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 "gtkmainprivate.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkbuildable.h"
  34 #include "gtkbutton.h"
  35 #include "gtkalignment.h"
  36 #include "gtklabel.h"
  37 #include "gtkhbox.h"
  38 #include "gtkvbox.h"
  39 #include "gtkarrow.h"
  40 #include "gtkintl.h"
  41 #include "gtkbindings.h"
  42 #include "gtkcontainer.h"
  43 #include "gtkentry.h"
  44 #include "gtkframe.h"
  45 #include "gtktreemodelsort.h"
  46 #include "gtktooltip.h"
  47 #include "gtkscrollable.h"
  48 #include "gtkcelllayout.h"
  49 #include "gtkprivate.h"
  50 #include "gtkwidgetprivate.h"
  51 #include "gtkentryprivate.h"
  52 #include "gtkstylecontextprivate.h"
  53 #include "gtktypebuiltins.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  /* This lovely little value is used to determine how far away from the title bar
 156   * you can move the mouse and still have a column drag work.
 157   */
 158 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 159
 160 #ifdef __GNUC__
 161
 162 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 163      if (!(expr))                                                       \
 164        {                                                                \
 165          g_log (G_LOG_DOMAIN,                                           \
 166                 G_LOG_LEVEL_CRITICAL,                                   \
 167                 "%s (%s): assertion `%s' failed.\n"                     \
 168                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 169                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 170                 "without letting the view know.  Any display from now on is likely to\n"  \
 171                 "be incorrect.\n",                                                        \
 172                 G_STRLOC,                                               \
 173                 G_STRFUNC,                                              \
 174                 #expr);                                                 \
 175          return ret;                                                    \
 176        };                               }G_STMT_END
 177
 178 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 179      if (!(expr))                                                       \
 180        {                                                                \
 181          g_log (G_LOG_DOMAIN,                                           \
 182                 G_LOG_LEVEL_CRITICAL,                                   \
 183                 "%s (%s): assertion `%s' failed.\n"                     \
 184                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 185                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 186                 "without letting the view know.  Any display from now on is likely to\n"  \
 187                 "be incorrect.\n",                                                        \
 188                 G_STRLOC,                                               \
 189                 G_STRFUNC,                                              \
 190                 #expr);                                                 \
 191          return;                                                        \
 192        };                               }G_STMT_END
 193
 194 #else
 195
 196 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 197      if (!(expr))                                                       \
 198        {                                                                \
 199          g_log (G_LOG_DOMAIN,                                           \
 200                 G_LOG_LEVEL_CRITICAL,                                   \
 201                 "file %s: line %d: assertion `%s' failed.\n"       \
 202                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 203                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 204                 "without letting the view know.  Any display from now on is likely to\n"  \
 205                 "be incorrect.\n",                                                        \
 206                 __FILE__,                                               \
 207                 __LINE__,                                               \
 208                 #expr);                                                 \
 209          return ret;                                                    \
 210        };                               }G_STMT_END
 211
 212 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 213      if (!(expr))                                                       \
 214        {                                                                \
 215          g_log (G_LOG_DOMAIN,                                           \
 216                 G_LOG_LEVEL_CRITICAL,                                   \
 217                 "file %s: line %d: assertion '%s' failed.\n"            \
 218                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 219                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 220                 "without letting the view know.  Any display from now on is likely to\n"  \
 221                 "be incorrect.\n",                                                        \
 222                 __FILE__,                                               \
 223                 __LINE__,                                               \
 224                 #expr);                                                 \
 225          return;                                                        \
 226        };                               }G_STMT_END
 227 #endif
 228
 229 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 230 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 231 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 232 #define SCROLL_EDGE_SIZE 15
 233 #define EXPANDER_EXTRA_PADDING 4
 234 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 235 #define AUTO_EXPAND_TIMEOUT 500
 236
 237 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 238  * vice versa.
 239  */
 240 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 241 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 242
 243 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 244 struct _GtkTreeViewColumnReorder
 245 {
 246   gint left_align;
 247   gint right_align;
 248   GtkTreeViewColumn *left_column;
 249   GtkTreeViewColumn *right_column;
 250 };
 251
 252 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 253 struct _GtkTreeViewChild
 254 {
 255   GtkWidget *widget;
 256   gint x;
 257   gint y;
 258   gint width;
 259   gint height;
 260 };
 261
 262
 263 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 264 struct _TreeViewDragInfo
 265 {
 266   GdkModifierType start_button_mask;
 267   GtkTargetList *_unused_source_target_list;
 268   GdkDragAction source_actions;
 269
 270   GtkTargetList *_unused_dest_target_list;
 271
 272   guint source_set : 1;
 273   guint dest_set : 1;
 274 };
 275
 276
 277 struct _GtkTreeViewPrivate
 278 {
 279   GtkTreeModel *model;
 280
 281   /* tree information */
 282   GtkRBTree *tree;
 283
 284   /* Container info */
 285   GList *children;
 286   gint width;
 287   gint height;
 288
 289   /* Adjustments */
 290   GtkAdjustment *hadjustment;
 291   GtkAdjustment *vadjustment;
 292   gint           min_display_width;
 293   gint           min_display_height;
 294
 295   /* Sub windows */
 296   GdkWindow *bin_window;
 297   GdkWindow *header_window;
 298
 299   /* Scroll position state keeping */
 300   GtkTreeRowReference *top_row;
 301   gint top_row_dy;
 302   /* dy == y pos of top_row + top_row_dy */
 303   /* we cache it for simplicity of the code */
 304   gint dy;
 305
 306   guint presize_handler_timer;
 307   guint validate_rows_timer;
 308   guint scroll_sync_timer;
 309
 310   /* Indentation and expander layout */
 311   gint expander_size;
 312   GtkTreeViewColumn *expander_column;
 313
 314   gint level_indentation;
 315
 316   /* Key navigation (focus), selection */
 317   gint cursor_offset;
 318
 319   GtkTreeRowReference *anchor;
 320   GtkTreeRowReference *cursor;
 321
 322   GtkTreeViewColumn *focus_column;
 323
 324   /* Current pressed node, previously pressed, prelight */
 325   GtkRBNode *button_pressed_node;
 326   GtkRBTree *button_pressed_tree;
 327
 328   gint pressed_button;
 329   gint press_start_x;
 330   gint press_start_y;
 331
 332   gint event_last_x;
 333   gint event_last_y;
 334
 335   guint last_button_time;
 336   gint last_button_x;
 337   gint last_button_y;
 338
 339   GtkRBNode *prelight_node;
 340   GtkRBTree *prelight_tree;
 341
 342   /* Cell Editing */
 343   GtkTreeViewColumn *edited_column;
 344
 345   /* The node that's currently being collapsed or expanded */
 346   GtkRBNode *expanded_collapsed_node;
 347   GtkRBTree *expanded_collapsed_tree;
 348   guint expand_collapse_timeout;
 349
 350   /* Auto expand/collapse timeout in hover mode */
 351   guint auto_expand_timeout;
 352
 353   /* Selection information */
 354   GtkTreeSelection *selection;
 355
 356   /* Header information */
 357   gint n_columns;
 358   GList *columns;
 359   gint header_height;
 360
 361   GtkTreeViewColumnDropFunc column_drop_func;
 362   gpointer column_drop_func_data;
 363   GDestroyNotify column_drop_func_data_destroy;
 364   GList *column_drag_info;
 365   GtkTreeViewColumnReorder *cur_reorder;
 366
 367   gint prev_width_before_expander;
 368
 369   /* Interactive Header reordering */
 370   GdkWindow *drag_window;
 371   GdkWindow *drag_highlight_window;
 372   GtkTreeViewColumn *drag_column;
 373   gint drag_column_x;
 374
 375   /* Interactive Header Resizing */
 376   gint drag_pos;
 377   gint x_drag;
 378
 379   /* Non-interactive Header Resizing, expand flag support */
 380   gint prev_width;
 381
 382   gint last_extra_space;
 383   gint last_extra_space_per_column;
 384   gint last_number_of_expand_columns;
 385
 386   /* ATK Hack */
 387   GtkTreeDestroyCountFunc destroy_count_func;
 388   gpointer destroy_count_data;
 389   GDestroyNotify destroy_count_destroy;
 390
 391   /* Scroll timeout (e.g. during dnd, rubber banding) */
 392   guint scroll_timeout;
 393
 394   /* Row drag-and-drop */
 395   GtkTreeRowReference *drag_dest_row;
 396   GtkTreeViewDropPosition drag_dest_pos;
 397   guint open_dest_timeout;
 398
 399   /* Rubber banding */
 400   gint rubber_band_status;
 401   gint rubber_band_x;
 402   gint rubber_band_y;
 403   gint rubber_band_shift;
 404   gint rubber_band_ctrl;
 405
 406   GtkRBNode *rubber_band_start_node;
 407   GtkRBTree *rubber_band_start_tree;
 408
 409   GtkRBNode *rubber_band_end_node;
 410   GtkRBTree *rubber_band_end_tree;
 411
 412   /* fixed height */
 413   gint fixed_height;
 414
 415   /* Scroll-to functionality when unrealized */
 416   GtkTreeRowReference *scroll_to_path;
 417   GtkTreeViewColumn *scroll_to_column;
 418   gfloat scroll_to_row_align;
 419   gfloat scroll_to_col_align;
 420
 421   /* Interactive search */
 422   gint selected_iter;
 423   gint search_column;
 424   GtkTreeViewSearchPositionFunc search_position_func;
 425   GtkTreeViewSearchEqualFunc search_equal_func;
 426   gpointer search_user_data;
 427   GDestroyNotify search_destroy;
 428   gpointer search_position_user_data;
 429   GDestroyNotify search_position_destroy;
 430   GtkWidget *search_window;
 431   GtkWidget *search_entry;
 432   gulong search_entry_changed_id;
 433   guint typeselect_flush_timeout;
 434
 435   /* Grid and tree lines */
 436   GtkTreeViewGridLines grid_lines;
 437   double grid_line_dashes[2];
 438   int grid_line_width;
 439
 440   gboolean tree_lines_enabled;
 441   double tree_line_dashes[2];
 442   int tree_line_width;
 443
 444   /* Row separators */
 445   GtkTreeViewRowSeparatorFunc row_separator_func;
 446   gpointer row_separator_data;
 447   GDestroyNotify row_separator_destroy;
 448
 449   /* Tooltip support */
 450   gint tooltip_column;
 451
 452   /* Here comes the bitfield */
 453   guint scroll_to_use_align : 1;
 454
 455   guint fixed_height_mode : 1;
 456   guint fixed_height_check : 1;
 457
 458   guint reorderable : 1;
 459   guint header_has_focus : 1;
 460   guint drag_column_window_state : 3;
 461   /* hint to display rows in alternating colors */
 462   guint has_rules : 1;
 463   guint mark_rows_col_dirty : 1;
 464
 465   /* for DnD */
 466   guint empty_view_drop : 1;
 467
 468   guint ctrl_pressed : 1;
 469   guint shift_pressed : 1;
 470
 471   guint init_hadjust_value : 1;
 472
 473   guint in_top_row_to_dy : 1;
 474
 475   /* interactive search */
 476   guint enable_search : 1;
 477   guint disable_popdown : 1;
 478   guint search_custom_entry_set : 1;
 479
 480   guint hover_selection : 1;
 481   guint hover_expand : 1;
 482   guint imcontext_changed : 1;
 483
 484   guint rubber_banding_enable : 1;
 485
 486   guint in_grab : 1;
 487
 488   guint post_validation_flag : 1;
 489
 490   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 491   guint search_entry_avoid_unhandled_binding : 1;
 492
 493   /* GtkScrollablePolicy needs to be checked when
 494    * driving the scrollable adjustment values */
 495   guint hscroll_policy : 1;
 496   guint vscroll_policy : 1;
 497
 498   /* GtkTreeView flags */
 499   guint is_list : 1;
 500   guint show_expanders : 1;
 501   guint in_column_resize : 1;
 502   guint arrow_prelit : 1;
 503   guint headers_visible : 1;
 504   guint draw_keyfocus : 1;
 505   guint model_setup : 1;
 506   guint in_column_drag : 1;
 507 };
 508
 509
 510 /* Signals */
 511 enum
 512 {
 513   ROW_ACTIVATED,
 514   TEST_EXPAND_ROW,
 515   TEST_COLLAPSE_ROW,
 516   ROW_EXPANDED,
 517   ROW_COLLAPSED,
 518   COLUMNS_CHANGED,
 519   CURSOR_CHANGED,
 520   MOVE_CURSOR,
 521   SELECT_ALL,
 522   UNSELECT_ALL,
 523   SELECT_CURSOR_ROW,
 524   TOGGLE_CURSOR_ROW,
 525   EXPAND_COLLAPSE_CURSOR_ROW,
 526   SELECT_CURSOR_PARENT,
 527   START_INTERACTIVE_SEARCH,
 528   LAST_SIGNAL
 529 };
 530
 531 /* Properties */
 532 enum {
 533   PROP_0,
 534   PROP_MODEL,
 535   PROP_HADJUSTMENT,
 536   PROP_VADJUSTMENT,
 537   PROP_HSCROLL_POLICY,
 538   PROP_VSCROLL_POLICY,
 539   PROP_HEADERS_VISIBLE,
 540   PROP_HEADERS_CLICKABLE,
 541   PROP_EXPANDER_COLUMN,
 542   PROP_REORDERABLE,
 543   PROP_RULES_HINT,
 544   PROP_ENABLE_SEARCH,
 545   PROP_SEARCH_COLUMN,
 546   PROP_FIXED_HEIGHT_MODE,
 547   PROP_HOVER_SELECTION,
 548   PROP_HOVER_EXPAND,
 549   PROP_SHOW_EXPANDERS,
 550   PROP_LEVEL_INDENTATION,
 551   PROP_RUBBER_BANDING,
 552   PROP_ENABLE_GRID_LINES,
 553   PROP_ENABLE_TREE_LINES,
 554   PROP_TOOLTIP_COLUMN
 555 };
 556
 557 /* object signals */
 558 static void     gtk_tree_view_finalize             (GObject          *object);
 559 static void     gtk_tree_view_set_property         (GObject         *object,
 560                                                     guint            prop_id,
 561                                                     const GValue    *value,
 562                                                     GParamSpec      *pspec);
 563 static void     gtk_tree_view_get_property         (GObject         *object,
 564                                                     guint            prop_id,
 565                                                     GValue          *value,
 566                                                     GParamSpec      *pspec);
 567
 568 /* gtkwidget signals */
 569 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 570 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 571 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 572 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 573 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 574                                                     gint             *minimum,
 575                                                     gint             *natural);
 576 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 577                                                     gint             *minimum,
 578                                                     gint             *natural);
 579 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 580                                                     GtkRequisition   *requisition,
 581                                                     gboolean          may_validate);
 582 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 583                                                     GtkAllocation    *allocation);
 584 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 585                                                     cairo_t          *cr);
 586 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 587                                                     GdkEventKey      *event);
 588 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 589                                                     GdkEventKey      *event);
 590 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 591                                                     GdkEventMotion   *event);
 592 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 593                                                     GdkEventCrossing *event);
 594 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 595                                                     GdkEventCrossing *event);
 596 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 597                                                     GdkEventButton   *event);
 598 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 599                                                     GdkEventButton   *event);
 600 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 601                                                     GdkEventGrabBroken *event);
 602 #if 0
 603 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 604                                                     GdkEventConfigure *event);
 605 #endif
 606
 607 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 608                                                          GtkWidget    *child);
 609
 610 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 611                                                     GtkWidget        *child);
 612 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 613                                                     GdkEventFocus    *event);
 614 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 615                                                     GtkDirectionType  direction);
 616 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 617 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 618 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 619                                                     gboolean          was_grabbed);
 620 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 621                                                     GtkStateFlags     previous_state);
 622
 623 /* container signals */
 624 static void     gtk_tree_view_remove               (GtkContainer     *container,
 625                                                     GtkWidget        *widget);
 626 static void     gtk_tree_view_forall               (GtkContainer     *container,
 627                                                     gboolean          include_internals,
 628                                                     GtkCallback       callback,
 629                                                     gpointer          callback_data);
 630
 631 /* Source side drag signals */
 632 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 633                                             GdkDragContext   *context);
 634 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 635                                             GdkDragContext   *context);
 636 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 637                                             GdkDragContext   *context,
 638                                             GtkSelectionData *selection_data,
 639                                             guint             info,
 640                                             guint             time);
 641 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643
 644 /* Target side drag signals */
 645 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 646                                                   GdkDragContext   *context,
 647                                                   guint             time);
 648 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 649                                                   GdkDragContext   *context,
 650                                                   gint              x,
 651                                                   gint              y,
 652                                                   guint             time);
 653 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 654                                                   GdkDragContext   *context,
 655                                                   gint              x,
 656                                                   gint              y,
 657                                                   guint             time);
 658 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 659                                                   GdkDragContext   *context,
 660                                                   gint              x,
 661                                                   gint              y,
 662                                                   GtkSelectionData *selection_data,
 663                                                   guint             info,
 664                                                   guint             time);
 665
 666 /* tree_model signals */
 667 static void     gtk_tree_view_set_hadjustment             (GtkTreeView     *tree_view,
 668                                                            GtkAdjustment   *adjustment);
 669 static void     gtk_tree_view_set_vadjustment             (GtkTreeView     *tree_view,
 670                                                            GtkAdjustment   *adjustment);
 671 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 672                                                            GtkMovementStep  step,
 673                                                            gint             count);
 674 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 675 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 676 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 677                                                            gboolean         start_editing);
 678 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 680                                                                gboolean         logical,
 681                                                                gboolean         expand,
 682                                                                gboolean         open_all);
 683 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 684 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 685                                                            GtkTreePath     *path,
 686                                                            GtkTreeIter     *iter,
 687                                                            gpointer         data);
 688 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 689                                                            GtkTreePath     *path,
 690                                                            GtkTreeIter     *iter,
 691                                                            gpointer         data);
 692 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 693                                                            GtkTreePath     *path,
 694                                                            GtkTreeIter     *iter,
 695                                                            gpointer         data);
 696 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 697                                                            GtkTreePath     *path,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 700                                                            GtkTreePath     *parent,
 701                                                            GtkTreeIter     *iter,
 702                                                            gint            *new_order,
 703                                                            gpointer         data);
 704
 705 /* Incremental reflow */
 706 static gboolean validate_row             (GtkTreeView *tree_view,
 707                                           GtkRBTree   *tree,
 708                                           GtkRBNode   *node,
 709                                           GtkTreeIter *iter,
 710                                           GtkTreePath *path);
 711 static void     validate_visible_area    (GtkTreeView *tree_view);
 712 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 713 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 714                                           gboolean     size_request);
 715 static gboolean validate_rows            (GtkTreeView *tree_view);
 716 static gboolean presize_handler_callback (gpointer     data);
 717 static void     install_presize_handler  (GtkTreeView *tree_view);
 718 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 719 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 720                                              GtkTreePath *path,
 721                                              gint         offset);
 722 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 723 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 724 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 725
 726 /* Internal functions */
 727 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 728                                                               GtkTreeViewColumn  *column);
 729 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 730 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 731                                                               guint               keyval,
 732                                                               guint               modmask,
 733                                                               gboolean            add_shifted_binding,
 734                                                               GtkMovementStep     step,
 735                                                               gint                count);
 736 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 737                                                               GtkRBTree          *tree);
 738 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 739                                                               GtkTreePath        *path,
 740                                                               const GdkRectangle *clip_rect);
 741 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 742                                                               GtkRBTree          *tree,
 743                                                               GtkRBNode          *node);
 744 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 745                                                               cairo_t            *cr,
 746                                                               GtkRBTree          *tree,
 747                                                               GtkRBNode          *node,
 748                                                               gint                x,
 749                                                               gint                y);
 750 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 751                                                               GtkRBTree          *tree,
 752                                                               gint               *x1,
 753                                                               gint               *x2);
 754 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 755                                                               gint                i,
 756                                                               gint               *x);
 757 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 758                                                               GtkTreeView        *tree_view);
 759 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 760                                                               GtkRBTree          *tree,
 761                                                               GtkTreeIter        *iter,
 762                                                               gint                depth,
 763                                                               gboolean            recurse);
 764 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 765                                                               GtkRBTree          *tree,
 766                                                               GtkRBNode          *node);
 767 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 768                                                               GtkTreeViewColumn  *column,
 769                                                               gboolean            focus_to_cell);
 770 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 771                                                               GdkEventMotion     *event);
 772 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 773 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 774                                                               gint                count);
 775 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 776                                                               gint                count);
 777 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 778                                                               gint                count);
 779 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 780                                                               gint                count);
 781 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 782                                                               GtkTreePath        *path,
 783                                                               GtkRBTree          *tree,
 784                                                               GtkRBNode          *node,
 785                                                               gboolean            animate);
 786 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 787                                                               GtkTreePath        *path,
 788                                                               GtkRBTree          *tree,
 789                                                               GtkRBNode          *node,
 790                                                               gboolean            open_all,
 791                                                               gboolean            animate);
 792 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 793                                                               GtkTreePath        *path,
 794                                                               gboolean            clear_and_select,
 795                                                               gboolean            clamp_node);
 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
 897 static gboolean scroll_row_timeout                   (gpointer     data);
 898 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 899 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 900
 901 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 902
 903 \f
 904
 905 /* GType Methods
 906  */
 907
 908 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 909                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 910                                                 gtk_tree_view_buildable_init)
 911                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 912
 913 static void
 914 gtk_tree_view_class_init (GtkTreeViewClass *class)
 915 {
 916   GObjectClass *o_class;
 917   GtkWidgetClass *widget_class;
 918   GtkContainerClass *container_class;
 919   GtkBindingSet *binding_set;
 920
 921   binding_set = gtk_binding_set_by_class (class);
 922
 923   o_class = (GObjectClass *) class;
 924   widget_class = (GtkWidgetClass *) class;
 925   container_class = (GtkContainerClass *) class;
 926
 927   /* GObject signals */
 928   o_class->set_property = gtk_tree_view_set_property;
 929   o_class->get_property = gtk_tree_view_get_property;
 930   o_class->finalize = gtk_tree_view_finalize;
 931
 932   /* GtkWidget signals */
 933   widget_class->destroy = gtk_tree_view_destroy;
 934   widget_class->map = gtk_tree_view_map;
 935   widget_class->realize = gtk_tree_view_realize;
 936   widget_class->unrealize = gtk_tree_view_unrealize;
 937   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 938   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 939   widget_class->size_allocate = gtk_tree_view_size_allocate;
 940   widget_class->button_press_event = gtk_tree_view_button_press;
 941   widget_class->button_release_event = gtk_tree_view_button_release;
 942   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 943   /*widget_class->configure_event = gtk_tree_view_configure;*/
 944   widget_class->motion_notify_event = gtk_tree_view_motion;
 945   widget_class->draw = gtk_tree_view_draw;
 946   widget_class->key_press_event = gtk_tree_view_key_press;
 947   widget_class->key_release_event = gtk_tree_view_key_release;
 948   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 949   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 950   widget_class->focus_out_event = gtk_tree_view_focus_out;
 951   widget_class->drag_begin = gtk_tree_view_drag_begin;
 952   widget_class->drag_end = gtk_tree_view_drag_end;
 953   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 954   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 955   widget_class->drag_leave = gtk_tree_view_drag_leave;
 956   widget_class->drag_motion = gtk_tree_view_drag_motion;
 957   widget_class->drag_drop = gtk_tree_view_drag_drop;
 958   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 959   widget_class->focus = gtk_tree_view_focus;
 960   widget_class->grab_focus = gtk_tree_view_grab_focus;
 961   widget_class->style_updated = gtk_tree_view_style_updated;
 962   widget_class->grab_notify = gtk_tree_view_grab_notify;
 963   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 964
 965   /* GtkContainer signals */
 966   container_class->remove = gtk_tree_view_remove;
 967   container_class->forall = gtk_tree_view_forall;
 968   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 969   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 970
 971   class->move_cursor = gtk_tree_view_real_move_cursor;
 972   class->select_all = gtk_tree_view_real_select_all;
 973   class->unselect_all = gtk_tree_view_real_unselect_all;
 974   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 975   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 976   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 977   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 978   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 979
 980   /* Properties */
 981
 982   g_object_class_install_property (o_class,
 983                                    PROP_MODEL,
 984                                    g_param_spec_object ("model",
 985                                                         P_("TreeView Model"),
 986                                                         P_("The model for the tree view"),
 987                                                         GTK_TYPE_TREE_MODEL,
 988                                                         GTK_PARAM_READWRITE));
 989
 990   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 991   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 992   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 993   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
 994
 995   g_object_class_install_property (o_class,
 996                                    PROP_HEADERS_VISIBLE,
 997                                    g_param_spec_boolean ("headers-visible",
 998                                                          P_("Headers Visible"),
 999                                                          P_("Show the column header buttons"),
1000                                                          TRUE,
1001                                                          GTK_PARAM_READWRITE));
1002
1003   g_object_class_install_property (o_class,
1004                                    PROP_HEADERS_CLICKABLE,
1005                                    g_param_spec_boolean ("headers-clickable",
1006                                                          P_("Headers Clickable"),
1007                                                          P_("Column headers respond to click events"),
1008                                                          TRUE,
1009                                                          GTK_PARAM_READWRITE));
1010
1011   g_object_class_install_property (o_class,
1012                                    PROP_EXPANDER_COLUMN,
1013                                    g_param_spec_object ("expander-column",
1014                                                         P_("Expander Column"),
1015                                                         P_("Set the column for the expander column"),
1016                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1017                                                         GTK_PARAM_READWRITE));
1018
1019   g_object_class_install_property (o_class,
1020                                    PROP_REORDERABLE,
1021                                    g_param_spec_boolean ("reorderable",
1022                                                          P_("Reorderable"),
1023                                                          P_("View is reorderable"),
1024                                                          FALSE,
1025                                                          GTK_PARAM_READWRITE));
1026
1027   g_object_class_install_property (o_class,
1028                                    PROP_RULES_HINT,
1029                                    g_param_spec_boolean ("rules-hint",
1030                                                          P_("Rules Hint"),
1031                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1032                                                          FALSE,
1033                                                          GTK_PARAM_READWRITE));
1034
1035     g_object_class_install_property (o_class,
1036                                      PROP_ENABLE_SEARCH,
1037                                      g_param_spec_boolean ("enable-search",
1038                                                            P_("Enable Search"),
1039                                                            P_("View allows user to search through columns interactively"),
1040                                                            TRUE,
1041                                                            GTK_PARAM_READWRITE));
1042
1043     g_object_class_install_property (o_class,
1044                                      PROP_SEARCH_COLUMN,
1045                                      g_param_spec_int ("search-column",
1046                                                        P_("Search Column"),
1047                                                        P_("Model column to search through during interactive search"),
1048                                                        -1,
1049                                                        G_MAXINT,
1050                                                        -1,
1051                                                        GTK_PARAM_READWRITE));
1052
1053     /**
1054      * GtkTreeView:fixed-height-mode:
1055      *
1056      * Setting the ::fixed-height-mode property to %TRUE speeds up
1057      * #GtkTreeView by assuming that all rows have the same height.
