gtk_tree_view_search_delete_event),
10988                     tree_view);
10989   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10990                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10991                     tree_view);
10992   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10993                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10994                     tree_view);
10995   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10996                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10997                     tree_view);
10998
10999   frame = gtk_frame_new (NULL);
11000   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
11001   gtk_widget_show (frame);
11002   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
11003
11004   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
11005   gtk_widget_show (vbox);
11006   gtk_container_add (GTK_CONTAINER (frame), vbox);
11007   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
11008
11009   /* add entry */
11010   tree_view->priv->search_entry = gtk_entry_new ();
11011   gtk_widget_show (tree_view->priv->search_entry);
11012   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
11013                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
11014                     tree_view);
11015   g_signal_connect (tree_view->priv->search_entry,
11016                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
11017                     tree_view);
11018
11019   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
11020                     "preedit-changed",
11021                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
11022                     tree_view);
11023
11024   gtk_container_add (GTK_CONTAINER (vbox),
11025                      tree_view->priv->search_entry);
11026
11027   gtk_widget_realize (tree_view->priv->search_entry);
11028 }
11029
11030 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
11031  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
11032  */
11033 static gboolean
11034 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11035                                              GdkDevice   *device,
11036                                              gboolean     keybinding)
11037 {
11038   /* We only start interactive search if we have focus or the columns
11039    * have focus.  If one of our children have focus, we don't want to
11040    * start the search.
11041    */
11042   GList *list;
11043   gboolean found_focus = FALSE;
11044   GtkWidgetClass *entry_parent_class;
11045
11046   if (!tree_view->priv->enable_search && !keybinding)
11047     return FALSE;
11048
11049   if (tree_view->priv->search_custom_entry_set)
11050     return FALSE;
11051
11052   if (tree_view->priv->search_window != NULL &&
11053       gtk_widget_get_visible (tree_view->priv->search_window))
11054     return TRUE;
11055
11056   for (list = tree_view->priv->columns; list; list = list->next)
11057     {
11058       GtkTreeViewColumn *column;
11059       GtkWidget         *button;
11060
11061       column = list->data;
11062       if (!gtk_tree_view_column_get_visible (column))
11063         continue;
11064
11065       button = gtk_tree_view_column_get_button (column);
11066       if (gtk_widget_has_focus (button))
11067         {
11068           found_focus = TRUE;
11069           break;
11070         }
11071     }
11072
11073   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11074     found_focus = TRUE;
11075
11076   if (!found_focus)
11077     return FALSE;
11078
11079   if (tree_view->priv->search_column < 0)
11080     return FALSE;
11081
11082   gtk_tree_view_ensure_interactive_directory (tree_view);
11083
11084   if (keybinding)
11085     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11086
11087   /* done, show it */
11088   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11089   gtk_widget_show (tree_view->priv->search_window);
11090   if (tree_view->priv->search_entry_changed_id == 0)
11091     {
11092       tree_view->priv->search_entry_changed_id =
11093         g_signal_connect (tree_view->priv->search_entry, "changed",
11094                           G_CALLBACK (gtk_tree_view_search_init),
11095                           tree_view);
11096     }
11097
11098   tree_view->priv->typeselect_flush_timeout =
11099     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11100                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11101                    tree_view);
11102
11103   /* Grab focus will select all the text.  We don't want that to happen, so we
11104    * call the parent instance and bypass the selection change.  This is probably
11105    * really non-kosher. */
11106   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11107   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11108
11109   /* send focus-in event */
11110   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11111
11112   /* search first matching iter */
11113   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11114
11115   return TRUE;
11116 }
11117
11118 static gboolean
11119 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11120 {
11121   return gtk_tree_view_real_start_interactive_search (tree_view,
11122                                                       gtk_get_current_event_device (),
11123                                                       TRUE);
11124 }
11125
11126 /* this function returns the new width of the column being resized given
11127  * the column and x position of the cursor; the x cursor position is passed
11128  * in as a pointer and automagicly corrected if it's beyond min/max limits
11129  */
11130 static gint
11131 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11132                                 gint       i,
11133                                 gint      *x)
11134 {
11135   GtkAllocation allocation;
11136   GtkTreeViewColumn *column;
11137   GtkRequisition button_req;
11138   gint max_width, min_width;
11139   gint width;
11140   gboolean rtl;
11141
11142   /* first translate the x position from widget->window
11143    * to clist->clist_window
11144    */
11145   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11146   column = g_list_nth (tree_view->priv->columns, i)->data;
11147   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11148   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11149
11150   /* Clamp down the value */
11151   min_width = gtk_tree_view_column_get_min_width (column);
11152   if (min_width == -1)
11153     {
11154       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11155       width = MAX (button_req.width, width);
11156     }
11157   else
11158     width = MAX (min_width, width);
11159
11160   max_width = gtk_tree_view_column_get_max_width (column);
11161   if (max_width != -1)
11162     width = MIN (width, max_width);
11163
11164   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11165
11166   return width;
11167 }
11168
11169
11170 /* FIXME this adjust_allocation is a big cut-and-paste from
11171  * GtkCList, needs to be some "official" way to do this
11172  * factored out.
11173  */
11174 typedef struct
11175 {
11176   GdkWindow *window;
11177   int dx;
11178   int dy;
11179 } ScrollData;
11180
11181 /* The window to which widget->window is relative */
11182 #define ALLOCATION_WINDOW(widget)               \
11183    (!gtk_widget_get_has_window (widget) ?                   \
11184     gtk_widget_get_window (widget) :                        \
11185     gdk_window_get_parent (gtk_widget_get_window (widget)))
11186
11187 static void
11188 adjust_allocation_recurse (GtkWidget *widget,
11189                            gpointer   data)
11190 {
11191   GtkAllocation allocation;
11192   ScrollData *scroll_data = data;
11193
11194   /* Need to really size allocate instead of just poking
11195    * into widget->allocation if the widget is not realized.
11196    * FIXME someone figure out why this was.
11197    */
11198   gtk_widget_get_allocation (widget, &allocation);
11199   if (!gtk_widget_get_realized (widget))
11200     {
11201       if (gtk_widget_get_visible (widget))
11202         {
11203           GdkRectangle tmp_rectangle = allocation;
11204           tmp_rectangle.x += scroll_data->dx;
11205           tmp_rectangle.y += scroll_data->dy;
11206
11207           gtk_widget_size_allocate (widget, &tmp_rectangle);
11208         }
11209     }
11210   else
11211     {
11212       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11213         {
11214           allocation.x += scroll_data->dx;
11215           allocation.y += scroll_data->dy;
11216           gtk_widget_set_allocation (widget, &allocation);
11217
11218           if (GTK_IS_CONTAINER (widget))
11219             gtk_container_forall (GTK_CONTAINER (widget),
11220                                   adjust_allocation_recurse,
11221                                   data);
11222         }
11223     }
11224 }
11225
11226 static void
11227 adjust_allocation (GtkWidget *widget,
11228                    int        dx,
11229                    int        dy)
11230 {
11231   ScrollData scroll_data;
11232
11233   if (gtk_widget_get_realized (widget))
11234     scroll_data.window = ALLOCATION_WINDOW (widget);
11235   else
11236     scroll_data.window = NULL;
11237
11238   scroll_data.dx = dx;
11239   scroll_data.dy = dy;
11240
11241   adjust_allocation_recurse (widget, &scroll_data);
11242 }
11243
11244 /* Callbacks */
11245 static void
11246 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11247                                   GtkTreeView   *tree_view)
11248 {
11249   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11250     {
11251       gint dy;
11252
11253       gdk_window_move (tree_view->priv->bin_window,
11254                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11255                        gtk_tree_view_get_effective_header_height (tree_view));
11256       gdk_window_move (tree_view->priv->header_window,
11257                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11258                        0);
11259       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11260       if (dy)
11261         {
11262           update_prelight (tree_view,
11263                            tree_view->priv->event_last_x,
11264                            tree_view->priv->event_last_y - dy);
11265
11266           if (tree_view->priv->edited_column)
11267             {
11268               GList *list;
11269               GtkTreeViewChild *child = NULL;
11270               GtkCellEditable *edit_widget;
11271               GtkCellArea *area;
11272
11273               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11274               edit_widget = gtk_cell_area_get_edit_widget (area);
11275               if (GTK_IS_WIDGET (edit_widget))
11276                 {
11277                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11278
11279                   for (list = tree_view->priv->children; list; list = list->next)
11280                     {
11281                       child = (GtkTreeViewChild *)list->data;
11282                       if (child->widget == GTK_WIDGET (edit_widget))
11283                         {
11284                           child->y += dy;
11285                           break;
11286                         }
11287                     }
11288                 }
11289             }
11290         }
11291       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11292
11293       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11294         {
11295           /* update our dy and top_row */
11296           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11297
11298           if (!tree_view->priv->in_top_row_to_dy)
11299             gtk_tree_view_dy_to_top_row (tree_view);
11300         }
11301     }
11302 }
11303
11304 \f
11305
11306 /* Public methods
11307  */
11308
11309 /**
11310  * gtk_tree_view_new:
11311  *
11312  * Creates a new #GtkTreeView widget.
11313  *
11314  * Return value: A newly created #GtkTreeView widget.
11315  **/
11316 GtkWidget *
11317 gtk_tree_view_new (void)
11318 {
11319   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11320 }
11321
11322 /**
11323  * gtk_tree_view_new_with_model:
11324  * @model: the model.
11325  *
11326  * Creates a new #GtkTreeView widget with the model initialized to @model.
11327  *
11328  * Return value: A newly created #GtkTreeView widget.
11329  **/
11330 GtkWidget *
11331 gtk_tree_view_new_with_model (GtkTreeModel *model)
11332 {
11333   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11334 }
11335
11336 /* Public Accessors
11337  */
11338
11339 /**
11340  * gtk_tree_view_get_model:
11341  * @tree_view: a #GtkTreeView
11342  *
11343  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11344  * model is unset.
11345  *
11346  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11347  **/
11348 GtkTreeModel *
11349 gtk_tree_view_get_model (GtkTreeView *tree_view)
11350 {
11351   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11352
11353   return tree_view->priv->model;
11354 }
11355
11356 /**
11357  * gtk_tree_view_set_model:
11358  * @tree_view: A #GtkTreeView.
11359  * @model: (allow-none): The model.
11360  *
11361  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11362  * set, it will remove it before setting the new model.  If @model is %NULL,
11363  * then it will unset the old model.
11364  **/
11365 void
11366 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11367                          GtkTreeModel *model)
11368 {
11369   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11370   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11371
11372   if (model == tree_view->priv->model)
11373     return;
11374
11375   if (tree_view->priv->scroll_to_path)
11376     {
11377       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11378       tree_view->priv->scroll_to_path = NULL;
11379     }
11380
11381   if (tree_view->priv->rubber_band_status)
11382     gtk_tree_view_stop_rubber_band (tree_view);
11383
11384   if (tree_view->priv->model)
11385     {
11386       GList *tmplist = tree_view->priv->columns;
11387
11388       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11389       gtk_tree_view_stop_editing (tree_view, TRUE);
11390
11391       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11392                                             gtk_tree_view_row_changed,
11393                                             tree_view);
11394       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11395                                             gtk_tree_view_row_inserted,
11396                                             tree_view);
11397       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11398                                             gtk_tree_view_row_has_child_toggled,
11399                                             tree_view);
11400       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11401                                             gtk_tree_view_row_deleted,
11402                                             tree_view);
11403       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11404                                             gtk_tree_view_rows_reordered,
11405                                             tree_view);
11406
11407       for (; tmplist; tmplist = tmplist->next)
11408         _gtk_tree_view_column_unset_model (tmplist->data,
11409                                            tree_view->priv->model);
11410
11411       if (tree_view->priv->tree)
11412         gtk_tree_view_free_rbtree (tree_view);
11413
11414       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11415       tree_view->priv->drag_dest_row = NULL;
11416       gtk_tree_row_reference_free (tree_view->priv->anchor);
11417       tree_view->priv->anchor = NULL;
11418       gtk_tree_row_reference_free (tree_view->priv->top_row);
11419       tree_view->priv->top_row = NULL;
11420       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11421       tree_view->priv->scroll_to_path = NULL;
11422
11423       tree_view->priv->scroll_to_column = NULL;
11424
11425       g_object_unref (tree_view->priv->model);
11426
11427       tree_view->priv->search_column = -1;
11428       tree_view->priv->fixed_height_check = 0;
11429       tree_view->priv->fixed_height = -1;
11430       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11431       tree_view->priv->last_button_x = -1;
11432       tree_view->priv->last_button_y = -1;
11433     }
11434
11435   tree_view->priv->model = model;
11436
11437   if (tree_view->priv->model)
11438     {
11439       gint i;
11440       GtkTreePath *path;
11441       GtkTreeIter iter;
11442       GtkTreeModelFlags flags;
11443
11444       if (tree_view->priv->search_column == -1)
11445         {
11446           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11447             {
11448               GType type = gtk_tree_model_get_column_type (model, i);
11449
11450               if (g_value_type_transformable (type, G_TYPE_STRING))
11451                 {
11452                   tree_view->priv->search_column = i;
11453                   break;
11454                 }
11455             }
11456         }
11457
11458       g_object_ref (tree_view->priv->model);
11459       g_signal_connect (tree_view->priv->model,
11460                         "row-changed",
11461                         G_CALLBACK (gtk_tree_view_row_changed),
11462                         tree_view);
11463       g_signal_connect (tree_view->priv->model,
11464                         "row-inserted",
11465                         G_CALLBACK (gtk_tree_view_row_inserted),
11466                         tree_view);
11467       g_signal_connect (tree_view->priv->model,
11468                         "row-has-child-toggled",
11469                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11470                         tree_view);
11471       g_signal_connect (tree_view->priv->model,
11472                         "row-deleted",
11473                         G_CALLBACK (gtk_tree_view_row_deleted),
11474                         tree_view);
11475       g_signal_connect (tree_view->priv->model,
11476                         "rows-reordered",
11477                         G_CALLBACK (gtk_tree_view_rows_reordered),
11478                         tree_view);
11479
11480       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11481       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11482         tree_view->priv->is_list = TRUE;
11483       else
11484         tree_view->priv->is_list = FALSE;
11485
11486       path = gtk_tree_path_new_first ();
11487       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11488         {
11489           tree_view->priv->tree = _gtk_rbtree_new ();
11490           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11491           _gtk_tree_view_accessible_add (tree_view, tree_view->priv->tree, NULL);
11492         }
11493       gtk_tree_path_free (path);
11494
11495       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11496       install_presize_handler (tree_view);
11497     }
11498
11499   gtk_tree_view_real_set_cursor (tree_view, NULL, CURSOR_INVALID);
11500
11501   g_object_notify (G_OBJECT (tree_view), "model");
11502
11503   if (tree_view->priv->selection)
11504   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11505
11506   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11507     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11508 }
11509
11510 /**
11511  * gtk_tree_view_get_selection:
11512  * @tree_view: A #GtkTreeView.
11513  *
11514  * Gets the #GtkTreeSelection associated with @tree_view.
11515  *
11516  * Return value: (transfer none): A #GtkTreeSelection object.
11517  **/
11518 GtkTreeSelection *
11519 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11520 {
11521   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11522
11523   return tree_view->priv->selection;
11524 }
11525
11526 /**
11527  * gtk_tree_view_get_hadjustment:
11528  * @tree_view: A #GtkTreeView
11529  *
11530  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11531  *
11532  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11533  *     if none is currently being used.
11534  *
11535  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11536  **/
11537 GtkAdjustment *
11538 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11539 {
11540   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11541
11542   return gtk_tree_view_do_get_hadjustment (tree_view);
11543 }
11544
11545 static GtkAdjustment *
11546 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11547 {
11548   return tree_view->priv->hadjustment;
11549 }
11550
11551 /**
11552  * gtk_tree_view_set_hadjustment:
11553  * @tree_view: A #GtkTreeView
11554  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11555  *
11556  * Sets the #GtkAdjustment for the current horizontal aspect.
11557  *
11558  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11559  **/
11560 void
11561 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11562                                GtkAdjustment *adjustment)
11563 {
11564   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11565   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11566
11567   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11568 }
11569
11570 static void
11571 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11572                                   GtkAdjustment *adjustment)
11573 {
11574   GtkTreeViewPrivate *priv = tree_view->priv;
11575
11576   if (adjustment && priv->hadjustment == adjustment)
11577     return;
11578
11579   if (priv->hadjustment != NULL)
11580     {
11581       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11582                                             gtk_tree_view_adjustment_changed,
11583                                             tree_view);
11584       g_object_unref (priv->hadjustment);
11585     }
11586
11587   if (adjustment == NULL)
11588     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11589                                      0.0, 0.0, 0.0);
11590
11591   g_signal_connect (adjustment, "value-changed",
11592                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11593   priv->hadjustment = g_object_ref_sink (adjustment);
11594   /* FIXME: Adjustment should probably be populated here with fresh values, but
11595    * internal details are too complicated for me to decipher right now.
11596    */
11597   gtk_tree_view_adjustment_changed (NULL, tree_view);
11598
11599   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11600 }
11601
11602 /**
11603  * gtk_tree_view_get_vadjustment:
11604  * @tree_view: A #GtkTreeView
11605  *
11606  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11607  *
11608  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11609  *     if none is currently being used.
11610  *
11611  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11612  **/
11613 GtkAdjustment *
11614 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11615 {
11616   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11617
11618   return gtk_tree_view_do_get_vadjustment (tree_view);
11619 }
11620
11621 static GtkAdjustment *
11622 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11623 {
11624   return tree_view->priv->vadjustment;
11625 }
11626
11627 /**
11628  * gtk_tree_view_set_vadjustment:
11629  * @tree_view: A #GtkTreeView
11630  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11631  *
11632  * Sets the #GtkAdjustment for the current vertical aspect.
11633  *
11634  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11635  **/
11636 void
11637 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11638                                GtkAdjustment *adjustment)
11639 {
11640   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11641   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11642
11643   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11644 }
11645
11646 static void
11647 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11648                                   GtkAdjustment *adjustment)
11649 {
11650   GtkTreeViewPrivate *priv = tree_view->priv;
11651
11652   if (adjustment && priv->vadjustment == adjustment)
11653     return;
11654
11655   if (priv->vadjustment != NULL)
11656     {
11657       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11658                                             gtk_tree_view_adjustment_changed,
11659                                             tree_view);
11660       g_object_unref (priv->vadjustment);
11661     }
11662
11663   if (adjustment == NULL)
11664     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11665                                      0.0, 0.0, 0.0);
11666
11667   g_signal_connect (adjustment, "value-changed",
11668                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11669   priv->vadjustment = g_object_ref_sink (adjustment);
11670   /* FIXME: Adjustment should probably be populated here with fresh values, but
11671    * internal details are too complicated for me to decipher right now.
