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, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.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 "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155 typedef enum {
 156   CLEAR_AND_SELECT = (1 << 0),
 157   CLAMP_NODE       = (1 << 1),
 158   CURSOR_INVALID   = (1 << 2)
 159 } SetCursorFlags;
 160
 161  /* This lovely little value is used to determine how far away from the title bar
 162   * you can move the mouse and still have a column drag work.
 163   */
 164 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 165
 166 #ifdef __GNUC__
 167
 168 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 169      if (!(expr))                                                       \
 170        {                                                                \
 171          g_log (G_LOG_DOMAIN,                                           \
 172                 G_LOG_LEVEL_CRITICAL,                                   \
 173                 "%s (%s): assertion `%s' failed.\n"                     \
 174                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 175                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 176                 "without letting the view know.  Any display from now on is likely to\n"  \
 177                 "be incorrect.\n",                                                        \
 178                 G_STRLOC,                                               \
 179                 G_STRFUNC,                                              \
 180                 #expr);                                                 \
 181          return ret;                                                    \
 182        };                               }G_STMT_END
 183
 184 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 185      if (!(expr))                                                       \
 186        {                                                                \
 187          g_log (G_LOG_DOMAIN,                                           \
 188                 G_LOG_LEVEL_CRITICAL,                                   \
 189                 "%s (%s): assertion `%s' failed.\n"                     \
 190                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 191                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 192                 "without letting the view know.  Any display from now on is likely to\n"  \
 193                 "be incorrect.\n",                                                        \
 194                 G_STRLOC,                                               \
 195                 G_STRFUNC,                                              \
 196                 #expr);                                                 \
 197          return;                                                        \
 198        };                               }G_STMT_END
 199
 200 #else
 201
 202 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 203      if (!(expr))                                                       \
 204        {                                                                \
 205          g_log (G_LOG_DOMAIN,                                           \
 206                 G_LOG_LEVEL_CRITICAL,                                   \
 207                 "file %s: line %d: assertion `%s' failed.\n"       \
 208                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 209                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 210                 "without letting the view know.  Any display from now on is likely to\n"  \
 211                 "be incorrect.\n",                                                        \
 212                 __FILE__,                                               \
 213                 __LINE__,                                               \
 214                 #expr);                                                 \
 215          return ret;                                                    \
 216        };                               }G_STMT_END
 217
 218 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 219      if (!(expr))                                                       \
 220        {                                                                \
 221          g_log (G_LOG_DOMAIN,                                           \
 222                 G_LOG_LEVEL_CRITICAL,                                   \
 223                 "file %s: line %d: assertion '%s' failed.\n"            \
 224                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 225                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 226                 "without letting the view know.  Any display from now on is likely to\n"  \
 227                 "be incorrect.\n",                                                        \
 228                 __FILE__,                                               \
 229                 __LINE__,                                               \
 230                 #expr);                                                 \
 231          return;                                                        \
 232        };                               }G_STMT_END
 233 #endif
 234
 235 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 236 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 237 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 238 #define SCROLL_EDGE_SIZE 15
 239 #define EXPANDER_EXTRA_PADDING 4
 240 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 241 #define AUTO_EXPAND_TIMEOUT 500
 242
 243 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 244  * vice versa.
 245  */
 246 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 247 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 248
 249 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 250 struct _GtkTreeViewColumnReorder
 251 {
 252   gint left_align;
 253   gint right_align;
 254   GtkTreeViewColumn *left_column;
 255   GtkTreeViewColumn *right_column;
 256 };
 257
 258 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 259 struct _GtkTreeViewChild
 260 {
 261   GtkWidget *widget;
 262   gint x;
 263   gint y;
 264   gint width;
 265   gint height;
 266 };
 267
 268
 269 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 270 struct _TreeViewDragInfo
 271 {
 272   GdkModifierType start_button_mask;
 273   GtkTargetList *_unused_source_target_list;
 274   GdkDragAction source_actions;
 275
 276   GtkTargetList *_unused_dest_target_list;
 277
 278   guint source_set : 1;
 279   guint dest_set : 1;
 280 };
 281
 282
 283 struct _GtkTreeViewPrivate
 284 {
 285   GtkTreeModel *model;
 286
 287   /* tree information */
 288   GtkRBTree *tree;
 289
 290   /* Container info */
 291   GList *children;
 292   gint width;
 293   gint height;
 294
 295   /* Adjustments */
 296   GtkAdjustment *hadjustment;
 297   GtkAdjustment *vadjustment;
 298   gint           min_display_width;
 299   gint           min_display_height;
 300
 301   /* Sub windows */
 302   GdkWindow *bin_window;
 303   GdkWindow *header_window;
 304
 305   /* Scroll position state keeping */
 306   GtkTreeRowReference *top_row;
 307   gint top_row_dy;
 308   /* dy == y pos of top_row + top_row_dy */
 309   /* we cache it for simplicity of the code */
 310   gint dy;
 311
 312   guint presize_handler_timer;
 313   guint validate_rows_timer;
 314   guint scroll_sync_timer;
 315
 316   /* Indentation and expander layout */
 317   gint expander_size;
 318   GtkTreeViewColumn *expander_column;
 319
 320   gint level_indentation;
 321
 322   /* Key navigation (focus), selection */
 323   gint cursor_offset;
 324
 325   GtkTreeRowReference *anchor;
 326   GtkRBNode *cursor_node;
 327   GtkRBTree *cursor_tree;
 328
 329   GtkTreeViewColumn *focus_column;
 330
 331   /* Current pressed node, previously pressed, prelight */
 332   GtkRBNode *button_pressed_node;
 333   GtkRBTree *button_pressed_tree;
 334
 335   gint pressed_button;
 336   gint press_start_x;
 337   gint press_start_y;
 338
 339   gint event_last_x;
 340   gint event_last_y;
 341
 342   guint last_button_time;
 343   gint last_button_x;
 344   gint last_button_y;
 345
 346   GtkRBNode *prelight_node;
 347   GtkRBTree *prelight_tree;
 348
 349   /* Cell Editing */
 350   GtkTreeViewColumn *edited_column;
 351
 352   /* The node that's currently being collapsed or expanded */
 353   GtkRBNode *expanded_collapsed_node;
 354   GtkRBTree *expanded_collapsed_tree;
 355   guint expand_collapse_timeout;
 356
 357   /* Auto expand/collapse timeout in hover mode */
 358   guint auto_expand_timeout;
 359
 360   /* Selection information */
 361   GtkTreeSelection *selection;
 362
 363   /* Header information */
 364   gint n_columns;
 365   GList *columns;
 366   gint header_height;
 367
 368   GtkTreeViewColumnDropFunc column_drop_func;
 369   gpointer column_drop_func_data;
 370   GDestroyNotify column_drop_func_data_destroy;
 371   GList *column_drag_info;
 372   GtkTreeViewColumnReorder *cur_reorder;
 373
 374   gint prev_width_before_expander;
 375
 376   /* Interactive Header reordering */
 377   GdkWindow *drag_window;
 378   GdkWindow *drag_highlight_window;
 379   GtkTreeViewColumn *drag_column;
 380   gint drag_column_x;
 381
 382   /* Interactive Header Resizing */
 383   gint drag_pos;
 384   gint x_drag;
 385
 386   /* Non-interactive Header Resizing, expand flag support */
 387   gint prev_width;
 388
 389   gint last_extra_space;
 390   gint last_extra_space_per_column;
 391   gint last_number_of_expand_columns;
 392
 393   /* ATK Hack */
 394   GtkTreeDestroyCountFunc destroy_count_func;
 395   gpointer destroy_count_data;
 396   GDestroyNotify destroy_count_destroy;
 397
 398   /* Scroll timeout (e.g. during dnd, rubber banding) */
 399   guint scroll_timeout;
 400
 401   /* Row drag-and-drop */
 402   GtkTreeRowReference *drag_dest_row;
 403   GtkTreeViewDropPosition drag_dest_pos;
 404   guint open_dest_timeout;
 405
 406   /* Rubber banding */
 407   gint rubber_band_status;
 408   gint rubber_band_x;
 409   gint rubber_band_y;
 410   gint rubber_band_extend;
 411   gint rubber_band_modify;
 412
 413   GtkRBNode *rubber_band_start_node;
 414   GtkRBTree *rubber_band_start_tree;
 415
 416   GtkRBNode *rubber_band_end_node;
 417   GtkRBTree *rubber_band_end_tree;
 418
 419   /* fixed height */
 420   gint fixed_height;
 421
 422   /* Scroll-to functionality when unrealized */
 423   GtkTreeRowReference *scroll_to_path;
 424   GtkTreeViewColumn *scroll_to_column;
 425   gfloat scroll_to_row_align;
 426   gfloat scroll_to_col_align;
 427
 428   /* Interactive search */
 429   gint selected_iter;
 430   gint search_column;
 431   GtkTreeViewSearchPositionFunc search_position_func;
 432   GtkTreeViewSearchEqualFunc search_equal_func;
 433   gpointer search_user_data;
 434   GDestroyNotify search_destroy;
 435   gpointer search_position_user_data;
 436   GDestroyNotify search_position_destroy;
 437   GtkWidget *search_window;
 438   GtkWidget *search_entry;
 439   gulong search_entry_changed_id;
 440   guint typeselect_flush_timeout;
 441
 442   /* Grid and tree lines */
 443   GtkTreeViewGridLines grid_lines;
 444   double grid_line_dashes[2];
 445   int grid_line_width;
 446
 447   gboolean tree_lines_enabled;
 448   double tree_line_dashes[2];
 449   int tree_line_width;
 450
 451   /* Row separators */
 452   GtkTreeViewRowSeparatorFunc row_separator_func;
 453   gpointer row_separator_data;
 454   GDestroyNotify row_separator_destroy;
 455
 456   /* Tooltip support */
 457   gint tooltip_column;
 458
 459   /* Here comes the bitfield */
 460   guint scroll_to_use_align : 1;
 461
 462   guint fixed_height_mode : 1;
 463   guint fixed_height_check : 1;
 464
 465   guint reorderable : 1;
 466   guint header_has_focus : 1;
 467   guint drag_column_window_state : 3;
 468   /* hint to display rows in alternating colors */
 469   guint has_rules : 1;
 470   guint mark_rows_col_dirty : 1;
 471
 472   /* for DnD */
 473   guint empty_view_drop : 1;
 474
 475   guint modify_selection_pressed : 1;
 476   guint extend_selection_pressed : 1;
 477
 478   guint init_hadjust_value : 1;
 479
 480   guint in_top_row_to_dy : 1;
 481
 482   /* interactive search */
 483   guint enable_search : 1;
 484   guint disable_popdown : 1;
 485   guint search_custom_entry_set : 1;
 486
 487   guint hover_selection : 1;
 488   guint hover_expand : 1;
 489   guint imcontext_changed : 1;
 490
 491   guint rubber_banding_enable : 1;
 492
 493   guint in_grab : 1;
 494
 495   guint post_validation_flag : 1;
 496
 497   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 498   guint search_entry_avoid_unhandled_binding : 1;
 499
 500   /* GtkScrollablePolicy needs to be checked when
 501    * driving the scrollable adjustment values */
 502   guint hscroll_policy : 1;
 503   guint vscroll_policy : 1;
 504
 505   /* GtkTreeView flags */
 506   guint is_list : 1;
 507   guint show_expanders : 1;
 508   guint in_column_resize : 1;
 509   guint arrow_prelit : 1;
 510   guint headers_visible : 1;
 511   guint draw_keyfocus : 1;
 512   guint model_setup : 1;
 513   guint in_column_drag : 1;
 514 };
 515
 516
 517 /* Signals */
 518 enum
 519 {
 520   ROW_ACTIVATED,
 521   TEST_EXPAND_ROW,
 522   TEST_COLLAPSE_ROW,
 523   ROW_EXPANDED,
 524   ROW_COLLAPSED,
 525   COLUMNS_CHANGED,
 526   CURSOR_CHANGED,
 527   MOVE_CURSOR,
 528   SELECT_ALL,
 529   UNSELECT_ALL,
 530   SELECT_CURSOR_ROW,
 531   TOGGLE_CURSOR_ROW,
 532   EXPAND_COLLAPSE_CURSOR_ROW,
 533   SELECT_CURSOR_PARENT,
 534   START_INTERACTIVE_SEARCH,
 535   LAST_SIGNAL
 536 };
 537
 538 /* Properties */
 539 enum {
 540   PROP_0,
 541   PROP_MODEL,
 542   PROP_HADJUSTMENT,
 543   PROP_VADJUSTMENT,
 544   PROP_HSCROLL_POLICY,
 545   PROP_VSCROLL_POLICY,
 546   PROP_HEADERS_VISIBLE,
 547   PROP_HEADERS_CLICKABLE,
 548   PROP_EXPANDER_COLUMN,
 549   PROP_REORDERABLE,
 550   PROP_RULES_HINT,
 551   PROP_ENABLE_SEARCH,
 552   PROP_SEARCH_COLUMN,
 553   PROP_FIXED_HEIGHT_MODE,
 554   PROP_HOVER_SELECTION,
 555   PROP_HOVER_EXPAND,
 556   PROP_SHOW_EXPANDERS,
 557   PROP_LEVEL_INDENTATION,
 558   PROP_RUBBER_BANDING,
 559   PROP_ENABLE_GRID_LINES,
 560   PROP_ENABLE_TREE_LINES,
 561   PROP_TOOLTIP_COLUMN
 562 };
 563
 564 /* object signals */
 565 static void     gtk_tree_view_finalize             (GObject          *object);
 566 static void     gtk_tree_view_set_property         (GObject         *object,
 567                                                     guint            prop_id,
 568                                                     const GValue    *value,
 569                                                     GParamSpec      *pspec);
 570 static void     gtk_tree_view_get_property         (GObject         *object,
 571                                                     guint            prop_id,
 572                                                     GValue          *value,
 573                                                     GParamSpec      *pspec);
 574
 575 /* gtkwidget signals */
 576 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 577 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 578 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 579 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 580 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 581                                                     gint             *minimum,
 582                                                     gint             *natural);
 583 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 584                                                     gint             *minimum,
 585                                                     gint             *natural);
 586 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 587                                                     GtkRequisition   *requisition,
 588                                                     gboolean          may_validate);
 589 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 590                                                     GtkAllocation    *allocation);
 591 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 592                                                     cairo_t          *cr);
 593 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 594                                                     GdkEventKey      *event);
 595 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 596                                                     GdkEventKey      *event);
 597 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 598                                                     GdkEventMotion   *event);
 599 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 600                                                     GdkEventCrossing *event);
 601 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 602                                                     GdkEventCrossing *event);
 603 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 604                                                     GdkEventButton   *event);
 605 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 606                                                     GdkEventButton   *event);
 607 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 608                                                     GdkEventGrabBroken *event);
 609 #if 0
 610 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 611                                                     GdkEventConfigure *event);
 612 #endif
 613
 614 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 615                                                          GtkWidget    *child);
 616
 617 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 618                                                     GtkWidget        *child);
 619 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 620                                                     GdkEventFocus    *event);
 621 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 622                                                     GtkDirectionType  direction);
 623 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 624 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 625 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 626                                                     gboolean          was_grabbed);
 627 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 628                                                     GtkStateFlags     previous_state);
 629
 630 /* container signals */
 631 static void     gtk_tree_view_remove               (GtkContainer     *container,
 632                                                     GtkWidget        *widget);
 633 static void     gtk_tree_view_forall               (GtkContainer     *container,
 634                                                     gboolean          include_internals,
 635                                                     GtkCallback       callback,
 636                                                     gpointer          callback_data);
 637
 638 /* Source side drag signals */
 639 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 640                                             GdkDragContext   *context);
 641 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 644                                             GdkDragContext   *context,
 645                                             GtkSelectionData *selection_data,
 646                                             guint             info,
 647                                             guint             time);
 648 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 649                                             GdkDragContext   *context);
 650
 651 /* Target side drag signals */
 652 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 653                                                   GdkDragContext   *context,
 654                                                   guint             time);
 655 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 656                                                   GdkDragContext   *context,
 657                                                   gint              x,
 658                                                   gint              y,
 659                                                   guint             time);
 660 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 661                                                   GdkDragContext   *context,
 662                                                   gint              x,
 663                                                   gint              y,
 664                                                   guint             time);
 665 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 666                                                   GdkDragContext   *context,
 667                                                   gint              x,
 668                                                   gint              y,
 669                                                   GtkSelectionData *selection_data,
 670                                                   guint             info,
 671                                                   guint             time);
 672
 673 /* tree_model signals */
 674 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 675                                                            GtkMovementStep  step,
 676                                                            gint             count);
 677 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 678 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 680                                                            gboolean         start_editing);
 681 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 682 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 683                                                                gboolean         logical,
 684                                                                gboolean         expand,
 685                                                                gboolean         open_all);
 686 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 687 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 688                                                            GtkTreePath     *path,
 689                                                            GtkTreeIter     *iter,
 690                                                            gpointer         data);
 691 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 692                                                            GtkTreePath     *path,
 693                                                            GtkTreeIter     *iter,
 694                                                            gpointer         data);
 695 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 696                                                            GtkTreePath     *path,
 697                                                            GtkTreeIter     *iter,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 700                                                            GtkTreePath     *path,
 701                                                            gpointer         data);
 702 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 703                                                            GtkTreePath     *parent,
 704                                                            GtkTreeIter     *iter,
 705                                                            gint            *new_order,
 706                                                            gpointer         data);
 707
 708 /* Incremental reflow */
 709 static gboolean validate_row             (GtkTreeView *tree_view,
 710                                           GtkRBTree   *tree,
 711                                           GtkRBNode   *node,
 712                                           GtkTreeIter *iter,
 713                                           GtkTreePath *path);
 714 static void     validate_visible_area    (GtkTreeView *tree_view);
 715 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 716 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 717                                           gboolean     size_request);
 718 static gboolean validate_rows            (GtkTreeView *tree_view);
 719 static gboolean presize_handler_callback (gpointer     data);
 720 static void     install_presize_handler  (GtkTreeView *tree_view);
 721 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 722 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 723                                              GtkTreePath *path,
 724                                              gint         offset);
 725 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 726 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 727 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 728
 729 /* Internal functions */
 730 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 731                                                               GtkTreeViewColumn  *column);
 732 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 733 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 734                                                               guint               keyval,
 735                                                               guint               modmask,
 736                                                               gboolean            add_shifted_binding,
 737                                                               GtkMovementStep     step,
 738                                                               gint                count);
 739 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 740                                                               GtkRBTree          *tree);
 741 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 742                                                               GtkTreePath        *path,
 743                                                               const GdkRectangle *clip_rect);
 744 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 745                                                               GtkRBTree          *tree,
 746                                                               GtkRBNode          *node);
 747 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 748                                                               cairo_t            *cr,
 749                                                               GtkRBTree          *tree,
 750                                                               GtkRBNode          *node);
 751 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 752                                                               GtkRBTree          *tree,
 753                                                               gint               *x1,
 754                                                               gint               *x2);
 755 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 756                                                               gint                i,
 757                                                               gint               *x);
 758 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 759                                                               GtkTreeView        *tree_view);
 760 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 761                                                               GtkRBTree          *tree,
 762                                                               GtkTreeIter        *iter,
 763                                                               gint                depth,
 764                                                               gboolean            recurse);
 765 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 766                                                               GtkRBTree          *tree,
 767                                                               GtkRBNode          *node);
 768 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 769                                                               GtkTreeViewColumn  *column,
 770                                                               gboolean            focus_to_cell);
 771 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 772                                                               GdkEventMotion     *event);
 773 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 774 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 775                                                               gint                count);
 776 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 777                                                               gint                count);
 778 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 779                                                               gint                count);
 780 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 781                                                               gint                count);
 782 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 783                                                               GtkTreePath        *path,
 784                                                               GtkRBTree          *tree,
 785                                                               GtkRBNode          *node,
 786                                                               gboolean            animate);
 787 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 788                                                               GtkTreePath        *path,
 789                                                               GtkRBTree          *tree,
 790                                                               GtkRBNode          *node,
 791                                                               gboolean            open_all,
 792                                                               gboolean            animate);
 793 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 794                                                               GtkTreePath        *path,
 795                                                               SetCursorFlags      flags);
 796 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 797 static void     column_sizing_notify                         (GObject            *object,
 798                                                               GParamSpec         *pspec,
 799                                                               gpointer            data);
 800 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 801 static void     update_prelight                              (GtkTreeView        *tree_view,
 802                                                               int                 x,
 803                                                               int                 y);
 804
 805 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 806
 807 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 808                                                               GtkRBTree   *tree,
 809                                                               GtkRBNode   *node,
 810                                                               gint         vertical_separator);
 811 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 812                                                               GtkRBNode   *node,
 813                                                               gint         vertical_separator);
 814
 815 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 816                                                               GtkRBTree   *tree,
 817                                                               GtkRBNode   *node);
 818 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 819                                                               GtkRBNode   *node);
 820
 821 /* interactive search */
 822 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 823 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 824                                                          GtkTreeView      *tree_view,
 825                                                          GdkDevice        *device);
 826 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 827                                                          GtkWidget        *search_dialog,
 828                                                          gpointer          user_data);
 829 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 830                                                          GtkMenu          *menu,
 831                                                          gpointer          data);
 832 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 833                                                          GtkTreeView      *tree_view);
 834 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 837 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 838                                                          gpointer          data);
 839 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 840                                                          GdkEventAny      *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 843                                                          GdkEventButton   *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 846                                                          GdkEventScroll   *event,
 847                                                          GtkTreeView      *tree_view);
 848 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 849                                                          GdkEventKey      *event,
 850                                                          GtkTreeView      *tree_view);
 851 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 852                                                          GtkTreeView      *tree_view,
 853                                                          gboolean          up);
 854 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 855                                                          gint              column,
 856                                                          const gchar      *key,
 857                                                          GtkTreeIter      *iter,
 858                                                          gpointer          search_data);
 859 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 860                                                          GtkTreeSelection *selection,
 861                                                          GtkTreeIter      *iter,
 862                                                          const gchar      *text,
 863                                                          gint             *count,
 864                                                          gint              n);
 865 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 866                                                          GtkTreeView      *tree_view);
 867 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 868                                                          GtkWidget        *child_widget,
 869                                                          gint              x,
 870                                                          gint              y,
 871                                                          gint              width,
 872                                                          gint              height);
 873 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 874                                                          GtkTreePath      *cursor_path,
 875                                                          gboolean          edit_only);
 876 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 877                                                          gboolean     cancel_editing);
 878 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 879                                                              GdkDevice   *device,
 880                                                              gboolean     keybinding);
 881 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 882 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 883                                                          GtkTreeViewColumn *column,
 884                                                          gint               drop_position);
 885
 886 /* GtkBuildable */
 887 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 888                                                             GtkBuilder        *builder,
 889                                                             GObject           *child,
 890                                                             const gchar       *type);
 891 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 892                                                             GtkBuilder        *builder,
 893                                                             const gchar       *childname);
 894 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 895
 896 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 897 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 898                                                         GtkAdjustment *adjustment);
 899 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 900 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 901                                                         GtkAdjustment *adjustment);
 902
 903 static gboolean scroll_row_timeout                   (gpointer     data);
 904 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 905 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 906
 907 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 908
 909 \f
 910
 911 /* GType Methods
 912  */
 913
 914 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 915                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 916                                                 gtk_tree_view_buildable_init)
 917                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 918
 919 static void
 920 gtk_tree_view_class_init (GtkTreeViewClass *class)
 921 {
 922   GObjectClass *o_class;
 923   GtkWidgetClass *widget_class;
 924   GtkContainerClass *container_class;
 925   GtkBindingSet *binding_set;
 926
 927   binding_set = gtk_binding_set_by_class (class);
 928
 929   o_class = (GObjectClass *) class;
 930   widget_class = (GtkWidgetClass *) class;
 931   container_class = (GtkContainerClass *) class;
 932
 933   /* GObject signals */
 934   o_class->set_property = gtk_tree_view_set_property;
 935   o_class->get_property = gtk_tree_view_get_property;
 936   o_class->finalize = gtk_tree_view_finalize;
 937
 938   /* GtkWidget signals */
 939   widget_class->destroy = gtk_tree_view_destroy;
 940   widget_class->map = gtk_tree_view_map;
 941   widget_class->realize = gtk_tree_view_realize;
 942   widget_class->unrealize = gtk_tree_view_unrealize;
 943   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 944   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 945   widget_class->size_allocate = gtk_tree_view_size_allocate;
 946   widget_class->button_press_event = gtk_tree_view_button_press;
 947   widget_class->button_release_event = gtk_tree_view_button_release;
 948   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 949   /*widget_class->configure_event = gtk_tree_view_configure;*/
 950   widget_class->motion_notify_event = gtk_tree_view_motion;
 951   widget_class->draw = gtk_tree_view_draw;
 952   widget_class->key_press_event = gtk_tree_view_key_press;
 953   widget_class->key_release_event = gtk_tree_view_key_release;
 954   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 955   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 956   widget_class->focus_out_event = gtk_tree_view_focus_out;
 957   widget_class->drag_begin = gtk_tree_view_drag_begin;
 958   widget_class->drag_end = gtk_tree_view_drag_end;
 959   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 960   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 961   widget_class->drag_leave = gtk_tree_view_drag_leave;
 962   widget_class->drag_motion = gtk_tree_view_drag_motion;
 963   widget_class->drag_drop = gtk_tree_view_drag_drop;
 964   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 965   widget_class->focus = gtk_tree_view_focus;
 966   widget_class->grab_focus = gtk_tree_view_grab_focus;
 967   widget_class->style_updated = gtk_tree_view_style_updated;
 968   widget_class->grab_notify = gtk_tree_view_grab_notify;
 969   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 970
 971   /* GtkContainer signals */
 972   container_class->remove = gtk_tree_view_remove;
 973   container_class->forall = gtk_tree_view_forall;
 974   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 975   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 976
 977   class->move_cursor = gtk_tree_view_real_move_cursor;
 978   class->select_all = gtk_tree_view_real_select_all;
 979   class->unselect_all = gtk_tree_view_real_unselect_all;
 980   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 981   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 982   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 983   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 984   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 985
 986   /* Properties */
 987
 988   g_object_class_install_property (o_class,
 989                                    PROP_MODEL,
 990                                    g_param_spec_object ("model",
 991                                                         P_("TreeView Model"),
 992                                                         P_("The model for the tree view"),
 993                                                         GTK_TYPE_TREE_MODEL,
 994                                                         GTK_PARAM_READWRITE));
 995
 996   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 997   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 998   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 999   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
1000
1001   g_object_class_install_property (o_class,
1002                                    PROP_HEADERS_VISIBLE,
1003                                    g_param_spec_boolean ("headers-visible",
1004                                                          P_("Headers Visible"),
1005                                                          P_("Show the column header buttons"),
1006                                                          TRUE,
1007                                                          GTK_PARAM_READWRITE));
1008
1009   g_object_class_install_property (o_class,
1010                                    PROP_HEADERS_CLICKABLE,
1011                                    g_param_spec_boolean ("headers-clickable",
1012                                                          P_("Headers Clickable"),
1013                                                          P_("Column headers respond to click events"),
1014                                                          TRUE,
1015                                                          GTK_PARAM_READWRITE));
1016
1017   g_object_class_install_property (o_class,
1018                                    PROP_EXPANDER_COLUMN,
1019                                    g_param_spec_object ("expander-column",
1020                                                         P_("Expander Column"),
1021                                                         P_("Set the column for the expander column"),
1022                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1023                                                         GTK_PARAM_READWRITE));
1024
1025   g_object_class_install_property (o_class,
1026                                    PROP_REORDERABLE,
1027                                    g_param_spec_boolean ("reorderable",
1028                                                          P_("Reorderable"),
1029                                                          P_("View is reorderable"),
1030                                                          FALSE,
1031                                                          GTK_PARAM_READWRITE));
1032
1033   g_object_class_install_property (o_class,
1034                                    PROP_RULES_HINT,
1035                                    g_param_spec_boolean ("rules-hint",
1036                                                          P_("Rules Hint"),
1037                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1038                                                          FALSE,
1039                                                          GTK_PARAM_READWRITE));
1040
1041     g_object_class_install_property (o_class,
1042                                      PROP_ENABLE_SEARCH,
1043                                      g_param_spec_boolean ("enable-search",
1044                                                            P_("Enable Search"),
1045                                                            P_("View allows user to search through columns interactively"),
1046                                                            TRUE,
1047                                                            GTK_PARAM_READWRITE));
1048
1049     g_object_class_install_property (o_class,
1050                                      PROP_SEARCH_COLUMN,
1051                                      g_param_spec_int ("search-column",
1052                                                        P_("Search Column"),
1053                                                        P_("Model column to search through during interactive search"),
1054                                                        -1,
1055                                                        G_MAXINT,
1056                                                        -1,
1057                                                        GTK_PARAM_READWRITE));
1058
1059     /**
1060      * GtkTreeView:fixed-height-mode:
1061      *
1062      * Setting the ::fixed-height-mode property to %TRUE speeds up
1063      * #GtkTreeView by assuming that all rows have the same height.
1064      * Only enable this option if all rows are the same height.
1065      * Please see gtk_tree_view_set_fixed_height_mode() for more
1066      * information on this option.
1067      *
1068      * Since: 2.4
1069      **/
1070     g_object_class_install_property (o_class,
1071                                      PROP_FIXED_HEIGHT_MODE,
1072                                      g_param_spec_boolean ("fixed-height-mode",
1073                                                            P_("Fixed Height Mode"),
1074                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1075                                                            FALSE,
1076                                                            GTK_PARAM_READWRITE));
1077
1078     /**
1079      * GtkTreeView:hover-selection:
1080      *
1081      * Enables or disables the hover selection mode of @tree_view.
1082      * Hover selection makes the selected row follow the pointer.
1083      * Currently, this works only for the selection modes
1084      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1085      *
1086      * This mode is primarily intended for treeviews in popups, e.g.
1087      * in #GtkComboBox or #GtkEntryCompletion.
1088      *
1089      * Since: 2.6
1090      */
1091     g_object_class_install_property (o_class,
1092                                      PROP_HOVER_SELECTION,
1093                                      g_param_spec_boolean ("hover-selection",
1094                                                            P_("Hover Selection"),
1095                                                            P_("Whether the selection should follow the pointer"),
1096                                                            FALSE,
1097                                                            GTK_PARAM_READWRITE));
1098
1099     /**
1100      * GtkTreeView:hover-expand:
1101      *
1102      * Enables or disables the hover expansion mode of @tree_view.
1103      * Hover expansion makes rows expand or collapse if the pointer moves
1104      * over them.
1105      *
1106      * This mode is primarily intended for treeviews in popups, e.g.
1107      * in #GtkComboBox or #GtkEntryCompletion.
1108      *
1109      * Since: 2.6
1110      */
1111     g_object_class_install_property (o_class,
1112                                      PROP_HOVER_EXPAND,
1113                                      g_param_spec_boolean ("hover-expand",
1114                                                            P_("Hover Expand"),
1115                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1116                                                            FALSE,
1117                                                            GTK_PARAM_READWRITE));
1118
1119     /**
1120      * GtkTreeView:show-expanders:
1121      *
1122      * %TRUE if the view has expanders.
1123      *
1124      * Since: 2.12
1125      */
1126     g_object_class_install_property (o_class,
1127                                      PROP_SHOW_EXPANDERS,
1128                                      g_param_spec_boolean ("show-expanders",
1129                                                            P_("Show Expanders"),
1130                                                            P_("View has expanders"),
1131                                                            TRUE,
1132                                                            GTK_PARAM_READWRITE));
1133
1134     /**
1135      * GtkTreeView:level-indentation:
1136      *
1137      * Extra indentation for each level.
1138      *
1139      * Since: 2.12
1140      */
1141     g_object_class_install_property (o_class,
1142                                      PROP_LEVEL_INDENTATION,
1143                                      g_param_spec_int ("level-indentation",
1144                                                        P_("Level Indentation"),
1145                                                        P_("Extra indentation for each level"),
1146                                                        0,
1147                                                        G_MAXINT,
1148                                                        0,
1149                                                        GTK_PARAM_READWRITE));
1150
1151     g_object_class_install_property (o_class,
1152                                      PROP_RUBBER_BANDING,
1153                                      g_param_spec_boolean ("rubber-banding",
1154                                                            P_("Rubber Banding"),
1155                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1156                                                            FALSE,
1157                                                            GTK_PARAM_READWRITE));
1158
1159     g_object_class_install_property (o_class,
1160                                      PROP_ENABLE_GRID_LINES,
1161                                      g_param_spec_enum ("enable-grid-lines",
1162                                                         P_("Enable Grid Lines"),
1163                                                         P_("Whether grid lines should be drawn in the tree view"),
1164                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1165                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1166                                                         GTK_PARAM_READWRITE));
1167
1168     g_object_class_install_property (o_class,
1169                                      PROP_ENABLE_TREE_LINES,
1170                                      g_param_spec_boolean ("enable-tree-lines",
1171                                                            P_("Enable Tree Lines"),
1172                                                            P_("Whether tree lines should be drawn in the tree view"),
1173                                                            FALSE,
1174                                                            GTK_PARAM_READWRITE));
1175
1176     g_object_class_install_property (o_class,
1177                                      PROP_TOOLTIP_COLUMN,
1178                                      g_param_spec_int ("tooltip-column",
1179                                                        P_("Tooltip Column"),
1180                                                        P_("The column in the model containing the tooltip texts for the rows"),
1181                                                        -1,
1182                                                        G_MAXINT,
1183                                                        -1,
1184                                                        GTK_PARAM_READWRITE));
1185
1186   /* Style properties */
1187 #define _TREE_VIEW_EXPANDER_SIZE 14
1188 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1189 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1190
1191   gtk_widget_class_install_style_property (widget_class,
1192                                            g_param_spec_int ("expander-size",
1193                                                              P_("Expander Size"),
1194                                                              P_("Size of the expander arrow"),
1195                                                              0,
1196                                                              G_MAXINT,
1197                                                              _TREE_VIEW_EXPANDER_SIZE,
1198                                                              GTK_PARAM_READABLE));
1199
1200   gtk_widget_class_install_style_property (widget_class,
1201                                            g_param_spec_int ("vertical-separator",
1202                                                              P_("Vertical Separator Width"),
1203                                                              P_("Vertical space between cells.  Must be an even number"),
1204                                                              0,
1205                                                              G_MAXINT,
1206                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1207                                                              GTK_PARAM_READABLE));
1208
1209   gtk_widget_class_install_style_property (widget_class,
1210                                            g_param_spec_int ("horizontal-separator",
1211                                                              P_("Horizontal Separator Width"),
1212                                                              P_("Horizontal space between cells.  Must be an even number"),
1213                                                              0,
1214                                                              G_MAXINT,
1215                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1216                                                              GTK_PARAM_READABLE));
1217
1218   gtk_widget_class_install_style_property (widget_class,
1219                                            g_param_spec_boolean ("allow-rules",
1220                                                                  P_("Allow Rules"),
1221                                                                  P_("Allow drawing of alternating color rows"),
1222                                                                  TRUE,
1223                                                                  GTK_PARAM_READABLE));
1224
1225   gtk_widget_class_install_style_property (widget_class,
1226                                            g_param_spec_boolean ("indent-expanders",
1227                                                                  P_("Indent Expanders"),
1228                                                                  P_("Make the expanders indented"),
1229                                                                  TRUE,
1230                                                                  GTK_PARAM_READABLE));
1231
1232   gtk_widget_class_install_style_property (widget_class,
1233                                            g_param_spec_boxed ("even-row-color",
1234                                                                P_("Even Row Color"),
1235                                                                P_("Color to use for even rows"),
1236                                                                GDK_TYPE_COLOR,
1237                                                                GTK_PARAM_READABLE));
1238
1239   gtk_widget_class_install_style_property (widget_class,
1240                                            g_param_spec_boxed ("odd-row-color",
1241                                                                P_("Odd Row Color"),
1242                                                                P_("Color to use for odd rows"),
1243                                                                GDK_TYPE_COLOR,
1244                                                                GTK_PARAM_READABLE));
1245
1246   gtk_widget_class_install_style_property (widget_class,
1247                                            g_param_spec_int ("grid-line-width",
1248                                                              P_("Grid line width"),
1249                                                              P_("Width, in pixels, of the tree view grid lines"),
1250                                                              0, G_MAXINT, 1,
1251                                                              GTK_PARAM_READABLE));
1252
1253   gtk_widget_class_install_style_property (widget_class,
1254                                            g_param_spec_int ("tree-line-width",
1255                                                              P_("Tree line width"),
1256                                                              P_("Width, in pixels, of the tree view lines"),
1257                                                              0, G_MAXINT, 1,
1258                                                              GTK_PARAM_READABLE));
1259
1260   gtk_widget_class_install_style_property (widget_class,
1261                                            g_param_spec_string ("grid-line-pattern",
1262                                                                 P_("Grid line pattern"),
1263                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1264                                                                 "\1\1",
1265                                                                 GTK_PARAM_READABLE));
1266
1267   gtk_widget_class_install_style_property (widget_class,
1268                                            g_param_spec_string ("tree-line-pattern",
1269                                                                 P_("Tree line pattern"),
1270                                                                 P_("Dash pattern used to draw the tree view lines"),
1271                                                                 "\1\1",
1272                                                                 GTK_PARAM_READABLE));
1273
1274   /* Signals */
1275   /**
1276    * GtkTreeView::row-activated:
1277    * @tree_view: the object on which the signal is emitted
1278    * @path: the #GtkTreePath for the activated row
1279    * @column: the #GtkTreeViewColumn in which the activation occurred
1280    *
1281    * The "row-activated" signal is emitted when the method
1282    * gtk_tree_view_row_activated() is called or the user double clicks
1283    * a treeview row. It is also emitted when a non-editable row is
1284    * selected and one of the keys: Space, Shift+Space, Return or
1285    * Enter is pressed.
1286    *
1287    * For selection handling refer to the <link linkend="TreeWidget">tree
1288    * widget conceptual overview</link> as well as #GtkTreeSelection.
1289    */
1290   tree_view_signals[ROW_ACTIVATED] =
1291     g_signal_new (I_("row-activated"),
1292                   G_TYPE_FROM_CLASS (o_class),
1293                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1294                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1295                   NULL, NULL,
1296                   _gtk_marshal_VOID__BOXED_OBJECT,
1297                   G_TYPE_NONE, 2,
1298                   GTK_TYPE_TREE_PATH,
1299                   GTK_TYPE_TREE_VIEW_COLUMN);
1300
1301   /**
1302    * GtkTreeView::test-expand-row:
1303    * @tree_view: the object on which the signal is emitted
1304    * @iter: the tree iter of the row to expand
1305    * @path: a tree path that points to the row
1306    *
1307    * The given row is about to be expanded (show its children nodes). Use this
1308    * signal if you need to control the expandability of individual rows.
1309    *
1310    * Returns: %FALSE to allow expansion, %TRUE to reject
1311    */
1312   tree_view_signals[TEST_EXPAND_ROW] =
1313     g_signal_new (I_("test-expand-row"),
1314                   G_TYPE_FROM_CLASS (o_class),
1315                   G_SIGNAL_RUN_LAST,
1316                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1317                   _gtk_boolean_handled_accumulator, NULL,
1318                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1319                   G_TYPE_BOOLEAN, 2,
1320                   GTK_TYPE_TREE_ITER,
1321                   GTK_TYPE_TREE_PATH);
1322
1323   /**
1324    * GtkTreeView::test-collapse-row:
1325    * @tree_view: the object on which the signal is emitted
1326    * @iter: the tree iter of the row to collapse
1327    * @path: a tree path that points to the row
1328    *
1329    * The given row is about to be collapsed (hide its children nodes). Use this
1330    * signal if you need to control the collapsibility of individual rows.
1331    *
1332    * Returns: %FALSE to allow collapsing, %TRUE to reject
1333    */
1334   tree_view_signals[TEST_COLLAPSE_ROW] =
1335     g_signal_new (I_("test-collapse-row"),
1336                   G_TYPE_FROM_CLASS (o_class),
1337                   G_SIGNAL_RUN_LAST,
1338                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1339                   _gtk_boolean_handled_accumulator, NULL,
1340                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1341                   G_TYPE_BOOLEAN, 2,
1342                   GTK_TYPE_TREE_ITER,
1343                   GTK_TYPE_TREE_PATH);
1344
1345   /**
1346    * GtkTreeView::row-expanded:
1347    * @tree_view: the object on which the signal is emitted
1348    * @iter: the tree iter of the expanded row
1349    * @path: a tree path that points to the row
1350    *
1351    * The given row has been expanded (child nodes are shown).
1352    */
1353   tree_view_signals[ROW_EXPANDED] =
1354     g_signal_new (I_("row-expanded"),
1355                   G_TYPE_FROM_CLASS (o_class),
1356                   G_SIGNAL_RUN_LAST,
1357                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1358                   NULL, NULL,
1359                   _gtk_marshal_VOID__BOXED_BOXED,
1360                   G_TYPE_NONE, 2,
1361                   GTK_TYPE_TREE_ITER,
1362                   GTK_TYPE_TREE_PATH);
1363
1364   /**
1365    * GtkTreeView::row-collapsed:
1366    * @tree_view: the object on which the signal is emitted
1367    * @iter: the tree iter of the collapsed row
1368    * @path: a tree path that points to the row
1369    *
1370    * The given row has been collapsed (child nodes are hidden).
1371    */
1372   tree_view_signals[ROW_COLLAPSED] =
1373     g_signal_new (I_("row-collapsed"),
1374                   G_TYPE_FROM_CLASS (o_class),
1375                   G_SIGNAL_RUN_LAST,
1376                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1377                   NULL, NULL,
1378                   _gtk_marshal_VOID__BOXED_BOXED,
1379                   G_TYPE_NONE, 2,
1380                   GTK_TYPE_TREE_ITER,
1381                   GTK_TYPE_TREE_PATH);
1382
1383   /**
1384    * GtkTreeView::columns-changed:
1385    * @tree_view: the object on which the signal is emitted
1386    *
1387    * The number of columns of the treeview has changed.
1388    */
1389   tree_view_signals[COLUMNS_CHANGED] =
1390     g_signal_new (I_("columns-changed"),
1391                   G_TYPE_FROM_CLASS (o_class),
1392                   G_SIGNAL_RUN_LAST,
1393                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1394                   NULL, NULL,
1395                   _gtk_marshal_VOID__VOID,
1396                   G_TYPE_NONE, 0);
1397
1398   /**
1399    * GtkTreeView::cursor-changed:
1400    * @tree_view: the object on which the signal is emitted
1401    *
1402    * The position of the cursor (focused cell) has changed.