1058      * Only enable this option if all rows are the same height.
1059      * Please see gtk_tree_view_set_fixed_height_mode() for more
1060      * information on this option.
1061      *
1062      * Since: 2.4
1063      **/
1064     g_object_class_install_property (o_class,
1065                                      PROP_FIXED_HEIGHT_MODE,
1066                                      g_param_spec_boolean ("fixed-height-mode",
1067                                                            P_("Fixed Height Mode"),
1068                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1069                                                            FALSE,
1070                                                            GTK_PARAM_READWRITE));
1071
1072     /**
1073      * GtkTreeView:hover-selection:
1074      *
1075      * Enables or disables the hover selection mode of @tree_view.
1076      * Hover selection makes the selected row follow the pointer.
1077      * Currently, this works only for the selection modes
1078      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1079      *
1080      * This mode is primarily intended for treeviews in popups, e.g.
1081      * in #GtkComboBox or #GtkEntryCompletion.
1082      *
1083      * Since: 2.6
1084      */
1085     g_object_class_install_property (o_class,
1086                                      PROP_HOVER_SELECTION,
1087                                      g_param_spec_boolean ("hover-selection",
1088                                                            P_("Hover Selection"),
1089                                                            P_("Whether the selection should follow the pointer"),
1090                                                            FALSE,
1091                                                            GTK_PARAM_READWRITE));
1092
1093     /**
1094      * GtkTreeView:hover-expand:
1095      *
1096      * Enables or disables the hover expansion mode of @tree_view.
1097      * Hover expansion makes rows expand or collapse if the pointer moves
1098      * over them.
1099      *
1100      * This mode is primarily intended for treeviews in popups, e.g.
1101      * in #GtkComboBox or #GtkEntryCompletion.
1102      *
1103      * Since: 2.6
1104      */
1105     g_object_class_install_property (o_class,
1106                                      PROP_HOVER_EXPAND,
1107                                      g_param_spec_boolean ("hover-expand",
1108                                                            P_("Hover Expand"),
1109                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1110                                                            FALSE,
1111                                                            GTK_PARAM_READWRITE));
1112
1113     /**
1114      * GtkTreeView:show-expanders:
1115      *
1116      * %TRUE if the view has expanders.
1117      *
1118      * Since: 2.12
1119      */
1120     g_object_class_install_property (o_class,
1121                                      PROP_SHOW_EXPANDERS,
1122                                      g_param_spec_boolean ("show-expanders",
1123                                                            P_("Show Expanders"),
1124                                                            P_("View has expanders"),
1125                                                            TRUE,
1126                                                            GTK_PARAM_READWRITE));
1127
1128     /**
1129      * GtkTreeView:level-indentation:
1130      *
1131      * Extra indentation for each level.
1132      *
1133      * Since: 2.12
1134      */
1135     g_object_class_install_property (o_class,
1136                                      PROP_LEVEL_INDENTATION,
1137                                      g_param_spec_int ("level-indentation",
1138                                                        P_("Level Indentation"),
1139                                                        P_("Extra indentation for each level"),
1140                                                        0,
1141                                                        G_MAXINT,
1142                                                        0,
1143                                                        GTK_PARAM_READWRITE));
1144
1145     g_object_class_install_property (o_class,
1146                                      PROP_RUBBER_BANDING,
1147                                      g_param_spec_boolean ("rubber-banding",
1148                                                            P_("Rubber Banding"),
1149                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1150                                                            FALSE,
1151                                                            GTK_PARAM_READWRITE));
1152
1153     g_object_class_install_property (o_class,
1154                                      PROP_ENABLE_GRID_LINES,
1155                                      g_param_spec_enum ("enable-grid-lines",
1156                                                         P_("Enable Grid Lines"),
1157                                                         P_("Whether grid lines should be drawn in the tree view"),
1158                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1159                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1160                                                         GTK_PARAM_READWRITE));
1161
1162     g_object_class_install_property (o_class,
1163                                      PROP_ENABLE_TREE_LINES,
1164                                      g_param_spec_boolean ("enable-tree-lines",
1165                                                            P_("Enable Tree Lines"),
1166                                                            P_("Whether tree lines should be drawn in the tree view"),
1167                                                            FALSE,
1168                                                            GTK_PARAM_READWRITE));
1169
1170     g_object_class_install_property (o_class,
1171                                      PROP_TOOLTIP_COLUMN,
1172                                      g_param_spec_int ("tooltip-column",
1173                                                        P_("Tooltip Column"),
1174                                                        P_("The column in the model containing the tooltip texts for the rows"),
1175                                                        -1,
1176                                                        G_MAXINT,
1177                                                        -1,
1178                                                        GTK_PARAM_READWRITE));
1179
1180   /* Style properties */
1181 #define _TREE_VIEW_EXPANDER_SIZE 14
1182 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1183 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1184
1185   gtk_widget_class_install_style_property (widget_class,
1186                                            g_param_spec_int ("expander-size",
1187                                                              P_("Expander Size"),
1188                                                              P_("Size of the expander arrow"),
1189                                                              0,
1190                                                              G_MAXINT,
1191                                                              _TREE_VIEW_EXPANDER_SIZE,
1192                                                              GTK_PARAM_READABLE));
1193
1194   gtk_widget_class_install_style_property (widget_class,
1195                                            g_param_spec_int ("vertical-separator",
1196                                                              P_("Vertical Separator Width"),
1197                                                              P_("Vertical space between cells.  Must be an even number"),
1198                                                              0,
1199                                                              G_MAXINT,
1200                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1201                                                              GTK_PARAM_READABLE));
1202
1203   gtk_widget_class_install_style_property (widget_class,
1204                                            g_param_spec_int ("horizontal-separator",
1205                                                              P_("Horizontal Separator Width"),
1206                                                              P_("Horizontal space between cells.  Must be an even number"),
1207                                                              0,
1208                                                              G_MAXINT,
1209                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1210                                                              GTK_PARAM_READABLE));
1211
1212   gtk_widget_class_install_style_property (widget_class,
1213                                            g_param_spec_boolean ("allow-rules",
1214                                                                  P_("Allow Rules"),
1215                                                                  P_("Allow drawing of alternating color rows"),
1216                                                                  TRUE,
1217                                                                  GTK_PARAM_READABLE));
1218
1219   gtk_widget_class_install_style_property (widget_class,
1220                                            g_param_spec_boolean ("indent-expanders",
1221                                                                  P_("Indent Expanders"),
1222                                                                  P_("Make the expanders indented"),
1223                                                                  TRUE,
1224                                                                  GTK_PARAM_READABLE));
1225
1226   gtk_widget_class_install_style_property (widget_class,
1227                                            g_param_spec_boxed ("even-row-color",
1228                                                                P_("Even Row Color"),
1229                                                                P_("Color to use for even rows"),
1230                                                                GDK_TYPE_COLOR,
1231                                                                GTK_PARAM_READABLE));
1232
1233   gtk_widget_class_install_style_property (widget_class,
1234                                            g_param_spec_boxed ("odd-row-color",
1235                                                                P_("Odd Row Color"),
1236                                                                P_("Color to use for odd rows"),
1237                                                                GDK_TYPE_COLOR,
1238                                                                GTK_PARAM_READABLE));
1239
1240   gtk_widget_class_install_style_property (widget_class,
1241                                            g_param_spec_int ("grid-line-width",
1242                                                              P_("Grid line width"),
1243                                                              P_("Width, in pixels, of the tree view grid lines"),
1244                                                              0, G_MAXINT, 1,
1245                                                              GTK_PARAM_READABLE));
1246
1247   gtk_widget_class_install_style_property (widget_class,
1248                                            g_param_spec_int ("tree-line-width",
1249                                                              P_("Tree line width"),
1250                                                              P_("Width, in pixels, of the tree view lines"),
1251                                                              0, G_MAXINT, 1,
1252                                                              GTK_PARAM_READABLE));
1253
1254   gtk_widget_class_install_style_property (widget_class,
1255                                            g_param_spec_string ("grid-line-pattern",
1256                                                                 P_("Grid line pattern"),
1257                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1258                                                                 "\1\1",
1259                                                                 GTK_PARAM_READABLE));
1260
1261   gtk_widget_class_install_style_property (widget_class,
1262                                            g_param_spec_string ("tree-line-pattern",
1263                                                                 P_("Tree line pattern"),
1264                                                                 P_("Dash pattern used to draw the tree view lines"),
1265                                                                 "\1\1",
1266                                                                 GTK_PARAM_READABLE));
1267
1268   /* Signals */
1269   /**
1270    * GtkTreeView::row-activated:
1271    * @tree_view: the object on which the signal is emitted
1272    * @path: the #GtkTreePath for the activated row
1273    * @column: the #GtkTreeViewColumn in which the activation occurred
1274    *
1275    * The "row-activated" signal is emitted when the method
1276    * gtk_tree_view_row_activated() is called or the user double clicks
1277    * a treeview row. It is also emitted when a non-editable row is
1278    * selected and one of the keys: Space, Shift+Space, Return or
1279    * Enter is pressed.
1280    *
1281    * For selection handling refer to the <link linkend="TreeWidget">tree
1282    * widget conceptual overview</link> as well as #GtkTreeSelection.
1283    */
1284   tree_view_signals[ROW_ACTIVATED] =
1285     g_signal_new (I_("row-activated"),
1286                   G_TYPE_FROM_CLASS (o_class),
1287                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1288                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1289                   NULL, NULL,
1290                   _gtk_marshal_VOID__BOXED_OBJECT,
1291                   G_TYPE_NONE, 2,
1292                   GTK_TYPE_TREE_PATH,
1293                   GTK_TYPE_TREE_VIEW_COLUMN);
1294
1295   /**
1296    * GtkTreeView::test-expand-row:
1297    * @tree_view: the object on which the signal is emitted
1298    * @iter: the tree iter of the row to expand
1299    * @path: a tree path that points to the row
1300    *
1301    * The given row is about to be expanded (show its children nodes). Use this
1302    * signal if you need to control the expandability of individual rows.
1303    *
1304    * Returns: %FALSE to allow expansion, %TRUE to reject
1305    */
1306   tree_view_signals[TEST_EXPAND_ROW] =
1307     g_signal_new (I_("test-expand-row"),
1308                   G_TYPE_FROM_CLASS (o_class),
1309                   G_SIGNAL_RUN_LAST,
1310                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1311                   _gtk_boolean_handled_accumulator, NULL,
1312                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1313                   G_TYPE_BOOLEAN, 2,
1314                   GTK_TYPE_TREE_ITER,
1315                   GTK_TYPE_TREE_PATH);
1316
1317   /**
1318    * GtkTreeView::test-collapse-row:
1319    * @tree_view: the object on which the signal is emitted
1320    * @iter: the tree iter of the row to collapse
1321    * @path: a tree path that points to the row
1322    *
1323    * The given row is about to be collapsed (hide its children nodes). Use this
1324    * signal if you need to control the collapsibility of individual rows.
1325    *
1326    * Returns: %FALSE to allow collapsing, %TRUE to reject
1327    */
1328   tree_view_signals[TEST_COLLAPSE_ROW] =
1329     g_signal_new (I_("test-collapse-row"),
1330                   G_TYPE_FROM_CLASS (o_class),
1331                   G_SIGNAL_RUN_LAST,
1332                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1333                   _gtk_boolean_handled_accumulator, NULL,
1334                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1335                   G_TYPE_BOOLEAN, 2,
1336                   GTK_TYPE_TREE_ITER,
1337                   GTK_TYPE_TREE_PATH);
1338
1339   /**
1340    * GtkTreeView::row-expanded:
1341    * @tree_view: the object on which the signal is emitted
1342    * @iter: the tree iter of the expanded row
1343    * @path: a tree path that points to the row
1344    *
1345    * The given row has been expanded (child nodes are shown).
1346    */
1347   tree_view_signals[ROW_EXPANDED] =
1348     g_signal_new (I_("row-expanded"),
1349                   G_TYPE_FROM_CLASS (o_class),
1350                   G_SIGNAL_RUN_LAST,
1351                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1352                   NULL, NULL,
1353                   _gtk_marshal_VOID__BOXED_BOXED,
1354                   G_TYPE_NONE, 2,
1355                   GTK_TYPE_TREE_ITER,
1356                   GTK_TYPE_TREE_PATH);
1357
1358   /**
1359    * GtkTreeView::row-collapsed:
1360    * @tree_view: the object on which the signal is emitted
1361    * @iter: the tree iter of the collapsed row
1362    * @path: a tree path that points to the row
1363    *
1364    * The given row has been collapsed (child nodes are hidden).
1365    */
1366   tree_view_signals[ROW_COLLAPSED] =
1367     g_signal_new (I_("row-collapsed"),
1368                   G_TYPE_FROM_CLASS (o_class),
1369                   G_SIGNAL_RUN_LAST,
1370                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1371                   NULL, NULL,
1372                   _gtk_marshal_VOID__BOXED_BOXED,
1373                   G_TYPE_NONE, 2,
1374                   GTK_TYPE_TREE_ITER,
1375                   GTK_TYPE_TREE_PATH);
1376
1377   /**
1378    * GtkTreeView::columns-changed:
1379    * @tree_view: the object on which the signal is emitted
1380    *
1381    * The number of columns of the treeview has changed.
1382    */
1383   tree_view_signals[COLUMNS_CHANGED] =
1384     g_signal_new (I_("columns-changed"),
1385                   G_TYPE_FROM_CLASS (o_class),
1386                   G_SIGNAL_RUN_LAST,
1387                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1388                   NULL, NULL,
1389                   _gtk_marshal_VOID__VOID,
1390                   G_TYPE_NONE, 0);
1391
1392   /**
1393    * GtkTreeView::cursor-changed:
1394    * @tree_view: the object on which the signal is emitted
1395    *
1396    * The position of the cursor (focused cell) has changed.