11672    */
11673   gtk_tree_view_adjustment_changed (NULL, tree_view);
11674   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11675 }
11676
11677 /* Column and header operations */
11678
11679 /**
11680  * gtk_tree_view_get_headers_visible:
11681  * @tree_view: A #GtkTreeView.
11682  *
11683  * Returns %TRUE if the headers on the @tree_view are visible.
11684  *
11685  * Return value: Whether the headers are visible or not.
11686  **/
11687 gboolean
11688 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11689 {
11690   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11691
11692   return tree_view->priv->headers_visible;
11693 }
11694
11695 /**
11696  * gtk_tree_view_set_headers_visible:
11697  * @tree_view: A #GtkTreeView.
11698  * @headers_visible: %TRUE if the headers are visible
11699  *
11700  * Sets the visibility state of the headers.
11701  **/
11702 void
11703 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11704                                    gboolean     headers_visible)
11705 {
11706   gint x, y;
11707   GList *list;
11708   GtkTreeViewColumn *column;
11709   GtkAllocation allocation;
11710   GtkWidget *button;
11711
11712   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11713
11714   headers_visible = !! headers_visible;
11715
11716   if (tree_view->priv->headers_visible == headers_visible)
11717     return;
11718
11719   tree_view->priv->headers_visible = headers_visible == TRUE;
11720
11721   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11722     {
11723       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11724       if (headers_visible)
11725         {
11726           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11727           gdk_window_move_resize (tree_view->priv->bin_window,
11728                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11729                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11730
11731           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11732             gtk_tree_view_map_buttons (tree_view);
11733         }
11734       else
11735         {
11736           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11737
11738           for (list = tree_view->priv->columns; list; list = list->next)
11739             {
11740               column = list->data;
11741               button = gtk_tree_view_column_get_button (column);
11742
11743               gtk_widget_hide (button);
11744               gtk_widget_unmap (button);
11745             }
11746           gdk_window_hide (tree_view->priv->header_window);
11747         }
11748     }
11749
11750   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11751   gtk_adjustment_configure (tree_view->priv->vadjustment,
11752                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11753                             0,
11754                             tree_view->priv->height,
11755                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11756                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11757                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11758
11759   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11760
11761   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11762 }
11763
11764 /**
11765  * gtk_tree_view_columns_autosize:
11766  * @tree_view: A #GtkTreeView.
11767  *
11768  * Resizes all columns to their optimal width. Only works after the
11769  * treeview has been realized.
11770  **/
11771 void
11772 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11773 {
11774   gboolean dirty = FALSE;
11775   GList *list;
11776   GtkTreeViewColumn *column;
11777
11778   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11779
11780   for (list = tree_view->priv->columns; list; list = list->next)
11781     {
11782       column = list->data;
11783       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11784         continue;
11785       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11786       dirty = TRUE;
11787     }
11788
11789   if (dirty)
11790     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11791 }
11792
11793 /**
11794  * gtk_tree_view_set_headers_clickable:
11795  * @tree_view: A #GtkTreeView.
11796  * @setting: %TRUE if the columns are clickable.
11797  *
11798  * Allow the column title buttons to be clicked.
11799  **/
11800 void
11801 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11802                                      gboolean   setting)
11803 {
11804   GList *list;
11805
11806   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11807
11808   for (list = tree_view->priv->columns; list; list = list->next)
11809     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11810
11811   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11812 }
11813
11814
11815 /**
11816  * gtk_tree_view_get_headers_clickable:
11817  * @tree_view: A #GtkTreeView.
11818  *
11819  * Returns whether all header columns are clickable.
11820  *
11821  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11822  *
11823  * Since: 2.10
11824  **/
11825 gboolean
11826 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11827 {
11828   GList *list;
11829
11830   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11831
11832   for (list = tree_view->priv->columns; list; list = list->next)
11833     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11834       return FALSE;
11835
11836   return TRUE;
11837 }
11838
11839 /**
11840  * gtk_tree_view_set_rules_hint:
11841  * @tree_view: a #GtkTreeView
11842  * @setting: %TRUE if the tree requires reading across rows
11843  *
11844  * This function tells GTK+ that the user interface for your
11845  * application requires users to read across tree rows and associate
11846  * cells with one another. By default, GTK+ will then render the tree
11847  * with alternating row colors. Do <emphasis>not</emphasis> use it
11848  * just because you prefer the appearance of the ruled tree; that's a
11849  * question for the theme. Some themes will draw tree rows in
11850  * alternating colors even when rules are turned off, and users who
11851  * prefer that appearance all the time can choose those themes. You
11852  * should call this function only as a <emphasis>semantic</emphasis>
11853  * hint to the theme engine that your tree makes alternating colors
11854  * useful from a functional standpoint (since it has lots of columns,
11855  * generally).
11856  *
11857  **/
11858 void
11859 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11860                               gboolean      setting)
11861 {
11862   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11863
11864   setting = setting != FALSE;
11865
11866   if (tree_view->priv->has_rules != setting)
11867     {
11868       tree_view->priv->has_rules = setting;
11869       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11870     }
11871
11872   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11873 }
11874
11875 /**
11876  * gtk_tree_view_get_rules_hint:
11877  * @tree_view: a #GtkTreeView
11878  *
11879  * Gets the setting set by gtk_tree_view_set_rules_hint().
11880  *
11881  * Return value: %TRUE if rules are useful for the user of this tree
11882  **/
11883 gboolean
11884 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11885 {
11886   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11887
11888   return tree_view->priv->has_rules;
11889 }
11890
11891 /* Public Column functions
11892  */
11893
11894 /**
11895  * gtk_tree_view_append_column:
11896  * @tree_view: A #GtkTreeView.
11897  * @column: The #GtkTreeViewColumn to add.
11898  *
11899  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11900  * mode enabled, then @column must have its "sizing" property set to be
11901  * GTK_TREE_VIEW_COLUMN_FIXED.
11902  *
11903  * Return value: The number of columns in @tree_view after appending.
11904  **/
11905 gint
11906 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11907                              GtkTreeViewColumn *column)
11908 {
11909   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11910   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11911   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11912
11913   return gtk_tree_view_insert_column (tree_view, column, -1);
11914 }
11915
11916 void
11917 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11918 {
11919   GList *columns;
11920
11921   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11922     {
11923       GtkTreeViewColumn *column = columns->data;
11924       GtkWidget *header_widget;
11925
11926       if (!gtk_tree_view_column_get_visible (column))
11927         continue;
11928
11929       header_widget = gtk_tree_view_column_get_widget (column);
11930
11931       if (!header_widget)
11932         header_widget = gtk_tree_view_column_get_button (column);
11933
11934       _gtk_widget_invalidate_style_context (header_widget, GTK_CSS_CHANGE_PARENT_REGION);
11935     }
11936 }
11937
11938
11939 /**
11940  * gtk_tree_view_remove_column:
11941  * @tree_view: A #GtkTreeView.
11942  * @column: The #GtkTreeViewColumn to remove.
11943  *
11944  * Removes @column from @tree_view.
11945  *
11946  * Return value: The number of columns in @tree_view after removing.
11947  **/
11948 gint
11949 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11950                              GtkTreeViewColumn *column)
11951 {
11952   guint position;
11953
11954   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11955   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11956   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11957
11958   if (tree_view->priv->focus_column == column)
11959     _gtk_tree_view_set_focus_column (tree_view, NULL);
11960
11961   if (tree_view->priv->edited_column == column)
11962     {
11963       gtk_tree_view_stop_editing (tree_view, TRUE);
11964
11965       /* no need to, but just to be sure ... */
11966       tree_view->priv->edited_column = NULL;
11967     }
11968
11969   if (tree_view->priv->expander_column == column)
11970     tree_view->priv->expander_column = NULL;
11971
11972   g_signal_handlers_disconnect_by_func (column,
11973                                         G_CALLBACK (column_sizing_notify),
11974                                         tree_view);
11975
11976   _gtk_tree_view_column_unset_tree_view (column);
11977
11978   position = g_list_index (tree_view->priv->columns, column);
11979
11980   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11981   tree_view->priv->n_columns--;
11982
11983   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11984     {
11985       GList *list;
11986
11987       _gtk_tree_view_column_unrealize_button (column);
11988       for (list = tree_view->priv->columns; list; list = list->next)
11989         {
11990           GtkTreeViewColumn *tmp_column;
11991
11992           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11993           if (gtk_tree_view_column_get_visible (tmp_column))
11994             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11995         }
11996
11997       if (tree_view->priv->n_columns == 0 &&
11998           gtk_tree_view_get_headers_visible (tree_view))
11999         gdk_window_hide (tree_view->priv->header_window);
12000
12001       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12002     }
12003
12004   _gtk_tree_view_reset_header_styles (tree_view);
12005
12006   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
12007
12008   g_object_unref (column);
12009   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12010
12011   return tree_view->priv->n_columns;
12012 }
12013
12014 /**
12015  * gtk_tree_view_insert_column:
12016  * @tree_view: A #GtkTreeView.
12017  * @column: The #GtkTreeViewColumn to be inserted.
12018  * @position: The position to insert @column in.
12019  *
12020  * This inserts the @column into the @tree_view at @position.  If @position is
12021  * -1, then the column is inserted at the end. If @tree_view has
12022  * "fixed_height" mode enabled, then @column must have its "sizing" property
12023  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12024  *
12025  * Return value: The number of columns in @tree_view after insertion.
12026  **/
12027 gint
12028 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12029                              GtkTreeViewColumn *column,
12030                              gint               position)
12031 {
12032   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12033   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12034   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12035
12036   if (tree_view->priv->fixed_height_mode)
12037     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12038                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12039
12040   if (position < 0 || position > tree_view->priv->n_columns)
12041     position = tree_view->priv->n_columns;
12042
12043   g_object_ref_sink (column);
12044
12045   if (tree_view->priv->n_columns == 0 &&
12046       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12047       gtk_tree_view_get_headers_visible (tree_view))
12048     {
12049       gdk_window_show (tree_view->priv->header_window);
12050     }
12051
12052   g_signal_connect (column, "notify::sizing",
12053                     G_CALLBACK (column_sizing_notify), tree_view);
12054
12055   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12056                                             column, position);
12057   tree_view->priv->n_columns++;
12058
12059   _gtk_tree_view_column_set_tree_view (column, tree_view);
12060
12061   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12062     {
12063       GList *list;
12064
12065       _gtk_tree_view_column_realize_button (column);
12066
12067       for (list = tree_view->priv->columns; list; list = list->next)
12068         {
12069           column = GTK_TREE_VIEW_COLUMN (list->data);
12070           if (gtk_tree_view_column_get_visible (column))
12071             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12072         }
12073       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12074     }
12075
12076   _gtk_tree_view_reset_header_styles (tree_view);
12077
12078   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12079
12080   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12081
12082   return tree_view->priv->n_columns;
12083 }
12084
12085 /**
12086  * gtk_tree_view_insert_column_with_attributes:
12087  * @tree_view: A #GtkTreeView
12088  * @position: The position to insert the new column in
12089  * @title: The title to set the header to
12090  * @cell: The #GtkCellRenderer
12091  * @...: A %NULL-terminated list of attributes
12092  *
12093  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12094  * @position.  If @position is -1, then the newly created column is inserted at
12095  * the end.  The column is initialized with the attributes given. If @tree_view
12096  * has "fixed_height" mode enabled, then the new column will have its sizing
12097  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12098  *
12099  * Return value: The number of columns in @tree_view after insertion.
12100  **/
12101 gint
12102 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12103                                              gint             position,
12104                                              const gchar     *title,
12105                                              GtkCellRenderer *cell,
12106                                              ...)
12107 {
12108   GtkTreeViewColumn *column;
12109   gchar *attribute;
12110   va_list args;
12111   gint column_id;
12112
12113   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12114
12115   column = gtk_tree_view_column_new ();
12116   if (tree_view->priv->fixed_height_mode)
12117     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12118
12119   gtk_tree_view_column_set_title (column, title);
12120   gtk_tree_view_column_pack_start (column, cell, TRUE);
12121
12122   va_start (args, cell);
12123
12124   attribute = va_arg (args, gchar *);
12125
12126   while (attribute != NULL)
12127     {
12128       column_id = va_arg (args, gint);
12129       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12130       attribute = va_arg (args, gchar *);
12131     }
12132
12133   va_end (args);
12134
12135   return gtk_tree_view_insert_column (tree_view, column, position);
12136 }
12137
12138 /**
12139  * gtk_tree_view_insert_column_with_data_func:
12140  * @tree_view: a #GtkTreeView
12141  * @position: Position to insert, -1 for append
12142  * @title: column title
12143  * @cell: cell renderer for column
12144  * @func: function to set attributes of cell renderer
12145  * @data: data for @func
12146  * @dnotify: destroy notifier for @data
12147  *
12148  * Convenience function that inserts a new column into the #GtkTreeView
12149  * with the given cell renderer and a #GtkTreeCellDataFunc to set cell renderer
12150  * attributes (normally using data from the model). See also
12151  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12152  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12153  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12154  *
12155  * Return value: number of columns in the tree view post-insert
12156  **/
12157 gint
12158 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12159                                              gint                       position,
12160                                              const gchar               *title,
12161                                              GtkCellRenderer           *cell,
12162                                              GtkTreeCellDataFunc        func,
12163                                              gpointer                   data,
12164                                              GDestroyNotify             dnotify)
12165 {
12166   GtkTreeViewColumn *column;
12167
12168   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12169
12170   column = gtk_tree_view_column_new ();
12171   if (tree_view->priv->fixed_height_mode)
12172     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12173
12174   gtk_tree_view_column_set_title (column, title);
12175   gtk_tree_view_column_pack_start (column, cell, TRUE);
12176   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12177
12178   return gtk_tree_view_insert_column (tree_view, column, position);
12179 }
12180
12181 /**
12182  * gtk_tree_view_get_n_columns:
12183  * @tree_view: a #GtkTreeView
12184  *
12185  * Queries the number of columns in the given @tree_view.
12186  *
12187  * Returns: The number of columns in the @tree_view
12188  *
12189  * Since: 3.4
12190  **/
12191 guint
12192 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12193 {
12194   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12195
12196   return tree_view->priv->n_columns;
12197 }
12198
12199 /**
12200  * gtk_tree_view_get_column:
12201  * @tree_view: A #GtkTreeView.
12202  * @n: The position of the column, counting from 0.
12203  *
12204  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12205  *
12206  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12207  *     position is outside the range of columns.
12208  **/
12209 GtkTreeViewColumn *
12210 gtk_tree_view_get_column (GtkTreeView *tree_view,
12211                           gint         n)
12212 {
12213   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12214
12215   if (n < 0 || n >= tree_view->priv->n_columns)
12216     return NULL;
12217
12218   if (tree_view->priv->columns == NULL)
12219     return NULL;
12220
12221   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12222 }
12223
12224 /**
12225  * gtk_tree_view_get_columns:
12226  * @tree_view: A #GtkTreeView
12227  *
12228  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12229  * The returned list must be freed with g_list_free ().
12230  *
12231  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12232  **/
12233 GList *
12234 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12235 {
12236   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12237
12238   return g_list_copy (tree_view->priv->columns);
12239 }
12240
12241 /**
12242  * gtk_tree_view_move_column_after:
12243  * @tree_view: A #GtkTreeView
12244  * @column: The #GtkTreeViewColumn to be moved.
12245  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12246  *
12247  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12248  * @column is placed in the first position.
12249  **/
12250 void
12251 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12252                                  GtkTreeViewColumn *column,
12253                                  GtkTreeViewColumn *base_column)
12254 {
12255   GList *column_list_el, *base_el = NULL;
12256
12257   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12258
12259   column_list_el = g_list_find (tree_view->priv->columns, column);
12260   g_return_if_fail (column_list_el != NULL);
12261
12262   if (base_column)
12263     {
12264       base_el = g_list_find (tree_view->priv->columns, base_column);
12265       g_return_if_fail (base_el != NULL);
12266     }
12267
12268   if (column_list_el->prev == base_el)
12269     return;
12270
12271   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12272   if (base_el == NULL)
12273     {
12274       column_list_el->prev = NULL;
12275       column_list_el->next = tree_view->priv->columns;
12276       if (column_list_el->next)
12277         column_list_el->next->prev = column_list_el;
12278       tree_view->priv->columns = column_list_el;
12279     }
12280   else
12281     {
12282       column_list_el->prev = base_el;
12283       column_list_el->next = base_el->next;
12284       if (column_list_el->next)
12285         column_list_el->next->prev = column_list_el;
12286       base_el->next = column_list_el;
12287     }
12288
12289   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12290     {
12291       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12292       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12293     }
12294
12295   _gtk_tree_view_reset_header_styles (tree_view);
12296
12297   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12298
12299   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12300 }
12301
12302 /**
12303  * gtk_tree_view_set_expander_column:
12304  * @tree_view: A #GtkTreeView
12305  * @column: %NULL, or the column to draw the expander arrow at.
12306  *
12307  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12308  * If @column is %NULL, then the expander arrow is always at the first
12309  * visible column.
12310  *
12311  * If you do not want expander arrow to appear in your tree, set the
12312  * expander column to a hidden column.
12313  **/
12314 void
12315 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12316                                    GtkTreeViewColumn *column)
12317 {
12318   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12319   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12320   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12321
12322   if (tree_view->priv->expander_column != column)
12323     {
12324       tree_view->priv->expander_column = column;
12325       g_object_notify (G_OBJECT (tree_view), "expander-column");
12326     }
12327 }
12328
12329 /**
12330  * gtk_tree_view_get_expander_column:
12331  * @tree_view: A #GtkTreeView
12332  *
12333  * Returns the column that is the current expander column.
12334  * This column has the expander arrow drawn next to it.
12335  *
12336  * Return value: (transfer none): The expander column.
12337  **/
12338 GtkTreeViewColumn *
12339 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12340 {
12341   GList *list;
12342
12343   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12344
12345   for (list = tree_view->priv->columns; list; list = list->next)
12346     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12347       return (GtkTreeViewColumn *) list->data;
12348   return NULL;
12349 }
12350
12351
12352 /**
12353  * gtk_tree_view_set_column_drag_function:
12354  * @tree_view: A #GtkTreeView.
12355  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12356  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12357  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12358  *
12359  * Sets a user function for determining where a column may be dropped when
12360  * dragged.  This function is called on every column pair in turn at the
12361  * beginning of a column drag to determine where a drop can take place.  The
12362  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12363  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12364  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12365  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12366  * @tree_view reverts to the default behavior of allowing all columns to be
12367  * dropped everywhere.