1403    */
1404   tree_view_signals[CURSOR_CHANGED] =
1405     g_signal_new (I_("cursor-changed"),
1406                   G_TYPE_FROM_CLASS (o_class),
1407                   G_SIGNAL_RUN_LAST,
1408                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1409                   NULL, NULL,
1410                   _gtk_marshal_VOID__VOID,
1411                   G_TYPE_NONE, 0);
1412
1413   tree_view_signals[MOVE_CURSOR] =
1414     g_signal_new (I_("move-cursor"),
1415                   G_TYPE_FROM_CLASS (o_class),
1416                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1417                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1418                   NULL, NULL,
1419                   _gtk_marshal_BOOLEAN__ENUM_INT,
1420                   G_TYPE_BOOLEAN, 2,
1421                   GTK_TYPE_MOVEMENT_STEP,
1422                   G_TYPE_INT);
1423
1424   tree_view_signals[SELECT_ALL] =
1425     g_signal_new (I_("select-all"),
1426                   G_TYPE_FROM_CLASS (o_class),
1427                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1428                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1429                   NULL, NULL,
1430                   _gtk_marshal_BOOLEAN__VOID,
1431                   G_TYPE_BOOLEAN, 0);
1432
1433   tree_view_signals[UNSELECT_ALL] =
1434     g_signal_new (I_("unselect-all"),
1435                   G_TYPE_FROM_CLASS (o_class),
1436                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1437                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1438                   NULL, NULL,
1439                   _gtk_marshal_BOOLEAN__VOID,
1440                   G_TYPE_BOOLEAN, 0);
1441
1442   tree_view_signals[SELECT_CURSOR_ROW] =
1443     g_signal_new (I_("select-cursor-row"),
1444                   G_TYPE_FROM_CLASS (o_class),
1445                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1446                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1447                   NULL, NULL,
1448                   _gtk_marshal_BOOLEAN__BOOLEAN,
1449                   G_TYPE_BOOLEAN, 1,
1450                   G_TYPE_BOOLEAN);
1451
1452   tree_view_signals[TOGGLE_CURSOR_ROW] =
1453     g_signal_new (I_("toggle-cursor-row"),
1454                   G_TYPE_FROM_CLASS (o_class),
1455                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1456                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1457                   NULL, NULL,
1458                   _gtk_marshal_BOOLEAN__VOID,
1459                   G_TYPE_BOOLEAN, 0);
1460
1461   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1462     g_signal_new (I_("expand-collapse-cursor-row"),
1463                   G_TYPE_FROM_CLASS (o_class),
1464                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1465                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1466                   NULL, NULL,
1467                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1468                   G_TYPE_BOOLEAN, 3,
1469                   G_TYPE_BOOLEAN,
1470                   G_TYPE_BOOLEAN,
1471                   G_TYPE_BOOLEAN);
1472
1473   tree_view_signals[SELECT_CURSOR_PARENT] =
1474     g_signal_new (I_("select-cursor-parent"),
1475                   G_TYPE_FROM_CLASS (o_class),
1476                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1477                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1478                   NULL, NULL,
1479                   _gtk_marshal_BOOLEAN__VOID,
1480                   G_TYPE_BOOLEAN, 0);
1481
1482   tree_view_signals[START_INTERACTIVE_SEARCH] =
1483     g_signal_new (I_("start-interactive-search"),
1484                   G_TYPE_FROM_CLASS (o_class),
1485                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1486                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1487                   NULL, NULL,
1488                   _gtk_marshal_BOOLEAN__VOID,
1489                   G_TYPE_BOOLEAN, 0);
1490
1491   /* Key bindings */
1492   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1493                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1494   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1495                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1496
1497   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1498                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1503                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1504
1505   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1506                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1507
1508   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1509                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1510   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1511                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1512
1513   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1514                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1515   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1516                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1517
1518   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1519                                   GTK_MOVEMENT_PAGES, -1);
1520   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1521                                   GTK_MOVEMENT_PAGES, -1);
1522
1523   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1524                                   GTK_MOVEMENT_PAGES, 1);
1525   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1526                                   GTK_MOVEMENT_PAGES, 1);
1527
1528
1529   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1530                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1531                                 G_TYPE_INT, 1);
1532
1533   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1534                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1535                                 G_TYPE_INT, -1);
1536
1537   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1538                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1539                                 G_TYPE_INT, 1);
1540
1541   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1542                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1543                                 G_TYPE_INT, -1);
1544
1545   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1546                                 "move-cursor", 2,
1547                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1548                                 G_TYPE_INT, 1);
1549
1550   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1551                                 "move-cursor", 2,
1552                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1553                                 G_TYPE_INT, -1);
1554
1555   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1556                                 "move-cursor", 2,
1557                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1558                                 G_TYPE_INT, 1);
1559
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1561                                 "move-cursor", 2,
1562                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1563                                 G_TYPE_INT, -1);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1569   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1570
1571   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1572   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1573
1574   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1575                                 G_TYPE_BOOLEAN, TRUE);
1576   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1577                                 G_TYPE_BOOLEAN, TRUE);
1578
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1584                                 G_TYPE_BOOLEAN, TRUE);
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1586                                 G_TYPE_BOOLEAN, TRUE);
1587   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1588                                 G_TYPE_BOOLEAN, TRUE);
1589
1590   /* expand and collapse rows */
1591   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, FALSE);
1595
1596   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1597                                 "expand-collapse-cursor-row", 3,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE,
1600                                 G_TYPE_BOOLEAN, TRUE);
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, TRUE,
1605                                 G_TYPE_BOOLEAN, TRUE);
1606
1607   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1608                                 "expand-collapse-cursor-row", 3,
1609                                 G_TYPE_BOOLEAN, TRUE,
1610                                 G_TYPE_BOOLEAN, FALSE,
1611                                 G_TYPE_BOOLEAN, FALSE);
1612   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1613                                 "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, FALSE,
1616                                 G_TYPE_BOOLEAN, FALSE);
1617
1618   /* Not doable on US keyboards */
1619   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1620                                 G_TYPE_BOOLEAN, TRUE,
1621                                 G_TYPE_BOOLEAN, TRUE,
1622                                 G_TYPE_BOOLEAN, TRUE);
1623   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1624                                 G_TYPE_BOOLEAN, TRUE,
1625                                 G_TYPE_BOOLEAN, TRUE,
1626                                 G_TYPE_BOOLEAN, FALSE);
1627   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1628                                 G_TYPE_BOOLEAN, TRUE,
1629                                 G_TYPE_BOOLEAN, TRUE,
1630                                 G_TYPE_BOOLEAN, TRUE);
1631   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE,
1634                                 G_TYPE_BOOLEAN, TRUE);
1635   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1636                                 "expand-collapse-cursor-row", 3,
1637                                 G_TYPE_BOOLEAN, FALSE,
1638                                 G_TYPE_BOOLEAN, TRUE,
1639                                 G_TYPE_BOOLEAN, TRUE);
1640   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1652                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1653                                 "expand-collapse-cursor-row", 3,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, TRUE,
1656                                 G_TYPE_BOOLEAN, TRUE);
1657
1658   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1659                                 G_TYPE_BOOLEAN, TRUE,
1660                                 G_TYPE_BOOLEAN, FALSE,
1661                                 G_TYPE_BOOLEAN, FALSE);
1662   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1663                                 G_TYPE_BOOLEAN, TRUE,
1664                                 G_TYPE_BOOLEAN, FALSE,
1665                                 G_TYPE_BOOLEAN, TRUE);
1666   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1667                                 G_TYPE_BOOLEAN, TRUE,
1668                                 G_TYPE_BOOLEAN, FALSE,
1669                                 G_TYPE_BOOLEAN, FALSE);
1670   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1671                                 G_TYPE_BOOLEAN, TRUE,
1672                                 G_TYPE_BOOLEAN, FALSE,
1673                                 G_TYPE_BOOLEAN, TRUE);
1674   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1675                                 "expand-collapse-cursor-row", 3,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, FALSE,
1678                                 G_TYPE_BOOLEAN, TRUE);
1679   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1691                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1692                                 "expand-collapse-cursor-row", 3,
1693                                 G_TYPE_BOOLEAN, FALSE,
1694                                 G_TYPE_BOOLEAN, FALSE,
1695                                 G_TYPE_BOOLEAN, TRUE);
1696
1697   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1698   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1699
1700   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1701
1702   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1703
1704   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1705
1706   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1707 }
1708
1709 static void
1710 gtk_tree_view_init (GtkTreeView *tree_view)
1711 {
1712   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1713
1714   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1715   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1716
1717   tree_view->priv->show_expanders = TRUE;
1718   tree_view->priv->draw_keyfocus = TRUE;
1719   tree_view->priv->headers_visible = TRUE;
1720
1721   /* We need some padding */
1722   tree_view->priv->dy = 0;
1723   tree_view->priv->cursor_offset = 0;
1724   tree_view->priv->n_columns = 0;
1725   tree_view->priv->header_height = 1;
1726   tree_view->priv->x_drag = 0;
1727   tree_view->priv->drag_pos = -1;
1728   tree_view->priv->header_has_focus = FALSE;
1729   tree_view->priv->pressed_button = -1;
1730   tree_view->priv->press_start_x = -1;
1731   tree_view->priv->press_start_y = -1;
1732   tree_view->priv->reorderable = FALSE;
1733   tree_view->priv->presize_handler_timer = 0;
1734   tree_view->priv->scroll_sync_timer = 0;
1735   tree_view->priv->fixed_height = -1;
1736   tree_view->priv->fixed_height_mode = FALSE;
1737   tree_view->priv->fixed_height_check = 0;
1738   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1739   tree_view->priv->enable_search = TRUE;
1740   tree_view->priv->search_column = -1;
1741   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1742   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1743   tree_view->priv->search_custom_entry_set = FALSE;
1744   tree_view->priv->typeselect_flush_timeout = 0;
1745   tree_view->priv->init_hadjust_value = TRUE;
1746   tree_view->priv->width = 0;
1747
1748   tree_view->priv->hover_selection = FALSE;
1749   tree_view->priv->hover_expand = FALSE;
1750
1751   tree_view->priv->level_indentation = 0;
1752
1753   tree_view->priv->rubber_banding_enable = FALSE;
1754
1755   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1756   tree_view->priv->tree_lines_enabled = FALSE;
1757
1758   tree_view->priv->tooltip_column = -1;
1759
1760   tree_view->priv->post_validation_flag = FALSE;
1761
1762   tree_view->priv->last_button_x = -1;
1763   tree_view->priv->last_button_y = -1;
1764
1765   tree_view->priv->event_last_x = -10000;
1766   tree_view->priv->event_last_y = -10000;
1767
1768   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1769   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1770 }
1771
1772 \f
1773
1774 /* GObject Methods
1775  */
1776
1777 static void
1778 gtk_tree_view_set_property (GObject         *object,
1779                             guint            prop_id,
1780                             const GValue    *value,
1781                             GParamSpec      *pspec)
1782 {
1783   GtkTreeView *tree_view;
1784
1785   tree_view = GTK_TREE_VIEW (object);
1786
1787   switch (prop_id)
1788     {
1789     case PROP_MODEL:
1790       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HADJUSTMENT:
1793       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1794       break;
1795     case PROP_VADJUSTMENT:
1796       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1797       break;
1798     case PROP_HSCROLL_POLICY:
1799       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1800       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1801       break;
1802     case PROP_VSCROLL_POLICY:
1803       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1804       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1805       break;
1806     case PROP_HEADERS_VISIBLE:
1807       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1808       break;
1809     case PROP_HEADERS_CLICKABLE:
1810       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_EXPANDER_COLUMN:
1813       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1814       break;
1815     case PROP_REORDERABLE:
1816       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_RULES_HINT:
1819       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1820       break;
1821     case PROP_ENABLE_SEARCH:
1822       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_SEARCH_COLUMN:
1825       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1826       break;
1827     case PROP_FIXED_HEIGHT_MODE:
1828       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1829       break;
1830     case PROP_HOVER_SELECTION:
1831       tree_view->priv->hover_selection = g_value_get_boolean (value);
1832       break;
1833     case PROP_HOVER_EXPAND:
1834       tree_view->priv->hover_expand = g_value_get_boolean (value);
1835       break;
1836     case PROP_SHOW_EXPANDERS:
1837       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1838       break;
1839     case PROP_LEVEL_INDENTATION:
1840       tree_view->priv->level_indentation = g_value_get_int (value);
1841       break;
1842     case PROP_RUBBER_BANDING:
1843       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1844       break;
1845     case PROP_ENABLE_GRID_LINES:
1846       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1847       break;
1848     case PROP_ENABLE_TREE_LINES:
1849       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1850       break;
1851     case PROP_TOOLTIP_COLUMN:
1852       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1853       break;
1854     default:
1855       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1856       break;
1857     }
1858 }
1859
1860 static void
1861 gtk_tree_view_get_property (GObject    *object,
1862                             guint       prop_id,
1863                             GValue     *value,
1864                             GParamSpec *pspec)
1865 {
1866   GtkTreeView *tree_view;
1867
1868   tree_view = GTK_TREE_VIEW (object);
1869
1870   switch (prop_id)
1871     {
1872     case PROP_MODEL:
1873       g_value_set_object (value, tree_view->priv->model);
1874       break;
1875     case PROP_HADJUSTMENT:
1876       g_value_set_object (value, tree_view->priv->hadjustment);
1877       break;
1878     case PROP_VADJUSTMENT:
1879       g_value_set_object (value, tree_view->priv->vadjustment);
1880       break;
1881     case PROP_HSCROLL_POLICY:
1882       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1883       break;
1884     case PROP_VSCROLL_POLICY:
1885       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1886       break;
1887     case PROP_HEADERS_VISIBLE:
1888       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1889       break;
1890     case PROP_HEADERS_CLICKABLE:
1891       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1892       break;
1893     case PROP_EXPANDER_COLUMN:
1894       g_value_set_object (value, tree_view->priv->expander_column);
1895       break;
1896     case PROP_REORDERABLE:
1897       g_value_set_boolean (value, tree_view->priv->reorderable);
1898       break;
1899     case PROP_RULES_HINT:
1900       g_value_set_boolean (value, tree_view->priv->has_rules);
1901       break;
1902     case PROP_ENABLE_SEARCH:
1903       g_value_set_boolean (value, tree_view->priv->enable_search);
1904       break;
1905     case PROP_SEARCH_COLUMN:
1906       g_value_set_int (value, tree_view->priv->search_column);
1907       break;
1908     case PROP_FIXED_HEIGHT_MODE:
1909       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1910       break;
1911     case PROP_HOVER_SELECTION:
1912       g_value_set_boolean (value, tree_view->priv->hover_selection);
1913       break;
1914     case PROP_HOVER_EXPAND:
1915       g_value_set_boolean (value, tree_view->priv->hover_expand);
1916       break;
1917     case PROP_SHOW_EXPANDERS:
1918       g_value_set_boolean (value, tree_view->priv->show_expanders);
1919       break;
1920     case PROP_LEVEL_INDENTATION:
1921       g_value_set_int (value, tree_view->priv->level_indentation);
1922       break;
1923     case PROP_RUBBER_BANDING:
1924       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1925       break;
1926     case PROP_ENABLE_GRID_LINES:
1927       g_value_set_enum (value, tree_view->priv->grid_lines);
1928       break;
1929     case PROP_ENABLE_TREE_LINES:
1930       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1931       break;
1932     case PROP_TOOLTIP_COLUMN:
1933       g_value_set_int (value, tree_view->priv->tooltip_column);
1934       break;
1935     default:
1936       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1937       break;
1938     }
1939 }
1940
1941 static void
1942 gtk_tree_view_finalize (GObject *object)
1943 {
1944   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1945 }
1946
1947
1948 static GtkBuildableIface *parent_buildable_iface;
1949
1950 static void
1951 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1952 {
1953   parent_buildable_iface = g_type_interface_peek_parent (iface);
1954   iface->add_child = gtk_tree_view_buildable_add_child;
1955   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1956 }
1957
1958 static void
1959 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1960                                    GtkBuilder  *builder,
1961                                    GObject     *child,
1962                                    const gchar *type)
1963 {
1964   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1965 }
1966
1967 static GObject *
1968 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1969                                             GtkBuilder        *builder,
1970                                             const gchar       *childname)
1971 {
1972     if (strcmp (childname, "selection") == 0)
1973       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1974
1975     return parent_buildable_iface->get_internal_child (buildable,
1976                                                        builder,
1977                                                        childname);
1978 }
1979
1980 /* GtkWidget Methods
1981  */
1982
1983 static void
1984 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1985 {
1986   _gtk_rbtree_free (tree_view->priv->tree);
1987
1988   tree_view->priv->tree = NULL;
1989   tree_view->priv->button_pressed_node = NULL;
1990   tree_view->priv->button_pressed_tree = NULL;
1991   tree_view->priv->prelight_tree = NULL;
1992   tree_view->priv->prelight_node = NULL;
1993   tree_view->priv->expanded_collapsed_node = NULL;
1994   tree_view->priv->expanded_collapsed_tree = NULL;
1995 }
1996
1997 static void
1998 gtk_tree_view_destroy (GtkWidget *widget)
1999 {
2000   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2001   GList *list;
2002
2003   gtk_tree_view_stop_editing (tree_view, TRUE);
2004
2005   if (tree_view->priv->columns != NULL)
2006     {
2007       list = tree_view->priv->columns;
2008       while (list)
2009         {
2010           GtkTreeViewColumn *column;
2011           column = GTK_TREE_VIEW_COLUMN (list->data);
2012           list = list->next;
2013           gtk_tree_view_remove_column (tree_view, column);
2014         }
2015       tree_view->priv->columns = NULL;
2016     }
2017
2018   if (tree_view->priv->tree != NULL)
2019     {
2020       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2021
2022       gtk_tree_view_free_rbtree (tree_view);
2023     }
2024
2025   if (tree_view->priv->selection != NULL)
2026     {
2027       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2028       g_object_unref (tree_view->priv->selection);
2029       tree_view->priv->selection = NULL;
2030     }
2031
2032   if (tree_view->priv->scroll_to_path != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2035       tree_view->priv->scroll_to_path = NULL;
2036     }
2037
2038   if (tree_view->priv->drag_dest_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2041       tree_view->priv->drag_dest_row = NULL;
2042     }
2043
2044   if (tree_view->priv->top_row != NULL)
2045     {
2046       gtk_tree_row_reference_free (tree_view->priv->top_row);
2047       tree_view->priv->top_row = NULL;
2048     }
2049
2050   if (tree_view->priv->column_drop_func_data &&
2051       tree_view->priv->column_drop_func_data_destroy)
2052     {
2053       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2054       tree_view->priv->column_drop_func_data = NULL;
2055     }
2056
2057   if (tree_view->priv->destroy_count_destroy &&
2058       tree_view->priv->destroy_count_data)
2059     {
2060       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2061       tree_view->priv->destroy_count_data = NULL;
2062     }
2063
2064   gtk_tree_row_reference_free (tree_view->priv->anchor);
2065   tree_view->priv->anchor = NULL;
2066
2067   /* destroy interactive search dialog */
2068   if (tree_view->priv->search_window)
2069     {
2070       gtk_widget_destroy (tree_view->priv->search_window);
2071       tree_view->priv->search_window = NULL;
2072       tree_view->priv->search_entry = NULL;
2073       if (tree_view->priv->typeselect_flush_timeout)
2074         {
2075           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2076           tree_view->priv->typeselect_flush_timeout = 0;
2077         }
2078     }
2079
2080   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2081     {
2082       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2083       tree_view->priv->search_user_data = NULL;
2084     }
2085
2086   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2087     {
2088       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2089       tree_view->priv->search_position_user_data = NULL;
2090     }
2091
2092   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2093     {
2094       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2095       tree_view->priv->row_separator_data = NULL;
2096     }
2097
2098   gtk_tree_view_set_model (tree_view, NULL);
2099
2100   if (tree_view->priv->hadjustment)
2101     {
2102       g_object_unref (tree_view->priv->hadjustment);
2103       tree_view->priv->hadjustment = NULL;
2104     }
2105   if (tree_view->priv->vadjustment)
2106     {
2107       g_object_unref (tree_view->priv->vadjustment);
2108       tree_view->priv->vadjustment = NULL;
2109     }
2110
2111   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2112 }
2113
2114 /* GtkWidget::map helper */
2115 static void
2116 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2117 {
2118   GList *list;
2119
2120   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2121
2122   if (tree_view->priv->headers_visible)
2123     {
2124       GtkTreeViewColumn *column;
2125       GtkWidget         *button;
2126       GdkWindow         *window;
2127
2128       for (list = tree_view->priv->columns; list; list = list->next)
2129         {
2130           column = list->data;
2131           button = gtk_tree_view_column_get_button (column);
2132
2133           if (gtk_tree_view_column_get_visible (column) && button)
2134             gtk_widget_show_now (button);
2135
2136           if (gtk_widget_get_visible (button) &&
2137               !gtk_widget_get_mapped (button))
2138             gtk_widget_map (button);
2139         }
2140       for (list = tree_view->priv->columns; list; list = list->next)
2141         {
2142           column = list->data;
2143           if (gtk_tree_view_column_get_visible (column) == FALSE)
2144             continue;
2145
2146           window = _gtk_tree_view_column_get_window (column);
2147           if (gtk_tree_view_column_get_resizable (column))
2148             {
2149               gdk_window_raise (window);
2150               gdk_window_show (window);
2151             }
2152           else
2153             gdk_window_hide (window);
2154         }
2155       gdk_window_show (tree_view->priv->header_window);
2156     }
2157 }
2158
2159 static void
2160 gtk_tree_view_map (GtkWidget *widget)
2161 {
2162   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2163   GList *tmp_list;
2164
2165   gtk_widget_set_mapped (widget, TRUE);
2166
2167   tmp_list = tree_view->priv->children;
2168   while (tmp_list)
2169     {
2170       GtkTreeViewChild *child = tmp_list->data;
2171       tmp_list = tmp_list->next;
2172
2173       if (gtk_widget_get_visible (child->widget))
2174         {
2175           if (!gtk_widget_get_mapped (child->widget))
2176             gtk_widget_map (child->widget);
2177         }
2178     }
2179   gdk_window_show (tree_view->priv->bin_window);
2180
2181   gtk_tree_view_map_buttons (tree_view);
2182
2183   gdk_window_show (gtk_widget_get_window (widget));
2184 }
2185
2186 static void
2187 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2188 {
2189   GtkStyleContext *context;
2190
2191   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2192
2193   gtk_style_context_save (context);
2194   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2195   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2196   gtk_style_context_restore (context);
2197
2198   gtk_style_context_set_background (context, tree_view->priv->header_window);
2199 }
2200
2201 static void
2202 gtk_tree_view_realize (GtkWidget *widget)
2203 {
2204   GtkAllocation allocation;
2205   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2206   GdkWindow *window;
2207   GdkWindowAttr attributes;
2208   GList *tmp_list;
2209   gint attributes_mask;
2210
2211   gtk_widget_set_realized (widget, TRUE);
2212
2213   gtk_widget_get_allocation (widget, &allocation);
2214
2215   /* Make the main, clipping window */
2216   attributes.window_type = GDK_WINDOW_CHILD;
2217   attributes.x = allocation.x;
2218   attributes.y = allocation.y;
2219   attributes.width = allocation.width;
2220   attributes.height = allocation.height;
2221   attributes.wclass = GDK_INPUT_OUTPUT;
2222   attributes.visual = gtk_widget_get_visual (widget);
2223   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2224
2225   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2226
2227   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2228                            &attributes, attributes_mask);
2229   gtk_widget_set_window (widget, window);
2230   gdk_window_set_user_data (window, widget);
2231
2232   gtk_widget_get_allocation (widget, &allocation);
2233
2234   /* Make the window for the tree */
2235   attributes.x = 0;
2236   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2237   attributes.width = MAX (tree_view->priv->width, allocation.width);
2238   attributes.height = allocation.height;
2239   attributes.event_mask = (GDK_EXPOSURE_MASK |
2240                            GDK_SCROLL_MASK |
2241                            GDK_POINTER_MOTION_MASK |
2242                            GDK_ENTER_NOTIFY_MASK |
2243                            GDK_LEAVE_NOTIFY_MASK |
2244                            GDK_BUTTON_PRESS_MASK |
2245                            GDK_BUTTON_RELEASE_MASK |
2246                            gtk_widget_get_events (widget));
2247
2248   tree_view->priv->bin_window = gdk_window_new (window,
2249                                                 &attributes, attributes_mask);
2250   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2251
2252   gtk_widget_get_allocation (widget, &allocation);
2253
2254   /* Make the column header window */
2255   attributes.x = 0;
2256   attributes.y = 0;
2257   attributes.width = MAX (tree_view->priv->width, allocation.width);
2258   attributes.height = tree_view->priv->header_height;
2259   attributes.event_mask = (GDK_EXPOSURE_MASK |
2260                            GDK_SCROLL_MASK |
2261                            GDK_ENTER_NOTIFY_MASK |
2262                            GDK_LEAVE_NOTIFY_MASK |
2263                            GDK_BUTTON_PRESS_MASK |
2264                            GDK_BUTTON_RELEASE_MASK |
2265                            GDK_KEY_PRESS_MASK |
2266                            GDK_KEY_RELEASE_MASK |
2267                            gtk_widget_get_events (widget));
2268
2269   tree_view->priv->header_window = gdk_window_new (window,
2270                                                    &attributes, attributes_mask);
2271   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2272
2273   gtk_tree_view_ensure_background (tree_view);
2274
2275   tmp_list = tree_view->priv->children;
2276   while (tmp_list)
2277     {
2278       GtkTreeViewChild *child = tmp_list->data;
2279       tmp_list = tmp_list->next;
2280
2281       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2282     }
2283
2284   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2285     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2286
2287   /* Need to call those here, since they create GCs */
2288   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2289   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2290
2291   install_presize_handler (tree_view);
2292 }
2293
2294 static void
2295 gtk_tree_view_unrealize (GtkWidget *widget)
2296 {
2297   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2298   GtkTreeViewPrivate *priv = tree_view->priv;
2299   GtkStyleContext *context;
2300   GList *list;
2301
2302   if (priv->scroll_timeout != 0)
2303     {
2304       g_source_remove (priv->scroll_timeout);
2305       priv->scroll_timeout = 0;
2306     }
2307
2308   if (priv->auto_expand_timeout != 0)
2309     {
2310       g_source_remove (priv->auto_expand_timeout);
2311       priv->auto_expand_timeout = 0;
2312     }
2313
2314   if (priv->open_dest_timeout != 0)
2315     {
2316       g_source_remove (priv->open_dest_timeout);
2317       priv->open_dest_timeout = 0;
2318     }
2319
2320   context = gtk_widget_get_style_context (widget);
2321   gtk_style_context_cancel_animations (context, NULL);
2322
2323   if (priv->presize_handler_timer != 0)
2324     {
2325       g_source_remove (priv->presize_handler_timer);
2326       priv->presize_handler_timer = 0;
2327     }
2328
2329   if (priv->validate_rows_timer != 0)
2330     {
2331       g_source_remove (priv->validate_rows_timer);
2332       priv->validate_rows_timer = 0;
2333     }
2334
2335   if (priv->scroll_sync_timer != 0)
2336     {
2337       g_source_remove (priv->scroll_sync_timer);
2338       priv->scroll_sync_timer = 0;
2339     }
2340
2341   if (priv->typeselect_flush_timeout)
2342     {
2343       g_source_remove (priv->typeselect_flush_timeout);
2344       priv->typeselect_flush_timeout = 0;
2345     }
2346
2347   for (list = priv->columns; list; list = list->next)
2348     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2349
2350   gdk_window_set_user_data (priv->bin_window, NULL);
2351   gdk_window_destroy (priv->bin_window);
2352   priv->bin_window = NULL;
2353
2354   gdk_window_set_user_data (priv->header_window, NULL);
2355   gdk_window_destroy (priv->header_window);
2356   priv->header_window = NULL;
2357
2358   if (priv->drag_window)
2359     {
2360       gdk_window_set_user_data (priv->drag_window, NULL);
2361       gdk_window_destroy (priv->drag_window);
2362       priv->drag_window = NULL;
2363     }
2364
2365   if (priv->drag_highlight_window)
2366     {
2367       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2368       gdk_window_destroy (priv->drag_highlight_window);
2369       priv->drag_highlight_window = NULL;
2370     }
2371
2372   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2373 }
2374
2375 /* GtkWidget::size_request helper */
2376 static void
2377 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2378 {
2379   GList *list;
2380
2381   tree_view->priv->header_height = 0;
2382
2383   for (list = tree_view->priv->columns; list; list = list->next)
2384     {
2385       GtkRequisition     requisition;
2386       GtkTreeViewColumn *column = list->data;
2387       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2388
2389       if (button == NULL)
2390         continue;
2391
2392       gtk_widget_get_preferred_size (button, &requisition, NULL);
2393       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2394     }
2395 }
2396
2397
2398 /* Called only by ::size_request */
2399 static void
2400 gtk_tree_view_update_size (GtkTreeView *tree_view)
2401 {
2402   GList *list;
2403   GtkTreeViewColumn *column;
2404   gint i;
2405
2406   if (tree_view->priv->model == NULL)
2407     {
2408       tree_view->priv->width = 0;
2409       tree_view->priv->prev_width = 0;
2410       tree_view->priv->height = 0;
2411       return;
2412     }
2413
2414   tree_view->priv->prev_width = tree_view->priv->width;
2415   tree_view->priv->width = 0;
2416
2417   /* keep this in sync with size_allocate below */
2418   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2419     {
2420       column = list->data;
2421       if (!gtk_tree_view_column_get_visible (column))
2422         continue;
2423
2424       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2425     }
2426
2427   if (tree_view->priv->tree == NULL)
2428     tree_view->priv->height = 0;
2429   else
2430     tree_view->priv->height = tree_view->priv->tree->root->offset;
2431 }
2432
2433 static void
2434 gtk_tree_view_size_request (GtkWidget      *widget,
2435                             GtkRequisition *requisition,
2436                             gboolean        may_validate)
2437 {
2438   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2439
2440   if (may_validate)
2441     {
2442       /* we validate some rows initially just to make sure we have some size.
2443        * In practice, with a lot of static lists, this should get a good width.
2444        */
2445       do_validate_rows (tree_view, FALSE);
2446     }
2447
2448   gtk_tree_view_size_request_columns (tree_view);
2449   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2450
2451   requisition->width = tree_view->priv->width;
2452   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2453 }
2454
2455 static void
2456 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2457                                    gint      *minimum,
2458                                    gint      *natural)
2459 {
2460   GtkRequisition requisition;
2461
2462   gtk_tree_view_size_request (widget, &requisition, TRUE);
2463
2464   *minimum = *natural = requisition.width;
2465 }
2466
2467 static void
2468 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2469                                     gint      *minimum,
2470                                     gint      *natural)
2471 {
2472   GtkRequisition requisition;
2473
2474   gtk_tree_view_size_request (widget, &requisition, TRUE);
2475
2476   *minimum = *natural = requisition.height;
2477 }
2478
2479 static int
2480 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2481 {
2482   int width = 0;
2483   GList *list;
2484   gboolean rtl;
2485
2486   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2487   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2488        list->data != tree_view->priv->expander_column;
2489        list = (rtl ? list->prev : list->next))
2490     {
2491       GtkTreeViewColumn *column = list->data;
2492
2493       width += gtk_tree_view_column_get_width (column);
2494     }
2495
2496   return width;
2497 }
2498
2499 /* GtkWidget::size_allocate helper */
2500 static void
2501 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2502                                      gboolean  *width_changed)
2503 {
2504   GtkTreeView *tree_view;
2505   GList *list, *first_column, *last_column;
2506   GtkTreeViewColumn *column;
2507   GtkAllocation widget_allocation;
2508   gint width = 0;
2509   gint extra, extra_per_column, extra_for_last;
2510   gint full_requested_width = 0;
2511   gint number_of_expand_columns = 0;
2512   gboolean rtl;
2513   gboolean update_expand;
2514
2515   tree_view = GTK_TREE_VIEW (widget);
2516
2517   for (last_column = g_list_last (tree_view->priv->columns);
2518        last_column &&
2519        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2520        last_column = last_column->prev)
2521     ;
2522   if (last_column == NULL)
2523     return;
2524
2525   for (first_column = g_list_first (tree_view->priv->columns);
2526        first_column &&
2527        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2528        first_column = first_column->next)
2529     ;
2530
2531   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2532
2533   /* find out how many extra space and expandable columns we have */
2534   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2535     {
2536       column = (GtkTreeViewColumn *)list->data;
2537
2538       if (!gtk_tree_view_column_get_visible (column))
2539         continue;
2540
2541       full_requested_width += _gtk_tree_view_column_request_width (column);
2542
2543       if (gtk_tree_view_column_get_expand (column))
2544         number_of_expand_columns++;
2545     }
2546
2547   /* Only update the expand value if the width of the widget has changed,
2548    * or the number of expand columns has changed, or if there are no expand
2549    * columns, or if we didn't have an size-allocation yet after the
2550    * last validated node.
2551    */
2552   update_expand = (width_changed && *width_changed == TRUE)
2553       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2554       || number_of_expand_columns == 0
2555       || tree_view->priv->post_validation_flag == TRUE;
2556
2557   tree_view->priv->post_validation_flag = FALSE;
2558
2559   gtk_widget_get_allocation (widget, &widget_allocation);
2560   if (!update_expand)
2561     {
2562       extra = tree_view->priv->last_extra_space;
2563       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2564     }
2565   else
2566     {
2567       extra = MAX (widget_allocation.width - full_requested_width, 0);
2568       extra_for_last = 0;
2569
2570       tree_view->priv->last_extra_space = extra;
2571     }
2572
2573   if (number_of_expand_columns > 0)
2574     extra_per_column = extra/number_of_expand_columns;
2575   else
2576     extra_per_column = 0;
2577
2578   if (update_expand)
2579     {
2580       tree_view->priv->last_extra_space_per_column = extra_per_column;
2581       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2582     }
2583
2584   for (list = (rtl ? last_column : first_column);
2585        list != (rtl ? first_column->prev : last_column->next);
2586        list = (rtl ? list->prev : list->next))
2587     {
2588       gint column_width;
2589
2590       column = list->data;
2591
2592       if (!gtk_tree_view_column_get_visible (column))
2593         continue;
2594
2595       /* We need to handle the dragged button specially.
2596        */
2597       if (column == tree_view->priv->drag_column)
2598         {
2599           GtkAllocation drag_allocation;
2600           GtkWidget    *button;
2601
2602           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2603
2604           drag_allocation.x = 0;
2605           drag_allocation.y = 0;
2606           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2607           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2608           gtk_widget_size_allocate (button, &drag_allocation);
2609           width += drag_allocation.width;
2610           continue;
2611         }
2612
2613       column_width = _gtk_tree_view_column_request_width (column);
2614
2615       if (gtk_tree_view_column_get_expand (column))
2616         {
2617           if (number_of_expand_columns == 1)
2618             {
2619               /* We add the remander to the last column as
2620                * */
2621               column_width += extra;
2622             }
2623           else
2624             {
2625               column_width += extra_per_column;
2626               extra -= extra_per_column;
2627               number_of_expand_columns --;
2628             }
2629         }
2630       else if (number_of_expand_columns == 0 &&
2631                list == last_column)
2632         {
2633           column_width += extra;
2634         }
2635
2636       /* In addition to expand, the last column can get even more
2637        * extra space so all available space is filled up.
2638        */
2639       if (extra_for_last > 0 && list == last_column)
2640         column_width += extra_for_last;
2641
2642       _gtk_tree_view_column_allocate (column, width, column_width);
2643
2644       width += column_width;
2645     }
2646
2647   /* We change the width here.  The user might have been resizing columns,
2648    * which changes the total width of the tree view.  This is of
2649    * importance for getting the horizontal scroll bar right.
2650    */
2651   if (tree_view->priv->width != width)
2652     {
2653       tree_view->priv->width = width;
2654       if (width_changed)
2655         *width_changed = TRUE;
2656     }
2657 }
2658
2659
2660 static void
2661 gtk_tree_view_size_allocate (GtkWidget     *widget,
2662                              GtkAllocation *allocation)
2663 {
2664   GtkAllocation widget_allocation;
2665   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2666   GList *tmp_list;
2667   gboolean width_changed = FALSE;
2668   gint old_width;
2669
2670   gtk_widget_get_allocation (widget, &widget_allocation);
2671   old_width = widget_allocation.width;
2672   if (allocation->width != widget_allocation.width)
2673     width_changed = TRUE;
2674
2675   gtk_widget_set_allocation (widget, allocation);
2676
2677   tmp_list = tree_view->priv->children;
2678
2679   while (tmp_list)
2680     {
2681       GtkAllocation allocation;
2682
2683       GtkTreeViewChild *child = tmp_list->data;
2684       tmp_list = tmp_list->next;
2685
2686       /* totally ignore our child's requisition */
2687       allocation.x = child->x;
2688       allocation.y = child->y;
2689       allocation.width = child->width;
2690       allocation.height = child->height;
2691       gtk_widget_size_allocate (child->widget, &allocation);
2692     }
2693
2694   /* We size-allocate the columns first because the width of the
2695    * tree view (used in updating the adjustments below) might change.
2696    */
2697   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2698
2699   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2700   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2701                                 allocation->width);
2702   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2703                                      allocation->width * 0.9);
2704   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2705                                      allocation->width * 0.1);
2706   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2707   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2708                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2709                                  tree_view->priv->width));
2710   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2711
2712   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2713     {
2714       if (allocation->width < tree_view->priv->width)
2715         {
2716           if (tree_view->priv->init_hadjust_value)
2717             {
2718               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2719                                         MAX (tree_view->priv->width -
2720                                              allocation->width, 0));
2721               tree_view->priv->init_hadjust_value = FALSE;
2722             }
2723           else if (allocation->width != old_width)
2724             {
2725               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2726                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2727                                                0,
2728                                                tree_view->priv->width - allocation->width));
2729             }
2730           else
2731             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2732                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2733                                              0,
2734                                              tree_view->priv->width - allocation->width));
2735         }
2736       else
2737         {
2738           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2739           tree_view->priv->init_hadjust_value = TRUE;
2740         }
2741     }
2742   else
2743     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2744       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2745                                 MAX (tree_view->priv->width -
2746                                      allocation->width, 0));
2747
2748   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2749   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2750                                 allocation->height -
2751                                 gtk_tree_view_get_effective_header_height (tree_view));
2752   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2753                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2754   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2755                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2756   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2757   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2758                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2759                                  tree_view->priv->height));
2760   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2761
2762   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2763   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2764     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2765   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2766     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2767                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2768   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2769     gtk_tree_view_top_row_to_dy (tree_view);
2770   else
2771     gtk_tree_view_dy_to_top_row (tree_view);
2772
2773   if (gtk_widget_get_realized (widget))
2774     {
2775       gdk_window_move_resize (gtk_widget_get_window (widget),
2776                               allocation->x, allocation->y,
2777                               allocation->width, allocation->height);
2778       gdk_window_move_resize (tree_view->priv->header_window,
2779                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2780                               0,
2781                               MAX (tree_view->priv->width, allocation->width),
2782                               tree_view->priv->header_height);
2783       gdk_window_move_resize (tree_view->priv->bin_window,
2784                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2785                               gtk_tree_view_get_effective_header_height (tree_view),
2786                               MAX (tree_view->priv->width, allocation->width),
2787                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2788
2789       if (tree_view->priv->tree == NULL)
2790         invalidate_empty_focus (tree_view);
2791
2792       if (width_changed && tree_view->priv->expander_column)
2793         {
2794           /* Might seem awkward, but is the best heuristic I could come up
2795            * with.  Only if the width of the columns before the expander
2796            * changes, we will update the prelight status.  It is this
2797            * width that makes the expander move vertically.  Always updating
2798            * prelight status causes trouble with hover selections.
2799            */
2800           gint width_before_expander;
2801
2802           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2803
2804           if (tree_view->priv->prev_width_before_expander
2805               != width_before_expander)
2806               update_prelight (tree_view,
2807                                tree_view->priv->event_last_x,
2808                                tree_view->priv->event_last_y);
2809
2810           tree_view->priv->prev_width_before_expander = width_before_expander;
2811         }
2812     }
2813 }
2814
2815 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2816 static void
2817 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2818 {
2819   GtkWidget *widget = GTK_WIDGET (tree_view);
2820
2821   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2822     gtk_widget_grab_focus (widget);
2823   tree_view->priv->draw_keyfocus = 0;
2824 }
2825
2826 static inline gboolean
2827 row_is_separator (GtkTreeView *tree_view,
2828                   GtkTreeIter *iter,
2829                   GtkTreePath *path)
2830 {
2831   gboolean is_separator = FALSE;
2832
2833   if (tree_view->priv->row_separator_func)
2834     {
2835       GtkTreeIter tmpiter;
2836
2837       if (iter)
2838         tmpiter = *iter;
2839       else
2840         {
2841           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2842             return FALSE;
2843         }
2844
2845       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2846                                                           &tmpiter,
2847                                                           tree_view->priv->row_separator_data);
2848     }
2849
2850   return is_separator;
2851 }
2852
2853 static gboolean
2854 gtk_tree_view_button_press (GtkWidget      *widget,
2855                             GdkEventButton *event)
2856 {
2857   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2858   GList *list;
2859   GtkTreeViewColumn *column = NULL;
2860   gint i;
2861   GdkRectangle background_area;
2862   GdkRectangle cell_area;
2863   gint vertical_separator;
2864   gint horizontal_separator;
2865   gboolean path_is_selectable;
2866   gboolean rtl;
2867
2868   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2869   gtk_tree_view_stop_editing (tree_view, FALSE);
2870   gtk_widget_style_get (widget,
2871                         "vertical-separator", &vertical_separator,
2872                         "horizontal-separator", &horizontal_separator,
2873                         NULL);
2874
2875   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2876    * we're done handling the button press.
2877    */
2878
2879   if (event->window == tree_view->priv->bin_window)
2880     {
2881       GtkRBNode *node;
2882       GtkRBTree *tree;
2883       GtkTreePath *path;
2884       gint depth;
2885       gint new_y;
2886       gint y_offset;
2887       gint dval;
2888       gint pre_val, aft_val;
2889       GtkTreeViewColumn *column = NULL;
2890       gint column_handled_click = FALSE;
2891       gboolean row_double_click = FALSE;
2892       gboolean rtl;
2893       gboolean node_selected;
2894       GdkModifierType extend_mod_mask;
2895       GdkModifierType modify_mod_mask;
2896
2897       /* Empty tree? */
2898       if (tree_view->priv->tree == NULL)
2899         {
2900           grab_focus_and_unset_draw_keyfocus (tree_view);
2901           return TRUE;
2902         }
2903
2904       /* are we in an arrow? */
2905       if (tree_view->priv->prelight_node &&
2906           tree_view->priv->arrow_prelit &&
2907           gtk_tree_view_draw_expanders (tree_view))
2908         {
2909           if (event->button == 1)
2910             {
2911               gtk_grab_add (widget);
2912               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2913               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2914               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2915                                               tree_view->priv->prelight_tree,
2916                                               tree_view->priv->prelight_node);
2917             }
2918
2919           grab_focus_and_unset_draw_keyfocus (tree_view);
2920           return TRUE;
2921         }
2922
2923       /* find the node that was clicked */
2924       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2925       if (new_y < 0)
2926         new_y = 0;
2927       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2928
2929       if (node == NULL)
2930         {
2931           /* We clicked in dead space */
2932           grab_focus_and_unset_draw_keyfocus (tree_view);
2933           return TRUE;
2934         }
2935
2936       /* Get the path and the node */
2937       path = _gtk_tree_path_new_from_rbtree (tree, node);
2938       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2939
2940       if (!path_is_selectable)
2941         {
2942           gtk_tree_path_free (path);
2943           grab_focus_and_unset_draw_keyfocus (tree_view);
2944           return TRUE;
2945         }
2946
2947       depth = gtk_tree_path_get_depth (path);
2948       background_area.y = y_offset + event->y;
2949       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2950       background_area.x = 0;
2951
2952
2953       /* Let the column have a chance at selecting it. */
2954       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2955       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2956            list; list = (rtl ? list->prev : list->next))
2957         {
2958           GtkTreeViewColumn *candidate = list->data;
2959
2960           if (!gtk_tree_view_column_get_visible (candidate))
2961             continue;
2962
2963           background_area.width = gtk_tree_view_column_get_width (candidate);
2964           if ((background_area.x > (gint) event->x) ||
2965               (background_area.x + background_area.width <= (gint) event->x))
2966             {
2967               background_area.x += background_area.width;
2968               continue;
2969             }
2970
2971           /* we found the focus column */
2972           column = candidate;
2973           cell_area = background_area;
2974           cell_area.width -= horizontal_separator;
2975           cell_area.height -= vertical_separator;
2976           cell_area.x += horizontal_separator/2;
2977           cell_area.y += vertical_separator/2;
2978           if (gtk_tree_view_is_expander_column (tree_view, column))
2979             {
2980               if (!rtl)
2981                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2982               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2983
2984               if (gtk_tree_view_draw_expanders (tree_view))
2985                 {
2986                   if (!rtl)
2987                     cell_area.x += depth * tree_view->priv->expander_size;
2988                   cell_area.width -= depth * tree_view->priv->expander_size;
2989                 }
2990             }
2991           break;
2992         }
2993
2994       if (column == NULL)
2995         {
2996           gtk_tree_path_free (path);
2997           grab_focus_and_unset_draw_keyfocus (tree_view);
2998           return FALSE;
2999         }
3000
3001       tree_view->priv->focus_column = column;
3002
3003       /* decide if we edit */
3004       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3005           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3006         {
3007           GtkTreePath *anchor;
3008           GtkTreeIter iter;
3009
3010           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3011           gtk_tree_view_column_cell_set_cell_data (column,
3012                                                    tree_view->priv->model,
3013                                                    &iter,
3014                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3015                                                    node->children?TRUE:FALSE);
3016
3017           if (tree_view->priv->anchor)
3018             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3019           else
3020             anchor = NULL;
3021
3022           if ((anchor && !gtk_tree_path_compare (anchor, path))
3023               || !_gtk_tree_view_column_has_editable_cell (column))
3024             {
3025               GtkCellEditable *cell_editable = NULL;
3026
3027               /* FIXME: get the right flags */
3028               guint flags = 0;
3029
3030               if (_gtk_tree_view_column_cell_event (column,
3031                                                     (GdkEvent *)event,
3032                                                     &cell_area, flags))
3033                 {
3034                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3035                   cell_editable = gtk_cell_area_get_edit_widget (area);
3036
3037                   if (cell_editable != NULL)
3038                     {
3039                       gtk_tree_path_free (path);
3040                       gtk_tree_path_free (anchor);
3041                       return TRUE;
3042                     }
3043                   column_handled_click = TRUE;
3044                 }
3045             }
3046           if (anchor)
3047             gtk_tree_path_free (anchor);
3048         }
3049
3050       extend_mod_mask =
3051         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3052
3053       modify_mod_mask =
3054         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3055
3056       /* select */
3057       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3058       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3059
3060       /* we only handle selection modifications on the first button press
3061        */
3062       if (event->type == GDK_BUTTON_PRESS)
3063         {
3064           GtkCellRenderer *focus_cell;
3065
3066           if ((event->state & modify_mod_mask) == modify_mod_mask)
3067             tree_view->priv->modify_selection_pressed = TRUE;
3068           if ((event->state & extend_mod_mask) == extend_mod_mask)
3069             tree_view->priv->extend_selection_pressed = TRUE;
3070
3071           /* We update the focus cell here, this is also needed if the
3072            * column does not contain an editable cell.  In this case,
3073            * GtkCellArea did not receive the event for processing (and
3074            * could not update the focus cell).
3075            */
3076           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3077                                                               &cell_area,
3078                                                               &background_area,
3079                                                               event->x,
3080                                                               event->y);
3081
3082           if (focus_cell)
3083             gtk_tree_view_column_focus_cell (column, focus_cell);
3084
3085           if (event->state & modify_mod_mask)
3086             {
3087               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3088               gtk_tree_view_real_toggle_cursor_row (tree_view);
3089             }
3090           else if (event->state & extend_mod_mask)
3091             {
3092               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3093               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3094             }
3095           else
3096             {
3097               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3098             }
3099
3100           tree_view->priv->modify_selection_pressed = FALSE;
3101           tree_view->priv->extend_selection_pressed = FALSE;
3102         }
3103
3104       /* the treeview may have been scrolled because of _set_cursor,
3105        * correct here
3106        */
3107
3108       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3109       dval = pre_val - aft_val;
3110
3111       cell_area.y += dval;
3112       background_area.y += dval;
3113
3114       /* Save press to possibly begin a drag
3115        */
3116       if (!column_handled_click &&
3117           !tree_view->priv->in_grab &&
3118           tree_view->priv->pressed_button < 0)
3119         {
3120           tree_view->priv->pressed_button = event->button;
3121           tree_view->priv->press_start_x = event->x;
3122           tree_view->priv->press_start_y = event->y;
3123
3124           if (tree_view->priv->rubber_banding_enable
3125               && !node_selected
3126               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3127             {
3128               tree_view->priv->press_start_y += tree_view->priv->dy;
3129               tree_view->priv->rubber_band_x = event->x;
3130               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3131               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3132
3133               if ((event->state & modify_mod_mask) == modify_mod_mask)
3134                 tree_view->priv->rubber_band_modify = TRUE;
3135               if ((event->state & extend_mod_mask) == extend_mod_mask)
3136                 tree_view->priv->rubber_band_extend = TRUE;
3137             }
3138         }
3139
3140       /* Test if a double click happened on the same row. */
3141       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3142         {
3143           int double_click_time, double_click_distance;
3144
3145           g_object_get (gtk_settings_get_default (),
3146                         "gtk-double-click-time", &double_click_time,
3147                         "gtk-double-click-distance", &double_click_distance,
3148                         NULL);
3149
3150           /* Same conditions as _gdk_event_button_generate */
3151           if (tree_view->priv->last_button_x != -1 &&
3152               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3153               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3154               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3155             {
3156               /* We do no longer compare paths of this row and the
3157                * row clicked previously.  We use the double click
3158                * distance to decide whether this is a valid click,
3159                * allowing the mouse to slightly move over another row.
3160                */
3161               row_double_click = TRUE;
3162
3163               tree_view->priv->last_button_time = 0;
3164               tree_view->priv->last_button_x = -1;
3165               tree_view->priv->last_button_y = -1;
3166             }
3167           else
3168             {
3169               tree_view->priv->last_button_time = event->time;
3170               tree_view->priv->last_button_x = event->x;
3171               tree_view->priv->last_button_y = event->y;
3172             }
3173         }
3174
3175       if (row_double_click)
3176         {
3177           gtk_grab_remove (widget);
3178           gtk_tree_view_row_activated (tree_view, path, column);
3179
3180           if (tree_view->priv->pressed_button == event->button)
3181             tree_view->priv->pressed_button = -1;
3182         }
3183
3184       gtk_tree_path_free (path);
3185
3186       /* If we activated the row through a double click we don't want to grab
3187        * focus back, as moving focus to another widget is pretty common.
3188        */
3189       if (!row_double_click)
3190         grab_focus_and_unset_draw_keyfocus (tree_view);
3191
3192       return TRUE;
3193     }
3194
3195   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3196    */
3197   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3198     {
3199       column = list->data;
3200       if (event->window == _gtk_tree_view_column_get_window (column) &&
3201           gtk_tree_view_column_get_resizable (column) &&
3202           _gtk_tree_view_column_get_window (column))
3203         {
3204           gpointer drag_data;
3205
3206           if (event->type == GDK_2BUTTON_PRESS &&
3207               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3208             {
3209               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3210               _gtk_tree_view_column_autosize (tree_view, column);
3211               return TRUE;
3212             }
3213
3214           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3215                                _gtk_tree_view_column_get_window (column),
3216                                GDK_OWNERSHIP_NONE,
3217                                FALSE,
3218                                GDK_POINTER_MOTION_HINT_MASK
3219                                 | GDK_BUTTON1_MOTION_MASK
3220                                 | GDK_BUTTON_RELEASE_MASK,
3221                                NULL,
3222                                event->time) != GDK_GRAB_SUCCESS)
3223             return FALSE;
3224
3225           gtk_grab_add (widget);
3226           tree_view->priv->in_column_resize = TRUE;
3227
3228           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3229                                                    tree_view->priv->last_extra_space_per_column);
3230
3231           /* block attached dnd signal handler */
3232           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3233           if (drag_data)
3234             g_signal_handlers_block_matched (widget,
3235                                              G_SIGNAL_MATCH_DATA,
3236                                              0, 0, NULL, NULL,
3237                                              drag_data);
3238
3239           tree_view->priv->drag_pos = i;
3240           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3241
3242           if (!gtk_widget_has_focus (widget))
3243             gtk_widget_grab_focus (widget);
3244
3245           return TRUE;
3246         }
3247     }
3248   return FALSE;
3249 }
3250
3251 /* GtkWidget::button_release_event helper */
3252 static gboolean
3253 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3254                                           GdkEventButton *event)
3255 {
3256   GtkTreeView *tree_view;
3257   GtkWidget *button;
3258   GList *l;
3259   gboolean rtl;
3260   GdkDevice *device, *other;
3261
3262   tree_view = GTK_TREE_VIEW (widget);
3263
3264   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3265   device = gdk_event_get_device ((GdkEvent*)event);
3266   other = gdk_device_get_associated_device (device);
3267   gdk_device_ungrab (device, event->time);
3268   gdk_device_ungrab (other, event->time);
3269
3270   /* Move the button back */
3271   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3272   g_object_ref (button);
3273   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3274   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3275   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3276   g_object_unref (button);
3277   gtk_widget_queue_resize (widget);
3278   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3279     {
3280       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3281       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282     }
3283   else
3284     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3285
3286   gtk_widget_grab_focus (button);
3287
3288   if (rtl)
3289     {
3290       if (tree_view->priv->cur_reorder &&
3291           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3292         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3293                                          tree_view->priv->cur_reorder->right_column);
3294     }
3295   else
3296     {
3297       if (tree_view->priv->cur_reorder &&
3298           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3299         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3300                                          tree_view->priv->cur_reorder->left_column);
3301     }
3302   tree_view->priv->drag_column = NULL;
3303   gdk_window_hide (tree_view->priv->drag_window);
3304
3305   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3306     g_slice_free (GtkTreeViewColumnReorder, l->data);
3307   g_list_free (tree_view->priv->column_drag_info);
3308   tree_view->priv->column_drag_info = NULL;
3309   tree_view->priv->cur_reorder = NULL;
3310
3311   if (tree_view->priv->drag_highlight_window)
3312     gdk_window_hide (tree_view->priv->drag_highlight_window);
3313
3314   /* Reset our flags */
3315   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3316   tree_view->priv->in_column_drag = FALSE;
3317
3318   return TRUE;
3319 }
3320
3321 /* GtkWidget::button_release_event helper */
3322 static gboolean
3323 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3324                                             GdkEventButton *event)
3325 {
3326   GtkTreeView *tree_view;
3327   gpointer drag_data;
3328
3329   tree_view = GTK_TREE_VIEW (widget);
3330
3331   tree_view->priv->drag_pos = -1;
3332
3333   /* unblock attached dnd signal handler */
3334   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3335   if (drag_data)
3336     g_signal_handlers_unblock_matched (widget,
3337                                        G_SIGNAL_MATCH_DATA,
3338                                        0, 0, NULL, NULL,
3339                                        drag_data);
3340
3341   tree_view->priv->in_column_resize = FALSE;
3342   gtk_grab_remove (widget);
3343   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3344   return TRUE;
3345 }
3346
3347 static gboolean
3348 gtk_tree_view_button_release (GtkWidget      *widget,
3349                               GdkEventButton *event)
3350 {
3351   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3352
3353   if (tree_view->priv->in_column_drag)
3354     return gtk_tree_view_button_release_drag_column (widget, event);
3355
3356   if (tree_view->priv->rubber_band_status)
3357     gtk_tree_view_stop_rubber_band (tree_view);
3358
3359   if (tree_view->priv->pressed_button == event->button)
3360     tree_view->priv->pressed_button = -1;
3361
3362   if (tree_view->priv->in_column_resize)
3363     return gtk_tree_view_button_release_column_resize (widget, event);
3364
3365   if (tree_view->priv->button_pressed_node == NULL)
3366     return FALSE;
3367
3368   if (event->button == 1)
3369     {
3370       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3371           tree_view->priv->arrow_prelit)
3372         {
3373           GtkTreePath *path = NULL;
3374
3375           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3376                                                  tree_view->priv->button_pressed_node);
3377           /* Actually activate the node */
3378           if (tree_view->priv->button_pressed_node->children == NULL)
3379             gtk_tree_view_real_expand_row (tree_view, path,
3380                                            tree_view->priv->button_pressed_tree,
3381                                            tree_view->priv->button_pressed_node,
3382                                            FALSE, TRUE);
3383           else
3384             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3385                                              tree_view->priv->button_pressed_tree,
3386                                              tree_view->priv->button_pressed_node, TRUE);
3387           gtk_tree_path_free (path);
3388         }
3389
3390       gtk_grab_remove (widget);
3391       tree_view->priv->button_pressed_tree = NULL;
3392       tree_view->priv->button_pressed_node = NULL;
3393     }
3394
3395   return TRUE;
3396 }
3397
3398 static gboolean
3399 gtk_tree_view_grab_broken (GtkWidget          *widget,
3400                            GdkEventGrabBroken *event)
3401 {
3402   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3403
3404   if (tree_view->priv->in_column_drag)
3405     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3406
3407   if (tree_view->priv->in_column_resize)
3408     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3409
3410   return TRUE;
3411 }
3412
3413 #if 0
3414 static gboolean
3415 gtk_tree_view_configure (GtkWidget *widget,
3416                          GdkEventConfigure *event)
3417 {
3418   GtkTreeView *tree_view;
3419
3420   tree_view = GTK_TREE_VIEW (widget);
3421   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3422
3423   return FALSE;
3424 }
3425 #endif
3426
3427 /* GtkWidget::motion_event function set.
3428  */
3429
3430 static gboolean
3431 coords_are_over_arrow (GtkTreeView *tree_view,
3432                        GtkRBTree   *tree,
3433                        GtkRBNode   *node,
3434                        /* these are in bin window coords */
3435                        gint         x,
3436                        gint         y)
3437 {
3438   GdkRectangle arrow;
3439   gint x2;
3440
3441   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3442     return FALSE;
3443
3444   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3445     return FALSE;
3446
3447   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3448   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3449
3450   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3451
3452   arrow.width = x2 - arrow.x;
3453
3454   return (x >= arrow.x &&
3455           x < (arrow.x + arrow.width) &&
3456           y >= arrow.y &&
3457           y < (arrow.y + arrow.height));
3458 }
3459
3460 static gboolean
3461 auto_expand_timeout (gpointer data)
3462 {
3463   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3464   GtkTreePath *path;
3465
3466   if (tree_view->priv->prelight_node)
3467     {
3468       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3469                                              tree_view->priv->prelight_node);
3470
3471       if (tree_view->priv->prelight_node->children)
3472         gtk_tree_view_collapse_row (tree_view, path);
3473       else
3474         gtk_tree_view_expand_row (tree_view, path, FALSE);
3475
3476       gtk_tree_path_free (path);
3477     }
3478
3479   tree_view->priv->auto_expand_timeout = 0;
3480
3481   return FALSE;
3482 }
3483
3484 static void
3485 remove_auto_expand_timeout (GtkTreeView *tree_view)
3486 {
3487   if (tree_view->priv->auto_expand_timeout != 0)
3488     {
3489       g_source_remove (tree_view->priv->auto_expand_timeout);
3490       tree_view->priv->auto_expand_timeout = 0;
3491     }
3492 }
3493
3494 static void
3495 do_prelight (GtkTreeView *tree_view,
3496              GtkRBTree   *tree,
3497              GtkRBNode   *node,
3498              /* these are in bin_window coords */
3499              gint         x,
3500              gint         y)
3501 {
3502   if (tree_view->priv->prelight_tree == tree &&
3503       tree_view->priv->prelight_node == node)
3504     {
3505       /*  We are still on the same node,
3506           but we might need to take care of the arrow  */
3507
3508       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3509         {
3510           gboolean over_arrow;
3511
3512           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3513
3514           if (over_arrow != tree_view->priv->arrow_prelit)
3515             {
3516               if (over_arrow)
3517                 tree_view->priv->arrow_prelit = TRUE;
3518               else
3519                 tree_view->priv->arrow_prelit = FALSE;
3520
3521               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3522             }
3523         }
3524
3525       return;
3526     }
3527
3528   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3529     {
3530       /*  Unprelight the old node and arrow  */
3531
3532       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3533                              GTK_RBNODE_IS_PRELIT);
3534
3535       if (tree_view->priv->arrow_prelit
3536           && gtk_tree_view_draw_expanders (tree_view))
3537         {
3538           tree_view->priv->arrow_prelit = FALSE;
3539
3540           gtk_tree_view_queue_draw_arrow (tree_view,
3541                                           tree_view->priv->prelight_tree,
3542                                           tree_view->priv->prelight_node);
3543         }
3544
3545       _gtk_tree_view_queue_draw_node (tree_view,
3546                                       tree_view->priv->prelight_tree,
3547                                       tree_view->priv->prelight_node,
3548                                       NULL);
3549     }
3550
3551
3552   if (tree_view->priv->hover_expand)
3553     remove_auto_expand_timeout (tree_view);
3554
3555   /*  Set the new prelight values  */
3556   tree_view->priv->prelight_node = node;
3557   tree_view->priv->prelight_tree = tree;
3558
3559   if (!node || !tree)
3560     return;
3561
3562   /*  Prelight the new node and arrow  */
3563
3564   if (gtk_tree_view_draw_expanders (tree_view)
3565       && coords_are_over_arrow (tree_view, tree, node, x, y))
3566     {
3567       tree_view->priv->arrow_prelit = TRUE;
3568
3569       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3570     }
3571
3572   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3573
3574   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3575
3576   if (tree_view->priv->hover_expand)
3577     {
3578       tree_view->priv->auto_expand_timeout =
3579         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3580     }
3581 }
3582
3583 static void
3584 prelight_or_select (GtkTreeView *tree_view,
3585                     GtkRBTree   *tree,
3586                     GtkRBNode   *node,
3587                     /* these are in bin_window coords */
3588                     gint         x,
3589                     gint         y)
3590 {
3591   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3592
3593   if (tree_view->priv->hover_selection &&
3594       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3595       !(tree_view->priv->edited_column &&
3596         gtk_cell_area_get_edit_widget
3597         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3598     {
3599       if (node)
3600         {
3601           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3602             {
3603               GtkTreePath *path;
3604
3605               path = _gtk_tree_path_new_from_rbtree (tree, node);
3606               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3607               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3608                 {
3609                   tree_view->priv->draw_keyfocus = FALSE;
3610                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3611                 }
3612               gtk_tree_path_free (path);
3613             }
3614         }
3615
3616       else if (mode == GTK_SELECTION_SINGLE)
3617         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3618     }
3619
3620     do_prelight (tree_view, tree, node, x, y);
3621 }
3622
3623 static void
3624 ensure_unprelighted (GtkTreeView *tree_view)
3625 {
3626   do_prelight (tree_view,
3627                NULL, NULL,
3628                -1000, -1000); /* coords not possibly over an arrow */
3629
3630   g_assert (tree_view->priv->prelight_node == NULL);
3631 }
3632
3633 static void
3634 update_prelight (GtkTreeView *tree_view,
3635                  gint         x,
3636                  gint         y)
3637 {
3638   int new_y;
3639   GtkRBTree *tree;
3640   GtkRBNode *node;
3641
3642   if (tree_view->priv->tree == NULL)
3643     return;
3644
3645   if (x == -10000)
3646     {
3647       ensure_unprelighted (tree_view);
3648       return;
3649     }
3650
3651   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3652   if (new_y < 0)
3653     new_y = 0;
3654
3655   _gtk_rbtree_find_offset (tree_view->priv->tree,
3656                            new_y, &tree, &node);
3657
3658   if (node)
3659     prelight_or_select (tree_view, tree, node, x, y);
3660 }
3661
3662
3663
3664
3665 /* Our motion arrow is either a box (in the case of the original spot)
3666  * or an arrow.  It is expander_size wide.