1397    */
1398   tree_view_signals[CURSOR_CHANGED] =
1399     g_signal_new (I_("cursor-changed"),
1400                   G_TYPE_FROM_CLASS (o_class),
1401                   G_SIGNAL_RUN_LAST,
1402                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1403                   NULL, NULL,
1404                   _gtk_marshal_VOID__VOID,
1405                   G_TYPE_NONE, 0);
1406
1407   tree_view_signals[MOVE_CURSOR] =
1408     g_signal_new (I_("move-cursor"),
1409                   G_TYPE_FROM_CLASS (o_class),
1410                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1411                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1412                   NULL, NULL,
1413                   _gtk_marshal_BOOLEAN__ENUM_INT,
1414                   G_TYPE_BOOLEAN, 2,
1415                   GTK_TYPE_MOVEMENT_STEP,
1416                   G_TYPE_INT);
1417
1418   tree_view_signals[SELECT_ALL] =
1419     g_signal_new (I_("select-all"),
1420                   G_TYPE_FROM_CLASS (o_class),
1421                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1422                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1423                   NULL, NULL,
1424                   _gtk_marshal_BOOLEAN__VOID,
1425                   G_TYPE_BOOLEAN, 0);
1426
1427   tree_view_signals[UNSELECT_ALL] =
1428     g_signal_new (I_("unselect-all"),
1429                   G_TYPE_FROM_CLASS (o_class),
1430                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1431                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1432                   NULL, NULL,
1433                   _gtk_marshal_BOOLEAN__VOID,
1434                   G_TYPE_BOOLEAN, 0);
1435
1436   tree_view_signals[SELECT_CURSOR_ROW] =
1437     g_signal_new (I_("select-cursor-row"),
1438                   G_TYPE_FROM_CLASS (o_class),
1439                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1440                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1441                   NULL, NULL,
1442                   _gtk_marshal_BOOLEAN__BOOLEAN,
1443                   G_TYPE_BOOLEAN, 1,
1444                   G_TYPE_BOOLEAN);
1445
1446   tree_view_signals[TOGGLE_CURSOR_ROW] =
1447     g_signal_new (I_("toggle-cursor-row"),
1448                   G_TYPE_FROM_CLASS (o_class),
1449                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1450                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1451                   NULL, NULL,
1452                   _gtk_marshal_BOOLEAN__VOID,
1453                   G_TYPE_BOOLEAN, 0);
1454
1455   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1456     g_signal_new (I_("expand-collapse-cursor-row"),
1457                   G_TYPE_FROM_CLASS (o_class),
1458                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1459                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1460                   NULL, NULL,
1461                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1462                   G_TYPE_BOOLEAN, 3,
1463                   G_TYPE_BOOLEAN,
1464                   G_TYPE_BOOLEAN,
1465                   G_TYPE_BOOLEAN);
1466
1467   tree_view_signals[SELECT_CURSOR_PARENT] =
1468     g_signal_new (I_("select-cursor-parent"),
1469                   G_TYPE_FROM_CLASS (o_class),
1470                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1471                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1472                   NULL, NULL,
1473                   _gtk_marshal_BOOLEAN__VOID,
1474                   G_TYPE_BOOLEAN, 0);
1475
1476   tree_view_signals[START_INTERACTIVE_SEARCH] =
1477     g_signal_new (I_("start-interactive-search"),
1478                   G_TYPE_FROM_CLASS (o_class),
1479                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1480                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1481                   NULL, NULL,
1482                   _gtk_marshal_BOOLEAN__VOID,
1483                   G_TYPE_BOOLEAN, 0);
1484
1485   /* Key bindings */
1486   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1487                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1488   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1489                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1490
1491   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1492                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1493   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1494                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1495
1496   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1497                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1498
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1503                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1504   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1505                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1506
1507   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1508                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1509   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1510                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1511
1512   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1513                                   GTK_MOVEMENT_PAGES, -1);
1514   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1515                                   GTK_MOVEMENT_PAGES, -1);
1516
1517   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1518                                   GTK_MOVEMENT_PAGES, 1);
1519   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1520                                   GTK_MOVEMENT_PAGES, 1);
1521
1522
1523   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1524                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1525                                 G_TYPE_INT, 1);
1526
1527   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1528                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1529                                 G_TYPE_INT, -1);
1530
1531   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1532                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1533                                 G_TYPE_INT, 1);
1534
1535   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1536                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1537                                 G_TYPE_INT, -1);
1538
1539   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1540                                 "move-cursor", 2,
1541                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1542                                 G_TYPE_INT, 1);
1543
1544   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1545                                 "move-cursor", 2,
1546                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1547                                 G_TYPE_INT, -1);
1548
1549   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1550                                 "move-cursor", 2,
1551                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1552                                 G_TYPE_INT, 1);
1553
1554   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1555                                 "move-cursor", 2,
1556                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1557                                 G_TYPE_INT, -1);
1558
1559   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1561
1562   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1563   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1569                                 G_TYPE_BOOLEAN, TRUE);
1570   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1571                                 G_TYPE_BOOLEAN, TRUE);
1572
1573   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1574                                 G_TYPE_BOOLEAN, TRUE);
1575   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1576                                 G_TYPE_BOOLEAN, TRUE);
1577   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1578                                 G_TYPE_BOOLEAN, TRUE);
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583
1584   /* expand and collapse rows */
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1586                                 G_TYPE_BOOLEAN, TRUE,
1587                                 G_TYPE_BOOLEAN, TRUE,
1588                                 G_TYPE_BOOLEAN, FALSE);
1589
1590   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1591                                 "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, TRUE);
1595   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1596                                 "expand-collapse-cursor-row", 3,
1597                                 G_TYPE_BOOLEAN, TRUE,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE);
1600
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, FALSE,
1605                                 G_TYPE_BOOLEAN, FALSE);
1606   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1607                                 "expand-collapse-cursor-row", 3,
1608                                 G_TYPE_BOOLEAN, TRUE,
1609                                 G_TYPE_BOOLEAN, FALSE,
1610                                 G_TYPE_BOOLEAN, FALSE);
1611
1612   /* Not doable on US keyboards */
1613   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, TRUE,
1616                                 G_TYPE_BOOLEAN, TRUE);
1617   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1618                                 G_TYPE_BOOLEAN, TRUE,
1619                                 G_TYPE_BOOLEAN, TRUE,
1620                                 G_TYPE_BOOLEAN, FALSE);
1621   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1622                                 G_TYPE_BOOLEAN, TRUE,
1623                                 G_TYPE_BOOLEAN, TRUE,
1624                                 G_TYPE_BOOLEAN, TRUE);
1625   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1626                                 G_TYPE_BOOLEAN, TRUE,
1627                                 G_TYPE_BOOLEAN, TRUE,
1628                                 G_TYPE_BOOLEAN, TRUE);
1629   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1630                                 "expand-collapse-cursor-row", 3,
1631                                 G_TYPE_BOOLEAN, FALSE,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE);
1634   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1635                                 "expand-collapse-cursor-row", 3,
1636                                 G_TYPE_BOOLEAN, FALSE,
1637                                 G_TYPE_BOOLEAN, TRUE,
1638                                 G_TYPE_BOOLEAN, TRUE);
1639   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1640                                 GDK_CONTROL_MASK | 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_KP_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
1652   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1653                                 G_TYPE_BOOLEAN, TRUE,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, FALSE);
1656   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1657                                 G_TYPE_BOOLEAN, TRUE,
1658                                 G_TYPE_BOOLEAN, FALSE,
1659                                 G_TYPE_BOOLEAN, TRUE);
1660   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1661                                 G_TYPE_BOOLEAN, TRUE,
1662                                 G_TYPE_BOOLEAN, FALSE,
1663                                 G_TYPE_BOOLEAN, FALSE);
1664   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1665                                 G_TYPE_BOOLEAN, TRUE,
1666                                 G_TYPE_BOOLEAN, FALSE,
1667                                 G_TYPE_BOOLEAN, TRUE);
1668   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1669                                 "expand-collapse-cursor-row", 3,
1670                                 G_TYPE_BOOLEAN, FALSE,
1671                                 G_TYPE_BOOLEAN, FALSE,
1672                                 G_TYPE_BOOLEAN, TRUE);
1673   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1674                                 "expand-collapse-cursor-row", 3,
1675                                 G_TYPE_BOOLEAN, FALSE,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, TRUE);
1678   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1679                                 GDK_CONTROL_MASK | 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_KP_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
1691   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1692   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1693
1694   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1695
1696   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1697
1698   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1699 }
1700
1701 static void
1702 gtk_tree_view_init (GtkTreeView *tree_view)
1703 {
1704   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1705
1706   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1707   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1708
1709   tree_view->priv->show_expanders = TRUE;
1710   tree_view->priv->draw_keyfocus = TRUE;
1711   tree_view->priv->headers_visible = TRUE;
1712
1713   /* We need some padding */
1714   tree_view->priv->dy = 0;
1715   tree_view->priv->cursor_offset = 0;
1716   tree_view->priv->n_columns = 0;
1717   tree_view->priv->header_height = 1;
1718   tree_view->priv->x_drag = 0;
1719   tree_view->priv->drag_pos = -1;
1720   tree_view->priv->header_has_focus = FALSE;
1721   tree_view->priv->pressed_button = -1;
1722   tree_view->priv->press_start_x = -1;
1723   tree_view->priv->press_start_y = -1;
1724   tree_view->priv->reorderable = FALSE;
1725   tree_view->priv->presize_handler_timer = 0;
1726   tree_view->priv->scroll_sync_timer = 0;
1727   tree_view->priv->fixed_height = -1;
1728   tree_view->priv->fixed_height_mode = FALSE;
1729   tree_view->priv->fixed_height_check = 0;
1730   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1731   tree_view->priv->enable_search = TRUE;
1732   tree_view->priv->search_column = -1;
1733   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1734   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1735   tree_view->priv->search_custom_entry_set = FALSE;
1736   tree_view->priv->typeselect_flush_timeout = 0;
1737   tree_view->priv->init_hadjust_value = TRUE;
1738   tree_view->priv->width = 0;
1739
1740   tree_view->priv->hover_selection = FALSE;
1741   tree_view->priv->hover_expand = FALSE;
1742
1743   tree_view->priv->level_indentation = 0;
1744
1745   tree_view->priv->rubber_banding_enable = FALSE;
1746
1747   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1748   tree_view->priv->tree_lines_enabled = FALSE;
1749
1750   tree_view->priv->tooltip_column = -1;
1751
1752   tree_view->priv->post_validation_flag = FALSE;
1753
1754   tree_view->priv->last_button_x = -1;
1755   tree_view->priv->last_button_y = -1;
1756
1757   tree_view->priv->event_last_x = -10000;
1758   tree_view->priv->event_last_y = -10000;
1759
1760   gtk_tree_view_set_vadjustment (tree_view, NULL);
1761   gtk_tree_view_set_hadjustment (tree_view, NULL);
1762 }
1763
1764 \f
1765
1766 /* GObject Methods
1767  */
1768
1769 static void
1770 gtk_tree_view_set_property (GObject         *object,
1771                             guint            prop_id,
1772                             const GValue    *value,
1773                             GParamSpec      *pspec)
1774 {
1775   GtkTreeView *tree_view;
1776
1777   tree_view = GTK_TREE_VIEW (object);
1778
1779   switch (prop_id)
1780     {
1781     case PROP_MODEL:
1782       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1783       break;
1784     case PROP_HADJUSTMENT:
1785       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1786       break;
1787     case PROP_VADJUSTMENT:
1788       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1789       break;
1790     case PROP_HSCROLL_POLICY:
1791       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1792       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1793       break;
1794     case PROP_VSCROLL_POLICY:
1795       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1796       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1797       break;
1798     case PROP_HEADERS_VISIBLE:
1799       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1800       break;
1801     case PROP_HEADERS_CLICKABLE:
1802       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1803       break;
1804     case PROP_EXPANDER_COLUMN:
1805       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1806       break;
1807     case PROP_REORDERABLE:
1808       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1809       break;
1810     case PROP_RULES_HINT:
1811       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1812       break;
1813     case PROP_ENABLE_SEARCH:
1814       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1815       break;
1816     case PROP_SEARCH_COLUMN:
1817       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1818       break;
1819     case PROP_FIXED_HEIGHT_MODE:
1820       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1821       break;
1822     case PROP_HOVER_SELECTION:
1823       tree_view->priv->hover_selection = g_value_get_boolean (value);
1824       break;
1825     case PROP_HOVER_EXPAND:
1826       tree_view->priv->hover_expand = g_value_get_boolean (value);
1827       break;
1828     case PROP_SHOW_EXPANDERS:
1829       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1830       break;
1831     case PROP_LEVEL_INDENTATION:
1832       tree_view->priv->level_indentation = g_value_get_int (value);
1833       break;
1834     case PROP_RUBBER_BANDING:
1835       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1836       break;
1837     case PROP_ENABLE_GRID_LINES:
1838       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1839       break;
1840     case PROP_ENABLE_TREE_LINES:
1841       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1842       break;
1843     case PROP_TOOLTIP_COLUMN:
1844       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1845       break;
1846     default:
1847       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1848       break;
1849     }
1850 }
1851
1852 static void
1853 gtk_tree_view_get_property (GObject    *object,
1854                             guint       prop_id,
1855                             GValue     *value,
1856                             GParamSpec *pspec)
1857 {
1858   GtkTreeView *tree_view;
1859
1860   tree_view = GTK_TREE_VIEW (object);
1861
1862   switch (prop_id)
1863     {
1864     case PROP_MODEL:
1865       g_value_set_object (value, tree_view->priv->model);
1866       break;
1867     case PROP_HADJUSTMENT:
1868       g_value_set_object (value, tree_view->priv->hadjustment);
1869       break;
1870     case PROP_VADJUSTMENT:
1871       g_value_set_object (value, tree_view->priv->vadjustment);
1872       break;
1873     case PROP_HSCROLL_POLICY:
1874       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1875       break;
1876     case PROP_VSCROLL_POLICY:
1877       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1878       break;
1879     case PROP_HEADERS_VISIBLE:
1880       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1881       break;
1882     case PROP_HEADERS_CLICKABLE:
1883       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1884       break;
1885     case PROP_EXPANDER_COLUMN:
1886       g_value_set_object (value, tree_view->priv->expander_column);
1887       break;
1888     case PROP_REORDERABLE:
1889       g_value_set_boolean (value, tree_view->priv->reorderable);
1890       break;
1891     case PROP_RULES_HINT:
1892       g_value_set_boolean (value, tree_view->priv->has_rules);
1893       break;
1894     case PROP_ENABLE_SEARCH:
1895       g_value_set_boolean (value, tree_view->priv->enable_search);
1896       break;
1897     case PROP_SEARCH_COLUMN:
1898       g_value_set_int (value, tree_view->priv->search_column);
1899       break;
1900     case PROP_FIXED_HEIGHT_MODE:
1901       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1902       break;
1903     case PROP_HOVER_SELECTION:
1904       g_value_set_boolean (value, tree_view->priv->hover_selection);
1905       break;
1906     case PROP_HOVER_EXPAND:
1907       g_value_set_boolean (value, tree_view->priv->hover_expand);
1908       break;
1909     case PROP_SHOW_EXPANDERS:
1910       g_value_set_boolean (value, tree_view->priv->show_expanders);
1911       break;
1912     case PROP_LEVEL_INDENTATION:
1913       g_value_set_int (value, tree_view->priv->level_indentation);
1914       break;
1915     case PROP_RUBBER_BANDING:
1916       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1917       break;
1918     case PROP_ENABLE_GRID_LINES:
1919       g_value_set_enum (value, tree_view->priv->grid_lines);
1920       break;
1921     case PROP_ENABLE_TREE_LINES:
1922       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1923       break;
1924     case PROP_TOOLTIP_COLUMN:
1925       g_value_set_int (value, tree_view->priv->tooltip_column);
1926       break;
1927     default:
1928       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1929       break;
1930     }
1931 }
1932
1933 static void
1934 gtk_tree_view_finalize (GObject *object)
1935 {
1936   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1937 }
1938
1939
1940 static GtkBuildableIface *parent_buildable_iface;
1941
1942 static void
1943 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1944 {
1945   parent_buildable_iface = g_type_interface_peek_parent (iface);
1946   iface->add_child = gtk_tree_view_buildable_add_child;
1947   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1948 }
1949
1950 static void
1951 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1952                                    GtkBuilder  *builder,
1953                                    GObject     *child,
1954                                    const gchar *type)
1955 {
1956   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1957 }
1958
1959 static GObject *
1960 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1961                                             GtkBuilder        *builder,
1962                                             const gchar       *childname)
1963 {
1964     if (strcmp (childname, "selection") == 0)
1965       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1966
1967     return parent_buildable_iface->get_internal_child (buildable,
1968                                                        builder,
1969                                                        childname);
1970 }
1971
1972 /* GtkWidget Methods
1973  */
1974
1975 static void
1976 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1977 {
1978   _gtk_rbtree_free (tree_view->priv->tree);
1979
1980   tree_view->priv->tree = NULL;
1981   tree_view->priv->button_pressed_node = NULL;
1982   tree_view->priv->button_pressed_tree = NULL;
1983   tree_view->priv->prelight_tree = NULL;
1984   tree_view->priv->prelight_node = NULL;
1985   tree_view->priv->expanded_collapsed_node = NULL;
1986   tree_view->priv->expanded_collapsed_tree = NULL;
1987 }
1988
1989 static void
1990 gtk_tree_view_destroy (GtkWidget *widget)
1991 {
1992   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1993   GList *list;
1994
1995   gtk_tree_view_stop_editing (tree_view, TRUE);
1996
1997   if (tree_view->priv->columns != NULL)
1998     {
1999       list = tree_view->priv->columns;
2000       while (list)
2001         {
2002           GtkTreeViewColumn *column;
2003           column = GTK_TREE_VIEW_COLUMN (list->data);
2004           list = list->next;
2005           gtk_tree_view_remove_column (tree_view, column);
2006         }
2007       tree_view->priv->columns = NULL;
2008     }
2009
2010   if (tree_view->priv->tree != NULL)
2011     {
2012       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2013
2014       gtk_tree_view_free_rbtree (tree_view);
2015     }
2016
2017   if (tree_view->priv->selection != NULL)
2018     {
2019       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2020       g_object_unref (tree_view->priv->selection);
2021       tree_view->priv->selection = NULL;
2022     }
2023
2024   if (tree_view->priv->scroll_to_path != NULL)
2025     {
2026       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2027       tree_view->priv->scroll_to_path = NULL;
2028     }
2029
2030   if (tree_view->priv->drag_dest_row != NULL)
2031     {
2032       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2033       tree_view->priv->drag_dest_row = NULL;
2034     }
2035
2036   if (tree_view->priv->top_row != NULL)
2037     {
2038       gtk_tree_row_reference_free (tree_view->priv->top_row);
2039       tree_view->priv->top_row = NULL;
2040     }
2041
2042   if (tree_view->priv->column_drop_func_data &&
2043       tree_view->priv->column_drop_func_data_destroy)
2044     {
2045       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2046       tree_view->priv->column_drop_func_data = NULL;
2047     }
2048
2049   if (tree_view->priv->destroy_count_destroy &&
2050       tree_view->priv->destroy_count_data)
2051     {
2052       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2053       tree_view->priv->destroy_count_data = NULL;
2054     }
2055
2056   gtk_tree_row_reference_free (tree_view->priv->cursor);
2057   tree_view->priv->cursor = NULL;
2058
2059   gtk_tree_row_reference_free (tree_view->priv->anchor);
2060   tree_view->priv->anchor = NULL;
2061
2062   /* destroy interactive search dialog */
2063   if (tree_view->priv->search_window)
2064     {
2065       gtk_widget_destroy (tree_view->priv->search_window);
2066       tree_view->priv->search_window = NULL;
2067       tree_view->priv->search_entry = NULL;
2068       if (tree_view->priv->typeselect_flush_timeout)
2069         {
2070           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2071           tree_view->priv->typeselect_flush_timeout = 0;
2072         }
2073     }
2074
2075   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2076     {
2077       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2078       tree_view->priv->search_user_data = NULL;
2079     }
2080
2081   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2082     {
2083       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2084       tree_view->priv->search_position_user_data = NULL;
2085     }
2086
2087   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2088     {
2089       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2090       tree_view->priv->row_separator_data = NULL;
2091     }
2092
2093   gtk_tree_view_set_model (tree_view, NULL);
2094
2095   if (tree_view->priv->hadjustment)
2096     {
2097       g_object_unref (tree_view->priv->hadjustment);
2098       tree_view->priv->hadjustment = NULL;
2099     }
2100   if (tree_view->priv->vadjustment)
2101     {
2102       g_object_unref (tree_view->priv->vadjustment);
2103       tree_view->priv->vadjustment = NULL;
2104     }
2105
2106   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2107 }
2108
2109 /* GtkWidget::map helper */
2110 static void
2111 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2112 {
2113   GList *list;
2114
2115   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2116
2117   if (tree_view->priv->headers_visible)
2118     {
2119       GtkTreeViewColumn *column;
2120       GtkWidget         *button;
2121       GdkWindow         *window;
2122
2123       for (list = tree_view->priv->columns; list; list = list->next)
2124         {
2125           column = list->data;
2126           button = gtk_tree_view_column_get_button (column);
2127
2128           if (gtk_tree_view_column_get_visible (column) && button)
2129             gtk_widget_show_now (button);
2130
2131           if (gtk_widget_get_visible (button) &&
2132               !gtk_widget_get_mapped (button))
2133             gtk_widget_map (button);
2134         }
2135       for (list = tree_view->priv->columns; list; list = list->next)
2136         {
2137           column = list->data;
2138           if (gtk_tree_view_column_get_visible (column) == FALSE)
2139             continue;
2140
2141           window = _gtk_tree_view_column_get_window (column);
2142           if (gtk_tree_view_column_get_resizable (column))
2143             {
2144               gdk_window_raise (window);
2145               gdk_window_show (window);
2146             }
2147           else
2148             gdk_window_hide (window);
2149         }
2150       gdk_window_show (tree_view->priv->header_window);
2151     }
2152 }
2153
2154 static void
2155 gtk_tree_view_map (GtkWidget *widget)
2156 {
2157   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2158   GList *tmp_list;
2159
2160   gtk_widget_set_mapped (widget, TRUE);
2161
2162   tmp_list = tree_view->priv->children;
2163   while (tmp_list)
2164     {
2165       GtkTreeViewChild *child = tmp_list->data;
2166       tmp_list = tmp_list->next;
2167
2168       if (gtk_widget_get_visible (child->widget))
2169         {
2170           if (!gtk_widget_get_mapped (child->widget))
2171             gtk_widget_map (child->widget);
2172         }
2173     }
2174   gdk_window_show (tree_view->priv->bin_window);
2175
2176   gtk_tree_view_map_buttons (tree_view);
2177
2178   gdk_window_show (gtk_widget_get_window (widget));
2179 }
2180
2181 static void
2182 gtk_tree_view_realize (GtkWidget *widget)
2183 {
2184   GtkAllocation allocation;
2185   GtkStyleContext *context;
2186   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2187   GdkWindow *window;
2188   GdkWindowAttr attributes;
2189   GList *tmp_list;
2190   gint attributes_mask;
2191
2192   gtk_widget_set_realized (widget, TRUE);
2193
2194   gtk_widget_get_allocation (widget, &allocation);
2195
2196   /* Make the main, clipping window */
2197   attributes.window_type = GDK_WINDOW_CHILD;
2198   attributes.x = allocation.x;
2199   attributes.y = allocation.y;
2200   attributes.width = allocation.width;
2201   attributes.height = allocation.height;
2202   attributes.wclass = GDK_INPUT_OUTPUT;
2203   attributes.visual = gtk_widget_get_visual (widget);
2204   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2205
2206   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2207
2208   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2209                            &attributes, attributes_mask);
2210   gtk_widget_set_window (widget, window);
2211   gdk_window_set_user_data (window, widget);
2212
2213   gtk_widget_get_allocation (widget, &allocation);
2214
2215   /* Make the window for the tree */
2216   attributes.x = 0;
2217   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2218   attributes.width = MAX (tree_view->priv->width, allocation.width);
2219   attributes.height = allocation.height;
2220   attributes.event_mask = (GDK_EXPOSURE_MASK |
2221                            GDK_SCROLL_MASK |
2222                            GDK_POINTER_MOTION_MASK |
2223                            GDK_ENTER_NOTIFY_MASK |
2224                            GDK_LEAVE_NOTIFY_MASK |
2225                            GDK_BUTTON_PRESS_MASK |
2226                            GDK_BUTTON_RELEASE_MASK |
2227                            gtk_widget_get_events (widget));
2228
2229   tree_view->priv->bin_window = gdk_window_new (window,
2230                                                 &attributes, attributes_mask);
2231   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2232
2233   gtk_widget_get_allocation (widget, &allocation);
2234
2235   /* Make the column header window */
2236   attributes.x = 0;
2237   attributes.y = 0;
2238   attributes.width = MAX (tree_view->priv->width, allocation.width);
2239   attributes.height = tree_view->priv->header_height;
2240   attributes.event_mask = (GDK_EXPOSURE_MASK |
2241                            GDK_SCROLL_MASK |
2242                            GDK_ENTER_NOTIFY_MASK |
2243                            GDK_LEAVE_NOTIFY_MASK |
2244                            GDK_BUTTON_PRESS_MASK |
2245                            GDK_BUTTON_RELEASE_MASK |
2246                            GDK_KEY_PRESS_MASK |
2247                            GDK_KEY_RELEASE_MASK |
2248                            gtk_widget_get_events (widget));
2249
2250   tree_view->priv->header_window = gdk_window_new (window,
2251                                                    &attributes, attributes_mask);
2252   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2253
2254   context = gtk_widget_get_style_context (widget);
2255
2256   gtk_style_context_save (context);
2257   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2258   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2259   gtk_style_context_restore (context);
2260
2261   gtk_style_context_set_background (context, tree_view->priv->header_window);
2262
2263   tmp_list = tree_view->priv->children;
2264   while (tmp_list)
2265     {
2266       GtkTreeViewChild *child = tmp_list->data;
2267       tmp_list = tmp_list->next;
2268
2269       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2270     }
2271
2272   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2273     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2274
2275   /* Need to call those here, since they create GCs */
2276   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2277   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2278
2279   install_presize_handler (tree_view);
2280 }
2281
2282 static void
2283 gtk_tree_view_unrealize (GtkWidget *widget)
2284 {
2285   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2286   GtkTreeViewPrivate *priv = tree_view->priv;
2287   GtkStyleContext *context;
2288   GList *list;
2289
2290   if (priv->scroll_timeout != 0)
2291     {
2292       g_source_remove (priv->scroll_timeout);
2293       priv->scroll_timeout = 0;
2294     }
2295
2296   if (priv->auto_expand_timeout != 0)
2297     {
2298       g_source_remove (priv->auto_expand_timeout);
2299       priv->auto_expand_timeout = 0;
2300     }
2301
2302   if (priv->open_dest_timeout != 0)
2303     {
2304       g_source_remove (priv->open_dest_timeout);
2305       priv->open_dest_timeout = 0;
2306     }
2307
2308   context = gtk_widget_get_style_context (widget);
2309   gtk_style_context_cancel_animations (context, NULL);
2310
2311   if (priv->presize_handler_timer != 0)
2312     {
2313       g_source_remove (priv->presize_handler_timer);
2314       priv->presize_handler_timer = 0;
2315     }
2316
2317   if (priv->validate_rows_timer != 0)
2318     {
2319       g_source_remove (priv->validate_rows_timer);
2320       priv->validate_rows_timer = 0;
2321     }
2322
2323   if (priv->scroll_sync_timer != 0)
2324     {
2325       g_source_remove (priv->scroll_sync_timer);
2326       priv->scroll_sync_timer = 0;
2327     }
2328
2329   if (priv->typeselect_flush_timeout)
2330     {
2331       g_source_remove (priv->typeselect_flush_timeout);
2332       priv->typeselect_flush_timeout = 0;
2333     }
2334
2335   for (list = priv->columns; list; list = list->next)
2336     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2337
2338   gdk_window_set_user_data (priv->bin_window, NULL);
2339   gdk_window_destroy (priv->bin_window);
2340   priv->bin_window = NULL;
2341
2342   gdk_window_set_user_data (priv->header_window, NULL);
2343   gdk_window_destroy (priv->header_window);
2344   priv->header_window = NULL;
2345
2346   if (priv->drag_window)
2347     {
2348       gdk_window_set_user_data (priv->drag_window, NULL);
2349       gdk_window_destroy (priv->drag_window);
2350       priv->drag_window = NULL;
2351     }
2352
2353   if (priv->drag_highlight_window)
2354     {
2355       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2356       gdk_window_destroy (priv->drag_highlight_window);
2357       priv->drag_highlight_window = NULL;
2358     }
2359
2360   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2361 }
2362
2363 /* GtkWidget::size_request helper */
2364 static void
2365 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2366 {
2367   GList *list;
2368
2369   tree_view->priv->header_height = 0;
2370
2371   if (tree_view->priv->model)
2372     {
2373       for (list = tree_view->priv->columns; list; list = list->next)
2374         {
2375           GtkRequisition     requisition;
2376           GtkTreeViewColumn *column = list->data;
2377           GtkWidget         *button = gtk_tree_view_column_get_button (column);
2378
2379           if (button == NULL)
2380             continue;
2381
2382           column = list->data;
2383
2384           gtk_widget_get_preferred_size (button, &requisition, NULL);
2385           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2386         }
2387     }
2388 }
2389
2390
2391 /* Called only by ::size_request */
2392 static void
2393 gtk_tree_view_update_size (GtkTreeView *tree_view)
2394 {
2395   GList *list;
2396   GtkTreeViewColumn *column;
2397   gint i;
2398
2399   if (tree_view->priv->model == NULL)
2400     {
2401       tree_view->priv->width = 0;
2402       tree_view->priv->prev_width = 0;
2403       tree_view->priv->height = 0;
2404       return;
2405     }
2406
2407   tree_view->priv->prev_width = tree_view->priv->width;
2408   tree_view->priv->width = 0;
2409
2410   /* keep this in sync with size_allocate below */
2411   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2412     {
2413       column = list->data;
2414       if (!gtk_tree_view_column_get_visible (column))
2415         continue;
2416
2417       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2418     }
2419
2420   if (tree_view->priv->tree == NULL)
2421     tree_view->priv->height = 0;
2422   else
2423     tree_view->priv->height = tree_view->priv->tree->root->offset;
2424 }
2425
2426 static void
2427 gtk_tree_view_size_request (GtkWidget      *widget,
2428                             GtkRequisition *requisition,
2429                             gboolean        may_validate)
2430 {
2431   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2432
2433   if (may_validate)
2434     {
2435       /* we validate some rows initially just to make sure we have some size.