12368  **/
12369 void
12370 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12371                                         GtkTreeViewColumnDropFunc  func,
12372                                         gpointer                   user_data,
12373                                         GDestroyNotify             destroy)
12374 {
12375   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12376
12377   if (tree_view->priv->column_drop_func_data_destroy)
12378     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12379
12380   tree_view->priv->column_drop_func = func;
12381   tree_view->priv->column_drop_func_data = user_data;
12382   tree_view->priv->column_drop_func_data_destroy = destroy;
12383 }
12384
12385 /**
12386  * gtk_tree_view_scroll_to_point:
12387  * @tree_view: a #GtkTreeView
12388  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12389  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12390  *
12391  * Scrolls the tree view such that the top-left corner of the visible
12392  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12393  * in tree coordinates.  The @tree_view must be realized before
12394  * this function is called.  If it isn't, you probably want to be
12395  * using gtk_tree_view_scroll_to_cell().
12396  *
12397  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12398  **/
12399 void
12400 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12401                                gint         tree_x,
12402                                gint         tree_y)
12403 {
12404   GtkAdjustment *hadj;
12405   GtkAdjustment *vadj;
12406
12407   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12408   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12409
12410   hadj = tree_view->priv->hadjustment;
12411   vadj = tree_view->priv->vadjustment;
12412
12413   if (tree_x != -1)
12414     gtk_adjustment_set_value (hadj, tree_x);
12415   if (tree_y != -1)
12416     gtk_adjustment_set_value (vadj, tree_y);
12417 }
12418
12419 /**
12420  * gtk_tree_view_scroll_to_cell:
12421  * @tree_view: A #GtkTreeView.
12422  * @path: (allow-none): The path of the row to move to, or %NULL.
12423  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12424  * @use_align: whether to use alignment arguments, or %FALSE.
12425  * @row_align: The vertical alignment of the row specified by @path.
12426  * @col_align: The horizontal alignment of the column specified by @column.
12427  *
12428  * Moves the alignments of @tree_view to the position specified by @column and
12429  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12430  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12431  * or @path need to be non-%NULL.  @row_align determines where the row is
12432  * placed, and @col_align determines where @column is placed.  Both are expected
12433  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12434  * right/bottom alignment, 0.5 means center.
12435  *
12436  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12437  * tree does the minimum amount of work to scroll the cell onto the screen.
12438  * This means that the cell will be scrolled to the edge closest to its current
12439  * position.  If the cell is currently visible on the screen, nothing is done.
12440  *
12441  * This function only works if the model is set, and @path is a valid row on the
12442  * model.  If the model changes before the @tree_view is realized, the centered
12443  * path will be modified to reflect this change.
12444  **/
12445 void
12446 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12447                               GtkTreePath       *path,
12448                               GtkTreeViewColumn *column,
12449                               gboolean           use_align,
12450                               gfloat             row_align,
12451                               gfloat             col_align)
12452 {
12453   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12454   g_return_if_fail (tree_view->priv->model != NULL);
12455   g_return_if_fail (tree_view->priv->tree != NULL);
12456   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12457   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12458   g_return_if_fail (path != NULL || column != NULL);
12459
12460 #if 0
12461   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12462            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12463 #endif
12464   row_align = CLAMP (row_align, 0.0, 1.0);
12465   col_align = CLAMP (col_align, 0.0, 1.0);
12466
12467
12468   /* Note: Despite the benefits that come from having one code path for the
12469    * scrolling code, we short-circuit validate_visible_area's immplementation as
12470    * it is much slower than just going to the point.
12471    */
12472   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12473       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12474       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12475       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12476     {
12477       if (tree_view->priv->scroll_to_path)
12478         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12479
12480       tree_view->priv->scroll_to_path = NULL;
12481       tree_view->priv->scroll_to_column = NULL;
12482
12483       if (path)
12484         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12485       if (column)
12486         tree_view->priv->scroll_to_column = column;
12487       tree_view->priv->scroll_to_use_align = use_align;
12488       tree_view->priv->scroll_to_row_align = row_align;
12489       tree_view->priv->scroll_to_col_align = col_align;
12490
12491       install_presize_handler (tree_view);
12492     }
12493   else
12494     {
12495       GdkRectangle cell_rect;
12496       GdkRectangle vis_rect;
12497       gint dest_x, dest_y;
12498
12499       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12500       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12501
12502       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12503
12504       dest_x = vis_rect.x;
12505       dest_y = vis_rect.y;
12506
12507       if (column)
12508         {
12509           if (use_align)
12510             {
12511               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12512             }
12513           else
12514             {
12515               if (cell_rect.x < vis_rect.x)
12516                 dest_x = cell_rect.x;
12517               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12518                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12519             }
12520         }
12521
12522       if (path)
12523         {
12524           if (use_align)
12525             {
12526               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12527               dest_y = MAX (dest_y, 0);
12528             }
12529           else
12530             {
12531               if (cell_rect.y < vis_rect.y)
12532                 dest_y = cell_rect.y;
12533               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12534                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12535             }
12536         }
12537
12538       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12539     }
12540 }
12541
12542 /**
12543  * gtk_tree_view_row_activated:
12544  * @tree_view: A #GtkTreeView
12545  * @path: The #GtkTreePath to be activated.
12546  * @column: The #GtkTreeViewColumn to be activated.
12547  *
12548  * Activates the cell determined by @path and @column.
12549  **/
12550 void
12551 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12552                              GtkTreePath       *path,
12553                              GtkTreeViewColumn *column)
12554 {
12555   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12556
12557   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12558 }
12559
12560
12561 static void
12562 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12563                                           GtkRBNode *node,
12564                                           gpointer   data)
12565 {
12566   GtkTreeView *tree_view = data;
12567
12568   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12569       node->children)
12570     {
12571       GtkTreePath *path;
12572       GtkTreeIter iter;
12573
12574       path = _gtk_tree_path_new_from_rbtree (tree, node);
12575       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12576
12577       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12578
12579       gtk_tree_path_free (path);
12580     }
12581
12582   if (node->children)
12583     _gtk_rbtree_traverse (node->children,
12584                           node->children->root,
12585                           G_PRE_ORDER,
12586                           gtk_tree_view_expand_all_emission_helper,
12587                           tree_view);
12588 }
12589
12590 /**
12591  * gtk_tree_view_expand_all:
12592  * @tree_view: A #GtkTreeView.
12593  *
12594  * Recursively expands all nodes in the @tree_view.
12595  **/
12596 void
12597 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12598 {
12599   GtkTreePath *path;
12600   GtkRBTree *tree;
12601   GtkRBNode *node;
12602
12603   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12604
12605   if (tree_view->priv->tree == NULL)
12606     return;
12607
12608   path = gtk_tree_path_new_first ();
12609   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12610
12611   while (node)
12612     {
12613       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12614       node = _gtk_rbtree_next (tree, node);
12615       gtk_tree_path_next (path);
12616   }
12617
12618   gtk_tree_path_free (path);
12619 }
12620
12621 /**
12622  * gtk_tree_view_collapse_all:
12623  * @tree_view: A #GtkTreeView.
12624  *
12625  * Recursively collapses all visible, expanded nodes in @tree_view.
12626  **/
12627 void
12628 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12629 {
12630   GtkRBTree *tree;
12631   GtkRBNode *node;
12632   GtkTreePath *path;
12633   gint *indices;
12634
12635   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12636
12637   if (tree_view->priv->tree == NULL)
12638     return;
12639
12640   path = gtk_tree_path_new ();
12641   gtk_tree_path_down (path);
12642   indices = gtk_tree_path_get_indices (path);
12643
12644   tree = tree_view->priv->tree;
12645   node = _gtk_rbtree_first (tree);
12646
12647   while (node)
12648     {
12649       if (node->children)
12650         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12651       indices[0]++;
12652       node = _gtk_rbtree_next (tree, node);
12653     }
12654
12655   gtk_tree_path_free (path);
12656 }
12657
12658 /**
12659  * gtk_tree_view_expand_to_path:
12660  * @tree_view: A #GtkTreeView.
12661  * @path: path to a row.
12662  *
12663  * Expands the row at @path. This will also expand all parent rows of
12664  * @path as necessary.
12665  *
12666  * Since: 2.2
12667  **/
12668 void
12669 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12670                               GtkTreePath *path)
12671 {
12672   gint i, depth;
12673   gint *indices;
12674   GtkTreePath *tmp;
12675
12676   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12677   g_return_if_fail (path != NULL);
12678
12679   depth = gtk_tree_path_get_depth (path);
12680   indices = gtk_tree_path_get_indices (path);
12681
12682   tmp = gtk_tree_path_new ();
12683   g_return_if_fail (tmp != NULL);
12684
12685   for (i = 0; i < depth; i++)
12686     {
12687       gtk_tree_path_append_index (tmp, indices[i]);
12688       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12689     }
12690
12691   gtk_tree_path_free (tmp);
12692 }
12693
12694 /* FIXME the bool return values for expand_row and collapse_row are
12695  * not analagous; they should be TRUE if the row had children and
12696  * was not already in the requested state.
12697  */
12698
12699
12700 static gboolean
12701 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12702                                GtkTreePath *path,
12703                                GtkRBTree   *tree,
12704                                GtkRBNode   *node,
12705                                gboolean     open_all,
12706                                gboolean     animate)
12707 {
12708   GtkTreeIter iter;
12709   GtkTreeIter temp;
12710   gboolean expand;
12711
12712   if (animate)
12713     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12714                   "gtk-enable-animations", &animate,
12715                   NULL);
12716
12717   remove_auto_expand_timeout (tree_view);
12718
12719   if (node->children && !open_all)
12720     return FALSE;
12721
12722   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12723     return FALSE;
12724
12725   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12726   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12727     return FALSE;
12728
12729
12730    if (node->children && open_all)
12731     {
12732       gboolean retval = FALSE;
12733       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12734
12735       gtk_tree_path_append_index (tmp_path, 0);
12736       tree = node->children;
12737       node = _gtk_rbtree_first (tree);
12738       /* try to expand the children */
12739       do
12740         {
12741          gboolean t;
12742          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12743                                             TRUE, animate);
12744          if (t)
12745            retval = TRUE;
12746
12747          gtk_tree_path_next (tmp_path);
12748          node = _gtk_rbtree_next (tree, node);
12749        }
12750       while (node != NULL);
12751
12752       gtk_tree_path_free (tmp_path);
12753
12754       return retval;
12755     }
12756
12757   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12758
12759   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12760     return FALSE;
12761
12762   if (expand)
12763     return FALSE;
12764
12765   node->children = _gtk_rbtree_new ();
12766   node->children->parent_tree = tree;
12767   node->children->parent_node = node;
12768
12769   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12770
12771   gtk_tree_view_build_tree (tree_view,
12772                             node->children,
12773                             &temp,
12774                             gtk_tree_path_get_depth (path) + 1,
12775                             open_all);
12776
12777   _gtk_tree_view_accessible_add (tree_view, node->children, NULL);
12778   _gtk_tree_view_accessible_add_state (tree_view,
12779                                        tree, node,
12780                                        GTK_CELL_RENDERER_EXPANDED);
12781
12782   install_presize_handler (tree_view);
12783
12784   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12785   if (open_all && node->children)
12786     {
12787       _gtk_rbtree_traverse (node->children,
12788                             node->children->root,
12789                             G_PRE_ORDER,
12790                             gtk_tree_view_expand_all_emission_helper,
12791                             tree_view);
12792     }
12793   return TRUE;
12794 }
12795
12796
12797 /**
12798  * gtk_tree_view_expand_row:
12799  * @tree_view: a #GtkTreeView
12800  * @path: path to a row
12801  * @open_all: whether to recursively expand, or just expand immediate children
12802  *
12803  * Opens the row so its children are visible.
12804  *
12805  * Return value: %TRUE if the row existed and had children
12806  **/
12807 gboolean
12808 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12809                           GtkTreePath *path,
12810                           gboolean     open_all)
12811 {
12812   GtkRBTree *tree;
12813   GtkRBNode *node;
12814
12815   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12816   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12817   g_return_val_if_fail (path != NULL, FALSE);
12818
12819   if (_gtk_tree_view_find_node (tree_view,
12820                                 path,
12821                                 &tree,
12822                                 &node))
12823     return FALSE;
12824
12825   if (tree != NULL)
12826     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12827   else
12828     return FALSE;
12829 }
12830
12831 static gboolean
12832 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12833                                  GtkTreePath *path,
12834                                  GtkRBTree   *tree,
12835                                  GtkRBNode   *node,
12836                                  gboolean     animate)
12837 {
12838   GtkTreeIter iter;
12839   GtkTreeIter children;
12840   gboolean collapse;
12841   gint x, y;
12842   GList *list;
12843   GdkWindow *child;
12844   gboolean selection_changed, cursor_changed;
12845
12846   if (animate)
12847     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12848                   "gtk-enable-animations", &animate,
12849                   NULL);
12850
12851   remove_auto_expand_timeout (tree_view);
12852
12853   if (node->children == NULL)
12854     return FALSE;
12855   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12856
12857   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12858
12859   if (collapse)
12860     return FALSE;
12861
12862   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12863    * a chance to prelight the correct node below */
12864
12865   if (tree_view->priv->prelight_tree)
12866     {
12867       GtkRBTree *parent_tree;
12868       GtkRBNode *parent_node;
12869
12870       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12871       parent_node = tree_view->priv->prelight_tree->parent_node;
12872       while (parent_tree)
12873         {
12874           if (parent_tree == tree && parent_node == node)
12875             {
12876               ensure_unprelighted (tree_view);
12877               break;
12878             }
12879           parent_node = parent_tree->parent_node;
12880           parent_tree = parent_tree->parent_tree;
12881         }
12882     }
12883
12884   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12885
12886   for (list = tree_view->priv->columns; list; list = list->next)
12887     {
12888       GtkTreeViewColumn *column = list->data;
12889
12890       if (gtk_tree_view_column_get_visible (column) == FALSE)
12891         continue;
12892       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12893         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12894     }
12895
12896   if (tree_view->priv->destroy_count_func)
12897     {
12898       GtkTreePath *child_path;
12899       gint child_count = 0;
12900       child_path = gtk_tree_path_copy (path);
12901       gtk_tree_path_down (child_path);
12902       if (node->children)
12903         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12904       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12905       gtk_tree_path_free (child_path);
12906     }
12907
12908   if (tree_view->priv->cursor_node)
12909     {
12910       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12911                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12912     }
12913   else
12914     cursor_changed = FALSE;
12915
12916   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12917     {
12918       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12919       if (gtk_tree_path_is_ancestor (path, anchor_path))
12920         {
12921           gtk_tree_row_reference_free (tree_view->priv->anchor);
12922           tree_view->priv->anchor = NULL;
12923         }
12924       gtk_tree_path_free (anchor_path);
12925     }
12926
12927   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12928
12929   /* Stop a pending double click */
12930   tree_view->priv->last_button_x = -1;
12931   tree_view->priv->last_button_y = -1;
12932
12933   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12934   _gtk_tree_view_accessible_remove_state (tree_view,
12935                                           tree, node,
12936                                           GTK_CELL_RENDERER_EXPANDED);
12937
12938   _gtk_rbtree_remove (node->children);
12939
12940   if (cursor_changed)
12941     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12942   if (selection_changed)
12943     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12944
12945   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12946     {
12947       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12948     }
12949
12950   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12951
12952   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12953     {
12954       /* now that we've collapsed all rows, we want to try to set the prelight
12955        * again. To do this, we fake a motion event and send it to ourselves. */
12956
12957       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12958                                               gdk_device_manager_get_client_pointer (
12959                                                 gdk_display_get_device_manager (
12960                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12961                                               &x, &y, NULL);
12962       if (child == tree_view->priv->bin_window)
12963         {
12964           GdkEventMotion event;
12965           gint child_x, child_y;
12966
12967           gdk_window_get_position (child, &child_x, &child_y);
12968
12969           event.window = tree_view->priv->bin_window;
12970           event.x = x - child_x;
12971           event.y = y - child_y;
12972
12973           /* despite the fact this isn't a real event, I'm almost positive it will
12974            * never trigger a drag event.  maybe_drag is the only function that uses
12975            * more than just event.x and event.y. */
12976           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12977         }
12978     }
12979
12980   return TRUE;
12981 }
12982
12983 /**
12984  * gtk_tree_view_collapse_row:
12985  * @tree_view: a #GtkTreeView
12986  * @path: path to a row in the @tree_view
12987  *
12988  * Collapses a row (hides its child rows, if they exist).
12989  *
12990  * Return value: %TRUE if the row was collapsed.
12991  **/
12992 gboolean
12993 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12994                             GtkTreePath *path)
12995 {
12996   GtkRBTree *tree;
12997   GtkRBNode *node;
12998
12999   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13000   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13001   g_return_val_if_fail (path != NULL, FALSE);
13002
13003   if (_gtk_tree_view_find_node (tree_view,
13004                                 path,
13005                                 &tree,
13006                                 &node))
13007     return FALSE;
13008
13009   if (tree == NULL || node->children == NULL)
13010     return FALSE;
13011
13012   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13013 }
13014
13015 static void
13016 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13017                                         GtkRBTree              *tree,
13018                                         GtkTreePath            *path,
13019                                         GtkTreeViewMappingFunc  func,
13020                                         gpointer                user_data)
13021 {
13022   GtkRBNode *node;
13023
13024   if (tree == NULL || tree->root == NULL)
13025     return;
13026
13027   node = _gtk_rbtree_first (tree);
13028
13029   while (node)
13030     {
13031       if (node->children)
13032         {
13033           (* func) (tree_view, path, user_data);
13034           gtk_tree_path_down (path);
13035           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13036           gtk_tree_path_up (path);
13037         }
13038       gtk_tree_path_next (path);
13039       node = _gtk_rbtree_next (tree, node);
13040     }
13041 }
13042
13043 /**
13044  * gtk_tree_view_map_expanded_rows:
13045  * @tree_view: A #GtkTreeView
13046  * @func: (scope call): A function to be called
13047  * @data: User data to be passed to the function.
13048  *
13049  * Calls @func on all expanded rows.
13050  **/
13051 void
13052 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13053                                  GtkTreeViewMappingFunc  func,
13054                                  gpointer                user_data)
13055 {
13056   GtkTreePath *path;
13057
13058   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13059   g_return_if_fail (func != NULL);
13060
13061   path = gtk_tree_path_new_first ();
13062
13063   gtk_tree_view_map_expanded_rows_helper (tree_view,
13064                                           tree_view->priv->tree,
13065                                           path, func, user_data);
13066
13067   gtk_tree_path_free (path);
13068 }
13069
13070 /**
13071  * gtk_tree_view_row_expanded:
13072  * @tree_view: A #GtkTreeView.