3667  */
3668 /*
3669  * 11111111111111
3670  * 01111111111110
3671  * 00111111111100
3672  * 00011111111000
3673  * 00001111110000
3674  * 00000111100000
3675  * 00000111100000
3676  * 00000111100000
3677  * ~ ~ ~ ~ ~ ~ ~
3678  * 00000111100000
3679  * 00000111100000
3680  * 00000111100000
3681  * 00001111110000
3682  * 00011111111000
3683  * 00111111111100
3684  * 01111111111110
3685  * 11111111111111
3686  */
3687
3688 static void
3689 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3690 {
3691   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3692   GtkWidget *widget = GTK_WIDGET (tree_view);
3693   cairo_surface_t *mask_image;
3694   cairo_region_t *mask_region;
3695   gint x;
3696   gint y;
3697   gint width;
3698   gint height;
3699   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3700   GdkWindowAttr attributes;
3701   guint attributes_mask;
3702   cairo_t *cr;
3703
3704   if (!reorder ||
3705       reorder->left_column == tree_view->priv->drag_column ||
3706       reorder->right_column == tree_view->priv->drag_column)
3707     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3708   else if (reorder->left_column || reorder->right_column)
3709     {
3710       GtkAllocation left_allocation, right_allocation;
3711       GdkRectangle visible_rect;
3712       GtkWidget *button;
3713
3714       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3715       if (reorder->left_column)
3716         {
3717           button = gtk_tree_view_column_get_button (reorder->left_column);
3718           gtk_widget_get_allocation (button, &left_allocation);
3719           x = left_allocation.x + left_allocation.width;
3720         }
3721       else
3722         {
3723           button = gtk_tree_view_column_get_button (reorder->right_column);
3724           gtk_widget_get_allocation (button, &right_allocation);
3725           x = right_allocation.x;
3726         }
3727
3728       if (x < visible_rect.x)
3729         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3730       else if (x > visible_rect.x + visible_rect.width)
3731         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3732       else
3733         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3734     }
3735
3736   /* We want to draw the rectangle over the initial location. */
3737   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3738     {
3739       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3740         {
3741           GtkAllocation drag_allocation;
3742           GtkWidget    *button;
3743
3744           if (tree_view->priv->drag_highlight_window)
3745             {
3746               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3747                                         NULL);
3748               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3749             }
3750
3751           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3752           attributes.window_type = GDK_WINDOW_CHILD;
3753           attributes.wclass = GDK_INPUT_OUTPUT;
3754           attributes.x = tree_view->priv->drag_column_x;
3755           attributes.y = 0;
3756           gtk_widget_get_allocation (button, &drag_allocation);
3757           width = attributes.width = drag_allocation.width;
3758           height = attributes.height = drag_allocation.height;
3759           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3760           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3761           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3762           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3763           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3764
3765           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3766           cr = cairo_create (mask_image);
3767
3768           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3769           cairo_stroke (cr);
3770           cairo_destroy (cr);
3771
3772           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3773           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3774                                            mask_region, 0, 0);
3775
3776           cairo_region_destroy (mask_region);
3777           cairo_surface_destroy (mask_image);
3778
3779           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3780         }
3781     }
3782   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3783     {
3784       GtkAllocation button_allocation;
3785       GtkWidget    *button;
3786
3787       width = tree_view->priv->expander_size;
3788
3789       /* Get x, y, width, height of arrow */
3790       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3791       if (reorder->left_column)
3792         {
3793           button = gtk_tree_view_column_get_button (reorder->left_column);
3794           gtk_widget_get_allocation (button, &button_allocation);
3795           x += button_allocation.x + button_allocation.width - width/2;
3796           height = button_allocation.height;
3797         }
3798       else
3799         {
3800           button = gtk_tree_view_column_get_button (reorder->right_column);
3801           gtk_widget_get_allocation (button, &button_allocation);
3802           x += button_allocation.x - width/2;
3803           height = button_allocation.height;
3804         }
3805       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3806       height += tree_view->priv->expander_size;
3807
3808       /* Create the new window */
3809       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3810         {
3811           if (tree_view->priv->drag_highlight_window)
3812             {
3813               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3814                                         NULL);
3815               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3816             }
3817
3818           attributes.window_type = GDK_WINDOW_TEMP;
3819           attributes.wclass = GDK_INPUT_OUTPUT;
3820           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3821           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3822           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3823           attributes.x = x;
3824           attributes.y = y;
3825           attributes.width = width;
3826           attributes.height = height;
3827           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3828                                                                    &attributes, attributes_mask);
3829           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3830
3831           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3832
3833           cr = cairo_create (mask_image);
3834           cairo_move_to (cr, 0, 0);
3835           cairo_line_to (cr, width, 0);
3836           cairo_line_to (cr, width / 2., width / 2);
3837           cairo_move_to (cr, 0, height);
3838           cairo_line_to (cr, width, height);
3839           cairo_line_to (cr, width / 2., height - width / 2.);
3840           cairo_fill (cr);
3841           cairo_destroy (cr);
3842
3843           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3844           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3845                                            mask_region, 0, 0);
3846
3847           cairo_region_destroy (mask_region);
3848           cairo_surface_destroy (mask_image);
3849         }
3850
3851       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3852       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3853     }
3854   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3855            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3856     {
3857       GtkAllocation allocation;
3858       GtkWidget    *button;
3859
3860       width = tree_view->priv->expander_size;
3861
3862       /* Get x, y, width, height of arrow */
3863       width = width/2; /* remember, the arrow only takes half the available width */
3864       gdk_window_get_origin (gtk_widget_get_window (widget),
3865                              &x, &y);
3866       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3867         {
3868           gtk_widget_get_allocation (widget, &allocation);
3869           x += allocation.width - width;
3870         }
3871
3872       if (reorder->left_column)
3873         {
3874           button = gtk_tree_view_column_get_button (reorder->left_column);
3875           gtk_widget_get_allocation (button, &allocation);
3876           height = allocation.height;
3877         }
3878       else
3879         {
3880           button = gtk_tree_view_column_get_button (reorder->right_column);
3881           gtk_widget_get_allocation (button, &allocation);
3882           height = allocation.height;
3883         }
3884
3885       y -= tree_view->priv->expander_size;
3886       height += 2*tree_view->priv->expander_size;
3887
3888       /* Create the new window */
3889       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3890           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3891         {
3892           if (tree_view->priv->drag_highlight_window)
3893             {
3894               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3895                                         NULL);
3896               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3897             }
3898
3899           attributes.window_type = GDK_WINDOW_TEMP;
3900           attributes.wclass = GDK_INPUT_OUTPUT;
3901           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3902           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3903           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3904           attributes.x = x;
3905           attributes.y = y;
3906           attributes.width = width;
3907           attributes.height = height;
3908           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3909           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3910
3911           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3912
3913           cr = cairo_create (mask_image);
3914           /* mirror if we're on the left */
3915           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3916             {
3917               cairo_translate (cr, width, 0);
3918               cairo_scale (cr, -1, 1);
3919             }
3920           cairo_move_to (cr, 0, 0);
3921           cairo_line_to (cr, width, width);
3922           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3923           cairo_move_to (cr, 0, height);
3924           cairo_line_to (cr, width, height - width);
3925           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3926           cairo_fill (cr);
3927           cairo_destroy (cr);
3928
3929           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3930           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3931                                            mask_region, 0, 0);
3932
3933           cairo_region_destroy (mask_region);
3934           cairo_surface_destroy (mask_image);
3935         }
3936
3937       tree_view->priv->drag_column_window_state = arrow_type;
3938       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3939    }
3940   else
3941     {
3942       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3943       gdk_window_hide (tree_view->priv->drag_highlight_window);
3944       return;
3945     }
3946
3947   gdk_window_show (tree_view->priv->drag_highlight_window);
3948   gdk_window_raise (tree_view->priv->drag_highlight_window);
3949 }
3950
3951 static gboolean
3952 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3953                                     GdkEventMotion *event)
3954 {
3955   gint x;
3956   gint new_width;
3957   GtkTreeViewColumn *column;
3958   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3959
3960   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3961
3962   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3963     gdk_window_get_device_position (gtk_widget_get_window (widget),
3964                                     gdk_event_get_device ((GdkEvent *) event),
3965                                     &x, NULL, NULL);
3966   else
3967     x = event->x;
3968
3969   if (tree_view->priv->hadjustment)
3970     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3971
3972   new_width = gtk_tree_view_new_column_width (tree_view,
3973                                               tree_view->priv->drag_pos, &x);
3974   if (x != tree_view->priv->x_drag &&
3975       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3976     {
3977       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3978
3979       if (gtk_tree_view_column_get_expand (column))
3980         new_width -= tree_view->priv->last_extra_space_per_column;
3981
3982       _gtk_tree_view_column_set_resized_width (column, new_width);
3983
3984
3985       gtk_widget_queue_resize (widget);
3986     }
3987
3988   return FALSE;
3989 }
3990
3991
3992 static void
3993 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3994                                       GdkEvent    *event)
3995 {
3996   GtkTreeViewColumnReorder *reorder = NULL;
3997   GList *list;
3998   gint mouse_x;
3999
4000   gdk_window_get_device_position (tree_view->priv->header_window,
4001                                   gdk_event_get_device (event),
4002                                   &mouse_x, NULL, NULL);
4003   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4004     {
4005       reorder = (GtkTreeViewColumnReorder *) list->data;
4006       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4007         break;
4008       reorder = NULL;
4009     }
4010
4011   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4012       return;*/
4013
4014   tree_view->priv->cur_reorder = reorder;
4015   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4016 }
4017
4018 static void
4019 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4020 {
4021   GdkRectangle visible_rect;
4022   gint y;
4023   gint offset;
4024
4025   gdk_window_get_device_position (tree_view->priv->bin_window,
4026                                   gdk_device_manager_get_client_pointer (
4027                                     gdk_display_get_device_manager (
4028                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4029                                   NULL, &y, NULL);
4030   y += tree_view->priv->dy;
4031
4032   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4033
4034   /* see if we are near the edge. */
4035   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4036   if (offset > 0)
4037     {
4038       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4039       if (offset < 0)
4040         return;
4041     }
4042
4043   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4044                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4045 }
4046
4047 static gboolean
4048 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4049                                      GdkEvent    *event)
4050 {
4051   GdkRectangle visible_rect;
4052   gint x;
4053   gint offset;
4054
4055   gdk_window_get_device_position (tree_view->priv->bin_window,
4056                                   gdk_event_get_device (event),
4057                                   &x, NULL, NULL);
4058
4059   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4060
4061   /* See if we are near the edge. */
4062   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4063   if (offset > 0)
4064     {
4065       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4066       if (offset < 0)
4067         return TRUE;
4068     }
4069   offset = offset/3;
4070
4071   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4072                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4073
4074   return TRUE;
4075
4076 }
4077
4078 static gboolean
4079 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4080                                   GdkEventMotion *event)
4081 {
4082   GtkAllocation allocation, button_allocation;
4083   GtkTreeView *tree_view = (GtkTreeView *) widget;
4084   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4085   GtkWidget *button;
4086   gint x, y;
4087
4088   /* Sanity Check */
4089   if ((column == NULL) ||
4090       (event->window != tree_view->priv->drag_window))
4091     return FALSE;
4092
4093   button = gtk_tree_view_column_get_button (column);
4094
4095   /* Handle moving the header */
4096   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4097   gtk_widget_get_allocation (widget, &allocation);
4098   gtk_widget_get_allocation (button, &button_allocation);
4099   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4100              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4101   gdk_window_move (tree_view->priv->drag_window, x, y);
4102
4103   /* autoscroll, if needed */
4104   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4105   /* Update the current reorder position and arrow; */
4106   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4107
4108   return TRUE;
4109 }
4110
4111 static void
4112 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4113 {
4114   remove_scroll_timeout (tree_view);
4115   gtk_grab_remove (GTK_WIDGET (tree_view));
4116
4117   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4118     {
4119       GtkTreePath *tmp_path;
4120
4121       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4122
4123       /* The anchor path should be set to the start path */
4124       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4125                                                  tree_view->priv->rubber_band_start_node);
4126
4127       if (tree_view->priv->anchor)
4128         gtk_tree_row_reference_free (tree_view->priv->anchor);
4129
4130       tree_view->priv->anchor =
4131         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4132                                           tree_view->priv->model,
4133                                           tmp_path);
4134
4135       gtk_tree_path_free (tmp_path);
4136
4137       /* ... and the cursor to the end path */
4138       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4139                                                  tree_view->priv->rubber_band_end_node);
4140       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4141       gtk_tree_path_free (tmp_path);
4142
4143       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4144     }
4145
4146   /* Clear status variables */
4147   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4148   tree_view->priv->rubber_band_extend = FALSE;
4149   tree_view->priv->rubber_band_modify = FALSE;
4150
4151   tree_view->priv->rubber_band_start_node = NULL;
4152   tree_view->priv->rubber_band_start_tree = NULL;
4153   tree_view->priv->rubber_band_end_node = NULL;
4154   tree_view->priv->rubber_band_end_tree = NULL;
4155 }
4156
4157 static void
4158 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4159                                                  GtkRBTree   *start_tree,
4160                                                  GtkRBNode   *start_node,
4161                                                  GtkRBTree   *end_tree,
4162                                                  GtkRBNode   *end_node,
4163                                                  gboolean     select,
4164                                                  gboolean     skip_start,
4165                                                  gboolean     skip_end)
4166 {
4167   if (start_node == end_node)
4168     return;
4169
4170   /* We skip the first node and jump inside the loop */
4171   if (skip_start)
4172     goto skip_first;
4173
4174   do
4175     {
4176       /* Small optimization by assuming insensitive nodes are never
4177        * selected.
4178        */
4179       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4180         {
4181           GtkTreePath *path;
4182           gboolean selectable;
4183
4184           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4185           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4186           gtk_tree_path_free (path);
4187
4188           if (!selectable)
4189             goto node_not_selectable;
4190         }
4191
4192       if (select)
4193         {
4194           if (tree_view->priv->rubber_band_extend)
4195             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4196           else if (tree_view->priv->rubber_band_modify)
4197             {
4198               /* Toggle the selection state */
4199               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4200                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4201               else
4202                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4203             }
4204           else
4205             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4206         }
4207       else
4208         {
4209           /* Mirror the above */
4210           if (tree_view->priv->rubber_band_extend)
4211             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4212           else if (tree_view->priv->rubber_band_modify)
4213             {
4214               /* Toggle the selection state */
4215               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4216                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4217               else
4218                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4219             }
4220           else
4221             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4222         }
4223
4224       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4225
4226 node_not_selectable:
4227       if (start_node == end_node)
4228         break;
4229
4230 skip_first:
4231
4232       if (start_node->children)
4233         {
4234           start_tree = start_node->children;
4235           start_node = _gtk_rbtree_first (start_tree);
4236         }
4237       else
4238         {
4239           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4240
4241           if (!start_tree)
4242             /* Ran out of tree */
4243             break;
4244         }
4245
4246       if (skip_end && start_node == end_node)
4247         break;
4248     }
4249   while (TRUE);
4250 }
4251
4252 static void
4253 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4254 {
4255   GtkRBTree *start_tree, *end_tree;
4256   GtkRBNode *start_node, *end_node;
4257
4258   _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);
4259   _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);
4260
4261   /* Handle the start area first */
4262   if (!tree_view->priv->rubber_band_start_node)
4263     {
4264       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4265                                                        start_tree,
4266                                                        start_node,
4267                                                        end_tree,
4268                                                        end_node,
4269                                                        TRUE,
4270                                                        FALSE,
4271                                                        FALSE);
4272     }
4273   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4274            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4275     {
4276       /* New node is above the old one; selection became bigger */
4277       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4278                                                        start_tree,
4279                                                        start_node,
4280                                                        tree_view->priv->rubber_band_start_tree,
4281                                                        tree_view->priv->rubber_band_start_node,
4282                                                        TRUE,
4283                                                        FALSE,
4284                                                        TRUE);
4285     }
4286   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4287            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4288     {
4289       /* New node is below the old one; selection became smaller */
4290       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4291                                                        tree_view->priv->rubber_band_start_tree,
4292                                                        tree_view->priv->rubber_band_start_node,
4293                                                        start_tree,
4294                                                        start_node,
4295                                                        FALSE,
4296                                                        FALSE,
4297                                                        TRUE);
4298     }
4299
4300   tree_view->priv->rubber_band_start_tree = start_tree;
4301   tree_view->priv->rubber_band_start_node = start_node;
4302
4303   /* Next, handle the end area */
4304   if (!tree_view->priv->rubber_band_end_node)
4305     {
4306       /* In the event this happens, start_node was also NULL; this case is
4307        * handled above.
4308        */
4309     }
4310   else if (!end_node)
4311     {
4312       /* Find the last node in the tree */
4313       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4314                                &end_tree, &end_node);
4315
4316       /* Selection reached end of the tree */
4317       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4318                                                        tree_view->priv->rubber_band_end_tree,
4319                                                        tree_view->priv->rubber_band_end_node,
4320                                                        end_tree,
4321                                                        end_node,
4322                                                        TRUE,
4323                                                        TRUE,
4324                                                        FALSE);
4325     }
4326   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4327            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4328     {
4329       /* New node is below the old one; selection became bigger */
4330       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4331                                                        tree_view->priv->rubber_band_end_tree,
4332                                                        tree_view->priv->rubber_band_end_node,
4333                                                        end_tree,
4334                                                        end_node,
4335                                                        TRUE,
4336                                                        TRUE,
4337                                                        FALSE);
4338     }
4339   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4340            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4341     {
4342       /* New node is above the old one; selection became smaller */
4343       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4344                                                        end_tree,
4345                                                        end_node,
4346                                                        tree_view->priv->rubber_band_end_tree,
4347                                                        tree_view->priv->rubber_band_end_node,
4348                                                        FALSE,
4349                                                        TRUE,
4350                                                        FALSE);
4351     }
4352
4353   tree_view->priv->rubber_band_end_tree = end_tree;
4354   tree_view->priv->rubber_band_end_node = end_node;
4355 }
4356
4357 static void
4358 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4359 {
4360   gint x, y;
4361   GdkRectangle old_area;
4362   GdkRectangle new_area;
4363   GdkRectangle common;
4364   cairo_region_t *invalid_region;
4365
4366   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4367   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4368   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4369   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4370
4371   gdk_window_get_device_position (tree_view->priv->bin_window,
4372                                   gdk_device_manager_get_client_pointer (
4373                                     gdk_display_get_device_manager (
4374                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4375                                   &x, &y, NULL);
4376
4377   x = MAX (x, 0);
4378   y = MAX (y, 0) + tree_view->priv->dy;
4379
4380   new_area.x = MIN (tree_view->priv->press_start_x, x);
4381   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4382   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4383   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4384
4385   invalid_region = cairo_region_create_rectangle (&old_area);
4386   cairo_region_union_rectangle (invalid_region, &new_area);
4387
4388   gdk_rectangle_intersect (&old_area, &new_area, &common);
4389   if (common.width > 2 && common.height > 2)
4390     {
4391       cairo_region_t *common_region;
4392
4393       /* make sure the border is invalidated */
4394       common.x += 1;
4395       common.y += 1;
4396       common.width -= 2;
4397       common.height -= 2;
4398
4399       common_region = cairo_region_create_rectangle (&common);
4400
4401       cairo_region_subtract (invalid_region, common_region);
4402       cairo_region_destroy (common_region);
4403     }
4404
4405   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4406
4407   cairo_region_destroy (invalid_region);
4408
4409   tree_view->priv->rubber_band_x = x;
4410   tree_view->priv->rubber_band_y = y;
4411
4412   gtk_tree_view_update_rubber_band_selection (tree_view);
4413 }
4414
4415 static void
4416 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4417                                  cairo_t      *cr)
4418 {
4419   GdkRectangle rect;
4420   GtkStyleContext *context;
4421
4422   cairo_save (cr);
4423
4424   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4425
4426   gtk_style_context_save (context);
4427   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4428
4429   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4430   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4431   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4432   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4433
4434   gdk_cairo_rectangle (cr, &rect);
4435   cairo_clip (cr);
4436
4437   gtk_render_background (context, cr,
4438                          rect.x, rect.y,
4439                          rect.width, rect.height);
4440   gtk_render_frame (context, cr,
4441                     rect.x, rect.y,
4442                     rect.width, rect.height);
4443
4444   gtk_style_context_restore (context);
4445   cairo_restore (cr);
4446 }
4447
4448 static gboolean
4449 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4450                                  GdkEventMotion *event)
4451 {
4452   GtkTreeView *tree_view;
4453   GtkRBTree *tree;
4454   GtkRBNode *node;
4455   gint new_y;
4456
4457   tree_view = (GtkTreeView *) widget;
4458
4459   if (tree_view->priv->tree == NULL)
4460     return FALSE;
4461
4462   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4463     {
4464       gtk_grab_add (GTK_WIDGET (tree_view));
4465       gtk_tree_view_update_rubber_band (tree_view);
4466
4467       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4468     }
4469   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4470     {
4471       gtk_tree_view_update_rubber_band (tree_view);
4472
4473       add_scroll_timeout (tree_view);
4474     }
4475
4476   /* only check for an initiated drag when a button is pressed */
4477   if (tree_view->priv->pressed_button >= 0
4478       && !tree_view->priv->rubber_band_status)
4479     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4480
4481   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4482   if (new_y < 0)
4483     new_y = 0;
4484
4485   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4486
4487   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4488   if ((tree_view->priv->button_pressed_node != NULL) &&
4489       (tree_view->priv->button_pressed_node != node))
4490     node = NULL;
4491
4492   tree_view->priv->event_last_x = event->x;
4493   tree_view->priv->event_last_y = event->y;
4494
4495   prelight_or_select (tree_view, tree, node, event->x, event->y);
4496
4497   return TRUE;
4498 }
4499
4500 static gboolean
4501 gtk_tree_view_motion (GtkWidget      *widget,
4502                       GdkEventMotion *event)
4503 {
4504   GtkTreeView *tree_view;
4505
4506   tree_view = (GtkTreeView *) widget;
4507
4508   /* Resizing a column */
4509   if (tree_view->priv->in_column_resize)
4510     return gtk_tree_view_motion_resize_column (widget, event);
4511
4512   /* Drag column */
4513   if (tree_view->priv->in_column_drag)
4514     return gtk_tree_view_motion_drag_column (widget, event);
4515
4516   /* Sanity check it */
4517   if (event->window == tree_view->priv->bin_window)
4518     return gtk_tree_view_motion_bin_window (widget, event);
4519
4520   return FALSE;
4521 }
4522
4523 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4524  * the tree is empty.
4525  */
4526 static void
4527 invalidate_empty_focus (GtkTreeView *tree_view)
4528 {
4529   GdkRectangle area;
4530
4531   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4532     return;
4533
4534   area.x = 0;
4535   area.y = 0;
4536   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4537   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4538   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4539 }
4540
4541 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4542  * is empty.
4543  */
4544 static void
4545 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4546 {
4547   GtkWidget *widget = GTK_WIDGET (tree_view);
4548   gint w, h;
4549
4550   if (!gtk_widget_has_visible_focus (widget))
4551     return;
4552
4553   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4554   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4555
4556   if (w > 0 && h > 0)
4557     {
4558       GtkStyleContext *context;
4559       GtkStateFlags state;
4560
4561       context = gtk_widget_get_style_context (widget);
4562       state = gtk_widget_get_state_flags (widget);
4563
4564       gtk_style_context_save (context);
4565       gtk_style_context_set_state (context, state);
4566
4567       gtk_render_focus (context, cr, 1, 1, w, h);
4568
4569       gtk_style_context_restore (context);
4570     }
4571 }
4572
4573 typedef enum {
4574   GTK_TREE_VIEW_GRID_LINE,
4575   GTK_TREE_VIEW_TREE_LINE,
4576   GTK_TREE_VIEW_FOREGROUND_LINE
4577 } GtkTreeViewLineType;
4578
4579 static void
4580 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4581                          cairo_t             *cr,
4582                          GtkTreeViewLineType  type,
4583                          int                  x1,
4584                          int                  y1,
4585                          int                  x2,
4586                          int                  y2)
4587 {
4588   cairo_save (cr);
4589
4590   switch (type)
4591     {
4592     case GTK_TREE_VIEW_TREE_LINE:
4593       cairo_set_source_rgb (cr, 0, 0, 0);
4594       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4595       if (tree_view->priv->tree_line_dashes[0])
4596         cairo_set_dash (cr,
4597                         tree_view->priv->tree_line_dashes,
4598                         2, 0.5);
4599       break;
4600     case GTK_TREE_VIEW_GRID_LINE:
4601       cairo_set_source_rgb (cr, 0, 0, 0);
4602       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4603       if (tree_view->priv->grid_line_dashes[0])
4604         cairo_set_dash (cr,
4605                         tree_view->priv->grid_line_dashes,
4606                         2, 0.5);
4607       break;
4608     default:
4609       g_assert_not_reached ();
4610       /* fall through */
4611     case GTK_TREE_VIEW_FOREGROUND_LINE:
4612       {
4613         GtkStyleContext *context;
4614         GtkStateFlags state;
4615         GdkRGBA color;
4616
4617         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4618         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4619
4620         cairo_set_line_width (cr, 1.0);
4621         gtk_style_context_get_color (context, state, &color);
4622         gdk_cairo_set_source_rgba (cr, &color);
4623       }
4624
4625       break;
4626     }
4627
4628   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4629   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4630   cairo_stroke (cr);
4631
4632   cairo_restore (cr);
4633 }
4634
4635 static void
4636 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4637                                cairo_t        *cr,
4638                                gint            n_visible_columns)
4639 {
4640   GList *list = tree_view->priv->columns;
4641   gint i = 0;
4642   gint current_x = 0;
4643
4644   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4645       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4646     return;
4647
4648   /* Only draw the lines for visible rows and columns */
4649   for (list = tree_view->priv->columns; list; list = list->next, i++)
4650     {
4651       GtkTreeViewColumn *column = list->data;
4652
4653       /* We don't want a line for the last column */
4654       if (i == n_visible_columns - 1)
4655         break;
4656
4657       if (!gtk_tree_view_column_get_visible (column))
4658         continue;
4659
4660       current_x += gtk_tree_view_column_get_width (column);
4661
4662       gtk_tree_view_draw_line (tree_view, cr,
4663                                GTK_TREE_VIEW_GRID_LINE,
4664                                current_x - 1, 0,
4665                                current_x - 1, tree_view->priv->height);
4666     }
4667 }
4668
4669 /* Warning: Very scary function.
4670  * Modify at your own risk
4671  *
4672  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4673  * FIXME: It's not...
4674  */
4675 static gboolean
4676 gtk_tree_view_bin_draw (GtkWidget      *widget,
4677                         cairo_t        *cr)
4678 {
4679   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4680   GtkTreePath *path;
4681   GtkRBTree *tree;
4682   GList *list;
4683   GtkRBNode *node;
4684   GtkRBNode *drag_highlight = NULL;
4685   GtkRBTree *drag_highlight_tree = NULL;
4686   GtkTreeIter iter;
4687   gint new_y;
4688   gint y_offset, cell_offset;
4689   gint max_height;
4690   gint depth;
4691   GdkRectangle background_area;
4692   GdkRectangle cell_area;
4693   GdkRectangle clip;
4694   guint flags;
4695   gint highlight_x;
4696   gint expander_cell_width;
4697   gint bin_window_width;
4698   gint bin_window_height;
4699   GtkTreePath *drag_dest_path;
4700   GList *first_column, *last_column;
4701   gint vertical_separator;
4702   gint horizontal_separator;
4703   gint focus_line_width;
4704   gboolean allow_rules;
4705   gboolean has_can_focus_cell;
4706   gboolean rtl;
4707   gint n_visible_columns;
4708   gint grid_line_width;
4709   gboolean draw_vgrid_lines, draw_hgrid_lines;
4710   GtkStyleContext *context;
4711   GtkStateFlags state;
4712   gboolean parity;
4713
4714   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4715   context = gtk_widget_get_style_context (widget);
4716   state = gtk_widget_get_state_flags (widget);
4717
4718   gtk_widget_style_get (widget,
4719                         "horizontal-separator", &horizontal_separator,
4720                         "vertical-separator", &vertical_separator,
4721                         "allow-rules", &allow_rules,
4722                         "focus-line-width", &focus_line_width,
4723                         NULL);
4724
4725   if (tree_view->priv->tree == NULL)
4726     {
4727       draw_empty_focus (tree_view, cr);
4728       return TRUE;
4729     }
4730
4731   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4732   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4733   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4734   cairo_clip (cr);
4735   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4736     return TRUE;
4737
4738   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4739
4740   if (new_y < 0)
4741     new_y = 0;
4742   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4743
4744   if (tree_view->priv->height < bin_window_height)
4745     {
4746       gtk_style_context_save (context);
4747       gtk_style_context_set_state (context, state);
4748       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4749
4750       gtk_render_background (context, cr,
4751                              0, tree_view->priv->height,
4752                              bin_window_width,
4753                              bin_window_height - tree_view->priv->height);
4754
4755       gtk_style_context_restore (context);
4756     }
4757
4758   if (node == NULL)
4759     return TRUE;
4760
4761   /* find the path for the node */
4762   path = _gtk_tree_path_new_from_rbtree (tree, node);
4763   gtk_tree_model_get_iter (tree_view->priv->model,
4764                            &iter,
4765                            path);
4766   depth = gtk_tree_path_get_depth (path);
4767   gtk_tree_path_free (path);
4768
4769   drag_dest_path = NULL;
4770
4771   if (tree_view->priv->drag_dest_row)
4772     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4773
4774   if (drag_dest_path)
4775     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4776                               &drag_highlight_tree, &drag_highlight);
4777
4778   draw_vgrid_lines =
4779     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4780     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4781   draw_hgrid_lines =
4782     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4783     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4784
4785   if (draw_vgrid_lines || draw_hgrid_lines)
4786     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4787
4788   n_visible_columns = 0;
4789   for (list = tree_view->priv->columns; list; list = list->next)
4790     {
4791       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4792         continue;
4793       n_visible_columns ++;
4794     }
4795
4796   /* Find the last column */
4797   for (last_column = g_list_last (tree_view->priv->columns);
4798        last_column &&
4799        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4800        last_column = last_column->prev)
4801     ;
4802
4803   /* and the first */
4804   for (first_column = g_list_first (tree_view->priv->columns);
4805        first_column &&
4806        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4807        first_column = first_column->next)
4808     ;
4809
4810   /* Actually process the expose event.  To do this, we want to
4811    * start at the first node of the event, and walk the tree in
4812    * order, drawing each successive node.
4813    */
4814
4815   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4816
4817   do
4818     {
4819       gboolean is_separator = FALSE;
4820       gboolean is_first = FALSE;
4821       gboolean is_last = FALSE;
4822       gint n_col = 0;
4823
4824       parity = !parity;
4825       is_separator = row_is_separator (tree_view, &iter, NULL);
4826
4827       max_height = gtk_tree_view_get_row_height (tree_view, node);
4828
4829       cell_offset = 0;
4830       highlight_x = 0; /* should match x coord of first cell */
4831       expander_cell_width = 0;
4832
4833       background_area.y = y_offset + clip.y;
4834       background_area.height = max_height;
4835
4836       flags = 0;
4837
4838       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4839         flags |= GTK_CELL_RENDERER_PRELIT;
4840
4841       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4842         flags |= GTK_CELL_RENDERER_SELECTED;
4843
4844       /* we *need* to set cell data on all cells before the call
4845        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4846        * return a correct value.
4847        */
4848       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4849            list;
4850            list = (rtl ? list->prev : list->next))
4851         {
4852           GtkTreeViewColumn *column = list->data;
4853           gtk_tree_view_column_cell_set_cell_data (column,
4854                                                    tree_view->priv->model,
4855                                                    &iter,
4856                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4857                                                    node->children?TRUE:FALSE);
4858         }
4859
4860       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
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           GtkRegionFlags row_flags = 0, column_flags = 0;
4868           GtkStateFlags state = 0;
4869           gint width;
4870           gboolean draw_focus;
4871
4872           if (!gtk_tree_view_column_get_visible (column))
4873             continue;
4874
4875           n_col++;
4876           width = gtk_tree_view_column_get_width (column);
4877
4878           if (cell_offset > clip.x + clip.width ||
4879               cell_offset + width < clip.x)
4880             {
4881               cell_offset += width;
4882               continue;
4883             }
4884
4885           if (gtk_tree_view_column_get_sort_indicator (column))
4886             flags |= GTK_CELL_RENDERER_SORTED;
4887           else
4888             flags &= ~GTK_CELL_RENDERER_SORTED;
4889
4890           if (tree_view->priv->cursor_node == node)
4891             flags |= GTK_CELL_RENDERER_FOCUSED;
4892           else
4893             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4894
4895           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
4896             flags |= GTK_CELL_RENDERER_EXPANDABLE;
4897           else
4898             flags &= ~GTK_CELL_RENDERER_EXPANDABLE;
4899
4900           if (node->children)
4901             flags |= GTK_CELL_RENDERER_EXPANDED;
4902           else
4903             flags &= ~GTK_CELL_RENDERER_EXPANDED;
4904
4905           background_area.x = cell_offset;
4906           background_area.width = width;
4907
4908           cell_area = background_area;
4909           cell_area.y += vertical_separator / 2;
4910           cell_area.x += horizontal_separator / 2;
4911           cell_area.height -= vertical_separator;
4912           cell_area.width -= horizontal_separator;
4913
4914           if (draw_vgrid_lines)
4915             {
4916               if (list == first_column)
4917                 {
4918                   cell_area.width -= grid_line_width / 2;
4919                 }
4920               else if (list == last_column)
4921                 {
4922                   cell_area.x += grid_line_width / 2;
4923                   cell_area.width -= grid_line_width / 2;
4924                 }
4925               else
4926                 {
4927                   cell_area.x += grid_line_width / 2;
4928                   cell_area.width -= grid_line_width;
4929                 }
4930             }
4931
4932           if (draw_hgrid_lines)
4933             {
4934               cell_area.y += grid_line_width / 2;
4935               cell_area.height -= grid_line_width;
4936             }
4937
4938           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4939             {
4940               cell_offset += gtk_tree_view_column_get_width (column);
4941               continue;
4942             }
4943
4944           gtk_tree_view_column_cell_set_cell_data (column,
4945                                                    tree_view->priv->model,
4946                                                    &iter,
4947                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4948                                                    node->children?TRUE:FALSE);
4949
4950           /* Select the detail for drawing the cell.  relevant
4951            * factors are parity, sortedness, and whether to
4952            * display rules.
4953            */
4954           if (allow_rules && tree_view->priv->has_rules)
4955             {
4956               if (parity)
4957                 row_flags |= GTK_REGION_ODD;
4958               else
4959                 row_flags |= GTK_REGION_EVEN;
4960             }
4961
4962           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4963               n_visible_columns >= 3)
4964             column_flags |= GTK_REGION_SORTED;
4965
4966           is_first = (rtl ? !list->next : !list->prev);
4967           is_last = (rtl ? !list->prev : !list->next);
4968
4969           if (is_first)
4970             column_flags |= GTK_REGION_FIRST;
4971
4972           if (is_last)
4973             column_flags |= GTK_REGION_LAST;
4974
4975           if ((n_col % 2) == 0)
4976             column_flags |= GTK_REGION_EVEN;
4977           else
4978             column_flags |= GTK_REGION_ODD;
4979
4980           gtk_style_context_save (context);
4981
4982           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4983           gtk_style_context_set_state (context, state);
4984
4985           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4986           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4987           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4988
4989           if (node == tree_view->priv->cursor_node && has_can_focus_cell
4990               && ((column == tree_view->priv->focus_column
4991                    && tree_view->priv->draw_keyfocus &&
4992                    gtk_widget_has_visible_focus (widget))
4993                   || (column == tree_view->priv->edited_column)))
4994             draw_focus = TRUE;
4995           else
4996             draw_focus = FALSE;
4997
4998           /* Draw background */
4999           gtk_render_background (context, cr,
5000                                  background_area.x,
5001                                  background_area.y,
5002                                  background_area.width,
5003                                  background_area.height);
5004
5005           /* Draw frame */
5006           gtk_render_frame (context, cr,
5007                             background_area.x,
5008                             background_area.y,
5009                             background_area.width,
5010                             background_area.height);
5011
5012           if (gtk_tree_view_is_expander_column (tree_view, column))
5013             {
5014               if (!rtl)
5015                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5016               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5017
5018               if (gtk_tree_view_draw_expanders (tree_view))
5019                 {
5020                   if (!rtl)
5021                     cell_area.x += depth * tree_view->priv->expander_size;
5022                   cell_area.width -= depth * tree_view->priv->expander_size;
5023                 }
5024
5025               /* If we have an expander column, the highlight underline
5026                * starts with that column, so that it indicates which
5027                * level of the tree we're dropping at.
5028                */
5029               highlight_x = cell_area.x;
5030               expander_cell_width = cell_area.width;
5031
5032               if (is_separator)
5033                 {
5034                   gtk_style_context_save (context);
5035                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5036
5037                   gtk_render_line (context, cr,
5038                                    cell_area.x,
5039                                    cell_area.y + cell_area.height / 2,
5040                                    cell_area.x + cell_area.width,
5041                                    cell_area.y + cell_area.height / 2);
5042
5043                   gtk_style_context_restore (context);
5044                 }
5045               else
5046                 {
5047                   _gtk_tree_view_column_cell_render (column,
5048                                                      cr,
5049                                                      &background_area,
5050                                                      &cell_area,
5051                                                      flags,
5052                                                      draw_focus);
5053                 }
5054
5055               if (gtk_tree_view_draw_expanders (tree_view)
5056                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5057                 {
5058                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5059                                             cr,
5060                                             tree,
5061                                             node);
5062                 }
5063             }
5064           else
5065             {
5066               if (is_separator)
5067                 {
5068                   gtk_style_context_save (context);
5069                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5070
5071                   gtk_render_line (context, cr,
5072                                    cell_area.x,
5073                                    cell_area.y + cell_area.height / 2,
5074                                    cell_area.x + cell_area.width,
5075                                    cell_area.y + cell_area.height / 2);
5076
5077                   gtk_style_context_restore (context);
5078                 }
5079               else
5080                 _gtk_tree_view_column_cell_render (column,
5081                                                    cr,
5082                                                    &background_area,
5083                                                    &cell_area,
5084                                                    flags,
5085                                                    draw_focus);
5086             }
5087
5088           if (draw_hgrid_lines)
5089             {
5090               if (background_area.y > 0)
5091                 gtk_tree_view_draw_line (tree_view, cr,
5092                                          GTK_TREE_VIEW_GRID_LINE,
5093                                          background_area.x, background_area.y,
5094                                          background_area.x + background_area.width,
5095                                          background_area.y);
5096
5097               if (y_offset + max_height >= clip.height)
5098                 gtk_tree_view_draw_line (tree_view, cr,
5099                                          GTK_TREE_VIEW_GRID_LINE,
5100                                          background_area.x, background_area.y + max_height,
5101                                          background_area.x + background_area.width,
5102                                          background_area.y + max_height);
5103             }
5104
5105           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5106               tree_view->priv->tree_lines_enabled)
5107             {
5108               gint x = background_area.x;
5109               gint mult = rtl ? -1 : 1;
5110               gint y0 = background_area.y;
5111               gint y1 = background_area.y + background_area.height/2;
5112               gint y2 = background_area.y + background_area.height;
5113
5114               if (rtl)
5115                 x += background_area.width - 1;
5116
5117               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5118                   && depth > 1)
5119                 {
5120                   gtk_tree_view_draw_line (tree_view, cr,
5121                                            GTK_TREE_VIEW_TREE_LINE,
5122                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5123                                            y1,
5124                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5125                                            y1);
5126                 }
5127               else if (depth > 1)
5128                 {
5129                   gtk_tree_view_draw_line (tree_view, cr,
5130                                            GTK_TREE_VIEW_TREE_LINE,
5131                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5132                                            y1,
5133                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5134                                            y1);
5135                 }
5136
5137               if (depth > 1)
5138                 {
5139                   gint i;
5140                   GtkRBNode *tmp_node;
5141                   GtkRBTree *tmp_tree;
5142
5143                   if (!_gtk_rbtree_next (tree, node))
5144                     gtk_tree_view_draw_line (tree_view, cr,
5145                                              GTK_TREE_VIEW_TREE_LINE,
5146                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5147                                              y0,
5148                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5149                                              y1);
5150                   else
5151                     gtk_tree_view_draw_line (tree_view, cr,
5152                                              GTK_TREE_VIEW_TREE_LINE,
5153                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5154                                              y0,
5155                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5156                                              y2);
5157
5158                   tmp_node = tree->parent_node;
5159                   tmp_tree = tree->parent_tree;
5160
5161                   for (i = depth - 2; i > 0; i--)
5162                     {
5163                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5164                         gtk_tree_view_draw_line (tree_view, cr,
5165                                                  GTK_TREE_VIEW_TREE_LINE,
5166                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5167                                                  y0,
5168                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5169                                                  y2);
5170
5171                       tmp_node = tmp_tree->parent_node;
5172                       tmp_tree = tmp_tree->parent_tree;
5173                     }
5174                 }
5175             }
5176
5177           gtk_style_context_restore (context);
5178           cell_offset += gtk_tree_view_column_get_width (column);
5179         }
5180
5181       if (node == drag_highlight)
5182         {
5183           /* Draw indicator for the drop
5184            */
5185           gint highlight_y = -1;
5186           GtkRBTree *tree = NULL;
5187           GtkRBNode *node = NULL;
5188
5189           switch (tree_view->priv->drag_dest_pos)
5190             {
5191             case GTK_TREE_VIEW_DROP_BEFORE:
5192               highlight_y = background_area.y - 1;
5193               if (highlight_y < 0)
5194                       highlight_y = 0;
5195               break;
5196
5197             case GTK_TREE_VIEW_DROP_AFTER:
5198               highlight_y = background_area.y + background_area.height - 1;
5199               break;
5200
5201             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5202             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5203               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5204
5205               if (tree == NULL)
5206                 break;
5207
5208               gtk_render_focus (context, cr,
5209                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5210                                    - focus_line_width / 2,
5211                                 gdk_window_get_width (tree_view->priv->bin_window),
5212                                 gtk_tree_view_get_row_height (tree_view, node)
5213                                    - focus_line_width + 1);
5214               break;
5215             }
5216
5217           if (highlight_y >= 0)
5218             {
5219               gtk_tree_view_draw_line (tree_view, cr,
5220                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5221                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5222                                        highlight_y,
5223                                        rtl ? 0 : bin_window_width,
5224                                        highlight_y);
5225             }
5226         }
5227
5228       /* draw the big row-spanning focus rectangle, if needed */
5229       if (!has_can_focus_cell && node == tree_view->priv->cursor_node &&
5230           tree_view->priv->draw_keyfocus &&
5231           gtk_widget_has_visible_focus (widget))
5232         {
5233           gint tmp_y, tmp_height;
5234           GtkStateFlags focus_rect_state = 0;
5235
5236           gtk_style_context_save (context);
5237
5238           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5239           gtk_style_context_set_state (context, focus_rect_state);
5240
5241           if (draw_hgrid_lines)
5242             {
5243               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5244               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5245             }
5246           else
5247             {
5248               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5249               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5250             }
5251
5252           gtk_render_focus (context, cr,
5253                             0, tmp_y,
5254                             gdk_window_get_width (tree_view->priv->bin_window),
5255                             tmp_height);
5256
5257           gtk_style_context_restore (context);
5258         }
5259
5260       y_offset += max_height;
5261       if (node->children)
5262         {
5263           GtkTreeIter parent = iter;
5264           gboolean has_child;
5265
5266           tree = node->children;
5267           node = _gtk_rbtree_first (tree);
5268
5269           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5270                                                     &iter,
5271                                                     &parent);
5272           depth++;
5273
5274           /* Sanity Check! */
5275           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5276         }
5277       else
5278         {
5279           gboolean done = FALSE;
5280
5281           do
5282             {
5283               node = _gtk_rbtree_next (tree, node);
5284               if (node != NULL)
5285                 {
5286                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5287                   done = TRUE;
5288
5289                   /* Sanity Check! */
5290                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5291                 }
5292               else
5293                 {
5294                   GtkTreeIter parent_iter = iter;
5295                   gboolean has_parent;
5296
5297                   node = tree->parent_node;
5298                   tree = tree->parent_tree;
5299                   if (tree == NULL)
5300                     /* we should go to done to free some memory */
5301                     goto done;
5302                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5303                                                            &iter,
5304                                                            &parent_iter);
5305                   depth--;
5306
5307                   /* Sanity check */
5308                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5309                 }
5310             }
5311           while (!done);
5312         }
5313     }
5314   while (y_offset < clip.height);
5315
5316 done:
5317   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5318
5319   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5320     gtk_tree_view_paint_rubber_band (tree_view, cr);
5321
5322   if (drag_dest_path)
5323     gtk_tree_path_free (drag_dest_path);
5324
5325   return FALSE;
5326 }
5327
5328 static gboolean
5329 gtk_tree_view_draw (GtkWidget *widget,
5330                     cairo_t   *cr)
5331 {
5332   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5333   GtkWidget   *button;
5334
5335   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5336     {
5337       GtkStyleContext *context;
5338       GList *tmp_list;
5339
5340       context = gtk_widget_get_style_context (widget);
5341
5342       cairo_save (cr);
5343
5344       gtk_style_context_save (context);
5345       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5346
5347       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5348
5349       gtk_tree_view_bin_draw (widget, cr);
5350
5351       gtk_style_context_restore (context);
5352       cairo_restore (cr);
5353
5354       /* We can't just chain up to Container::draw as it will try to send the
5355        * event to the headers, so we handle propagating it to our children
5356        * (eg. widgets being edited) ourselves.
5357        */
5358       tmp_list = tree_view->priv->children;
5359       while (tmp_list)
5360         {
5361           GtkTreeViewChild *child = tmp_list->data;
5362           tmp_list = tmp_list->next;
5363
5364           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5365         }
5366     }
5367
5368   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5369     {
5370       GList *list;
5371
5372       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5373         {
5374           GtkTreeViewColumn *column = list->data;
5375
5376           if (column == tree_view->priv->drag_column)
5377             continue;
5378
5379           if (gtk_tree_view_column_get_visible (column))
5380             {
5381               button = gtk_tree_view_column_get_button (column);
5382               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5383                                             button, cr);
5384             }
5385         }
5386     }
5387
5388   if (tree_view->priv->drag_window &&
5389       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5390     {
5391       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5392       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5393                                     button, cr);
5394     }
5395
5396   return FALSE;
5397 }
5398
5399 enum
5400 {
5401   DROP_HOME,
5402   DROP_RIGHT,
5403   DROP_LEFT,
5404   DROP_END
5405 };
5406
5407 /* returns 0x1 when no column has been found -- yes it's hackish */
5408 static GtkTreeViewColumn *
5409 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5410                                GtkTreeViewColumn *column,
5411                                gint               drop_position)
5412 {
5413   GtkTreeViewColumn *left_column = NULL;
5414   GtkTreeViewColumn *cur_column = NULL;
5415   GList *tmp_list;
5416
5417   if (!gtk_tree_view_column_get_reorderable (column))
5418     return (GtkTreeViewColumn *)0x1;
5419
5420   switch (drop_position)
5421     {
5422       case DROP_HOME:
5423         /* find first column where we can drop */
5424         tmp_list = tree_view->priv->columns;
5425         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5426           return (GtkTreeViewColumn *)0x1;
5427
5428         while (tmp_list)
5429           {
5430             g_assert (tmp_list);
5431
5432             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5433             tmp_list = tmp_list->next;
5434
5435             if (left_column &&
5436                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5437               continue;
5438
5439             if (!tree_view->priv->column_drop_func)
5440               return left_column;
5441
5442             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5443               {
5444                 left_column = cur_column;
5445                 continue;
5446               }
5447
5448             return left_column;
5449           }
5450
5451         if (!tree_view->priv->column_drop_func)
5452           return left_column;
5453
5454         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5455           return left_column;
5456         else
5457           return (GtkTreeViewColumn *)0x1;
5458         break;
5459
5460       case DROP_RIGHT:
5461         /* find first column after column where we can drop */
5462         tmp_list = tree_view->priv->columns;
5463
5464         for (; tmp_list; tmp_list = tmp_list->next)
5465           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5466             break;
5467
5468         if (!tmp_list || !tmp_list->next)
5469           return (GtkTreeViewColumn *)0x1;
5470
5471         tmp_list = tmp_list->next;
5472         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5473         tmp_list = tmp_list->next;
5474
5475         while (tmp_list)
5476           {
5477             g_assert (tmp_list);
5478
5479             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5480             tmp_list = tmp_list->next;
5481
5482             if (left_column &&
5483                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5484               {
5485                 left_column = cur_column;
5486                 if (tmp_list)
5487                   tmp_list = tmp_list->next;
5488                 continue;
5489               }
5490
5491             if (!tree_view->priv->column_drop_func)
5492               return left_column;
5493
5494             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5495               {
5496                 left_column = cur_column;
5497                 continue;
5498               }
5499
5500             return left_column;
5501           }
5502
5503         if (!tree_view->priv->column_drop_func)
5504           return left_column;
5505
5506         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5507           return left_column;
5508         else
5509           return (GtkTreeViewColumn *)0x1;
5510         break;
5511
5512       case DROP_LEFT:
5513         /* find first column before column where we can drop */
5514         tmp_list = tree_view->priv->columns;
5515
5516         for (; tmp_list; tmp_list = tmp_list->next)
5517           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5518             break;
5519
5520         if (!tmp_list || !tmp_list->prev)
5521           return (GtkTreeViewColumn *)0x1;
5522
5523         tmp_list = tmp_list->prev;
5524         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5525         tmp_list = tmp_list->prev;
5526
5527         while (tmp_list)
5528           {
5529             g_assert (tmp_list);
5530
5531             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5532
5533             if (left_column &&
5534                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5535               {
5536                 /*if (!tmp_list->prev)
5537                   return (GtkTreeViewColumn *)0x1;
5538                   */
5539 /*
5540                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5541                 tmp_list = tmp_list->prev->prev;
5542                 continue;*/
5543
5544                 cur_column = left_column;
5545                 if (tmp_list)
5546                   tmp_list = tmp_list->prev;
5547                 continue;
5548               }
5549
5550             if (!tree_view->priv->column_drop_func)
5551               return left_column;
5552
5553             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5554               return left_column;
5555
5556             cur_column = left_column;
5557             tmp_list = tmp_list->prev;
5558           }
5559
5560         if (!tree_view->priv->column_drop_func)
5561           return NULL;
5562
5563         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5564           return NULL;
5565         else
5566           return (GtkTreeViewColumn *)0x1;
5567         break;
5568
5569       case DROP_END:
5570         /* same as DROP_HOME case, but doing it backwards */
5571         tmp_list = g_list_last (tree_view->priv->columns);
5572         cur_column = NULL;
5573
5574         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5575           return (GtkTreeViewColumn *)0x1;
5576
5577         while (tmp_list)
5578           {
5579             g_assert (tmp_list);
5580
5581             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5582
5583             if (left_column &&
5584                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5585               {
5586                 cur_column = left_column;
5587                 tmp_list = tmp_list->prev;
5588               }
5589
5590             if (!tree_view->priv->column_drop_func)
5591               return left_column;
5592
5593             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5594               return left_column;
5595
5596             cur_column = left_column;
5597             tmp_list = tmp_list->prev;
5598           }
5599
5600         if (!tree_view->priv->column_drop_func)
5601           return NULL;
5602
5603         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5604           return NULL;
5605         else
5606           return (GtkTreeViewColumn *)0x1;
5607         break;
5608     }
5609
5610   return (GtkTreeViewColumn *)0x1;
5611 }
5612
5613 static gboolean
5614 gtk_tree_view_key_press (GtkWidget   *widget,
5615                          GdkEventKey *event)
5616 {
5617   GtkTreeView *tree_view = (GtkTreeView *) widget;
5618   GtkWidget   *button;
5619
5620   if (tree_view->priv->rubber_band_status)
5621     {
5622       if (event->keyval == GDK_KEY_Escape)
5623         gtk_tree_view_stop_rubber_band (tree_view);
5624
5625       return TRUE;
5626     }
5627
5628   if (tree_view->priv->in_column_drag)
5629     {
5630       if (event->keyval == GDK_KEY_Escape)
5631         {
5632           tree_view->priv->cur_reorder = NULL;
5633           gtk_tree_view_button_release_drag_column (widget, NULL);
5634         }
5635       return TRUE;
5636     }
5637
5638   if (tree_view->priv->headers_visible)
5639     {
5640       GList *focus_column;
5641       gboolean rtl;
5642
5643       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5644
5645       for (focus_column = tree_view->priv->columns;
5646            focus_column;
5647            focus_column = focus_column->next)
5648         {
5649           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5650
5651           button = gtk_tree_view_column_get_button (column);
5652           if (gtk_widget_has_focus (button))
5653             break;
5654         }
5655
5656       if (focus_column &&
5657           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5658           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5659            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5660         {
5661           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5662           gint max_width, min_width;
5663
5664           if (!gtk_tree_view_column_get_resizable (column))
5665             {
5666               gtk_widget_error_bell (widget);
5667               return TRUE;
5668             }
5669
5670           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5671               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5672             {
5673               GtkRequisition button_req;
5674               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5675               gint new_width;
5676
5677               button = gtk_tree_view_column_get_button (column);
5678
5679               gtk_widget_get_preferred_size (button, &button_req, NULL);
5680
5681               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5682               new_width -= 2;
5683               if (new_width < 0)
5684                 new_width = 0;
5685
5686               _gtk_tree_view_column_set_resized_width (column, new_width);
5687
5688               min_width = gtk_tree_view_column_get_min_width (column);
5689               if (min_width == -1)
5690                 new_width = MAX (button_req.width, new_width);
5691               else
5692                 {
5693                   new_width = MAX (min_width, new_width);
5694                 }
5695
5696               max_width = gtk_tree_view_column_get_max_width (column);
5697               if (max_width != -1)
5698                 new_width = MIN (new_width, max_width);
5699
5700               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5701
5702               if (new_width != old_width)
5703                 {
5704                   _gtk_tree_view_column_set_resized_width (column, new_width);
5705                   gtk_widget_queue_resize (widget);
5706                 }
5707               else
5708                 gtk_widget_error_bell (widget);
5709             }
5710           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5711                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5712             {
5713               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5714               gint new_width;
5715
5716               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5717               new_width += 2;
5718
5719               max_width = gtk_tree_view_column_get_max_width (column);
5720               if (max_width != -1)
5721                 new_width = MIN (new_width, max_width);
5722
5723               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5724
5725               if (new_width != old_width)
5726                 {
5727                   _gtk_tree_view_column_set_resized_width (column, new_width);
5728                   gtk_widget_queue_resize (widget);
5729                 }
5730               else
5731                 gtk_widget_error_bell (widget);
5732             }
5733
5734           return TRUE;
5735         }
5736
5737       if (focus_column &&
5738           (event->state & GDK_MOD1_MASK) &&
5739           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5740            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5741            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5742            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5743         {
5744           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5745
5746           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5747               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5748             {
5749               GtkTreeViewColumn *col;
5750               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5751               if (col != (GtkTreeViewColumn *)0x1)
5752                 gtk_tree_view_move_column_after (tree_view, column, col);
5753               else
5754                 gtk_widget_error_bell (widget);
5755             }
5756           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5757                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5758             {
5759               GtkTreeViewColumn *col;
5760               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5761               if (col != (GtkTreeViewColumn *)0x1)
5762                 gtk_tree_view_move_column_after (tree_view, column, col);
5763               else
5764                 gtk_widget_error_bell (widget);
5765             }
5766           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5767             {
5768               GtkTreeViewColumn *col;
5769               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5770               if (col != (GtkTreeViewColumn *)0x1)
5771                 gtk_tree_view_move_column_after (tree_view, column, col);
5772               else
5773                 gtk_widget_error_bell (widget);
5774             }
5775           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5776             {
5777               GtkTreeViewColumn *col;
5778               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
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
5785           return TRUE;
5786         }
5787     }
5788
5789   /* Chain up to the parent class.  It handles the keybindings. */
5790   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5791     return TRUE;
5792
5793   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5794     {
5795       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5796       return FALSE;
5797     }
5798
5799   /* We pass the event to the search_entry.  If its text changes, then we start
5800    * the typeahead find capabilities. */
5801   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5802       && tree_view->priv->enable_search
5803       && !tree_view->priv->search_custom_entry_set)
5804     {
5805       GdkEvent *new_event;
5806       char *old_text;
5807       const char *new_text;
5808       gboolean retval;
5809       GdkScreen *screen;
5810       gboolean text_modified;
5811       gulong popup_menu_id;
5812
5813       gtk_tree_view_ensure_interactive_directory (tree_view);
5814
5815       /* Make a copy of the current text */
5816       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5817       new_event = gdk_event_copy ((GdkEvent *) event);
5818       g_object_unref (((GdkEventKey *) new_event)->window);
5819       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5820       gtk_widget_realize (tree_view->priv->search_window);
5821
5822       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5823                                         "popup-menu", G_CALLBACK (gtk_true),
5824                                         NULL);
5825
5826       /* Move the entry off screen */
5827       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5828       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5829                        gdk_screen_get_width (screen) + 1,
5830                        gdk_screen_get_height (screen) + 1);
5831       gtk_widget_show (tree_view->priv->search_window);
5832
5833       /* Send the event to the window.  If the preedit_changed signal is emitted
5834        * during this event, we will set priv->imcontext_changed  */
5835       tree_view->priv->imcontext_changed = FALSE;
5836       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5837       gdk_event_free (new_event);
5838       gtk_widget_hide (tree_view->priv->search_window);
5839
5840       g_signal_handler_disconnect (tree_view->priv->search_entry,
5841                                    popup_menu_id);
5842
5843       /* We check to make sure that the entry tried to handle the text, and that
5844        * the text has changed.