2436        * In practice, with a lot of static lists, this should get a good width.
2437        */
2438       do_validate_rows (tree_view, FALSE);
2439     }
2440
2441   gtk_tree_view_size_request_columns (tree_view);
2442   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2443
2444   requisition->width = tree_view->priv->width;
2445   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2446 }
2447
2448 static void
2449 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2450                                    gint      *minimum,
2451                                    gint      *natural)
2452 {
2453   GtkRequisition requisition;
2454
2455   gtk_tree_view_size_request (widget, &requisition, TRUE);
2456
2457   *minimum = *natural = requisition.width;
2458 }
2459
2460 static void
2461 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2462                                     gint      *minimum,
2463                                     gint      *natural)
2464 {
2465   GtkRequisition requisition;
2466
2467   gtk_tree_view_size_request (widget, &requisition, TRUE);
2468
2469   *minimum = *natural = requisition.height;
2470 }
2471
2472 static int
2473 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2474 {
2475   int width = 0;
2476   GList *list;
2477   gboolean rtl;
2478
2479   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2480   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2481        list->data != tree_view->priv->expander_column;
2482        list = (rtl ? list->prev : list->next))
2483     {
2484       GtkTreeViewColumn *column = list->data;
2485
2486       width += gtk_tree_view_column_get_width (column);
2487     }
2488
2489   return width;
2490 }
2491
2492 /* GtkWidget::size_allocate helper */
2493 static void
2494 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2495                                      gboolean  *width_changed)
2496 {
2497   GtkTreeView *tree_view;
2498   GList *list, *first_column, *last_column;
2499   GtkTreeViewColumn *column;
2500   GtkAllocation widget_allocation;
2501   gint width = 0;
2502   gint extra, extra_per_column, extra_for_last;
2503   gint full_requested_width = 0;
2504   gint number_of_expand_columns = 0;
2505   gboolean rtl;
2506   gboolean update_expand;
2507
2508   tree_view = GTK_TREE_VIEW (widget);
2509
2510   for (last_column = g_list_last (tree_view->priv->columns);
2511        last_column &&
2512        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2513        last_column = last_column->prev)
2514     ;
2515   if (last_column == NULL)
2516     return;
2517
2518   for (first_column = g_list_first (tree_view->priv->columns);
2519        first_column &&
2520        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2521        first_column = first_column->next)
2522     ;
2523
2524   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2525
2526   /* find out how many extra space and expandable columns we have */
2527   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2528     {
2529       column = (GtkTreeViewColumn *)list->data;
2530
2531       if (!gtk_tree_view_column_get_visible (column))
2532         continue;
2533
2534       full_requested_width += _gtk_tree_view_column_request_width (column);
2535
2536       if (gtk_tree_view_column_get_expand (column))
2537         number_of_expand_columns++;
2538     }
2539
2540   /* Only update the expand value if the width of the widget has changed,
2541    * or the number of expand columns has changed, or if there are no expand
2542    * columns, or if we didn't have an size-allocation yet after the
2543    * last validated node.
2544    */
2545   update_expand = (width_changed && *width_changed == TRUE)
2546       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2547       || number_of_expand_columns == 0
2548       || tree_view->priv->post_validation_flag == TRUE;
2549
2550   tree_view->priv->post_validation_flag = FALSE;
2551
2552   gtk_widget_get_allocation (widget, &widget_allocation);
2553   if (!update_expand)
2554     {
2555       extra = tree_view->priv->last_extra_space;
2556       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2557     }
2558   else
2559     {
2560       extra = MAX (widget_allocation.width - full_requested_width, 0);
2561       extra_for_last = 0;
2562
2563       tree_view->priv->last_extra_space = extra;
2564     }
2565
2566   if (number_of_expand_columns > 0)
2567     extra_per_column = extra/number_of_expand_columns;
2568   else
2569     extra_per_column = 0;
2570
2571   if (update_expand)
2572     {
2573       tree_view->priv->last_extra_space_per_column = extra_per_column;
2574       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2575     }
2576
2577   for (list = (rtl ? last_column : first_column);
2578        list != (rtl ? first_column->prev : last_column->next);
2579        list = (rtl ? list->prev : list->next))
2580     {
2581       gint old_width, column_width;
2582
2583       column = list->data;
2584       old_width = gtk_tree_view_column_get_width (column);
2585
2586       if (!gtk_tree_view_column_get_visible (column))
2587         continue;
2588
2589       /* We need to handle the dragged button specially.
2590        */
2591       if (column == tree_view->priv->drag_column)
2592         {
2593           GtkAllocation drag_allocation;
2594           GtkWidget    *button;
2595
2596           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2597
2598           drag_allocation.x = 0;
2599           drag_allocation.y = 0;
2600           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2601           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2602           gtk_widget_size_allocate (button, &drag_allocation);
2603           width += drag_allocation.width;
2604           continue;
2605         }
2606
2607       column_width = _gtk_tree_view_column_request_width (column);
2608
2609       if (gtk_tree_view_column_get_expand (column))
2610         {
2611           if (number_of_expand_columns == 1)
2612             {
2613               /* We add the remander to the last column as
2614                * */
2615               column_width += extra;
2616             }
2617           else
2618             {
2619               column_width += extra_per_column;
2620               extra -= extra_per_column;
2621               number_of_expand_columns --;
2622             }
2623         }
2624       else if (number_of_expand_columns == 0 &&
2625                list == last_column)
2626         {
2627           column_width += extra;
2628         }
2629
2630       /* In addition to expand, the last column can get even more
2631        * extra space so all available space is filled up.
2632        */
2633       if (extra_for_last > 0 && list == last_column)
2634         column_width += extra_for_last;
2635
2636       _gtk_tree_view_column_allocate (column, width, column_width);
2637
2638       width += column_width;
2639     }
2640
2641   /* We change the width here.  The user might have been resizing columns,
2642    * which changes the total width of the tree view.  This is of
2643    * importance for getting the horizontal scroll bar right.
2644    */
2645   if (tree_view->priv->width != width)
2646     {
2647       tree_view->priv->width = width;
2648       if (width_changed)
2649         *width_changed = TRUE;
2650     }
2651 }
2652
2653
2654 static void
2655 gtk_tree_view_size_allocate (GtkWidget     *widget,
2656                              GtkAllocation *allocation)
2657 {
2658   GtkAllocation widget_allocation;
2659   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2660   GList *tmp_list;
2661   gboolean width_changed = FALSE;
2662   gint old_width;
2663
2664   gtk_widget_get_allocation (widget, &widget_allocation);
2665   old_width = widget_allocation.width;
2666   if (allocation->width != widget_allocation.width)
2667     width_changed = TRUE;
2668
2669   gtk_widget_set_allocation (widget, allocation);
2670
2671   tmp_list = tree_view->priv->children;
2672
2673   while (tmp_list)
2674     {
2675       GtkAllocation allocation;
2676
2677       GtkTreeViewChild *child = tmp_list->data;
2678       tmp_list = tmp_list->next;
2679
2680       /* totally ignore our child's requisition */
2681       allocation.x = child->x;
2682       allocation.y = child->y;
2683       allocation.width = child->width;
2684       allocation.height = child->height;
2685       gtk_widget_size_allocate (child->widget, &allocation);
2686     }
2687
2688   /* We size-allocate the columns first because the width of the
2689    * tree view (used in updating the adjustments below) might change.
2690    */
2691   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2692
2693   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2694   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2695                                 allocation->width);
2696   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2697                                      allocation->width * 0.9);
2698   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2699                                      allocation->width * 0.1);
2700   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2701   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2702                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2703                                  tree_view->priv->width));
2704   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2705
2706   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2707     {
2708       if (allocation->width < tree_view->priv->width)
2709         {
2710           if (tree_view->priv->init_hadjust_value)
2711             {
2712               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2713                                         MAX (tree_view->priv->width -
2714                                              allocation->width, 0));
2715               tree_view->priv->init_hadjust_value = FALSE;
2716             }
2717           else if (allocation->width != old_width)
2718             {
2719               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2720                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2721                                                0,
2722                                                tree_view->priv->width - allocation->width));
2723             }
2724           else
2725             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2726                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2727                                              0,
2728                                              tree_view->priv->width - allocation->width));
2729         }
2730       else
2731         {
2732           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2733           tree_view->priv->init_hadjust_value = TRUE;
2734         }
2735     }
2736   else
2737     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2738       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2739                                 MAX (tree_view->priv->width -
2740                                      allocation->width, 0));
2741
2742   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2743   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2744                                 allocation->height -
2745                                 gtk_tree_view_get_effective_header_height (tree_view));
2746   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2747                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2748   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2749                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2750   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2751   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2752                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2753                                  tree_view->priv->height));
2754   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2755
2756   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2757   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2758     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2759   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2760     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2761                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2762   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2763     gtk_tree_view_top_row_to_dy (tree_view);
2764   else
2765     gtk_tree_view_dy_to_top_row (tree_view);
2766
2767   if (gtk_widget_get_realized (widget))
2768     {
2769       gboolean has_expand_column = FALSE;
2770
2771       gdk_window_move_resize (gtk_widget_get_window (widget),
2772                               allocation->x, allocation->y,
2773                               allocation->width, allocation->height);
2774       gdk_window_move_resize (tree_view->priv->header_window,
2775                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2776                               0,
2777                               MAX (tree_view->priv->width, allocation->width),
2778                               tree_view->priv->header_height);
2779       gdk_window_move_resize (tree_view->priv->bin_window,
2780                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2781                               gtk_tree_view_get_effective_header_height (tree_view),
2782                               MAX (tree_view->priv->width, allocation->width),
2783                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2784
2785       if (tree_view->priv->tree == NULL)
2786         invalidate_empty_focus (tree_view);
2787
2788       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2789         {
2790           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2791             {
2792               has_expand_column = TRUE;
2793               break;
2794             }
2795         }
2796
2797       if (width_changed && tree_view->priv->expander_column)
2798         {
2799           /* Might seem awkward, but is the best heuristic I could come up
2800            * with.  Only if the width of the columns before the expander
2801            * changes, we will update the prelight status.  It is this
2802            * width that makes the expander move vertically.  Always updating
2803            * prelight status causes trouble with hover selections.
2804            */
2805           gint width_before_expander;
2806
2807           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2808
2809           if (tree_view->priv->prev_width_before_expander
2810               != width_before_expander)
2811               update_prelight (tree_view,
2812                                tree_view->priv->event_last_x,
2813                                tree_view->priv->event_last_y);
2814
2815           tree_view->priv->prev_width_before_expander = width_before_expander;
2816         }
2817     }
2818 }
2819
2820 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2821 static void
2822 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2823 {
2824   GtkWidget *widget = GTK_WIDGET (tree_view);
2825
2826   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2827     gtk_widget_grab_focus (widget);
2828   tree_view->priv->draw_keyfocus = 0;
2829 }
2830
2831 static inline gboolean
2832 row_is_separator (GtkTreeView *tree_view,
2833                   GtkTreeIter *iter,
2834                   GtkTreePath *path)
2835 {
2836   gboolean is_separator = FALSE;
2837
2838   if (tree_view->priv->row_separator_func)
2839     {
2840       GtkTreeIter tmpiter;
2841
2842       if (iter)
2843         tmpiter = *iter;
2844       else
2845         {
2846           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2847             return FALSE;
2848         }
2849
2850       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2851                                                           &tmpiter,
2852                                                           tree_view->priv->row_separator_data);
2853     }
2854
2855   return is_separator;
2856 }
2857
2858 static gboolean
2859 gtk_tree_view_button_press (GtkWidget      *widget,
2860                             GdkEventButton *event)
2861 {
2862   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2863   GList *list;
2864   GtkTreeViewColumn *column = NULL;
2865   gint i;
2866   GdkRectangle background_area;
2867   GdkRectangle cell_area;
2868   gint vertical_separator;
2869   gint horizontal_separator;
2870   gboolean path_is_selectable;
2871   gboolean rtl;
2872
2873   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2874   gtk_tree_view_stop_editing (tree_view, FALSE);
2875   gtk_widget_style_get (widget,
2876                         "vertical-separator", &vertical_separator,
2877                         "horizontal-separator", &horizontal_separator,
2878                         NULL);
2879
2880   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2881    * we're done handling the button press.
2882    */
2883
2884   if (event->window == tree_view->priv->bin_window)
2885     {
2886       GtkRBNode *node;
2887       GtkRBTree *tree;
2888       GtkTreePath *path;
2889       gint depth;
2890       gint new_y;
2891       gint y_offset;
2892       gint dval;
2893       gint pre_val, aft_val;
2894       GtkTreeViewColumn *column = NULL;
2895       gint column_handled_click = FALSE;
2896       gboolean row_double_click = FALSE;
2897       gboolean rtl;
2898       gboolean node_selected;
2899
2900       /* Empty tree? */
2901       if (tree_view->priv->tree == NULL)
2902         {
2903           grab_focus_and_unset_draw_keyfocus (tree_view);
2904           return TRUE;
2905         }
2906
2907       /* are we in an arrow? */
2908       if (tree_view->priv->prelight_node &&
2909           tree_view->priv->arrow_prelit &&
2910           gtk_tree_view_draw_expanders (tree_view))
2911         {
2912           if (event->button == 1)
2913             {
2914               gtk_grab_add (widget);
2915               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2916               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2917               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2918                                               tree_view->priv->prelight_tree,
2919                                               tree_view->priv->prelight_node);
2920             }
2921
2922           grab_focus_and_unset_draw_keyfocus (tree_view);
2923           return TRUE;
2924         }
2925
2926       /* find the node that was clicked */
2927       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2928       if (new_y < 0)
2929         new_y = 0;
2930       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2931
2932       if (node == NULL)
2933         {
2934           /* We clicked in dead space */
2935           grab_focus_and_unset_draw_keyfocus (tree_view);
2936           return TRUE;
2937         }
2938
2939       /* Get the path and the node */
2940       path = _gtk_tree_view_find_path (tree_view, tree, node);
2941       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2942
2943       if (!path_is_selectable)
2944         {
2945           gtk_tree_path_free (path);
2946           grab_focus_and_unset_draw_keyfocus (tree_view);
2947           return TRUE;
2948         }
2949
2950       depth = gtk_tree_path_get_depth (path);
2951       background_area.y = y_offset + event->y;
2952       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2953       background_area.x = 0;
2954
2955
2956       /* Let the column have a chance at selecting it. */
2957       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2958       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2959            list; list = (rtl ? list->prev : list->next))
2960         {
2961           GtkTreeViewColumn *candidate = list->data;
2962
2963           if (!gtk_tree_view_column_get_visible (candidate))
2964             continue;
2965
2966           background_area.width = gtk_tree_view_column_get_width (candidate);
2967           if ((background_area.x > (gint) event->x) ||
2968               (background_area.x + background_area.width <= (gint) event->x))
2969             {
2970               background_area.x += background_area.width;
2971               continue;
2972             }
2973
2974           /* we found the focus column */
2975           column = candidate;
2976           cell_area = background_area;
2977           cell_area.width -= horizontal_separator;
2978           cell_area.height -= vertical_separator;
2979           cell_area.x += horizontal_separator/2;
2980           cell_area.y += vertical_separator/2;
2981           if (gtk_tree_view_is_expander_column (tree_view, column))
2982             {
2983               if (!rtl)
2984                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2985               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2986
2987               if (gtk_tree_view_draw_expanders (tree_view))
2988                 {
2989                   if (!rtl)
2990                     cell_area.x += depth * tree_view->priv->expander_size;
2991                   cell_area.width -= depth * tree_view->priv->expander_size;
2992                 }
2993             }
2994           break;
2995         }
2996
2997       if (column == NULL)
2998         {
2999           gtk_tree_path_free (path);
3000           grab_focus_and_unset_draw_keyfocus (tree_view);
3001           return FALSE;
3002         }
3003
3004       tree_view->priv->focus_column = column;
3005
3006       /* decide if we edit */
3007       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3008           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3009         {
3010           GtkTreePath *anchor;
3011           GtkTreeIter iter;
3012
3013           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3014           gtk_tree_view_column_cell_set_cell_data (column,
3015                                                    tree_view->priv->model,
3016                                                    &iter,
3017                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3018                                                    node->children?TRUE:FALSE);
3019
3020           if (tree_view->priv->anchor)
3021             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3022           else
3023             anchor = NULL;
3024
3025           if ((anchor && !gtk_tree_path_compare (anchor, path))
3026               || !_gtk_tree_view_column_has_editable_cell (column))
3027             {
3028               GtkCellEditable *cell_editable = NULL;
3029
3030               /* FIXME: get the right flags */
3031               guint flags = 0;
3032
3033               if (_gtk_tree_view_column_cell_event (column,
3034                                                     (GdkEvent *)event,
3035                                                     &cell_area, flags))
3036                 {
3037                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3038                   cell_editable = gtk_cell_area_get_edit_widget (area);
3039
3040                   if (cell_editable != NULL)
3041                     {
3042                       gtk_tree_path_free (path);
3043                       gtk_tree_path_free (anchor);
3044                       return TRUE;
3045                     }
3046                   column_handled_click = TRUE;
3047                 }
3048             }
3049           if (anchor)
3050             gtk_tree_path_free (anchor);
3051         }
3052
3053       /* select */
3054       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3055       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3056
3057       /* we only handle selection modifications on the first button press
3058        */
3059       if (event->type == GDK_BUTTON_PRESS)
3060         {
3061           GtkCellRenderer *focus_cell;
3062
3063           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3064             tree_view->priv->ctrl_pressed = TRUE;
3065           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
3066             tree_view->priv->shift_pressed = TRUE;
3067
3068           /* We update the focus cell here, this is also needed if the
3069            * column does not contain an editable cell.  In this case,
3070            * GtkCellArea did not receive the event for processing (and
3071            * could not update the focus cell).
3072            */
3073           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3074                                                               &cell_area,
3075                                                               &background_area,
3076                                                               event->x,
3077                                                               event->y);
3078
3079           if (focus_cell)
3080             gtk_tree_view_column_focus_cell (column, focus_cell);
3081
3082           if (event->state & GDK_CONTROL_MASK)
3083             {
3084               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3085               gtk_tree_view_real_toggle_cursor_row (tree_view);
3086             }
3087           else if (event->state & GDK_SHIFT_MASK)
3088             {
3089               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3090               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3091             }
3092           else
3093             {
3094               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
3095             }
3096
3097           tree_view->priv->ctrl_pressed = FALSE;
3098           tree_view->priv->shift_pressed = FALSE;
3099         }
3100
3101       /* the treeview may have been scrolled because of _set_cursor,
3102        * correct here
3103        */
3104
3105       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3106       dval = pre_val - aft_val;
3107
3108       cell_area.y += dval;
3109       background_area.y += dval;
3110
3111       /* Save press to possibly begin a drag
3112        */
3113       if (!column_handled_click &&
3114           !tree_view->priv->in_grab &&
3115           tree_view->priv->pressed_button < 0)
3116         {
3117           tree_view->priv->pressed_button = event->button;
3118           tree_view->priv->press_start_x = event->x;
3119           tree_view->priv->press_start_y = event->y;
3120
3121           if (tree_view->priv->rubber_banding_enable
3122               && !node_selected
3123               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3124             {
3125               tree_view->priv->press_start_y += tree_view->priv->dy;
3126               tree_view->priv->rubber_band_x = event->x;
3127               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3128               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3129
3130               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3131                 tree_view->priv->rubber_band_ctrl = TRUE;
3132               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
3133                 tree_view->priv->rubber_band_shift = TRUE;
3134             }
3135         }
3136
3137       /* Test if a double click happened on the same row. */
3138       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3139         {
3140           int double_click_time, double_click_distance;
3141
3142           g_object_get (gtk_settings_get_default (),
3143                         "gtk-double-click-time", &double_click_time,
3144                         "gtk-double-click-distance", &double_click_distance,
3145                         NULL);
3146
3147           /* Same conditions as _gdk_event_button_generate */
3148           if (tree_view->priv->last_button_x != -1 &&
3149               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3150               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3151               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3152             {
3153               /* We do no longer compare paths of this row and the
3154                * row clicked previously.  We use the double click
3155                * distance to decide whether this is a valid click,
3156                * allowing the mouse to slightly move over another row.
3157                */
3158               row_double_click = TRUE;
3159
3160               tree_view->priv->last_button_time = 0;
3161               tree_view->priv->last_button_x = -1;
3162               tree_view->priv->last_button_y = -1;
3163             }
3164           else
3165             {
3166               tree_view->priv->last_button_time = event->time;
3167               tree_view->priv->last_button_x = event->x;
3168               tree_view->priv->last_button_y = event->y;
3169             }
3170         }
3171
3172       if (row_double_click)
3173         {
3174           gtk_grab_remove (widget);
3175           gtk_tree_view_row_activated (tree_view, path, column);
3176
3177           if (tree_view->priv->pressed_button == event->button)
3178             tree_view->priv->pressed_button = -1;
3179         }
3180
3181       gtk_tree_path_free (path);
3182
3183       /* If we activated the row through a double click we don't want to grab
3184        * focus back, as moving focus to another widget is pretty common.