13073  * @path: A #GtkTreePath to test expansion state.
13074  *
13075  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13076  *
13077  * Return value: %TRUE if #path is expanded.
13078  **/
13079 gboolean
13080 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13081                             GtkTreePath *path)
13082 {
13083   GtkRBTree *tree;
13084   GtkRBNode *node;
13085
13086   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13087   g_return_val_if_fail (path != NULL, FALSE);
13088
13089   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13090
13091   if (node == NULL)
13092     return FALSE;
13093
13094   return (node->children != NULL);
13095 }
13096
13097 /**
13098  * gtk_tree_view_get_reorderable:
13099  * @tree_view: a #GtkTreeView
13100  *
13101  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13102  * gtk_tree_view_set_reorderable().
13103  *
13104  * Return value: %TRUE if the tree can be reordered.
13105  **/
13106 gboolean
13107 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13108 {
13109   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13110
13111   return tree_view->priv->reorderable;
13112 }
13113
13114 /**
13115  * gtk_tree_view_set_reorderable:
13116  * @tree_view: A #GtkTreeView.
13117  * @reorderable: %TRUE, if the tree can be reordered.
13118  *
13119  * This function is a convenience function to allow you to reorder
13120  * models that support the #GtkTreeDragSourceIface and the
13121  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13122  * these.  If @reorderable is %TRUE, then the user can reorder the
13123  * model by dragging and dropping rows. The developer can listen to
13124  * these changes by connecting to the model's row_inserted and
13125  * row_deleted signals. The reordering is implemented by setting up
13126  * the tree view as a drag source and destination. Therefore, drag and
13127  * drop can not be used in a reorderable view for any other purpose.
13128  *
13129  * This function does not give you any degree of control over the order -- any
13130  * reordering is allowed.  If more control is needed, you should probably
13131  * handle drag and drop manually.
13132  **/
13133 void
13134 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13135                                gboolean     reorderable)
13136 {
13137   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13138
13139   reorderable = reorderable != FALSE;
13140
13141   if (tree_view->priv->reorderable == reorderable)
13142     return;
13143
13144   if (reorderable)
13145     {
13146       const GtkTargetEntry row_targets[] = {
13147         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13148       };
13149
13150       gtk_tree_view_enable_model_drag_source (tree_view,
13151                                               GDK_BUTTON1_MASK,
13152                                               row_targets,
13153                                               G_N_ELEMENTS (row_targets),
13154                                               GDK_ACTION_MOVE);
13155       gtk_tree_view_enable_model_drag_dest (tree_view,
13156                                             row_targets,
13157                                             G_N_ELEMENTS (row_targets),
13158                                             GDK_ACTION_MOVE);
13159     }
13160   else
13161     {
13162       gtk_tree_view_unset_rows_drag_source (tree_view);
13163       gtk_tree_view_unset_rows_drag_dest (tree_view);
13164     }
13165
13166   tree_view->priv->reorderable = reorderable;
13167
13168   g_object_notify (G_OBJECT (tree_view), "reorderable");
13169 }
13170
13171 static void
13172 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13173                                GtkTreePath     *path,
13174                                SetCursorFlags   flags)
13175 {
13176   if (!(flags & CURSOR_INVALID) && tree_view->priv->cursor_node)
13177     {
13178       _gtk_tree_view_accessible_remove_state (tree_view,
13179                                               tree_view->priv->cursor_tree,
13180                                               tree_view->priv->cursor_node,
13181                                               GTK_CELL_RENDERER_FOCUSED);
13182       _gtk_tree_view_queue_draw_node (tree_view,
13183                                       tree_view->priv->cursor_tree,
13184                                       tree_view->priv->cursor_node,
13185                                       NULL);
13186     }
13187
13188   /* One cannot set the cursor on a separator.   Also, if
13189    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13190    * before finding the tree and node belonging to path.  The
13191    * path maps to a non-existing path and we will silently bail out.
13192    * We unset tree and node to avoid further processing.
13193    */
13194   if (path == NULL ||
13195       row_is_separator (tree_view, NULL, path)
13196       || _gtk_tree_view_find_node (tree_view,
13197                                    path,
13198                                    &tree_view->priv->cursor_tree,
13199                                    &tree_view->priv->cursor_node))
13200     {
13201       tree_view->priv->cursor_tree = NULL;
13202       tree_view->priv->cursor_node = NULL;
13203     }
13204
13205   if (tree_view->priv->cursor_node != NULL)
13206     {
13207       GtkRBTree *new_tree = NULL;
13208       GtkRBNode *new_node = NULL;
13209
13210       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13211         {
13212           GtkTreeSelectMode mode = 0;
13213
13214           if (tree_view->priv->extend_selection_pressed)
13215             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13216
13217           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13218                                                     tree_view->priv->cursor_node,
13219                                                     tree_view->priv->cursor_tree,
13220                                                     path,
13221                                                     mode,
13222                                                     FALSE);
13223         }
13224
13225       /* We have to re-find tree and node here again, somebody might have
13226        * cleared the node or the whole tree in the GtkTreeSelection::changed
13227        * callback. If the nodes differ we bail out here.
13228        */
13229       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13230
13231       if (tree_view->priv->cursor_node != new_node)
13232         return;
13233
13234       if (flags & CLAMP_NODE)
13235         {
13236           gtk_tree_view_clamp_node_visible (tree_view,
13237                                             tree_view->priv->cursor_tree,
13238                                             tree_view->priv->cursor_node);
13239           _gtk_tree_view_queue_draw_node (tree_view,
13240                                           tree_view->priv->cursor_tree,
13241                                           tree_view->priv->cursor_node,
13242                                           NULL);
13243         }
13244
13245       _gtk_tree_view_accessible_add_state (tree_view,
13246                                            tree_view->priv->cursor_tree,
13247                                            tree_view->priv->cursor_node,
13248                                            GTK_CELL_RENDERER_FOCUSED);
13249     }
13250
13251   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13252 }
13253
13254 /**
13255  * gtk_tree_view_get_cursor:
13256  * @tree_view: A #GtkTreeView
13257  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13258  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13259  *
13260  * Fills in @path and @focus_column with the current path and focus column.  If
13261  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13262  * currently has focus, then *@focus_column will be %NULL.
13263  *
13264  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13265  * you are done with it.
13266  **/
13267 void
13268 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13269                           GtkTreePath       **path,
13270                           GtkTreeViewColumn **focus_column)
13271 {
13272   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13273
13274   if (path)
13275     {
13276       if (tree_view->priv->cursor_node)
13277         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13278                                                 tree_view->priv->cursor_node);
13279       else
13280         *path = NULL;
13281     }
13282
13283   if (focus_column)
13284     {
13285       *focus_column = tree_view->priv->focus_column;
13286     }
13287 }
13288
13289 /**
13290  * gtk_tree_view_set_cursor:
13291  * @tree_view: A #GtkTreeView
13292  * @path: A #GtkTreePath
13293  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13294  * @start_editing: %TRUE if the specified cell should start being edited.
13295  *
13296  * Sets the current keyboard focus to be at @path, and selects it.  This is
13297  * useful when you want to focus the user's attention on a particular row.  If
13298  * @focus_column is not %NULL, then focus is given to the column specified by
13299  * it. Additionally, if @focus_column is specified, and @start_editing is
13300  * %TRUE, then editing should be started in the specified cell.
13301  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13302  * in order to give keyboard focus to the widget.  Please note that editing
13303  * can only happen when the widget is realized.
13304  *
13305  * If @path is invalid for @model, the current cursor (if any) will be unset
13306  * and the function will return without failing.
13307  **/
13308 void
13309 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13310                           GtkTreePath       *path,
13311                           GtkTreeViewColumn *focus_column,
13312                           gboolean           start_editing)
13313 {
13314   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13315                                     NULL, start_editing);
13316 }
13317
13318 /**
13319  * gtk_tree_view_set_cursor_on_cell:
13320  * @tree_view: A #GtkTreeView
13321  * @path: A #GtkTreePath
13322  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13323  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13324  * @start_editing: %TRUE if the specified cell should start being edited.
13325  *
13326  * Sets the current keyboard focus to be at @path, and selects it.  This is
13327  * useful when you want to focus the user's attention on a particular row.  If
13328  * @focus_column is not %NULL, then focus is given to the column specified by
13329  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13330  * contains 2 or more editable or activatable cells, then focus is given to
13331  * the cell specified by @focus_cell. Additionally, if @focus_column is
13332  * specified, and @start_editing is %TRUE, then editing should be started in
13333  * the specified cell.  This function is often followed by
13334  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13335  * widget.  Please note that editing can only happen when the widget is
13336  * realized.
13337  *
13338  * If @path is invalid for @model, the current cursor (if any) will be unset
13339  * and the function will return without failing.
13340  *
13341  * Since: 2.2
13342  **/
13343 void
13344 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13345                                   GtkTreePath       *path,
13346                                   GtkTreeViewColumn *focus_column,
13347                                   GtkCellRenderer   *focus_cell,
13348                                   gboolean           start_editing)
13349 {
13350   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13351   g_return_if_fail (path != NULL);
13352   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13353
13354   if (!tree_view->priv->model)
13355     return;
13356
13357   if (focus_cell)
13358     {
13359       g_return_if_fail (focus_column);
13360       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13361     }
13362
13363   /* cancel the current editing, if it exists */
13364   if (tree_view->priv->edited_column &&
13365       gtk_cell_area_get_edit_widget
13366       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13367     gtk_tree_view_stop_editing (tree_view, TRUE);
13368
13369   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13370
13371   if (focus_column &&
13372       gtk_tree_view_column_get_visible (focus_column))
13373     {
13374       GList *list;
13375       gboolean column_in_tree = FALSE;
13376
13377       for (list = tree_view->priv->columns; list; list = list->next)
13378         if (list->data == focus_column)
13379           {
13380             column_in_tree = TRUE;
13381             break;
13382           }
13383       g_return_if_fail (column_in_tree);
13384       _gtk_tree_view_set_focus_column (tree_view, focus_column);
13385       if (focus_cell)
13386         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13387       if (start_editing)
13388         gtk_tree_view_start_editing (tree_view, path, TRUE);
13389     }
13390 }
13391
13392 /**
13393  * gtk_tree_view_get_bin_window:
13394  * @tree_view: A #GtkTreeView
13395  *
13396  * Returns the window that @tree_view renders to.
13397  * This is used primarily to compare to <literal>event->window</literal>
13398  * to confirm that the event on @tree_view is on the right window.
13399  *
13400  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13401  *     hasn't been realized yet
13402  **/
13403 GdkWindow *
13404 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13405 {
13406   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13407
13408   return tree_view->priv->bin_window;
13409 }
13410
13411 /**
13412  * gtk_tree_view_get_path_at_pos:
13413  * @tree_view: A #GtkTreeView.
13414  * @x: The x position to be identified (relative to bin_window).
13415  * @y: The y position to be identified (relative to bin_window).
13416  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13417  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13418  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13419  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13420  *
13421  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13422  * (please see gtk_tree_view_get_bin_window()).
13423  * That is, @x and @y are relative to an events coordinates. @x and @y must
13424  * come from an event on the @tree_view only where <literal>event->window ==
13425  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13426  * things like popup menus. If @path is non-%NULL, then it will be filled
13427  * with the #GtkTreePath at that point.  This path should be freed with
13428  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13429  * with the column at that point.  @cell_x and @cell_y return the coordinates
13430  * relative to the cell background (i.e. the @background_area passed to
13431  * gtk_cell_renderer_render()).  This function is only meaningful if
13432  * @tree_view is realized.  Therefore this function will always return %FALSE
13433  * if @tree_view is not realized or does not have a model.
13434  *
13435  * For converting widget coordinates (eg. the ones you get from
13436  * GtkWidget::query-tooltip), please see
13437  * gtk_tree_view_convert_widget_to_bin_window_coords().
13438  *
13439  * Return value: %TRUE if a row exists at that coordinate.
13440  **/
13441 gboolean
13442 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13443                                gint                x,
13444                                gint                y,
13445                                GtkTreePath       **path,
13446                                GtkTreeViewColumn **column,
13447                                gint               *cell_x,
13448                                gint               *cell_y)
13449 {
13450   GtkRBTree *tree;
13451   GtkRBNode *node;
13452   gint y_offset;
13453
13454   g_return_val_if_fail (tree_view != NULL, FALSE);
13455
13456   if (path)
13457     *path = NULL;
13458   if (column)
13459     *column = NULL;
13460
13461   if (tree_view->priv->bin_window == NULL)
13462     return FALSE;
13463
13464   if (tree_view->priv->tree == NULL)
13465     return FALSE;
13466
13467   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13468     return FALSE;
13469
13470   if (x < 0 || y < 0)
13471     return FALSE;
13472
13473   if (column || cell_x)
13474     {
13475       GtkTreeViewColumn *tmp_column;
13476       GtkTreeViewColumn *last_column = NULL;
13477       GList *list;
13478       gint remaining_x = x;
13479       gboolean found = FALSE;
13480       gboolean rtl;
13481       gint width;
13482
13483       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13484       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13485            list;
13486            list = (rtl ? list->prev : list->next))
13487         {
13488           tmp_column = list->data;
13489
13490           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13491             continue;
13492
13493           last_column = tmp_column;
13494           width = gtk_tree_view_column_get_width (tmp_column);
13495           if (remaining_x <= width)
13496             {
13497               found = TRUE;
13498
13499               if (column)
13500                 *column = tmp_column;
13501
13502               if (cell_x)
13503                 *cell_x = remaining_x;
13504
13505               break;
13506             }
13507           remaining_x -= width;
13508         }
13509
13510       /* If found is FALSE and there is a last_column, then it the remainder
13511        * space is in that area
13512        */
13513       if (!found)
13514         {
13515           if (last_column)
13516             {
13517               if (column)
13518                 *column = last_column;
13519
13520               if (cell_x)
13521                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13522             }
13523           else
13524             {
13525               return FALSE;
13526             }
13527         }
13528     }
13529
13530   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13531                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13532                                       &tree, &node);
13533
13534   if (tree == NULL)
13535     return FALSE;
13536
13537   if (cell_y)
13538     *cell_y = y_offset;
13539
13540   if (path)
13541     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13542
13543   return TRUE;
13544 }
13545
13546
13547 static inline gint
13548 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13549                                     GtkRBNode   *node,
13550                                     gint         vertical_separator)
13551 {
13552   int expander_size = gtk_tree_view_get_expander_size (tree_view);
13553   int height;
13554
13555   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13556    * i.e. just the cells, no spacing.
13557    *
13558    * The cell area height is at least expander_size - vertical_separator.
13559    * For regular nodes, the height is then at least expander_size. We should
13560    * be able to enforce the expander_size minimum here, because this
13561    * function will not be called for irregular (e.g. separator) rows.
13562    */
13563   height = gtk_tree_view_get_row_height (tree_view, node);
13564   if (height < expander_size)
13565     height = expander_size;
13566
13567   return height - vertical_separator;
13568 }
13569
13570 static inline gint
13571 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13572                                       GtkRBTree   *tree,
13573                                       GtkRBNode   *node,
13574                                       gint         vertical_separator)
13575 {
13576   int offset;
13577
13578   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13579   offset += vertical_separator / 2;
13580
13581   return offset;
13582 }
13583
13584 /**
13585  * gtk_tree_view_get_cell_area:
13586  * @tree_view: a #GtkTreeView
13587  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13588  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13589  * @rect: (out): rectangle to fill with cell rect
13590  *
13591  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13592  * row specified by @path and the column specified by @column.  If @path is
13593  * %NULL, or points to a path not currently displayed, the @y and @height fields
13594  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13595  * fields will be filled with 0.  The sum of all cell rects does not cover the
13596  * entire tree; there are extra pixels in between rows, for example. The
13597  * returned rectangle is equivalent to the @cell_area passed to
13598  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13599  * realized.
13600  **/
13601 void
13602 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13603                              GtkTreePath        *path,
13604                              GtkTreeViewColumn  *column,
13605                              GdkRectangle       *rect)
13606 {
13607   GtkRBTree *tree = NULL;
13608   GtkRBNode *node = NULL;
13609   gint vertical_separator;
13610   gint horizontal_separator;
13611
13612   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13613   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13614   g_return_if_fail (rect != NULL);
13615   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13616   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13617
13618   gtk_widget_style_get (GTK_WIDGET (tree_view),
13619                         "vertical-separator", &vertical_separator,
13620                         "horizontal-separator", &horizontal_separator,
13621                         NULL);
13622
13623   rect->x = 0;
13624   rect->y = 0;
13625   rect->width = 0;
13626   rect->height = 0;
13627
13628   if (column)
13629     {
13630       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13631       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13632     }
13633
13634   if (path)
13635     {
13636       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13637
13638       /* Get vertical coords */
13639       if ((!ret && tree == NULL) || ret)
13640         return;
13641
13642       if (row_is_separator (tree_view, NULL, path))
13643         {
13644           /* There isn't really a "cell area" for separator, so we
13645            * return the y, height values for background area instead.
13646            */
13647           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13648           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13649         }
13650       else
13651         {
13652           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13653                                                           vertical_separator);
13654           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13655                                                              vertical_separator);
13656         }
13657
13658       if (column &&
13659           gtk_tree_view_is_expander_column (tree_view, column))
13660         {
13661           gint depth = gtk_tree_path_get_depth (path);
13662           gboolean rtl;
13663
13664           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13665
13666           if (!rtl)
13667             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13668           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13669
13670           if (gtk_tree_view_draw_expanders (tree_view))
13671             {
13672               int expander_size = gtk_tree_view_get_expander_size (tree_view);
13673               if (!rtl)
13674                 rect->x += depth * expander_size;
13675               rect->width -= depth * expander_size;
13676             }
13677
13678           rect->width = MAX (rect->width, 0);
13679         }
13680     }
13681 }
13682
13683 static inline gint
13684 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13685                               GtkRBNode   *node)
13686 {
13687   int expander_size = gtk_tree_view_get_expander_size (tree_view);
13688   int height;
13689
13690   /* The "background" areas of all rows/cells add up to cover the entire tree.
13691    * The background includes all inter-row and inter-cell spacing.
13692    *
13693    * If the row pointed at by node does not have a height set, we default
13694    * to expander_size, which is the minimum height for regular nodes.
13695    * Non-regular nodes (e.g. separators) can have a height set smaller
13696    * than expander_size and should not be overruled here.