5845        */
5846       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5847       text_modified = strcmp (old_text, new_text) != 0;
5848       g_free (old_text);
5849       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5850           (retval && text_modified))               /* ...or the text was modified */
5851         {
5852           if (gtk_tree_view_real_start_interactive_search (tree_view,
5853                                                            gdk_event_get_device ((GdkEvent *) event),
5854                                                            FALSE))
5855             {
5856               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5857               return TRUE;
5858             }
5859           else
5860             {
5861               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5862               return FALSE;
5863             }
5864         }
5865     }
5866
5867   return FALSE;
5868 }
5869
5870 static gboolean
5871 gtk_tree_view_key_release (GtkWidget   *widget,
5872                            GdkEventKey *event)
5873 {
5874   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5875
5876   if (tree_view->priv->rubber_band_status)
5877     return TRUE;
5878
5879   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5880 }
5881
5882 /* FIXME Is this function necessary? Can I get an enter_notify event
5883  * w/o either an expose event or a mouse motion event?
5884  */
5885 static gboolean
5886 gtk_tree_view_enter_notify (GtkWidget        *widget,
5887                             GdkEventCrossing *event)
5888 {
5889   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5890   GtkRBTree *tree;
5891   GtkRBNode *node;
5892   gint new_y;
5893
5894   /* Sanity check it */
5895   if (event->window != tree_view->priv->bin_window)
5896     return FALSE;
5897
5898   if (tree_view->priv->tree == NULL)
5899     return FALSE;
5900
5901   if (event->mode == GDK_CROSSING_GRAB ||
5902       event->mode == GDK_CROSSING_GTK_GRAB ||
5903       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5904       event->mode == GDK_CROSSING_STATE_CHANGED)
5905     return TRUE;
5906
5907   /* find the node internally */
5908   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5909   if (new_y < 0)
5910     new_y = 0;
5911   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5912
5913   tree_view->priv->event_last_x = event->x;
5914   tree_view->priv->event_last_y = event->y;
5915
5916   if ((tree_view->priv->button_pressed_node == NULL) ||
5917       (tree_view->priv->button_pressed_node == node))
5918     prelight_or_select (tree_view, tree, node, event->x, event->y);
5919
5920   return TRUE;
5921 }
5922
5923 static gboolean
5924 gtk_tree_view_leave_notify (GtkWidget        *widget,
5925                             GdkEventCrossing *event)
5926 {
5927   GtkTreeView *tree_view;
5928
5929   if (event->mode == GDK_CROSSING_GRAB ||
5930       event->mode == GDK_CROSSING_GTK_GRAB ||
5931       event->mode == GDK_CROSSING_GTK_UNGRAB)
5932     return TRUE;
5933
5934   tree_view = GTK_TREE_VIEW (widget);
5935
5936   if (tree_view->priv->prelight_node)
5937     _gtk_tree_view_queue_draw_node (tree_view,
5938                                    tree_view->priv->prelight_tree,
5939                                    tree_view->priv->prelight_node,
5940                                    NULL);
5941
5942   tree_view->priv->event_last_x = -10000;
5943   tree_view->priv->event_last_y = -10000;
5944
5945   prelight_or_select (tree_view,
5946                       NULL, NULL,
5947                       -1000, -1000); /* coords not possibly over an arrow */
5948
5949   return TRUE;
5950 }
5951
5952
5953 static gint
5954 gtk_tree_view_focus_out (GtkWidget     *widget,
5955                          GdkEventFocus *event)
5956 {
5957   GtkTreeView *tree_view;
5958
5959   tree_view = GTK_TREE_VIEW (widget);
5960
5961   gtk_widget_queue_draw (widget);
5962
5963   /* destroy interactive search dialog */
5964   if (tree_view->priv->search_window)
5965     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5966                                       gdk_event_get_device ((GdkEvent *) event));
5967
5968   return FALSE;
5969 }
5970
5971
5972 /* Incremental Reflow
5973  */
5974
5975 static void
5976 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5977                                  GtkRBTree   *tree,
5978                                  GtkRBNode   *node)
5979 {
5980   GtkAllocation allocation;
5981   gint y;
5982
5983   y = _gtk_rbtree_node_find_offset (tree, node)
5984     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5985     + gtk_tree_view_get_effective_header_height (tree_view);
5986
5987   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5988   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5989                               0, y,
5990                               allocation.width,
5991                               GTK_RBNODE_GET_HEIGHT (node));
5992 }
5993
5994 static gboolean
5995 node_is_visible (GtkTreeView *tree_view,
5996                  GtkRBTree   *tree,
5997                  GtkRBNode   *node)
5998 {
5999   int y;
6000   int height;
6001
6002   y = _gtk_rbtree_node_find_offset (tree, node);
6003   height = gtk_tree_view_get_row_height (tree_view, node);
6004
6005   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6006       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6007                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6008     return TRUE;
6009
6010   return FALSE;
6011 }
6012
6013 /* Returns TRUE if it updated the size
6014  */
6015 static gboolean
6016 validate_row (GtkTreeView *tree_view,
6017               GtkRBTree   *tree,
6018               GtkRBNode   *node,
6019               GtkTreeIter *iter,
6020               GtkTreePath *path)
6021 {
6022   GtkTreeViewColumn *column;
6023   GList *list, *first_column, *last_column;
6024   gint height = 0;
6025   gint horizontal_separator;
6026   gint vertical_separator;
6027   gint depth = gtk_tree_path_get_depth (path);
6028   gboolean retval = FALSE;
6029   gboolean is_separator = FALSE;
6030   gboolean draw_vgrid_lines, draw_hgrid_lines;
6031   gint focus_pad;
6032   gint grid_line_width;
6033   gboolean wide_separators;
6034   gint separator_height;
6035
6036   /* double check the row needs validating */
6037   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6038       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6039     return FALSE;
6040
6041   is_separator = row_is_separator (tree_view, iter, NULL);
6042
6043   gtk_widget_style_get (GTK_WIDGET (tree_view),
6044                         "focus-padding", &focus_pad,
6045                         "horizontal-separator", &horizontal_separator,
6046                         "vertical-separator", &vertical_separator,
6047                         "grid-line-width", &grid_line_width,
6048                         "wide-separators",  &wide_separators,
6049                         "separator-height", &separator_height,
6050                         NULL);
6051
6052   draw_vgrid_lines =
6053     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6054     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6055   draw_hgrid_lines =
6056     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6057     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6058
6059   for (last_column = g_list_last (tree_view->priv->columns);
6060        last_column &&
6061        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6062        last_column = last_column->prev)
6063     ;
6064
6065   for (first_column = g_list_first (tree_view->priv->columns);
6066        first_column &&
6067        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6068        first_column = first_column->next)
6069     ;
6070
6071   for (list = tree_view->priv->columns; list; list = list->next)
6072     {
6073       gint padding = 0;
6074       gint original_width;
6075       gint new_width;
6076       gint row_height;
6077
6078       column = list->data;
6079
6080       if (!gtk_tree_view_column_get_visible (column))
6081         continue;
6082
6083       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6084           !_gtk_tree_view_column_cell_get_dirty (column))
6085         continue;
6086
6087       original_width = _gtk_tree_view_column_get_requested_width (column);
6088
6089       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6090                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6091                                                node->children?TRUE:FALSE);
6092       gtk_tree_view_column_cell_get_size (column,
6093                                           NULL, NULL, NULL,
6094                                           NULL, &row_height);
6095
6096       if (!is_separator)
6097         {
6098           row_height += vertical_separator;
6099           height = MAX (height, row_height);
6100           height = MAX (height, tree_view->priv->expander_size);
6101         }
6102       else
6103         {
6104           if (wide_separators)
6105             height = separator_height + 2 * focus_pad;
6106           else
6107             height = 2 + 2 * focus_pad;
6108         }
6109
6110       if (gtk_tree_view_is_expander_column (tree_view, column))
6111         {
6112           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6113
6114           if (gtk_tree_view_draw_expanders (tree_view))
6115             padding += depth * tree_view->priv->expander_size;
6116         }
6117       else
6118         padding += horizontal_separator;
6119
6120       if (draw_vgrid_lines)
6121         {
6122           if (list->data == first_column || list->data == last_column)
6123             padding += grid_line_width / 2.0;
6124           else
6125             padding += grid_line_width;
6126         }
6127
6128       /* Update the padding for the column */
6129       _gtk_tree_view_column_push_padding (column, padding);
6130       new_width = _gtk_tree_view_column_get_requested_width (column);
6131
6132       if (new_width > original_width)
6133         retval = TRUE;
6134     }
6135
6136   if (draw_hgrid_lines)
6137     height += grid_line_width;
6138
6139   if (height != GTK_RBNODE_GET_HEIGHT (node))
6140     {
6141       retval = TRUE;
6142       _gtk_rbtree_node_set_height (tree, node, height);
6143     }
6144   _gtk_rbtree_node_mark_valid (tree, node);
6145   tree_view->priv->post_validation_flag = TRUE;
6146
6147   return retval;
6148 }
6149
6150
6151 static void
6152 validate_visible_area (GtkTreeView *tree_view)
6153 {
6154   GtkAllocation allocation;
6155   GtkTreePath *path = NULL;
6156   GtkTreePath *above_path = NULL;
6157   GtkTreeIter iter;
6158   GtkRBTree *tree = NULL;
6159   GtkRBNode *node = NULL;
6160   gboolean need_redraw = FALSE;
6161   gboolean size_changed = FALSE;
6162   gint total_height;
6163   gint area_above = 0;
6164   gint area_below = 0;
6165
6166   if (tree_view->priv->tree == NULL)
6167     return;
6168
6169   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6170       tree_view->priv->scroll_to_path == NULL)
6171     return;
6172
6173   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6174   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6175
6176   if (total_height == 0)
6177     return;
6178
6179   /* First, we check to see if we need to scroll anywhere
6180    */
6181   if (tree_view->priv->scroll_to_path)
6182     {
6183       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6184       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6185         {
6186           /* we are going to scroll, and will update dy */
6187           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6188           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6189               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6190             {
6191               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6192               if (validate_row (tree_view, tree, node, &iter, path))
6193                 size_changed = TRUE;
6194             }
6195
6196           if (tree_view->priv->scroll_to_use_align)
6197             {
6198               gint height = gtk_tree_view_get_row_height (tree_view, node);
6199               area_above = (total_height - height) *
6200                 tree_view->priv->scroll_to_row_align;
6201               area_below = total_height - area_above - height;
6202               area_above = MAX (area_above, 0);
6203               area_below = MAX (area_below, 0);
6204             }
6205           else
6206             {
6207               /* two cases:
6208                * 1) row not visible
6209                * 2) row visible
6210                */
6211               gint dy;
6212               gint height = gtk_tree_view_get_row_height (tree_view, node);
6213
6214               dy = _gtk_rbtree_node_find_offset (tree, node);
6215
6216               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6217                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6218                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6219                 {
6220                   /* row visible: keep the row at the same position */
6221                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6222                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6223                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6224                                - dy - height;
6225                 }
6226               else
6227                 {
6228                   /* row not visible */
6229                   if (dy >= 0
6230                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6231                     {
6232                       /* row at the beginning -- fixed */
6233                       area_above = dy;
6234                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6235                                    - area_above - height;
6236                     }
6237                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6238                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6239                     {
6240                       /* row at the end -- fixed */
6241                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6242                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6243                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6244                                    area_above - height;
6245
6246                       if (area_below < 0)
6247                         {
6248                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6249                           area_below = 0;
6250                         }
6251                     }
6252                   else
6253                     {
6254                       /* row somewhere in the middle, bring it to the top
6255                        * of the view
6256                        */
6257                       area_above = 0;
6258                       area_below = total_height - height;
6259                     }
6260                 }
6261             }
6262         }
6263       else
6264         /* the scroll to isn't valid; ignore it.
6265          */
6266         {
6267           if (tree_view->priv->scroll_to_path && !path)
6268             {
6269               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6270               tree_view->priv->scroll_to_path = NULL;
6271             }
6272           if (path)
6273             gtk_tree_path_free (path);
6274           path = NULL;
6275         }
6276     }
6277
6278   /* We didn't have a scroll_to set, so we just handle things normally
6279    */
6280   if (path == NULL)
6281     {
6282       gint offset;
6283
6284       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6285                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6286                                         &tree, &node);
6287       if (node == NULL)
6288         {
6289           /* In this case, nothing has been validated */
6290           path = gtk_tree_path_new_first ();
6291           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6292         }
6293       else
6294         {
6295           path = _gtk_tree_path_new_from_rbtree (tree, node);
6296           total_height += offset;
6297         }
6298
6299       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6300
6301       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6302           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6303         {
6304           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6305           if (validate_row (tree_view, tree, node, &iter, path))
6306             size_changed = TRUE;
6307         }
6308       area_above = 0;
6309       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6310     }
6311
6312   above_path = gtk_tree_path_copy (path);
6313
6314   /* if we do not validate any row above the new top_row, we will make sure
6315    * that the row immediately above top_row has been validated. (if we do not
6316    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6317    * when invalidated that row's height will be zero. and this will mess up
6318    * scrolling).
6319    */
6320   if (area_above == 0)
6321     {
6322       GtkRBTree *tmptree;
6323       GtkRBNode *tmpnode;
6324
6325       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6326       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6327
6328       if (tmpnode)
6329         {
6330           GtkTreePath *tmppath;
6331           GtkTreeIter tmpiter;
6332
6333           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6334           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6335
6336           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6337               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6338             {
6339               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6340               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6341                 size_changed = TRUE;
6342             }
6343
6344           gtk_tree_path_free (tmppath);
6345         }
6346     }
6347
6348   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6349    * backwards is much slower then forward, as there is no iter_prev function.
6350    * We go forwards first in case we run out of tree.  Then we go backwards to
6351    * fill out the top.
6352    */
6353   while (node && area_below > 0)
6354     {
6355       if (node->children)
6356         {
6357           GtkTreeIter parent = iter;
6358           gboolean has_child;
6359
6360           tree = node->children;
6361           node = _gtk_rbtree_first (tree);
6362
6363           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6364                                                     &iter,
6365                                                     &parent);
6366           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6367           gtk_tree_path_down (path);
6368         }
6369       else
6370         {
6371           gboolean done = FALSE;
6372           do
6373             {
6374               node = _gtk_rbtree_next (tree, node);
6375               if (node != NULL)
6376                 {
6377                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6378                   done = TRUE;
6379                   gtk_tree_path_next (path);
6380
6381                   /* Sanity Check! */
6382                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6383                 }
6384               else
6385                 {
6386                   GtkTreeIter parent_iter = iter;
6387                   gboolean has_parent;
6388
6389                   node = tree->parent_node;
6390                   tree = tree->parent_tree;
6391                   if (tree == NULL)
6392                     break;
6393                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6394                                                            &iter,
6395                                                            &parent_iter);
6396                   gtk_tree_path_up (path);
6397
6398                   /* Sanity check */
6399                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6400                 }
6401             }
6402           while (!done);
6403         }
6404
6405       if (!node)
6406         break;
6407
6408       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6409           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6410         {
6411           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6412           if (validate_row (tree_view, tree, node, &iter, path))
6413               size_changed = TRUE;
6414         }
6415
6416       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6417     }
6418   gtk_tree_path_free (path);
6419
6420   /* If we ran out of tree, and have extra area_below left, we need to add it
6421    * to area_above */
6422   if (area_below > 0)
6423     area_above += area_below;
6424
6425   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6426
6427   /* We walk backwards */
6428   while (area_above > 0)
6429     {
6430       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6431
6432       /* Always find the new path in the tree.  We cannot just assume
6433        * a gtk_tree_path_prev() is enough here, as there might be children
6434        * in between this node and the previous sibling node.  If this
6435        * appears to be a performance hotspot in profiles, we can look into
6436        * intrigate logic for keeping path, node and iter in sync like
6437        * we do for forward walks.  (Which will be hard because of the lacking
6438        * iter_prev).
6439        */
6440
6441       if (node == NULL)
6442         break;
6443
6444       gtk_tree_path_free (above_path);
6445       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6446
6447       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6448
6449       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6450           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6451         {
6452           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6453           if (validate_row (tree_view, tree, node, &iter, above_path))
6454             size_changed = TRUE;
6455         }
6456       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6457     }
6458
6459   /* if we scrolled to a path, we need to set the dy here,
6460    * and sync the top row accordingly
6461    */
6462   if (tree_view->priv->scroll_to_path)
6463     {
6464       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6465       gtk_tree_view_top_row_to_dy (tree_view);
6466
6467       need_redraw = TRUE;
6468     }
6469   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6470     {
6471       /* when we are not scrolling, we should never set dy to something
6472        * else than zero. we update top_row to be in sync with dy = 0.
6473        */
6474       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6475       gtk_tree_view_dy_to_top_row (tree_view);
6476     }
6477   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6478     {
6479       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6480       gtk_tree_view_dy_to_top_row (tree_view);
6481     }
6482   else
6483     gtk_tree_view_top_row_to_dy (tree_view);
6484
6485   /* update width/height and queue a resize */
6486   if (size_changed)
6487     {
6488       GtkRequisition requisition;
6489
6490       /* We temporarily guess a size, under the assumption that it will be the
6491        * same when we get our next size_allocate.  If we don't do this, we'll be
6492        * in an inconsistent state if we call top_row_to_dy. */
6493
6494       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6495                                      &requisition, NULL);
6496       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6497                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6498       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6499                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6500       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6501     }
6502
6503   if (tree_view->priv->scroll_to_path)
6504     {
6505       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6506       tree_view->priv->scroll_to_path = NULL;
6507     }
6508
6509   if (above_path)
6510     gtk_tree_path_free (above_path);
6511
6512   if (tree_view->priv->scroll_to_column)
6513     {
6514       tree_view->priv->scroll_to_column = NULL;
6515     }
6516   if (need_redraw)
6517     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6518 }
6519
6520 static void
6521 initialize_fixed_height_mode (GtkTreeView *tree_view)
6522 {
6523   if (!tree_view->priv->tree)
6524     return;
6525
6526   if (tree_view->priv->fixed_height < 0)
6527     {
6528       GtkTreeIter iter;
6529       GtkTreePath *path;
6530
6531       GtkRBTree *tree = NULL;
6532       GtkRBNode *node = NULL;
6533
6534       tree = tree_view->priv->tree;
6535       node = tree->root;
6536
6537       path = _gtk_tree_path_new_from_rbtree (tree, node);
6538       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6539
6540       validate_row (tree_view, tree, node, &iter, path);
6541
6542       gtk_tree_path_free (path);
6543
6544       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6545     }
6546
6547    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6548                                  tree_view->priv->fixed_height, TRUE);
6549 }
6550
6551 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6552  * the left-most uninvalidated node.  We then try walking right, validating
6553  * nodes.  Once we find a valid node, we repeat the previous process of finding
6554  * the first invalid node.
6555  */
6556
6557 static gboolean
6558 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6559 {
6560   GtkRBTree *tree = NULL;
6561   GtkRBNode *node = NULL;
6562   gboolean validated_area = FALSE;
6563   gint retval = TRUE;
6564   GtkTreePath *path = NULL;
6565   GtkTreeIter iter;
6566   GTimer *timer;
6567   gint i = 0;
6568
6569   gint y = -1;
6570   gint prev_height = -1;
6571   gboolean fixed_height = TRUE;
6572
6573   g_assert (tree_view);
6574
6575   if (tree_view->priv->tree == NULL)
6576       return FALSE;
6577
6578   if (tree_view->priv->fixed_height_mode)
6579     {
6580       if (tree_view->priv->fixed_height < 0)
6581         initialize_fixed_height_mode (tree_view);
6582
6583       return FALSE;
6584     }
6585
6586   timer = g_timer_new ();
6587   g_timer_start (timer);
6588
6589   do
6590     {
6591       gboolean changed = FALSE;
6592
6593       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6594         {
6595           retval = FALSE;
6596           goto done;
6597         }
6598
6599       if (path != NULL)
6600         {
6601           node = _gtk_rbtree_next (tree, node);
6602           if (node != NULL)
6603             {
6604               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6605               gtk_tree_path_next (path);
6606             }
6607           else
6608             {
6609               gtk_tree_path_free (path);
6610               path = NULL;
6611             }
6612         }
6613
6614       if (path == NULL)
6615         {
6616           tree = tree_view->priv->tree;
6617           node = tree_view->priv->tree->root;
6618
6619           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6620
6621           do
6622             {
6623               if (!_gtk_rbtree_is_nil (node->left) &&
6624                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6625                 {
6626                   node = node->left;
6627                 }
6628               else if (!_gtk_rbtree_is_nil (node->right) &&
6629                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6630                 {
6631                   node = node->right;
6632                 }
6633               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6634                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6635                 {
6636                   break;
6637                 }
6638               else if (node->children != NULL)
6639                 {
6640                   tree = node->children;
6641                   node = tree->root;
6642                 }
6643               else
6644                 /* RBTree corruption!  All bad */
6645                 g_assert_not_reached ();
6646             }
6647           while (TRUE);
6648           path = _gtk_tree_path_new_from_rbtree (tree, node);
6649           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6650         }
6651
6652       changed = validate_row (tree_view, tree, node, &iter, path);
6653       validated_area = changed || validated_area;
6654
6655       if (changed)
6656         {
6657           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6658
6659           if (y == -1 || y > offset)
6660             y = offset;
6661         }
6662
6663       if (!tree_view->priv->fixed_height_check)
6664         {
6665           gint height;
6666
6667           height = gtk_tree_view_get_row_height (tree_view, node);
6668           if (prev_height < 0)
6669             prev_height = height;
6670           else if (prev_height != height)
6671             fixed_height = FALSE;
6672         }
6673
6674       i++;
6675     }
6676   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6677
6678   if (!tree_view->priv->fixed_height_check)
6679    {
6680      if (fixed_height)
6681        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6682
6683      tree_view->priv->fixed_height_check = 1;
6684    }
6685
6686  done:
6687   if (validated_area)
6688     {
6689       GtkRequisition requisition;
6690
6691       /* We temporarily guess a size, under the assumption that it will be the
6692        * same when we get our next size_allocate.  If we don't do this, we'll be
6693        * in an inconsistent state when we call top_row_to_dy. */
6694
6695       /* FIXME: This is called from size_request, for some reason it is not infinitely
6696        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6697        * not allowed (from inside ->get_preferred_width/height() implementations, one
6698        * should call the vfuncs directly). However what is desired here is the full
6699        * size including any margins and limited by any alignment (i.e. after
6700        * GtkWidget:adjust_size_request() is called).
6701        *
6702        * Currently bypassing this but the real solution is to not update the scroll adjustments
6703        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6704        */
6705       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6706
6707       /* If rows above the current position have changed height, this has
6708        * affected the current view and thus needs a redraw.
6709        */
6710       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6711         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6712
6713       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6714                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6715       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6716                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6717
6718       if (queue_resize)
6719         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6720     }
6721
6722   if (path) gtk_tree_path_free (path);
6723   g_timer_destroy (timer);
6724
6725   return retval;
6726 }
6727
6728 static gboolean
6729 validate_rows (GtkTreeView *tree_view)
6730 {
6731   gboolean retval;
6732
6733   retval = do_validate_rows (tree_view, TRUE);
6734
6735   if (! retval && tree_view->priv->validate_rows_timer)
6736     {
6737       g_source_remove (tree_view->priv->validate_rows_timer);
6738       tree_view->priv->validate_rows_timer = 0;
6739     }
6740
6741   return retval;
6742 }
6743
6744 static gboolean
6745 validate_rows_handler (GtkTreeView *tree_view)
6746 {
6747   gboolean retval;
6748
6749   retval = do_validate_rows (tree_view, TRUE);
6750   if (! retval && tree_view->priv->validate_rows_timer)
6751     {
6752       g_source_remove (tree_view->priv->validate_rows_timer);
6753       tree_view->priv->validate_rows_timer = 0;
6754     }
6755
6756   return retval;
6757 }
6758
6759 static gboolean
6760 do_presize_handler (GtkTreeView *tree_view)
6761 {
6762   if (tree_view->priv->mark_rows_col_dirty)
6763     {
6764       if (tree_view->priv->tree)
6765         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6766       tree_view->priv->mark_rows_col_dirty = FALSE;
6767     }
6768   validate_visible_area (tree_view);
6769   tree_view->priv->presize_handler_timer = 0;
6770
6771   if (tree_view->priv->fixed_height_mode)
6772     {
6773       GtkRequisition requisition;
6774
6775       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6776                                      &requisition, NULL);
6777
6778       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6779                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6780       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6781                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6782       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6783     }
6784
6785   return FALSE;
6786 }
6787
6788 static gboolean
6789 presize_handler_callback (gpointer data)
6790 {
6791   do_presize_handler (GTK_TREE_VIEW (data));
6792
6793   return FALSE;
6794 }
6795
6796 static void
6797 install_presize_handler (GtkTreeView *tree_view)
6798 {
6799   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6800     return;
6801
6802   if (! tree_view->priv->presize_handler_timer)
6803     {
6804       tree_view->priv->presize_handler_timer =
6805         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6806     }
6807   if (! tree_view->priv->validate_rows_timer)
6808     {
6809       tree_view->priv->validate_rows_timer =
6810         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6811     }
6812 }
6813
6814 static void
6815 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6816 {
6817   /* Prior to drawing, we make sure the visible area is validated. */
6818   if (tree_view->priv->presize_handler_timer)
6819     {
6820       g_source_remove (tree_view->priv->presize_handler_timer);
6821       tree_view->priv->presize_handler_timer = 0;
6822
6823       do_presize_handler (tree_view);
6824     }
6825
6826   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6827 }
6828
6829 static gboolean
6830 scroll_sync_handler (GtkTreeView *tree_view)
6831 {
6832   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6833     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6834   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6835     gtk_tree_view_top_row_to_dy (tree_view);
6836   else
6837     gtk_tree_view_dy_to_top_row (tree_view);
6838
6839   tree_view->priv->scroll_sync_timer = 0;
6840
6841   return FALSE;
6842 }
6843
6844 static void
6845 install_scroll_sync_handler (GtkTreeView *tree_view)
6846 {
6847   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6848     return;
6849
6850   if (!tree_view->priv->scroll_sync_timer)
6851     {
6852       tree_view->priv->scroll_sync_timer =
6853         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6854     }
6855 }
6856
6857 static void
6858 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6859                            GtkTreePath *path,
6860                            gint         offset)
6861 {
6862   gtk_tree_row_reference_free (tree_view->priv->top_row);
6863
6864   if (!path)
6865     {
6866       tree_view->priv->top_row = NULL;
6867       tree_view->priv->top_row_dy = 0;
6868     }
6869   else
6870     {
6871       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6872       tree_view->priv->top_row_dy = offset;
6873     }
6874 }
6875
6876 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6877  * it's set to be NULL, and top_row_dy is 0;
6878  */
6879 static void
6880 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6881 {
6882   gint offset;
6883   GtkTreePath *path;
6884   GtkRBTree *tree;
6885   GtkRBNode *node;
6886
6887   if (tree_view->priv->tree == NULL)
6888     {
6889       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6890     }
6891   else
6892     {
6893       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6894                                         tree_view->priv->dy,
6895                                         &tree, &node);
6896
6897       if (tree == NULL)
6898         {
6899           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6900         }
6901       else
6902         {
6903           path = _gtk_tree_path_new_from_rbtree (tree, node);
6904           gtk_tree_view_set_top_row (tree_view, path, offset);
6905           gtk_tree_path_free (path);
6906         }
6907     }
6908 }
6909
6910 static void
6911 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6912 {
6913   GtkTreePath *path;
6914   GtkRBTree *tree;
6915   GtkRBNode *node;
6916   int new_dy;
6917
6918   /* Avoid recursive calls */
6919   if (tree_view->priv->in_top_row_to_dy)
6920     return;
6921
6922   if (tree_view->priv->top_row)
6923     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6924   else
6925     path = NULL;
6926
6927   if (!path)
6928     tree = NULL;
6929   else
6930     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6931
6932   if (path)
6933     gtk_tree_path_free (path);
6934
6935   if (tree == NULL)
6936     {
6937       /* keep dy and set new toprow */
6938       gtk_tree_row_reference_free (tree_view->priv->top_row);
6939       tree_view->priv->top_row = NULL;
6940       tree_view->priv->top_row_dy = 0;
6941       /* DO NOT install the idle handler */
6942       gtk_tree_view_dy_to_top_row (tree_view);
6943       return;
6944     }
6945
6946   if (gtk_tree_view_get_row_height (tree_view, node)
6947       < tree_view->priv->top_row_dy)
6948     {
6949       /* new top row -- do NOT install the idle handler */
6950       gtk_tree_view_dy_to_top_row (tree_view);
6951       return;
6952     }
6953
6954   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6955   new_dy += tree_view->priv->top_row_dy;
6956
6957   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6958     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6959
6960   new_dy = MAX (0, new_dy);
6961
6962   tree_view->priv->in_top_row_to_dy = TRUE;
6963   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6964   tree_view->priv->in_top_row_to_dy = FALSE;
6965 }
6966
6967
6968 void
6969 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6970                                             gboolean     install_handler)
6971 {
6972   tree_view->priv->mark_rows_col_dirty = TRUE;
6973
6974   if (install_handler)
6975     install_presize_handler (tree_view);
6976 }
6977
6978 /*
6979  * This function works synchronously (due to the while (validate_rows...)
6980  * loop).
6981  *
6982  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6983  * here. You now need to check that yourself.
6984  */
6985 void
6986 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6987                                 GtkTreeViewColumn *column)
6988 {
6989   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6990   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6991
6992   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6993
6994   do_presize_handler (tree_view);
6995   while (validate_rows (tree_view));
6996
6997   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6998 }
6999
7000 /* Drag-and-drop */
7001
7002 static void
7003 set_source_row (GdkDragContext *context,
7004                 GtkTreeModel   *model,
7005                 GtkTreePath    *source_row)
7006 {
7007   g_object_set_data_full (G_OBJECT (context),
7008                           I_("gtk-tree-view-source-row"),
7009                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7010                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7011 }
7012
7013 static GtkTreePath*
7014 get_source_row (GdkDragContext *context)
7015 {
7016   GtkTreeRowReference *ref =
7017     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7018
7019   if (ref)
7020     return gtk_tree_row_reference_get_path (ref);
7021   else
7022     return NULL;
7023 }
7024
7025 typedef struct
7026 {
7027   GtkTreeRowReference *dest_row;
7028   guint                path_down_mode   : 1;
7029   guint                empty_view_drop  : 1;
7030   guint                drop_append_mode : 1;
7031 }
7032 DestRow;
7033
7034 static void
7035 dest_row_free (gpointer data)
7036 {
7037   DestRow *dr = (DestRow *)data;
7038
7039   gtk_tree_row_reference_free (dr->dest_row);
7040   g_slice_free (DestRow, dr);
7041 }
7042
7043 static void
7044 set_dest_row (GdkDragContext *context,
7045               GtkTreeModel   *model,
7046               GtkTreePath    *dest_row,
7047               gboolean        path_down_mode,
7048               gboolean        empty_view_drop,
7049               gboolean        drop_append_mode)
7050 {
7051   DestRow *dr;
7052
7053   if (!dest_row)
7054     {
7055       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7056                               NULL, NULL);
7057       return;
7058     }
7059
7060   dr = g_slice_new (DestRow);
7061
7062   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7063   dr->path_down_mode = path_down_mode != FALSE;
7064   dr->empty_view_drop = empty_view_drop != FALSE;
7065   dr->drop_append_mode = drop_append_mode != FALSE;
7066
7067   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7068                           dr, (GDestroyNotify) dest_row_free);
7069 }
7070
7071 static GtkTreePath*
7072 get_dest_row (GdkDragContext *context,
7073               gboolean       *path_down_mode)
7074 {
7075   DestRow *dr =
7076     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7077
7078   if (dr)
7079     {
7080       GtkTreePath *path = NULL;
7081
7082       if (path_down_mode)
7083         *path_down_mode = dr->path_down_mode;
7084
7085       if (dr->dest_row)
7086         path = gtk_tree_row_reference_get_path (dr->dest_row);
7087       else if (dr->empty_view_drop)
7088         path = gtk_tree_path_new_from_indices (0, -1);
7089       else
7090         path = NULL;
7091
7092       if (path && dr->drop_append_mode)
7093         gtk_tree_path_next (path);
7094
7095       return path;
7096     }
7097   else
7098     return NULL;
7099 }
7100
7101 /* Get/set whether drag_motion requested the drag data and
7102  * drag_data_received should thus not actually insert the data,
7103  * since the data doesn't result from a drop.
7104  */
7105 static void
7106 set_status_pending (GdkDragContext *context,
7107                     GdkDragAction   suggested_action)
7108 {
7109   g_object_set_data (G_OBJECT (context),
7110                      I_("gtk-tree-view-status-pending"),
7111                      GINT_TO_POINTER (suggested_action));
7112 }
7113
7114 static GdkDragAction
7115 get_status_pending (GdkDragContext *context)
7116 {
7117   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7118                                              "gtk-tree-view-status-pending"));
7119 }
7120
7121 static TreeViewDragInfo*
7122 get_info (GtkTreeView *tree_view)
7123 {
7124   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7125 }
7126
7127 static void
7128 destroy_info (TreeViewDragInfo *di)
7129 {
7130   g_slice_free (TreeViewDragInfo, di);
7131 }
7132
7133 static TreeViewDragInfo*
7134 ensure_info (GtkTreeView *tree_view)
7135 {
7136   TreeViewDragInfo *di;
7137
7138   di = get_info (tree_view);
7139
7140   if (di == NULL)
7141     {
7142       di = g_slice_new0 (TreeViewDragInfo);
7143
7144       g_object_set_data_full (G_OBJECT (tree_view),
7145                               I_("gtk-tree-view-drag-info"),
7146                               di,
7147                               (GDestroyNotify) destroy_info);
7148     }
7149
7150   return di;
7151 }
7152
7153 static void
7154 remove_info (GtkTreeView *tree_view)
7155 {
7156   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7157 }
7158
7159 #if 0
7160 static gint
7161 drag_scan_timeout (gpointer data)
7162 {
7163   GtkTreeView *tree_view;
7164   gint x, y;
7165   GdkModifierType state;
7166   GtkTreePath *path = NULL;
7167   GtkTreeViewColumn *column = NULL;
7168   GdkRectangle visible_rect;
7169
7170   GDK_THREADS_ENTER ();
7171
7172   tree_view = GTK_TREE_VIEW (data);
7173
7174   gdk_window_get_device_position (tree_view->priv->bin_window,
7175                                   gdk_device_manager_get_client_pointer (
7176                                     gdk_display_get_device_manager (
7177                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7178                                   &x, &y, &state);
7179
7180   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7181
7182   /* See if we are near the edge. */
7183   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7184       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7185       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7186       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7187     {
7188       gtk_tree_view_get_path_at_pos (tree_view,
7189                                      tree_view->priv->bin_window,
7190                                      x, y,
7191                                      &path,
7192                                      &column,
7193                                      NULL,
7194                                      NULL);
7195
7196       if (path != NULL)
7197         {
7198           gtk_tree_view_scroll_to_cell (tree_view,
7199                                         path,
7200                                         column,
7201                                         TRUE,
7202                                         0.5, 0.5);
7203
7204           gtk_tree_path_free (path);
7205         }
7206     }
7207
7208   GDK_THREADS_LEAVE ();
7209
7210   return TRUE;
7211 }
7212 #endif /* 0 */
7213
7214 static void
7215 add_scroll_timeout (GtkTreeView *tree_view)
7216 {
7217   if (tree_view->priv->scroll_timeout == 0)
7218     {
7219       tree_view->priv->scroll_timeout =
7220         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7221     }
7222 }
7223
7224 static void
7225 remove_scroll_timeout (GtkTreeView *tree_view)
7226 {
7227   if (tree_view->priv->scroll_timeout != 0)
7228     {
7229       g_source_remove (tree_view->priv->scroll_timeout);
7230       tree_view->priv->scroll_timeout = 0;
7231     }
7232 }
7233
7234 static gboolean
7235 check_model_dnd (GtkTreeModel *model,
7236                  GType         required_iface,
7237                  const gchar  *signal)
7238 {
7239   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7240     {
7241       g_warning ("You must override the default '%s' handler "
7242                  "on GtkTreeView when using models that don't support "
7243                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7244                  "is to connect to '%s' and call "
7245                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7246                  "the default handler from running. Look at the source code "
7247                  "for the default handler in gtktreeview.c to get an idea what "
7248                  "your handler should do. (gtktreeview.c is in the GTK source "
7249                  "code.) If you're using GTK from a language other than C, "
7250                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7251                  signal, g_type_name (required_iface), signal);
7252       return FALSE;
7253     }
7254   else
7255     return TRUE;
7256 }
7257
7258 static void
7259 remove_open_timeout (GtkTreeView *tree_view)
7260 {
7261   if (tree_view->priv->open_dest_timeout != 0)
7262     {
7263       g_source_remove (tree_view->priv->open_dest_timeout);
7264       tree_view->priv->open_dest_timeout = 0;
7265     }
7266 }
7267
7268
7269 static gint
7270 open_row_timeout (gpointer data)
7271 {
7272   GtkTreeView *tree_view = data;
7273   GtkTreePath *dest_path = NULL;
7274   GtkTreeViewDropPosition pos;
7275   gboolean result = FALSE;
7276
7277   gtk_tree_view_get_drag_dest_row (tree_view,
7278                                    &dest_path,
7279                                    &pos);
7280
7281   if (dest_path &&
7282       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7283        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7284     {
7285       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7286       tree_view->priv->open_dest_timeout = 0;
7287
7288       gtk_tree_path_free (dest_path);
7289     }
7290   else
7291     {
7292       if (dest_path)
7293         gtk_tree_path_free (dest_path);
7294
7295       result = TRUE;
7296     }
7297
7298   return result;
7299 }
7300
7301 static gboolean
7302 scroll_row_timeout (gpointer data)
7303 {
7304   GtkTreeView *tree_view = data;
7305
7306   gtk_tree_view_vertical_autoscroll (tree_view);
7307
7308   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7309     gtk_tree_view_update_rubber_band (tree_view);
7310
7311   return TRUE;
7312 }
7313
7314 /* Returns TRUE if event should not be propagated to parent widgets */
7315 static gboolean
7316 set_destination_row (GtkTreeView    *tree_view,
7317                      GdkDragContext *context,
7318                      /* coordinates relative to the widget */
7319                      gint            x,
7320                      gint            y,
7321                      GdkDragAction  *suggested_action,
7322                      GdkAtom        *target)
7323 {
7324   GtkTreePath *path = NULL;
7325   GtkTreeViewDropPosition pos;
7326   GtkTreeViewDropPosition old_pos;
7327   TreeViewDragInfo *di;
7328   GtkWidget *widget;
7329   GtkTreePath *old_dest_path = NULL;
7330   gboolean can_drop = FALSE;
7331
7332   *suggested_action = 0;
7333   *target = GDK_NONE;
7334
7335   widget = GTK_WIDGET (tree_view);
7336
7337   di = get_info (tree_view);
7338
7339   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7340     {
7341       /* someone unset us as a drag dest, note that if
7342        * we return FALSE drag_leave isn't called
7343        */
7344
7345       gtk_tree_view_set_drag_dest_row (tree_view,
7346                                        NULL,
7347                                        GTK_TREE_VIEW_DROP_BEFORE);
7348
7349       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7350       remove_open_timeout (GTK_TREE_VIEW (widget));
7351
7352       return FALSE; /* no longer a drop site */
7353     }
7354
7355   *target = gtk_drag_dest_find_target (widget, context,
7356                                        gtk_drag_dest_get_target_list (widget));
7357   if (*target == GDK_NONE)
7358     {
7359       return FALSE;
7360     }
7361
7362   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7363                                           x, y,
7364                                           &path,
7365                                           &pos))
7366     {
7367       gint n_children;
7368       GtkTreeModel *model;
7369
7370       remove_open_timeout (tree_view);
7371
7372       /* the row got dropped on empty space, let's setup a special case
7373        */
7374
7375       if (path)
7376         gtk_tree_path_free (path);
7377
7378       model = gtk_tree_view_get_model (tree_view);
7379
7380       n_children = gtk_tree_model_iter_n_children (model, NULL);
7381       if (n_children)
7382         {
7383           pos = GTK_TREE_VIEW_DROP_AFTER;
7384           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7385         }
7386       else
7387         {
7388           pos = GTK_TREE_VIEW_DROP_BEFORE;
7389           path = gtk_tree_path_new_from_indices (0, -1);
7390         }
7391
7392       can_drop = TRUE;
7393
7394       goto out;
7395     }
7396
7397   g_assert (path);
7398
7399   /* If we left the current row's "open" zone, unset the timeout for
7400    * opening the row
7401    */
7402   gtk_tree_view_get_drag_dest_row (tree_view,
7403                                    &old_dest_path,
7404                                    &old_pos);
7405
7406   if (old_dest_path &&
7407       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7408        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7409          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7410     remove_open_timeout (tree_view);
7411
7412   if (old_dest_path)
7413     gtk_tree_path_free (old_dest_path);
7414
7415   if (TRUE /* FIXME if the location droppable predicate */)
7416     {
7417       can_drop = TRUE;
7418     }
7419
7420 out:
7421   if (can_drop)
7422     {
7423       GtkWidget *source_widget;
7424
7425       *suggested_action = gdk_drag_context_get_suggested_action (context);
7426       source_widget = gtk_drag_get_source_widget (context);
7427
7428       if (source_widget == widget)
7429         {
7430           /* Default to MOVE, unless the user has
7431            * pressed ctrl or shift to affect available actions
7432            */
7433           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7434             *suggested_action = GDK_ACTION_MOVE;
7435         }
7436
7437       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7438                                        path, pos);
7439     }
7440   else
7441     {
7442       /* can't drop here */
7443       remove_open_timeout (tree_view);
7444
7445       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7446                                        NULL,
7447                                        GTK_TREE_VIEW_DROP_BEFORE);
7448     }
7449
7450   if (path)
7451     gtk_tree_path_free (path);
7452
7453   return TRUE;
7454 }
7455
7456 static GtkTreePath*
7457 get_logical_dest_row (GtkTreeView *tree_view,
7458                       gboolean    *path_down_mode,
7459                       gboolean    *drop_append_mode)
7460 {
7461   /* adjust path to point to the row the drop goes in front of */
7462   GtkTreePath *path = NULL;
7463   GtkTreeViewDropPosition pos;
7464
7465   g_return_val_if_fail (path_down_mode != NULL, NULL);
7466   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7467
7468   *path_down_mode = FALSE;
7469   *drop_append_mode = 0;
7470
7471   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7472
7473   if (path == NULL)
7474     return NULL;
7475
7476   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7477     ; /* do nothing */
7478   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7479            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7480     *path_down_mode = TRUE;
7481   else
7482     {
7483       GtkTreeIter iter;
7484       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7485
7486       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7487
7488       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7489           !gtk_tree_model_iter_next (model, &iter))
7490         *drop_append_mode = 1;
7491       else
7492         {
7493           *drop_append_mode = 0;
7494           gtk_tree_path_next (path);
7495         }
7496     }
7497
7498   return path;
7499 }
7500
7501 static gboolean
7502 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7503                                         GdkEventMotion   *event)
7504 {
7505   GtkWidget *widget = GTK_WIDGET (tree_view);
7506   GdkDragContext *context;
7507   TreeViewDragInfo *di;
7508   GtkTreePath *path = NULL;
7509   gint button;
7510   gint cell_x, cell_y;
7511   GtkTreeModel *model;
7512   gboolean retval = FALSE;
7513
7514   di = get_info (tree_view);
7515
7516   if (di == NULL || !di->source_set)
7517     goto out;
7518
7519   if (tree_view->priv->pressed_button < 0)
7520     goto out;
7521
7522   if (!gtk_drag_check_threshold (widget,
7523                                  tree_view->priv->press_start_x,
7524                                  tree_view->priv->press_start_y,
7525                                  event->x, event->y))
7526     goto out;
7527
7528   model = gtk_tree_view_get_model (tree_view);
7529
7530   if (model == NULL)
7531     goto out;
7532
7533   button = tree_view->priv->pressed_button;
7534   tree_view->priv->pressed_button = -1;
7535
7536   gtk_tree_view_get_path_at_pos (tree_view,
7537                                  tree_view->priv->press_start_x,
7538                                  tree_view->priv->press_start_y,
7539                                  &path,
7540                                  NULL,
7541                                  &cell_x,
7542                                  &cell_y);
7543
7544   if (path == NULL)
7545     goto out;
7546
7547   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7548       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7549                                            path))
7550     goto out;
7551
7552   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7553     goto out;
7554
7555   /* Now we can begin the drag */
7556
7557   retval = TRUE;
7558
7559   context = gtk_drag_begin (widget,
7560                             gtk_drag_source_get_target_list (widget),
7561                             di->source_actions,
7562                             button,
7563                             (GdkEvent*)event);
7564
7565   set_source_row (context, model, path);
7566
7567  out:
7568   if (path)
7569     gtk_tree_path_free (path);
7570
7571   return retval;
7572 }
7573
7574
7575 static void
7576 gtk_tree_view_drag_begin (GtkWidget      *widget,
7577                           GdkDragContext *context)
7578 {
7579   GtkTreeView *tree_view;
7580   GtkTreePath *path = NULL;
7581   gint cell_x, cell_y;
7582   cairo_surface_t *row_pix;
7583   TreeViewDragInfo *di;
7584
7585   tree_view = GTK_TREE_VIEW (widget);
7586
7587   /* if the user uses a custom DND source impl, we don't set the icon here */
7588   di = get_info (tree_view);
7589
7590   if (di == NULL || !di->source_set)
7591     return;
7592
7593   gtk_tree_view_get_path_at_pos (tree_view,
7594                                  tree_view->priv->press_start_x,
7595                                  tree_view->priv->press_start_y,
7596                                  &path,
7597                                  NULL,
7598                                  &cell_x,
7599                                  &cell_y);
7600
7601   /* If path is NULL, there's nothing we can drag.  For now, we silently
7602    * bail out.  Actually, dragging should not be possible from an empty
7603    * tree view, but there's no way we can cancel that from here.
7604    * Automatically unsetting the tree view as drag source for empty models
7605    * is something that would likely break other people's code ...
7606    */
7607   if (!path)
7608     return;
7609
7610   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7611                                                 path);
7612   cairo_surface_set_device_offset (row_pix,
7613                                    /* the + 1 is for the black border in the icon */
7614                                    - (tree_view->priv->press_start_x + 1),
7615                                    - (cell_y + 1));
7616
7617   gtk_drag_set_icon_surface (context, row_pix);
7618
7619   cairo_surface_destroy (row_pix);
7620   gtk_tree_path_free (path);
7621 }
7622
7623 static void
7624 gtk_tree_view_drag_end (GtkWidget      *widget,
7625                         GdkDragContext *context)
7626 {
7627   /* do nothing */
7628 }
7629
7630 /* Default signal implementations for the drag signals */
7631 static void
7632 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7633                              GdkDragContext   *context,
7634                              GtkSelectionData *selection_data,
7635                              guint             info,
7636                              guint             time)
7637 {
7638   GtkTreeView *tree_view;
7639   GtkTreeModel *model;
7640   TreeViewDragInfo *di;
7641   GtkTreePath *source_row;
7642
7643   tree_view = GTK_TREE_VIEW (widget);
7644
7645   model = gtk_tree_view_get_model (tree_view);
7646
7647   if (model == NULL)
7648     return;
7649
7650   di = get_info (GTK_TREE_VIEW (widget));
7651
7652   if (di == NULL)
7653     return;
7654
7655   source_row = get_source_row (context);
7656
7657   if (source_row == NULL)
7658     return;
7659
7660   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7661    * any model; for DragSource models there are some other targets
7662    * we also support.
7663    */
7664
7665   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7666       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7667                                           source_row,
7668                                           selection_data))
7669     goto done;
7670
7671   /* If drag_data_get does nothing, try providing row data. */
7672   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7673     {
7674       gtk_tree_set_row_drag_data (selection_data,
7675                                   model,
7676                                   source_row);
7677     }
7678
7679  done:
7680   gtk_tree_path_free (source_row);
7681 }
7682
7683
7684 static void
7685 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7686                                 GdkDragContext *context)
7687 {
7688   TreeViewDragInfo *di;
7689   GtkTreeModel *model;
7690   GtkTreeView *tree_view;
7691   GtkTreePath *source_row;
7692
7693   tree_view = GTK_TREE_VIEW (widget);
7694   model = gtk_tree_view_get_model (tree_view);
7695
7696   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7697     return;
7698
7699   di = get_info (tree_view);
7700
7701   if (di == NULL)
7702     return;
7703
7704   source_row = get_source_row (context);
7705
7706   if (source_row == NULL)
7707     return;
7708
7709   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7710                                          source_row);
7711
7712   gtk_tree_path_free (source_row);
7713
7714   set_source_row (context, NULL, NULL);
7715 }
7716
7717 static void
7718 gtk_tree_view_drag_leave (GtkWidget      *widget,
7719                           GdkDragContext *context,
7720                           guint             time)
7721 {
7722   /* unset any highlight row */
7723   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7724                                    NULL,
7725                                    GTK_TREE_VIEW_DROP_BEFORE);
7726
7727   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7728   remove_open_timeout (GTK_TREE_VIEW (widget));
7729 }
7730
7731
7732 static gboolean
7733 gtk_tree_view_drag_motion (GtkWidget        *widget,
7734                            GdkDragContext   *context,
7735                            /* coordinates relative to the widget */
7736                            gint              x,
7737                            gint              y,
7738                            guint             time)
7739 {
7740   gboolean empty;
7741   GtkTreePath *path = NULL;
7742   GtkTreeViewDropPosition pos;
7743   GtkTreeView *tree_view;
7744   GdkDragAction suggested_action = 0;
7745   GdkAtom target;
7746
7747   tree_view = GTK_TREE_VIEW (widget);
7748
7749   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7750     return FALSE;
7751
7752   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7753
7754   /* we only know this *after* set_desination_row */
7755   empty = tree_view->priv->empty_view_drop;
7756
7757   if (path == NULL && !empty)
7758     {
7759       /* Can't drop here. */
7760       gdk_drag_status (context, 0, time);
7761     }
7762   else
7763     {
7764       if (tree_view->priv->open_dest_timeout == 0 &&
7765           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7766            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7767         {
7768           tree_view->priv->open_dest_timeout =
7769             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7770         }
7771       else
7772         {
7773           add_scroll_timeout (tree_view);
7774         }
7775
7776       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7777         {
7778           /* Request data so we can use the source row when
7779            * determining whether to accept the drop
7780            */
7781           set_status_pending (context, suggested_action);
7782           gtk_drag_get_data (widget, context, target, time);
7783         }
7784       else
7785         {
7786           set_status_pending (context, 0);
7787           gdk_drag_status (context, suggested_action, time);
7788         }
7789     }
7790
7791   if (path)
7792     gtk_tree_path_free (path);
7793
7794   return TRUE;
7795 }
7796
7797
7798 static gboolean
7799 gtk_tree_view_drag_drop (GtkWidget        *widget,
7800                          GdkDragContext   *context,
7801                          /* coordinates relative to the widget */
7802                          gint              x,
7803                          gint              y,
7804                          guint             time)
7805 {
7806   GtkTreeView *tree_view;
7807   GtkTreePath *path;
7808   GdkDragAction suggested_action = 0;
7809   GdkAtom target = GDK_NONE;
7810   TreeViewDragInfo *di;
7811   GtkTreeModel *model;
7812   gboolean path_down_mode;
7813   gboolean drop_append_mode;
7814
7815   tree_view = GTK_TREE_VIEW (widget);
7816
7817   model = gtk_tree_view_get_model (tree_view);
7818
7819   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7820   remove_open_timeout (GTK_TREE_VIEW (widget));
7821
7822   di = get_info (tree_view);
7823
7824   if (di == NULL)
7825     return FALSE;
7826
7827   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7828     return FALSE;
7829
7830   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7831     return FALSE;
7832
7833   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7834
7835   if (target != GDK_NONE && path != NULL)
7836     {
7837       /* in case a motion had requested drag data, change things so we
7838        * treat drag data receives as a drop.
7839        */
7840       set_status_pending (context, 0);
7841       set_dest_row (context, model, path,
7842                     path_down_mode, tree_view->priv->empty_view_drop,
7843                     drop_append_mode);
7844     }
7845
7846   if (path)
7847     gtk_tree_path_free (path);
7848
7849   /* Unset this thing */
7850   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7851                                    NULL,
7852                                    GTK_TREE_VIEW_DROP_BEFORE);
7853
7854   if (target != GDK_NONE)
7855     {
7856       gtk_drag_get_data (widget, context, target, time);
7857       return TRUE;
7858     }
7859   else
7860     return FALSE;
7861 }
7862
7863 static void
7864 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7865                                   GdkDragContext   *context,
7866                                   /* coordinates relative to the widget */
7867                                   gint              x,
7868                                   gint              y,
7869                                   GtkSelectionData *selection_data,
7870                                   guint             info,
7871                                   guint             time)
7872 {
7873   GtkTreePath *path;
7874   TreeViewDragInfo *di;
7875   gboolean accepted = FALSE;
7876   GtkTreeModel *model;
7877   GtkTreeView *tree_view;
7878   GtkTreePath *dest_row;
7879   GdkDragAction suggested_action;
7880   gboolean path_down_mode;
7881   gboolean drop_append_mode;
7882
7883   tree_view = GTK_TREE_VIEW (widget);
7884
7885   model = gtk_tree_view_get_model (tree_view);
7886
7887   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7888     return;
7889
7890   di = get_info (tree_view);
7891
7892   if (di == NULL)
7893     return;
7894
7895   suggested_action = get_status_pending (context);
7896
7897   if (suggested_action)
7898     {
7899       /* We are getting this data due to a request in drag_motion,
7900        * rather than due to a request in drag_drop, so we are just
7901        * supposed to call drag_status, not actually paste in the
7902        * data.