3185        */
3186       if (!row_double_click)
3187         grab_focus_and_unset_draw_keyfocus (tree_view);
3188
3189       return TRUE;
3190     }
3191
3192   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3193    */
3194   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3195     {
3196       column = list->data;
3197       if (event->window == _gtk_tree_view_column_get_window (column) &&
3198           gtk_tree_view_column_get_resizable (column) &&
3199           _gtk_tree_view_column_get_window (column))
3200         {
3201           GtkWidget *button;
3202           GtkAllocation button_allocation;
3203           gpointer drag_data;
3204
3205           if (event->type == GDK_2BUTTON_PRESS &&
3206               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3207             {
3208               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3209               _gtk_tree_view_column_autosize (tree_view, column);
3210               return TRUE;
3211             }
3212
3213           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3214                                _gtk_tree_view_column_get_window (column),
3215                                GDK_OWNERSHIP_NONE,
3216                                FALSE,
3217                                GDK_POINTER_MOTION_HINT_MASK
3218                                 | GDK_BUTTON1_MOTION_MASK
3219                                 | GDK_BUTTON_RELEASE_MASK,
3220                                NULL,
3221                                event->time) != GDK_GRAB_SUCCESS)
3222             return FALSE;
3223
3224           gtk_grab_add (widget);
3225           tree_view->priv->in_column_resize = TRUE;
3226
3227           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3228                                                    tree_view->priv->last_extra_space_per_column);
3229
3230           /* block attached dnd signal handler */
3231           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3232           if (drag_data)
3233             g_signal_handlers_block_matched (widget,
3234                                              G_SIGNAL_MATCH_DATA,
3235                                              0, 0, NULL, NULL,
3236                                              drag_data);
3237
3238           button = gtk_tree_view_column_get_button (column);
3239           gtk_widget_get_allocation (button, &button_allocation);
3240           tree_view->priv->drag_pos = i;
3241           tree_view->priv->x_drag = button_allocation.x + (rtl ? 0 : button_allocation.width);
3242
3243           if (!gtk_widget_has_focus (widget))
3244             gtk_widget_grab_focus (widget);
3245
3246           return TRUE;
3247         }
3248     }
3249   return FALSE;
3250 }
3251
3252 /* GtkWidget::button_release_event helper */
3253 static gboolean
3254 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3255                                           GdkEventButton *event)
3256 {
3257   GtkTreeView *tree_view;
3258   GtkWidget *button;
3259   GList *l;
3260   gboolean rtl;
3261   GdkDevice *device, *other;
3262
3263   tree_view = GTK_TREE_VIEW (widget);
3264
3265   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3266   device = gdk_event_get_device ((GdkEvent*)event);
3267   other = gdk_device_get_associated_device (device);
3268   gdk_device_ungrab (device, event->time);
3269   gdk_device_ungrab (other, event->time);
3270
3271   /* Move the button back */
3272   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3273   g_object_ref (button);
3274   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3275   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3276   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3277   g_object_unref (button);
3278   gtk_widget_queue_resize (widget);
3279   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3280     {
3281       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3283     }
3284   else
3285     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3286
3287   gtk_widget_grab_focus (button);
3288
3289   if (rtl)
3290     {
3291       if (tree_view->priv->cur_reorder &&
3292           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3293         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3294                                          tree_view->priv->cur_reorder->right_column);
3295     }
3296   else
3297     {
3298       if (tree_view->priv->cur_reorder &&
3299           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3300         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3301                                          tree_view->priv->cur_reorder->left_column);
3302     }
3303   tree_view->priv->drag_column = NULL;
3304   gdk_window_hide (tree_view->priv->drag_window);
3305
3306   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3307     g_slice_free (GtkTreeViewColumnReorder, l->data);
3308   g_list_free (tree_view->priv->column_drag_info);
3309   tree_view->priv->column_drag_info = NULL;
3310   tree_view->priv->cur_reorder = NULL;
3311
3312   if (tree_view->priv->drag_highlight_window)
3313     gdk_window_hide (tree_view->priv->drag_highlight_window);
3314
3315   /* Reset our flags */
3316   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3317   tree_view->priv->in_column_drag = FALSE;
3318
3319   return TRUE;
3320 }
3321
3322 /* GtkWidget::button_release_event helper */
3323 static gboolean
3324 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3325                                             GdkEventButton *event)
3326 {
3327   GtkTreeView *tree_view;
3328   gpointer drag_data;
3329
3330   tree_view = GTK_TREE_VIEW (widget);
3331
3332   tree_view->priv->drag_pos = -1;
3333
3334   /* unblock attached dnd signal handler */
3335   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3336   if (drag_data)
3337     g_signal_handlers_unblock_matched (widget,
3338                                        G_SIGNAL_MATCH_DATA,
3339                                        0, 0, NULL, NULL,
3340                                        drag_data);
3341
3342   tree_view->priv->in_column_resize = FALSE;
3343   gtk_grab_remove (widget);
3344   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3345   return TRUE;
3346 }
3347
3348 static gboolean
3349 gtk_tree_view_button_release (GtkWidget      *widget,
3350                               GdkEventButton *event)
3351 {
3352   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3353
3354   if (tree_view->priv->in_column_drag)
3355     return gtk_tree_view_button_release_drag_column (widget, event);
3356
3357   if (tree_view->priv->rubber_band_status)
3358     gtk_tree_view_stop_rubber_band (tree_view);
3359
3360   if (tree_view->priv->pressed_button == event->button)
3361     tree_view->priv->pressed_button = -1;
3362
3363   if (tree_view->priv->in_column_resize)
3364     return gtk_tree_view_button_release_column_resize (widget, event);
3365
3366   if (tree_view->priv->button_pressed_node == NULL)
3367     return FALSE;
3368
3369   if (event->button == 1)
3370     {
3371       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3372           tree_view->priv->arrow_prelit)
3373         {
3374           GtkTreePath *path = NULL;
3375
3376           path = _gtk_tree_view_find_path (tree_view,
3377                                            tree_view->priv->button_pressed_tree,
3378                                            tree_view->priv->button_pressed_node);
3379           /* Actually activate the node */
3380           if (tree_view->priv->button_pressed_node->children == NULL)
3381             gtk_tree_view_real_expand_row (tree_view, path,
3382                                            tree_view->priv->button_pressed_tree,
3383                                            tree_view->priv->button_pressed_node,
3384                                            FALSE, TRUE);
3385           else
3386             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3387                                              tree_view->priv->button_pressed_tree,
3388                                              tree_view->priv->button_pressed_node, TRUE);
3389           gtk_tree_path_free (path);
3390         }
3391
3392       gtk_grab_remove (widget);
3393       tree_view->priv->button_pressed_tree = NULL;
3394       tree_view->priv->button_pressed_node = NULL;
3395     }
3396
3397   return TRUE;
3398 }
3399
3400 static gboolean
3401 gtk_tree_view_grab_broken (GtkWidget          *widget,
3402                            GdkEventGrabBroken *event)
3403 {
3404   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3405
3406   if (tree_view->priv->in_column_drag)
3407     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3408
3409   if (tree_view->priv->in_column_resize)
3410     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3411
3412   return TRUE;
3413 }
3414
3415 #if 0
3416 static gboolean
3417 gtk_tree_view_configure (GtkWidget *widget,
3418                          GdkEventConfigure *event)
3419 {
3420   GtkTreeView *tree_view;
3421
3422   tree_view = GTK_TREE_VIEW (widget);
3423   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3424
3425   return FALSE;
3426 }
3427 #endif
3428
3429 /* GtkWidget::motion_event function set.
3430  */
3431
3432 static gboolean
3433 coords_are_over_arrow (GtkTreeView *tree_view,
3434                        GtkRBTree   *tree,
3435                        GtkRBNode   *node,
3436                        /* these are in bin window coords */
3437                        gint         x,
3438                        gint         y)
3439 {
3440   GdkRectangle arrow;
3441   gint x2;
3442
3443   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3444     return FALSE;
3445
3446   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3447     return FALSE;
3448
3449   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3450   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3451
3452   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3453
3454   arrow.width = x2 - arrow.x;
3455
3456   return (x >= arrow.x &&
3457           x < (arrow.x + arrow.width) &&
3458           y >= arrow.y &&
3459           y < (arrow.y + arrow.height));
3460 }
3461
3462 static gboolean
3463 auto_expand_timeout (gpointer data)
3464 {
3465   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3466   GtkTreePath *path;
3467
3468   if (tree_view->priv->prelight_node)
3469     {
3470       path = _gtk_tree_view_find_path (tree_view,
3471                                        tree_view->priv->prelight_tree,
3472                                        tree_view->priv->prelight_node);
3473
3474       if (tree_view->priv->prelight_node->children)
3475         gtk_tree_view_collapse_row (tree_view, path);
3476       else
3477         gtk_tree_view_expand_row (tree_view, path, FALSE);
3478
3479       gtk_tree_path_free (path);
3480     }
3481
3482   tree_view->priv->auto_expand_timeout = 0;
3483
3484   return FALSE;
3485 }
3486
3487 static void
3488 remove_auto_expand_timeout (GtkTreeView *tree_view)
3489 {
3490   if (tree_view->priv->auto_expand_timeout != 0)
3491     {
3492       g_source_remove (tree_view->priv->auto_expand_timeout);
3493       tree_view->priv->auto_expand_timeout = 0;
3494     }
3495 }
3496
3497 static void
3498 do_prelight (GtkTreeView *tree_view,
3499              GtkRBTree   *tree,
3500              GtkRBNode   *node,
3501              /* these are in bin_window coords */
3502              gint         x,
3503              gint         y)
3504 {
3505   if (tree_view->priv->prelight_tree == tree &&
3506       tree_view->priv->prelight_node == node)
3507     {
3508       /*  We are still on the same node,
3509           but we might need to take care of the arrow  */
3510
3511       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3512         {
3513           gboolean over_arrow;
3514
3515           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3516
3517           if (over_arrow != tree_view->priv->arrow_prelit)
3518             {
3519               if (over_arrow)
3520                 tree_view->priv->arrow_prelit = TRUE;
3521               else
3522                 tree_view->priv->arrow_prelit = FALSE;
3523
3524               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3525             }
3526         }
3527
3528       return;
3529     }
3530
3531   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3532     {
3533       /*  Unprelight the old node and arrow  */
3534
3535       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3536                              GTK_RBNODE_IS_PRELIT);
3537
3538       if (tree_view->priv->arrow_prelit
3539           && gtk_tree_view_draw_expanders (tree_view))
3540         {
3541           tree_view->priv->arrow_prelit = FALSE;
3542
3543           gtk_tree_view_queue_draw_arrow (tree_view,
3544                                           tree_view->priv->prelight_tree,
3545                                           tree_view->priv->prelight_node);
3546         }
3547
3548       _gtk_tree_view_queue_draw_node (tree_view,
3549                                       tree_view->priv->prelight_tree,
3550                                       tree_view->priv->prelight_node,
3551                                       NULL);
3552     }
3553
3554
3555   if (tree_view->priv->hover_expand)
3556     remove_auto_expand_timeout (tree_view);
3557
3558   /*  Set the new prelight values  */
3559   tree_view->priv->prelight_node = node;
3560   tree_view->priv->prelight_tree = tree;
3561
3562   if (!node || !tree)
3563     return;
3564
3565   /*  Prelight the new node and arrow  */
3566
3567   if (gtk_tree_view_draw_expanders (tree_view)
3568       && coords_are_over_arrow (tree_view, tree, node, x, y))
3569     {
3570       tree_view->priv->arrow_prelit = TRUE;
3571
3572       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3573     }
3574
3575   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3576
3577   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3578
3579   if (tree_view->priv->hover_expand)
3580     {
3581       tree_view->priv->auto_expand_timeout =
3582         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3583     }
3584 }
3585
3586 static void
3587 prelight_or_select (GtkTreeView *tree_view,
3588                     GtkRBTree   *tree,
3589                     GtkRBNode   *node,
3590                     /* these are in bin_window coords */
3591                     gint         x,
3592                     gint         y)
3593 {
3594   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3595
3596   if (tree_view->priv->hover_selection &&
3597       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3598       !(tree_view->priv->edited_column &&
3599         gtk_cell_area_get_edit_widget
3600         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3601     {
3602       if (node)
3603         {
3604           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3605             {
3606               GtkTreePath *path;
3607
3608               path = _gtk_tree_view_find_path (tree_view, tree, node);
3609               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3610               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3611                 {
3612                   tree_view->priv->draw_keyfocus = FALSE;
3613                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3614                 }
3615               gtk_tree_path_free (path);
3616             }
3617         }
3618
3619       else if (mode == GTK_SELECTION_SINGLE)
3620         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3621     }
3622
3623     do_prelight (tree_view, tree, node, x, y);
3624 }
3625
3626 static void
3627 ensure_unprelighted (GtkTreeView *tree_view)
3628 {
3629   do_prelight (tree_view,
3630                NULL, NULL,
3631                -1000, -1000); /* coords not possibly over an arrow */
3632
3633   g_assert (tree_view->priv->prelight_node == NULL);
3634 }
3635
3636 static void
3637 update_prelight (GtkTreeView *tree_view,
3638                  gint         x,
3639                  gint         y)
3640 {
3641   int new_y;
3642   GtkRBTree *tree;
3643   GtkRBNode *node;
3644
3645   if (tree_view->priv->tree == NULL)
3646     return;
3647
3648   if (x == -10000)
3649     {
3650       ensure_unprelighted (tree_view);
3651       return;
3652     }
3653
3654   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3655   if (new_y < 0)
3656     new_y = 0;
3657
3658   _gtk_rbtree_find_offset (tree_view->priv->tree,
3659                            new_y, &tree, &node);
3660
3661   if (node)
3662     prelight_or_select (tree_view, tree, node, x, y);
3663 }
3664
3665
3666
3667
3668 /* Our motion arrow is either a box (in the case of the original spot)
3669  * or an arrow.  It is expander_size wide.
3670  */
3671 /*
3672  * 11111111111111
3673  * 01111111111110
3674  * 00111111111100
3675  * 00011111111000
3676  * 00001111110000
3677  * 00000111100000
3678  * 00000111100000
3679  * 00000111100000
3680  * ~ ~ ~ ~ ~ ~ ~
3681  * 00000111100000
3682  * 00000111100000
3683  * 00000111100000
3684  * 00001111110000
3685  * 00011111111000
3686  * 00111111111100
3687  * 01111111111110
3688  * 11111111111111
3689  */
3690
3691 static void
3692 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3693 {
3694   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3695   GtkWidget *widget = GTK_WIDGET (tree_view);
3696   cairo_surface_t *mask_image;
3697   cairo_region_t *mask_region;
3698   gint x;
3699   gint y;
3700   gint width;
3701   gint height;
3702   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3703   GdkWindowAttr attributes;
3704   guint attributes_mask;
3705   cairo_t *cr;
3706
3707   if (!reorder ||
3708       reorder->left_column == tree_view->priv->drag_column ||
3709       reorder->right_column == tree_view->priv->drag_column)
3710     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3711   else if (reorder->left_column || reorder->right_column)
3712     {
3713       GtkAllocation left_allocation, right_allocation;
3714       GdkRectangle visible_rect;
3715       GtkWidget *button;
3716
3717       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3718       if (reorder->left_column)
3719         {
3720           button = gtk_tree_view_column_get_button (reorder->left_column);
3721           gtk_widget_get_allocation (button, &left_allocation);
3722           x = left_allocation.x + left_allocation.width;
3723         }
3724       else
3725         {
3726           button = gtk_tree_view_column_get_button (reorder->right_column);
3727           gtk_widget_get_allocation (button, &right_allocation);
3728           x = right_allocation.x;
3729         }
3730
3731       if (x < visible_rect.x)
3732         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3733       else if (x > visible_rect.x + visible_rect.width)
3734         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3735       else
3736         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3737     }
3738
3739   /* We want to draw the rectangle over the initial location. */
3740   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3741     {
3742       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3743         {
3744           GtkAllocation drag_allocation;
3745           GtkWidget    *button;
3746
3747           if (tree_view->priv->drag_highlight_window)
3748             {
3749               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3750                                         NULL);
3751               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3752             }
3753
3754           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3755           attributes.window_type = GDK_WINDOW_CHILD;
3756           attributes.wclass = GDK_INPUT_OUTPUT;
3757           attributes.x = tree_view->priv->drag_column_x;
3758           attributes.y = 0;
3759           gtk_widget_get_allocation (button, &drag_allocation);
3760           width = attributes.width = drag_allocation.width;
3761           height = attributes.height = drag_allocation.height;
3762           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3763           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3764           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3765           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3766           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3767
3768           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3769           cr = cairo_create (mask_image);
3770
3771           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3772           cairo_stroke (cr);
3773           cairo_destroy (cr);
3774
3775           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3776           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3777                                            mask_region, 0, 0);
3778
3779           cairo_region_destroy (mask_region);
3780           cairo_surface_destroy (mask_image);
3781
3782           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3783         }
3784     }
3785   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3786     {
3787       GtkAllocation button_allocation;
3788       GtkWidget    *button;
3789
3790       width = tree_view->priv->expander_size;
3791
3792       /* Get x, y, width, height of arrow */
3793       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3794       if (reorder->left_column)
3795         {
3796           button = gtk_tree_view_column_get_button (reorder->left_column);
3797           gtk_widget_get_allocation (button, &button_allocation);
3798           x += button_allocation.x + button_allocation.width - width/2;
3799           height = button_allocation.height;
3800         }
3801       else
3802         {
3803           button = gtk_tree_view_column_get_button (reorder->right_column);
3804           gtk_widget_get_allocation (button, &button_allocation);
3805           x += button_allocation.x - width/2;
3806           height = button_allocation.height;
3807         }
3808       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3809       height += tree_view->priv->expander_size;
3810
3811       /* Create the new window */
3812       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3813         {
3814           if (tree_view->priv->drag_highlight_window)
3815             {
3816               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3817                                         NULL);
3818               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3819             }
3820
3821           attributes.window_type = GDK_WINDOW_TEMP;
3822           attributes.wclass = GDK_INPUT_OUTPUT;
3823           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3824           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3825           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3826           attributes.x = x;
3827           attributes.y = y;
3828           attributes.width = width;
3829           attributes.height = height;
3830           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3831                                                                    &attributes, attributes_mask);
3832           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3833
3834           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3835
3836           cr = cairo_create (mask_image);
3837           cairo_move_to (cr, 0, 0);
3838           cairo_line_to (cr, width, 0);
3839           cairo_line_to (cr, width / 2., width / 2);
3840           cairo_move_to (cr, 0, height);
3841           cairo_line_to (cr, width, height);
3842           cairo_line_to (cr, width / 2., height - width / 2.);
3843           cairo_fill (cr);
3844           cairo_destroy (cr);
3845
3846           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3847           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3848                                            mask_region, 0, 0);
3849
3850           cairo_region_destroy (mask_region);
3851           cairo_surface_destroy (mask_image);
3852         }
3853
3854       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3855       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3856     }
3857   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3858            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3859     {
3860       GtkAllocation allocation;
3861       GtkWidget    *button;
3862
3863       width = tree_view->priv->expander_size;
3864
3865       /* Get x, y, width, height of arrow */
3866       width = width/2; /* remember, the arrow only takes half the available width */
3867       gdk_window_get_origin (gtk_widget_get_window (widget),
3868                              &x, &y);
3869       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3870         {
3871           gtk_widget_get_allocation (widget, &allocation);
3872           x += allocation.width - width;
3873         }
3874
3875       if (reorder->left_column)
3876         {
3877           button = gtk_tree_view_column_get_button (reorder->left_column);
3878           gtk_widget_get_allocation (button, &allocation);
3879           height = allocation.height;
3880         }
3881       else
3882         {
3883           button = gtk_tree_view_column_get_button (reorder->right_column);
3884           gtk_widget_get_allocation (button, &allocation);
3885           height = allocation.height;
3886         }
3887
3888       y -= tree_view->priv->expander_size;
3889       height += 2*tree_view->priv->expander_size;
3890
3891       /* Create the new window */
3892       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3893           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3894         {
3895           if (tree_view->priv->drag_highlight_window)
3896             {
3897               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3898                                         NULL);
3899               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3900             }
3901
3902           attributes.window_type = GDK_WINDOW_TEMP;
3903           attributes.wclass = GDK_INPUT_OUTPUT;
3904           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3905           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3906           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3907           attributes.x = x;
3908           attributes.y = y;
3909           attributes.width = width;
3910           attributes.height = height;
3911           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3912           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3913
3914           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3915
3916           cr = cairo_create (mask_image);
3917           /* mirror if we're on the left */
3918           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3919             {
3920               cairo_translate (cr, width, 0);
3921               cairo_scale (cr, -1, 1);
3922             }
3923           cairo_move_to (cr, 0, 0);
3924           cairo_line_to (cr, width, width);
3925           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3926           cairo_move_to (cr, 0, height);
3927           cairo_line_to (cr, width, height - width);
3928           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3929           cairo_fill (cr);
3930           cairo_destroy (cr);
3931
3932           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3933           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3934                                            mask_region, 0, 0);
3935
3936           cairo_region_destroy (mask_region);
3937           cairo_surface_destroy (mask_image);
3938         }
3939
3940       tree_view->priv->drag_column_window_state = arrow_type;
3941       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3942    }
3943   else
3944     {
3945       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3946       gdk_window_hide (tree_view->priv->drag_highlight_window);
3947       return;
3948     }
3949
3950   gdk_window_show (tree_view->priv->drag_highlight_window);
3951   gdk_window_raise (tree_view->priv->drag_highlight_window);
3952 }
3953
3954 static gboolean
3955 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3956                                     GdkEventMotion *event)
3957 {
3958   gint x;
3959   gint new_width;
3960   GtkTreeViewColumn *column;
3961   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3962
3963   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3964
3965   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3966     gtk_widget_get_pointer (widget, &x, NULL);
3967   else
3968     x = event->x;
3969
3970   if (tree_view->priv->hadjustment)
3971     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3972
3973   new_width = gtk_tree_view_new_column_width (tree_view,
3974                                               tree_view->priv->drag_pos, &x);
3975   if (x != tree_view->priv->x_drag &&
3976       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3977     {
3978       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3979
3980       if (gtk_tree_view_column_get_expand (column))
3981         new_width -= tree_view->priv->last_extra_space_per_column;
3982
3983       _gtk_tree_view_column_set_resized_width (column, new_width);
3984
3985
3986       gtk_widget_queue_resize (widget);
3987     }
3988
3989   return FALSE;
3990 }
3991
3992
3993 static void
3994 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3995 {
3996   GtkTreeViewColumnReorder *reorder = NULL;
3997   GList *list;
3998   gint mouse_x;
3999
4000   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
4001   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4002     {
4003       reorder = (GtkTreeViewColumnReorder *) list->data;
4004       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4005         break;
4006       reorder = NULL;
4007     }
4008
4009   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4010       return;*/
4011
4012   tree_view->priv->cur_reorder = reorder;
4013   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4014 }
4015
4016 static void
4017 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4018 {
4019   GdkRectangle visible_rect;
4020   gint y;
4021   gint offset;
4022
4023   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
4024   y += tree_view->priv->dy;
4025
4026   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4027
4028   /* see if we are near the edge. */
4029   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4030   if (offset > 0)
4031     {
4032       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4033       if (offset < 0)
4034         return;
4035     }
4036
4037   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4038                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4039 }
4040
4041 static gboolean
4042 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
4043 {
4044   GdkRectangle visible_rect;
4045   gint x;
4046   gint offset;
4047
4048   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
4049
4050   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4051
4052   /* See if we are near the edge. */
4053   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4054   if (offset > 0)
4055     {
4056       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4057       if (offset < 0)
4058         return TRUE;
4059     }
4060   offset = offset/3;
4061
4062   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4063                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4064
4065   return TRUE;
4066
4067 }
4068
4069 static gboolean
4070 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4071                                   GdkEventMotion *event)
4072 {
4073   GtkAllocation allocation, button_allocation;
4074   GtkTreeView *tree_view = (GtkTreeView *) widget;
4075   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4076   GtkWidget *button;
4077   gint x, y;
4078
4079   /* Sanity Check */
4080   if ((column == NULL) ||
4081       (event->window != tree_view->priv->drag_window))
4082     return FALSE;
4083
4084   button = gtk_tree_view_column_get_button (column);
4085
4086   /* Handle moving the header */
4087   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4088   gtk_widget_get_allocation (widget, &allocation);
4089   gtk_widget_get_allocation (button, &button_allocation);
4090   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4091              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4092   gdk_window_move (tree_view->priv->drag_window, x, y);
4093
4094   /* autoscroll, if needed */
4095   gtk_tree_view_horizontal_autoscroll (tree_view);
4096   /* Update the current reorder position and arrow; */
4097   gtk_tree_view_update_current_reorder (tree_view);
4098
4099   return TRUE;
4100 }
4101
4102 static void
4103 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4104 {
4105   remove_scroll_timeout (tree_view);
4106   gtk_grab_remove (GTK_WIDGET (tree_view));
4107
4108   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4109     {
4110       GtkTreePath *tmp_path;
4111
4112       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4113
4114       /* The anchor path should be set to the start path */
4115       tmp_path = _gtk_tree_view_find_path (tree_view,
4116                                            tree_view->priv->rubber_band_start_tree,
4117                                            tree_view->priv->rubber_band_start_node);
4118
4119       if (tree_view->priv->anchor)
4120         gtk_tree_row_reference_free (tree_view->priv->anchor);
4121
4122       tree_view->priv->anchor =
4123         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4124                                           tree_view->priv->model,
4125                                           tmp_path);
4126
4127       gtk_tree_path_free (tmp_path);
4128
4129       /* ... and the cursor to the end path */
4130       tmp_path = _gtk_tree_view_find_path (tree_view,
4131                                            tree_view->priv->rubber_band_end_tree,
4132                                            tree_view->priv->rubber_band_end_node);
4133       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
4134       gtk_tree_path_free (tmp_path);
4135
4136       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4137     }
4138
4139   /* Clear status variables */
4140   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4141   tree_view->priv->rubber_band_shift = 0;
4142   tree_view->priv->rubber_band_ctrl = 0;
4143
4144   tree_view->priv->rubber_band_start_node = NULL;
4145   tree_view->priv->rubber_band_start_tree = NULL;
4146   tree_view->priv->rubber_band_end_node = NULL;
4147   tree_view->priv->rubber_band_end_tree = NULL;
4148 }
4149
4150 static void
4151 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4152                                                  GtkRBTree   *start_tree,
4153                                                  GtkRBNode   *start_node,
4154                                                  GtkRBTree   *end_tree,
4155                                                  GtkRBNode   *end_node,
4156                                                  gboolean     select,
4157                                                  gboolean     skip_start,
4158                                                  gboolean     skip_end)
4159 {
4160   if (start_node == end_node)
4161     return;
4162
4163   /* We skip the first node and jump inside the loop */
4164   if (skip_start)
4165     goto skip_first;
4166
4167   do
4168     {
4169       /* Small optimization by assuming insensitive nodes are never
4170        * selected.