13697    */
13698   height = GTK_RBNODE_GET_HEIGHT (node);
13699   if (height <= 0)
13700     height = expander_size;
13701
13702   return height;
13703 }
13704
13705 static inline gint
13706 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13707                                 GtkRBTree   *tree,
13708                                 GtkRBNode   *node)
13709 {
13710   int offset;
13711
13712   offset = _gtk_rbtree_node_find_offset (tree, node);
13713
13714   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13715 }
13716
13717 /**
13718  * gtk_tree_view_get_background_area:
13719  * @tree_view: a #GtkTreeView
13720  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13721  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13722  * @rect: (out): rectangle to fill with cell background rect
13723  *
13724  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13725  * row specified by @path and the column specified by @column.  If @path is
13726  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13727  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13728  * fields will be filled with 0.  The returned rectangle is equivalent to the
13729  * @background_area passed to gtk_cell_renderer_render().  These background
13730  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13731  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13732  * itself, excluding surrounding borders and the tree expander area.
13733  *
13734  **/
13735 void
13736 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13737                                    GtkTreePath        *path,
13738                                    GtkTreeViewColumn  *column,
13739                                    GdkRectangle       *rect)
13740 {
13741   GtkRBTree *tree = NULL;
13742   GtkRBNode *node = NULL;
13743
13744   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13745   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13746   g_return_if_fail (rect != NULL);
13747
13748   rect->x = 0;
13749   rect->y = 0;
13750   rect->width = 0;
13751   rect->height = 0;
13752
13753   if (path)
13754     {
13755       /* Get vertical coords */
13756
13757       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13758           tree == NULL)
13759         return;
13760
13761       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13762       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13763     }
13764
13765   if (column)
13766     {
13767       gint x2 = 0;
13768
13769       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13770       rect->width = x2 - rect->x;
13771     }
13772 }
13773
13774 /**
13775  * gtk_tree_view_get_visible_rect:
13776  * @tree_view: a #GtkTreeView
13777  * @visible_rect: (out): rectangle to fill
13778  *
13779  * Fills @visible_rect with the currently-visible region of the
13780  * buffer, in tree coordinates. Convert to bin_window coordinates with
13781  * gtk_tree_view_convert_tree_to_bin_window_coords().
13782  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13783  * scrollable area of the tree.
13784  **/
13785 void
13786 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13787                                 GdkRectangle *visible_rect)
13788 {
13789   GtkAllocation allocation;
13790   GtkWidget *widget;
13791
13792   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13793
13794   widget = GTK_WIDGET (tree_view);
13795
13796   if (visible_rect)
13797     {
13798       gtk_widget_get_allocation (widget, &allocation);
13799       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13800       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13801       visible_rect->width = allocation.width;
13802       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13803     }
13804 }
13805
13806 /**
13807  * gtk_tree_view_convert_widget_to_tree_coords:
13808  * @tree_view: a #GtkTreeView
13809  * @wx: X coordinate relative to the widget
13810  * @wy: Y coordinate relative to the widget
13811  * @tx: (out): return location for tree X coordinate
13812  * @ty: (out): return location for tree Y coordinate
13813  *
13814  * Converts widget coordinates to coordinates for the
13815  * tree (the full scrollable area of the tree).
13816  *
13817  * Since: 2.12
13818  **/
13819 void
13820 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13821                                              gint         wx,
13822                                              gint         wy,
13823                                              gint        *tx,
13824                                              gint        *ty)
13825 {
13826   gint x, y;
13827
13828   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13829
13830   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13831                                                      wx, wy,
13832                                                      &x, &y);
13833   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13834                                                    x, y,
13835                                                    tx, ty);
13836 }
13837
13838 /**
13839  * gtk_tree_view_convert_tree_to_widget_coords:
13840  * @tree_view: a #GtkTreeView
13841  * @tx: X coordinate relative to the tree
13842  * @ty: Y coordinate relative to the tree
13843  * @wx: (out): return location for widget X coordinate
13844  * @wy: (out): return location for widget Y coordinate
13845  *
13846  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13847  * to widget coordinates.
13848  *
13849  * Since: 2.12
13850  **/
13851 void
13852 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13853                                              gint         tx,
13854                                              gint         ty,
13855                                              gint        *wx,
13856                                              gint        *wy)
13857 {
13858   gint x, y;
13859
13860   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13861
13862   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13863                                                    tx, ty,
13864                                                    &x, &y);
13865   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13866                                                      x, y,
13867                                                      wx, wy);
13868 }
13869
13870 /**
13871  * gtk_tree_view_convert_widget_to_bin_window_coords:
13872  * @tree_view: a #GtkTreeView
13873  * @wx: X coordinate relative to the widget
13874  * @wy: Y coordinate relative to the widget
13875  * @bx: (out): return location for bin_window X coordinate
13876  * @by: (out): return location for bin_window Y coordinate
13877  *
13878  * Converts widget coordinates to coordinates for the bin_window
13879  * (see gtk_tree_view_get_bin_window()).
13880  *
13881  * Since: 2.12
13882  **/
13883 void
13884 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13885                                                    gint         wx,
13886                                                    gint         wy,
13887                                                    gint        *bx,
13888                                                    gint        *by)
13889 {
13890   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13891
13892   if (bx)
13893     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13894   if (by)
13895     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13896 }
13897
13898 /**
13899  * gtk_tree_view_convert_bin_window_to_widget_coords:
13900  * @tree_view: a #GtkTreeView
13901  * @bx: bin_window X coordinate
13902  * @by: bin_window Y coordinate
13903  * @wx: (out): return location for widget X coordinate
13904  * @wy: (out): return location for widget Y coordinate
13905  *
13906  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13907  * to widget relative coordinates.
13908  *
13909  * Since: 2.12
13910  **/
13911 void
13912 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13913                                                    gint         bx,
13914                                                    gint         by,
13915                                                    gint        *wx,
13916                                                    gint        *wy)
13917 {
13918   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13919
13920   if (wx)
13921     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13922   if (wy)
13923     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13924 }
13925
13926 /**
13927  * gtk_tree_view_convert_tree_to_bin_window_coords:
13928  * @tree_view: a #GtkTreeView
13929  * @tx: tree X coordinate
13930  * @ty: tree Y coordinate
13931  * @bx: (out): return location for X coordinate relative to bin_window
13932  * @by: (out): return location for Y coordinate relative to bin_window
13933  *
13934  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13935  * to bin_window coordinates.
13936  *
13937  * Since: 2.12
13938  **/
13939 void
13940 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13941                                                  gint         tx,
13942                                                  gint         ty,
13943                                                  gint        *bx,
13944                                                  gint        *by)
13945 {
13946   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13947
13948   if (bx)
13949     *bx = tx;
13950   if (by)
13951     *by = ty - tree_view->priv->dy;
13952 }
13953
13954 /**
13955  * gtk_tree_view_convert_bin_window_to_tree_coords:
13956  * @tree_view: a #GtkTreeView
13957  * @bx: X coordinate relative to bin_window
13958  * @by: Y coordinate relative to bin_window
13959  * @tx: (out): return location for tree X coordinate
13960  * @ty: (out): return location for tree Y coordinate
13961  *
13962  * Converts bin_window coordinates to coordinates for the
13963  * tree (the full scrollable area of the tree).
13964  *
13965  * Since: 2.12
13966  **/
13967 void
13968 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13969                                                  gint         bx,
13970                                                  gint         by,
13971                                                  gint        *tx,
13972                                                  gint        *ty)
13973 {
13974   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13975
13976   if (tx)
13977     *tx = bx;
13978   if (ty)
13979     *ty = by + tree_view->priv->dy;
13980 }
13981
13982
13983
13984 /**
13985  * gtk_tree_view_get_visible_range:
13986  * @tree_view: A #GtkTreeView
13987  * @start_path: (out) (allow-none): Return location for start of region,
13988  *              or %NULL.
13989  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13990  *
13991  * Sets @start_path and @end_path to be the first and last visible path.
13992  * Note that there may be invisible paths in between.
13993  *
13994  * The paths should be freed with gtk_tree_path_free() after use.
13995  *
13996  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13997  *
13998  * Since: 2.8
13999  **/
14000 gboolean
14001 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
14002                                  GtkTreePath **start_path,
14003                                  GtkTreePath **end_path)
14004 {
14005   GtkRBTree *tree;
14006   GtkRBNode *node;
14007   gboolean retval;
14008
14009   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14010
14011   if (!tree_view->priv->tree)
14012     return FALSE;
14013
14014   retval = TRUE;
14015
14016   if (start_path)
14017     {
14018       _gtk_rbtree_find_offset (tree_view->priv->tree,
14019                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14020                                &tree, &node);
14021       if (node)
14022         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
14023       else
14024         retval = FALSE;
14025     }
14026
14027   if (end_path)
14028     {
14029       gint y;
14030
14031       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14032         y = tree_view->priv->height - 1;
14033       else
14034         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14035
14036       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14037       if (node)
14038         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14039       else
14040         retval = FALSE;
14041     }
14042
14043   return retval;
14044 }
14045
14046 /**
14047  * gtk_tree_view_is_blank_at_pos:
14048  * @tree_view: A #GtkTreeView
14049  * @x: The x position to be identified (relative to bin_window)
14050  * @y: The y position to be identified (relative to bin_window)
14051  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14052  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14053  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14054  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14055  *
14056  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14057  * cell content nor an expander arrow is drawn at the location. If so, the
14058  * location can be considered as the background. You might wish to take
14059  * special action on clicks on the background, such as clearing a current
14060  * selection, having a custom context menu or starting rubber banding.
14061  *
14062  * The @x and @y coordinate that are provided must be relative to bin_window
14063  * coordinates.  That is, @x and @y must come from an event on @tree_view
14064  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14065  *
14066  * For converting widget coordinates (eg. the ones you get from
14067  * GtkWidget::query-tooltip), please see
14068  * gtk_tree_view_convert_widget_to_bin_window_coords().
14069  *
14070  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14071  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14072  * gtk_tree_view_get_path_at_pos() for more information.
14073  *
14074  * Return value: %TRUE if the area at the given coordinates is blank,
14075  * %FALSE otherwise.
14076  *
14077  * Since: 3.0
14078  */
14079 gboolean
14080 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14081                                gint                x,
14082                                gint                y,
14083                                GtkTreePath       **path,
14084                                GtkTreeViewColumn **column,
14085                                gint               *cell_x,
14086                                gint               *cell_y)
14087 {
14088   GtkRBTree *tree;
14089   GtkRBNode *node;
14090   GtkTreeIter iter;
14091   GtkTreePath *real_path;
14092   GtkTreeViewColumn *real_column;
14093   GdkRectangle cell_area, background_area;
14094
14095   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14096
14097   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14098                                       &real_path, &real_column,
14099                                       cell_x, cell_y))
14100     /* If there's no path here, it is blank */
14101     return TRUE;
14102
14103   if (path)
14104     *path = real_path;
14105
14106   if (column)
14107     *column = real_column;
14108
14109   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14110   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14111
14112   /* Check if there's an expander arrow at (x, y) */
14113   if (real_column == tree_view->priv->expander_column
14114       && gtk_tree_view_draw_expanders (tree_view))
14115     {
14116       gboolean over_arrow;
14117
14118       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14119
14120       if (over_arrow)
14121         {
14122           if (!path)
14123             gtk_tree_path_free (real_path);
14124           return FALSE;
14125         }
14126     }
14127
14128   /* Otherwise, have the column see if there's a cell at (x, y) */
14129   gtk_tree_view_column_cell_set_cell_data (real_column,
14130                                            tree_view->priv->model,
14131                                            &iter,
14132                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14133                                            node->children ? TRUE : FALSE);
14134
14135   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14136                                      &background_area);
14137   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14138                                &cell_area);
14139
14140   if (!path)
14141     gtk_tree_path_free (real_path);
14142
14143   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14144                                                 &cell_area,
14145                                                 &background_area,
14146                                                 x, y);
14147 }
14148
14149 static void
14150 unset_reorderable (GtkTreeView *tree_view)
14151 {
14152   if (tree_view->priv->reorderable)
14153     {
14154       tree_view->priv->reorderable = FALSE;
14155       g_object_notify (G_OBJECT (tree_view), "reorderable");
14156     }
14157 }
14158
14159 /**
14160  * gtk_tree_view_enable_model_drag_source:
14161  * @tree_view: a #GtkTreeView
14162  * @start_button_mask: Mask of allowed buttons to start drag
14163  * @targets: (array length=n_targets): the table of targets that the drag will support
14164  * @n_targets: the number of items in @targets
14165  * @actions: the bitmask of possible actions for a drag from this
14166  *    widget
14167  *
14168  * Turns @tree_view into a drag source for automatic DND. Calling this
14169  * method sets #GtkTreeView:reorderable to %FALSE.
14170  **/
14171 void
14172 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14173                                         GdkModifierType           start_button_mask,
14174                                         const GtkTargetEntry     *targets,
14175                                         gint                      n_targets,
14176                                         GdkDragAction             actions)
14177 {
14178   TreeViewDragInfo *di;
14179
14180   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14181
14182   gtk_drag_source_set (GTK_WIDGET (tree_view),
14183                        0,
14184                        targets,
14185                        n_targets,
14186                        actions);
14187
14188   di = ensure_info (tree_view);
14189
14190   di->start_button_mask = start_button_mask;
14191   di->source_actions = actions;
14192   di->source_set = TRUE;
14193
14194   unset_reorderable (tree_view);
14195 }
14196
14197 /**
14198  * gtk_tree_view_enable_model_drag_dest:
14199  * @tree_view: a #GtkTreeView
14200  * @targets: (array length=n_targets): the table of targets that
14201  *           the drag will support
14202  * @n_targets: the number of items in @targets
14203  * @actions: the bitmask of possible actions for a drag from this
14204  *    widget
14205  *
14206  * Turns @tree_view into a drop destination for automatic DND. Calling
14207  * this method sets #GtkTreeView:reorderable to %FALSE.
14208  **/
14209 void
14210 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14211                                       const GtkTargetEntry     *targets,
14212                                       gint                      n_targets,
14213                                       GdkDragAction             actions)
14214 {
14215   TreeViewDragInfo *di;
14216
14217   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14218
14219   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14220                      0,
14221                      targets,
14222                      n_targets,
14223                      actions);
14224
14225   di = ensure_info (tree_view);
14226   di->dest_set = TRUE;
14227
14228   unset_reorderable (tree_view);
14229 }
14230
14231 /**
14232  * gtk_tree_view_unset_rows_drag_source:
14233  * @tree_view: a #GtkTreeView
14234  *
14235  * Undoes the effect of
14236  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14237  * #GtkTreeView:reorderable to %FALSE.
14238  **/
14239 void
14240 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14241 {
14242   TreeViewDragInfo *di;
14243
14244   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14245
14246   di = get_info (tree_view);
14247
14248   if (di)
14249     {
14250       if (di->source_set)
14251         {
14252           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14253           di->source_set = FALSE;
14254         }
14255
14256       if (!di->dest_set && !di->source_set)
14257         remove_info (tree_view);
14258     }
14259
14260   unset_reorderable (tree_view);
14261 }
14262
14263 /**
14264  * gtk_tree_view_unset_rows_drag_dest:
14265  * @tree_view: a #GtkTreeView
14266  *
14267  * Undoes the effect of
14268  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14269  * #GtkTreeView:reorderable to %FALSE.
14270  **/
14271 void
14272 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14273 {
14274   TreeViewDragInfo *di;
14275
14276   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14277
14278   di = get_info (tree_view);
14279
14280   if (di)
14281     {
14282       if (di->dest_set)
14283         {
14284           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14285           di->dest_set = FALSE;
14286         }
14287
14288       if (!di->dest_set && !di->source_set)
14289         remove_info (tree_view);
14290     }
14291
14292   unset_reorderable (tree_view);
14293 }
14294
14295 /**
14296  * gtk_tree_view_set_drag_dest_row:
14297  * @tree_view: a #GtkTreeView
14298  * @path: (allow-none): The path of the row to highlight, or %NULL
14299  * @pos: Specifies whether to drop before, after or into the row
14300  *
14301  * Sets the row that is highlighted for feedback.
14302  * If @path is %NULL, an existing highlight is removed.
14303  */
14304 void
14305 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14306                                  GtkTreePath            *path,
14307                                  GtkTreeViewDropPosition pos)
14308 {
14309   GtkTreePath *current_dest;
14310
14311   /* Note; this function is exported to allow a custom DND
14312    * implementation, so it can't touch TreeViewDragInfo
14313    */
14314
14315   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14316
14317   current_dest = NULL;
14318
14319   if (tree_view->priv->drag_dest_row)
14320     {
14321       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14322       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14323     }
14324
14325   /* special case a drop on an empty model */
14326   tree_view->priv->empty_view_drop = 0;
14327
14328   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14329       && gtk_tree_path_get_depth (path) == 1
14330       && gtk_tree_path_get_indices (path)[0] == 0)
14331     {
14332       gint n_children;
14333
14334       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14335                                                    NULL);
14336
14337       if (!n_children)
14338         tree_view->priv->empty_view_drop = 1;
14339     }
14340
14341   tree_view->priv->drag_dest_pos = pos;
14342
14343   if (path)
14344     {
14345       tree_view->priv->drag_dest_row =
14346         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14347       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14348     }
14349   else
14350     tree_view->priv->drag_dest_row = NULL;
14351
14352   if (current_dest)
14353     {
14354       GtkRBTree *tree, *new_tree;
14355       GtkRBNode *node, *new_node;
14356
14357       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14358       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14359
14360       if (tree && node)
14361         {
14362           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14363           if (new_tree && new_node)
14364             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14365
14366           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14367           if (new_tree && new_node)
14368             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14369         }
14370       gtk_tree_path_free (current_dest);
14371     }
14372 }
14373
14374 /**
14375  * gtk_tree_view_get_drag_dest_row:
14376  * @tree_view: a #GtkTreeView
14377  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14378  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14379  *
14380  * Gets information about the row that is highlighted for feedback.
14381  **/
14382 void
14383 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14384                                  GtkTreePath             **path,
14385                                  GtkTreeViewDropPosition  *pos)
14386 {
14387   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14388
14389   if (path)
14390     {
14391       if (tree_view->priv->drag_dest_row)
14392         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14393       else
14394         {
14395           if (tree_view->priv->empty_view_drop)
14396             *path = gtk_tree_path_new_from_indices (0, -1);
14397           else
14398             *path = NULL;
14399         }
14400     }
14401
14402   if (pos)
14403     *pos = tree_view->priv->drag_dest_pos;
14404 }
14405
14406 /**
14407  * gtk_tree_view_get_dest_row_at_pos:
14408  * @tree_view: a #GtkTreeView
14409  * @drag_x: the position to determine the destination row for
14410  * @drag_y: the position to determine the destination row for
14411  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14412  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14413  *
14414  * Determines the destination row for a given position.  @drag_x and
14415  * @drag_y are expected to be in widget coordinates.  This function is only
14416  * meaningful if @tree_view is realized.  Therefore this function will always
14417  * return %FALSE if @tree_view is not realized or does not have a model.