7903        */
7904       path = get_logical_dest_row (tree_view, &path_down_mode,
7905                                    &drop_append_mode);
7906
7907       if (path == NULL)
7908         suggested_action = 0;
7909       else if (path_down_mode)
7910         gtk_tree_path_down (path);
7911
7912       if (suggested_action)
7913         {
7914           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7915                                                      path,
7916                                                      selection_data))
7917             {
7918               if (path_down_mode)
7919                 {
7920                   path_down_mode = FALSE;
7921                   gtk_tree_path_up (path);
7922
7923                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7924                                                              path,
7925                                                              selection_data))
7926                     suggested_action = 0;
7927                 }
7928               else
7929                 suggested_action = 0;
7930             }
7931         }
7932
7933       gdk_drag_status (context, suggested_action, time);
7934
7935       if (path)
7936         gtk_tree_path_free (path);
7937
7938       /* If you can't drop, remove user drop indicator until the next motion */
7939       if (suggested_action == 0)
7940         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7941                                          NULL,
7942                                          GTK_TREE_VIEW_DROP_BEFORE);
7943
7944       return;
7945     }
7946
7947   dest_row = get_dest_row (context, &path_down_mode);
7948
7949   if (dest_row == NULL)
7950     return;
7951
7952   if (gtk_selection_data_get_length (selection_data) >= 0)
7953     {
7954       if (path_down_mode)
7955         {
7956           gtk_tree_path_down (dest_row);
7957           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7958                                                      dest_row, selection_data))
7959             gtk_tree_path_up (dest_row);
7960         }
7961     }
7962
7963   if (gtk_selection_data_get_length (selection_data) >= 0)
7964     {
7965       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7966                                                  dest_row,
7967                                                  selection_data))
7968         accepted = TRUE;
7969     }
7970
7971   gtk_drag_finish (context,
7972                    accepted,
7973                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7974                    time);
7975
7976   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7977       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7978       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7979     {
7980       /* special special case drag to "0", scroll to first item */
7981       if (!tree_view->priv->scroll_to_path)
7982         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7983     }
7984
7985   gtk_tree_path_free (dest_row);
7986
7987   /* drop dest_row */
7988   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7989 }
7990
7991
7992
7993 /* GtkContainer Methods
7994  */
7995
7996
7997 static void
7998 gtk_tree_view_remove (GtkContainer *container,
7999                       GtkWidget    *widget)
8000 {
8001   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8002   GtkTreeViewChild *child = NULL;
8003   GList *tmp_list;
8004
8005   tmp_list = tree_view->priv->children;
8006   while (tmp_list)
8007     {
8008       child = tmp_list->data;
8009       if (child->widget == widget)
8010         {
8011           gtk_widget_unparent (widget);
8012
8013           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8014           g_list_free_1 (tmp_list);
8015           g_slice_free (GtkTreeViewChild, child);
8016           return;
8017         }
8018
8019       tmp_list = tmp_list->next;
8020     }
8021
8022   tmp_list = tree_view->priv->columns;
8023
8024   while (tmp_list)
8025     {
8026       GtkTreeViewColumn *column;
8027       GtkWidget         *button;
8028
8029       column = tmp_list->data;
8030       button = gtk_tree_view_column_get_button (column);
8031
8032       if (button == widget)
8033         {
8034           gtk_widget_unparent (widget);
8035           return;
8036         }
8037       tmp_list = tmp_list->next;
8038     }
8039 }
8040
8041 static void
8042 gtk_tree_view_forall (GtkContainer *container,
8043                       gboolean      include_internals,
8044                       GtkCallback   callback,
8045                       gpointer      callback_data)
8046 {
8047   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8048   GtkTreeViewChild *child = NULL;
8049   GtkTreeViewColumn *column;
8050   GtkWidget *button;
8051   GList *tmp_list;
8052
8053   tmp_list = tree_view->priv->children;
8054   while (tmp_list)
8055     {
8056       child = tmp_list->data;
8057       tmp_list = tmp_list->next;
8058
8059       (* callback) (child->widget, callback_data);
8060     }
8061   if (include_internals == FALSE)
8062     return;
8063
8064   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8065     {
8066       column = tmp_list->data;
8067       button = gtk_tree_view_column_get_button (column);
8068
8069       if (button)
8070         (* callback) (button, callback_data);
8071     }
8072 }
8073
8074 /* Returns TRUE is any of the columns contains a cell that can-focus.
8075  * If this is not the case, a column-spanning focus rectangle will be
8076  * drawn.
8077  */
8078 static gboolean
8079 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8080 {
8081   GList *list;
8082
8083   for (list = tree_view->priv->columns; list; list = list->next)
8084     {
8085       GtkTreeViewColumn *column = list->data;
8086
8087       if (!gtk_tree_view_column_get_visible (column))
8088         continue;
8089       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8090         return TRUE;
8091     }
8092
8093   return FALSE;
8094 }
8095
8096 static void
8097 column_sizing_notify (GObject    *object,
8098                       GParamSpec *pspec,
8099                       gpointer    data)
8100 {
8101   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8102
8103   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8104     /* disable fixed height mode */
8105     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8106 }
8107
8108 /**
8109  * gtk_tree_view_set_fixed_height_mode:
8110  * @tree_view: a #GtkTreeView
8111  * @enable: %TRUE to enable fixed height mode
8112  *
8113  * Enables or disables the fixed height mode of @tree_view.
8114  * Fixed height mode speeds up #GtkTreeView by assuming that all
8115  * rows have the same height.
8116  * Only enable this option if all rows are the same height and all
8117  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8118  *
8119  * Since: 2.6
8120  **/
8121 void
8122 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8123                                      gboolean     enable)
8124 {
8125   GList *l;
8126
8127   enable = enable != FALSE;
8128
8129   if (enable == tree_view->priv->fixed_height_mode)
8130     return;
8131
8132   if (!enable)
8133     {
8134       tree_view->priv->fixed_height_mode = 0;
8135       tree_view->priv->fixed_height = -1;
8136
8137       /* force a revalidation */
8138       install_presize_handler (tree_view);
8139     }
8140   else
8141     {
8142       /* make sure all columns are of type FIXED */
8143       for (l = tree_view->priv->columns; l; l = l->next)
8144         {
8145           GtkTreeViewColumn *c = l->data;
8146
8147           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8148         }
8149
8150       /* yes, we really have to do this is in a separate loop */
8151       for (l = tree_view->priv->columns; l; l = l->next)
8152         g_signal_connect (l->data, "notify::sizing",
8153                           G_CALLBACK (column_sizing_notify), tree_view);
8154
8155       tree_view->priv->fixed_height_mode = 1;
8156       tree_view->priv->fixed_height = -1;
8157
8158       if (tree_view->priv->tree)
8159         initialize_fixed_height_mode (tree_view);
8160     }
8161
8162   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8163 }
8164
8165 /**
8166  * gtk_tree_view_get_fixed_height_mode:
8167  * @tree_view: a #GtkTreeView
8168  *
8169  * Returns whether fixed height mode is turned on for @tree_view.
8170  *
8171  * Return value: %TRUE if @tree_view is in fixed height mode
8172  *
8173  * Since: 2.6
8174  **/
8175 gboolean
8176 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8177 {
8178   return tree_view->priv->fixed_height_mode;
8179 }
8180
8181 /* Returns TRUE if the focus is within the headers, after the focus operation is
8182  * done
8183  */
8184 static gboolean
8185 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8186                             GtkDirectionType  dir,
8187                             gboolean          clamp_column_visible)
8188 {
8189   GtkTreeViewColumn *column;
8190   GtkWidget *focus_child;
8191   GtkWidget *button;
8192   GList *last_column, *first_column;
8193   GList *tmp_list;
8194   gboolean rtl;
8195
8196   if (! tree_view->priv->headers_visible)
8197     return FALSE;
8198
8199   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8200
8201   first_column = tree_view->priv->columns;
8202   while (first_column)
8203     {
8204       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8205       button = gtk_tree_view_column_get_button (column);
8206
8207       if (gtk_widget_get_can_focus (button) &&
8208           gtk_tree_view_column_get_visible (column) &&
8209           (gtk_tree_view_column_get_clickable (column) ||
8210            gtk_tree_view_column_get_reorderable (column)))
8211         break;
8212       first_column = first_column->next;
8213     }
8214
8215   /* No headers are visible, or are focusable.  We can't focus in or out.
8216    */
8217   if (first_column == NULL)
8218     return FALSE;
8219
8220   last_column = g_list_last (tree_view->priv->columns);
8221   while (last_column)
8222     {
8223       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8224       button = gtk_tree_view_column_get_button (column);
8225
8226       if (gtk_widget_get_can_focus (button) &&
8227           gtk_tree_view_column_get_visible (column) &&
8228           (gtk_tree_view_column_get_clickable (column) ||
8229            gtk_tree_view_column_get_reorderable (column)))
8230         break;
8231       last_column = last_column->prev;
8232     }
8233
8234
8235   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8236
8237   switch (dir)
8238     {
8239     case GTK_DIR_TAB_BACKWARD:
8240     case GTK_DIR_TAB_FORWARD:
8241     case GTK_DIR_UP:
8242     case GTK_DIR_DOWN:
8243       if (focus_child == NULL)
8244         {
8245           if (tree_view->priv->focus_column != NULL)
8246             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8247           else
8248             button = NULL;
8249
8250           if (button && gtk_widget_get_can_focus (button))
8251             focus_child = button;
8252           else
8253             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8254
8255           gtk_widget_grab_focus (focus_child);
8256           break;
8257         }
8258       return FALSE;
8259
8260     case GTK_DIR_LEFT:
8261     case GTK_DIR_RIGHT:
8262       if (focus_child == NULL)
8263         {
8264           if (tree_view->priv->focus_column != NULL)
8265             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8266           else if (dir == GTK_DIR_LEFT)
8267             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8268           else
8269             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8270
8271           gtk_widget_grab_focus (focus_child);
8272           break;
8273         }
8274
8275       if (gtk_widget_child_focus (focus_child, dir))
8276         {
8277           /* The focus moves inside the button. */
8278           /* This is probably a great example of bad UI */
8279           break;
8280         }
8281
8282       /* We need to move the focus among the row of buttons. */
8283       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8284         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8285           break;
8286
8287       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8288           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8289         {
8290           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8291           break;
8292         }
8293
8294       while (tmp_list)
8295         {
8296           GtkTreeViewColumn *column;
8297           GtkWidget         *button;
8298
8299           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8300             tmp_list = tmp_list->next;
8301           else
8302             tmp_list = tmp_list->prev;
8303
8304           if (tmp_list == NULL)
8305             {
8306               g_warning ("Internal button not found");
8307               break;
8308             }
8309           column = tmp_list->data;
8310           button = gtk_tree_view_column_get_button (column);
8311           if (button &&
8312               gtk_tree_view_column_get_visible (column) &&
8313               gtk_widget_get_can_focus (button))
8314             {
8315               focus_child = button;
8316               gtk_widget_grab_focus (button);
8317               break;
8318             }
8319         }
8320       break;
8321     default:
8322       g_assert_not_reached ();
8323       break;
8324     }
8325
8326   /* if focus child is non-null, we assume it's been set to the current focus child
8327    */
8328   if (focus_child)
8329     {
8330       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8331         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8332           {
8333             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8334             break;
8335           }
8336
8337       if (clamp_column_visible)
8338         {
8339           gtk_tree_view_clamp_column_visible (tree_view,
8340                                               tree_view->priv->focus_column,
8341                                               FALSE);
8342         }
8343     }
8344
8345   return (focus_child != NULL);
8346 }
8347
8348 /* This function returns in 'path' the first focusable path, if the given path
8349  * is already focusable, it's the returned one.
8350  */
8351 static gboolean
8352 search_first_focusable_path (GtkTreeView  *tree_view,
8353                              GtkTreePath **path,
8354                              gboolean      search_forward,
8355                              GtkRBTree   **new_tree,
8356                              GtkRBNode   **new_node)
8357 {
8358   GtkRBTree *tree = NULL;
8359   GtkRBNode *node = NULL;
8360
8361   if (!path || !*path)
8362     return FALSE;
8363
8364   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8365
8366   if (!tree || !node)
8367     return FALSE;
8368
8369   while (node && row_is_separator (tree_view, NULL, *path))
8370     {
8371       if (search_forward)
8372         _gtk_rbtree_next_full (tree, node, &tree, &node);
8373       else
8374         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8375
8376       if (*path)
8377         gtk_tree_path_free (*path);
8378
8379       if (node)
8380         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8381       else
8382         *path = NULL;
8383     }
8384
8385   if (new_tree)
8386     *new_tree = tree;
8387
8388   if (new_node)
8389     *new_node = node;
8390
8391   return (*path != NULL);
8392 }
8393
8394 static gint
8395 gtk_tree_view_focus (GtkWidget        *widget,
8396                      GtkDirectionType  direction)
8397 {
8398   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8399   GtkContainer *container = GTK_CONTAINER (widget);
8400   GtkWidget *focus_child;
8401
8402   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8403     return FALSE;
8404
8405   focus_child = gtk_container_get_focus_child (container);
8406
8407   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8408   /* Case 1.  Headers currently have focus. */
8409   if (focus_child)
8410     {
8411       switch (direction)
8412         {
8413         case GTK_DIR_LEFT:
8414         case GTK_DIR_RIGHT:
8415           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8416           return TRUE;
8417         case GTK_DIR_TAB_BACKWARD:
8418         case GTK_DIR_UP:
8419           return FALSE;
8420         case GTK_DIR_TAB_FORWARD:
8421         case GTK_DIR_DOWN:
8422           gtk_widget_grab_focus (widget);
8423           return TRUE;
8424         default:
8425           g_assert_not_reached ();
8426           return FALSE;
8427         }
8428     }
8429
8430   /* Case 2. We don't have focus at all. */
8431   if (!gtk_widget_has_focus (widget))
8432     {
8433       gtk_widget_grab_focus (widget);
8434       return TRUE;
8435     }
8436
8437   /* Case 3. We have focus already. */
8438   if (direction == GTK_DIR_TAB_BACKWARD)
8439     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8440   else if (direction == GTK_DIR_TAB_FORWARD)
8441     return FALSE;
8442
8443   /* Other directions caught by the keybindings */
8444   gtk_widget_grab_focus (widget);
8445   return TRUE;
8446 }
8447
8448 static void
8449 gtk_tree_view_grab_focus (GtkWidget *widget)
8450 {
8451   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8452
8453   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8454 }
8455
8456 static void
8457 gtk_tree_view_style_updated (GtkWidget *widget)
8458 {
8459   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8460   GList *list;
8461   GtkTreeViewColumn *column;
8462
8463   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8464
8465   if (gtk_widget_get_realized (widget))
8466     {
8467       gtk_tree_view_ensure_background (tree_view);
8468
8469       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8470       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8471     }
8472
8473   gtk_widget_style_get (widget,
8474                         "expander-size", &tree_view->priv->expander_size,
8475                         NULL);
8476   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
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           tree_view->priv->focus_column = 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;
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 = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8524        list;
8525        list = (rtl ? list->prev : list->next))
8526     {
8527       GtkTreeViewColumn *column = list->data;
8528       GtkRegionFlags flags = 0;
8529
8530       if (!gtk_tree_view_column_get_visible (column))
8531         continue;
8532
8533       n_col++;
8534
8535       if (gtk_tree_view_column_get_widget (column) != child &&
8536           gtk_tree_view_column_get_button (column) != child)
8537         continue;
8538
8539       if ((n_col % 2) == 0)
8540         flags |= GTK_REGION_EVEN;
8541       else
8542         flags |= GTK_REGION_ODD;
8543
8544       if (n_col == 1)
8545         flags |= GTK_REGION_FIRST;
8546
8547       if ((rtl && !list->prev) ||
8548           (!rtl && !list->next))
8549         flags |= GTK_REGION_LAST;
8550
8551       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8552       break;
8553     }
8554
8555   gtk_widget_path_append_for_widget (path, child);
8556
8557   return path;
8558 }
8559
8560 static gboolean
8561 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8562                                 GtkMovementStep    step,
8563                                 gint               count)
8564 {
8565   GdkModifierType state;
8566
8567   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8568   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8569                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8570                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8571                         step == GTK_MOVEMENT_PAGES ||
8572                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8573
8574   if (tree_view->priv->tree == NULL)
8575     return FALSE;
8576   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8577     return FALSE;
8578
8579   gtk_tree_view_stop_editing (tree_view, FALSE);
8580   tree_view->priv->draw_keyfocus = TRUE;
8581   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8582
8583   if (gtk_get_current_event_state (&state))
8584     {
8585       GdkModifierType extend_mod_mask;
8586       GdkModifierType modify_mod_mask;
8587
8588       extend_mod_mask =
8589         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8590                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8591
8592       modify_mod_mask =
8593         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8594                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8595
8596       if ((state & modify_mod_mask) == modify_mod_mask)
8597         tree_view->priv->modify_selection_pressed = TRUE;
8598       if ((state & extend_mod_mask) == extend_mod_mask)
8599         tree_view->priv->extend_selection_pressed = TRUE;
8600     }
8601   /* else we assume not pressed */
8602
8603   switch (step)
8604     {
8605       /* currently we make no distinction.  When we go bi-di, we need to */
8606     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8607     case GTK_MOVEMENT_VISUAL_POSITIONS:
8608       gtk_tree_view_move_cursor_left_right (tree_view, count);
8609       break;
8610     case GTK_MOVEMENT_DISPLAY_LINES:
8611       gtk_tree_view_move_cursor_up_down (tree_view, count);
8612       break;
8613     case GTK_MOVEMENT_PAGES:
8614       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8615       break;
8616     case GTK_MOVEMENT_BUFFER_ENDS:
8617       gtk_tree_view_move_cursor_start_end (tree_view, count);
8618       break;
8619     default:
8620       g_assert_not_reached ();
8621     }
8622
8623   tree_view->priv->modify_selection_pressed = FALSE;
8624   tree_view->priv->extend_selection_pressed = FALSE;
8625
8626   return TRUE;
8627 }
8628
8629 static void
8630 gtk_tree_view_put (GtkTreeView *tree_view,
8631                    GtkWidget   *child_widget,
8632                    /* in bin_window coordinates */
8633                    gint         x,
8634                    gint         y,
8635                    gint         width,
8636                    gint         height)
8637 {
8638   GtkTreeViewChild *child;
8639
8640   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8641   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8642
8643   child = g_slice_new (GtkTreeViewChild);
8644
8645   child->widget = child_widget;
8646   child->x = x;
8647   child->y = y;
8648   child->width = width;
8649   child->height = height;
8650
8651   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8652
8653   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8654     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8655
8656   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8657 }
8658
8659 void
8660 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8661                                   GtkWidget   *widget,
8662                                   /* in tree coordinates */
8663                                   gint         x,
8664                                   gint         y,
8665                                   gint         width,
8666                                   gint         height)
8667 {
8668   GtkTreeViewChild *child = NULL;
8669   GList *list;
8670   GdkRectangle allocation;
8671
8672   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8673   g_return_if_fail (GTK_IS_WIDGET (widget));
8674
8675   for (list = tree_view->priv->children; list; list = list->next)
8676     {
8677       if (((GtkTreeViewChild *)list->data)->widget == widget)
8678         {
8679           child = list->data;
8680           break;
8681         }
8682     }
8683   if (child == NULL)
8684     return;
8685
8686   allocation.x = child->x = x;
8687   allocation.y = child->y = y;
8688   allocation.width = child->width = width;
8689   allocation.height = child->height = height;
8690
8691   if (gtk_widget_get_realized (widget))
8692     gtk_widget_size_allocate (widget, &allocation);
8693 }
8694
8695
8696 /* TreeModel Callbacks
8697  */
8698
8699 static void
8700 gtk_tree_view_row_changed (GtkTreeModel *model,
8701                            GtkTreePath  *path,
8702                            GtkTreeIter  *iter,
8703                            gpointer      data)
8704 {
8705   GtkTreeView *tree_view = (GtkTreeView *)data;
8706   GtkRBTree *tree;
8707   GtkRBNode *node;
8708   gboolean free_path = FALSE;
8709   GList *list;
8710   GtkTreePath *cursor_path;
8711
8712   g_return_if_fail (path != NULL || iter != NULL);
8713
8714   if (tree_view->priv->cursor_node != NULL)
8715     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
8716                                                   tree_view->priv->cursor_node);
8717   else
8718     cursor_path = NULL;
8719
8720   if (tree_view->priv->edited_column &&
8721       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8722     gtk_tree_view_stop_editing (tree_view, TRUE);
8723
8724   if (cursor_path != NULL)
8725     gtk_tree_path_free (cursor_path);
8726
8727   if (path == NULL)
8728     {
8729       path = gtk_tree_model_get_path (model, iter);
8730       free_path = TRUE;
8731     }
8732   else if (iter == NULL)
8733     gtk_tree_model_get_iter (model, iter, path);
8734
8735   if (_gtk_tree_view_find_node (tree_view,
8736                                 path,
8737                                 &tree,
8738                                 &node))
8739     /* We aren't actually showing the node */
8740     goto done;
8741
8742   if (tree == NULL)
8743     goto done;
8744
8745   if (tree_view->priv->fixed_height_mode
8746       && tree_view->priv->fixed_height >= 0)
8747     {
8748       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8749       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8750         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8751     }
8752   else
8753     {
8754       _gtk_rbtree_node_mark_invalid (tree, node);
8755       for (list = tree_view->priv->columns; list; list = list->next)
8756         {
8757           GtkTreeViewColumn *column;
8758
8759           column = list->data;
8760           if (!gtk_tree_view_column_get_visible (column))
8761             continue;
8762
8763           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8764             {
8765               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8766             }
8767         }
8768     }
8769
8770  done:
8771   if (!tree_view->priv->fixed_height_mode &&
8772       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8773     install_presize_handler (tree_view);
8774   if (free_path)
8775     gtk_tree_path_free (path);
8776 }
8777
8778 static void
8779 gtk_tree_view_row_inserted (GtkTreeModel *model,
8780                             GtkTreePath  *path,
8781                             GtkTreeIter  *iter,
8782                             gpointer      data)
8783 {
8784   GtkTreeView *tree_view = (GtkTreeView *) data;
8785   gint *indices;
8786   GtkRBTree *tree;
8787   GtkRBNode *tmpnode = NULL;
8788   gint depth;
8789   gint i = 0;
8790   gint height;
8791   gboolean free_path = FALSE;
8792   gboolean node_visible = TRUE;
8793
8794   g_return_if_fail (path != NULL || iter != NULL);
8795
8796   if (tree_view->priv->fixed_height_mode
8797       && tree_view->priv->fixed_height >= 0)
8798     height = tree_view->priv->fixed_height;
8799   else
8800     height = 0;
8801
8802   if (path == NULL)
8803     {
8804       path = gtk_tree_model_get_path (model, iter);
8805       free_path = TRUE;
8806     }
8807   else if (iter == NULL)
8808     gtk_tree_model_get_iter (model, iter, path);
8809
8810   if (tree_view->priv->tree == NULL)
8811     tree_view->priv->tree = _gtk_rbtree_new ();
8812
8813   tree = tree_view->priv->tree;
8814
8815   /* Update all row-references */
8816   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8817   depth = gtk_tree_path_get_depth (path);
8818   indices = gtk_tree_path_get_indices (path);
8819
8820   /* First, find the parent tree */
8821   while (i < depth - 1)
8822     {
8823       if (tree == NULL)
8824         {
8825           /* We aren't showing the node */
8826           node_visible = FALSE;
8827           goto done;
8828         }
8829
8830       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8831       if (tmpnode == NULL)
8832         {
8833           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8834                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8835                      "before the parent was inserted.");
8836           goto done;
8837         }
8838       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8839         {
8840           /* FIXME enforce correct behavior on model, probably */
8841           /* In theory, the model should have emitted has_child_toggled here.  We
8842            * try to catch it anyway, just to be safe, in case the model hasn't.
8843            */
8844           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8845           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8846           gtk_tree_path_free (tmppath);
8847           goto done;
8848         }
8849
8850       tree = tmpnode->children;
8851       i++;
8852     }
8853
8854   if (tree == NULL)
8855     {
8856       node_visible = FALSE;
8857       goto done;
8858     }
8859
8860   /* ref the node */
8861   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8862   if (indices[depth - 1] == 0)
8863     {
8864       tmpnode = _gtk_rbtree_find_count (tree, 1);
8865       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8866     }
8867   else
8868     {
8869       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8870       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8871     }
8872
8873  done:
8874   if (height > 0)
8875     {
8876       if (tree)
8877         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8878
8879       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8880         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8881       else
8882         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8883     }
8884   else
8885     install_presize_handler (tree_view);
8886   if (free_path)
8887     gtk_tree_path_free (path);
8888 }
8889
8890 static void
8891 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8892                                      GtkTreePath  *path,
8893                                      GtkTreeIter  *iter,
8894                                      gpointer      data)
8895 {
8896   GtkTreeView *tree_view = (GtkTreeView *)data;
8897   GtkTreeIter real_iter;
8898   gboolean has_child;
8899   GtkRBTree *tree;
8900   GtkRBNode *node;
8901   gboolean free_path = FALSE;
8902
8903   g_return_if_fail (path != NULL || iter != NULL);
8904
8905   if (iter)
8906     real_iter = *iter;
8907
8908   if (path == NULL)
8909     {
8910       path = gtk_tree_model_get_path (model, iter);
8911       free_path = TRUE;
8912     }
8913   else if (iter == NULL)
8914     gtk_tree_model_get_iter (model, &real_iter, path);
8915
8916   if (_gtk_tree_view_find_node (tree_view,
8917                                 path,
8918                                 &tree,
8919                                 &node))
8920     /* We aren't actually showing the node */
8921     goto done;
8922
8923   if (tree == NULL)
8924     goto done;
8925
8926   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8927   /* Sanity check.
8928    */
8929   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8930     goto done;
8931
8932   if (has_child)
8933     {
8934       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8935       _gtk_tree_view_accessible_add_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8936     }
8937   else
8938     {
8939       GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8940       _gtk_tree_view_accessible_remove_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8941     }
8942
8943   if (has_child && tree_view->priv->is_list)
8944     {
8945       tree_view->priv->is_list = FALSE;
8946       if (tree_view->priv->show_expanders)
8947         {
8948           GList *list;
8949
8950           for (list = tree_view->priv->columns; list; list = list->next)
8951             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8952               {
8953                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8954                 break;
8955               }
8956         }
8957       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8958     }
8959   else
8960     {
8961       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8962     }
8963
8964  done:
8965   if (free_path)
8966     gtk_tree_path_free (path);
8967 }
8968
8969 static void
8970 count_children_helper (GtkRBTree *tree,
8971                        GtkRBNode *node,
8972                        gpointer   data)
8973 {
8974   if (node->children)
8975     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8976   (*((gint *)data))++;
8977 }
8978
8979 static void
8980 check_selection_helper (GtkRBTree *tree,
8981                         GtkRBNode *node,
8982                         gpointer   data)
8983 {
8984   gint *value = (gint *)data;
8985
8986   *value |= GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8987
8988   if (node->children && !*value)
8989     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8990 }
8991
8992 static void
8993 gtk_tree_view_row_deleted (GtkTreeModel *model,
8994                            GtkTreePath  *path,
8995                            gpointer      data)
8996 {
8997   GtkTreeView *tree_view = (GtkTreeView *)data;
8998   GtkRBTree *tree;
8999   GtkRBNode *node;
9000   GList *list;
9001   gboolean selection_changed = FALSE, cursor_changed = FALSE;
9002   GtkRBTree *cursor_tree = NULL;
9003   GtkRBNode *cursor_node = NULL;
9004   GtkStyleContext *context;
9005
9006   g_return_if_fail (path != NULL);
9007
9008   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9009
9010   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9011     return;
9012
9013   if (tree == NULL)
9014     return;
9015
9016   /* check if the selection has been changed */
9017   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9018                         check_selection_helper, &selection_changed);
9019
9020   for (list = tree_view->priv->columns; list; list = list->next)
9021     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9022         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9023       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9024
9025   /* Ensure we don't have a dangling pointer to a dead node */
9026   ensure_unprelighted (tree_view);
9027
9028   /* Cancel editting if we've started */
9029   gtk_tree_view_stop_editing (tree_view, TRUE);
9030
9031   /* If the cursor row got deleted, move the cursor to the next row */
9032   if (tree_view->priv->cursor_node &&
9033       (tree_view->priv->cursor_node == node ||
9034        (node->children &&  _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree))))
9035     {
9036       GtkTreePath *cursor_path;
9037
9038       cursor_tree = tree;
9039       cursor_node = _gtk_rbtree_next (tree, node);
9040       /* find the first node that is not going to be deleted */
9041       while (cursor_node == NULL && cursor_tree->parent_tree)
9042         {
9043           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9044                                           cursor_tree->parent_node);
9045           cursor_tree = cursor_tree->parent_tree;
9046         }
9047
9048       if (cursor_node != NULL)
9049         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9050       else
9051         cursor_path = NULL;
9052
9053       if (cursor_path == NULL ||
9054           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9055                                          &cursor_tree, &cursor_node))
9056         {
9057           /* It looks like we reached the end of the view without finding
9058            * a focusable row.  We will step backwards to find the last
9059            * focusable row.
9060            */
9061           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9062           if (cursor_node)
9063             {
9064               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9065               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9066                                                  &cursor_tree, &cursor_node))
9067                 cursor_node = NULL;
9068               gtk_tree_path_free (cursor_path);
9069             }
9070         }
9071       else if (cursor_path)
9072         gtk_tree_path_free (cursor_path);
9073
9074       cursor_changed = TRUE;
9075     }
9076
9077   if (tree_view->priv->destroy_count_func)
9078     {
9079       gint child_count = 0;
9080       if (node->children)
9081         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9082       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9083     }
9084
9085   if (tree->root->count == 1)
9086     {
9087       if (tree_view->priv->tree == tree)
9088         tree_view->priv->tree = NULL;
9089
9090       _gtk_tree_view_accessible_remove_state (tree_view,
9091                                               tree->parent_tree, tree->parent_node,
9092                                               GTK_CELL_RENDERER_EXPANDED);
9093       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9094       _gtk_rbtree_remove (tree);
9095     }
9096   else
9097     {
9098       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9099       _gtk_rbtree_remove_node (tree, node);
9100     }
9101
9102   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9103     {
9104       gtk_tree_row_reference_free (tree_view->priv->top_row);
9105       tree_view->priv->top_row = NULL;
9106     }
9107
9108   /* Cancel any ongoing animation happening within the row */
9109   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9110   gtk_style_context_cancel_animations (context, node);
9111
9112   install_scroll_sync_handler (tree_view);
9113
9114   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9115
9116   if (cursor_changed)
9117     {
9118       if (cursor_node)
9119         {
9120           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9121           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9122           gtk_tree_path_free (cursor_path);
9123         }
9124       else
9125         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9126     }
9127   if (selection_changed)
9128     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9129 }
9130
9131 static void
9132 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9133                               GtkTreePath  *parent,
9134                               GtkTreeIter  *iter,
9135                               gint         *new_order,
9136                               gpointer      data)
9137 {
9138   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9139   GtkRBTree *tree;
9140   GtkRBNode *node;
9141   gint len;
9142
9143   len = gtk_tree_model_iter_n_children (model, iter);
9144
9145   if (len < 2)
9146     return;
9147
9148   gtk_tree_row_reference_reordered (G_OBJECT (data),
9149                                     parent,
9150                                     iter,
9151                                     new_order);
9152
9153   if (_gtk_tree_view_find_node (tree_view,
9154                                 parent,
9155                                 &tree,
9156                                 &node))
9157     return;
9158
9159   /* We need to special case the parent path */
9160   if (tree == NULL)
9161     tree = tree_view->priv->tree;
9162   else
9163     tree = node->children;
9164
9165   if (tree == NULL)
9166     return;
9167
9168   if (tree_view->priv->edited_column)
9169     gtk_tree_view_stop_editing (tree_view, TRUE);
9170
9171   /* we need to be unprelighted */
9172   ensure_unprelighted (tree_view);
9173
9174   _gtk_rbtree_reorder (tree, new_order, len);
9175
9176   _gtk_tree_view_accessible_reorder (tree_view);
9177
9178   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9179
9180   gtk_tree_view_dy_to_top_row (tree_view);
9181 }
9182
9183
9184 /* Internal tree functions
9185  */
9186
9187
9188 static void
9189 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9190                                      GtkRBTree         *tree,
9191                                      GtkTreeViewColumn *column,
9192                                      gint              *x1,
9193                                      gint              *x2)
9194 {
9195   GtkTreeViewColumn *tmp_column = NULL;
9196   gint total_width;
9197   GList *list;
9198   gboolean rtl;
9199
9200   if (x1)
9201     *x1 = 0;
9202
9203   if (x2)
9204     *x2 = 0;
9205
9206   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9207
9208   total_width = 0;
9209   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9210        list;
9211        list = (rtl ? list->prev : list->next))
9212     {
9213       tmp_column = list->data;
9214
9215       if (tmp_column == column)
9216         break;
9217
9218       if (gtk_tree_view_column_get_visible (tmp_column))
9219         total_width += gtk_tree_view_column_get_width (tmp_column);
9220     }
9221
9222   if (tmp_column != column)
9223     {
9224       g_warning (G_STRLOC": passed-in column isn't in the tree");
9225       return;
9226     }
9227
9228   if (x1)
9229     *x1 = total_width;
9230
9231   if (x2)
9232     {
9233       if (gtk_tree_view_column_get_visible (column))
9234         *x2 = total_width + gtk_tree_view_column_get_width (column);
9235       else
9236         *x2 = total_width; /* width of 0 */
9237     }
9238 }
9239
9240 static void
9241 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9242                                 GtkRBTree   *tree,
9243                                 gint        *x1,
9244                                 gint        *x2)
9245 {
9246   gint x_offset = 0;
9247   GList *list;
9248   GtkTreeViewColumn *tmp_column = NULL;
9249   gint total_width;
9250   gboolean indent_expanders;
9251   gboolean rtl;
9252
9253   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9254
9255   total_width = 0;
9256   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9257        list;
9258        list = (rtl ? list->prev : list->next))
9259     {
9260       tmp_column = list->data;
9261
9262       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9263         {
9264           if (rtl)
9265             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9266           else
9267             x_offset = total_width;
9268           break;
9269         }
9270
9271       if (gtk_tree_view_column_get_visible (tmp_column))
9272         total_width += gtk_tree_view_column_get_width (tmp_column);
9273     }
9274
9275   gtk_widget_style_get (GTK_WIDGET (tree_view),
9276                         "indent-expanders", &indent_expanders,
9277                         NULL);
9278
9279   if (indent_expanders)
9280     {
9281       if (rtl)
9282         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9283       else
9284         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9285     }
9286
9287   *x1 = x_offset;
9288
9289   if (tmp_column &&
9290       gtk_tree_view_column_get_visible (tmp_column))
9291     /* +1 because x2 isn't included in the range. */
9292     *x2 = *x1 + tree_view->priv->expander_size + 1;
9293   else
9294     *x2 = *x1;
9295 }
9296
9297 static void
9298 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9299                           GtkRBTree   *tree,
9300                           GtkTreeIter *iter,
9301                           gint         depth,
9302                           gboolean     recurse)
9303 {
9304   GtkRBNode *temp = NULL;
9305   GtkTreePath *path = NULL;
9306
9307   do
9308     {
9309       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9310       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9311
9312       if (tree_view->priv->fixed_height > 0)
9313         {
9314           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9315             {
9316               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9317               _gtk_rbtree_node_mark_valid (tree, temp);
9318             }
9319         }
9320
9321       if (tree_view->priv->is_list)
9322         continue;
9323
9324       if (recurse)
9325         {
9326           GtkTreeIter child;
9327
9328           if (!path)
9329             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9330           else
9331             gtk_tree_path_next (path);
9332
9333           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9334             {
9335               gboolean expand;
9336
9337               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9338
9339               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9340                   && !expand)
9341                 {
9342                   temp->children = _gtk_rbtree_new ();
9343                   temp->children->parent_tree = tree;
9344                   temp->children->parent_node = temp;
9345                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9346                 }
9347             }
9348         }
9349
9350       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9351         {
9352           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9353             temp->flags ^= GTK_RBNODE_IS_PARENT;
9354         }
9355     }
9356   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9357
9358   if (path)
9359     gtk_tree_path_free (path);
9360 }
9361
9362 /* Make sure the node is visible vertically */
9363 static void
9364 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9365                                   GtkRBTree   *tree,
9366                                   GtkRBNode   *node)
9367 {
9368   gint node_dy, height;
9369   GtkTreePath *path = NULL;
9370
9371   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9372     return;
9373
9374   /* just return if the node is visible, avoiding a costly expose */
9375   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9376   height = gtk_tree_view_get_row_height (tree_view, node);
9377   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9378       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9379       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9380                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9381     return;
9382
9383   path = _gtk_tree_path_new_from_rbtree (tree, node);
9384   if (path)
9385     {
9386       /* We process updates because we want to clear old selected items when we scroll.
9387        * if this is removed, we get a "selection streak" at the bottom. */
9388       gtk_tree_view_bin_process_updates (tree_view);
9389
9390       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9391       gtk_tree_path_free (path);
9392     }
9393 }
9394
9395 static void
9396 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9397                                     GtkTreeViewColumn *column,
9398                                     gboolean           focus_to_cell)
9399 {
9400   GtkAllocation allocation;
9401   gint x, width;
9402
9403   if (column == NULL)
9404     return;
9405
9406   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9407   x = allocation.x;
9408   width = allocation.width;
9409
9410   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9411     {
9412       /* The column is larger than the horizontal page size.  If the
9413        * column has cells which can be focussed individually, then we make
9414        * sure the cell which gets focus is fully visible (if even the
9415        * focus cell is bigger than the page size, we make sure the
9416        * left-hand side of the cell is visible).
9417        *
9418        * If the column does not have an activatable cell, we
9419        * make sure the left-hand side of the column is visible.
9420        */
9421
9422       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9423         {
9424           GtkCellArea *cell_area;
9425           GtkCellRenderer *focus_cell;
9426
9427           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9428           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9429
9430           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9431                                                       &x, &width))
9432             {
9433               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9434                 {
9435                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9436                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9437                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9438                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9439                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9440                 }
9441             }
9442         }
9443
9444       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9445     }
9446   else
9447     {
9448       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9449           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9450                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9451       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9452         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9453   }
9454 }
9455
9456 /* This function could be more efficient.  I'll optimize it if profiling seems
9457  * to imply that it is important */
9458 GtkTreePath *
9459 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9460                                 GtkRBNode   *node)
9461 {
9462   GtkTreePath *path;
9463   GtkRBTree *tmp_tree;
9464   GtkRBNode *tmp_node, *last;
9465   gint count;
9466
9467   path = gtk_tree_path_new ();
9468
9469   g_return_val_if_fail (node != NULL, path);
9470
9471   count = 1 + node->left->count;
9472
9473   last = node;
9474   tmp_node = node->parent;
9475   tmp_tree = tree;
9476   while (tmp_tree)
9477     {
9478       while (!_gtk_rbtree_is_nil (tmp_node))
9479         {
9480           if (tmp_node->right == last)
9481             count += 1 + tmp_node->left->count;
9482           last = tmp_node;
9483           tmp_node = tmp_node->parent;
9484         }
9485       gtk_tree_path_prepend_index (path, count - 1);
9486       last = tmp_tree->parent_node;
9487       tmp_tree = tmp_tree->parent_tree;
9488       if (last)
9489         {
9490           count = 1 + last->left->count;
9491           tmp_node = last->parent;
9492         }
9493     }
9494   return path;
9495 }
9496
9497 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9498  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9499  * both set to NULL.
9500  */
9501 gboolean
9502 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9503                           GtkTreePath  *path,
9504                           GtkRBTree   **tree,
9505                           GtkRBNode   **node)
9506 {
9507   GtkRBNode *tmpnode = NULL;
9508   GtkRBTree *tmptree = tree_view->priv->tree;
9509   gint *indices = gtk_tree_path_get_indices (path);
9510   gint depth = gtk_tree_path_get_depth (path);
9511   gint i = 0;
9512
9513   *node = NULL;
9514   *tree = NULL;
9515
9516   if (depth == 0 || tmptree == NULL)
9517     return FALSE;
9518   do
9519     {
9520       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9521       ++i;
9522       if (tmpnode == NULL)
9523         {
9524           *tree = NULL;
9525           *node = NULL;
9526           return FALSE;
9527         }
9528       if (i >= depth)
9529         {
9530           *tree = tmptree;
9531           *node = tmpnode;
9532           return FALSE;
9533         }
9534       *tree = tmptree;
9535       *node = tmpnode;
9536       tmptree = tmpnode->children;
9537       if (tmptree == NULL)
9538         return TRUE;
9539     }
9540   while (1);
9541 }
9542
9543 static gboolean
9544 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9545                                   GtkTreeViewColumn *column)
9546 {
9547   GList *list;
9548
9549   if (tree_view->priv->is_list)
9550     return FALSE;
9551
9552   if (tree_view->priv->expander_column != NULL)
9553     {
9554       if (tree_view->priv->expander_column == column)
9555         return TRUE;
9556       return FALSE;
9557     }
9558   else
9559     {
9560       for (list = tree_view->priv->columns;
9561            list;
9562            list = list->next)
9563         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9564           break;
9565       if (list && list->data == column)
9566         return TRUE;
9567     }
9568   return FALSE;
9569 }
9570
9571 static inline gboolean
9572 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9573 {
9574   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9575     return TRUE;
9576   /* else */
9577   return FALSE;
9578 }
9579
9580 static void
9581 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9582                                 guint           keyval,
9583                                 guint           modmask,
9584                                 gboolean        add_shifted_binding,
9585                                 GtkMovementStep step,
9586                                 gint            count)
9587 {
9588
9589   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9590                                 "move-cursor", 2,
9591                                 G_TYPE_ENUM, step,
9592                                 G_TYPE_INT, count);
9593
9594   if (add_shifted_binding)
9595     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9596                                   "move-cursor", 2,
9597                                   G_TYPE_ENUM, step,
9598                                   G_TYPE_INT, count);
9599
9600   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9601    return;
9602
9603   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9604                                 "move-cursor", 2,
9605                                 G_TYPE_ENUM, step,
9606                                 G_TYPE_INT, count);
9607
9608   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9609                                 "move-cursor", 2,
9610                                 G_TYPE_ENUM, step,
9611                                 G_TYPE_INT, count);
9612 }
9613
9614 static gint
9615 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9616                                  GtkTreeIter  *iter,
9617                                  GtkRBTree    *tree,
9618                                  GtkRBNode    *node)
9619 {
9620   gint retval = FALSE;
9621   do
9622     {
9623       g_return_val_if_fail (node != NULL, FALSE);
9624
9625       if (node->children)
9626         {
9627           GtkTreeIter child;
9628           GtkRBTree *new_tree;
9629           GtkRBNode *new_node;
9630
9631           new_tree = node->children;
9632           new_node = _gtk_rbtree_first (new_tree);
9633
9634           if (!gtk_tree_model_iter_children (model, &child, iter))
9635             return FALSE;
9636
9637           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9638         }
9639
9640       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9641         retval = TRUE;
9642       gtk_tree_model_unref_node (model, iter);
9643       node = _gtk_rbtree_next (tree, node);
9644     }
9645   while (gtk_tree_model_iter_next (model, iter));
9646
9647   return retval;
9648 }
9649
9650 static gint
9651 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9652                                               GtkRBTree   *tree)
9653 {
9654   GtkTreeIter iter;
9655   GtkTreePath *path;
9656   GtkRBNode *node;
9657   gint retval;
9658
9659   if (!tree)
9660     return FALSE;
9661
9662   node = _gtk_rbtree_first (tree);
9663
9664   g_return_val_if_fail (node != NULL, FALSE);
9665   path = _gtk_tree_path_new_from_rbtree (tree, node);
9666   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9667                            &iter, path);
9668   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9669   gtk_tree_path_free (path);
9670
9671   return retval;
9672 }
9673
9674 static void
9675 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9676                                     GtkTreeViewColumn *column)
9677 {
9678   GtkTreeViewColumn *left_column;
9679   GtkTreeViewColumn *cur_column = NULL;
9680   GtkTreeViewColumnReorder *reorder;
9681   gboolean rtl;
9682   GList *tmp_list;
9683   gint left;
9684
9685   /* We want to precalculate the motion list such that we know what column slots
9686    * are available.
9687    */
9688   left_column = NULL;
9689   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9690
9691   /* First, identify all possible drop spots */
9692   if (rtl)
9693     tmp_list = g_list_last (tree_view->priv->columns);
9694   else
9695     tmp_list = g_list_first (tree_view->priv->columns);
9696
9697   while (tmp_list)
9698     {
9699       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9700       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9701
9702       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9703         continue;
9704
9705       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9706       if (left_column != column && cur_column != column &&
9707           tree_view->priv->column_drop_func &&
9708           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9709         {
9710           left_column = cur_column;
9711           continue;
9712         }
9713       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9714       reorder->left_column = left_column;
9715       left_column = reorder->right_column = cur_column;
9716
9717       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9718     }
9719
9720   /* Add the last one */
9721   if (tree_view->priv->column_drop_func == NULL ||
9722       ((left_column != column) &&
9723        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9724     {
9725       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9726       reorder->left_column = left_column;
9727       reorder->right_column = NULL;
9728       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9729     }
9730
9731   /* We quickly check to see if it even makes sense to reorder columns. */
9732   /* If there is nothing that can be moved, then we return */
9733
9734   if (tree_view->priv->column_drag_info == NULL)
9735     return;
9736
9737   /* We know there are always 2 slots possbile, as you can always return column. */
9738   /* If that's all there is, return */
9739   if (tree_view->priv->column_drag_info->next == NULL ||
9740       (tree_view->priv->column_drag_info->next->next == NULL &&
9741        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9742        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9743     {
9744       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9745         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9746       g_list_free (tree_view->priv->column_drag_info);
9747       tree_view->priv->column_drag_info = NULL;
9748       return;
9749     }
9750   /* We fill in the ranges for the columns, now that we've isolated them */
9751   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9752
9753   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9754     {
9755       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9756
9757       reorder->left_align = left;
9758       if (tmp_list->next != NULL)
9759         {
9760           GtkAllocation right_allocation, left_allocation;
9761           GtkWidget    *left_button, *right_button;
9762
9763           g_assert (tmp_list->next->data);
9764
9765           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9766           left_button  = gtk_tree_view_column_get_button
9767             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9768
9769           gtk_widget_get_allocation (right_button, &right_allocation);
9770           gtk_widget_get_allocation (left_button, &left_allocation);
9771           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9772         }
9773       else
9774         {
9775           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9776                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9777         }
9778     }
9779 }
9780
9781 void
9782 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9783                                   GtkTreeViewColumn *column,
9784                                   GdkDevice         *device)
9785 {
9786   GdkEvent *send_event;
9787   GtkAllocation allocation;
9788   GtkAllocation button_allocation;
9789   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9790   GtkWidget *button;
9791   GdkDevice *pointer, *keyboard;
9792
9793   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9794   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9795
9796   gtk_tree_view_set_column_drag_info (tree_view, column);
9797
9798   if (tree_view->priv->column_drag_info == NULL)
9799     return;
9800
9801   button = gtk_tree_view_column_get_button (column);
9802
9803   if (tree_view->priv->drag_window == NULL)
9804     {
9805       GdkWindowAttr attributes;
9806       guint attributes_mask;
9807
9808       gtk_widget_get_allocation (button, &button_allocation);
9809
9810       attributes.window_type = GDK_WINDOW_CHILD;
9811       attributes.wclass = GDK_INPUT_OUTPUT;
9812       attributes.x = button_allocation.x;
9813       attributes.y = 0;
9814       attributes.width = button_allocation.width;
9815       attributes.height = button_allocation.height;
9816       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9817       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9818       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9819
9820       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9821                                                      &attributes,
9822                                                      attributes_mask);
9823       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9824     }
9825
9826   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9827     {
9828       keyboard = device;
9829       pointer = gdk_device_get_associated_device (device);
9830     }
9831   else
9832     {
9833       pointer = device;
9834       keyboard = gdk_device_get_associated_device (device);
9835     }
9836
9837   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9838   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9839
9840   gtk_grab_remove (button);
9841
9842   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9843   send_event->crossing.send_event = TRUE;
9844   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9845   send_event->crossing.subwindow = NULL;
9846   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9847   send_event->crossing.time = GDK_CURRENT_TIME;
9848   gdk_event_set_device (send_event, device);
9849
9850   gtk_propagate_event (button, send_event);
9851   gdk_event_free (send_event);
9852
9853   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9854   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9855   send_event->button.send_event = TRUE;
9856   send_event->button.time = GDK_CURRENT_TIME;
9857   send_event->button.x = -1;
9858   send_event->button.y = -1;
9859   send_event->button.axes = NULL;
9860   send_event->button.state = 0;
9861   send_event->button.button = 1;
9862   send_event->button.x_root = 0;
9863   send_event->button.y_root = 0;
9864   gdk_event_set_device (send_event, device);
9865
9866   gtk_propagate_event (button, send_event);
9867   gdk_event_free (send_event);
9868
9869   /* Kids, don't try this at home */
9870   g_object_ref (button);
9871   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9872   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9873   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9874   g_object_unref (button);
9875
9876   gtk_widget_get_allocation (button, &button_allocation);
9877   tree_view->priv->drag_column_x = button_allocation.x;
9878   allocation = button_allocation;
9879   allocation.x = 0;
9880   gtk_widget_size_allocate (button, &allocation);
9881   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9882
9883   tree_view->priv->drag_column = column;
9884   gdk_window_show (tree_view->priv->drag_window);
9885
9886   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9887   while (gtk_events_pending ())
9888     gtk_main_iteration ();
9889
9890   tree_view->priv->in_column_drag = TRUE;
9891
9892   gdk_device_grab (pointer,
9893                    tree_view->priv->drag_window,
9894                    GDK_OWNERSHIP_NONE,
9895                    FALSE,
9896                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9897                    NULL,
9898                    GDK_CURRENT_TIME);
9899   gdk_device_grab (keyboard,
9900                    tree_view->priv->drag_window,
9901                    GDK_OWNERSHIP_NONE,
9902                    FALSE,
9903                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9904                    NULL,
9905                    GDK_CURRENT_TIME);
9906 }
9907
9908 static void
9909 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9910                                 GtkRBTree          *tree,
9911                                 GtkRBNode          *node)
9912 {
9913   GtkAllocation allocation;
9914   GdkRectangle rect;
9915
9916   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9917     return;
9918
9919   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9920   rect.x = 0;
9921   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9922
9923   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9924   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9925
9926   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9927 }
9928
9929 void
9930 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9931                                 GtkRBTree          *tree,
9932                                 GtkRBNode          *node,
9933                                 const GdkRectangle *clip_rect)
9934 {
9935   GtkAllocation allocation;
9936   GdkRectangle rect;
9937
9938   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9939     return;
9940
9941   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9942   rect.x = 0;
9943   rect.width = MAX (tree_view->priv->width, allocation.width);
9944
9945   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9946   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9947
9948   if (clip_rect)
9949     {
9950       GdkRectangle new_rect;
9951
9952       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9953
9954       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9955     }
9956   else
9957     {
9958       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9959     }
9960 }
9961
9962 static inline gint
9963 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9964 {
9965   if (tree_view->priv->headers_visible)
9966     return tree_view->priv->header_height;
9967   /* else */
9968   return 0;
9969 }
9970
9971 gint
9972 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9973 {
9974   return tree_view->priv->header_height;
9975 }
9976
9977 void
9978 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9979                                        GtkTreeViewRowSeparatorFunc *func,
9980                                        gpointer                    *data)
9981 {
9982   *func = tree_view->priv->row_separator_func;
9983   *data = tree_view->priv->row_separator_data;
9984 }
9985
9986 GtkTreePath *
9987 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9988 {
9989   if (tree_view->priv->anchor)
9990     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9991
9992   return NULL;
9993 }
9994
9995 void
9996 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9997                                 GtkTreePath *anchor_path)
9998 {
9999   if (tree_view->priv->anchor)
10000     {
10001       gtk_tree_row_reference_free (tree_view->priv->anchor);
10002       tree_view->priv->anchor = NULL;
10003     }
10004
10005   if (anchor_path && tree_view->priv->model)
10006     tree_view->priv->anchor =
10007       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10008                                         tree_view->priv->model, anchor_path);
10009 }
10010
10011 GtkRBTree *
10012 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
10013 {
10014   return tree_view->priv->tree;
10015 }
10016
10017 GdkWindow *
10018 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10019 {
10020   return tree_view->priv->header_window;
10021 }
10022
10023 void
10024 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10025                                  GtkTreeViewColumn *column)
10026 {
10027   tree_view->priv->focus_column = column;
10028 }
10029
10030
10031 static void
10032 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10033                                GtkTreePath        *path,
10034                                const GdkRectangle *clip_rect)
10035 {
10036   GtkRBTree *tree = NULL;
10037   GtkRBNode *node = NULL;
10038
10039   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10040
10041   if (tree)
10042     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10043 }
10044
10045 /* x and y are the mouse position
10046  */
10047 static void
10048 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10049                           cairo_t     *cr,
10050                           GtkRBTree   *tree,
10051                           GtkRBNode   *node)
10052 {
10053   GdkRectangle area;
10054   GtkStateFlags state = 0;
10055   GtkStyleContext *context;
10056   GtkWidget *widget;
10057   gint x_offset = 0;
10058   gint x2;
10059   gint vertical_separator;
10060   gint expander_size;
10061   GtkCellRendererState flags;
10062
10063   widget = GTK_WIDGET (tree_view);
10064   context = gtk_widget_get_style_context (widget);
10065
10066   gtk_widget_style_get (widget,
10067                         "vertical-separator", &vertical_separator,
10068                         NULL);
10069   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10070
10071   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10072     return;
10073
10074   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10075
10076   area.x = x_offset;
10077   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10078                                                  vertical_separator);
10079   area.width = expander_size;
10080   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10081                                                     vertical_separator);
10082
10083   if (!gtk_widget_get_sensitive (widget))
10084     state |= GTK_STATE_FLAG_INSENSITIVE;
10085   else
10086     {
10087       flags = 0;
10088
10089       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10090         flags |= GTK_CELL_RENDERER_SELECTED;
10091
10092       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10093
10094       if (node == tree_view->priv->prelight_node &&
10095           tree_view->priv->arrow_prelit)
10096         state |= GTK_STATE_FLAG_PRELIGHT;
10097     }
10098
10099   if (node->children != NULL)
10100     state |= GTK_STATE_FLAG_ACTIVE;
10101
10102   gtk_style_context_save (context);
10103
10104   gtk_style_context_set_state (context, state);
10105   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10106
10107   gtk_style_context_push_animatable_region (context, node);
10108
10109   gtk_render_expander (context, cr,
10110                        area.x, area.y,
10111                        area.width, area.height);
10112
10113   gtk_style_context_pop_animatable_region (context);
10114   gtk_style_context_restore (context);
10115 }
10116
10117 static void
10118 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10119
10120 {
10121   GtkTreePath *cursor_path;
10122
10123   if ((tree_view->priv->tree == NULL) ||
10124       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10125     return;
10126
10127   cursor_path = NULL;
10128   if (tree_view->priv->cursor_node)
10129     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10130                                                   tree_view->priv->cursor_node);
10131
10132   if (cursor_path == NULL)
10133     {
10134       /* Consult the selection before defaulting to the
10135        * first focusable element
10136        */
10137       GList *selected_rows;
10138       GtkTreeModel *model;
10139       GtkTreeSelection *selection;
10140
10141       selection = gtk_tree_view_get_selection (tree_view);
10142       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10143
10144       if (selected_rows)
10145         {
10146           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10147           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10148           g_list_free (selected_rows);
10149         }
10150       else
10151         {
10152           cursor_path = gtk_tree_path_new_first ();
10153           search_first_focusable_path (tree_view, &cursor_path,
10154                                        TRUE, NULL, NULL);
10155         }
10156
10157       if (cursor_path)
10158         {
10159           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10160             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10161           else
10162             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10163         }
10164     }
10165
10166   if (cursor_path)
10167     {
10168       tree_view->priv->draw_keyfocus = TRUE;
10169
10170       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10171       gtk_tree_path_free (cursor_path);
10172
10173       if (tree_view->priv->focus_column == NULL)
10174         {
10175           GList *list;
10176           for (list = tree_view->priv->columns; list; list = list->next)
10177             {
10178               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10179                 {
10180                   GtkCellArea *cell_area;
10181
10182                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10183
10184                   /* This happens when the treeview initially grabs focus and there
10185                    * is no column in focus, here we explicitly focus into the first cell */
10186                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10187                   if (!gtk_cell_area_get_focus_cell (cell_area))
10188                     {
10189                       gboolean rtl;
10190
10191                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10192                       gtk_cell_area_focus (cell_area,
10193                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10194                     }
10195
10196                   break;
10197                 }
10198             }
10199         }
10200     }
10201 }
10202
10203 static void
10204 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10205                                    gint         count)
10206 {
10207   gint selection_count;
10208   GtkRBTree *new_cursor_tree = NULL;
10209   GtkRBNode *new_cursor_node = NULL;
10210   GtkTreePath *cursor_path = NULL;
10211   gboolean grab_focus = TRUE;
10212   gboolean selectable;
10213   GtkDirectionType direction;
10214   GtkCellArea *cell_area = NULL;
10215   GtkCellRenderer *last_focus_cell = NULL;
10216   GtkTreeIter iter;
10217
10218   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10219     return;
10220
10221   if (tree_view->priv->cursor_node == NULL)
10222     return;
10223
10224   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10225                                                 tree_view->priv->cursor_node);
10226
10227   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10228
10229   if (tree_view->priv->focus_column)
10230     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10231
10232   /* If focus stays in the area for this row, then just return for this round */
10233   if (cell_area && (count == -1 || count == 1) &&
10234       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10235     {
10236       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10237                                                tree_view->priv->model,
10238                                                &iter,
10239                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10240                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10241
10242       /* Save the last cell that had focus, if we hit the end of the view we'll give
10243        * focus back to it. */
10244       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10245
10246       /* If focus stays in the area, no need to change the cursor row */
10247       if (gtk_cell_area_focus (cell_area, direction))
10248         return;
10249     }
10250
10251   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10252   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10253                                                       tree_view->priv->cursor_node,
10254                                                       cursor_path);
10255
10256   if (selection_count == 0
10257       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10258       && !tree_view->priv->modify_selection_pressed
10259       && selectable)
10260     {
10261       /* Don't move the cursor, but just select the current node */
10262       new_cursor_tree = tree_view->priv->cursor_tree;
10263       new_cursor_node = tree_view->priv->cursor_node;
10264     }
10265   else
10266     {
10267       if (count == -1)
10268         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10269                                &new_cursor_tree, &new_cursor_node);
10270       else
10271         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10272                                &new_cursor_tree, &new_cursor_node);
10273     }
10274
10275   gtk_tree_path_free (cursor_path);
10276
10277   if (new_cursor_node)
10278     {
10279       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10280
10281       search_first_focusable_path (tree_view, &cursor_path,
10282                                    (count != -1),
10283                                    &new_cursor_tree,
10284                                    &new_cursor_node);
10285
10286       if (cursor_path)
10287         gtk_tree_path_free (cursor_path);
10288     }
10289
10290   /*
10291    * If the list has only one item and multi-selection is set then select
10292    * the row (if not yet selected).