4171        */
4172       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4173         {
4174           GtkTreePath *path;
4175           gboolean selectable;
4176
4177           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
4178           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4179           gtk_tree_path_free (path);
4180
4181           if (!selectable)
4182             goto node_not_selectable;
4183         }
4184
4185       if (select)
4186         {
4187           if (tree_view->priv->rubber_band_shift)
4188             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4189           else if (tree_view->priv->rubber_band_ctrl)
4190             {
4191               /* Toggle the selection state */
4192               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4193                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4194               else
4195                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4196             }
4197           else
4198             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4199         }
4200       else
4201         {
4202           /* Mirror the above */
4203           if (tree_view->priv->rubber_band_shift)
4204             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4205           else if (tree_view->priv->rubber_band_ctrl)
4206             {
4207               /* Toggle the selection state */
4208               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4209                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4210               else
4211                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4212             }
4213           else
4214             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4215         }
4216
4217       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4218
4219 node_not_selectable:
4220       if (start_node == end_node)
4221         break;
4222
4223 skip_first:
4224
4225       if (start_node->children)
4226         {
4227           start_tree = start_node->children;
4228           start_node = start_tree->root;
4229           while (start_node->left != start_tree->nil)
4230             start_node = start_node->left;
4231         }
4232       else
4233         {
4234           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4235
4236           if (!start_tree)
4237             /* Ran out of tree */
4238             break;
4239         }
4240
4241       if (skip_end && start_node == end_node)
4242         break;
4243     }
4244   while (TRUE);
4245 }
4246
4247 static void
4248 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4249 {
4250   GtkRBTree *start_tree, *end_tree;
4251   GtkRBNode *start_node, *end_node;
4252
4253   _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);
4254   _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);
4255
4256   /* Handle the start area first */
4257   if (!tree_view->priv->rubber_band_start_node)
4258     {
4259       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4260                                                        start_tree,
4261                                                        start_node,
4262                                                        end_tree,
4263                                                        end_node,
4264                                                        TRUE,
4265                                                        FALSE,
4266                                                        FALSE);
4267     }
4268   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4269            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4270     {
4271       /* New node is above the old one; selection became bigger */
4272       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4273                                                        start_tree,
4274                                                        start_node,
4275                                                        tree_view->priv->rubber_band_start_tree,
4276                                                        tree_view->priv->rubber_band_start_node,
4277                                                        TRUE,
4278                                                        FALSE,
4279                                                        TRUE);
4280     }
4281   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4282            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4283     {
4284       /* New node is below the old one; selection became smaller */
4285       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4286                                                        tree_view->priv->rubber_band_start_tree,
4287                                                        tree_view->priv->rubber_band_start_node,
4288                                                        start_tree,
4289                                                        start_node,
4290                                                        FALSE,
4291                                                        FALSE,
4292                                                        TRUE);
4293     }
4294
4295   tree_view->priv->rubber_band_start_tree = start_tree;
4296   tree_view->priv->rubber_band_start_node = start_node;
4297
4298   /* Next, handle the end area */
4299   if (!tree_view->priv->rubber_band_end_node)
4300     {
4301       /* In the event this happens, start_node was also NULL; this case is
4302        * handled above.
4303        */
4304     }
4305   else if (!end_node)
4306     {
4307       /* Find the last node in the tree */
4308       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4309                                &end_tree, &end_node);
4310
4311       /* Selection reached end of the tree */
4312       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4313                                                        tree_view->priv->rubber_band_end_tree,
4314                                                        tree_view->priv->rubber_band_end_node,
4315                                                        end_tree,
4316                                                        end_node,
4317                                                        TRUE,
4318                                                        TRUE,
4319                                                        FALSE);
4320     }
4321   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4322            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4323     {
4324       /* New node is below the old one; selection became bigger */
4325       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4326                                                        tree_view->priv->rubber_band_end_tree,
4327                                                        tree_view->priv->rubber_band_end_node,
4328                                                        end_tree,
4329                                                        end_node,
4330                                                        TRUE,
4331                                                        TRUE,
4332                                                        FALSE);
4333     }
4334   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4335            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4336     {
4337       /* New node is above the old one; selection became smaller */
4338       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4339                                                        end_tree,
4340                                                        end_node,
4341                                                        tree_view->priv->rubber_band_end_tree,
4342                                                        tree_view->priv->rubber_band_end_node,
4343                                                        FALSE,
4344                                                        TRUE,
4345                                                        FALSE);
4346     }
4347
4348   tree_view->priv->rubber_band_end_tree = end_tree;
4349   tree_view->priv->rubber_band_end_node = end_node;
4350 }
4351
4352 static void
4353 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4354 {
4355   gint x, y;
4356   GdkRectangle old_area;
4357   GdkRectangle new_area;
4358   GdkRectangle common;
4359   cairo_region_t *invalid_region;
4360
4361   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4362   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4363   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4364   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4365
4366   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4367
4368   x = MAX (x, 0);
4369   y = MAX (y, 0) + tree_view->priv->dy;
4370
4371   new_area.x = MIN (tree_view->priv->press_start_x, x);
4372   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4373   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4374   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4375
4376   invalid_region = cairo_region_create_rectangle (&old_area);
4377   cairo_region_union_rectangle (invalid_region, &new_area);
4378
4379   gdk_rectangle_intersect (&old_area, &new_area, &common);
4380   if (common.width > 2 && common.height > 2)
4381     {
4382       cairo_region_t *common_region;
4383
4384       /* make sure the border is invalidated */
4385       common.x += 1;
4386       common.y += 1;
4387       common.width -= 2;
4388       common.height -= 2;
4389
4390       common_region = cairo_region_create_rectangle (&common);
4391
4392       cairo_region_subtract (invalid_region, common_region);
4393       cairo_region_destroy (common_region);
4394     }
4395
4396   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4397
4398   cairo_region_destroy (invalid_region);
4399
4400   tree_view->priv->rubber_band_x = x;
4401   tree_view->priv->rubber_band_y = y;
4402
4403   gtk_tree_view_update_rubber_band_selection (tree_view);
4404 }
4405
4406 static void
4407 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4408                                  cairo_t      *cr)
4409 {
4410   GdkRectangle rect;
4411   GtkStyleContext *context;
4412
4413   cairo_save (cr);
4414
4415   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4416
4417   gtk_style_context_save (context);
4418   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4419
4420   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4421   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4422   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4423   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4424
4425   gdk_cairo_rectangle (cr, &rect);
4426   cairo_clip (cr);
4427
4428   gtk_render_background (context, cr,
4429                          rect.x, rect.y,
4430                          rect.width, rect.height);
4431   gtk_render_frame (context, cr,
4432                     rect.x, rect.y,
4433                     rect.width, rect.height);
4434
4435   gtk_style_context_restore (context);
4436   cairo_restore (cr);
4437 }
4438
4439 static gboolean
4440 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4441                                  GdkEventMotion *event)
4442 {
4443   GtkTreeView *tree_view;
4444   GtkRBTree *tree;
4445   GtkRBNode *node;
4446   gint new_y;
4447
4448   tree_view = (GtkTreeView *) widget;
4449
4450   if (tree_view->priv->tree == NULL)
4451     return FALSE;
4452
4453   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4454     {
4455       gtk_grab_add (GTK_WIDGET (tree_view));
4456       gtk_tree_view_update_rubber_band (tree_view);
4457
4458       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4459     }
4460   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4461     {
4462       gtk_tree_view_update_rubber_band (tree_view);
4463
4464       add_scroll_timeout (tree_view);
4465     }
4466
4467   /* only check for an initiated drag when a button is pressed */
4468   if (tree_view->priv->pressed_button >= 0
4469       && !tree_view->priv->rubber_band_status)
4470     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4471
4472   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4473   if (new_y < 0)
4474     new_y = 0;
4475
4476   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4477
4478   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4479   if ((tree_view->priv->button_pressed_node != NULL) &&
4480       (tree_view->priv->button_pressed_node != node))
4481     node = NULL;
4482
4483   tree_view->priv->event_last_x = event->x;
4484   tree_view->priv->event_last_y = event->y;
4485
4486   prelight_or_select (tree_view, tree, node, event->x, event->y);
4487
4488   return TRUE;
4489 }
4490
4491 static gboolean
4492 gtk_tree_view_motion (GtkWidget      *widget,
4493                       GdkEventMotion *event)
4494 {
4495   GtkTreeView *tree_view;
4496
4497   tree_view = (GtkTreeView *) widget;
4498
4499   /* Resizing a column */
4500   if (tree_view->priv->in_column_resize)
4501     return gtk_tree_view_motion_resize_column (widget, event);
4502
4503   /* Drag column */
4504   if (tree_view->priv->in_column_drag)
4505     return gtk_tree_view_motion_drag_column (widget, event);
4506
4507   /* Sanity check it */
4508   if (event->window == tree_view->priv->bin_window)
4509     return gtk_tree_view_motion_bin_window (widget, event);
4510
4511   return FALSE;
4512 }
4513
4514 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4515  * the tree is empty.
4516  */
4517 static void
4518 invalidate_empty_focus (GtkTreeView *tree_view)
4519 {
4520   GdkRectangle area;
4521
4522   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4523     return;
4524
4525   area.x = 0;
4526   area.y = 0;
4527   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4528   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4529   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4530 }
4531
4532 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4533  * is empty.
4534  */
4535 static void
4536 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4537 {
4538   GtkWidget *widget = GTK_WIDGET (tree_view);
4539   gint w, h;
4540
4541   if (!gtk_widget_has_focus (widget))
4542     return;
4543
4544   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4545   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4546
4547   if (w > 0 && h > 0)
4548     {
4549       GtkStyleContext *context;
4550       GtkStateFlags state;
4551
4552       context = gtk_widget_get_style_context (widget);
4553       state = gtk_widget_get_state_flags (widget);
4554
4555       gtk_style_context_save (context);
4556       gtk_style_context_set_state (context, state);
4557
4558       gtk_render_focus (context, cr, 1, 1, w, h);
4559
4560       gtk_style_context_restore (context);
4561     }
4562 }
4563
4564 typedef enum {
4565   GTK_TREE_VIEW_GRID_LINE,
4566   GTK_TREE_VIEW_TREE_LINE,
4567   GTK_TREE_VIEW_FOREGROUND_LINE
4568 } GtkTreeViewLineType;
4569
4570 static void
4571 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4572                          cairo_t             *cr,
4573                          GtkTreeViewLineType  type,
4574                          int                  x1,
4575                          int                  y1,
4576                          int                  x2,
4577                          int                  y2)
4578 {
4579   cairo_save (cr);
4580
4581   switch (type)
4582     {
4583     case GTK_TREE_VIEW_TREE_LINE:
4584       cairo_set_source_rgb (cr, 0, 0, 0);
4585       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4586       if (tree_view->priv->tree_line_dashes[0])
4587         cairo_set_dash (cr,
4588                         tree_view->priv->tree_line_dashes,
4589                         2, 0.5);
4590       break;
4591     case GTK_TREE_VIEW_GRID_LINE:
4592       cairo_set_source_rgb (cr, 0, 0, 0);
4593       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4594       if (tree_view->priv->grid_line_dashes[0])
4595         cairo_set_dash (cr,
4596                         tree_view->priv->grid_line_dashes,
4597                         2, 0.5);
4598       break;
4599     default:
4600       g_assert_not_reached ();
4601       /* fall through */
4602     case GTK_TREE_VIEW_FOREGROUND_LINE:
4603       {
4604         GtkStyleContext *context;
4605         GtkStateFlags state;
4606         GdkRGBA color;
4607
4608         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4609         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4610
4611         cairo_set_line_width (cr, 1.0);
4612         gtk_style_context_get_color (context, state, &color);
4613         gdk_cairo_set_source_rgba (cr, &color);
4614       }
4615
4616       break;
4617     }
4618
4619   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4620   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4621   cairo_stroke (cr);
4622
4623   cairo_restore (cr);
4624 }
4625
4626 static void
4627 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4628                                cairo_t        *cr,
4629                                gint            n_visible_columns)
4630 {
4631   GList *list = tree_view->priv->columns;
4632   gint i = 0;
4633   gint current_x = 0;
4634
4635   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4636       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4637     return;
4638
4639   /* Only draw the lines for visible rows and columns */
4640   for (list = tree_view->priv->columns; list; list = list->next, i++)
4641     {
4642       GtkTreeViewColumn *column = list->data;
4643
4644       /* We don't want a line for the last column */
4645       if (i == n_visible_columns - 1)
4646         break;
4647
4648       if (!gtk_tree_view_column_get_visible (column))
4649         continue;
4650
4651       current_x += gtk_tree_view_column_get_width (column);
4652
4653       gtk_tree_view_draw_line (tree_view, cr,
4654                                GTK_TREE_VIEW_GRID_LINE,
4655                                current_x - 1, 0,
4656                                current_x - 1, tree_view->priv->height);
4657     }
4658 }
4659
4660 /* Warning: Very scary function.
4661  * Modify at your own risk
4662  *
4663  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4664  * FIXME: It's not...
4665  */
4666 static gboolean
4667 gtk_tree_view_bin_draw (GtkWidget      *widget,
4668                         cairo_t        *cr)
4669 {
4670   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4671   GtkTreePath *path;
4672   GtkRBTree *tree;
4673   GList *list;
4674   GtkRBNode *node;
4675   GtkRBNode *cursor = NULL;
4676   GtkRBTree *cursor_tree = NULL;
4677   GtkRBNode *drag_highlight = NULL;
4678   GtkRBTree *drag_highlight_tree = NULL;
4679   GtkTreeIter iter;
4680   gint new_y;
4681   gint y_offset, cell_offset;
4682   gint max_height;
4683   gint depth;
4684   GdkRectangle background_area;
4685   GdkRectangle cell_area;
4686   GdkRectangle clip;
4687   guint flags;
4688   gint highlight_x;
4689   gint expander_cell_width;
4690   gint bin_window_width;
4691   gint bin_window_height;
4692   GtkTreePath *cursor_path;
4693   GtkTreePath *drag_dest_path;
4694   GList *first_column, *last_column;
4695   gint vertical_separator;
4696   gint horizontal_separator;
4697   gint focus_line_width;
4698   gboolean allow_rules;
4699   gboolean has_can_focus_cell;
4700   gboolean rtl;
4701   gint n_visible_columns;
4702   gint pointer_x, pointer_y;
4703   gint grid_line_width;
4704   gboolean got_pointer = FALSE;
4705   gboolean draw_vgrid_lines, draw_hgrid_lines;
4706   GtkStyleContext *context;
4707   GtkStateFlags state;
4708
4709   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4710   context = gtk_widget_get_style_context (widget);
4711   state = gtk_widget_get_state_flags (widget);
4712
4713   gtk_widget_style_get (widget,
4714                         "horizontal-separator", &horizontal_separator,
4715                         "vertical-separator", &vertical_separator,
4716                         "allow-rules", &allow_rules,
4717                         "focus-line-width", &focus_line_width,
4718                         NULL);
4719
4720   if (tree_view->priv->tree == NULL)
4721     {
4722       draw_empty_focus (tree_view, cr);
4723       return TRUE;
4724     }
4725
4726   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4727   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4728   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4729   cairo_clip (cr);
4730   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4731     return TRUE;
4732
4733   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4734
4735   if (new_y < 0)
4736     new_y = 0;
4737   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4738
4739   if (tree_view->priv->height < bin_window_height)
4740     {
4741       gtk_style_context_save (context);
4742       gtk_style_context_set_state (context, state);
4743       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4744
4745       gtk_render_background (context, cr,
4746                              0, tree_view->priv->height,
4747                              bin_window_width,
4748                              bin_window_height - tree_view->priv->height);
4749
4750       gtk_style_context_restore (context);
4751     }
4752
4753   if (node == NULL)
4754     return TRUE;
4755
4756   /* find the path for the node */
4757   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4758                                    tree,
4759                                    node);
4760   gtk_tree_model_get_iter (tree_view->priv->model,
4761                            &iter,
4762                            path);
4763   depth = gtk_tree_path_get_depth (path);
4764   gtk_tree_path_free (path);
4765
4766   cursor_path = NULL;
4767   drag_dest_path = NULL;
4768
4769   if (tree_view->priv->cursor)
4770     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4771
4772   if (cursor_path)
4773     _gtk_tree_view_find_node (tree_view, cursor_path,
4774                               &cursor_tree, &cursor);
4775
4776   if (tree_view->priv->drag_dest_row)
4777     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4778
4779   if (drag_dest_path)
4780     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4781                               &drag_highlight_tree, &drag_highlight);
4782
4783   draw_vgrid_lines =
4784     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4785     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4786   draw_hgrid_lines =
4787     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4788     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4789
4790   if (draw_vgrid_lines || draw_hgrid_lines)
4791     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4792
4793   n_visible_columns = 0;
4794   for (list = tree_view->priv->columns; list; list = list->next)
4795     {
4796       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4797         continue;
4798       n_visible_columns ++;
4799     }
4800
4801   /* Find the last column */
4802   for (last_column = g_list_last (tree_view->priv->columns);
4803        last_column &&
4804        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4805        last_column = last_column->prev)
4806     ;
4807
4808   /* and the first */
4809   for (first_column = g_list_first (tree_view->priv->columns);
4810        first_column &&
4811        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4812        first_column = first_column->next)
4813     ;
4814
4815   /* Actually process the expose event.  To do this, we want to
4816    * start at the first node of the event, and walk the tree in
4817    * order, drawing each successive node.
4818    */
4819
4820   do
4821     {
4822       gboolean parity;
4823       gboolean is_separator = FALSE;
4824       gboolean is_first = FALSE;
4825       gboolean is_last = FALSE;
4826       gint n_col = 0;
4827
4828       is_separator = row_is_separator (tree_view, &iter, NULL);
4829
4830       max_height = gtk_tree_view_get_row_height (tree_view, node);
4831
4832       cell_offset = 0;
4833       highlight_x = 0; /* should match x coord of first cell */
4834       expander_cell_width = 0;
4835
4836       background_area.y = y_offset + clip.y;
4837       background_area.height = max_height;
4838
4839       flags = 0;
4840
4841       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4842         flags |= GTK_CELL_RENDERER_PRELIT;
4843
4844       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4845         flags |= GTK_CELL_RENDERER_SELECTED;
4846
4847       parity = _gtk_rbtree_node_find_parity (tree, node);
4848
4849       /* we *need* to set cell data on all cells before the call
4850        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4851        * return a correct value.
4852        */
4853       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4854            list;
4855            list = (rtl ? list->prev : list->next))
4856         {
4857           GtkTreeViewColumn *column = list->data;
4858           gtk_tree_view_column_cell_set_cell_data (column,
4859                                                    tree_view->priv->model,
4860                                                    &iter,
4861                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4862                                                    node->children?TRUE:FALSE);
4863         }
4864
4865       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4866
4867       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4868            list;
4869            list = (rtl ? list->prev : list->next))
4870         {
4871           GtkTreeViewColumn *column = list->data;
4872           GtkRegionFlags row_flags = 0, column_flags = 0;
4873           GtkStateFlags state = 0;
4874           gint width;
4875           gboolean draw_focus;
4876
4877           if (!gtk_tree_view_column_get_visible (column))
4878             continue;
4879
4880           n_col++;
4881           width = gtk_tree_view_column_get_width (column);
4882
4883           if (cell_offset > clip.x + clip.width ||
4884               cell_offset + width < clip.x)
4885             {
4886               cell_offset += width;
4887               continue;
4888             }
4889
4890           if (gtk_tree_view_column_get_sort_indicator (column))
4891             flags |= GTK_CELL_RENDERER_SORTED;
4892           else
4893             flags &= ~GTK_CELL_RENDERER_SORTED;
4894
4895           if (cursor == node)
4896             flags |= GTK_CELL_RENDERER_FOCUSED;
4897           else
4898             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4899
4900           background_area.x = cell_offset;
4901           background_area.width = width;
4902
4903           cell_area = background_area;
4904           cell_area.y += vertical_separator / 2;
4905           cell_area.x += horizontal_separator / 2;
4906           cell_area.height -= vertical_separator;
4907           cell_area.width -= horizontal_separator;
4908
4909           if (draw_vgrid_lines)
4910             {
4911               if (list == first_column)
4912                 {
4913                   cell_area.width -= grid_line_width / 2;
4914                 }
4915               else if (list == last_column)
4916                 {
4917                   cell_area.x += grid_line_width / 2;
4918                   cell_area.width -= grid_line_width / 2;
4919                 }
4920               else
4921                 {
4922                   cell_area.x += grid_line_width / 2;
4923                   cell_area.width -= grid_line_width;
4924                 }
4925             }
4926
4927           if (draw_hgrid_lines)
4928             {
4929               cell_area.y += grid_line_width / 2;
4930               cell_area.height -= grid_line_width;
4931             }
4932
4933           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4934             {
4935               cell_offset += gtk_tree_view_column_get_width (column);
4936               continue;
4937             }
4938
4939           gtk_tree_view_column_cell_set_cell_data (column,
4940                                                    tree_view->priv->model,
4941                                                    &iter,
4942                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4943                                                    node->children?TRUE:FALSE);
4944
4945           /* Select the detail for drawing the cell.  relevant
4946            * factors are parity, sortedness, and whether to
4947            * display rules.