14418  *
14419  * Return value: whether there is a row at the given position, %TRUE if this
14420  * is indeed the case.
14421  **/
14422 gboolean
14423 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14424                                    gint                     drag_x,
14425                                    gint                     drag_y,
14426                                    GtkTreePath            **path,
14427                                    GtkTreeViewDropPosition *pos)
14428 {
14429   gint cell_y;
14430   gint bin_x, bin_y;
14431   gdouble offset_into_row;
14432   gdouble third;
14433   GdkRectangle cell;
14434   GtkTreeViewColumn *column = NULL;
14435   GtkTreePath *tmp_path = NULL;
14436
14437   /* Note; this function is exported to allow a custom DND
14438    * implementation, so it can't touch TreeViewDragInfo
14439    */
14440
14441   g_return_val_if_fail (tree_view != NULL, FALSE);
14442   g_return_val_if_fail (drag_x >= 0, FALSE);
14443   g_return_val_if_fail (drag_y >= 0, FALSE);
14444
14445   if (path)
14446     *path = NULL;
14447
14448   if (tree_view->priv->bin_window == NULL)
14449     return FALSE;
14450
14451   if (tree_view->priv->tree == NULL)
14452     return FALSE;
14453
14454   /* If in the top third of a row, we drop before that row; if
14455    * in the bottom third, drop after that row; if in the middle,
14456    * and the row has children, drop into the row.
14457    */
14458   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14459                                                      &bin_x, &bin_y);
14460
14461   if (!gtk_tree_view_get_path_at_pos (tree_view,
14462                                       bin_x,
14463                                       bin_y,
14464                                       &tmp_path,
14465                                       &column,
14466                                       NULL,
14467                                       &cell_y))
14468     return FALSE;
14469
14470   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14471                                      &cell);
14472
14473   offset_into_row = cell_y;
14474
14475   if (path)
14476     *path = tmp_path;
14477   else
14478     gtk_tree_path_free (tmp_path);
14479
14480   tmp_path = NULL;
14481
14482   third = cell.height / 3.0;
14483
14484   if (pos)
14485     {
14486       if (offset_into_row < third)
14487         {
14488           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14489         }
14490       else if (offset_into_row < (cell.height / 2.0))
14491         {
14492           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14493         }
14494       else if (offset_into_row < third * 2.0)
14495         {
14496           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14497         }
14498       else
14499         {
14500           *pos = GTK_TREE_VIEW_DROP_AFTER;
14501         }
14502     }
14503
14504   return TRUE;
14505 }
14506
14507
14508
14509 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14510 /**
14511  * gtk_tree_view_create_row_drag_icon:
14512  * @tree_view: a #GtkTreeView
14513  * @path: a #GtkTreePath in @tree_view
14514  *
14515  * Creates a #cairo_surface_t representation of the row at @path.
14516  * This image is used for a drag icon.
14517  *
14518  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14519  **/
14520 cairo_surface_t *
14521 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14522                                     GtkTreePath  *path)
14523 {
14524   GtkTreeIter   iter;
14525   GtkRBTree    *tree;
14526   GtkRBNode    *node;
14527   GtkStyleContext *context;
14528   gint cell_offset;
14529   GList *list;
14530   GdkRectangle background_area;
14531   GtkWidget *widget;
14532   gint depth;
14533   /* start drawing inside the black outline */
14534   gint x = 1, y = 1;
14535   cairo_surface_t *surface;
14536   gint bin_window_width;
14537   gboolean is_separator = FALSE;
14538   gboolean rtl, allow_rules;
14539   cairo_t *cr;
14540
14541   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14542   g_return_val_if_fail (path != NULL, NULL);
14543
14544   widget = GTK_WIDGET (tree_view);
14545
14546   if (!gtk_widget_get_realized (widget))
14547     return NULL;
14548
14549   depth = gtk_tree_path_get_depth (path);
14550
14551   _gtk_tree_view_find_node (tree_view,
14552                             path,
14553                             &tree,
14554                             &node);
14555
14556   if (tree == NULL)
14557     return NULL;
14558
14559   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14560                                 &iter,
14561                                 path))
14562     return NULL;
14563
14564   context = gtk_widget_get_style_context (widget);
14565
14566   gtk_style_context_save (context);
14567
14568   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14569   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14570
14571   gtk_widget_style_get (widget,
14572                         "allow-rules", &allow_rules,
14573                         NULL);
14574
14575   if (allow_rules && tree_view->priv->has_rules)
14576     {
14577       GtkRegionFlags row_flags;
14578
14579       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14580         row_flags = GTK_REGION_ODD;
14581       else
14582         row_flags = GTK_REGION_EVEN;
14583
14584       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14585     }
14586
14587   is_separator = row_is_separator (tree_view, &iter, NULL);
14588
14589   cell_offset = x;
14590
14591   background_area.y = y;
14592   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14593
14594   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14595
14596   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14597                                                CAIRO_CONTENT_COLOR,
14598                                                bin_window_width + 2,
14599                                                background_area.height + 2);
14600
14601   cr = cairo_create (surface);
14602
14603   gtk_render_background (context, cr, 0, 0,
14604                          bin_window_width + 2,
14605                          background_area.height + 2);
14606
14607   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14608
14609   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14610       list;
14611       list = (rtl ? list->prev : list->next))
14612     {
14613       GtkTreeViewColumn *column = list->data;
14614       GdkRectangle cell_area;
14615       gint vertical_separator;
14616
14617       if (!gtk_tree_view_column_get_visible (column))
14618         continue;
14619
14620       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14621                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14622                                                node->children?TRUE:FALSE);
14623
14624       background_area.x = cell_offset;
14625       background_area.width = gtk_tree_view_column_get_width (column);
14626
14627       gtk_widget_style_get (widget,
14628                             "vertical-separator", &vertical_separator,
14629                             NULL);
14630
14631       cell_area = background_area;
14632
14633       cell_area.y += vertical_separator / 2;
14634       cell_area.height -= vertical_separator;
14635
14636       if (gtk_tree_view_is_expander_column (tree_view, column))
14637         {
14638           if (!rtl)
14639             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14640           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14641
14642           if (gtk_tree_view_draw_expanders (tree_view))
14643             {
14644               int expander_size = gtk_tree_view_get_expander_size (tree_view);
14645               if (!rtl)
14646                 cell_area.x += depth * expander_size;
14647               cell_area.width -= depth * expander_size;
14648             }
14649         }
14650
14651       if (gtk_tree_view_column_cell_is_visible (column))
14652         {
14653           if (is_separator)
14654             {
14655               gtk_style_context_save (context);
14656               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14657
14658               gtk_render_line (context, cr,
14659                                cell_area.x,
14660                                cell_area.y + cell_area.height / 2,
14661                                cell_area.x + cell_area.width,
14662                                cell_area.y + cell_area.height / 2);
14663
14664               gtk_style_context_restore (context);
14665             }
14666           else
14667             {
14668               _gtk_tree_view_column_cell_render (column,
14669                                                  cr,
14670                                                  &background_area,
14671                                                  &cell_area,
14672                                                  0, FALSE);
14673             }
14674         }
14675       cell_offset += gtk_tree_view_column_get_width (column);
14676     }
14677
14678   cairo_set_source_rgb (cr, 0, 0, 0);
14679   cairo_rectangle (cr,
14680                    0.5, 0.5,
14681                    bin_window_width + 1,
14682                    background_area.height + 1);
14683   cairo_set_line_width (cr, 1.0);
14684   cairo_stroke (cr);
14685
14686   cairo_destroy (cr);
14687
14688   cairo_surface_set_device_offset (surface, 2, 2);
14689
14690   gtk_style_context_restore (context);
14691
14692   return surface;
14693 }
14694
14695
14696 /**
14697  * gtk_tree_view_set_destroy_count_func:
14698  * @tree_view: A #GtkTreeView
14699  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14700  * @data: (allow-none): User data to be passed to @func, or %NULL
14701  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14702  *
14703  * This function should almost never be used.  It is meant for private use by
14704  * ATK for determining the number of visible children that are removed when the
14705  * user collapses a row, or a row is deleted.
14706  *
14707  * Deprecated: 3.4: Accessibility does not need the function anymore.
14708  **/
14709 void
14710 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14711                                       GtkTreeDestroyCountFunc  func,
14712                                       gpointer                 data,
14713                                       GDestroyNotify           destroy)
14714 {
14715   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14716
14717   if (tree_view->priv->destroy_count_destroy)
14718     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14719
14720   tree_view->priv->destroy_count_func = func;
14721   tree_view->priv->destroy_count_data = data;
14722   tree_view->priv->destroy_count_destroy = destroy;
14723 }
14724
14725
14726 /*
14727  * Interactive search
14728  */
14729
14730 /**
14731  * gtk_tree_view_set_enable_search:
14732  * @tree_view: A #GtkTreeView
14733  * @enable_search: %TRUE, if the user can search interactively
14734  *
14735  * If @enable_search is set, then the user can type in text to search through
14736  * the tree interactively (this is sometimes called "typeahead find").
14737  *
14738  * Note that even if this is %FALSE, the user can still initiate a search
14739  * using the "start-interactive-search" key binding.
14740  */
14741 void
14742 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14743                                  gboolean     enable_search)
14744 {
14745   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14746
14747   enable_search = !!enable_search;
14748
14749   if (tree_view->priv->enable_search != enable_search)
14750     {
14751        tree_view->priv->enable_search = enable_search;
14752        g_object_notify (G_OBJECT (tree_view), "enable-search");
14753     }
14754 }
14755
14756 /**
14757  * gtk_tree_view_get_enable_search:
14758  * @tree_view: A #GtkTreeView
14759  *
14760  * Returns whether or not the tree allows to start interactive searching
14761  * by typing in text.
14762  *
14763  * Return value: whether or not to let the user search interactively
14764  */
14765 gboolean
14766 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14767 {
14768   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14769
14770   return tree_view->priv->enable_search;
14771 }
14772
14773
14774 /**
14775  * gtk_tree_view_get_search_column:
14776  * @tree_view: A #GtkTreeView
14777  *
14778  * Gets the column searched on by the interactive search code.
14779  *
14780  * Return value: the column the interactive search code searches in.
14781  */
14782 gint
14783 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14784 {
14785   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14786
14787   return (tree_view->priv->search_column);
14788 }
14789
14790 /**
14791  * gtk_tree_view_set_search_column:
14792  * @tree_view: A #GtkTreeView
14793  * @column: the column of the model to search in, or -1 to disable searching
14794  *
14795  * Sets @column as the column where the interactive search code should
14796  * search in for the current model.
14797  *
14798  * If the search column is set, users can use the "start-interactive-search"
14799  * key binding to bring up search popup. The enable-search property controls
14800  * whether simply typing text will also start an interactive search.
14801  *
14802  * Note that @column refers to a column of the current model. The search
14803  * column is reset to -1 when the model is changed.
14804  */
14805 void
14806 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14807                                  gint         column)
14808 {
14809   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14810   g_return_if_fail (column >= -1);
14811
14812   if (tree_view->priv->search_column == column)
14813     return;
14814
14815   tree_view->priv->search_column = column;
14816   g_object_notify (G_OBJECT (tree_view), "search-column");
14817 }
14818
14819 /**
14820  * gtk_tree_view_get_search_equal_func: (skip)
14821  * @tree_view: A #GtkTreeView
14822  *
14823  * Returns the compare function currently in use.
14824  *
14825  * Return value: the currently used compare function for the search code.
14826  */
14827
14828 GtkTreeViewSearchEqualFunc
14829 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14830 {
14831   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14832
14833   return tree_view->priv->search_equal_func;
14834 }
14835
14836 /**
14837  * gtk_tree_view_set_search_equal_func:
14838  * @tree_view: A #GtkTreeView
14839  * @search_equal_func: the compare function to use during the search
14840  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14841  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14842  *
14843  * Sets the compare function for the interactive search capabilities; note
14844  * that somewhat like strcmp() returning 0 for equality
14845  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14846  **/
14847 void
14848 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14849                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14850                                      gpointer                    search_user_data,
14851                                      GDestroyNotify              search_destroy)
14852 {
14853   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14854   g_return_if_fail (search_equal_func != NULL);
14855
14856   if (tree_view->priv->search_destroy)
14857     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14858
14859   tree_view->priv->search_equal_func = search_equal_func;
14860   tree_view->priv->search_user_data = search_user_data;
14861   tree_view->priv->search_destroy = search_destroy;
14862   if (tree_view->priv->search_equal_func == NULL)
14863     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14864 }
14865
14866 /**
14867  * gtk_tree_view_get_search_entry:
14868  * @tree_view: A #GtkTreeView
14869  *
14870  * Returns the #GtkEntry which is currently in use as interactive search
14871  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14872  * will be returned.
14873  *
14874  * Return value: (transfer none): the entry currently in use as search entry.
14875  *
14876  * Since: 2.10
14877  */
14878 GtkEntry *
14879 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14880 {
14881   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14882
14883   if (tree_view->priv->search_custom_entry_set)
14884     return GTK_ENTRY (tree_view->priv->search_entry);
14885
14886   return NULL;
14887 }
14888
14889 /**
14890  * gtk_tree_view_set_search_entry:
14891  * @tree_view: A #GtkTreeView
14892  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14893  *
14894  * Sets the entry which the interactive search code will use for this
14895  * @tree_view.  This is useful when you want to provide a search entry
14896  * in our interface at all time at a fixed position.  Passing %NULL for
14897  * @entry will make the interactive search code use the built-in popup
14898  * entry again.
14899  *
14900  * Since: 2.10
14901  */
14902 void
14903 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14904                                 GtkEntry    *entry)
14905 {
14906   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14907   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14908
14909   if (tree_view->priv->search_custom_entry_set)
14910     {
14911       if (tree_view->priv->search_entry_changed_id)
14912         {
14913           g_signal_handler_disconnect (tree_view->priv->search_entry,
14914                                        tree_view->priv->search_entry_changed_id);
14915           tree_view->priv->search_entry_changed_id = 0;
14916         }
14917       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14918                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14919                                             tree_view);
14920
14921       g_object_unref (tree_view->priv->search_entry);
14922     }
14923   else if (tree_view->priv->search_window)
14924     {
14925       gtk_widget_destroy (tree_view->priv->search_window);
14926
14927       tree_view->priv->search_window = NULL;
14928     }
14929
14930   if (entry)
14931     {
14932       tree_view->priv->search_entry = g_object_ref (entry);
14933       tree_view->priv->search_custom_entry_set = TRUE;
14934
14935       if (tree_view->priv->search_entry_changed_id == 0)
14936         {
14937           tree_view->priv->search_entry_changed_id =
14938             g_signal_connect (tree_view->priv->search_entry, "changed",
14939                               G_CALLBACK (gtk_tree_view_search_init),
14940                               tree_view);
14941         }
14942
14943         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14944                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14945                           tree_view);
14946
14947         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14948     }
14949   else
14950     {
14951       tree_view->priv->search_entry = NULL;
14952       tree_view->priv->search_custom_entry_set = FALSE;
14953     }
14954 }
14955
14956 /**
14957  * gtk_tree_view_set_search_position_func:
14958  * @tree_view: A #GtkTreeView
14959  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14960  *    to use the default search position function
14961  * @data: (allow-none): user data to pass to @func, or %NULL
14962  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14963  *
14964  * Sets the function to use when positioning the search dialog.
14965  *
14966  * Since: 2.10
14967  **/
14968 void
14969 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14970                                         GtkTreeViewSearchPositionFunc  func,
14971                                         gpointer                       user_data,
14972                                         GDestroyNotify                 destroy)
14973 {
14974   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14975
14976   if (tree_view->priv->search_position_destroy)
14977     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14978
14979   tree_view->priv->search_position_func = func;
14980   tree_view->priv->search_position_user_data = user_data;
14981   tree_view->priv->search_position_destroy = destroy;
14982   if (tree_view->priv->search_position_func == NULL)
14983     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14984 }
14985
14986 /**
14987  * gtk_tree_view_get_search_position_func: (skip)
14988  * @tree_view: A #GtkTreeView
14989  *
14990  * Returns the positioning function currently in use.
14991  *
14992  * Return value: the currently used function for positioning the search dialog.
14993  *
14994  * Since: 2.10
14995  */
14996 GtkTreeViewSearchPositionFunc
14997 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14998 {
14999   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15000
15001   return tree_view->priv->search_position_func;
15002 }
15003
15004
15005 static void
15006 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15007                                   GtkTreeView *tree_view,
15008                                   GdkDevice   *device)
15009 {
15010   if (tree_view->priv->disable_popdown)
15011     return;
15012
15013   if (tree_view->priv->search_entry_changed_id)
15014     {
15015       g_signal_handler_disconnect (tree_view->priv->search_entry,
15016                                    tree_view->priv->search_entry_changed_id);
15017       tree_view->priv->search_entry_changed_id = 0;
15018     }
15019   if (tree_view->priv->typeselect_flush_timeout)
15020     {
15021       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15022       tree_view->priv->typeselect_flush_timeout = 0;
15023     }
15024
15025   if (gtk_widget_get_visible (search_dialog))
15026     {
15027       /* send focus-in event */
15028       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15029       gtk_widget_hide (search_dialog);
15030       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15031       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15032     }
15033 }
15034
15035 static void
15036 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15037                                     GtkWidget   *search_dialog,
15038                                     gpointer     user_data)
15039 {
15040   gint x, y;
15041   gint tree_x, tree_y;
15042   gint tree_width, tree_height;
15043   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15044   GdkScreen *screen = gdk_window_get_screen (tree_window);
15045   GtkRequisition requisition;
15046   gint monitor_num;
15047   GdkRectangle monitor;
15048
15049   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15050   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
15051
15052   gtk_widget_realize (search_dialog);
15053
15054   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15055   tree_width = gdk_window_get_width (tree_window);
15056   tree_height = gdk_window_get_height (tree_window);
15057   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15058
15059   if (tree_x + tree_width > gdk_screen_get_width (screen))
15060     x = gdk_screen_get_width (screen) - requisition.width;
15061   else if (tree_x + tree_width - requisition.width < 0)
15062     x = 0;
15063   else
15064     x = tree_x + tree_width - requisition.width;
15065
15066   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15067     y = gdk_screen_get_height (screen) - requisition.height;
15068   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15069     y = 0;
15070   else
15071     y = tree_y + tree_height;
15072
15073   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15074 }
15075
15076 static void
15077 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15078                                       GtkMenu  *menu,
15079                                       gpointer  data)
15080 {
15081   GtkTreeView *tree_view = (GtkTreeView *)data;
15082
15083   tree_view->priv->disable_popdown = 1;
15084   g_signal_connect (menu, "hide",
15085                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15086 }
15087
15088 /* Because we're visible but offscreen, we just set a flag in the preedit
15089  * callback.