10293    */
10294   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10295       new_cursor_node == NULL)
10296     {
10297       if (count == -1)
10298         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10299                                &new_cursor_tree, &new_cursor_node);
10300       else
10301         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10302                                &new_cursor_tree, &new_cursor_node);
10303
10304       if (new_cursor_node == NULL
10305           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10306         {
10307           new_cursor_node = tree_view->priv->cursor_node;
10308           new_cursor_tree = tree_view->priv->cursor_tree;
10309         }
10310       else
10311         {
10312           new_cursor_tree = NULL;
10313           new_cursor_node = NULL;
10314         }
10315     }
10316
10317   if (new_cursor_node)
10318     {
10319       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10320       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10321       gtk_tree_path_free (cursor_path);
10322
10323       /* Give focus to the area in the new row */
10324       if (cell_area)
10325         gtk_cell_area_focus (cell_area, direction);
10326     }
10327   else
10328     {
10329       gtk_tree_view_clamp_node_visible (tree_view,
10330                                         tree_view->priv->cursor_tree,
10331                                         tree_view->priv->cursor_node);
10332
10333       if (!tree_view->priv->extend_selection_pressed)
10334         {
10335           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10336                                           count < 0 ?
10337                                           GTK_DIR_UP : GTK_DIR_DOWN))
10338             {
10339               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10340
10341               if (toplevel)
10342                 gtk_widget_child_focus (toplevel,
10343                                         count < 0 ?
10344                                         GTK_DIR_TAB_BACKWARD :
10345                                         GTK_DIR_TAB_FORWARD);
10346
10347               grab_focus = FALSE;
10348             }
10349         }
10350       else
10351         {
10352           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10353         }
10354
10355       if (cell_area)
10356         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10357     }
10358
10359   if (grab_focus)
10360     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10361 }
10362
10363 static void
10364 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10365                                         gint         count)
10366 {
10367   GtkTreePath *old_cursor_path = NULL;
10368   GtkTreePath *cursor_path = NULL;
10369   GtkRBTree *start_cursor_tree = NULL;
10370   GtkRBNode *start_cursor_node = NULL;
10371   GtkRBTree *cursor_tree;
10372   GtkRBNode *cursor_node;
10373   gint y;
10374   gint window_y;
10375   gint vertical_separator;
10376
10377   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10378     return;
10379
10380   if (tree_view->priv->cursor_node == NULL)
10381     return;
10382
10383   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10384                                                     tree_view->priv->cursor_node);
10385
10386   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10387
10388   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10389   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10390   y += tree_view->priv->cursor_offset;
10391   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10392   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10393
10394   if (y >= tree_view->priv->height)
10395     y = tree_view->priv->height - 1;
10396
10397   tree_view->priv->cursor_offset =
10398     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10399                              &cursor_tree, &cursor_node);
10400
10401   if (cursor_tree == NULL)
10402     {
10403       /* FIXME: we lost the cursor.  Should we try to get one? */
10404       gtk_tree_path_free (old_cursor_path);
10405       return;
10406     }
10407
10408   if (tree_view->priv->cursor_offset
10409       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10410     {
10411       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10412                              &cursor_tree, &cursor_node);
10413       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10414     }
10415
10416   y -= tree_view->priv->cursor_offset;
10417   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10418
10419   start_cursor_tree = cursor_tree;
10420   start_cursor_node = cursor_node;
10421
10422   if (! search_first_focusable_path (tree_view, &cursor_path,
10423                                      (count != -1),
10424                                      &cursor_tree, &cursor_node))
10425     {
10426       /* It looks like we reached the end of the view without finding
10427        * a focusable row.  We will step backwards to find the last
10428        * focusable row.
10429        */
10430       cursor_tree = start_cursor_tree;
10431       cursor_node = start_cursor_node;
10432       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10433
10434       search_first_focusable_path (tree_view, &cursor_path,
10435                                    (count == -1),
10436                                    &cursor_tree, &cursor_node);
10437     }
10438
10439   if (!cursor_path)
10440     goto cleanup;
10441
10442   /* update y */
10443   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10444
10445   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10446
10447   y -= window_y;
10448   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10449   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10450   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10451
10452   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10453     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10454
10455   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10456
10457 cleanup:
10458   gtk_tree_path_free (old_cursor_path);
10459   gtk_tree_path_free (cursor_path);
10460 }
10461
10462 static void
10463 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10464                                       gint         count)
10465 {
10466   GtkTreePath *cursor_path = NULL;
10467   GtkTreeViewColumn *column;
10468   GtkTreeIter iter;
10469   GList *list;
10470   gboolean found_column = FALSE;
10471   gboolean rtl;
10472   GtkDirectionType direction;
10473   GtkCellArea     *cell_area;
10474   GtkCellRenderer *last_focus_cell = NULL;
10475   GtkCellArea     *last_focus_area = NULL;
10476
10477   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10478
10479   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10480     return;
10481
10482   if (tree_view->priv->cursor_node == NULL)
10483     return;
10484
10485   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10486                                                 tree_view->priv->cursor_node);
10487
10488   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10489     {
10490       gtk_tree_path_free (cursor_path);
10491       return;
10492     }
10493   gtk_tree_path_free (cursor_path);
10494
10495   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10496   if (tree_view->priv->focus_column)
10497     {
10498       /* Save the cell/area we are moving focus from, if moving the cursor
10499        * by one step hits the end we'll set focus back here */
10500       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10501       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10502
10503       for (; list; list = (rtl ? list->prev : list->next))
10504         {
10505           if (list->data == tree_view->priv->focus_column)
10506             break;
10507         }
10508     }
10509
10510   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10511
10512   while (list)
10513     {
10514       column = list->data;
10515       if (gtk_tree_view_column_get_visible (column) == FALSE)
10516         goto loop_end;
10517
10518       gtk_tree_view_column_cell_set_cell_data (column,
10519                                                tree_view->priv->model,
10520                                                &iter,
10521                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10522                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10523
10524       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10525       if (gtk_cell_area_focus (cell_area, direction))
10526         {
10527           tree_view->priv->focus_column = column;
10528           found_column = TRUE;
10529           break;
10530         }
10531
10532     loop_end:
10533       if (count == 1)
10534         list = rtl ? list->prev : list->next;
10535       else
10536         list = rtl ? list->next : list->prev;
10537     }
10538
10539   if (found_column)
10540     {
10541       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10542         _gtk_tree_view_queue_draw_node (tree_view,
10543                                         tree_view->priv->cursor_tree,
10544                                         tree_view->priv->cursor_node,
10545                                         NULL);
10546       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10547       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10548     }
10549   else
10550     {
10551       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10552
10553       if (last_focus_area)
10554         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10555     }
10556
10557   gtk_tree_view_clamp_column_visible (tree_view,
10558                                       tree_view->priv->focus_column, TRUE);
10559 }
10560
10561 static void
10562 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10563                                      gint         count)
10564 {
10565   GtkRBTree *cursor_tree;
10566   GtkRBNode *cursor_node;
10567   GtkTreePath *path;
10568   GtkTreePath *old_path;
10569
10570   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10571     return;
10572
10573   g_return_if_fail (tree_view->priv->tree != NULL);
10574
10575   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10576
10577   cursor_tree = tree_view->priv->tree;
10578
10579   if (count == -1)
10580     {
10581       cursor_node = _gtk_rbtree_first (cursor_tree);
10582
10583       /* Now go forward to find the first focusable row. */
10584       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10585       search_first_focusable_path (tree_view, &path,
10586                                    TRUE, &cursor_tree, &cursor_node);
10587     }
10588   else
10589     {
10590       cursor_node = cursor_tree->root;
10591
10592       do
10593         {
10594           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10595             cursor_node = cursor_node->right;
10596           if (cursor_node->children == NULL)
10597             break;
10598
10599           cursor_tree = cursor_node->children;
10600           cursor_node = cursor_tree->root;
10601         }
10602       while (1);
10603
10604       /* Now go backwards to find last focusable row. */
10605       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10606       search_first_focusable_path (tree_view, &path,
10607                                    FALSE, &cursor_tree, &cursor_node);
10608     }
10609
10610   if (!path)
10611     goto cleanup;
10612
10613   if (gtk_tree_path_compare (old_path, path))
10614     {
10615       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10616       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10617     }
10618   else
10619     {
10620       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10621     }
10622
10623 cleanup:
10624   gtk_tree_path_free (old_path);
10625   gtk_tree_path_free (path);
10626 }
10627
10628 static gboolean
10629 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10630 {
10631   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10632     return FALSE;
10633
10634   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10635     return FALSE;
10636
10637   gtk_tree_selection_select_all (tree_view->priv->selection);
10638
10639   return TRUE;
10640 }
10641
10642 static gboolean
10643 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10644 {
10645   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10646     return FALSE;
10647
10648   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10649     return FALSE;
10650
10651   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10652
10653   return TRUE;
10654 }
10655
10656 static gboolean
10657 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10658                                       gboolean     start_editing)
10659 {
10660   GtkRBTree *new_tree = NULL;
10661   GtkRBNode *new_node = NULL;
10662   GtkRBTree *cursor_tree = NULL;
10663   GtkRBNode *cursor_node = NULL;
10664   GtkTreePath *cursor_path = NULL;
10665   GtkTreeSelectMode mode = 0;
10666
10667   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10668     return FALSE;
10669
10670   if (tree_view->priv->cursor_node == NULL)
10671     return FALSE;
10672
10673   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10674                                                 tree_view->priv->cursor_node);
10675
10676   _gtk_tree_view_find_node (tree_view, cursor_path,
10677                             &cursor_tree, &cursor_node);
10678
10679   if (cursor_tree == NULL)
10680     {
10681       gtk_tree_path_free (cursor_path);
10682       return FALSE;
10683     }
10684
10685   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10686       tree_view->priv->focus_column)
10687     {
10688       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10689         {
10690           gtk_tree_path_free (cursor_path);
10691           return TRUE;
10692         }
10693     }
10694
10695   if (tree_view->priv->modify_selection_pressed)
10696     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10697   if (tree_view->priv->extend_selection_pressed)
10698     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10699
10700   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10701                                             cursor_node,
10702                                             cursor_tree,
10703                                             cursor_path,
10704                                             mode,
10705                                             FALSE);
10706
10707   /* We bail out if the original (tree, node) don't exist anymore after
10708    * handling the selection-changed callback.  We do return TRUE because
10709    * the key press has been handled at this point.
10710    */
10711   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10712
10713   if (cursor_tree != new_tree || cursor_node != new_node)
10714     return FALSE;
10715
10716   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10717
10718   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10719   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10720
10721   if (!tree_view->priv->extend_selection_pressed)
10722     gtk_tree_view_row_activated (tree_view, cursor_path,
10723                                  tree_view->priv->focus_column);
10724
10725   gtk_tree_path_free (cursor_path);
10726
10727   return TRUE;
10728 }
10729
10730 static gboolean
10731 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10732 {
10733   GtkRBTree *new_tree = NULL;
10734   GtkRBNode *new_node = NULL;
10735   GtkRBTree *cursor_tree = NULL;
10736   GtkRBNode *cursor_node = NULL;
10737   GtkTreePath *cursor_path = NULL;
10738
10739   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10740     return FALSE;
10741
10742   if (tree_view->priv->cursor_node == NULL)
10743     return FALSE;
10744
10745   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10746                                                 tree_view->priv->cursor_node);
10747
10748   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10749                                             cursor_node,
10750                                             cursor_tree,
10751                                             cursor_path,
10752                                             GTK_TREE_SELECT_MODE_TOGGLE,
10753                                             FALSE);
10754
10755   /* We bail out if the original (tree, node) don't exist anymore after
10756    * handling the selection-changed callback.  We do return TRUE because
10757    * the key press has been handled at this point.
10758    */
10759   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10760
10761   if (tree_view->priv->cursor_node != new_node)
10762     return FALSE;
10763
10764   gtk_tree_view_clamp_node_visible (tree_view,
10765                                     tree_view->priv->cursor_tree,
10766                                     tree_view->priv->cursor_node);
10767
10768   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10769   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10770   gtk_tree_path_free (cursor_path);
10771
10772   return TRUE;
10773 }
10774
10775 static gboolean
10776 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10777                                                gboolean     logical,
10778                                                gboolean     expand,
10779                                                gboolean     open_all)
10780 {
10781   GtkTreePath *cursor_path = NULL;
10782
10783   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10784     return FALSE;
10785
10786   if (tree_view->priv->cursor_node == NULL)
10787     return FALSE;
10788
10789   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10790                                                 tree_view->priv->cursor_node);
10791
10792   /* Don't handle the event if we aren't an expander */
10793   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10794     return FALSE;
10795
10796   if (!logical
10797       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10798     expand = !expand;
10799
10800   if (expand)
10801     gtk_tree_view_real_expand_row (tree_view,
10802                                    cursor_path,
10803                                    tree_view->priv->cursor_tree,
10804                                    tree_view->priv->cursor_node,
10805                                    open_all,
10806                                    TRUE);
10807   else
10808     gtk_tree_view_real_collapse_row (tree_view,
10809                                      cursor_path,
10810                                      tree_view->priv->cursor_tree,
10811                                      tree_view->priv->cursor_node,
10812                                      TRUE);
10813
10814   gtk_tree_path_free (cursor_path);
10815
10816   return TRUE;
10817 }
10818
10819 static gboolean
10820 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10821 {
10822   GtkTreePath *cursor_path = NULL;
10823   GdkModifierType state;
10824
10825   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10826     goto out;
10827
10828   if (tree_view->priv->cursor_node == NULL)
10829     goto out;
10830
10831   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10832                                                 tree_view->priv->cursor_node);
10833
10834   if (tree_view->priv->cursor_tree->parent_node)
10835     {
10836       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10837
10838       gtk_tree_path_up (cursor_path);
10839
10840       if (gtk_get_current_event_state (&state))
10841         {
10842           GdkModifierType modify_mod_mask;
10843
10844           modify_mod_mask =
10845             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10846                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10847
10848           if ((state & modify_mod_mask) == modify_mod_mask)
10849             tree_view->priv->modify_selection_pressed = TRUE;
10850         }
10851
10852       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10853       gtk_tree_path_free (cursor_path);
10854
10855       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10856
10857       tree_view->priv->modify_selection_pressed = FALSE;
10858
10859       return TRUE;
10860     }
10861
10862  out:
10863
10864   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10865   return FALSE;
10866 }
10867
10868 static gboolean
10869 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10870 {
10871   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10872   tree_view->priv->typeselect_flush_timeout = 0;
10873
10874   return FALSE;
10875 }
10876
10877 /* Cut and paste from gtkwindow.c */
10878 static void
10879 send_focus_change (GtkWidget *widget,
10880                    GdkDevice *device,
10881                    gboolean   in)
10882 {
10883   GdkDeviceManager *device_manager;
10884   GList *devices, *d;
10885
10886   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10887   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10888   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10889   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10890
10891   for (d = devices; d; d = d->next)
10892     {
10893       GdkDevice *dev = d->data;
10894       GdkEvent *fevent;
10895       GdkWindow *window;
10896
10897       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10898         continue;
10899
10900       window = gtk_widget_get_window (widget);
10901
10902       /* Skip non-master keyboards that haven't
10903        * selected for events from this window
10904        */
10905       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10906           !gdk_window_get_device_events (window, dev))
10907         continue;
10908
10909       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10910
10911       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10912       fevent->focus_change.window = g_object_ref (window);
10913       fevent->focus_change.in = in;
10914       gdk_event_set_device (fevent, device);
10915
10916       gtk_widget_send_focus_change (widget, fevent);
10917
10918       gdk_event_free (fevent);
10919     }
10920
10921   g_list_free (devices);
10922 }
10923
10924 static void
10925 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10926 {
10927   GtkWidget *frame, *vbox, *toplevel;
10928   GdkScreen *screen;
10929
10930   if (tree_view->priv->search_custom_entry_set)
10931     return;
10932
10933   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10934   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10935
10936    if (tree_view->priv->search_window != NULL)
10937      {
10938        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10939          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10940                                       GTK_WINDOW (tree_view->priv->search_window));
10941        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10942          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10943                                          GTK_WINDOW (tree_view->priv->search_window));
10944
10945        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10946
10947        return;
10948      }
10949
10950   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10951   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10952
10953   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10954     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10955                                  GTK_WINDOW (tree_view->priv->search_window));
10956
10957   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10958                             GDK_WINDOW_TYPE_HINT_UTILITY);
10959   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10960   g_signal_connect (tree_view->priv->search_window, "delete-event",
10961                     G_CALLBACK (gtk_tree_view_search_delete_event),
10962                     tree_view);
10963   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10964                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10965                     tree_view);
10966   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10967                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10968                     tree_view);
10969   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10970                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10971                     tree_view);
10972
10973   frame = gtk_frame_new (NULL);
10974   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10975   gtk_widget_show (frame);
10976   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10977
10978   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10979   gtk_widget_show (vbox);
10980   gtk_container_add (GTK_CONTAINER (frame), vbox);
10981   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10982
10983   /* add entry */
10984   tree_view->priv->search_entry = gtk_entry_new ();
10985   gtk_widget_show (tree_view->priv->search_entry);
10986   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10987                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10988                     tree_view);
10989   g_signal_connect (tree_view->priv->search_entry,
10990                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10991                     tree_view);
10992
10993   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10994                     "preedit-changed",
10995                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10996                     tree_view);
10997
10998   gtk_container_add (GTK_CONTAINER (vbox),
10999                      tree_view->priv->search_entry);
11000
11001   gtk_widget_realize (tree_view->priv->search_entry);
11002 }
11003
11004 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
11005  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
11006  */
11007 static gboolean
11008 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11009                                              GdkDevice   *device,
11010                                              gboolean     keybinding)
11011 {
11012   /* We only start interactive search if we have focus or the columns
11013    * have focus.  If one of our children have focus, we don't want to
11014    * start the search.
11015    */
11016   GList *list;
11017   gboolean found_focus = FALSE;
11018   GtkWidgetClass *entry_parent_class;
11019
11020   if (!tree_view->priv->enable_search && !keybinding)
11021     return FALSE;
11022
11023   if (tree_view->priv->search_custom_entry_set)
11024     return FALSE;
11025
11026   if (tree_view->priv->search_window != NULL &&
11027       gtk_widget_get_visible (tree_view->priv->search_window))
11028     return TRUE;
11029
11030   for (list = tree_view->priv->columns; list; list = list->next)
11031     {
11032       GtkTreeViewColumn *column;
11033       GtkWidget         *button;
11034
11035       column = list->data;
11036       if (!gtk_tree_view_column_get_visible (column))
11037         continue;
11038
11039       button = gtk_tree_view_column_get_button (column);
11040       if (gtk_widget_has_focus (button))
11041         {
11042           found_focus = TRUE;
11043           break;
11044         }
11045     }
11046
11047   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11048     found_focus = TRUE;
11049
11050   if (!found_focus)
11051     return FALSE;
11052
11053   if (tree_view->priv->search_column < 0)
11054     return FALSE;
11055
11056   gtk_tree_view_ensure_interactive_directory (tree_view);
11057
11058   if (keybinding)
11059     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11060
11061   /* done, show it */
11062   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11063   gtk_widget_show (tree_view->priv->search_window);
11064   if (tree_view->priv->search_entry_changed_id == 0)
11065     {
11066       tree_view->priv->search_entry_changed_id =
11067         g_signal_connect (tree_view->priv->search_entry, "changed",
11068                           G_CALLBACK (gtk_tree_view_search_init),
11069                           tree_view);
11070     }
11071
11072   tree_view->priv->typeselect_flush_timeout =
11073     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11074                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11075                    tree_view);
11076
11077   /* Grab focus will select all the text.  We don't want that to happen, so we
11078    * call the parent instance and bypass the selection change.  This is probably
11079    * really non-kosher. */
11080   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11081   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11082
11083   /* send focus-in event */
11084   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11085
11086   /* search first matching iter */
11087   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11088
11089   return TRUE;
11090 }
11091
11092 static gboolean
11093 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11094 {
11095   return gtk_tree_view_real_start_interactive_search (tree_view,
11096                                                       gtk_get_current_event_device (),
11097                                                       TRUE);
11098 }
11099
11100 /* this function returns the new width of the column being resized given
11101  * the column and x position of the cursor; the x cursor position is passed
11102  * in as a pointer and automagicly corrected if it's beyond min/max limits
11103  */
11104 static gint
11105 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11106                                 gint       i,
11107                                 gint      *x)
11108 {
11109   GtkAllocation allocation;
11110   GtkTreeViewColumn *column;
11111   GtkRequisition button_req;
11112   gint max_width, min_width;
11113   gint width;
11114   gboolean rtl;
11115
11116   /* first translate the x position from widget->window
11117    * to clist->clist_window
11118    */
11119   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11120   column = g_list_nth (tree_view->priv->columns, i)->data;
11121   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11122   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11123
11124   /* Clamp down the value */
11125   min_width = gtk_tree_view_column_get_min_width (column);
11126   if (min_width == -1)
11127     {
11128       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11129       width = MAX (button_req.width, width);
11130     }
11131   else
11132     width = MAX (min_width, width);
11133
11134   max_width = gtk_tree_view_column_get_max_width (column);
11135   if (max_width != -1)
11136     width = MIN (width, max_width);
11137
11138   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11139
11140   return width;
11141 }
11142
11143
11144 /* FIXME this adjust_allocation is a big cut-and-paste from
11145  * GtkCList, needs to be some "official" way to do this
11146  * factored out.
11147  */
11148 typedef struct
11149 {
11150   GdkWindow *window;
11151   int dx;
11152   int dy;
11153 } ScrollData;
11154
11155 /* The window to which widget->window is relative */
11156 #define ALLOCATION_WINDOW(widget)               \
11157    (!gtk_widget_get_has_window (widget) ?                   \
11158     gtk_widget_get_window (widget) :                        \
11159     gdk_window_get_parent (gtk_widget_get_window (widget)))
11160
11161 static void
11162 adjust_allocation_recurse (GtkWidget *widget,
11163                            gpointer   data)
11164 {
11165   GtkAllocation allocation;
11166   ScrollData *scroll_data = data;
11167
11168   /* Need to really size allocate instead of just poking
11169    * into widget->allocation if the widget is not realized.
11170    * FIXME someone figure out why this was.
11171    */
11172   gtk_widget_get_allocation (widget, &allocation);
11173   if (!gtk_widget_get_realized (widget))
11174     {
11175       if (gtk_widget_get_visible (widget))
11176         {
11177           GdkRectangle tmp_rectangle = allocation;
11178           tmp_rectangle.x += scroll_data->dx;
11179           tmp_rectangle.y += scroll_data->dy;
11180
11181           gtk_widget_size_allocate (widget, &tmp_rectangle);
11182         }
11183     }
11184   else
11185     {
11186       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11187         {
11188           allocation.x += scroll_data->dx;
11189           allocation.y += scroll_data->dy;
11190           gtk_widget_set_allocation (widget, &allocation);
11191
11192           if (GTK_IS_CONTAINER (widget))
11193             gtk_container_forall (GTK_CONTAINER (widget),
11194                                   adjust_allocation_recurse,
11195                                   data);
11196         }
11197     }
11198 }
11199
11200 static void
11201 adjust_allocation (GtkWidget *widget,
11202                    int        dx,
11203                    int        dy)
11204 {
11205   ScrollData scroll_data;
11206
11207   if (gtk_widget_get_realized (widget))
11208     scroll_data.window = ALLOCATION_WINDOW (widget);
11209   else
11210     scroll_data.window = NULL;
11211
11212   scroll_data.dx = dx;
11213   scroll_data.dy = dy;
11214
11215   adjust_allocation_recurse (widget, &scroll_data);
11216 }
11217
11218 /* Callbacks */
11219 static void
11220 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11221                                   GtkTreeView   *tree_view)
11222 {
11223   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11224     {
11225       GtkStyleContext *context;
11226       gint dy;
11227
11228       gdk_window_move (tree_view->priv->bin_window,
11229                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11230                        gtk_tree_view_get_effective_header_height (tree_view));
11231       gdk_window_move (tree_view->priv->header_window,
11232                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11233                        0);
11234       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11235       if (dy)
11236         {
11237           update_prelight (tree_view,
11238                            tree_view->priv->event_last_x,
11239                            tree_view->priv->event_last_y - dy);
11240
11241           if (tree_view->priv->edited_column)
11242             {
11243               GList *list;
11244               GtkTreeViewChild *child = NULL;
11245               GtkCellEditable *edit_widget;
11246               GtkCellArea *area;
11247
11248               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11249               edit_widget = gtk_cell_area_get_edit_widget (area);
11250               if (GTK_IS_WIDGET (edit_widget))
11251                 {
11252                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11253
11254                   for (list = tree_view->priv->children; list; list = list->next)
11255                     {
11256                       child = (GtkTreeViewChild *)list->data;
11257                       if (child->widget == GTK_WIDGET (edit_widget))
11258                         {
11259                           child->y += dy;
11260                           break;
11261                         }
11262                     }
11263                 }
11264             }
11265         }
11266       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11267
11268       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11269       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11270
11271       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11272         {
11273           /* update our dy and top_row */
11274           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11275
11276           if (!tree_view->priv->in_top_row_to_dy)
11277             gtk_tree_view_dy_to_top_row (tree_view);
11278         }
11279
11280       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11281       gtk_tree_view_bin_process_updates (tree_view);
11282     }
11283 }
11284
11285 \f
11286
11287 /* Public methods
11288  */
11289
11290 /**
11291  * gtk_tree_view_new:
11292  *
11293  * Creates a new #GtkTreeView widget.
11294  *
11295  * Return value: A newly created #GtkTreeView widget.
11296  **/
11297 GtkWidget *
11298 gtk_tree_view_new (void)
11299 {
11300   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11301 }
11302
11303 /**
11304  * gtk_tree_view_new_with_model:
11305  * @model: the model.
11306  *
11307  * Creates a new #GtkTreeView widget with the model initialized to @model.
11308  *
11309  * Return value: A newly created #GtkTreeView widget.
11310  **/
11311 GtkWidget *
11312 gtk_tree_view_new_with_model (GtkTreeModel *model)
11313 {
11314   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11315 }
11316
11317 /* Public Accessors
11318  */
11319
11320 /**
11321  * gtk_tree_view_get_model:
11322  * @tree_view: a #GtkTreeView
11323  *
11324  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11325  * model is unset.
11326  *
11327  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11328  **/
11329 GtkTreeModel *
11330 gtk_tree_view_get_model (GtkTreeView *tree_view)
11331 {
11332   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11333
11334   return tree_view->priv->model;
11335 }
11336
11337 /**
11338  * gtk_tree_view_set_model:
11339  * @tree_view: A #GtkTreeNode.
11340  * @model: (allow-none): The model.
11341  *
11342  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11343  * set, it will remove it before setting the new model.  If @model is %NULL,
11344  * then it will unset the old model.
11345  **/
11346 void
11347 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11348                          GtkTreeModel *model)
11349 {
11350   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11351   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11352
11353   if (model == tree_view->priv->model)
11354     return;
11355
11356   if (tree_view->priv->scroll_to_path)
11357     {
11358       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11359       tree_view->priv->scroll_to_path = NULL;
11360     }
11361
11362   if (tree_view->priv->rubber_band_status)
11363     gtk_tree_view_stop_rubber_band (tree_view);
11364
11365   if (tree_view->priv->model)
11366     {
11367       GList *tmplist = tree_view->priv->columns;
11368       GtkStyleContext *context;
11369
11370       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11371       gtk_tree_view_stop_editing (tree_view, TRUE);
11372
11373       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11374       gtk_style_context_cancel_animations (context, NULL);
11375
11376       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11377                                             gtk_tree_view_row_changed,
11378                                             tree_view);
11379       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11380                                             gtk_tree_view_row_inserted,
11381                                             tree_view);
11382       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11383                                             gtk_tree_view_row_has_child_toggled,
11384                                             tree_view);
11385       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11386                                             gtk_tree_view_row_deleted,
11387                                             tree_view);
11388       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11389                                             gtk_tree_view_rows_reordered,
11390                                             tree_view);
11391
11392       for (; tmplist; tmplist = tmplist->next)
11393         _gtk_tree_view_column_unset_model (tmplist->data,
11394                                            tree_view->priv->model);
11395
11396       if (tree_view->priv->tree)
11397         gtk_tree_view_free_rbtree (tree_view);
11398
11399       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11400       tree_view->priv->drag_dest_row = NULL;
11401       tree_view->priv->cursor_tree = NULL;
11402       tree_view->priv->cursor_node = NULL;
11403       gtk_tree_row_reference_free (tree_view->priv->anchor);
11404       tree_view->priv->anchor = NULL;
11405       gtk_tree_row_reference_free (tree_view->priv->top_row);
11406       tree_view->priv->top_row = NULL;
11407       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11408       tree_view->priv->scroll_to_path = NULL;
11409
11410       tree_view->priv->scroll_to_column = NULL;
11411
11412       g_object_unref (tree_view->priv->model);
11413
11414       tree_view->priv->search_column = -1;
11415       tree_view->priv->fixed_height_check = 0;
11416       tree_view->priv->fixed_height = -1;
11417       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11418       tree_view->priv->last_button_x = -1;
11419       tree_view->priv->last_button_y = -1;
11420     }
11421
11422   tree_view->priv->model = model;
11423
11424   if (tree_view->priv->model)
11425     {
11426       gint i;
11427       GtkTreePath *path;
11428       GtkTreeIter iter;
11429       GtkTreeModelFlags flags;
11430
11431       if (tree_view->priv->search_column == -1)
11432         {
11433           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11434             {
11435               GType type = gtk_tree_model_get_column_type (model, i);
11436
11437               if (g_value_type_transformable (type, G_TYPE_STRING))
11438                 {
11439                   tree_view->priv->search_column = i;
11440                   break;
11441                 }
11442             }
11443         }
11444
11445       g_object_ref (tree_view->priv->model);
11446       g_signal_connect (tree_view->priv->model,
11447                         "row-changed",
11448                         G_CALLBACK (gtk_tree_view_row_changed),
11449                         tree_view);
11450       g_signal_connect (tree_view->priv->model,
11451                         "row-inserted",
11452                         G_CALLBACK (gtk_tree_view_row_inserted),
11453                         tree_view);
11454       g_signal_connect (tree_view->priv->model,
11455                         "row-has-child-toggled",
11456                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11457                         tree_view);
11458       g_signal_connect (tree_view->priv->model,
11459                         "row-deleted",
11460                         G_CALLBACK (gtk_tree_view_row_deleted),
11461                         tree_view);
11462       g_signal_connect (tree_view->priv->model,
11463                         "rows-reordered",
11464                         G_CALLBACK (gtk_tree_view_rows_reordered),
11465                         tree_view);
11466
11467       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11468       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11469         tree_view->priv->is_list = TRUE;
11470       else
11471         tree_view->priv->is_list = FALSE;
11472
11473       path = gtk_tree_path_new_first ();
11474       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11475         {
11476           tree_view->priv->tree = _gtk_rbtree_new ();
11477           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11478         }
11479       gtk_tree_path_free (path);
11480
11481       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11482       install_presize_handler (tree_view);
11483     }
11484
11485   g_object_notify (G_OBJECT (tree_view), "model");
11486
11487   if (tree_view->priv->selection)
11488   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11489
11490   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11491     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11492 }
11493
11494 /**
11495  * gtk_tree_view_get_selection:
11496  * @tree_view: A #GtkTreeView.
11497  *
11498  * Gets the #GtkTreeSelection associated with @tree_view.
11499  *
11500  * Return value: (transfer none): A #GtkTreeSelection object.
11501  **/
11502 GtkTreeSelection *
11503 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11504 {
11505   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11506
11507   return tree_view->priv->selection;
11508 }
11509
11510 /**
11511  * gtk_tree_view_get_hadjustment:
11512  * @tree_view: A #GtkTreeView
11513  *
11514  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11515  *
11516  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11517  *     if none is currently being used.
11518  *
11519  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11520  **/
11521 GtkAdjustment *
11522 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11523 {
11524   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11525
11526   return gtk_tree_view_do_get_hadjustment (tree_view);
11527 }
11528
11529 static GtkAdjustment *
11530 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11531 {
11532   return tree_view->priv->hadjustment;
11533 }
11534
11535 /**
11536  * gtk_tree_view_set_hadjustment:
11537  * @tree_view: A #GtkTreeView
11538  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11539  *
11540  * Sets the #GtkAdjustment for the current horizontal aspect.
11541  *
11542  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11543  **/
11544 void
11545 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11546                                GtkAdjustment *adjustment)
11547 {
11548   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11549   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11550
11551   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11552 }
11553
11554 static void
11555 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11556                                   GtkAdjustment *adjustment)
11557 {
11558   GtkTreeViewPrivate *priv = tree_view->priv;
11559
11560   if (adjustment && priv->hadjustment == adjustment)
11561     return;
11562
11563   if (priv->hadjustment != NULL)
11564     {
11565       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11566                                             gtk_tree_view_adjustment_changed,
11567                                             tree_view);
11568       g_object_unref (priv->hadjustment);
11569     }
11570
11571   if (adjustment == NULL)
11572     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11573                                      0.0, 0.0, 0.0);
11574
11575   g_signal_connect (adjustment, "value-changed",
11576                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11577   priv->hadjustment = g_object_ref_sink (adjustment);
11578   /* FIXME: Adjustment should probably be populated here with fresh values, but
11579    * internal details are too complicated for me to decipher right now.
11580    */
11581   gtk_tree_view_adjustment_changed (NULL, tree_view);
11582
11583   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11584 }
11585
11586 /**
11587  * gtk_tree_view_get_vadjustment:
11588  * @tree_view: A #GtkTreeView
11589  *
11590  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11591  *
11592  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11593  *     if none is currently being used.
11594  *
11595  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11596  **/
11597 GtkAdjustment *
11598 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11599 {
11600   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11601
11602   return gtk_tree_view_do_get_vadjustment (tree_view);
11603 }
11604
11605 static GtkAdjustment *
11606 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11607 {
11608   return tree_view->priv->vadjustment;
11609 }
11610
11611 /**
11612  * gtk_tree_view_set_vadjustment:
11613  * @tree_view: A #GtkTreeView
11614  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11615  *
11616  * Sets the #GtkAdjustment for the current vertical aspect.
11617  *
11618  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11619  **/
11620 void
11621 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11622                                GtkAdjustment *adjustment)
11623 {
11624   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11625   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11626
11627   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11628 }
11629
11630 static void
11631 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11632                                   GtkAdjustment *adjustment)
11633 {
11634   GtkTreeViewPrivate *priv = tree_view->priv;
11635
11636   if (adjustment && priv->vadjustment == adjustment)
11637     return;
11638
11639   if (priv->vadjustment != NULL)
11640     {
11641       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11642                                             gtk_tree_view_adjustment_changed,
11643                                             tree_view);
11644       g_object_unref (priv->vadjustment);
11645     }
11646
11647   if (adjustment == NULL)
11648     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11649                                      0.0, 0.0, 0.0);
11650
11651   g_signal_connect (adjustment, "value-changed",
11652                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11653   priv->vadjustment = g_object_ref_sink (adjustment);
11654   /* FIXME: Adjustment should probably be populated here with fresh values, but
11655    * internal details are too complicated for me to decipher right now.
11656    */
11657   gtk_tree_view_adjustment_changed (NULL, tree_view);
11658   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11659 }
11660
11661 /* Column and header operations */
11662
11663 /**
11664  * gtk_tree_view_get_headers_visible:
11665  * @tree_view: A #GtkTreeView.
11666  *
11667  * Returns %TRUE if the headers on the @tree_view are visible.
11668  *
11669  * Return value: Whether the headers are visible or not.
11670  **/
11671 gboolean
11672 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11673 {
11674   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11675
11676   return tree_view->priv->headers_visible;
11677 }
11678
11679 /**
11680  * gtk_tree_view_set_headers_visible:
11681  * @tree_view: A #GtkTreeView.
11682  * @headers_visible: %TRUE if the headers are visible
11683  *
11684  * Sets the visibility state of the headers.
11685  **/
11686 void
11687 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11688                                    gboolean     headers_visible)
11689 {
11690   gint x, y;
11691   GList *list;
11692   GtkTreeViewColumn *column;
11693   GtkAllocation allocation;
11694   GtkWidget *button;
11695
11696   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11697
11698   headers_visible = !! headers_visible;
11699
11700   if (tree_view->priv->headers_visible == headers_visible)
11701     return;
11702
11703   tree_view->priv->headers_visible = headers_visible == TRUE;
11704
11705   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11706     {
11707       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11708       if (headers_visible)
11709         {
11710           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11711           gdk_window_move_resize (tree_view->priv->bin_window,
11712                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11713                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11714
11715           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11716             gtk_tree_view_map_buttons (tree_view);
11717         }
11718       else
11719         {
11720           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11721
11722           for (list = tree_view->priv->columns; list; list = list->next)
11723             {
11724               column = list->data;
11725               button = gtk_tree_view_column_get_button (column);
11726
11727               gtk_widget_hide (button);
11728               gtk_widget_unmap (button);
11729             }
11730           gdk_window_hide (tree_view->priv->header_window);
11731         }
11732     }
11733
11734   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11735   gtk_adjustment_configure (tree_view->priv->vadjustment,
11736                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11737                             0,
11738                             tree_view->priv->height,
11739                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11740                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11741                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11742
11743   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11744
11745   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11746 }
11747
11748 /**
11749  * gtk_tree_view_columns_autosize:
11750  * @tree_view: A #GtkTreeView.
11751  *
11752  * Resizes all columns to their optimal width. Only works after the
11753  * treeview has been realized.
11754  **/
11755 void
11756 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11757 {
11758   gboolean dirty = FALSE;
11759   GList *list;
11760   GtkTreeViewColumn *column;
11761
11762   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11763
11764   for (list = tree_view->priv->columns; list; list = list->next)
11765     {
11766       column = list->data;
11767       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11768         continue;
11769       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11770       dirty = TRUE;
11771     }
11772
11773   if (dirty)
11774     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11775 }
11776
11777 /**
11778  * gtk_tree_view_set_headers_clickable:
11779  * @tree_view: A #GtkTreeView.
11780  * @setting: %TRUE if the columns are clickable.
11781  *
11782  * Allow the column title buttons to be clicked.
11783  **/
11784 void
11785 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11786                                      gboolean   setting)
11787 {
11788   GList *list;
11789
11790   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11791
11792   for (list = tree_view->priv->columns; list; list = list->next)
11793     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11794
11795   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11796 }
11797
11798
11799 /**
11800  * gtk_tree_view_get_headers_clickable:
11801  * @tree_view: A #GtkTreeView.
11802  *
11803  * Returns whether all header columns are clickable.
11804  *
11805  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11806  *
11807  * Since: 2.10
11808  **/
11809 gboolean
11810 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11811 {
11812   GList *list;
11813
11814   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11815
11816   for (list = tree_view->priv->columns; list; list = list->next)
11817     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11818       return FALSE;
11819
11820   return TRUE;
11821 }
11822
11823 /**
11824  * gtk_tree_view_set_rules_hint
11825  * @tree_view: a #GtkTreeView
11826  * @setting: %TRUE if the tree requires reading across rows
11827  *
11828  * This function tells GTK+ that the user interface for your
11829  * application requires users to read across tree rows and associate
11830  * cells with one another. By default, GTK+ will then render the tree
11831  * with alternating row colors. Do <emphasis>not</emphasis> use it
11832  * just because you prefer the appearance of the ruled tree; that's a
11833  * question for the theme. Some themes will draw tree rows in
11834  * alternating colors even when rules are turned off, and users who
11835  * prefer that appearance all the time can choose those themes. You
11836  * should call this function only as a <emphasis>semantic</emphasis>
11837  * hint to the theme engine that your tree makes alternating colors
11838  * useful from a functional standpoint (since it has lots of columns,
11839  * generally).
11840  *
11841  **/
11842 void
11843 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11844                               gboolean      setting)
11845 {
11846   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11847
11848   setting = setting != FALSE;
11849
11850   if (tree_view->priv->has_rules != setting)
11851     {
11852       tree_view->priv->has_rules = setting;
11853       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11854     }
11855
11856   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11857 }
11858
11859 /**
11860  * gtk_tree_view_get_rules_hint
11861  * @tree_view: a #GtkTreeView
11862  *
11863  * Gets the setting set by gtk_tree_view_set_rules_hint().
11864  *
11865  * Return value: %TRUE if rules are useful for the user of this tree
11866  **/
11867 gboolean
11868 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11869 {
11870   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11871
11872   return tree_view->priv->has_rules;
11873 }
11874
11875 /* Public Column functions
11876  */
11877
11878 /**
11879  * gtk_tree_view_append_column:
11880  * @tree_view: A #GtkTreeView.
11881  * @column: The #GtkTreeViewColumn to add.
11882  *
11883  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11884  * mode enabled, then @column must have its "sizing" property set to be
11885  * GTK_TREE_VIEW_COLUMN_FIXED.
11886  *
11887  * Return value: The number of columns in @tree_view after appending.
11888  **/
11889 gint
11890 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11891                              GtkTreeViewColumn *column)
11892 {
11893   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11894   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11895   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11896
11897   return gtk_tree_view_insert_column (tree_view, column, -1);
11898 }
11899
11900 void
11901 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11902 {
11903   GList *columns;
11904
11905   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11906     {
11907       GtkTreeViewColumn *column = columns->data;
11908       GtkWidget *header_widget;
11909
11910       if (gtk_tree_view_column_get_visible (column))
11911         continue;
11912
11913       header_widget = gtk_tree_view_column_get_widget (column);
11914
11915       if (!header_widget)
11916         header_widget = gtk_tree_view_column_get_button (column);
11917
11918       gtk_widget_reset_style (header_widget);
11919     }
11920 }
11921
11922
11923 /**
11924  * gtk_tree_view_remove_column:
11925  * @tree_view: A #GtkTreeView.
11926  * @column: The #GtkTreeViewColumn to remove.
11927  *
11928  * Removes @column from @tree_view.
11929  *
11930  * Return value: The number of columns in @tree_view after removing.
11931  **/
11932 gint
11933 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11934                              GtkTreeViewColumn *column)
11935 {
11936   guint position;
11937
11938   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11939   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11940   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11941
11942   if (tree_view->priv->focus_column == column)
11943     tree_view->priv->focus_column = NULL;
11944
11945   if (tree_view->priv->edited_column == column)
11946     {
11947       gtk_tree_view_stop_editing (tree_view, TRUE);
11948
11949       /* no need to, but just to be sure ... */
11950       tree_view->priv->edited_column = NULL;
11951     }
11952
11953   if (tree_view->priv->expander_column == column)
11954     tree_view->priv->expander_column = NULL;
11955
11956   g_signal_handlers_disconnect_by_func (column,
11957                                         G_CALLBACK (column_sizing_notify),
11958                                         tree_view);
11959
11960   _gtk_tree_view_column_unset_tree_view (column);
11961
11962   position = g_list_index (tree_view->priv->columns, column);
11963
11964   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11965   tree_view->priv->n_columns--;
11966
11967   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11968     {
11969       GList *list;
11970
11971       _gtk_tree_view_column_unrealize_button (column);
11972       for (list = tree_view->priv->columns; list; list = list->next)
11973         {
11974           GtkTreeViewColumn *tmp_column;
11975
11976           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11977           if (gtk_tree_view_column_get_visible (tmp_column))
11978             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11979         }
11980
11981       if (tree_view->priv->n_columns == 0 &&
11982           gtk_tree_view_get_headers_visible (tree_view))
11983         gdk_window_hide (tree_view->priv->header_window);
11984
11985       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11986     }
11987
11988   _gtk_tree_view_reset_header_styles (tree_view);
11989
11990   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11991
11992   g_object_unref (column);
11993   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11994
11995   return tree_view->priv->n_columns;
11996 }
11997
11998 /**
11999  * gtk_tree_view_insert_column:
12000  * @tree_view: A #GtkTreeView.
12001  * @column: The #GtkTreeViewColumn to be inserted.
12002  * @position: The position to insert @column in.
12003  *
12004  * This inserts the @column into the @tree_view at @position.  If @position is
12005  * -1, then the column is inserted at the end. If @tree_view has
12006  * "fixed_height" mode enabled, then @column must have its "sizing" property
12007  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12008  *
12009  * Return value: The number of columns in @tree_view after insertion.
12010  **/
12011 gint
12012 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12013                              GtkTreeViewColumn *column,
12014                              gint               position)
12015 {
12016   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12017   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12018   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12019
12020   if (tree_view->priv->fixed_height_mode)
12021     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12022                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12023
12024   if (position < 0 || position > tree_view->priv->n_columns)
12025     position = tree_view->priv->n_columns;
12026
12027   g_object_ref_sink (column);
12028
12029   if (tree_view->priv->n_columns == 0 &&
12030       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12031       gtk_tree_view_get_headers_visible (tree_view))
12032     {
12033       gdk_window_show (tree_view->priv->header_window);
12034     }
12035
12036   g_signal_connect (column, "notify::sizing",
12037                     G_CALLBACK (column_sizing_notify), tree_view);
12038
12039   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12040                                             column, position);
12041   tree_view->priv->n_columns++;
12042
12043   _gtk_tree_view_column_set_tree_view (column, tree_view);
12044
12045   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12046     {
12047       GList *list;
12048
12049       _gtk_tree_view_column_realize_button (column);
12050
12051       for (list = tree_view->priv->columns; list; list = list->next)
12052         {
12053           column = GTK_TREE_VIEW_COLUMN (list->data);
12054           if (gtk_tree_view_column_get_visible (column))
12055             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12056         }
12057       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12058     }
12059
12060   _gtk_tree_view_reset_header_styles (tree_view);
12061
12062   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12063
12064   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12065
12066   return tree_view->priv->n_columns;
12067 }
12068
12069 /**
12070  * gtk_tree_view_insert_column_with_attributes:
12071  * @tree_view: A #GtkTreeView
12072  * @position: The position to insert the new column in
12073  * @title: The title to set the header to
12074  * @cell: The #GtkCellRenderer
12075  * @...: A %NULL-terminated list of attributes
12076  *
12077  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12078  * @position.  If @position is -1, then the newly created column is inserted at
12079  * the end.  The column is initialized with the attributes given. If @tree_view
12080  * has "fixed_height" mode enabled, then the new column will have its sizing
12081  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12082  *
12083  * Return value: The number of columns in @tree_view after insertion.
12084  **/
12085 gint
12086 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12087                                              gint             position,
12088                                              const gchar     *title,
12089                                              GtkCellRenderer *cell,
12090                                              ...)
12091 {
12092   GtkTreeViewColumn *column;
12093   gchar *attribute;
12094   va_list args;
12095   gint column_id;
12096
12097   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12098
12099   column = gtk_tree_view_column_new ();
12100   if (tree_view->priv->fixed_height_mode)
12101     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12102
12103   gtk_tree_view_column_set_title (column, title);
12104   gtk_tree_view_column_pack_start (column, cell, TRUE);
12105
12106   va_start (args, cell);
12107
12108   attribute = va_arg (args, gchar *);
12109
12110   while (attribute != NULL)
12111     {
12112       column_id = va_arg (args, gint);
12113       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12114       attribute = va_arg (args, gchar *);
12115     }
12116
12117   va_end (args);
12118
12119   return gtk_tree_view_insert_column (tree_view, column, position);
12120 }
12121
12122 /**
12123  * gtk_tree_view_insert_column_with_data_func:
12124  * @tree_view: a #GtkTreeView
12125  * @position: Position to insert, -1 for append
12126  * @title: column title
12127  * @cell: cell renderer for column
12128  * @func: function to set attributes of cell renderer
12129  * @data: data for @func
12130  * @dnotify: destroy notifier for @data
12131  *
12132  * Convenience function that inserts a new column into the #GtkTreeView
12133  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12134  * attributes (normally using data from the model). See also
12135  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12136  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12137  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12138  *
12139  * Return value: number of columns in the tree view post-insert
12140  **/
12141 gint
12142 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12143                                              gint                       position,
12144                                              const gchar               *title,
12145                                              GtkCellRenderer           *cell,
12146                                              GtkTreeCellDataFunc        func,
12147                                              gpointer                   data,
12148                                              GDestroyNotify             dnotify)
12149 {
12150   GtkTreeViewColumn *column;
12151
12152   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12153
12154   column = gtk_tree_view_column_new ();
12155   if (tree_view->priv->fixed_height_mode)
12156     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12157
12158   gtk_tree_view_column_set_title (column, title);
12159   gtk_tree_view_column_pack_start (column, cell, TRUE);
12160   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12161
12162   return gtk_tree_view_insert_column (tree_view, column, position);
12163 }
12164
12165 /**
12166  * gtk_tree_view_get_n_columns:
12167  * @tree_view: a #GtkTreeView
12168  *
12169  * Queries the number of columns in the given @tree_view.
12170  *
12171  * Returns: The number of columns in the @tree_view
12172  *
12173  * Since: 3.4
12174  **/
12175 guint
12176 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12177 {
12178   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12179
12180   return tree_view->priv->n_columns;
12181 }
12182
12183 /**
12184  * gtk_tree_view_get_column:
12185  * @tree_view: A #GtkTreeView.
12186  * @n: The position of the column, counting from 0.
12187  *
12188  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12189  *
12190  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12191  *     position is outside the range of columns.
12192  **/
12193 GtkTreeViewColumn *
12194 gtk_tree_view_get_column (GtkTreeView *tree_view,
12195                           gint         n)
12196 {
12197   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12198
12199   if (n < 0 || n >= tree_view->priv->n_columns)
12200     return NULL;
12201
12202   if (tree_view->priv->columns == NULL)
12203     return NULL;
12204
12205   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12206 }
12207
12208 /**
12209  * gtk_tree_view_get_columns:
12210  * @tree_view: A #GtkTreeView
12211  *
12212  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12213  * The returned list must be freed with g_list_free ().
12214  *
12215  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12216  **/
12217 GList *
12218 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12219 {
12220   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12221
12222   return g_list_copy (tree_view->priv->columns);
12223 }
12224
12225 /**
12226  * gtk_tree_view_move_column_after:
12227  * @tree_view: A #GtkTreeView
12228  * @column: The #GtkTreeViewColumn to be moved.
12229  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12230  *
12231  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12232  * @column is placed in the first position.