4948            */
4949           if (allow_rules && tree_view->priv->has_rules)
4950             {
4951               if (parity)
4952                 row_flags |= GTK_REGION_ODD;
4953               else
4954                 row_flags |= GTK_REGION_EVEN;
4955             }
4956
4957           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4958               n_visible_columns >= 3)
4959             column_flags |= GTK_REGION_SORTED;
4960
4961           is_first = (rtl ? !list->next : !list->prev);
4962           is_last = (rtl ? !list->prev : !list->next);
4963
4964           if (is_first)
4965             column_flags |= GTK_REGION_FIRST;
4966
4967           if (is_last)
4968             column_flags |= GTK_REGION_LAST;
4969
4970           if ((n_col % 2) == 0)
4971             column_flags |= GTK_REGION_EVEN;
4972           else
4973             column_flags |= GTK_REGION_ODD;
4974
4975           gtk_style_context_save (context);
4976
4977           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4978           gtk_style_context_set_state (context, state);
4979
4980           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4981           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4982           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4983
4984           if (node == cursor && has_can_focus_cell
4985               && ((column == tree_view->priv->focus_column
4986                    && tree_view->priv->draw_keyfocus &&
4987                    gtk_widget_has_focus (widget))
4988                   || (column == tree_view->priv->edited_column)))
4989             draw_focus = TRUE;
4990           else
4991             draw_focus = FALSE;
4992
4993           /* Draw background */
4994           gtk_render_background (context, cr,
4995                                  background_area.x,
4996                                  background_area.y,
4997                                  background_area.width,
4998                                  background_area.height);
4999
5000           /* Draw frame */
5001           gtk_render_frame (context, cr,
5002                             background_area.x,
5003                             background_area.y,
5004                             background_area.width,
5005                             background_area.height);
5006
5007           if (gtk_tree_view_is_expander_column (tree_view, column))
5008             {
5009               if (!rtl)
5010                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5011               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5012
5013               if (gtk_tree_view_draw_expanders (tree_view))
5014                 {
5015                   if (!rtl)
5016                     cell_area.x += depth * tree_view->priv->expander_size;
5017                   cell_area.width -= depth * tree_view->priv->expander_size;
5018                 }
5019
5020               /* If we have an expander column, the highlight underline
5021                * starts with that column, so that it indicates which
5022                * level of the tree we're dropping at.
5023                */
5024               highlight_x = cell_area.x;
5025               expander_cell_width = cell_area.width;
5026
5027               if (is_separator)
5028                 gtk_render_line (context, cr,
5029                                  cell_area.x,
5030                                  cell_area.y + cell_area.height / 2,
5031                                  cell_area.x + cell_area.width,
5032                                  cell_area.y + cell_area.height / 2);
5033               else
5034                 _gtk_tree_view_column_cell_render (column,
5035                                                    cr,
5036                                                    &background_area,
5037                                                    &cell_area,
5038                                                    flags,
5039                                                    draw_focus);
5040               if (gtk_tree_view_draw_expanders (tree_view)
5041                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5042                 {
5043                   if (!got_pointer)
5044                     {
5045                       gdk_window_get_pointer (tree_view->priv->bin_window,
5046                                               &pointer_x, &pointer_y, NULL);
5047                       got_pointer = TRUE;
5048                     }
5049
5050                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5051                                             cr,
5052                                             tree,
5053                                             node,
5054                                             pointer_x, pointer_y);
5055                 }
5056             }
5057           else
5058             {
5059               if (is_separator)
5060                 {
5061                   gtk_style_context_save (context);
5062                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5063
5064                   gtk_render_line (context, cr,
5065                                    cell_area.x,
5066                                    cell_area.y + cell_area.height / 2,
5067                                    cell_area.x + cell_area.width,
5068                                    cell_area.y + cell_area.height / 2);
5069
5070                   gtk_style_context_restore (context);
5071                 }
5072               else
5073                 _gtk_tree_view_column_cell_render (column,
5074                                                    cr,
5075                                                    &background_area,
5076                                                    &cell_area,
5077                                                    flags,
5078                                                    draw_focus);
5079             }
5080
5081           if (draw_hgrid_lines)
5082             {
5083               if (background_area.y > 0)
5084                 gtk_tree_view_draw_line (tree_view, cr,
5085                                          GTK_TREE_VIEW_GRID_LINE,
5086                                          background_area.x, background_area.y,
5087                                          background_area.x + background_area.width,
5088                                          background_area.y);
5089
5090               if (y_offset + max_height >= clip.height)
5091                 gtk_tree_view_draw_line (tree_view, cr,
5092                                          GTK_TREE_VIEW_GRID_LINE,
5093                                          background_area.x, background_area.y + max_height,
5094                                          background_area.x + background_area.width,
5095                                          background_area.y + max_height);
5096             }
5097
5098           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5099               tree_view->priv->tree_lines_enabled)
5100             {
5101               gint x = background_area.x;
5102               gint mult = rtl ? -1 : 1;
5103               gint y0 = background_area.y;
5104               gint y1 = background_area.y + background_area.height/2;
5105               gint y2 = background_area.y + background_area.height;
5106
5107               if (rtl)
5108                 x += background_area.width - 1;
5109
5110               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5111                   && depth > 1)
5112                 {
5113                   gtk_tree_view_draw_line (tree_view, cr,
5114                                            GTK_TREE_VIEW_TREE_LINE,
5115                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5116                                            y1,
5117                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5118                                            y1);
5119                 }
5120               else if (depth > 1)
5121                 {
5122                   gtk_tree_view_draw_line (tree_view, cr,
5123                                            GTK_TREE_VIEW_TREE_LINE,
5124                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5125                                            y1,
5126                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5127                                            y1);
5128                 }
5129
5130               if (depth > 1)
5131                 {
5132                   gint i;
5133                   GtkRBNode *tmp_node;
5134                   GtkRBTree *tmp_tree;
5135
5136                   if (!_gtk_rbtree_next (tree, node))
5137                     gtk_tree_view_draw_line (tree_view, cr,
5138                                              GTK_TREE_VIEW_TREE_LINE,
5139                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5140                                              y0,
5141                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5142                                              y1);
5143                   else
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                                              y2);
5150
5151                   tmp_node = tree->parent_node;
5152                   tmp_tree = tree->parent_tree;
5153
5154                   for (i = depth - 2; i > 0; i--)
5155                     {
5156                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5157                         gtk_tree_view_draw_line (tree_view, cr,
5158                                                  GTK_TREE_VIEW_TREE_LINE,
5159                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5160                                                  y0,
5161                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5162                                                  y2);
5163
5164                       tmp_node = tmp_tree->parent_node;
5165                       tmp_tree = tmp_tree->parent_tree;
5166                     }
5167                 }
5168             }
5169
5170           gtk_style_context_restore (context);
5171           cell_offset += gtk_tree_view_column_get_width (column);
5172         }
5173
5174       if (node == drag_highlight)
5175         {
5176           /* Draw indicator for the drop
5177            */
5178           gint highlight_y = -1;
5179           GtkRBTree *tree = NULL;
5180           GtkRBNode *node = NULL;
5181
5182           switch (tree_view->priv->drag_dest_pos)
5183             {
5184             case GTK_TREE_VIEW_DROP_BEFORE:
5185               highlight_y = background_area.y - 1;
5186               if (highlight_y < 0)
5187                       highlight_y = 0;
5188               break;
5189
5190             case GTK_TREE_VIEW_DROP_AFTER:
5191               highlight_y = background_area.y + background_area.height - 1;
5192               break;
5193
5194             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5195             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5196               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5197
5198               if (tree == NULL)
5199                 break;
5200
5201               gtk_render_focus (context, cr,
5202                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5203                                    - focus_line_width / 2,
5204                                 gdk_window_get_width (tree_view->priv->bin_window),
5205                                 gtk_tree_view_get_row_height (tree_view, node)
5206                                    - focus_line_width + 1);
5207               break;
5208             }
5209
5210           if (highlight_y >= 0)
5211             {
5212               gtk_tree_view_draw_line (tree_view, cr,
5213                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5214                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5215                                        highlight_y,
5216                                        rtl ? 0 : bin_window_width,
5217                                        highlight_y);
5218             }
5219         }
5220
5221       /* draw the big row-spanning focus rectangle, if needed */
5222       if (!has_can_focus_cell && node == cursor &&
5223           tree_view->priv->draw_keyfocus &&
5224           gtk_widget_has_focus (widget))
5225         {
5226           gint tmp_y, tmp_height;
5227           GtkStateFlags focus_rect_state = 0;
5228
5229           gtk_style_context_save (context);
5230
5231           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5232           gtk_style_context_set_state (context, focus_rect_state);
5233
5234           if (draw_hgrid_lines)
5235             {
5236               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5237               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5238             }
5239           else
5240             {
5241               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5242               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5243             }
5244
5245           gtk_render_focus (context, cr,
5246                             0, tmp_y,
5247                             gdk_window_get_width (tree_view->priv->bin_window),
5248                             tmp_height);
5249
5250           gtk_style_context_restore (context);
5251         }
5252
5253       y_offset += max_height;
5254       if (node->children)
5255         {
5256           GtkTreeIter parent = iter;
5257           gboolean has_child;
5258
5259           tree = node->children;
5260           node = tree->root;
5261
5262           g_assert (node != tree->nil);
5263
5264           while (node->left != tree->nil)
5265             node = node->left;
5266           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5267                                                     &iter,
5268                                                     &parent);
5269           depth++;
5270
5271           /* Sanity Check! */
5272           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5273         }
5274       else
5275         {
5276           gboolean done = FALSE;
5277
5278           do
5279             {
5280               node = _gtk_rbtree_next (tree, node);
5281               if (node != NULL)
5282                 {
5283                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5284                   done = TRUE;
5285
5286                   /* Sanity Check! */
5287                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5288                 }
5289               else
5290                 {
5291                   GtkTreeIter parent_iter = iter;
5292                   gboolean has_parent;
5293
5294                   node = tree->parent_node;
5295                   tree = tree->parent_tree;
5296                   if (tree == NULL)
5297                     /* we should go to done to free some memory */
5298                     goto done;
5299                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5300                                                            &iter,
5301                                                            &parent_iter);
5302                   depth--;
5303
5304                   /* Sanity check */
5305                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5306                 }
5307             }
5308           while (!done);
5309         }
5310     }
5311   while (y_offset < clip.height);
5312
5313 done:
5314   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5315
5316   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5317     gtk_tree_view_paint_rubber_band (tree_view, cr);
5318
5319   if (cursor_path)
5320     gtk_tree_path_free (cursor_path);
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 TRUE;
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     return TRUE;
5931
5932   tree_view = GTK_TREE_VIEW (widget);
5933
5934   if (tree_view->priv->prelight_node)
5935     _gtk_tree_view_queue_draw_node (tree_view,
5936                                    tree_view->priv->prelight_tree,
5937                                    tree_view->priv->prelight_node,
5938                                    NULL);
5939
5940   tree_view->priv->event_last_x = -10000;
5941   tree_view->priv->event_last_y = -10000;
5942
5943   prelight_or_select (tree_view,
5944                       NULL, NULL,
5945                       -1000, -1000); /* coords not possibly over an arrow */
5946
5947   return TRUE;
5948 }
5949
5950
5951 static gint
5952 gtk_tree_view_focus_out (GtkWidget     *widget,
5953                          GdkEventFocus *event)
5954 {
5955   GtkTreeView *tree_view;
5956
5957   tree_view = GTK_TREE_VIEW (widget);
5958
5959   gtk_widget_queue_draw (widget);
5960
5961   /* destroy interactive search dialog */
5962   if (tree_view->priv->search_window)
5963     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5964                                       gdk_event_get_device ((GdkEvent *) event));
5965
5966   return FALSE;
5967 }
5968
5969
5970 /* Incremental Reflow
5971  */
5972
5973 static void
5974 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5975                                  GtkRBTree   *tree,
5976                                  GtkRBNode   *node)
5977 {
5978   GtkAllocation allocation;
5979   gint y;
5980
5981   y = _gtk_rbtree_node_find_offset (tree, node)
5982     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5983     + gtk_tree_view_get_effective_header_height (tree_view);
5984
5985   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5986   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5987                               0, y,
5988                               allocation.width,
5989                               GTK_RBNODE_GET_HEIGHT (node));
5990 }
5991
5992 static gboolean
5993 node_is_visible (GtkTreeView *tree_view,
5994                  GtkRBTree   *tree,
5995                  GtkRBNode   *node)
5996 {
5997   int y;
5998   int height;
5999
6000   y = _gtk_rbtree_node_find_offset (tree, node);
6001   height = gtk_tree_view_get_row_height (tree_view, node);
6002
6003   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6004       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6005                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6006     return TRUE;
6007
6008   return FALSE;
6009 }
6010
6011 /* Returns TRUE if it updated the size
6012  */
6013 static gboolean
6014 validate_row (GtkTreeView *tree_view,
6015               GtkRBTree   *tree,
6016               GtkRBNode   *node,
6017               GtkTreeIter *iter,
6018               GtkTreePath *path)
6019 {
6020   GtkTreeViewColumn *column;
6021   GList *list, *first_column, *last_column;
6022   gint height = 0;
6023   gint horizontal_separator;
6024   gint vertical_separator;
6025   gint depth = gtk_tree_path_get_depth (path);
6026   gboolean retval = FALSE;
6027   gboolean is_separator = FALSE;
6028   gboolean draw_vgrid_lines, draw_hgrid_lines;
6029   gint focus_pad;
6030   gint grid_line_width;
6031   gboolean wide_separators;
6032   gint separator_height;
6033
6034   /* double check the row needs validating */
6035   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6036       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6037     return FALSE;
6038
6039   is_separator = row_is_separator (tree_view, iter, NULL);
6040
6041   gtk_widget_style_get (GTK_WIDGET (tree_view),
6042                         "focus-padding", &focus_pad,
6043                         "horizontal-separator", &horizontal_separator,
6044                         "vertical-separator", &vertical_separator,
6045                         "grid-line-width", &grid_line_width,
6046                         "wide-separators",  &wide_separators,
6047                         "separator-height", &separator_height,
6048                         NULL);
6049
6050   draw_vgrid_lines =
6051     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6052     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6053   draw_hgrid_lines =
6054     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6055     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6056
6057   for (last_column = g_list_last (tree_view->priv->columns);
6058        last_column &&
6059        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6060        last_column = last_column->prev)
6061     ;
6062
6063   for (first_column = g_list_first (tree_view->priv->columns);
6064        first_column &&
6065        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6066        first_column = first_column->next)
6067     ;
6068
6069   for (list = tree_view->priv->columns; list; list = list->next)
6070     {
6071       gint padding = 0;
6072       gint original_width;
6073       gint new_width;
6074       gint row_height;
6075
6076       column = list->data;
6077
6078       if (!gtk_tree_view_column_get_visible (column))
6079         continue;
6080
6081       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6082           !_gtk_tree_view_column_cell_get_dirty (column))
6083         continue;
6084
6085       original_width = _gtk_tree_view_column_get_requested_width (column);
6086
6087       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6088                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6089                                                node->children?TRUE:FALSE);
6090       gtk_tree_view_column_cell_get_size (column,
6091                                           NULL, NULL, NULL,
6092                                           NULL, &row_height);
6093
6094       if (!is_separator)
6095         {
6096           row_height += vertical_separator;
6097           height = MAX (height, row_height);
6098           height = MAX (height, tree_view->priv->expander_size);
6099         }
6100       else
6101         {
6102           if (wide_separators)
6103             height = separator_height + 2 * focus_pad;
6104           else
6105             height = 2 + 2 * focus_pad;
6106         }
6107
6108       if (gtk_tree_view_is_expander_column (tree_view, column))
6109         {
6110           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6111
6112           if (gtk_tree_view_draw_expanders (tree_view))
6113             padding += depth * tree_view->priv->expander_size;
6114         }
6115       else
6116         padding += horizontal_separator;
6117
6118       if (draw_vgrid_lines)
6119         {
6120           if (list->data == first_column || list->data == last_column)
6121             padding += grid_line_width / 2.0;
6122           else
6123             padding += grid_line_width;
6124         }
6125
6126       /* Update the padding for the column */
6127       _gtk_tree_view_column_push_padding (column, padding);
6128       new_width = _gtk_tree_view_column_get_requested_width (column);
6129
6130       if (new_width > original_width)
6131         retval = TRUE;
6132     }
6133
6134   if (draw_hgrid_lines)
6135     height += grid_line_width;
6136
6137   if (height != GTK_RBNODE_GET_HEIGHT (node))
6138     {
6139       retval = TRUE;
6140       _gtk_rbtree_node_set_height (tree, node, height);
6141     }
6142   _gtk_rbtree_node_mark_valid (tree, node);
6143   tree_view->priv->post_validation_flag = TRUE;
6144
6145   return retval;
6146 }
6147
6148
6149 static void
6150 validate_visible_area (GtkTreeView *tree_view)
6151 {
6152   GtkAllocation allocation;
6153   GtkTreePath *path = NULL;
6154   GtkTreePath *above_path = NULL;
6155   GtkTreeIter iter;
6156   GtkRBTree *tree = NULL;
6157   GtkRBNode *node = NULL;
6158   gboolean need_redraw = FALSE;
6159   gboolean size_changed = FALSE;
6160   gint total_height;
6161   gint area_above = 0;
6162   gint area_below = 0;
6163
6164   if (tree_view->priv->tree == NULL)
6165     return;
6166
6167   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6168       tree_view->priv->scroll_to_path == NULL)
6169     return;
6170
6171   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6172   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6173
6174   if (total_height == 0)
6175     return;
6176
6177   /* First, we check to see if we need to scroll anywhere
6178    */
6179   if (tree_view->priv->scroll_to_path)
6180     {
6181       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6182       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6183         {
6184           /* we are going to scroll, and will update dy */
6185           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6186           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6187               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6188             {
6189               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6190               if (validate_row (tree_view, tree, node, &iter, path))
6191                 size_changed = TRUE;
6192             }
6193
6194           if (tree_view->priv->scroll_to_use_align)
6195             {
6196               gint height = gtk_tree_view_get_row_height (tree_view, node);
6197               area_above = (total_height - height) *
6198                 tree_view->priv->scroll_to_row_align;
6199               area_below = total_height - area_above - height;
6200               area_above = MAX (area_above, 0);
6201               area_below = MAX (area_below, 0);
6202             }
6203           else
6204             {
6205               /* two cases:
6206                * 1) row not visible
6207                * 2) row visible
6208                */
6209               gint dy;
6210               gint height = gtk_tree_view_get_row_height (tree_view, node);
6211
6212               dy = _gtk_rbtree_node_find_offset (tree, node);
6213
6214               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6215                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6216                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6217                 {
6218                   /* row visible: keep the row at the same position */
6219                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6220                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6221                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6222                                - dy - height;
6223                 }
6224               else
6225                 {
6226                   /* row not visible */
6227                   if (dy >= 0
6228                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6229                     {
6230                       /* row at the beginning -- fixed */
6231                       area_above = dy;
6232                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6233                                    - area_above - height;
6234                     }
6235                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6236                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6237                     {
6238                       /* row at the end -- fixed */
6239                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6240                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6241                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6242                                    area_above - height;
6243
6244                       if (area_below < 0)
6245                         {
6246                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6247                           area_below = 0;
6248                         }
6249                     }
6250                   else
6251                     {
6252                       /* row somewhere in the middle, bring it to the top
6253                        * of the view
6254                        */
6255                       area_above = 0;
6256                       area_below = total_height - height;
6257                     }
6258                 }
6259             }
6260         }
6261       else
6262         /* the scroll to isn't valid; ignore it.
6263          */
6264         {
6265           if (tree_view->priv->scroll_to_path && !path)
6266             {
6267               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6268               tree_view->priv->scroll_to_path = NULL;
6269             }
6270           if (path)
6271             gtk_tree_path_free (path);
6272           path = NULL;
6273         }
6274     }
6275
6276   /* We didn't have a scroll_to set, so we just handle things normally
6277    */
6278   if (path == NULL)
6279     {
6280       gint offset;
6281
6282       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6283                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6284                                         &tree, &node);
6285       if (node == NULL)
6286         {
6287           /* In this case, nothing has been validated */
6288           path = gtk_tree_path_new_first ();
6289           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6290         }
6291       else
6292         {
6293           path = _gtk_tree_view_find_path (tree_view, tree, node);
6294           total_height += offset;
6295         }
6296
6297       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6298
6299       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6300           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6301         {
6302           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6303           if (validate_row (tree_view, tree, node, &iter, path))
6304             size_changed = TRUE;
6305         }
6306       area_above = 0;
6307       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6308     }
6309
6310   above_path = gtk_tree_path_copy (path);
6311
6312   /* if we do not validate any row above the new top_row, we will make sure
6313    * that the row immediately above top_row has been validated. (if we do not
6314    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6315    * when invalidated that row's height will be zero. and this will mess up
6316    * scrolling).
6317    */
6318   if (area_above == 0)
6319     {
6320       GtkRBTree *tmptree;
6321       GtkRBNode *tmpnode;
6322
6323       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6324       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6325
6326       if (tmpnode)
6327         {
6328           GtkTreePath *tmppath;
6329           GtkTreeIter tmpiter;
6330
6331           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6332           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6333
6334           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6335               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6336             {
6337               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6338               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6339                 size_changed = TRUE;
6340             }
6341
6342           gtk_tree_path_free (tmppath);
6343         }
6344     }
6345
6346   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6347    * backwards is much slower then forward, as there is no iter_prev function.
6348    * We go forwards first in case we run out of tree.  Then we go backwards to
6349    * fill out the top.
6350    */
6351   while (node && area_below > 0)
6352     {
6353       if (node->children)
6354         {
6355           GtkTreeIter parent = iter;
6356           gboolean has_child;
6357
6358           tree = node->children;
6359           node = tree->root;
6360
6361           g_assert (node != tree->nil);
6362
6363           while (node->left != tree->nil)
6364             node = node->left;
6365           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6366                                                     &iter,
6367                                                     &parent);
6368           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6369           gtk_tree_path_down (path);
6370         }
6371       else
6372         {
6373           gboolean done = FALSE;
6374           do
6375             {
6376               node = _gtk_rbtree_next (tree, node);
6377               if (node != NULL)
6378                 {
6379                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6380                   done = TRUE;
6381                   gtk_tree_path_next (path);
6382
6383                   /* Sanity Check! */
6384                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6385                 }
6386               else
6387                 {
6388                   GtkTreeIter parent_iter = iter;
6389                   gboolean has_parent;
6390
6391                   node = tree->parent_node;
6392                   tree = tree->parent_tree;
6393                   if (tree == NULL)
6394                     break;
6395                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6396                                                            &iter,
6397                                                            &parent_iter);
6398                   gtk_tree_path_up (path);
6399
6400                   /* Sanity check */
6401                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6402                 }
6403             }
6404           while (!done);
6405         }
6406
6407       if (!node)
6408         break;
6409
6410       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6411           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6412         {
6413           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6414           if (validate_row (tree_view, tree, node, &iter, path))
6415               size_changed = TRUE;
6416         }
6417
6418       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6419     }
6420   gtk_tree_path_free (path);
6421
6422   /* If we ran out of tree, and have extra area_below left, we need to add it
6423    * to area_above */
6424   if (area_below > 0)
6425     area_above += area_below;
6426
6427   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6428
6429   /* We walk backwards */
6430   while (area_above > 0)
6431     {
6432       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6433
6434       /* Always find the new path in the tree.  We cannot just assume
6435        * a gtk_tree_path_prev() is enough here, as there might be children
6436        * in between this node and the previous sibling node.  If this
6437        * appears to be a performance hotspot in profiles, we can look into
6438        * intrigate logic for keeping path, node and iter in sync like
6439        * we do for forward walks.  (Which will be hard because of the lacking
6440        * iter_prev).