15090  */
15091 static void
15092 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15093                                       GtkTreeView  *tree_view)
15094 {
15095   tree_view->priv->imcontext_changed = 1;
15096   if (tree_view->priv->typeselect_flush_timeout)
15097     {
15098       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15099       tree_view->priv->typeselect_flush_timeout =
15100         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15101                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15102                        tree_view);
15103     }
15104
15105 }
15106
15107 static void
15108 gtk_tree_view_search_activate (GtkEntry    *entry,
15109                                GtkTreeView *tree_view)
15110 {
15111   GtkTreePath *path;
15112
15113   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15114                                     tree_view,
15115                                     gtk_get_current_event_device ());
15116
15117   /* If we have a row selected and it's the cursor row, we activate
15118    * the row XXX */
15119   if (tree_view->priv->cursor_node &&
15120       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15121     {
15122       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15123                                              tree_view->priv->cursor_node);
15124
15125       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15126
15127       gtk_tree_path_free (path);
15128     }
15129 }
15130
15131 static gboolean
15132 gtk_tree_view_real_search_enable_popdown (gpointer data)
15133 {
15134   GtkTreeView *tree_view = (GtkTreeView *)data;
15135
15136   tree_view->priv->disable_popdown = 0;
15137
15138   return FALSE;
15139 }
15140
15141 static void
15142 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15143                                      gpointer   data)
15144 {
15145   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15146 }
15147
15148 static gboolean
15149 gtk_tree_view_search_delete_event (GtkWidget *widget,
15150                                    GdkEventAny *event,
15151                                    GtkTreeView *tree_view)
15152 {
15153   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15154
15155   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15156
15157   return TRUE;
15158 }
15159
15160 static gboolean
15161 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15162                                          GdkEventButton *event,
15163                                          GtkTreeView *tree_view)
15164 {
15165   GdkDevice *keyb_device;
15166
15167   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15168
15169   keyb_device = gdk_device_get_associated_device (event->device);
15170   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15171
15172   if (event->window == tree_view->priv->bin_window)
15173     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15174
15175   return TRUE;
15176 }
15177
15178 static gboolean
15179 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15180                                    GdkEventScroll *event,
15181                                    GtkTreeView *tree_view)
15182 {
15183   gboolean retval = FALSE;
15184
15185   if (event->direction == GDK_SCROLL_UP)
15186     {
15187       gtk_tree_view_search_move (widget, tree_view, TRUE);
15188       retval = TRUE;
15189     }
15190   else if (event->direction == GDK_SCROLL_DOWN)
15191     {
15192       gtk_tree_view_search_move (widget, tree_view, FALSE);
15193       retval = TRUE;
15194     }
15195
15196   /* renew the flush timeout */
15197   if (retval && tree_view->priv->typeselect_flush_timeout
15198       && !tree_view->priv->search_custom_entry_set)
15199     {
15200       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15201       tree_view->priv->typeselect_flush_timeout =
15202         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15203                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15204                        tree_view);
15205     }
15206
15207   return retval;
15208 }
15209
15210 static gboolean
15211 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15212                                       GdkEventKey *event,
15213                                       GtkTreeView *tree_view)
15214 {
15215   GdkModifierType default_accel;
15216   gboolean        retval = FALSE;
15217
15218   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15219   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15220
15221   /* close window and cancel the search */
15222   if (!tree_view->priv->search_custom_entry_set
15223       && (event->keyval == GDK_KEY_Escape ||
15224           event->keyval == GDK_KEY_Tab ||
15225             event->keyval == GDK_KEY_KP_Tab ||
15226             event->keyval == GDK_KEY_ISO_Left_Tab))
15227     {
15228       gtk_tree_view_search_dialog_hide (widget, tree_view,
15229                                         gdk_event_get_device ((GdkEvent *) event));
15230       return TRUE;
15231     }
15232
15233   default_accel = gtk_widget_get_modifier_mask (widget,
15234                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15235
15236   /* select previous matching iter */
15237   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15238     {
15239       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15240         gtk_widget_error_bell (widget);
15241
15242       retval = TRUE;
15243     }
15244
15245   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15246       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15247     {
15248       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15249         gtk_widget_error_bell (widget);
15250
15251       retval = TRUE;
15252     }
15253
15254   /* select next matching iter */
15255   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15256     {
15257       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15258         gtk_widget_error_bell (widget);
15259
15260       retval = TRUE;
15261     }
15262
15263   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15264       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15265     {
15266       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15267         gtk_widget_error_bell (widget);
15268
15269       retval = TRUE;
15270     }
15271
15272   /* renew the flush timeout */
15273   if (retval && tree_view->priv->typeselect_flush_timeout
15274       && !tree_view->priv->search_custom_entry_set)
15275     {
15276       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15277       tree_view->priv->typeselect_flush_timeout =
15278         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15279                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15280                        tree_view);
15281     }
15282
15283   return retval;
15284 }
15285
15286 /*  this function returns FALSE if there is a search string but
15287  *  nothing was found, and TRUE otherwise.
15288  */
15289 static gboolean
15290 gtk_tree_view_search_move (GtkWidget   *window,
15291                            GtkTreeView *tree_view,
15292                            gboolean     up)
15293 {
15294   gboolean ret;
15295   gint len;
15296   gint count = 0;
15297   const gchar *text;
15298   GtkTreeIter iter;
15299   GtkTreeModel *model;
15300   GtkTreeSelection *selection;
15301
15302   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15303
15304   g_return_val_if_fail (text != NULL, FALSE);
15305
15306   len = strlen (text);
15307
15308   if (up && tree_view->priv->selected_iter == 1)
15309     return strlen (text) < 1;
15310
15311   len = strlen (text);
15312
15313   if (len < 1)
15314     return TRUE;
15315
15316   model = gtk_tree_view_get_model (tree_view);
15317   selection = gtk_tree_view_get_selection (tree_view);
15318
15319   /* search */
15320   gtk_tree_selection_unselect_all (selection);
15321   if (!gtk_tree_model_get_iter_first (model, &iter))
15322     return TRUE;
15323
15324   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15325                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15326
15327   if (ret)
15328     {
15329       /* found */
15330       tree_view->priv->selected_iter += up?(-1):(1);
15331       return TRUE;
15332     }
15333   else
15334     {
15335       /* return to old iter */
15336       count = 0;
15337       gtk_tree_model_get_iter_first (model, &iter);
15338       gtk_tree_view_search_iter (model, selection,
15339                                  &iter, text,
15340                                  &count, tree_view->priv->selected_iter);
15341       return FALSE;
15342     }
15343 }
15344
15345 static gboolean
15346 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15347                                  gint          column,
15348                                  const gchar  *key,
15349                                  GtkTreeIter  *iter,
15350                                  gpointer      search_data)
15351 {
15352   gboolean retval = TRUE;
15353   const gchar *str;
15354   gchar *normalized_string;
15355   gchar *normalized_key;
15356   gchar *case_normalized_string = NULL;
15357   gchar *case_normalized_key = NULL;
15358   GValue value = G_VALUE_INIT;
15359   GValue transformed = G_VALUE_INIT;
15360
15361   gtk_tree_model_get_value (model, iter, column, &value);
15362
15363   g_value_init (&transformed, G_TYPE_STRING);
15364
15365   if (!g_value_transform (&value, &transformed))
15366     {
15367       g_value_unset (&value);
15368       return TRUE;
15369     }
15370
15371   g_value_unset (&value);
15372
15373   str = g_value_get_string (&transformed);
15374   if (!str)
15375     {
15376       g_value_unset (&transformed);
15377       return TRUE;
15378     }
15379
15380   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15381   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15382
15383   if (normalized_string && normalized_key)
15384     {
15385       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15386       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15387
15388       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15389         retval = FALSE;
15390     }
15391
15392   g_value_unset (&transformed);
15393   g_free (normalized_key);
15394   g_free (normalized_string);
15395   g_free (case_normalized_key);
15396   g_free (case_normalized_string);
15397
15398   return retval;
15399 }
15400
15401 static gboolean
15402 gtk_tree_view_search_iter (GtkTreeModel     *model,
15403                            GtkTreeSelection *selection,
15404                            GtkTreeIter      *iter,
15405                            const gchar      *text,
15406                            gint             *count,
15407                            gint              n)
15408 {
15409   GtkRBTree *tree = NULL;
15410   GtkRBNode *node = NULL;
15411   GtkTreePath *path;
15412
15413   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15414
15415   path = gtk_tree_model_get_path (model, iter);
15416   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15417
15418   do
15419     {
15420       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15421         {
15422           (*count)++;
15423           if (*count == n)
15424             {
15425               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15426                                             TRUE, 0.5, 0.0);
15427               gtk_tree_selection_select_iter (selection, iter);
15428               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15429
15430               if (path)
15431                 gtk_tree_path_free (path);
15432
15433               return TRUE;
15434             }
15435         }
15436
15437       if (node->children)
15438         {
15439           gboolean has_child;
15440           GtkTreeIter tmp;
15441
15442           tree = node->children;
15443           node = _gtk_rbtree_first (tree);
15444
15445           tmp = *iter;
15446           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15447           gtk_tree_path_down (path);
15448
15449           /* sanity check */
15450           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15451         }
15452       else
15453         {
15454           gboolean done = FALSE;
15455
15456           do
15457             {
15458               node = _gtk_rbtree_next (tree, node);
15459
15460               if (node)
15461                 {
15462                   gboolean has_next;
15463
15464                   has_next = gtk_tree_model_iter_next (model, iter);
15465
15466                   done = TRUE;
15467                   gtk_tree_path_next (path);
15468
15469                   /* sanity check */
15470                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15471                 }
15472               else
15473                 {
15474                   gboolean has_parent;
15475                   GtkTreeIter tmp_iter = *iter;
15476
15477                   node = tree->parent_node;
15478                   tree = tree->parent_tree;
15479
15480                   if (!tree)
15481                     {
15482                       if (path)
15483                         gtk_tree_path_free (path);
15484
15485                       /* we've run out of tree, done with this func */
15486                       return FALSE;
15487                     }
15488
15489                   has_parent = gtk_tree_model_iter_parent (model,
15490                                                            iter,
15491                                                            &tmp_iter);
15492                   gtk_tree_path_up (path);
15493
15494                   /* sanity check */
15495                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15496                 }
15497             }
15498           while (!done);
15499         }
15500     }
15501   while (1);
15502
15503   return FALSE;
15504 }
15505
15506 static void
15507 gtk_tree_view_search_init (GtkWidget   *entry,
15508                            GtkTreeView *tree_view)
15509 {
15510   gint ret;
15511   gint count = 0;
15512   const gchar *text;
15513   GtkTreeIter iter;
15514   GtkTreeModel *model;
15515   GtkTreeSelection *selection;
15516
15517   g_return_if_fail (GTK_IS_ENTRY (entry));
15518   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15519
15520   text = gtk_entry_get_text (GTK_ENTRY (entry));
15521
15522   model = gtk_tree_view_get_model (tree_view);
15523   selection = gtk_tree_view_get_selection (tree_view);
15524
15525   /* search */
15526   gtk_tree_selection_unselect_all (selection);
15527   if (tree_view->priv->typeselect_flush_timeout
15528       && !tree_view->priv->search_custom_entry_set)
15529     {
15530       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15531       tree_view->priv->typeselect_flush_timeout =
15532         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15533                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15534                        tree_view);
15535     }
15536
15537   if (*text == '\0')
15538     return;
15539
15540   if (!gtk_tree_model_get_iter_first (model, &iter))
15541     return;
15542
15543   ret = gtk_tree_view_search_iter (model, selection,
15544                                    &iter, text,
15545                                    &count, 1);
15546
15547   if (ret)
15548     tree_view->priv->selected_iter = 1;
15549 }
15550
15551 void
15552 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15553                                 GtkTreeViewColumn *column,
15554                                 GtkCellEditable   *cell_editable)
15555 {
15556   if (tree_view->priv->edited_column == NULL)
15557     return;
15558
15559   g_return_if_fail (column == tree_view->priv->edited_column);
15560
15561   tree_view->priv->edited_column = NULL;
15562
15563   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15564     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15565
15566   gtk_container_remove (GTK_CONTAINER (tree_view),
15567                         GTK_WIDGET (cell_editable));
15568
15569   /* FIXME should only redraw a single node */
15570   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15571 }
15572
15573 static gboolean
15574 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15575                              GtkTreePath *cursor_path,
15576                              gboolean     edit_only)
15577 {
15578   GtkTreeIter iter;
15579   GdkRectangle cell_area;
15580   GtkTreeViewColumn *focus_column;
15581   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15582   gint retval = FALSE;
15583   GtkRBTree *cursor_tree;
15584   GtkRBNode *cursor_node;
15585
15586   g_assert (tree_view->priv->focus_column);
15587   focus_column = tree_view->priv->focus_column;
15588
15589   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15590     return FALSE;
15591
15592   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15593       cursor_node == NULL)
15594     return FALSE;
15595
15596   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15597
15598   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15599
15600   gtk_tree_view_column_cell_set_cell_data (focus_column,
15601                                            tree_view->priv->model,
15602                                            &iter,
15603                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15604                                            cursor_node->children ? TRUE : FALSE);
15605   gtk_tree_view_get_cell_area (tree_view,
15606                                cursor_path,
15607                                focus_column,
15608                                &cell_area);
15609
15610   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15611                               _gtk_tree_view_column_get_context (focus_column),
15612                               GTK_WIDGET (tree_view),
15613                               &cell_area,
15614                               flags, edit_only))
15615     retval = TRUE;
15616
15617   return retval;
15618 }
15619
15620 void
15621 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15622                              GtkTreeViewColumn *column,
15623                              GtkTreePath       *path,
15624                              GtkCellEditable   *cell_editable,
15625                              GdkRectangle      *cell_area)
15626 {
15627   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15628   GtkRequisition requisition;
15629
15630   tree_view->priv->edited_column = column;
15631
15632   gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15633   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15634
15635   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15636                                  &requisition, NULL);
15637
15638   tree_view->priv->draw_keyfocus = TRUE;
15639
15640   if (requisition.height < cell_area->height)
15641     {
15642       gint diff = cell_area->height - requisition.height;
15643       gtk_tree_view_put (tree_view,
15644                          GTK_WIDGET (cell_editable),
15645                          cell_area->x, cell_area->y + diff/2,
15646                          cell_area->width, requisition.height);
15647     }
15648   else
15649     {
15650       gtk_tree_view_put (tree_view,
15651                          GTK_WIDGET (cell_editable),
15652                          cell_area->x, cell_area->y,
15653                          cell_area->width, cell_area->height);
15654     }
15655 }
15656
15657 static void
15658 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15659                             gboolean     cancel_editing)
15660 {
15661   GtkTreeViewColumn *column;
15662
15663   if (tree_view->priv->edited_column == NULL)
15664     return;
15665
15666   /*
15667    * This is very evil. We need to do this, because
15668    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15669    * later on. If gtk_tree_view_row_changed notices
15670    * tree_view->priv->edited_column != NULL, it'll call
15671    * gtk_tree_view_stop_editing again. Bad things will happen then.
15672    *
15673    * Please read that again if you intend to modify anything here.
15674    */
15675
15676   column = tree_view->priv->edited_column;
15677   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15678   tree_view->priv->edited_column = NULL;
15679 }
15680
15681
15682 /**
15683  * gtk_tree_view_set_hover_selection:
15684  * @tree_view: a #GtkTreeView
15685  * @hover: %TRUE to enable hover selection mode
15686  *
15687  * Enables or disables the hover selection mode of @tree_view.
15688  * Hover selection makes the selected row follow the pointer.
15689  * Currently, this works only for the selection modes
15690  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15691  *
15692  * Since: 2.6
15693  **/
15694 void
15695 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15696                                    gboolean     hover)
15697 {
15698   hover = hover != FALSE;
15699
15700   if (hover != tree_view->priv->hover_selection)
15701     {
15702       tree_view->priv->hover_selection = hover;
15703
15704       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15705     }
15706 }
15707
15708 /**
15709  * gtk_tree_view_get_hover_selection:
15710  * @tree_view: a #GtkTreeView
15711  *
15712  * Returns whether hover selection mode is turned on for @tree_view.
15713  *
15714  * Return value: %TRUE if @tree_view is in hover selection mode
15715  *
15716  * Since: 2.6
15717  **/
15718 gboolean
15719 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15720 {
15721   return tree_view->priv->hover_selection;
15722 }
15723
15724 /**
15725  * gtk_tree_view_set_hover_expand:
15726  * @tree_view: a #GtkTreeView
15727  * @expand: %TRUE to enable hover selection mode
15728  *
15729  * Enables or disables the hover expansion mode of @tree_view.
15730  * Hover expansion makes rows expand or collapse if the pointer
15731  * moves over them.
15732  *
15733  * Since: 2.6
15734  **/
15735 void
15736 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15737                                 gboolean     expand)
15738 {
15739   expand = expand != FALSE;
15740
15741   if (expand != tree_view->priv->hover_expand)
15742     {
15743       tree_view->priv->hover_expand = expand;
15744
15745       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15746     }
15747 }
15748
15749 /**
15750  * gtk_tree_view_get_hover_expand:
15751  * @tree_view: a #GtkTreeView
15752  *
15753  * Returns whether hover expansion mode is turned on for @tree_view.
15754  *
15755  * Return value: %TRUE if @tree_view is in hover expansion mode
15756  *
15757  * Since: 2.6
15758  **/
15759 gboolean
15760 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15761 {
15762   return tree_view->priv->hover_expand;
15763 }
15764
15765 /**
15766  * gtk_tree_view_set_rubber_banding:
15767  * @tree_view: a #GtkTreeView
15768  * @enable: %TRUE to enable rubber banding
15769  *
15770  * Enables or disables rubber banding in @tree_view.  If the selection mode
15771  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15772  * multiple rows by dragging the mouse.