12233  **/
12234 void
12235 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12236                                  GtkTreeViewColumn *column,
12237                                  GtkTreeViewColumn *base_column)
12238 {
12239   GList *column_list_el, *base_el = NULL;
12240
12241   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12242
12243   column_list_el = g_list_find (tree_view->priv->columns, column);
12244   g_return_if_fail (column_list_el != NULL);
12245
12246   if (base_column)
12247     {
12248       base_el = g_list_find (tree_view->priv->columns, base_column);
12249       g_return_if_fail (base_el != NULL);
12250     }
12251
12252   if (column_list_el->prev == base_el)
12253     return;
12254
12255   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12256   if (base_el == NULL)
12257     {
12258       column_list_el->prev = NULL;
12259       column_list_el->next = tree_view->priv->columns;
12260       if (column_list_el->next)
12261         column_list_el->next->prev = column_list_el;
12262       tree_view->priv->columns = column_list_el;
12263     }
12264   else
12265     {
12266       column_list_el->prev = base_el;
12267       column_list_el->next = base_el->next;
12268       if (column_list_el->next)
12269         column_list_el->next->prev = column_list_el;
12270       base_el->next = column_list_el;
12271     }
12272
12273   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12274     {
12275       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12276       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12277     }
12278
12279   _gtk_tree_view_reset_header_styles (tree_view);
12280
12281   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12282
12283   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12284 }
12285
12286 /**
12287  * gtk_tree_view_set_expander_column:
12288  * @tree_view: A #GtkTreeView
12289  * @column: %NULL, or the column to draw the expander arrow at.
12290  *
12291  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12292  * If @column is %NULL, then the expander arrow is always at the first
12293  * visible column.
12294  *
12295  * If you do not want expander arrow to appear in your tree, set the
12296  * expander column to a hidden column.
12297  **/
12298 void
12299 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12300                                    GtkTreeViewColumn *column)
12301 {
12302   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12303   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12304   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12305
12306   if (tree_view->priv->expander_column != column)
12307     {
12308       tree_view->priv->expander_column = column;
12309       g_object_notify (G_OBJECT (tree_view), "expander-column");
12310     }
12311 }
12312
12313 /**
12314  * gtk_tree_view_get_expander_column:
12315  * @tree_view: A #GtkTreeView
12316  *
12317  * Returns the column that is the current expander column.
12318  * This column has the expander arrow drawn next to it.
12319  *
12320  * Return value: (transfer none): The expander column.
12321  **/
12322 GtkTreeViewColumn *
12323 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12324 {
12325   GList *list;
12326
12327   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12328
12329   for (list = tree_view->priv->columns; list; list = list->next)
12330     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12331       return (GtkTreeViewColumn *) list->data;
12332   return NULL;
12333 }
12334
12335
12336 /**
12337  * gtk_tree_view_set_column_drag_function:
12338  * @tree_view: A #GtkTreeView.
12339  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12340  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12341  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12342  *
12343  * Sets a user function for determining where a column may be dropped when
12344  * dragged.  This function is called on every column pair in turn at the
12345  * beginning of a column drag to determine where a drop can take place.  The
12346  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12347  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12348  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12349  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12350  * @tree_view reverts to the default behavior of allowing all columns to be
12351  * dropped everywhere.
12352  **/
12353 void
12354 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12355                                         GtkTreeViewColumnDropFunc  func,
12356                                         gpointer                   user_data,
12357                                         GDestroyNotify             destroy)
12358 {
12359   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12360
12361   if (tree_view->priv->column_drop_func_data_destroy)
12362     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12363
12364   tree_view->priv->column_drop_func = func;
12365   tree_view->priv->column_drop_func_data = user_data;
12366   tree_view->priv->column_drop_func_data_destroy = destroy;
12367 }
12368
12369 /**
12370  * gtk_tree_view_scroll_to_point:
12371  * @tree_view: a #GtkTreeView
12372  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12373  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12374  *
12375  * Scrolls the tree view such that the top-left corner of the visible
12376  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12377  * in tree coordinates.  The @tree_view must be realized before
12378  * this function is called.  If it isn't, you probably want to be
12379  * using gtk_tree_view_scroll_to_cell().
12380  *
12381  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12382  **/
12383 void
12384 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12385                                gint         tree_x,
12386                                gint         tree_y)
12387 {
12388   GtkAdjustment *hadj;
12389   GtkAdjustment *vadj;
12390
12391   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12392   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12393
12394   hadj = tree_view->priv->hadjustment;
12395   vadj = tree_view->priv->vadjustment;
12396
12397   if (tree_x != -1)
12398     gtk_adjustment_set_value (hadj, tree_x);
12399   if (tree_y != -1)
12400     gtk_adjustment_set_value (vadj, tree_y);
12401 }
12402
12403 /**
12404  * gtk_tree_view_scroll_to_cell:
12405  * @tree_view: A #GtkTreeView.
12406  * @path: (allow-none): The path of the row to move to, or %NULL.
12407  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12408  * @use_align: whether to use alignment arguments, or %FALSE.
12409  * @row_align: The vertical alignment of the row specified by @path.
12410  * @col_align: The horizontal alignment of the column specified by @column.
12411  *
12412  * Moves the alignments of @tree_view to the position specified by @column and
12413  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12414  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12415  * or @path need to be non-%NULL.  @row_align determines where the row is
12416  * placed, and @col_align determines where @column is placed.  Both are expected
12417  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12418  * right/bottom alignment, 0.5 means center.
12419  *
12420  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12421  * tree does the minimum amount of work to scroll the cell onto the screen.
12422  * This means that the cell will be scrolled to the edge closest to its current
12423  * position.  If the cell is currently visible on the screen, nothing is done.
12424  *
12425  * This function only works if the model is set, and @path is a valid row on the
12426  * model.  If the model changes before the @tree_view is realized, the centered
12427  * path will be modified to reflect this change.
12428  **/
12429 void
12430 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12431                               GtkTreePath       *path,
12432                               GtkTreeViewColumn *column,
12433                               gboolean           use_align,
12434                               gfloat             row_align,
12435                               gfloat             col_align)
12436 {
12437   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12438   g_return_if_fail (tree_view->priv->model != NULL);
12439   g_return_if_fail (tree_view->priv->tree != NULL);
12440   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12441   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12442   g_return_if_fail (path != NULL || column != NULL);
12443
12444 #if 0
12445   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12446            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12447 #endif
12448   row_align = CLAMP (row_align, 0.0, 1.0);
12449   col_align = CLAMP (col_align, 0.0, 1.0);
12450
12451
12452   /* Note: Despite the benefits that come from having one code path for the
12453    * scrolling code, we short-circuit validate_visible_area's immplementation as
12454    * it is much slower than just going to the point.
12455    */
12456   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12457       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12458       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12459       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12460     {
12461       if (tree_view->priv->scroll_to_path)
12462         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12463
12464       tree_view->priv->scroll_to_path = NULL;
12465       tree_view->priv->scroll_to_column = NULL;
12466
12467       if (path)
12468         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12469       if (column)
12470         tree_view->priv->scroll_to_column = column;
12471       tree_view->priv->scroll_to_use_align = use_align;
12472       tree_view->priv->scroll_to_row_align = row_align;
12473       tree_view->priv->scroll_to_col_align = col_align;
12474
12475       install_presize_handler (tree_view);
12476     }
12477   else
12478     {
12479       GdkRectangle cell_rect;
12480       GdkRectangle vis_rect;
12481       gint dest_x, dest_y;
12482
12483       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12484       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12485
12486       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12487
12488       dest_x = vis_rect.x;
12489       dest_y = vis_rect.y;
12490
12491       if (column)
12492         {
12493           if (use_align)
12494             {
12495               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12496             }
12497           else
12498             {
12499               if (cell_rect.x < vis_rect.x)
12500                 dest_x = cell_rect.x;
12501               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12502                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12503             }
12504         }
12505
12506       if (path)
12507         {
12508           if (use_align)
12509             {
12510               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12511               dest_y = MAX (dest_y, 0);
12512             }
12513           else
12514             {
12515               if (cell_rect.y < vis_rect.y)
12516                 dest_y = cell_rect.y;
12517               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12518                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12519             }
12520         }
12521
12522       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12523     }
12524 }
12525
12526 /**
12527  * gtk_tree_view_row_activated:
12528  * @tree_view: A #GtkTreeView
12529  * @path: The #GtkTreePath to be activated.
12530  * @column: The #GtkTreeViewColumn to be activated.
12531  *
12532  * Activates the cell determined by @path and @column.
12533  **/
12534 void
12535 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12536                              GtkTreePath       *path,
12537                              GtkTreeViewColumn *column)
12538 {
12539   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12540
12541   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12542 }
12543
12544
12545 static void
12546 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12547                                           GtkRBNode *node,
12548                                           gpointer   data)
12549 {
12550   GtkTreeView *tree_view = data;
12551
12552   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12553       node->children)
12554     {
12555       GtkTreePath *path;
12556       GtkTreeIter iter;
12557
12558       path = _gtk_tree_path_new_from_rbtree (tree, node);
12559       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12560
12561       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12562
12563       gtk_tree_path_free (path);
12564     }
12565
12566   if (node->children)
12567     _gtk_rbtree_traverse (node->children,
12568                           node->children->root,
12569                           G_PRE_ORDER,
12570                           gtk_tree_view_expand_all_emission_helper,
12571                           tree_view);
12572 }
12573
12574 /**
12575  * gtk_tree_view_expand_all:
12576  * @tree_view: A #GtkTreeView.
12577  *
12578  * Recursively expands all nodes in the @tree_view.
12579  **/
12580 void
12581 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12582 {
12583   GtkTreePath *path;
12584   GtkRBTree *tree;
12585   GtkRBNode *node;
12586
12587   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12588
12589   if (tree_view->priv->tree == NULL)
12590     return;
12591
12592   path = gtk_tree_path_new_first ();
12593   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12594
12595   while (node)
12596     {
12597       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12598       node = _gtk_rbtree_next (tree, node);
12599       gtk_tree_path_next (path);
12600   }
12601
12602   gtk_tree_path_free (path);
12603 }
12604
12605 /**
12606  * gtk_tree_view_collapse_all:
12607  * @tree_view: A #GtkTreeView.
12608  *
12609  * Recursively collapses all visible, expanded nodes in @tree_view.
12610  **/
12611 void
12612 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12613 {
12614   GtkRBTree *tree;
12615   GtkRBNode *node;
12616   GtkTreePath *path;
12617   gint *indices;
12618
12619   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12620
12621   if (tree_view->priv->tree == NULL)
12622     return;
12623
12624   path = gtk_tree_path_new ();
12625   gtk_tree_path_down (path);
12626   indices = gtk_tree_path_get_indices (path);
12627
12628   tree = tree_view->priv->tree;
12629   node = _gtk_rbtree_first (tree);
12630
12631   while (node)
12632     {
12633       if (node->children)
12634         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12635       indices[0]++;
12636       node = _gtk_rbtree_next (tree, node);
12637     }
12638
12639   gtk_tree_path_free (path);
12640 }
12641
12642 /**
12643  * gtk_tree_view_expand_to_path:
12644  * @tree_view: A #GtkTreeView.
12645  * @path: path to a row.
12646  *
12647  * Expands the row at @path. This will also expand all parent rows of
12648  * @path as necessary.
12649  *
12650  * Since: 2.2
12651  **/
12652 void
12653 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12654                               GtkTreePath *path)
12655 {
12656   gint i, depth;
12657   gint *indices;
12658   GtkTreePath *tmp;
12659
12660   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12661   g_return_if_fail (path != NULL);
12662
12663   depth = gtk_tree_path_get_depth (path);
12664   indices = gtk_tree_path_get_indices (path);
12665
12666   tmp = gtk_tree_path_new ();
12667   g_return_if_fail (tmp != NULL);
12668
12669   for (i = 0; i < depth; i++)
12670     {
12671       gtk_tree_path_append_index (tmp, indices[i]);
12672       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12673     }
12674
12675   gtk_tree_path_free (tmp);
12676 }
12677
12678 /* FIXME the bool return values for expand_row and collapse_row are
12679  * not analagous; they should be TRUE if the row had children and
12680  * was not already in the requested state.
12681  */
12682
12683
12684 static gboolean
12685 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12686                                GtkTreePath *path,
12687                                GtkRBTree   *tree,
12688                                GtkRBNode   *node,
12689                                gboolean     open_all,
12690                                gboolean     animate)
12691 {
12692   GtkTreeIter iter;
12693   GtkTreeIter temp;
12694   gboolean expand;
12695
12696   if (animate)
12697     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12698                   "gtk-enable-animations", &animate,
12699                   NULL);
12700
12701   remove_auto_expand_timeout (tree_view);
12702
12703   if (node->children && !open_all)
12704     return FALSE;
12705
12706   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12707     return FALSE;
12708
12709   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12710   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12711     return FALSE;
12712
12713
12714    if (node->children && open_all)
12715     {
12716       gboolean retval = FALSE;
12717       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12718
12719       gtk_tree_path_append_index (tmp_path, 0);
12720       tree = node->children;
12721       node = _gtk_rbtree_first (tree);
12722       /* try to expand the children */
12723       do
12724         {
12725          gboolean t;
12726          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12727                                             TRUE, animate);
12728          if (t)
12729            retval = TRUE;
12730
12731          gtk_tree_path_next (tmp_path);
12732          node = _gtk_rbtree_next (tree, node);
12733        }
12734       while (node != NULL);
12735
12736       gtk_tree_path_free (tmp_path);
12737
12738       return retval;
12739     }
12740
12741   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12742
12743   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12744     return FALSE;
12745
12746   if (expand)
12747     return FALSE;
12748
12749   node->children = _gtk_rbtree_new ();
12750   node->children->parent_tree = tree;
12751   node->children->parent_node = node;
12752
12753   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12754
12755   gtk_tree_view_build_tree (tree_view,
12756                             node->children,
12757                             &temp,
12758                             gtk_tree_path_get_depth (path) + 1,
12759                             open_all);
12760
12761   _gtk_tree_view_accessible_expanded (tree_view, tree, node);
12762
12763   if (animate)
12764     {
12765       GtkStyleContext *context;
12766
12767       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12768
12769       gtk_style_context_save (context);
12770       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12771
12772       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12773                                              node, GTK_STATE_ACTIVE, TRUE);
12774
12775       _gtk_style_context_invalidate_animation_areas (context);
12776       gtk_style_context_restore (context);
12777     }
12778
12779   install_presize_handler (tree_view);
12780
12781   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12782   if (open_all && node->children)
12783     {
12784       _gtk_rbtree_traverse (node->children,
12785                             node->children->root,
12786                             G_PRE_ORDER,
12787                             gtk_tree_view_expand_all_emission_helper,
12788                             tree_view);
12789     }
12790   return TRUE;
12791 }
12792
12793
12794 /**
12795  * gtk_tree_view_expand_row:
12796  * @tree_view: a #GtkTreeView
12797  * @path: path to a row
12798  * @open_all: whether to recursively expand, or just expand immediate children
12799  *
12800  * Opens the row so its children are visible.
12801  *
12802  * Return value: %TRUE if the row existed and had children
12803  **/
12804 gboolean
12805 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12806                           GtkTreePath *path,
12807                           gboolean     open_all)
12808 {
12809   GtkRBTree *tree;
12810   GtkRBNode *node;
12811
12812   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12813   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12814   g_return_val_if_fail (path != NULL, FALSE);
12815
12816   if (_gtk_tree_view_find_node (tree_view,
12817                                 path,
12818                                 &tree,
12819                                 &node))
12820     return FALSE;
12821
12822   if (tree != NULL)
12823     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12824   else
12825     return FALSE;
12826 }
12827
12828 static gboolean
12829 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12830                                  GtkTreePath *path,
12831                                  GtkRBTree   *tree,
12832                                  GtkRBNode   *node,
12833                                  gboolean     animate)
12834 {
12835   GtkTreeIter iter;
12836   GtkTreeIter children;
12837   gboolean collapse;
12838   gint x, y;
12839   GList *list;
12840   GdkWindow *child;
12841   gboolean selection_changed, cursor_changed;
12842
12843   if (animate)
12844     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12845                   "gtk-enable-animations", &animate,
12846                   NULL);
12847
12848   remove_auto_expand_timeout (tree_view);
12849
12850   if (node->children == NULL)
12851     return FALSE;
12852   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12853
12854   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12855
12856   if (collapse)
12857     return FALSE;
12858
12859   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12860    * a chance to prelight the correct node below */
12861
12862   if (tree_view->priv->prelight_tree)
12863     {
12864       GtkRBTree *parent_tree;
12865       GtkRBNode *parent_node;
12866
12867       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12868       parent_node = tree_view->priv->prelight_tree->parent_node;
12869       while (parent_tree)
12870         {
12871           if (parent_tree == tree && parent_node == node)
12872             {
12873               ensure_unprelighted (tree_view);
12874               break;
12875             }
12876           parent_node = parent_tree->parent_node;
12877           parent_tree = parent_tree->parent_tree;
12878         }
12879     }
12880
12881   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12882
12883   for (list = tree_view->priv->columns; list; list = list->next)
12884     {
12885       GtkTreeViewColumn *column = list->data;
12886
12887       if (gtk_tree_view_column_get_visible (column) == FALSE)
12888         continue;
12889       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12890         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12891     }
12892
12893   if (tree_view->priv->destroy_count_func)
12894     {
12895       GtkTreePath *child_path;
12896       gint child_count = 0;
12897       child_path = gtk_tree_path_copy (path);
12898       gtk_tree_path_down (child_path);
12899       if (node->children)
12900         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12901       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12902       gtk_tree_path_free (child_path);
12903     }
12904
12905   if (tree_view->priv->cursor_node)
12906     {
12907       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12908                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12909     }
12910
12911   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12912     {
12913       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12914       if (gtk_tree_path_is_ancestor (path, anchor_path))
12915         {
12916           gtk_tree_row_reference_free (tree_view->priv->anchor);
12917           tree_view->priv->anchor = NULL;
12918         }
12919       gtk_tree_path_free (anchor_path);
12920     }
12921
12922   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12923
12924   /* Stop a pending double click */
12925   tree_view->priv->last_button_x = -1;
12926   tree_view->priv->last_button_y = -1;
12927
12928   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12929   _gtk_tree_view_accessible_remove_state (tree_view,
12930                                           tree, node,
12931                                           GTK_CELL_RENDERER_EXPANDED);
12932
12933   _gtk_rbtree_remove (node->children);
12934
12935   if (cursor_changed)
12936     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12937   if (selection_changed)
12938     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12939
12940   if (animate)
12941     {
12942       GtkStyleContext *context;
12943
12944       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12945
12946       gtk_style_context_save (context);
12947       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12948
12949       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12950                                              node, GTK_STATE_ACTIVE, FALSE);
12951
12952       _gtk_style_context_invalidate_animation_areas (context);
12953       gtk_style_context_restore (context);
12954     }
12955
12956   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12957     {
12958       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12959     }
12960
12961   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12962
12963   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12964     {
12965       /* now that we've collapsed all rows, we want to try to set the prelight
12966        * again. To do this, we fake a motion event and send it to ourselves. */
12967
12968       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12969                                               gdk_device_manager_get_client_pointer (
12970                                                 gdk_display_get_device_manager (
12971                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12972                                               &x, &y, NULL);
12973       if (child == tree_view->priv->bin_window)
12974         {
12975           GdkEventMotion event;
12976           gint child_x, child_y;
12977
12978           gdk_window_get_position (child, &child_x, &child_y);
12979
12980           event.window = tree_view->priv->bin_window;
12981           event.x = x - child_x;
12982           event.y = y - child_y;
12983
12984           /* despite the fact this isn't a real event, I'm almost positive it will
12985            * never trigger a drag event.  maybe_drag is the only function that uses
12986            * more than just event.x and event.y. */
12987           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12988         }
12989     }
12990
12991   return TRUE;
12992 }
12993
12994 /**
12995  * gtk_tree_view_collapse_row:
12996  * @tree_view: a #GtkTreeView
12997  * @path: path to a row in the @tree_view
12998  *
12999  * Collapses a row (hides its child rows, if they exist).
13000  *
13001  * Return value: %TRUE if the row was collapsed.
13002  **/
13003 gboolean
13004 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
13005                             GtkTreePath *path)
13006 {
13007   GtkRBTree *tree;
13008   GtkRBNode *node;
13009
13010   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13011   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13012   g_return_val_if_fail (path != NULL, FALSE);
13013
13014   if (_gtk_tree_view_find_node (tree_view,
13015                                 path,
13016                                 &tree,
13017                                 &node))
13018     return FALSE;
13019
13020   if (tree == NULL || node->children == NULL)
13021     return FALSE;
13022
13023   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13024 }
13025
13026 static void
13027 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13028                                         GtkRBTree              *tree,
13029                                         GtkTreePath            *path,
13030                                         GtkTreeViewMappingFunc  func,
13031                                         gpointer                user_data)
13032 {
13033   GtkRBNode *node;
13034
13035   if (tree == NULL || tree->root == NULL)
13036     return;
13037
13038   node = _gtk_rbtree_first (tree);
13039
13040   while (node)
13041     {
13042       if (node->children)
13043         {
13044           (* func) (tree_view, path, user_data);
13045           gtk_tree_path_down (path);
13046           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13047           gtk_tree_path_up (path);
13048         }
13049       gtk_tree_path_next (path);
13050       node = _gtk_rbtree_next (tree, node);
13051     }
13052 }
13053
13054 /**
13055  * gtk_tree_view_map_expanded_rows:
13056  * @tree_view: A #GtkTreeView
13057  * @func: (scope call): A function to be called
13058  * @data: User data to be passed to the function.
13059  *
13060  * Calls @func on all expanded rows.
13061  **/
13062 void
13063 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13064                                  GtkTreeViewMappingFunc  func,
13065                                  gpointer                user_data)
13066 {
13067   GtkTreePath *path;
13068
13069   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13070   g_return_if_fail (func != NULL);
13071
13072   path = gtk_tree_path_new_first ();
13073
13074   gtk_tree_view_map_expanded_rows_helper (tree_view,
13075                                           tree_view->priv->tree,
13076                                           path, func, user_data);
13077
13078   gtk_tree_path_free (path);
13079 }
13080
13081 /**
13082  * gtk_tree_view_row_expanded:
13083  * @tree_view: A #GtkTreeView.
13084  * @path: A #GtkTreePath to test expansion state.
13085  *
13086  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13087  *
13088  * Return value: %TRUE if #path is expanded.
13089  **/
13090 gboolean
13091 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13092                             GtkTreePath *path)
13093 {
13094   GtkRBTree *tree;
13095   GtkRBNode *node;
13096
13097   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13098   g_return_val_if_fail (path != NULL, FALSE);
13099
13100   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13101
13102   if (node == NULL)
13103     return FALSE;
13104
13105   return (node->children != NULL);
13106 }
13107
13108 /**
13109  * gtk_tree_view_get_reorderable:
13110  * @tree_view: a #GtkTreeView
13111  *
13112  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13113  * gtk_tree_view_set_reorderable().
13114  *
13115  * Return value: %TRUE if the tree can be reordered.
13116  **/
13117 gboolean
13118 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13119 {
13120   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13121
13122   return tree_view->priv->reorderable;
13123 }
13124
13125 /**
13126  * gtk_tree_view_set_reorderable:
13127  * @tree_view: A #GtkTreeView.
13128  * @reorderable: %TRUE, if the tree can be reordered.
13129  *
13130  * This function is a convenience function to allow you to reorder
13131  * models that support the #GtkTreeDragSourceIface and the
13132  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13133  * these.  If @reorderable is %TRUE, then the user can reorder the
13134  * model by dragging and dropping rows. The developer can listen to
13135  * these changes by connecting to the model's row_inserted and
13136  * row_deleted signals. The reordering is implemented by setting up
13137  * the tree view as a drag source and destination. Therefore, drag and
13138  * drop can not be used in a reorderable view for any other purpose.
13139  *
13140  * This function does not give you any degree of control over the order -- any
13141  * reordering is allowed.  If more control is needed, you should probably
13142  * handle drag and drop manually.
13143  **/
13144 void
13145 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13146                                gboolean     reorderable)
13147 {
13148   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13149
13150   reorderable = reorderable != FALSE;
13151
13152   if (tree_view->priv->reorderable == reorderable)
13153     return;
13154
13155   if (reorderable)
13156     {
13157       const GtkTargetEntry row_targets[] = {
13158         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13159       };
13160
13161       gtk_tree_view_enable_model_drag_source (tree_view,
13162                                               GDK_BUTTON1_MASK,
13163                                               row_targets,
13164                                               G_N_ELEMENTS (row_targets),
13165                                               GDK_ACTION_MOVE);
13166       gtk_tree_view_enable_model_drag_dest (tree_view,
13167                                             row_targets,
13168                                             G_N_ELEMENTS (row_targets),
13169                                             GDK_ACTION_MOVE);
13170     }
13171   else
13172     {
13173       gtk_tree_view_unset_rows_drag_source (tree_view);
13174       gtk_tree_view_unset_rows_drag_dest (tree_view);
13175     }
13176
13177   tree_view->priv->reorderable = reorderable;
13178
13179   g_object_notify (G_OBJECT (tree_view), "reorderable");
13180 }
13181
13182 static void
13183 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13184                                GtkTreePath     *path,
13185                                SetCursorFlags   flags)
13186 {
13187   if (!(flags & CURSOR_INVALID) && tree_view->priv->cursor_node)
13188     {
13189       _gtk_tree_view_queue_draw_node (tree_view,
13190                                       tree_view->priv->cursor_tree,
13191                                       tree_view->priv->cursor_node,
13192                                       NULL);
13193     }
13194
13195   /* One cannot set the cursor on a separator.   Also, if
13196    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13197    * before finding the tree and node belonging to path.  The
13198    * path maps to a non-existing path and we will silently bail out.
13199    * We unset tree and node to avoid further processing.
13200    */
13201   if (row_is_separator (tree_view, NULL, path)
13202       || _gtk_tree_view_find_node (tree_view,
13203                                    path,
13204                                    &tree_view->priv->cursor_tree,
13205                                    &tree_view->priv->cursor_node))
13206     {
13207       tree_view->priv->cursor_tree = NULL;
13208       tree_view->priv->cursor_node = NULL;
13209     }
13210
13211   if (tree_view->priv->cursor_node != NULL)
13212     {
13213       GtkRBTree *new_tree = NULL;
13214       GtkRBNode *new_node = NULL;
13215
13216       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13217         {
13218           GtkTreeSelectMode mode = 0;
13219
13220           if (tree_view->priv->extend_selection_pressed)
13221             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13222
13223           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13224                                                     tree_view->priv->cursor_node,
13225                                                     tree_view->priv->cursor_tree,
13226                                                     path,
13227                                                     mode,
13228                                                     FALSE);
13229         }
13230
13231       /* We have to re-find tree and node here again, somebody might have
13232        * cleared the node or the whole tree in the GtkTreeSelection::changed
13233        * callback. If the nodes differ we bail out here.
13234        */
13235       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13236
13237       if (tree_view->priv->cursor_node != new_node)
13238         return;
13239
13240       if (flags & CLAMP_NODE)
13241         {
13242           gtk_tree_view_clamp_node_visible (tree_view,
13243                                             tree_view->priv->cursor_tree,
13244                                             tree_view->priv->cursor_node);
13245           _gtk_tree_view_queue_draw_node (tree_view,
13246                                           tree_view->priv->cursor_tree,
13247                                           tree_view->priv->cursor_node,
13248                                           NULL);
13249         }
13250     }
13251
13252   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13253 }
13254
13255 /**
13256  * gtk_tree_view_get_cursor:
13257  * @tree_view: A #GtkTreeView
13258  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13259  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13260  *
13261  * Fills in @path and @focus_column with the current path and focus column.  If
13262  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13263  * currently has focus, then *@focus_column will be %NULL.
13264  *
13265  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13266  * you are done with it.
13267  **/
13268 void
13269 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13270                           GtkTreePath       **path,
13271                           GtkTreeViewColumn **focus_column)
13272 {
13273   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13274
13275   if (path)
13276     {
13277       if (tree_view->priv->cursor_node)
13278         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13279                                                 tree_view->priv->cursor_node);
13280       else
13281         *path = NULL;
13282     }
13283
13284   if (focus_column)
13285     {
13286       *focus_column = tree_view->priv->focus_column;
13287     }
13288 }
13289
13290 /**
13291  * gtk_tree_view_set_cursor:
13292  * @tree_view: A #GtkTreeView
13293  * @path: A #GtkTreePath
13294  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13295  * @start_editing: %TRUE if the specified cell should start being edited.
13296  *
13297  * Sets the current keyboard focus to be at @path, and selects it.  This is
13298  * useful when you want to focus the user's attention on a particular row.  If
13299  * @focus_column is not %NULL, then focus is given to the column specified by
13300  * it. Additionally, if @focus_column is specified, and @start_editing is
13301  * %TRUE, then editing should be started in the specified cell.
13302  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13303  * in order to give keyboard focus to the widget.  Please note that editing
13304  * can only happen when the widget is realized.
13305  *
13306  * If @path is invalid for @model, the current cursor (if any) will be unset
13307  * and the function will return without failing.
13308  **/
13309 void
13310 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13311                           GtkTreePath       *path,
13312                           GtkTreeViewColumn *focus_column,
13313                           gboolean           start_editing)
13314 {
13315   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13316                                     NULL, start_editing);
13317 }
13318
13319 /**
13320  * gtk_tree_view_set_cursor_on_cell:
13321  * @tree_view: A #GtkTreeView
13322  * @path: A #GtkTreePath
13323  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13324  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13325  * @start_editing: %TRUE if the specified cell should start being edited.
13326  *
13327  * Sets the current keyboard focus to be at @path, and selects it.  This is
13328  * useful when you want to focus the user's attention on a particular row.  If
13329  * @focus_column is not %NULL, then focus is given to the column specified by
13330  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13331  * contains 2 or more editable or activatable cells, then focus is given to
13332  * the cell specified by @focus_cell. Additionally, if @focus_column is
13333  * specified, and @start_editing is %TRUE, then editing should be started in
13334  * the specified cell.  This function is often followed by
13335  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13336  * widget.  Please note that editing can only happen when the widget is
13337  * realized.
13338  *
13339  * If @path is invalid for @model, the current cursor (if any) will be unset
13340  * and the function will return without failing.
13341  *
13342  * Since: 2.2
13343  **/
13344 void
13345 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13346                                   GtkTreePath       *path,
13347                                   GtkTreeViewColumn *focus_column,
13348                                   GtkCellRenderer   *focus_cell,
13349                                   gboolean           start_editing)
13350 {
13351   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13352   g_return_if_fail (path != NULL);
13353   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13354
13355   if (!tree_view->priv->model)
13356     return;
13357
13358   if (focus_cell)
13359     {
13360       g_return_if_fail (focus_column);
13361       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13362     }
13363
13364   /* cancel the current editing, if it exists */
13365   if (tree_view->priv->edited_column &&
13366       gtk_cell_area_get_edit_widget
13367       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13368     gtk_tree_view_stop_editing (tree_view, TRUE);
13369
13370   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13371
13372   if (focus_column &&
13373       gtk_tree_view_column_get_visible (focus_column))
13374     {
13375       GList *list;
13376       gboolean column_in_tree = FALSE;
13377
13378       for (list = tree_view->priv->columns; list; list = list->next)
13379         if (list->data == focus_column)
13380           {
13381             column_in_tree = TRUE;
13382             break;
13383           }
13384       g_return_if_fail (column_in_tree);
13385       tree_view->priv->focus_column = focus_column;
13386       if (focus_cell)
13387         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13388       if (start_editing)
13389         gtk_tree_view_start_editing (tree_view, path, TRUE);
13390     }
13391 }
13392
13393 /**
13394  * gtk_tree_view_get_bin_window:
13395  * @tree_view: A #GtkTreeView
13396  *
13397  * Returns the window that @tree_view renders to.
13398  * This is used primarily to compare to <literal>event->window</literal>
13399  * to confirm that the event on @tree_view is on the right window.
13400  *
13401  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13402  *     hasn't been realized yet
13403  **/
13404 GdkWindow *
13405 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13406 {
13407   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13408
13409   return tree_view->priv->bin_window;
13410 }
13411
13412 /**
13413  * gtk_tree_view_get_path_at_pos:
13414  * @tree_view: A #GtkTreeView.
13415  * @x: The x position to be identified (relative to bin_window).
13416  * @y: The y position to be identified (relative to bin_window).
13417  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13418  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13419  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13420  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13421  *
13422  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13423  * (please see gtk_tree_view_get_bin_window()).
13424  * That is, @x and @y are relative to an events coordinates. @x and @y must
13425  * come from an event on the @tree_view only where <literal>event->window ==
13426  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13427  * things like popup menus. If @path is non-%NULL, then it will be filled
13428  * with the #GtkTreePath at that point.  This path should be freed with
13429  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13430  * with the column at that point.  @cell_x and @cell_y return the coordinates
13431  * relative to the cell background (i.e. the @background_area passed to
13432  * gtk_cell_renderer_render()).  This function is only meaningful if
13433  * @tree_view is realized.  Therefore this function will always return %FALSE
13434  * if @tree_view is not realized or does not have a model.
13435  *
13436  * For converting widget coordinates (eg. the ones you get from
13437  * GtkWidget::query-tooltip), please see
13438  * gtk_tree_view_convert_widget_to_bin_window_coords().
13439  *
13440  * Return value: %TRUE if a row exists at that coordinate.
13441  **/
13442 gboolean
13443 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13444                                gint                x,
13445                                gint                y,
13446                                GtkTreePath       **path,
13447                                GtkTreeViewColumn **column,
13448                                gint               *cell_x,
13449                                gint               *cell_y)
13450 {
13451   GtkRBTree *tree;
13452   GtkRBNode *node;
13453   gint y_offset;
13454
13455   g_return_val_if_fail (tree_view != NULL, FALSE);
13456
13457   if (path)
13458     *path = NULL;
13459   if (column)
13460     *column = NULL;
13461
13462   if (tree_view->priv->bin_window == NULL)
13463     return FALSE;
13464
13465   if (tree_view->priv->tree == NULL)
13466     return FALSE;
13467
13468   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13469     return FALSE;
13470
13471   if (x < 0 || y < 0)
13472     return FALSE;
13473
13474   if (column || cell_x)
13475     {
13476       GtkTreeViewColumn *tmp_column;
13477       GtkTreeViewColumn *last_column = NULL;
13478       GList *list;
13479       gint remaining_x = x;
13480       gboolean found = FALSE;
13481       gboolean rtl;
13482       gint width;
13483
13484       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13485       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13486            list;
13487            list = (rtl ? list->prev : list->next))
13488         {
13489           tmp_column = list->data;
13490
13491           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13492             continue;
13493
13494           last_column = tmp_column;
13495           width = gtk_tree_view_column_get_width (tmp_column);
13496           if (remaining_x <= width)
13497             {
13498               found = TRUE;
13499
13500               if (column)
13501                 *column = tmp_column;
13502
13503               if (cell_x)
13504                 *cell_x = remaining_x;
13505
13506               break;
13507             }
13508           remaining_x -= width;
13509         }
13510
13511       /* If found is FALSE and there is a last_column, then it the remainder
13512        * space is in that area
13513        */
13514       if (!found)
13515         {
13516           if (last_column)
13517             {
13518               if (column)
13519                 *column = last_column;
13520
13521               if (cell_x)
13522                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13523             }
13524           else
13525             {
13526               return FALSE;
13527             }
13528         }
13529     }
13530
13531   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13532                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13533                                       &tree, &node);
13534
13535   if (tree == NULL)
13536     return FALSE;
13537
13538   if (cell_y)
13539     *cell_y = y_offset;
13540
13541   if (path)
13542     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13543
13544   return TRUE;
13545 }
13546
13547
13548 static inline gint
13549 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13550                                     GtkRBNode   *node,
13551                                     gint         vertical_separator)
13552 {
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 < tree_view->priv->expander_size)
13565     height = tree_view->priv->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               if (!rtl)
13673                 rect->x += depth * tree_view->priv->expander_size;
13674               rect->width -= depth * tree_view->priv->expander_size;
13675             }
13676
13677           rect->width = MAX (rect->width, 0);
13678         }
13679     }
13680 }
13681
13682 static inline gint
13683 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13684                               GtkRBNode   *node)
13685 {
13686   int height;
13687
13688   /* The "background" areas of all rows/cells add up to cover the entire tree.
13689    * The background includes all inter-row and inter-cell spacing.
13690    *
13691    * If the row pointed at by node does not have a height set, we default
13692    * to expander_size, which is the minimum height for regular nodes.
13693    * Non-regular nodes (e.g. separators) can have a height set smaller
13694    * than expander_size and should not be overruled here.
13695    */
13696   height = GTK_RBNODE_GET_HEIGHT (node);
13697   if (height <= 0)
13698     height = tree_view->priv->expander_size;
13699
13700   return height;
13701 }
13702
13703 static inline gint
13704 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13705                                 GtkRBTree   *tree,
13706                                 GtkRBNode   *node)
13707 {
13708   int offset;
13709
13710   offset = _gtk_rbtree_node_find_offset (tree, node);
13711
13712   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13713 }
13714
13715 /**
13716  * gtk_tree_view_get_background_area:
13717  * @tree_view: a #GtkTreeView
13718  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13719  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13720  * @rect: (out): rectangle to fill with cell background rect
13721  *
13722  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13723  * row specified by @path and the column specified by @column.  If @path is
13724  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13725  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13726  * fields will be filled with 0.  The returned rectangle is equivalent to the
13727  * @background_area passed to gtk_cell_renderer_render().  These background
13728  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13729  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13730  * itself, excluding surrounding borders and the tree expander area.
13731  *
13732  **/
13733 void
13734 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13735                                    GtkTreePath        *path,
13736                                    GtkTreeViewColumn  *column,
13737                                    GdkRectangle       *rect)
13738 {
13739   GtkRBTree *tree = NULL;
13740   GtkRBNode *node = NULL;
13741
13742   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13743   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13744   g_return_if_fail (rect != NULL);
13745
13746   rect->x = 0;
13747   rect->y = 0;
13748   rect->width = 0;
13749   rect->height = 0;
13750
13751   if (path)
13752     {
13753       /* Get vertical coords */
13754
13755       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13756           tree == NULL)
13757         return;
13758
13759       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13760       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13761     }
13762
13763   if (column)
13764     {
13765       gint x2 = 0;
13766
13767       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13768       rect->width = x2 - rect->x;
13769     }
13770 }
13771
13772 /**
13773  * gtk_tree_view_get_visible_rect:
13774  * @tree_view: a #GtkTreeView
13775  * @visible_rect: (out): rectangle to fill
13776  *
13777  * Fills @visible_rect with the currently-visible region of the
13778  * buffer, in tree coordinates. Convert to bin_window coordinates with
13779  * gtk_tree_view_convert_tree_to_bin_window_coords().
13780  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13781  * scrollable area of the tree.
13782  **/
13783 void
13784 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13785                                 GdkRectangle *visible_rect)
13786 {
13787   GtkAllocation allocation;
13788   GtkWidget *widget;
13789
13790   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13791
13792   widget = GTK_WIDGET (tree_view);
13793
13794   if (visible_rect)
13795     {
13796       gtk_widget_get_allocation (widget, &allocation);
13797       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13798       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13799       visible_rect->width = allocation.width;
13800       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13801     }
13802 }
13803
13804 /**
13805  * gtk_tree_view_convert_widget_to_tree_coords:
13806  * @tree_view: a #GtkTreeView
13807  * @wx: X coordinate relative to the widget
13808  * @wy: Y coordinate relative to the widget
13809  * @tx: (out): return location for tree X coordinate
13810  * @ty: (out): return location for tree Y coordinate
13811  *
13812  * Converts widget coordinates to coordinates for the
13813  * tree (the full scrollable area of the tree).
13814  *
13815  * Since: 2.12
13816  **/
13817 void
13818 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13819                                              gint         wx,
13820                                              gint         wy,
13821                                              gint        *tx,
13822                                              gint        *ty)
13823 {
13824   gint x, y;
13825
13826   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13827
13828   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13829                                                      wx, wy,
13830                                                      &x, &y);
13831   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13832                                                    x, y,
13833                                                    tx, ty);
13834 }
13835
13836 /**
13837  * gtk_tree_view_convert_tree_to_widget_coords:
13838  * @tree_view: a #GtkTreeView
13839  * @tx: X coordinate relative to the tree
13840  * @ty: Y coordinate relative to the tree
13841  * @wx: (out): return location for widget X coordinate
13842  * @wy: (out): return location for widget Y coordinate
13843  *
13844  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13845  * to widget coordinates.
13846  *
13847  * Since: 2.12
13848  **/
13849 void
13850 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13851                                              gint         tx,
13852                                              gint         ty,
13853                                              gint        *wx,
13854                                              gint        *wy)
13855 {
13856   gint x, y;
13857
13858   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13859
13860   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13861                                                    tx, ty,
13862                                                    &x, &y);
13863   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13864                                                      x, y,
13865                                                      wx, wy);
13866 }
13867
13868 /**
13869  * gtk_tree_view_convert_widget_to_bin_window_coords:
13870  * @tree_view: a #GtkTreeView
13871  * @wx: X coordinate relative to the widget
13872  * @wy: Y coordinate relative to the widget
13873  * @bx: (out): return location for bin_window X coordinate
13874  * @by: (out): return location for bin_window Y coordinate
13875  *
13876  * Converts widget coordinates to coordinates for the bin_window
13877  * (see gtk_tree_view_get_bin_window()).
13878  *
13879  * Since: 2.12
13880  **/
13881 void
13882 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13883                                                    gint         wx,
13884                                                    gint         wy,
13885                                                    gint        *bx,
13886                                                    gint        *by)
13887 {
13888   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13889
13890   if (bx)
13891     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13892   if (by)
13893     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13894 }
13895
13896 /**
13897  * gtk_tree_view_convert_bin_window_to_widget_coords:
13898  * @tree_view: a #GtkTreeView
13899  * @bx: bin_window X coordinate
13900  * @by: bin_window Y coordinate
13901  * @wx: (out): return location for widget X coordinate
13902  * @wy: (out): return location for widget Y coordinate
13903  *
13904  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13905  * to widget relative coordinates.
13906  *
13907  * Since: 2.12
13908  **/
13909 void
13910 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13911                                                    gint         bx,
13912                                                    gint         by,
13913                                                    gint        *wx,
13914                                                    gint        *wy)
13915 {
13916   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13917
13918   if (wx)
13919     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13920   if (wy)
13921     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13922 }
13923
13924 /**
13925  * gtk_tree_view_convert_tree_to_bin_window_coords:
13926  * @tree_view: a #GtkTreeView
13927  * @tx: tree X coordinate
13928  * @ty: tree Y coordinate
13929  * @bx: (out): return location for X coordinate relative to bin_window
13930  * @by: (out): return location for Y coordinate relative to bin_window
13931  *
13932  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13933  * to bin_window coordinates.
13934  *
13935  * Since: 2.12
13936  **/
13937 void
13938 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13939                                                  gint         tx,
13940                                                  gint         ty,
13941                                                  gint        *bx,
13942                                                  gint        *by)
13943 {
13944   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13945
13946   if (bx)
13947     *bx = tx;
13948   if (by)
13949     *by = ty - tree_view->priv->dy;
13950 }
13951
13952 /**
13953  * gtk_tree_view_convert_bin_window_to_tree_coords:
13954  * @tree_view: a #GtkTreeView
13955  * @bx: X coordinate relative to bin_window
13956  * @by: Y coordinate relative to bin_window
13957  * @tx: (out): return location for tree X coordinate
13958  * @ty: (out): return location for tree Y coordinate
13959  *
13960  * Converts bin_window coordinates to coordinates for the
13961  * tree (the full scrollable area of the tree).
13962  *
13963  * Since: 2.12
13964  **/
13965 void
13966 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13967                                                  gint         bx,
13968                                                  gint         by,
13969                                                  gint        *tx,
13970                                                  gint        *ty)
13971 {
13972   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13973
13974   if (tx)
13975     *tx = bx;
13976   if (ty)
13977     *ty = by + tree_view->priv->dy;
13978 }
13979
13980
13981
13982 /**
13983  * gtk_tree_view_get_visible_range:
13984  * @tree_view: A #GtkTreeView
13985  * @start_path: (out) (allow-none): Return location for start of region,
13986  *              or %NULL.
13987  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13988  *
13989  * Sets @start_path and @end_path to be the first and last visible path.
13990  * Note that there may be invisible paths in between.
13991  *
13992  * The paths should be freed with gtk_tree_path_free() after use.
13993  *
13994  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13995  *
13996  * Since: 2.8
13997  **/
13998 gboolean
13999 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
14000                                  GtkTreePath **start_path,
14001                                  GtkTreePath **end_path)
14002 {
14003   GtkRBTree *tree;
14004   GtkRBNode *node;
14005   gboolean retval;
14006
14007   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14008
14009   if (!tree_view->priv->tree)
14010     return FALSE;
14011
14012   retval = TRUE;
14013
14014   if (start_path)
14015     {
14016       _gtk_rbtree_find_offset (tree_view->priv->tree,
14017                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14018                                &tree, &node);
14019       if (node)
14020         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
14021       else
14022         retval = FALSE;
14023     }
14024
14025   if (end_path)
14026     {
14027       gint y;
14028
14029       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14030         y = tree_view->priv->height - 1;
14031       else
14032         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14033
14034       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14035       if (node)
14036         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14037       else
14038         retval = FALSE;
14039     }
14040
14041   return retval;
14042 }
14043
14044 /**
14045  * gtk_tree_view_is_blank_at_pos:
14046  * @tree_view: A #GtkTreeView
14047  * @x: The x position to be identified (relative to bin_window)
14048  * @y: The y position to be identified (relative to bin_window)
14049  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14050  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14051  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14052  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14053  *
14054  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14055  * cell content nor an expander arrow is drawn at the location. If so, the
14056  * location can be considered as the background. You might wish to take
14057  * special action on clicks on the background, such as clearing a current
14058  * selection, having a custom context menu or starting rubber banding.
14059  *
14060  * The @x and @y coordinate that are provided must be relative to bin_window
14061  * coordinates.  That is, @x and @y must come from an event on @tree_view
14062  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14063  *
14064  * For converting widget coordinates (eg. the ones you get from
14065  * GtkWidget::query-tooltip), please see
14066  * gtk_tree_view_convert_widget_to_bin_window_coords().
14067  *
14068  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14069  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14070  * gtk_tree_view_get_path_at_pos() for more information.
14071  *
14072  * Return value: %TRUE if the area at the given coordinates is blank,
14073  * %FALSE otherwise.
14074  *
14075  * Since: 3.0
14076  */
14077 gboolean
14078 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14079                                gint                x,
14080                                gint                y,
14081                                GtkTreePath       **path,
14082                                GtkTreeViewColumn **column,
14083                                gint               *cell_x,
14084                                gint               *cell_y)
14085 {
14086   GtkRBTree *tree;
14087   GtkRBNode *node;
14088   GtkTreeIter iter;
14089   GtkTreePath *real_path;
14090   GtkTreeViewColumn *real_column;
14091   GdkRectangle cell_area, background_area;
14092
14093   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14094
14095   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14096                                       &real_path, &real_column,
14097                                       cell_x, cell_y))
14098     /* If there's no path here, it is blank */
14099     return TRUE;
14100
14101   if (path)
14102     *path = real_path;
14103
14104   if (column)
14105     *column = real_column;
14106
14107   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14108   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14109
14110   /* Check if there's an expander arrow at (x, y) */
14111   if (real_column == tree_view->priv->expander_column
14112       && gtk_tree_view_draw_expanders (tree_view))
14113     {
14114       gboolean over_arrow;
14115
14116       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14117
14118       if (over_arrow)
14119         {
14120           if (!path)
14121             gtk_tree_path_free (real_path);
14122           return FALSE;
14123         }
14124     }
14125
14126   /* Otherwise, have the column see if there's a cell at (x, y) */
14127   gtk_tree_view_column_cell_set_cell_data (real_column,
14128                                            tree_view->priv->model,
14129                                            &iter,
14130                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14131                                            node->children ? TRUE : FALSE);
14132
14133   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14134                                      &background_area);
14135   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14136                                &cell_area);
14137
14138   if (!path)
14139     gtk_tree_path_free (real_path);
14140
14141   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14142                                                 &cell_area,
14143                                                 &background_area,
14144                                                 x, y);
14145 }
14146
14147 static void
14148 unset_reorderable (GtkTreeView *tree_view)
14149 {
14150   if (tree_view->priv->reorderable)
14151     {
14152       tree_view->priv->reorderable = FALSE;
14153       g_object_notify (G_OBJECT (tree_view), "reorderable");
14154     }
14155 }
14156
14157 /**
14158  * gtk_tree_view_enable_model_drag_source:
14159  * @tree_view: a #GtkTreeView
14160  * @start_button_mask: Mask of allowed buttons to start drag
14161  * @targets: (array length=n_targets): the table of targets that the drag will support
14162  * @n_targets: the number of items in @targets
14163  * @actions: the bitmask of possible actions for a drag from this
14164  *    widget
14165  *
14166  * Turns @tree_view into a drag source for automatic DND. Calling this
14167  * method sets #GtkTreeView:reorderable to %FALSE.
14168  **/
14169 void
14170 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14171                                         GdkModifierType           start_button_mask,
14172                                         const GtkTargetEntry     *targets,
14173                                         gint                      n_targets,
14174                                         GdkDragAction             actions)
14175 {
14176   TreeViewDragInfo *di;
14177
14178   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14179
14180   gtk_drag_source_set (GTK_WIDGET (tree_view),
14181                        0,
14182                        targets,
14183                        n_targets,
14184                        actions);
14185
14186   di = ensure_info (tree_view);
14187
14188   di->start_button_mask = start_button_mask;
14189   di->source_actions = actions;
14190   di->source_set = TRUE;
14191
14192   unset_reorderable (tree_view);
14193 }
14194
14195 /**
14196  * gtk_tree_view_enable_model_drag_dest:
14197  * @tree_view: a #GtkTreeView
14198  * @targets: (array length=n_targets): the table of targets that
14199  *           the drag will support
14200  * @n_targets: the number of items in @targets
14201  * @actions: the bitmask of possible actions for a drag from this
14202  *    widget
14203  *
14204  * Turns @tree_view into a drop destination for automatic DND. Calling
14205  * this method sets #GtkTreeView:reorderable to %FALSE.
14206  **/
14207 void
14208 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14209                                       const GtkTargetEntry     *targets,
14210                                       gint                      n_targets,
14211                                       GdkDragAction             actions)
14212 {
14213   TreeViewDragInfo *di;
14214
14215   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14216
14217   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14218                      0,
14219                      targets,
14220                      n_targets,
14221                      actions);
14222
14223   di = ensure_info (tree_view);
14224   di->dest_set = TRUE;
14225
14226   unset_reorderable (tree_view);
14227 }
14228
14229 /**
14230  * gtk_tree_view_unset_rows_drag_source:
14231  * @tree_view: a #GtkTreeView
14232  *
14233  * Undoes the effect of
14234  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14235  * #GtkTreeView:reorderable to %FALSE.
14236  **/
14237 void
14238 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14239 {
14240   TreeViewDragInfo *di;
14241
14242   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14243
14244   di = get_info (tree_view);
14245
14246   if (di)
14247     {
14248       if (di->source_set)
14249         {
14250           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14251           di->source_set = FALSE;
14252         }
14253
14254       if (!di->dest_set && !di->source_set)
14255         remove_info (tree_view);
14256     }
14257
14258   unset_reorderable (tree_view);
14259 }
14260
14261 /**
14262  * gtk_tree_view_unset_rows_drag_dest:
14263  * @tree_view: a #GtkTreeView
14264  *
14265  * Undoes the effect of
14266  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14267  * #GtkTreeView:reorderable to %FALSE.
14268  **/
14269 void
14270 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14271 {
14272   TreeViewDragInfo *di;
14273
14274   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14275
14276   di = get_info (tree_view);
14277
14278   if (di)
14279     {
14280       if (di->dest_set)
14281         {
14282           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14283           di->dest_set = FALSE;
14284         }
14285
14286       if (!di->dest_set && !di->source_set)
14287         remove_info (tree_view);
14288     }
14289
14290   unset_reorderable (tree_view);
14291 }
14292
14293 /**
14294  * gtk_tree_view_set_drag_dest_row:
14295  * @tree_view: a #GtkTreeView
14296  * @path: (allow-none): The path of the row to highlight, or %NULL
14297  * @pos: Specifies whether to drop before, after or into the row
14298  *
14299  * Sets the row that is highlighted for feedback.
14300  * If @path is %NULL, an existing highlight is removed.
14301  */
14302 void
14303 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14304                                  GtkTreePath            *path,
14305                                  GtkTreeViewDropPosition pos)
14306 {
14307   GtkTreePath *current_dest;
14308
14309   /* Note; this function is exported to allow a custom DND
14310    * implementation, so it can't touch TreeViewDragInfo
14311    */
14312
14313   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14314
14315   current_dest = NULL;
14316
14317   if (tree_view->priv->drag_dest_row)
14318     {
14319       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14320       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14321     }
14322
14323   /* special case a drop on an empty model */
14324   tree_view->priv->empty_view_drop = 0;
14325
14326   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14327       && gtk_tree_path_get_depth (path) == 1
14328       && gtk_tree_path_get_indices (path)[0] == 0)
14329     {
14330       gint n_children;
14331
14332       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14333                                                    NULL);
14334
14335       if (!n_children)
14336         tree_view->priv->empty_view_drop = 1;
14337     }
14338
14339   tree_view->priv->drag_dest_pos = pos;
14340
14341   if (path)
14342     {
14343       tree_view->priv->drag_dest_row =
14344         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14345       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14346     }
14347   else
14348     tree_view->priv->drag_dest_row = NULL;
14349
14350   if (current_dest)
14351     {
14352       GtkRBTree *tree, *new_tree;
14353       GtkRBNode *node, *new_node;
14354
14355       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14356       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14357
14358       if (tree && node)
14359         {
14360           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14361           if (new_tree && new_node)
14362             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14363
14364           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14365           if (new_tree && new_node)
14366             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14367         }
14368       gtk_tree_path_free (current_dest);
14369     }
14370 }
14371
14372 /**
14373  * gtk_tree_view_get_drag_dest_row:
14374  * @tree_view: a #GtkTreeView
14375  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14376  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14377  *
14378  * Gets information about the row that is highlighted for feedback.
14379  **/
14380 void
14381 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14382                                  GtkTreePath             **path,
14383                                  GtkTreeViewDropPosition  *pos)
14384 {
14385   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14386
14387   if (path)
14388     {
14389       if (tree_view->priv->drag_dest_row)
14390         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14391       else
14392         {
14393           if (tree_view->priv->empty_view_drop)
14394             *path = gtk_tree_path_new_from_indices (0, -1);
14395           else
14396             *path = NULL;
14397         }
14398     }
14399
14400   if (pos)
14401     *pos = tree_view->priv->drag_dest_pos;
14402 }
14403
14404 /**
14405  * gtk_tree_view_get_dest_row_at_pos:
14406  * @tree_view: a #GtkTreeView
14407  * @drag_x: the position to determine the destination row for
14408  * @drag_y: the position to determine the destination row for
14409  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14410  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14411  *
14412  * Determines the destination row for a given position.  @drag_x and
14413  * @drag_y are expected to be in widget coordinates.  This function is only
14414  * meaningful if @tree_view is realized.  Therefore this function will always
14415  * return %FALSE if @tree_view is not realized or does not have a model.
14416  *
14417  * Return value: whether there is a row at the given position, %TRUE if this
14418  * is indeed the case.
14419  **/
14420 gboolean
14421 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14422                                    gint                     drag_x,
14423                                    gint                     drag_y,
14424                                    GtkTreePath            **path,
14425                                    GtkTreeViewDropPosition *pos)
14426 {
14427   gint cell_y;
14428   gint bin_x, bin_y;
14429   gdouble offset_into_row;
14430   gdouble third;
14431   GdkRectangle cell;
14432   GtkTreeViewColumn *column = NULL;
14433   GtkTreePath *tmp_path = NULL;
14434
14435   /* Note; this function is exported to allow a custom DND
14436    * implementation, so it can't touch TreeViewDragInfo
14437    */
14438
14439   g_return_val_if_fail (tree_view != NULL, FALSE);
14440   g_return_val_if_fail (drag_x >= 0, FALSE);
14441   g_return_val_if_fail (drag_y >= 0, FALSE);
14442
14443   if (path)
14444     *path = NULL;
14445
14446   if (tree_view->priv->bin_window == NULL)
14447     return FALSE;
14448
14449   if (tree_view->priv->tree == NULL)
14450     return FALSE;
14451
14452   /* If in the top third of a row, we drop before that row; if
14453    * in the bottom third, drop after that row; if in the middle,
14454    * and the row has children, drop into the row.
14455    */
14456   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14457                                                      &bin_x, &bin_y);
14458
14459   if (!gtk_tree_view_get_path_at_pos (tree_view,
14460                                       bin_x,
14461                                       bin_y,
14462                                       &tmp_path,
14463                                       &column,
14464                                       NULL,
14465                                       &cell_y))
14466     return FALSE;
14467
14468   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14469                                      &cell);
14470
14471   offset_into_row = cell_y;
14472
14473   if (path)
14474     *path = tmp_path;
14475   else
14476     gtk_tree_path_free (tmp_path);
14477
14478   tmp_path = NULL;
14479
14480   third = cell.height / 3.0;
14481
14482   if (pos)
14483     {
14484       if (offset_into_row < third)
14485         {
14486           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14487         }
14488       else if (offset_into_row < (cell.height / 2.0))
14489         {
14490           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14491         }
14492       else if (offset_into_row < third * 2.0)
14493         {
14494           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14495         }
14496       else
14497         {
14498           *pos = GTK_TREE_VIEW_DROP_AFTER;
14499         }
14500     }
14501
14502   return TRUE;
14503 }
14504
14505
14506
14507 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14508 /**
14509  * gtk_tree_view_create_row_drag_icon:
14510  * @tree_view: a #GtkTreeView
14511  * @path: a #GtkTreePath in @tree_view
14512  *
14513  * Creates a #cairo_surface_t representation of the row at @path.
14514  * This image is used for a drag icon.
14515  *
14516  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14517  **/
14518 cairo_surface_t *
14519 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14520                                     GtkTreePath  *path)
14521 {
14522   GtkTreeIter   iter;
14523   GtkRBTree    *tree;
14524   GtkRBNode    *node;
14525   GtkStyleContext *context;
14526   GtkStateFlags state;
14527   gint cell_offset;
14528   GList *list;
14529   GdkRectangle background_area;
14530   GtkWidget *widget;
14531   gint depth;
14532   /* start drawing inside the black outline */
14533   gint x = 1, y = 1;
14534   cairo_surface_t *surface;
14535   gint bin_window_width;
14536   gboolean is_separator = FALSE;
14537   gboolean rtl, allow_rules;
14538   cairo_t *cr;
14539
14540   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14541   g_return_val_if_fail (path != NULL, NULL);
14542
14543   widget = GTK_WIDGET (tree_view);
14544
14545   if (!gtk_widget_get_realized (widget))
14546     return NULL;
14547
14548   depth = gtk_tree_path_get_depth (path);
14549
14550   _gtk_tree_view_find_node (tree_view,
14551                             path,
14552                             &tree,
14553                             &node);
14554
14555   if (tree == NULL)
14556     return NULL;
14557
14558   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14559                                 &iter,
14560                                 path))
14561     return NULL;
14562
14563   context = gtk_widget_get_style_context (widget);
14564
14565   gtk_style_context_save (context);
14566
14567   state = gtk_widget_get_state_flags (widget);
14568   gtk_style_context_set_state (context, state);
14569
14570   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14571   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14572
14573   gtk_widget_style_get (widget,
14574                         "allow-rules", &allow_rules,
14575                         NULL);
14576
14577   if (allow_rules && tree_view->priv->has_rules)
14578     {
14579       GtkRegionFlags row_flags;
14580
14581       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14582         row_flags = GTK_REGION_ODD;
14583       else
14584         row_flags = GTK_REGION_EVEN;
14585
14586       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14587     }
14588
14589   is_separator = row_is_separator (tree_view, &iter, NULL);
14590
14591   cell_offset = x;
14592
14593   background_area.y = y;
14594   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14595
14596   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14597
14598   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14599                                                CAIRO_CONTENT_COLOR,
14600                                                bin_window_width + 2,
14601                                                background_area.height + 2);
14602
14603   cr = cairo_create (surface);
14604
14605   gtk_render_background (context, cr, 0, 0,
14606                          bin_window_width + 2,
14607                          background_area.height + 2);
14608
14609   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14610
14611   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14612       list;
14613       list = (rtl ? list->prev : list->next))
14614     {
14615       GtkTreeViewColumn *column = list->data;
14616       GdkRectangle cell_area;
14617       gint vertical_separator;
14618
14619       if (!gtk_tree_view_column_get_visible (column))
14620         continue;
14621
14622       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14623                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14624                                                node->children?TRUE:FALSE);
14625
14626       background_area.x = cell_offset;
14627       background_area.width = gtk_tree_view_column_get_width (column);
14628
14629       gtk_widget_style_get (widget,
14630                             "vertical-separator", &vertical_separator,
14631                             NULL);
14632
14633       cell_area = background_area;
14634
14635       cell_area.y += vertical_separator / 2;
14636       cell_area.height -= vertical_separator;
14637
14638       if (gtk_tree_view_is_expander_column (tree_view, column))
14639         {
14640           if (!rtl)
14641             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14642           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14643
14644           if (gtk_tree_view_draw_expanders (tree_view))
14645             {
14646               if (!rtl)
14647                 cell_area.x += depth * tree_view->priv->expander_size;
14648               cell_area.width -= depth * tree_view->priv->expander_size;
14649             }
14650         }
14651
14652       if (gtk_tree_view_column_cell_is_visible (column))
14653         {
14654           if (is_separator)
14655             {
14656               gtk_style_context_save (context);
14657               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14658
14659               gtk_render_line (context, cr,
14660                                cell_area.x,
14661                                cell_area.y + cell_area.height / 2,
14662                                cell_area.x + cell_area.width,
14663                                cell_area.y + cell_area.height / 2);
14664
14665               gtk_style_context_restore (context);
14666             }
14667           else
14668             {
14669               _gtk_tree_view_column_cell_render (column,
14670                                                  cr,
14671                                                  &background_area,
14672                                                  &cell_area,
14673                                                  0, FALSE);
14674             }
14675         }
14676       cell_offset += gtk_tree_view_column_get_width (column);
14677     }
14678
14679   cairo_set_source_rgb (cr, 0, 0, 0);
14680   cairo_rectangle (cr,
14681                    0.5, 0.5,
14682                    bin_window_width + 1,
14683                    background_area.height + 1);
14684   cairo_set_line_width (cr, 1.0);
14685   cairo_stroke (cr);
14686
14687   cairo_destroy (cr);
14688
14689   cairo_surface_set_device_offset (surface, 2, 2);
14690
14691   gtk_style_context_restore (context);
14692
14693   return surface;
14694 }
14695
14696
14697 /**
14698  * gtk_tree_view_set_destroy_count_func:
14699  * @tree_view: A #GtkTreeView
14700  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14701  * @data: (allow-none): User data to be passed to @func, or %NULL
14702  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14703  *
14704  * This function should almost never be used.  It is meant for private use by
14705  * ATK for determining the number of visible children that are removed when the
14706  * user collapses a row, or a row is deleted.
14707  *
14708  * Deprecated: 3.4: Accessibility does not need the function anymore.
14709  **/
14710 void
14711 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14712                                       GtkTreeDestroyCountFunc  func,
14713                                       gpointer                 data,
14714                                       GDestroyNotify           destroy)
14715 {
14716   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14717
14718   if (tree_view->priv->destroy_count_destroy)
14719     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14720
14721   tree_view->priv->destroy_count_func = func;
14722   tree_view->priv->destroy_count_data = data;
14723   tree_view->priv->destroy_count_destroy = destroy;
14724 }
14725
14726
14727 /*
14728  * Interactive search
14729  */
14730
14731 /**
14732  * gtk_tree_view_set_enable_search:
14733  * @tree_view: A #GtkTreeView
14734  * @enable_search: %TRUE, if the user can search interactively
14735  *
14736  * If @enable_search is set, then the user can type in text to search through
14737  * the tree interactively (this is sometimes called "typeahead find").
14738  *
14739  * Note that even if this is %FALSE, the user can still initiate a search
14740  * using the "start-interactive-search" key binding.
14741  */
14742 void
14743 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14744                                  gboolean     enable_search)
14745 {
14746   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14747
14748   enable_search = !!enable_search;
14749
14750   if (tree_view->priv->enable_search != enable_search)
14751     {
14752        tree_view->priv->enable_search = enable_search;
14753        g_object_notify (G_OBJECT (tree_view), "enable-search");
14754     }
14755 }
14756
14757 /**
14758  * gtk_tree_view_get_enable_search:
14759  * @tree_view: A #GtkTreeView
14760  *
14761  * Returns whether or not the tree allows to start interactive searching
14762  * by typing in text.
14763  *
14764  * Return value: whether or not to let the user search interactively
14765  */
14766 gboolean
14767 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14768 {
14769   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14770
14771   return tree_view->priv->enable_search;
14772 }
14773
14774
14775 /**
14776  * gtk_tree_view_get_search_column:
14777  * @tree_view: A #GtkTreeView
14778  *
14779  * Gets the column searched on by the interactive search code.
14780  *
14781  * Return value: the column the interactive search code searches in.
14782  */
14783 gint
14784 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14785 {
14786   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14787
14788   return (tree_view->priv->search_column);
14789 }
14790
14791 /**
14792  * gtk_tree_view_set_search_column:
14793  * @tree_view: A #GtkTreeView
14794  * @column: the column of the model to search in, or -1 to disable searching
14795  *
14796  * Sets @column as the column where the interactive search code should
14797  * search in for the current model.
14798  *
14799  * If the search column is set, users can use the "start-interactive-search"
14800  * key binding to bring up search popup. The enable-search property controls
14801  * whether simply typing text will also start an interactive search.
14802  *
14803  * Note that @column refers to a column of the current model. The search
14804  * column is reset to -1 when the model is changed.
14805  */
14806 void
14807 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14808                                  gint         column)
14809 {
14810   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14811   g_return_if_fail (column >= -1);
14812
14813   if (tree_view->priv->search_column == column)
14814     return;
14815
14816   tree_view->priv->search_column = column;
14817   g_object_notify (G_OBJECT (tree_view), "search-column");
14818 }
14819
14820 /**
14821  * gtk_tree_view_get_search_equal_func: (skip)
14822  * @tree_view: A #GtkTreeView
14823  *
14824  * Returns the compare function currently in use.
14825  *
14826  * Return value: the currently used compare function for the search code.
14827  */
14828
14829 GtkTreeViewSearchEqualFunc
14830 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14831 {
14832   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14833
14834   return tree_view->priv->search_equal_func;
14835 }
14836
14837 /**
14838  * gtk_tree_view_set_search_equal_func:
14839  * @tree_view: A #GtkTreeView
14840  * @search_equal_func: the compare function to use during the search
14841  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14842  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14843  *
14844  * Sets the compare function for the interactive search capabilities; note
14845  * that somewhat like strcmp() returning 0 for equality
14846  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14847  **/
14848 void
14849 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14850                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14851                                      gpointer                    search_user_data,
14852                                      GDestroyNotify              search_destroy)
14853 {
14854   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14855   g_return_if_fail (search_equal_func != NULL);
14856
14857   if (tree_view->priv->search_destroy)
14858     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14859
14860   tree_view->priv->search_equal_func = search_equal_func;
14861   tree_view->priv->search_user_data = search_user_data;
14862   tree_view->priv->search_destroy = search_destroy;
14863   if (tree_view->priv->search_equal_func == NULL)
14864     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14865 }
14866
14867 /**
14868  * gtk_tree_view_get_search_entry:
14869  * @tree_view: A #GtkTreeView
14870  *
14871  * Returns the #GtkEntry which is currently in use as interactive search
14872  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14873  * will be returned.
14874  *
14875  * Return value: (transfer none): the entry currently in use as search entry.
14876  *
14877  * Since: 2.10
14878  */
14879 GtkEntry *
14880 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14881 {
14882   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14883
14884   if (tree_view->priv->search_custom_entry_set)
14885     return GTK_ENTRY (tree_view->priv->search_entry);
14886
14887   return NULL;
14888 }
14889
14890 /**
14891  * gtk_tree_view_set_search_entry:
14892  * @tree_view: A #GtkTreeView
14893  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14894  *
14895  * Sets the entry which the interactive search code will use for this
14896  * @tree_view.  This is useful when you want to provide a search entry
14897  * in our interface at all time at a fixed position.  Passing %NULL for
14898  * @entry will make the interactive search code use the built-in popup
14899  * entry again.
14900  *
14901  * Since: 2.10
14902  */
14903 void
14904 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14905                                 GtkEntry    *entry)
14906 {
14907   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14908   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14909
14910   if (tree_view->priv->search_custom_entry_set)
14911     {
14912       if (tree_view->priv->search_entry_changed_id)
14913         {
14914           g_signal_handler_disconnect (tree_view->priv->search_entry,
14915                                        tree_view->priv->search_entry_changed_id);
14916           tree_view->priv->search_entry_changed_id = 0;
14917         }
14918       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14919                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14920                                             tree_view);
14921
14922       g_object_unref (tree_view->priv->search_entry);
14923     }
14924   else if (tree_view->priv->search_window)
14925     {
14926       gtk_widget_destroy (tree_view->priv->search_window);
14927
14928       tree_view->priv->search_window = NULL;
14929     }
14930
14931   if (entry)
14932     {
14933       tree_view->priv->search_entry = g_object_ref (entry);
14934       tree_view->priv->search_custom_entry_set = TRUE;
14935
14936       if (tree_view->priv->search_entry_changed_id == 0)
14937         {
14938           tree_view->priv->search_entry_changed_id =
14939             g_signal_connect (tree_view->priv->search_entry, "changed",
14940                               G_CALLBACK (gtk_tree_view_search_init),
14941                               tree_view);
14942         }
14943
14944         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14945                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14946                           tree_view);
14947
14948         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14949     }
14950   else
14951     {
14952       tree_view->priv->search_entry = NULL;
14953       tree_view->priv->search_custom_entry_set = FALSE;
14954     }
14955 }
14956
14957 /**
14958  * gtk_tree_view_set_search_position_func:
14959  * @tree_view: A #GtkTreeView
14960  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14961  *    to use the default search position function
14962  * @data: (allow-none): user data to pass to @func, or %NULL
14963  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14964  *
14965  * Sets the function to use when positioning the search dialog.
14966  *
14967  * Since: 2.10
14968  **/
14969 void
14970 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14971                                         GtkTreeViewSearchPositionFunc  func,
14972                                         gpointer                       user_data,
14973                                         GDestroyNotify                 destroy)
14974 {
14975   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14976
14977   if (tree_view->priv->search_position_destroy)
14978     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14979
14980   tree_view->priv->search_position_func = func;
14981   tree_view->priv->search_position_user_data = user_data;
14982   tree_view->priv->search_position_destroy = destroy;
14983   if (tree_view->priv->search_position_func == NULL)
14984     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14985 }
14986
14987 /**
14988  * gtk_tree_view_get_search_position_func: (skip)
14989  * @tree_view: A #GtkTreeView
14990  *
14991  * Returns the positioning function currently in use.
14992  *
14993  * Return value: the currently used function for positioning the search dialog.
14994  *
14995  * Since: 2.10
14996  */
14997 GtkTreeViewSearchPositionFunc
14998 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14999 {
15000   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15001
15002   return tree_view->priv->search_position_func;
15003 }
15004
15005
15006 static void
15007 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15008                                   GtkTreeView *tree_view,
15009                                   GdkDevice   *device)
15010 {
15011   if (tree_view->priv->disable_popdown)
15012     return;
15013
15014   if (tree_view->priv->search_entry_changed_id)
15015     {
15016       g_signal_handler_disconnect (tree_view->priv->search_entry,
15017                                    tree_view->priv->search_entry_changed_id);
15018       tree_view->priv->search_entry_changed_id = 0;
15019     }
15020   if (tree_view->priv->typeselect_flush_timeout)
15021     {
15022       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15023       tree_view->priv->typeselect_flush_timeout = 0;
15024     }
15025
15026   if (gtk_widget_get_visible (search_dialog))
15027     {
15028       /* send focus-in event */
15029       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15030       gtk_widget_hide (search_dialog);
15031       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15032       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15033     }
15034 }
15035
15036 static void
15037 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15038                                     GtkWidget   *search_dialog,
15039                                     gpointer     user_data)
15040 {
15041   gint x, y;
15042   gint tree_x, tree_y;
15043   gint tree_width, tree_height;
15044   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15045   GdkScreen *screen = gdk_window_get_screen (tree_window);
15046   GtkRequisition requisition;
15047   gint monitor_num;
15048   GdkRectangle monitor;
15049
15050   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15051   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
15052
15053   gtk_widget_realize (search_dialog);
15054
15055   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15056   tree_width = gdk_window_get_width (tree_window);
15057   tree_height = gdk_window_get_height (tree_window);
15058   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15059
15060   if (tree_x + tree_width > gdk_screen_get_width (screen))
15061     x = gdk_screen_get_width (screen) - requisition.width;
15062   else if (tree_x + tree_width - requisition.width < 0)
15063     x = 0;
15064   else
15065     x = tree_x + tree_width - requisition.width;
15066
15067   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15068     y = gdk_screen_get_height (screen) - requisition.height;
15069   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15070     y = 0;
15071   else
15072     y = tree_y + tree_height;
15073
15074   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15075 }
15076
15077 static void
15078 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15079                                       GtkMenu  *menu,
15080                                       gpointer  data)
15081 {
15082   GtkTreeView *tree_view = (GtkTreeView *)data;
15083
15084   tree_view->priv->disable_popdown = 1;
15085   g_signal_connect (menu, "hide",
15086                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15087 }
15088
15089 /* Because we're visible but offscreen, we just set a flag in the preedit
15090  * callback.
15091  */
15092 static void
15093 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15094                                       GtkTreeView  *tree_view)
15095 {
15096   tree_view->priv->imcontext_changed = 1;
15097   if (tree_view->priv->typeselect_flush_timeout)
15098     {
15099       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15100       tree_view->priv->typeselect_flush_timeout =
15101         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15102                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15103                        tree_view);
15104     }
15105
15106 }
15107
15108 static void
15109 gtk_tree_view_search_activate (GtkEntry    *entry,
15110                                GtkTreeView *tree_view)
15111 {
15112   GtkTreePath *path;
15113
15114   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15115                                     tree_view,
15116                                     gtk_get_current_event_device ());
15117
15118   /* If we have a row selected and it's the cursor row, we activate
15119    * the row XXX */
15120   if (tree_view->priv->cursor_node &&
15121       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15122     {
15123       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15124                                              tree_view->priv->cursor_node);
15125
15126       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15127
15128       gtk_tree_path_free (path);
15129     }
15130 }
15131
15132 static gboolean
15133 gtk_tree_view_real_search_enable_popdown (gpointer data)
15134 {
15135   GtkTreeView *tree_view = (GtkTreeView *)data;
15136
15137   tree_view->priv->disable_popdown = 0;
15138
15139   return FALSE;
15140 }
15141
15142 static void
15143 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15144                                      gpointer   data)
15145 {
15146   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15147 }
15148
15149 static gboolean
15150 gtk_tree_view_search_delete_event (GtkWidget *widget,
15151                                    GdkEventAny *event,
15152                                    GtkTreeView *tree_view)
15153 {
15154   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15155
15156   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15157
15158   return TRUE;
15159 }
15160
15161 static gboolean
15162 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15163                                          GdkEventButton *event,
15164                                          GtkTreeView *tree_view)
15165 {
15166   GdkDevice *keyb_device;
15167
15168   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15169
15170   keyb_device = gdk_device_get_associated_device (event->device);
15171   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15172
15173   if (event->window == tree_view->priv->bin_window)
15174     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15175
15176   return TRUE;
15177 }
15178
15179 static gboolean
15180 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15181                                    GdkEventScroll *event,
15182                                    GtkTreeView *tree_view)
15183 {
15184   gboolean retval = FALSE;
15185
15186   if (event->direction == GDK_SCROLL_UP)
15187     {
15188       gtk_tree_view_search_move (widget, tree_view, TRUE);
15189       retval = TRUE;
15190     }
15191   else if (event->direction == GDK_SCROLL_DOWN)
15192     {
15193       gtk_tree_view_search_move (widget, tree_view, FALSE);
15194       retval = TRUE;
15195     }
15196
15197   /* renew the flush timeout */
15198   if (retval && tree_view->priv->typeselect_flush_timeout
15199       && !tree_view->priv->search_custom_entry_set)
15200     {
15201       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15202       tree_view->priv->typeselect_flush_timeout =
15203         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15204                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15205                        tree_view);
15206     }
15207
15208   return retval;
15209 }
15210
15211 static gboolean
15212 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15213                                       GdkEventKey *event,
15214                                       GtkTreeView *tree_view)
15215 {
15216   GdkModifierType default_accel;
15217   gboolean        retval = FALSE;
15218
15219   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15220   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15221
15222   /* close window and cancel the search */
15223   if (!tree_view->priv->search_custom_entry_set
15224       && (event->keyval == GDK_KEY_Escape ||
15225           event->keyval == GDK_KEY_Tab ||
15226             event->keyval == GDK_KEY_KP_Tab ||
15227             event->keyval == GDK_KEY_ISO_Left_Tab))
15228     {
15229       gtk_tree_view_search_dialog_hide (widget, tree_view,
15230                                         gdk_event_get_device ((GdkEvent *) event));
15231       return TRUE;
15232     }
15233
15234   default_accel = gtk_widget_get_modifier_mask (widget,
15235                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15236
15237   /* select previous matching iter */
15238   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15239     {
15240       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15241         gtk_widget_error_bell (widget);
15242
15243       retval = TRUE;
15244     }
15245
15246   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15247       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15248     {
15249       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15250         gtk_widget_error_bell (widget);
15251
15252       retval = TRUE;
15253     }
15254
15255   /* select next matching iter */
15256   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15257     {
15258       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15259         gtk_widget_error_bell (widget);
15260
15261       retval = TRUE;
15262     }
15263
15264   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15265       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15266     {
15267       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15268         gtk_widget_error_bell (widget);
15269
15270       retval = TRUE;
15271     }
15272
15273   /* renew the flush timeout */
15274   if (retval && tree_view->priv->typeselect_flush_timeout
15275       && !tree_view->priv->search_custom_entry_set)
15276     {
15277       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15278       tree_view->priv->typeselect_flush_timeout =
15279         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15280                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15281                        tree_view);
15282     }
15283
15284   return retval;
15285 }
15286
15287 /*  this function returns FALSE if there is a search string but
15288  *  nothing was found, and TRUE otherwise.
15289  */
15290 static gboolean
15291 gtk_tree_view_search_move (GtkWidget   *window,
15292                            GtkTreeView *tree_view,
15293                            gboolean     up)
15294 {
15295   gboolean ret;
15296   gint len;
15297   gint count = 0;
15298   const gchar *text;
15299   GtkTreeIter iter;
15300   GtkTreeModel *model;
15301   GtkTreeSelection *selection;
15302
15303   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15304
15305   g_return_val_if_fail (text != NULL, FALSE);
15306
15307   len = strlen (text);
15308
15309   if (up && tree_view->priv->selected_iter == 1)
15310     return strlen (text) < 1;
15311
15312   len = strlen (text);
15313
15314   if (len < 1)
15315     return TRUE;
15316
15317   model = gtk_tree_view_get_model (tree_view);
15318   selection = gtk_tree_view_get_selection (tree_view);
15319
15320   /* search */
15321   gtk_tree_selection_unselect_all (selection);
15322   if (!gtk_tree_model_get_iter_first (model, &iter))
15323     return TRUE;
15324
15325   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15326                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15327
15328   if (ret)
15329     {
15330       /* found */
15331       tree_view->priv->selected_iter += up?(-1):(1);
15332       return TRUE;
15333     }
15334   else
15335     {
15336       /* return to old iter */
15337       count = 0;
15338       gtk_tree_model_get_iter_first (model, &iter);
15339       gtk_tree_view_search_iter (model, selection,
15340                                  &iter, text,
15341                                  &count, tree_view->priv->selected_iter);
15342       return FALSE;
15343     }
15344 }
15345
15346 static gboolean
15347 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15348                                  gint          column,
15349                                  const gchar  *key,
15350                                  GtkTreeIter  *iter,
15351                                  gpointer      search_data)
15352 {
15353   gboolean retval = TRUE;
15354   const gchar *str;
15355   gchar *normalized_string;
15356   gchar *normalized_key;
15357   gchar *case_normalized_string = NULL;
15358   gchar *case_normalized_key = NULL;
15359   GValue value = G_VALUE_INIT;
15360   GValue transformed = G_VALUE_INIT;
15361
15362   gtk_tree_model_get_value (model, iter, column, &value);
15363
15364   g_value_init (&transformed, G_TYPE_STRING);
15365
15366   if (!g_value_transform (&value, &transformed))
15367     {
15368       g_value_unset (&value);
15369       return TRUE;
15370     }
15371
15372   g_value_unset (&value);
15373
15374   str = g_value_get_string (&transformed);
15375   if (!str)
15376     {
15377       g_value_unset (&transformed);
15378       return TRUE;
15379     }
15380
15381   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15382   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15383
15384   if (normalized_string && normalized_key)
15385     {
15386       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15387       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15388
15389       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15390         retval = FALSE;
15391     }
15392
15393   g_value_unset (&transformed);
15394   g_free (normalized_key);
15395   g_free (normalized_string);
15396   g_free (case_normalized_key);
15397   g_free (case_normalized_string);
15398
15399   return retval;
15400 }
15401
15402 static gboolean
15403 gtk_tree_view_search_iter (GtkTreeModel     *model,
15404                            GtkTreeSelection *selection,
15405                            GtkTreeIter      *iter,
15406                            const gchar      *text,
15407                            gint             *count,
15408                            gint              n)
15409 {
15410   GtkRBTree *tree = NULL;
15411   GtkRBNode *node = NULL;
15412   GtkTreePath *path;
15413
15414   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15415
15416   path = gtk_tree_model_get_path (model, iter);
15417   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15418
15419   do
15420     {
15421       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15422         {
15423           (*count)++;
15424           if (*count == n)
15425             {
15426               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15427                                             TRUE, 0.5, 0.0);
15428               gtk_tree_selection_select_iter (selection, iter);
15429               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15430
15431               if (path)
15432                 gtk_tree_path_free (path);
15433
15434               return TRUE;
15435             }
15436         }
15437
15438       if (node->children)
15439         {
15440           gboolean has_child;
15441           GtkTreeIter tmp;
15442
15443           tree = node->children;
15444           node = _gtk_rbtree_first (tree);
15445
15446           tmp = *iter;
15447           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15448           gtk_tree_path_down (path);
15449
15450           /* sanity check */
15451           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15452         }
15453       else
15454         {
15455           gboolean done = FALSE;
15456
15457           do
15458             {
15459               node = _gtk_rbtree_next (tree, node);
15460
15461               if (node)
15462                 {
15463                   gboolean has_next;
15464
15465                   has_next = gtk_tree_model_iter_next (model, iter);
15466
15467                   done = TRUE;
15468                   gtk_tree_path_next (path);
15469
15470                   /* sanity check */
15471                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15472                 }
15473               else
15474                 {
15475                   gboolean has_parent;
15476                   GtkTreeIter tmp_iter = *iter;
15477
15478                   node = tree->parent_node;
15479                   tree = tree->parent_tree;
15480
15481                   if (!tree)
15482                     {
15483                       if (path)
15484                         gtk_tree_path_free (path);
15485
15486                       /* we've run out of tree, done with this func */
15487                       return FALSE;
15488                     }
15489
15490                   has_parent = gtk_tree_model_iter_parent (model,
15491                                                            iter,
15492                                                            &tmp_iter);
15493                   gtk_tree_path_up (path);
15494
15495                   /* sanity check */
15496                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15497                 }
15498             }
15499           while (!done);
15500         }
15501     }
15502   while (1);
15503
15504   return FALSE;
15505 }
15506
15507 static void
15508 gtk_tree_view_search_init (GtkWidget   *entry,
15509                            GtkTreeView *tree_view)
15510 {
15511   gint ret;
15512   gint count = 0;
15513   const gchar *text;
15514   GtkTreeIter iter;
15515   GtkTreeModel *model;
15516   GtkTreeSelection *selection;
15517
15518   g_return_if_fail (GTK_IS_ENTRY (entry));
15519   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15520
15521   text = gtk_entry_get_text (GTK_ENTRY (entry));
15522
15523   model = gtk_tree_view_get_model (tree_view);
15524   selection = gtk_tree_view_get_selection (tree_view);
15525
15526   /* search */
15527   gtk_tree_selection_unselect_all (selection);
15528   if (tree_view->priv->typeselect_flush_timeout
15529       && !tree_view->priv->search_custom_entry_set)
15530     {
15531       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15532       tree_view->priv->typeselect_flush_timeout =
15533         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15534                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15535                        tree_view);
15536     }
15537
15538   if (*text == '\0')
15539     return;
15540
15541   if (!gtk_tree_model_get_iter_first (model, &iter))
15542     return;
15543
15544   ret = gtk_tree_view_search_iter (model, selection,
15545                                    &iter, text,
15546                                    &count, 1);
15547
15548   if (ret)
15549     tree_view->priv->selected_iter = 1;
15550 }
15551
15552 void
15553 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15554                                 GtkTreeViewColumn *column,
15555                                 GtkCellEditable   *cell_editable)
15556 {
15557   if (tree_view->priv->edited_column == NULL)
15558     return;
15559
15560   g_return_if_fail (column == tree_view->priv->edited_column);
15561
15562   tree_view->priv->edited_column = NULL;
15563
15564   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15565     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15566
15567   gtk_container_remove (GTK_CONTAINER (tree_view),
15568                         GTK_WIDGET (cell_editable));
15569
15570   /* FIXME should only redraw a single node */
15571   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15572 }
15573
15574 static gboolean
15575 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15576                              GtkTreePath *cursor_path,
15577                              gboolean     edit_only)
15578 {
15579   GtkTreeIter iter;
15580   GdkRectangle cell_area;
15581   GtkTreeViewColumn *focus_column;
15582   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15583   gint retval = FALSE;
15584   GtkRBTree *cursor_tree;
15585   GtkRBNode *cursor_node;
15586
15587   g_assert (tree_view->priv->focus_column);
15588   focus_column = tree_view->priv->focus_column;
15589
15590   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15591     return FALSE;
15592
15593   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15594       cursor_node == NULL)
15595     return FALSE;
15596
15597   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15598
15599   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15600
15601   gtk_tree_view_column_cell_set_cell_data (focus_column,
15602                                            tree_view->priv->model,
15603                                            &iter,
15604                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15605                                            cursor_node->children ? TRUE : FALSE);
15606   gtk_tree_view_get_cell_area (tree_view,
15607                                cursor_path,
15608                                focus_column,
15609                                &cell_area);
15610
15611   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15612                               _gtk_tree_view_column_get_context (focus_column),
15613                               GTK_WIDGET (tree_view),
15614                               &cell_area,
15615                               flags, edit_only))
15616     retval = TRUE;
15617
15618   return retval;
15619 }
15620
15621 void
15622 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15623                              GtkTreeViewColumn *column,
15624                              GtkTreePath       *path,
15625                              GtkCellEditable   *cell_editable,
15626                              GdkRectangle      *cell_area)
15627 {
15628   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15629   GtkRequisition requisition;
15630
15631   tree_view->priv->edited_column = column;
15632
15633   gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15634   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15635
15636   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15637                                  &requisition, NULL);
15638
15639   tree_view->priv->draw_keyfocus = TRUE;
15640
15641   if (requisition.height < cell_area->height)
15642     {
15643       gint diff = cell_area->height - requisition.height;
15644       gtk_tree_view_put (tree_view,
15645                          GTK_WIDGET (cell_editable),
15646                          cell_area->x, cell_area->y + diff/2,
15647                          cell_area->width, requisition.height);
15648     }
15649   else
15650     {
15651       gtk_tree_view_put (tree_view,
15652                          GTK_WIDGET (cell_editable),
15653                          cell_area->x, cell_area->y,
15654                          cell_area->width, cell_area->height);
15655     }
15656 }
15657
15658 static void
15659 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15660                             gboolean     cancel_editing)
15661 {
15662   GtkTreeViewColumn *column;
15663
15664   if (tree_view->priv->edited_column == NULL)
15665     return;
15666
15667   /*
15668    * This is very evil. We need to do this, because
15669    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15670    * later on. If gtk_tree_view_row_changed notices
15671    * tree_view->priv->edited_column != NULL, it'll call
15672    * gtk_tree_view_stop_editing again. Bad things will happen then.
15673    *
15674    * Please read that again if you intend to modify anything here.
15675    */
15676
15677   column = tree_view->priv->edited_column;
15678   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15679   tree_view->priv->edited_column = NULL;
15680 }
15681
15682
15683 /**
15684  * gtk_tree_view_set_hover_selection:
15685  * @tree_view: a #GtkTreeView
15686  * @hover: %TRUE to enable hover selection mode
15687  *
15688  * Enables or disables the hover selection mode of @tree_view.
15689  * Hover selection makes the selected row follow the pointer.
15690  * Currently, this works only for the selection modes
15691  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15692  *
15693  * Since: 2.6
15694  **/
15695 void
15696 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15697                                    gboolean     hover)
15698 {
15699   hover = hover != FALSE;
15700
15701   if (hover != tree_view->priv->hover_selection)
15702     {
15703       tree_view->priv->hover_selection = hover;
15704
15705       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15706     }
15707 }
15708
15709 /**
15710  * gtk_tree_view_get_hover_selection:
15711  * @tree_view: a #GtkTreeView
15712  *
15713  * Returns whether hover selection mode is turned on for @tree_view.
15714  *
15715  * Return value: %TRUE if @tree_view is in hover selection mode
15716  *
15717  * Since: 2.6
15718  **/
15719 gboolean
15720 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15721 {
15722   return tree_view->priv->hover_selection;
15723 }
15724
15725 /**
15726  * gtk_tree_view_set_hover_expand:
15727  * @tree_view: a #GtkTreeView
15728  * @expand: %TRUE to enable hover selection mode
15729  *
15730  * Enables of disables the hover expansion mode of @tree_view.
15731  * Hover expansion makes rows expand or collapse if the pointer
15732  * moves over them.
15733  *
15734  * Since: 2.6
15735  **/
15736 void
15737 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15738                                 gboolean     expand)
15739 {
15740   expand = expand != FALSE;
15741
15742   if (expand != tree_view->priv->hover_expand)
15743     {
15744       tree_view->priv->hover_expand = expand;
15745
15746       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15747     }
15748 }
15749
15750 /**
15751  * gtk_tree_view_get_hover_expand:
15752  * @tree_view: a #GtkTreeView
15753  *
15754  * Returns whether hover expansion mode is turned on for @tree_view.
15755  *
15756  * Return value: %TRUE if @tree_view is in hover expansion mode
15757  *
15758  * Since: 2.6
15759  **/
15760 gboolean
15761 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15762 {
15763   return tree_view->priv->hover_expand;
15764 }
15765
15766 /**
15767  * gtk_tree_view_set_rubber_banding:
15768  * @tree_view: a #GtkTreeView
15769  * @enable: %TRUE to enable rubber banding
15770  *
15771  * Enables or disables rubber banding in @tree_view.  If the selection mode
15772  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15773  * multiple rows by dragging the mouse.
15774  *
15775  * Since: 2.10
15776  **/
15777 void
15778 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15779                                   gboolean     enable)
15780 {
15781   enable = enable != FALSE;
15782
15783   if (enable != tree_view->priv->rubber_banding_enable)
15784     {
15785       tree_view->priv->rubber_banding_enable = enable;
15786
15787       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15788     }
15789 }
15790
15791 /**
15792  * gtk_tree_view_get_rubber_banding:
15793  * @tree_view: a #GtkTreeView
15794  *
15795  * Returns whether rubber banding is turned on for @tree_view.  If the
15796  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15797  * user to select multiple rows by dragging the mouse.
15798  *
15799  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15800  *
15801  * Since: 2.10
15802  **/
15803 gboolean
15804 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15805 {
15806   return tree_view->priv->rubber_banding_enable;
15807 }
15808
15809 /**
15810  * gtk_tree_view_is_rubber_banding_active:
15811  * @tree_view: a #GtkTreeView
15812  *
15813  * Returns whether a rubber banding operation is currently being done
15814  * in @tree_view.
15815  *
15816  * Return value: %TRUE if a rubber banding operation is currently being
15817  * done in @tree_view.
15818  *
15819  * Since: 2.12
15820  **/
15821 gboolean
15822 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15823 {
15824   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15825
15826   if (tree_view->priv->rubber_banding_enable
15827       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15828     return TRUE;
15829
15830   return FALSE;
15831 }
15832
15833 /**
15834  * gtk_tree_view_get_row_separator_func: (skip)
15835  * @tree_view: a #GtkTreeView
15836  *
15837  * Returns the current row separator function.
15838  *
15839  * Return value: the current row separator function.
15840  *
15841  * Since: 2.6
15842  **/
15843 GtkTreeViewRowSeparatorFunc
15844 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15845 {
15846   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15847
15848   return tree_view->priv->row_separator_func;
15849 }
15850
15851 /**
15852  * gtk_tree_view_set_row_separator_func:
15853  * @tree_view: a #GtkTreeView
15854  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15855  * @data: (allow-none): user data to pass to @func, or %NULL
15856  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15857  *
15858  * Sets the row separator function, which is used to determine
15859  * whether a row should be drawn as a separator. If the row separator
15860  * function is %NULL, no separators are drawn. This is the default value.
15861  *
15862  * Since: 2.6
15863  **/
15864 void
15865 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15866                                       GtkTreeViewRowSeparatorFunc  func,
15867                                       gpointer                     data,
15868                                       GDestroyNotify               destroy)
15869 {
15870   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15871
15872   if (tree_view->priv->row_separator_destroy)
15873     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15874
15875   tree_view->priv->row_separator_func = func;
15876   tree_view->priv->row_separator_data = data;
15877   tree_view->priv->row_separator_destroy = destroy;
15878
15879   /* Have the tree recalculate heights */
15880   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15881   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15882 }
15883
15884
15885 static void
15886 gtk_tree_view_grab_notify (GtkWidget *widget,
15887                            gboolean   was_grabbed)
15888 {
15889   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15890
15891   tree_view->priv->in_grab = !was_grabbed;
15892
15893   if (!was_grabbed)
15894     {
15895       tree_view->priv->pressed_button = -1;
15896
15897       if (tree_view->priv->rubber_band_status)
15898         gtk_tree_view_stop_rubber_band (tree_view);
15899     }
15900 }
15901
15902 static void
15903 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15904                                    GtkStateFlags  previous_state)
15905 {
15906   if (gtk_widget_get_realized (widget))
15907     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15908
15909   gtk_widget_queue_draw (widget);
15910 }
15911
15912 /**
15913  * gtk_tree_view_get_grid_lines:
15914  * @tree_view: a #GtkTreeView
15915  *
15916  * Returns which grid lines are enabled in @tree_view.
15917  *
15918  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15919  * are enabled.
15920  *
15921  * Since: 2.10
15922  */
15923 GtkTreeViewGridLines
15924 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15925 {
15926   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15927
15928   return tree_view->priv->grid_lines;
15929 }
15930
15931 /**
15932  * gtk_tree_view_set_grid_lines:
15933  * @tree_view: a #GtkTreeView
15934  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15935  * enable.
15936  *
15937  * Sets which grid lines to draw in @tree_view.
15938  *
15939  * Since: 2.10
15940  */
15941 void
15942 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15943                               GtkTreeViewGridLines   grid_lines)
15944 {
15945   GtkTreeViewPrivate *priv;
15946   GtkWidget *widget;
15947   GtkTreeViewGridLines old_grid_lines;
15948
15949   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15950
15951   priv = tree_view->priv;
15952   widget = GTK_WIDGET (tree_view);
15953
15954   old_grid_lines = priv->grid_lines;
15955   priv->grid_lines = grid_lines;
15956
15957   if (gtk_widget_get_realized (widget))
15958     {
15959       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15960           priv->grid_line_width)
15961         {
15962           priv->grid_line_width = 0;
15963         }
15964
15965       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15966           !priv->grid_line_width)
15967         {
15968           gint8 *dash_list;
15969
15970           gtk_widget_style_get (widget,
15971                                 "grid-line-width", &priv->grid_line_width,
15972                                 "grid-line-pattern", (gchar *)&dash_list,
15973                                 NULL);
15974
15975           if (dash_list)
15976             {
15977               priv->grid_line_dashes[0] = dash_list[0];
15978               if (dash_list[0])
15979                 priv->grid_line_dashes[1] = dash_list[1];
15980
15981               g_free (dash_list);
15982             }
15983           else
15984             {
15985               priv->grid_line_dashes[0] = 1;
15986               priv->grid_line_dashes[1] = 1;
15987             }
15988         }
15989     }
15990
15991   if (old_grid_lines != grid_lines)
15992     {
15993       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15994
15995       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15996     }
15997 }
15998
15999 /**
16000  * gtk_tree_view_get_enable_tree_lines:
16001  * @tree_view: a #GtkTreeView.
16002  *
16003  * Returns whether or not tree lines are drawn in @tree_view.
16004  *
16005  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
16006  * otherwise.
16007  *
16008  * Since: 2.10
16009  */
16010 gboolean
16011 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16012 {
16013   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16014
16015   return tree_view->priv->tree_lines_enabled;
16016 }
16017
16018 /**
16019  * gtk_tree_view_set_enable_tree_lines:
16020  * @tree_view: a #GtkTreeView
16021  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16022  *
16023  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16024  * This does not have any visible effects for lists.
16025  *
16026  * Since: 2.10
16027  */
16028 void
16029 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16030                                      gboolean     enabled)
16031 {
16032   GtkTreeViewPrivate *priv;
16033   GtkWidget *widget;
16034   gboolean was_enabled;
16035
16036   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16037
16038   enabled = enabled != FALSE;
16039
16040   priv = tree_view->priv;
16041   widget = GTK_WIDGET (tree_view);
16042
16043   was_enabled = priv->tree_lines_enabled;
16044
16045   priv->tree_lines_enabled = enabled;
16046
16047   if (gtk_widget_get_realized (widget))
16048     {
16049       if (!enabled && priv->tree_line_width)
16050         {
16051           priv->tree_line_width = 0;
16052         }
16053
16054       if (enabled && !priv->tree_line_width)
16055         {
16056           gint8 *dash_list;
16057           gtk_widget_style_get (widget,
16058                                 "tree-line-width", &priv->tree_line_width,
16059                                 "tree-line-pattern", (gchar *)&dash_list,
16060                                 NULL);
16061
16062           if (dash_list)
16063             {
16064               priv->tree_line_dashes[0] = dash_list[0];
16065               if (dash_list[0])
16066                 priv->tree_line_dashes[1] = dash_list[1];
16067
16068               g_free (dash_list);
16069             }
16070           else
16071             {
16072               priv->tree_line_dashes[0] = 1;
16073               priv->tree_line_dashes[1] = 1;
16074             }
16075         }
16076     }
16077
16078   if (was_enabled != enabled)
16079     {
16080       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16081
16082       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16083     }
16084 }
16085
16086
16087 /**
16088  * gtk_tree_view_set_show_expanders:
16089  * @tree_view: a #GtkTreeView
16090  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16091  *
16092  * Sets whether to draw and enable expanders and indent child rows in
16093  * @tree_view.  When disabled there will be no expanders visible in trees
16094  * and there will be no way to expand and collapse rows by default.  Also
16095  * note that hiding the expanders will disable the default indentation.  You
16096  * can set a custom indentation in this case using
16097  * gtk_tree_view_set_level_indentation().
16098  * This does not have any visible effects for lists.
16099  *
16100  * Since: 2.12
16101  */
16102 void
16103 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16104                                   gboolean     enabled)
16105 {
16106   gboolean was_enabled;
16107
16108   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16109
16110   enabled = enabled != FALSE;
16111   was_enabled = tree_view->priv->show_expanders;
16112
16113   tree_view->priv->show_expanders = enabled == TRUE;
16114
16115   if (enabled != was_enabled)
16116     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16117 }
16118
16119 /**
16120  * gtk_tree_view_get_show_expanders:
16121  * @tree_view: a #GtkTreeView.
16122  *
16123  * Returns whether or not expanders are drawn in @tree_view.
16124  *
16125  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16126  * otherwise.
16127  *
16128  * Since: 2.12
16129  */
16130 gboolean
16131 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16132 {
16133   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16134
16135   return tree_view->priv->show_expanders;
16136 }
16137
16138 /**
16139  * gtk_tree_view_set_level_indentation:
16140  * @tree_view: a #GtkTreeView
16141  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16142  *
16143  * Sets the amount of extra indentation for child levels to use in @tree_view
16144  * in addition to the default indentation.  The value should be specified in
16145  * pixels, a value of 0 disables this feature and in this case only the default
16146  * indentation will be used.
16147  * This does not have any visible effects for lists.
16148  *
16149  * Since: 2.12
16150  */
16151 void
16152 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16153                                      gint         indentation)
16154 {
16155   tree_view->priv->level_indentation = indentation;
16156
16157   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16158 }
16159
16160 /**
16161  * gtk_tree_view_get_level_indentation:
16162  * @tree_view: a #GtkTreeView.
16163  *
16164  * Returns the amount, in pixels, of extra indentation for child levels
16165  * in @tree_view.
16166  *
16167  * Return value: the amount of extra indentation for child levels in
16168  * @tree_view.  A return value of 0 means that this feature is disabled.
16169  *
16170  * Since: 2.12
16171  */
16172 gint
16173 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16174 {
16175   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16176
16177   return tree_view->priv->level_indentation;
16178 }
16179
16180 /**
16181  * gtk_tree_view_set_tooltip_row:
16182  * @tree_view: a #GtkTreeView
16183  * @tooltip: a #GtkTooltip
16184  * @path: a #GtkTreePath
16185  *
16186  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16187  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16188  * See also gtk_tooltip_set_tip_area().
16189  *
16190  * Since: 2.12
16191  */
16192 void
16193 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16194                                GtkTooltip  *tooltip,
16195                                GtkTreePath *path)
16196 {
16197   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16198   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16199
16200   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16201 }
16202
16203 /**
16204  * gtk_tree_view_set_tooltip_cell:
16205  * @tree_view: a #GtkTreeView
16206  * @tooltip: a #GtkTooltip
16207  * @path: (allow-none): a #GtkTreePath or %NULL
16208  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16209  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16210  *
16211  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16212  * in common.  For example if @path is %NULL and @column is set, the tip
16213  * area will be set to the full area covered by @column.  See also
16214  * gtk_tooltip_set_tip_area().
16215  *
16216  * Note that if @path is not specified and @cell is set and part of a column
16217  * containing the expander, the tooltip might not show and hide at the correct
16218  * position.  In such cases @path must be set to the current node under the
16219  * mouse cursor for this function to operate correctly.
16220  *
16221  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16222  *
16223  * Since: 2.12
16224  */
16225 void
16226 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16227                                 GtkTooltip        *tooltip,
16228                                 GtkTreePath       *path,
16229                                 GtkTreeViewColumn *column,
16230                                 GtkCellRenderer   *cell)
16231 {
16232   GtkAllocation allocation;
16233   GdkRectangle rect;
16234
16235   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16236   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16237   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16238   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16239
16240   /* Determine x values. */
16241   if (column && cell)
16242     {
16243       GdkRectangle tmp;
16244       gint start, width;
16245
16246       /* We always pass in path here, whether it is NULL or not.
16247        * For cells in expander columns path must be specified so that
16248        * we can correctly account for the indentation.  This also means
16249        * that the tooltip is constrained vertically by the "Determine y
16250        * values" code below; this is not a real problem since cells actually
16251        * don't stretch vertically in constrast to columns.
16252        */
16253       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16254       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16255
16256       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16257                                                          tmp.x + start, 0,
16258                                                          &rect.x, NULL);
16259       rect.width = width;
16260     }
16261   else if (column)
16262     {
16263       GdkRectangle tmp;
16264
16265       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16266       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16267                                                          tmp.x, 0,
16268                                                          &rect.x, NULL);
16269       rect.width = tmp.width;
16270     }
16271   else
16272     {
16273       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16274       rect.x = 0;
16275       rect.width = allocation.width;
16276     }
16277
16278   /* Determine y values. */
16279   if (path)
16280     {
16281       GdkRectangle tmp;
16282
16283       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16284       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16285                                                          0, tmp.y,
16286                                                          NULL, &rect.y);
16287       rect.height = tmp.height;
16288     }
16289   else
16290     {
16291       rect.y = 0;
16292       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16293     }
16294
16295   gtk_tooltip_set_tip_area (tooltip, &rect);
16296 }
16297
16298 /**
16299  * gtk_tree_view_get_tooltip_context:
16300  * @tree_view: a #GtkTreeView
16301  * @x: (inout): the x coordinate (relative to widget coordinates)
16302  * @y: (inout): the y coordinate (relative to widget coordinates)
16303  * @keyboard_tip: whether this is a keyboard tooltip or not
16304  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16305  *         #GtkTreeModel or %NULL
16306  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16307  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16308  *
16309  * This function is supposed to be used in a #GtkWidget::query-tooltip
16310  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16311  * which are received in the signal handler, should be passed to this
16312  * function without modification.
16313  *
16314  * The return value indicates whether there is a tree view row at the given
16315  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16316  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16317  * @model, @path and @iter which have been provided will be set to point to
16318  * that row and the corresponding model.  @x and @y will always be converted
16319  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16320  *
16321  * Return value: whether or not the given tooltip context points to a row.
16322  *
16323  * Since: 2.12
16324  */
16325 gboolean
16326 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16327                                    gint          *x,
16328                                    gint          *y,
16329                                    gboolean       keyboard_tip,
16330                                    GtkTreeModel **model,
16331                                    GtkTreePath  **path,
16332                                    GtkTreeIter   *iter)
16333 {
16334   GtkTreePath *tmppath = NULL;
16335
16336   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16337   g_return_val_if_fail (x != NULL, FALSE);
16338   g_return_val_if_fail (y != NULL, FALSE);
16339
16340   if (keyboard_tip)
16341     {
16342       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16343
16344       if (!tmppath)
16345         return FALSE;
16346     }
16347   else
16348     {
16349       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16350                                                          x, y);
16351
16352       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16353                                           &tmppath, NULL, NULL, NULL))
16354         return FALSE;
16355     }
16356
16357   if (model)
16358     *model = gtk_tree_view_get_model (tree_view);
16359
16360   if (iter)
16361     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16362                              iter, tmppath);
16363
16364   if (path)
16365     *path = tmppath;
16366   else
16367     gtk_tree_path_free (tmppath);
16368
16369   return TRUE;
16370 }
16371
16372 static gboolean
16373 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16374                                     gint        x,
16375                                     gint        y,
16376                                     gboolean    keyboard_tip,
16377                                     GtkTooltip *tooltip,
16378                                     gpointer    data)
16379 {
16380   GValue value = G_VALUE_INIT;
16381   GValue transformed = G_VALUE_INIT;
16382   GtkTreeIter iter;
16383   GtkTreePath *path;
16384   GtkTreeModel *model;
16385   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16386
16387   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16388                                           &x, &y,
16389                                           keyboard_tip,
16390                                           &model, &path, &iter))
16391     return FALSE;
16392
16393   gtk_tree_model_get_value (model, &iter,
16394                             tree_view->priv->tooltip_column, &value);
16395
16396   g_value_init (&transformed, G_TYPE_STRING);
16397
16398   if (!g_value_transform (&value, &transformed))
16399     {
16400       g_value_unset (&value);
16401       gtk_tree_path_free (path);
16402
16403       return FALSE;
16404     }
16405
16406   g_value_unset (&value);
16407
16408   if (!g_value_get_string (&transformed))
16409     {
16410       g_value_unset (&transformed);
16411       gtk_tree_path_free (path);
16412
16413       return FALSE;
16414     }
16415
16416   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16417   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16418
16419   gtk_tree_path_free (path);
16420   g_value_unset (&transformed);
16421
16422   return TRUE;
16423 }
16424
16425 /**
16426  * gtk_tree_view_set_tooltip_column:
16427  * @tree_view: a #GtkTreeView
16428  * @column: an integer, which is a valid column number for @tree_view's model
16429  *
16430  * If you only plan to have simple (text-only) tooltips on full rows, you
16431  * can use this function to have #GtkTreeView handle these automatically
16432  * for you. @column should be set to the column in @tree_view's model
16433  * containing the tooltip texts, or -1 to disable this feature.
16434  *
16435  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16436  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16437  *
16438  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16439  * so &amp;, &lt;, etc have to be escaped in the text.
16440  *
16441  * Since: 2.12
16442  */
16443 void
16444 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16445                                   gint         column)
16446 {
16447   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16448
16449   if (column == tree_view->priv->tooltip_column)
16450     return;
16451
16452   if (column == -1)
16453     {
16454       g_signal_handlers_disconnect_by_func (tree_view,
16455                                             gtk_tree_view_set_tooltip_query_cb,
16456                                             NULL);
16457       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16458     }
16459   else
16460     {
16461       if (tree_view->priv->tooltip_column == -1)
16462         {
16463           g_signal_connect (tree_view, "query-tooltip",
16464                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16465           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16466         }
16467     }
16468
16469   tree_view->priv->tooltip_column = column;
16470   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16471 }
16472
16473 /**
16474  * gtk_tree_view_get_tooltip_column:
16475  * @tree_view: a #GtkTreeView
16476  *
16477  * Returns the column of @tree_view's model which is being used for
16478  * displaying tooltips on @tree_view's rows.
16479  *
16480  * Return value: the index of the tooltip column that is currently being
16481  * used, or -1 if this is disabled.
16482  *
16483  * Since: 2.12
16484  */
16485 gint
16486 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16487 {
16488   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16489
16490   return tree_view->priv->tooltip_column;
16491 }