15773  *
15774  * Since: 2.10
15775  **/
15776 void
15777 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15778                                   gboolean     enable)
15779 {
15780   enable = enable != FALSE;
15781
15782   if (enable != tree_view->priv->rubber_banding_enable)
15783     {
15784       tree_view->priv->rubber_banding_enable = enable;
15785
15786       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15787     }
15788 }
15789
15790 /**
15791  * gtk_tree_view_get_rubber_banding:
15792  * @tree_view: a #GtkTreeView
15793  *
15794  * Returns whether rubber banding is turned on for @tree_view.  If the
15795  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15796  * user to select multiple rows by dragging the mouse.
15797  *
15798  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15799  *
15800  * Since: 2.10
15801  **/
15802 gboolean
15803 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15804 {
15805   return tree_view->priv->rubber_banding_enable;
15806 }
15807
15808 /**
15809  * gtk_tree_view_is_rubber_banding_active:
15810  * @tree_view: a #GtkTreeView
15811  *
15812  * Returns whether a rubber banding operation is currently being done
15813  * in @tree_view.
15814  *
15815  * Return value: %TRUE if a rubber banding operation is currently being
15816  * done in @tree_view.
15817  *
15818  * Since: 2.12
15819  **/
15820 gboolean
15821 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15822 {
15823   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15824
15825   if (tree_view->priv->rubber_banding_enable
15826       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15827     return TRUE;
15828
15829   return FALSE;
15830 }
15831
15832 /**
15833  * gtk_tree_view_get_row_separator_func: (skip)
15834  * @tree_view: a #GtkTreeView
15835  *
15836  * Returns the current row separator function.
15837  *
15838  * Return value: the current row separator function.
15839  *
15840  * Since: 2.6
15841  **/
15842 GtkTreeViewRowSeparatorFunc
15843 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15844 {
15845   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15846
15847   return tree_view->priv->row_separator_func;
15848 }
15849
15850 /**
15851  * gtk_tree_view_set_row_separator_func:
15852  * @tree_view: a #GtkTreeView
15853  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15854  * @data: (allow-none): user data to pass to @func, or %NULL
15855  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15856  *
15857  * Sets the row separator function, which is used to determine
15858  * whether a row should be drawn as a separator. If the row separator
15859  * function is %NULL, no separators are drawn. This is the default value.
15860  *
15861  * Since: 2.6
15862  **/
15863 void
15864 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15865                                       GtkTreeViewRowSeparatorFunc  func,
15866                                       gpointer                     data,
15867                                       GDestroyNotify               destroy)
15868 {
15869   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15870
15871   if (tree_view->priv->row_separator_destroy)
15872     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15873
15874   tree_view->priv->row_separator_func = func;
15875   tree_view->priv->row_separator_data = data;
15876   tree_view->priv->row_separator_destroy = destroy;
15877
15878   /* Have the tree recalculate heights */
15879   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15880   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15881 }
15882
15883
15884 static void
15885 gtk_tree_view_grab_notify (GtkWidget *widget,
15886                            gboolean   was_grabbed)
15887 {
15888   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15889
15890   tree_view->priv->in_grab = !was_grabbed;
15891
15892   if (!was_grabbed)
15893     {
15894       tree_view->priv->pressed_button = -1;
15895
15896       if (tree_view->priv->rubber_band_status)
15897         gtk_tree_view_stop_rubber_band (tree_view);
15898     }
15899 }
15900
15901 static void
15902 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15903                                    GtkStateFlags  previous_state)
15904 {
15905   if (gtk_widget_get_realized (widget))
15906     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15907
15908   gtk_widget_queue_draw (widget);
15909 }
15910
15911 /**
15912  * gtk_tree_view_get_grid_lines:
15913  * @tree_view: a #GtkTreeView
15914  *
15915  * Returns which grid lines are enabled in @tree_view.
15916  *
15917  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15918  * are enabled.
15919  *
15920  * Since: 2.10
15921  */
15922 GtkTreeViewGridLines
15923 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15924 {
15925   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15926
15927   return tree_view->priv->grid_lines;
15928 }
15929
15930 /**
15931  * gtk_tree_view_set_grid_lines:
15932  * @tree_view: a #GtkTreeView
15933  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15934  * enable.
15935  *
15936  * Sets which grid lines to draw in @tree_view.
15937  *
15938  * Since: 2.10
15939  */
15940 void
15941 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15942                               GtkTreeViewGridLines   grid_lines)
15943 {
15944   GtkTreeViewPrivate *priv;
15945   GtkWidget *widget;
15946   GtkTreeViewGridLines old_grid_lines;
15947
15948   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15949
15950   priv = tree_view->priv;
15951   widget = GTK_WIDGET (tree_view);
15952
15953   old_grid_lines = priv->grid_lines;
15954   priv->grid_lines = grid_lines;
15955
15956   if (gtk_widget_get_realized (widget))
15957     {
15958       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15959           priv->grid_line_width)
15960         {
15961           priv->grid_line_width = 0;
15962         }
15963
15964       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15965           !priv->grid_line_width)
15966         {
15967           gint8 *dash_list;
15968
15969           gtk_widget_style_get (widget,
15970                                 "grid-line-width", &priv->grid_line_width,
15971                                 "grid-line-pattern", (gchar *)&dash_list,
15972                                 NULL);
15973
15974           if (dash_list)
15975             {
15976               priv->grid_line_dashes[0] = dash_list[0];
15977               if (dash_list[0])
15978                 priv->grid_line_dashes[1] = dash_list[1];
15979
15980               g_free (dash_list);
15981             }
15982           else
15983             {
15984               priv->grid_line_dashes[0] = 1;
15985               priv->grid_line_dashes[1] = 1;
15986             }
15987         }
15988     }
15989
15990   if (old_grid_lines != grid_lines)
15991     {
15992       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15993
15994       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15995     }
15996 }
15997
15998 /**
15999  * gtk_tree_view_get_enable_tree_lines:
16000  * @tree_view: a #GtkTreeView.
16001  *
16002  * Returns whether or not tree lines are drawn in @tree_view.
16003  *
16004  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
16005  * otherwise.
16006  *
16007  * Since: 2.10
16008  */
16009 gboolean
16010 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16011 {
16012   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16013
16014   return tree_view->priv->tree_lines_enabled;
16015 }
16016
16017 /**
16018  * gtk_tree_view_set_enable_tree_lines:
16019  * @tree_view: a #GtkTreeView
16020  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16021  *
16022  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16023  * This does not have any visible effects for lists.
16024  *
16025  * Since: 2.10
16026  */
16027 void
16028 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16029                                      gboolean     enabled)
16030 {
16031   GtkTreeViewPrivate *priv;
16032   GtkWidget *widget;
16033   gboolean was_enabled;
16034
16035   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16036
16037   enabled = enabled != FALSE;
16038
16039   priv = tree_view->priv;
16040   widget = GTK_WIDGET (tree_view);
16041
16042   was_enabled = priv->tree_lines_enabled;
16043
16044   priv->tree_lines_enabled = enabled;
16045
16046   if (gtk_widget_get_realized (widget))
16047     {
16048       if (!enabled && priv->tree_line_width)
16049         {
16050           priv->tree_line_width = 0;
16051         }
16052
16053       if (enabled && !priv->tree_line_width)
16054         {
16055           gint8 *dash_list;
16056           gtk_widget_style_get (widget,
16057                                 "tree-line-width", &priv->tree_line_width,
16058                                 "tree-line-pattern", (gchar *)&dash_list,
16059                                 NULL);
16060
16061           if (dash_list)
16062             {
16063               priv->tree_line_dashes[0] = dash_list[0];
16064               if (dash_list[0])
16065                 priv->tree_line_dashes[1] = dash_list[1];
16066
16067               g_free (dash_list);
16068             }
16069           else
16070             {
16071               priv->tree_line_dashes[0] = 1;
16072               priv->tree_line_dashes[1] = 1;
16073             }
16074         }
16075     }
16076
16077   if (was_enabled != enabled)
16078     {
16079       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16080
16081       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16082     }
16083 }
16084
16085
16086 /**
16087  * gtk_tree_view_set_show_expanders:
16088  * @tree_view: a #GtkTreeView
16089  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16090  *
16091  * Sets whether to draw and enable expanders and indent child rows in
16092  * @tree_view.  When disabled there will be no expanders visible in trees
16093  * and there will be no way to expand and collapse rows by default.  Also
16094  * note that hiding the expanders will disable the default indentation.  You
16095  * can set a custom indentation in this case using
16096  * gtk_tree_view_set_level_indentation().
16097  * This does not have any visible effects for lists.
16098  *
16099  * Since: 2.12
16100  */
16101 void
16102 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16103                                   gboolean     enabled)
16104 {
16105   gboolean was_enabled;
16106
16107   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16108
16109   enabled = enabled != FALSE;
16110   was_enabled = tree_view->priv->show_expanders;
16111
16112   tree_view->priv->show_expanders = enabled == TRUE;
16113
16114   if (enabled != was_enabled)
16115     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16116 }
16117
16118 /**
16119  * gtk_tree_view_get_show_expanders:
16120  * @tree_view: a #GtkTreeView.
16121  *
16122  * Returns whether or not expanders are drawn in @tree_view.
16123  *
16124  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16125  * otherwise.
16126  *
16127  * Since: 2.12
16128  */
16129 gboolean
16130 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16131 {
16132   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16133
16134   return tree_view->priv->show_expanders;
16135 }
16136
16137 /**
16138  * gtk_tree_view_set_level_indentation:
16139  * @tree_view: a #GtkTreeView
16140  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16141  *
16142  * Sets the amount of extra indentation for child levels to use in @tree_view
16143  * in addition to the default indentation.  The value should be specified in
16144  * pixels, a value of 0 disables this feature and in this case only the default
16145  * indentation will be used.
16146  * This does not have any visible effects for lists.
16147  *
16148  * Since: 2.12
16149  */
16150 void
16151 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16152                                      gint         indentation)
16153 {
16154   tree_view->priv->level_indentation = indentation;
16155
16156   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16157 }
16158
16159 /**
16160  * gtk_tree_view_get_level_indentation:
16161  * @tree_view: a #GtkTreeView.
16162  *
16163  * Returns the amount, in pixels, of extra indentation for child levels
16164  * in @tree_view.
16165  *
16166  * Return value: the amount of extra indentation for child levels in
16167  * @tree_view.  A return value of 0 means that this feature is disabled.
16168  *
16169  * Since: 2.12
16170  */
16171 gint
16172 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16173 {
16174   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16175
16176   return tree_view->priv->level_indentation;
16177 }
16178
16179 /**
16180  * gtk_tree_view_set_tooltip_row:
16181  * @tree_view: a #GtkTreeView
16182  * @tooltip: a #GtkTooltip
16183  * @path: a #GtkTreePath
16184  *
16185  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16186  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16187  * See also gtk_tooltip_set_tip_area().
16188  *
16189  * Since: 2.12
16190  */
16191 void
16192 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16193                                GtkTooltip  *tooltip,
16194                                GtkTreePath *path)
16195 {
16196   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16197   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16198
16199   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16200 }
16201
16202 /**
16203  * gtk_tree_view_set_tooltip_cell:
16204  * @tree_view: a #GtkTreeView
16205  * @tooltip: a #GtkTooltip
16206  * @path: (allow-none): a #GtkTreePath or %NULL
16207  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16208  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16209  *
16210  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16211  * in common.  For example if @path is %NULL and @column is set, the tip
16212  * area will be set to the full area covered by @column.  See also
16213  * gtk_tooltip_set_tip_area().
16214  *
16215  * Note that if @path is not specified and @cell is set and part of a column
16216  * containing the expander, the tooltip might not show and hide at the correct
16217  * position.  In such cases @path must be set to the current node under the
16218  * mouse cursor for this function to operate correctly.
16219  *
16220  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16221  *
16222  * Since: 2.12
16223  */
16224 void
16225 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16226                                 GtkTooltip        *tooltip,
16227                                 GtkTreePath       *path,
16228                                 GtkTreeViewColumn *column,
16229                                 GtkCellRenderer   *cell)
16230 {
16231   GtkAllocation allocation;
16232   GdkRectangle rect;
16233
16234   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16235   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16236   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16237   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16238
16239   /* Determine x values. */
16240   if (column && cell)
16241     {
16242       GdkRectangle tmp;
16243       gint start, width;
16244
16245       /* We always pass in path here, whether it is NULL or not.
16246        * For cells in expander columns path must be specified so that
16247        * we can correctly account for the indentation.  This also means
16248        * that the tooltip is constrained vertically by the "Determine y
16249        * values" code below; this is not a real problem since cells actually
16250        * don't stretch vertically in constrast to columns.
16251        */
16252       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16253       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16254
16255       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16256                                                          tmp.x + start, 0,
16257                                                          &rect.x, NULL);
16258       rect.width = width;
16259     }
16260   else if (column)
16261     {
16262       GdkRectangle tmp;
16263
16264       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16265       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16266                                                          tmp.x, 0,
16267                                                          &rect.x, NULL);
16268       rect.width = tmp.width;
16269     }
16270   else
16271     {
16272       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16273       rect.x = 0;
16274       rect.width = allocation.width;
16275     }
16276
16277   /* Determine y values. */
16278   if (path)
16279     {
16280       GdkRectangle tmp;
16281
16282       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16283       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16284                                                          0, tmp.y,
16285                                                          NULL, &rect.y);
16286       rect.height = tmp.height;
16287     }
16288   else
16289     {
16290       rect.y = 0;
16291       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16292     }
16293
16294   gtk_tooltip_set_tip_area (tooltip, &rect);
16295 }
16296
16297 /**
16298  * gtk_tree_view_get_tooltip_context:
16299  * @tree_view: a #GtkTreeView
16300  * @x: (inout): the x coordinate (relative to widget coordinates)
16301  * @y: (inout): the y coordinate (relative to widget coordinates)
16302  * @keyboard_tip: whether this is a keyboard tooltip or not
16303  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16304  *         #GtkTreeModel or %NULL
16305  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16306  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16307  *
16308  * This function is supposed to be used in a #GtkWidget::query-tooltip
16309  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16310  * which are received in the signal handler, should be passed to this
16311  * function without modification.
16312  *
16313  * The return value indicates whether there is a tree view row at the given
16314  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16315  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16316  * @model, @path and @iter which have been provided will be set to point to
16317  * that row and the corresponding model.  @x and @y will always be converted
16318  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16319  *
16320  * Return value: whether or not the given tooltip context points to a row.
16321  *
16322  * Since: 2.12
16323  */
16324 gboolean
16325 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16326                                    gint          *x,
16327                                    gint          *y,
16328                                    gboolean       keyboard_tip,
16329                                    GtkTreeModel **model,
16330                                    GtkTreePath  **path,
16331                                    GtkTreeIter   *iter)
16332 {
16333   GtkTreePath *tmppath = NULL;
16334
16335   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16336   g_return_val_if_fail (x != NULL, FALSE);
16337   g_return_val_if_fail (y != NULL, FALSE);
16338
16339   if (keyboard_tip)
16340     {
16341       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16342
16343       if (!tmppath)
16344         return FALSE;
16345     }
16346   else
16347     {
16348       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16349                                                          x, y);
16350
16351       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16352                                           &tmppath, NULL, NULL, NULL))
16353         return FALSE;
16354     }
16355
16356   if (model)
16357     *model = gtk_tree_view_get_model (tree_view);
16358
16359   if (iter)
16360     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16361                              iter, tmppath);
16362
16363   if (path)
16364     *path = tmppath;
16365   else
16366     gtk_tree_path_free (tmppath);
16367
16368   return TRUE;
16369 }
16370
16371 static gboolean
16372 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16373                                     gint        x,
16374                                     gint        y,
16375                                     gboolean    keyboard_tip,
16376                                     GtkTooltip *tooltip,
16377                                     gpointer    data)
16378 {
16379   GValue value = G_VALUE_INIT;
16380   GValue transformed = G_VALUE_INIT;
16381   GtkTreeIter iter;
16382   GtkTreePath *path;
16383   GtkTreeModel *model;
16384   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16385
16386   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16387                                           &x, &y,
16388                                           keyboard_tip,
16389                                           &model, &path, &iter))
16390     return FALSE;
16391
16392   gtk_tree_model_get_value (model, &iter,
16393                             tree_view->priv->tooltip_column, &value);
16394
16395   g_value_init (&transformed, G_TYPE_STRING);
16396
16397   if (!g_value_transform (&value, &transformed))
16398     {
16399       g_value_unset (&value);
16400       gtk_tree_path_free (path);
16401
16402       return FALSE;
16403     }
16404
16405   g_value_unset (&value);
16406
16407   if (!g_value_get_string (&transformed))
16408     {
16409       g_value_unset (&transformed);
16410       gtk_tree_path_free (path);
16411
16412       return FALSE;
16413     }
16414
16415   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16416   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16417
16418   gtk_tree_path_free (path);
16419   g_value_unset (&transformed);
16420
16421   return TRUE;
16422 }
16423
16424 /**
16425  * gtk_tree_view_set_tooltip_column:
16426  * @tree_view: a #GtkTreeView
16427  * @column: an integer, which is a valid column number for @tree_view's model
16428  *
16429  * If you only plan to have simple (text-only) tooltips on full rows, you
16430  * can use this function to have #GtkTreeView handle these automatically
16431  * for you. @column should be set to the column in @tree_view's model
16432  * containing the tooltip texts, or -1 to disable this feature.
16433  *
16434  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16435  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16436  *
16437  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16438  * so &amp;, &lt;, etc have to be escaped in the text.
16439  *
16440  * Since: 2.12
16441  */
16442 void
16443 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16444                                   gint         column)
16445 {
16446   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16447
16448   if (column == tree_view->priv->tooltip_column)
16449     return;
16450
16451   if (column == -1)
16452     {
16453       g_signal_handlers_disconnect_by_func (tree_view,
16454                                             gtk_tree_view_set_tooltip_query_cb,
16455                                             NULL);
16456       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16457     }
16458   else
16459     {
16460       if (tree_view->priv->tooltip_column == -1)
16461         {
16462           g_signal_connect (tree_view, "query-tooltip",
16463                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16464           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16465         }
16466     }
16467
16468   tree_view->priv->tooltip_column = column;
16469   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16470 }
16471
16472 /**
16473  * gtk_tree_view_get_tooltip_column:
16474  * @tree_view: a #GtkTreeView
16475  *
16476  * Returns the column of @tree_view's model which is being used for
16477  * displaying tooltips on @tree_view's rows.
16478  *
16479  * Return value: the index of the tooltip column that is currently being
16480  * used, or -1 if this is disabled.
16481  *
16482  * Since: 2.12
16483  */
16484 gint
16485 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16486 {
16487   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16488
16489   return tree_view->priv->tooltip_column;
16490 }