6441        */
6442
6443       if (node == NULL)
6444         break;
6445
6446       gtk_tree_path_free (above_path);
6447       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6448
6449       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6450
6451       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6452           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6453         {
6454           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6455           if (validate_row (tree_view, tree, node, &iter, above_path))
6456             size_changed = TRUE;
6457         }
6458       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6459     }
6460
6461   /* if we scrolled to a path, we need to set the dy here,
6462    * and sync the top row accordingly
6463    */
6464   if (tree_view->priv->scroll_to_path)
6465     {
6466       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6467       gtk_tree_view_top_row_to_dy (tree_view);
6468
6469       need_redraw = TRUE;
6470     }
6471   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6472     {
6473       /* when we are not scrolling, we should never set dy to something
6474        * else than zero. we update top_row to be in sync with dy = 0.
6475        */
6476       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6477       gtk_tree_view_dy_to_top_row (tree_view);
6478     }
6479   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6480     {
6481       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6482       gtk_tree_view_dy_to_top_row (tree_view);
6483     }
6484   else
6485     gtk_tree_view_top_row_to_dy (tree_view);
6486
6487   /* update width/height and queue a resize */
6488   if (size_changed)
6489     {
6490       GtkRequisition requisition;
6491
6492       /* We temporarily guess a size, under the assumption that it will be the
6493        * same when we get our next size_allocate.  If we don't do this, we'll be
6494        * in an inconsistent state if we call top_row_to_dy. */
6495
6496       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6497                                      &requisition, NULL);
6498       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6499                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6500       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6501                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6502       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6503     }
6504
6505   if (tree_view->priv->scroll_to_path)
6506     {
6507       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6508       tree_view->priv->scroll_to_path = NULL;
6509     }
6510
6511   if (above_path)
6512     gtk_tree_path_free (above_path);
6513
6514   if (tree_view->priv->scroll_to_column)
6515     {
6516       tree_view->priv->scroll_to_column = NULL;
6517     }
6518   if (need_redraw)
6519     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6520 }
6521
6522 static void
6523 initialize_fixed_height_mode (GtkTreeView *tree_view)
6524 {
6525   if (!tree_view->priv->tree)
6526     return;
6527
6528   if (tree_view->priv->fixed_height < 0)
6529     {
6530       GtkTreeIter iter;
6531       GtkTreePath *path;
6532
6533       GtkRBTree *tree = NULL;
6534       GtkRBNode *node = NULL;
6535
6536       tree = tree_view->priv->tree;
6537       node = tree->root;
6538
6539       path = _gtk_tree_view_find_path (tree_view, tree, node);
6540       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6541
6542       validate_row (tree_view, tree, node, &iter, path);
6543
6544       gtk_tree_path_free (path);
6545
6546       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6547     }
6548
6549    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6550                                  tree_view->priv->fixed_height, TRUE);
6551 }
6552
6553 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6554  * the left-most uninvalidated node.  We then try walking right, validating
6555  * nodes.  Once we find a valid node, we repeat the previous process of finding
6556  * the first invalid node.
6557  */
6558
6559 static gboolean
6560 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6561 {
6562   GtkRBTree *tree = NULL;
6563   GtkRBNode *node = NULL;
6564   gboolean validated_area = FALSE;
6565   gint retval = TRUE;
6566   GtkTreePath *path = NULL;
6567   GtkTreeIter iter;
6568   GTimer *timer;
6569   gint i = 0;
6570
6571   gint y = -1;
6572   gint prev_height = -1;
6573   gboolean fixed_height = TRUE;
6574
6575   g_assert (tree_view);
6576
6577   if (tree_view->priv->tree == NULL)
6578       return FALSE;
6579
6580   if (tree_view->priv->fixed_height_mode)
6581     {
6582       if (tree_view->priv->fixed_height < 0)
6583         initialize_fixed_height_mode (tree_view);
6584
6585       return FALSE;
6586     }
6587
6588   timer = g_timer_new ();
6589   g_timer_start (timer);
6590
6591   do
6592     {
6593       gboolean changed = FALSE;
6594
6595       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6596         {
6597           retval = FALSE;
6598           goto done;
6599         }
6600
6601       if (path != NULL)
6602         {
6603           node = _gtk_rbtree_next (tree, node);
6604           if (node != NULL)
6605             {
6606               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6607               gtk_tree_path_next (path);
6608             }
6609           else
6610             {
6611               gtk_tree_path_free (path);
6612               path = NULL;
6613             }
6614         }
6615
6616       if (path == NULL)
6617         {
6618           tree = tree_view->priv->tree;
6619           node = tree_view->priv->tree->root;
6620
6621           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6622
6623           do
6624             {
6625               if (node->left != tree->nil &&
6626                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6627                 {
6628                   node = node->left;
6629                 }
6630               else if (node->right != tree->nil &&
6631                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6632                 {
6633                   node = node->right;
6634                 }
6635               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6636                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6637                 {
6638                   break;
6639                 }
6640               else if (node->children != NULL)
6641                 {
6642                   tree = node->children;
6643                   node = tree->root;
6644                 }
6645               else
6646                 /* RBTree corruption!  All bad */
6647                 g_assert_not_reached ();
6648             }
6649           while (TRUE);
6650           path = _gtk_tree_view_find_path (tree_view, tree, node);
6651           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6652         }
6653
6654       changed = validate_row (tree_view, tree, node, &iter, path);
6655       validated_area = changed || validated_area;
6656
6657       if (changed)
6658         {
6659           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6660
6661           if (y == -1 || y > offset)
6662             y = offset;
6663         }
6664
6665       if (!tree_view->priv->fixed_height_check)
6666         {
6667           gint height;
6668
6669           height = gtk_tree_view_get_row_height (tree_view, node);
6670           if (prev_height < 0)
6671             prev_height = height;
6672           else if (prev_height != height)
6673             fixed_height = FALSE;
6674         }
6675
6676       i++;
6677     }
6678   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6679
6680   if (!tree_view->priv->fixed_height_check)
6681    {
6682      if (fixed_height)
6683        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6684
6685      tree_view->priv->fixed_height_check = 1;
6686    }
6687
6688  done:
6689   if (validated_area)
6690     {
6691       GtkRequisition requisition;
6692
6693       /* We temporarily guess a size, under the assumption that it will be the
6694        * same when we get our next size_allocate.  If we don't do this, we'll be
6695        * in an inconsistent state when we call top_row_to_dy. */
6696
6697       /* FIXME: This is called from size_request, for some reason it is not infinitely
6698        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6699        * not allowed (from inside ->get_preferred_width/height() implementations, one
6700        * should call the vfuncs directly). However what is desired here is the full
6701        * size including any margins and limited by any alignment (i.e. after
6702        * GtkWidget:adjust_size_request() is called).
6703        *
6704        * Currently bypassing this but the real solution is to not update the scroll adjustments
6705        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6706        */
6707       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6708
6709       /* If rows above the current position have changed height, this has
6710        * affected the current view and thus needs a redraw.
6711        */
6712       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6713         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6714
6715       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6716                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6717       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6718                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6719
6720       if (queue_resize)
6721         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6722     }
6723
6724   if (path) gtk_tree_path_free (path);
6725   g_timer_destroy (timer);
6726
6727   return retval;
6728 }
6729
6730 static gboolean
6731 validate_rows (GtkTreeView *tree_view)
6732 {
6733   gboolean retval;
6734
6735   retval = do_validate_rows (tree_view, TRUE);
6736
6737   if (! retval && tree_view->priv->validate_rows_timer)
6738     {
6739       g_source_remove (tree_view->priv->validate_rows_timer);
6740       tree_view->priv->validate_rows_timer = 0;
6741     }
6742
6743   return retval;
6744 }
6745
6746 static gboolean
6747 validate_rows_handler (GtkTreeView *tree_view)
6748 {
6749   gboolean retval;
6750
6751   retval = do_validate_rows (tree_view, TRUE);
6752   if (! retval && tree_view->priv->validate_rows_timer)
6753     {
6754       g_source_remove (tree_view->priv->validate_rows_timer);
6755       tree_view->priv->validate_rows_timer = 0;
6756     }
6757
6758   return retval;
6759 }
6760
6761 static gboolean
6762 do_presize_handler (GtkTreeView *tree_view)
6763 {
6764   if (tree_view->priv->mark_rows_col_dirty)
6765     {
6766       if (tree_view->priv->tree)
6767         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6768       tree_view->priv->mark_rows_col_dirty = FALSE;
6769     }
6770   validate_visible_area (tree_view);
6771   tree_view->priv->presize_handler_timer = 0;
6772
6773   if (tree_view->priv->fixed_height_mode)
6774     {
6775       GtkRequisition requisition;
6776
6777       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6778                                      &requisition, NULL);
6779
6780       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6781                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6782       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6783                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6784       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6785     }
6786
6787   return FALSE;
6788 }
6789
6790 static gboolean
6791 presize_handler_callback (gpointer data)
6792 {
6793   do_presize_handler (GTK_TREE_VIEW (data));
6794
6795   return FALSE;
6796 }
6797
6798 static void
6799 install_presize_handler (GtkTreeView *tree_view)
6800 {
6801   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6802     return;
6803
6804   if (! tree_view->priv->presize_handler_timer)
6805     {
6806       tree_view->priv->presize_handler_timer =
6807         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6808     }
6809   if (! tree_view->priv->validate_rows_timer)
6810     {
6811       tree_view->priv->validate_rows_timer =
6812         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6813     }
6814 }
6815
6816 static void
6817 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6818 {
6819   /* Prior to drawing, we make sure the visible area is validated. */
6820   if (tree_view->priv->presize_handler_timer)
6821     {
6822       g_source_remove (tree_view->priv->presize_handler_timer);
6823       tree_view->priv->presize_handler_timer = 0;
6824
6825       do_presize_handler (tree_view);
6826     }
6827
6828   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6829 }
6830
6831 static gboolean
6832 scroll_sync_handler (GtkTreeView *tree_view)
6833 {
6834   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6835     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6836   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6837     gtk_tree_view_top_row_to_dy (tree_view);
6838   else
6839     gtk_tree_view_dy_to_top_row (tree_view);
6840
6841   tree_view->priv->scroll_sync_timer = 0;
6842
6843   return FALSE;
6844 }
6845
6846 static void
6847 install_scroll_sync_handler (GtkTreeView *tree_view)
6848 {
6849   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6850     return;
6851
6852   if (!tree_view->priv->scroll_sync_timer)
6853     {
6854       tree_view->priv->scroll_sync_timer =
6855         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6856     }
6857 }
6858
6859 static void
6860 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6861                            GtkTreePath *path,
6862                            gint         offset)
6863 {
6864   gtk_tree_row_reference_free (tree_view->priv->top_row);
6865
6866   if (!path)
6867     {
6868       tree_view->priv->top_row = NULL;
6869       tree_view->priv->top_row_dy = 0;
6870     }
6871   else
6872     {
6873       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6874       tree_view->priv->top_row_dy = offset;
6875     }
6876 }
6877
6878 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6879  * it's set to be NULL, and top_row_dy is 0;
6880  */
6881 static void
6882 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6883 {
6884   gint offset;
6885   GtkTreePath *path;
6886   GtkRBTree *tree;
6887   GtkRBNode *node;
6888
6889   if (tree_view->priv->tree == NULL)
6890     {
6891       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6892     }
6893   else
6894     {
6895       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6896                                         tree_view->priv->dy,
6897                                         &tree, &node);
6898
6899       if (tree == NULL)
6900         {
6901           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6902         }
6903       else
6904         {
6905           path = _gtk_tree_view_find_path (tree_view, tree, node);
6906           gtk_tree_view_set_top_row (tree_view, path, offset);
6907           gtk_tree_path_free (path);
6908         }
6909     }
6910 }
6911
6912 static void
6913 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6914 {
6915   GtkTreePath *path;
6916   GtkRBTree *tree;
6917   GtkRBNode *node;
6918   int new_dy;
6919
6920   /* Avoid recursive calls */
6921   if (tree_view->priv->in_top_row_to_dy)
6922     return;
6923
6924   if (tree_view->priv->top_row)
6925     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6926   else
6927     path = NULL;
6928
6929   if (!path)
6930     tree = NULL;
6931   else
6932     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6933
6934   if (path)
6935     gtk_tree_path_free (path);
6936
6937   if (tree == NULL)
6938     {
6939       /* keep dy and set new toprow */
6940       gtk_tree_row_reference_free (tree_view->priv->top_row);
6941       tree_view->priv->top_row = NULL;
6942       tree_view->priv->top_row_dy = 0;
6943       /* DO NOT install the idle handler */
6944       gtk_tree_view_dy_to_top_row (tree_view);
6945       return;
6946     }
6947
6948   if (gtk_tree_view_get_row_height (tree_view, node)
6949       < tree_view->priv->top_row_dy)
6950     {
6951       /* new top row -- do NOT install the idle handler */
6952       gtk_tree_view_dy_to_top_row (tree_view);
6953       return;
6954     }
6955
6956   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6957   new_dy += tree_view->priv->top_row_dy;
6958
6959   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6960     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6961
6962   new_dy = MAX (0, new_dy);
6963
6964   tree_view->priv->in_top_row_to_dy = TRUE;
6965   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6966   tree_view->priv->in_top_row_to_dy = FALSE;
6967 }
6968
6969
6970 void
6971 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6972                                             gboolean     install_handler)
6973 {
6974   tree_view->priv->mark_rows_col_dirty = TRUE;
6975
6976   if (install_handler)
6977     install_presize_handler (tree_view);
6978 }
6979
6980 /*
6981  * This function works synchronously (due to the while (validate_rows...)
6982  * loop).
6983  *
6984  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6985  * here. You now need to check that yourself.
6986  */
6987 void
6988 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6989                                 GtkTreeViewColumn *column)
6990 {
6991   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6992   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6993
6994   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6995
6996   do_presize_handler (tree_view);
6997   while (validate_rows (tree_view));
6998
6999   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7000 }
7001
7002 /* Drag-and-drop */
7003
7004 static void
7005 set_source_row (GdkDragContext *context,
7006                 GtkTreeModel   *model,
7007                 GtkTreePath    *source_row)
7008 {
7009   g_object_set_data_full (G_OBJECT (context),
7010                           I_("gtk-tree-view-source-row"),
7011                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7012                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7013 }
7014
7015 static GtkTreePath*
7016 get_source_row (GdkDragContext *context)
7017 {
7018   GtkTreeRowReference *ref =
7019     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7020
7021   if (ref)
7022     return gtk_tree_row_reference_get_path (ref);
7023   else
7024     return NULL;
7025 }
7026
7027 typedef struct
7028 {
7029   GtkTreeRowReference *dest_row;
7030   guint                path_down_mode   : 1;
7031   guint                empty_view_drop  : 1;
7032   guint                drop_append_mode : 1;
7033 }
7034 DestRow;
7035
7036 static void
7037 dest_row_free (gpointer data)
7038 {
7039   DestRow *dr = (DestRow *)data;
7040
7041   gtk_tree_row_reference_free (dr->dest_row);
7042   g_slice_free (DestRow, dr);
7043 }
7044
7045 static void
7046 set_dest_row (GdkDragContext *context,
7047               GtkTreeModel   *model,
7048               GtkTreePath    *dest_row,
7049               gboolean        path_down_mode,
7050               gboolean        empty_view_drop,
7051               gboolean        drop_append_mode)
7052 {
7053   DestRow *dr;
7054
7055   if (!dest_row)
7056     {
7057       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7058                               NULL, NULL);
7059       return;
7060     }
7061
7062   dr = g_slice_new (DestRow);
7063
7064   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7065   dr->path_down_mode = path_down_mode != FALSE;
7066   dr->empty_view_drop = empty_view_drop != FALSE;
7067   dr->drop_append_mode = drop_append_mode != FALSE;
7068
7069   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7070                           dr, (GDestroyNotify) dest_row_free);
7071 }
7072
7073 static GtkTreePath*
7074 get_dest_row (GdkDragContext *context,
7075               gboolean       *path_down_mode)
7076 {
7077   DestRow *dr =
7078     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7079
7080   if (dr)
7081     {
7082       GtkTreePath *path = NULL;
7083
7084       if (path_down_mode)
7085         *path_down_mode = dr->path_down_mode;
7086
7087       if (dr->dest_row)
7088         path = gtk_tree_row_reference_get_path (dr->dest_row);
7089       else if (dr->empty_view_drop)
7090         path = gtk_tree_path_new_from_indices (0, -1);
7091       else
7092         path = NULL;
7093
7094       if (path && dr->drop_append_mode)
7095         gtk_tree_path_next (path);
7096
7097       return path;
7098     }
7099   else
7100     return NULL;
7101 }
7102
7103 /* Get/set whether drag_motion requested the drag data and
7104  * drag_data_received should thus not actually insert the data,
7105  * since the data doesn't result from a drop.
7106  */
7107 static void
7108 set_status_pending (GdkDragContext *context,
7109                     GdkDragAction   suggested_action)
7110 {
7111   g_object_set_data (G_OBJECT (context),
7112                      I_("gtk-tree-view-status-pending"),
7113                      GINT_TO_POINTER (suggested_action));
7114 }
7115
7116 static GdkDragAction
7117 get_status_pending (GdkDragContext *context)
7118 {
7119   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7120                                              "gtk-tree-view-status-pending"));
7121 }
7122
7123 static TreeViewDragInfo*
7124 get_info (GtkTreeView *tree_view)
7125 {
7126   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7127 }
7128
7129 static void
7130 destroy_info (TreeViewDragInfo *di)
7131 {
7132   g_slice_free (TreeViewDragInfo, di);
7133 }
7134
7135 static TreeViewDragInfo*
7136 ensure_info (GtkTreeView *tree_view)
7137 {
7138   TreeViewDragInfo *di;
7139
7140   di = get_info (tree_view);
7141
7142   if (di == NULL)
7143     {
7144       di = g_slice_new0 (TreeViewDragInfo);
7145
7146       g_object_set_data_full (G_OBJECT (tree_view),
7147                               I_("gtk-tree-view-drag-info"),
7148                               di,
7149                               (GDestroyNotify) destroy_info);
7150     }
7151
7152   return di;
7153 }
7154
7155 static void
7156 remove_info (GtkTreeView *tree_view)
7157 {
7158   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7159 }
7160
7161 #if 0
7162 static gint
7163 drag_scan_timeout (gpointer data)
7164 {
7165   GtkTreeView *tree_view;
7166   gint x, y;
7167   GdkModifierType state;
7168   GtkTreePath *path = NULL;
7169   GtkTreeViewColumn *column = NULL;
7170   GdkRectangle visible_rect;
7171
7172   GDK_THREADS_ENTER ();
7173
7174   tree_view = GTK_TREE_VIEW (data);
7175
7176   gdk_window_get_pointer (tree_view->priv->bin_window,
7177                           &x, &y, &state);
7178
7179   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7180
7181   /* See if we are near the edge. */
7182   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7183       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7184       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7185       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7186     {
7187       gtk_tree_view_get_path_at_pos (tree_view,
7188                                      tree_view->priv->bin_window,
7189                                      x, y,
7190                                      &path,
7191                                      &column,
7192                                      NULL,
7193                                      NULL);
7194
7195       if (path != NULL)
7196         {
7197           gtk_tree_view_scroll_to_cell (tree_view,
7198                                         path,
7199                                         column,
7200                                         TRUE,
7201                                         0.5, 0.5);
7202
7203           gtk_tree_path_free (path);
7204         }
7205     }
7206
7207   GDK_THREADS_LEAVE ();
7208
7209   return TRUE;
7210 }
7211 #endif /* 0 */
7212
7213 static void
7214 add_scroll_timeout (GtkTreeView *tree_view)
7215 {
7216   if (tree_view->priv->scroll_timeout == 0)
7217     {
7218       tree_view->priv->scroll_timeout =
7219         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7220     }
7221 }
7222
7223 static void
7224 remove_scroll_timeout (GtkTreeView *tree_view)
7225 {
7226   if (tree_view->priv->scroll_timeout != 0)
7227     {
7228       g_source_remove (tree_view->priv->scroll_timeout);
7229       tree_view->priv->scroll_timeout = 0;
7230     }
7231 }
7232
7233 static gboolean
7234 check_model_dnd (GtkTreeModel *model,
7235                  GType         required_iface,
7236                  const gchar  *signal)
7237 {
7238   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7239     {
7240       g_warning ("You must override the default '%s' handler "
7241                  "on GtkTreeView when using models that don't support "
7242                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7243                  "is to connect to '%s' and call "
7244                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7245                  "the default handler from running. Look at the source code "
7246                  "for the default handler in gtktreeview.c to get an idea what "
7247                  "your handler should do. (gtktreeview.c is in the GTK source "
7248                  "code.) If you're using GTK from a language other than C, "
7249                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7250                  signal, g_type_name (required_iface), signal);
7251       return FALSE;
7252     }
7253   else
7254     return TRUE;
7255 }
7256
7257 static void
7258 remove_open_timeout (GtkTreeView *tree_view)
7259 {
7260   if (tree_view->priv->open_dest_timeout != 0)
7261     {
7262       g_source_remove (tree_view->priv->open_dest_timeout);
7263       tree_view->priv->open_dest_timeout = 0;
7264     }
7265 }
7266
7267
7268 static gint
7269 open_row_timeout (gpointer data)
7270 {
7271   GtkTreeView *tree_view = data;
7272   GtkTreePath *dest_path = NULL;
7273   GtkTreeViewDropPosition pos;
7274   gboolean result = FALSE;
7275
7276   gtk_tree_view_get_drag_dest_row (tree_view,
7277                                    &dest_path,
7278                                    &pos);
7279
7280   if (dest_path &&
7281       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7282        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7283     {
7284       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7285       tree_view->priv->open_dest_timeout = 0;
7286
7287       gtk_tree_path_free (dest_path);
7288     }
7289   else
7290     {
7291       if (dest_path)
7292         gtk_tree_path_free (dest_path);
7293
7294       result = TRUE;
7295     }
7296
7297   return result;
7298 }
7299
7300 static gboolean
7301 scroll_row_timeout (gpointer data)
7302 {
7303   GtkTreeView *tree_view = data;
7304
7305   gtk_tree_view_vertical_autoscroll (tree_view);
7306
7307   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7308     gtk_tree_view_update_rubber_band (tree_view);
7309
7310   return TRUE;
7311 }
7312
7313 /* Returns TRUE if event should not be propagated to parent widgets */
7314 static gboolean
7315 set_destination_row (GtkTreeView    *tree_view,
7316                      GdkDragContext *context,
7317                      /* coordinates relative to the widget */
7318                      gint            x,
7319                      gint            y,
7320                      GdkDragAction  *suggested_action,
7321                      GdkAtom        *target)
7322 {
7323   GtkTreePath *path = NULL;
7324   GtkTreeViewDropPosition pos;
7325   GtkTreeViewDropPosition old_pos;
7326   TreeViewDragInfo *di;
7327   GtkWidget *widget;
7328   GtkTreePath *old_dest_path = NULL;
7329   gboolean can_drop = FALSE;
7330
7331   *suggested_action = 0;
7332   *target = GDK_NONE;
7333
7334   widget = GTK_WIDGET (tree_view);
7335
7336   di = get_info (tree_view);
7337
7338   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7339     {
7340       /* someone unset us as a drag dest, note that if
7341        * we return FALSE drag_leave isn't called
7342        */
7343
7344       gtk_tree_view_set_drag_dest_row (tree_view,
7345                                        NULL,
7346                                        GTK_TREE_VIEW_DROP_BEFORE);
7347
7348       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7349       remove_open_timeout (GTK_TREE_VIEW (widget));
7350
7351       return FALSE; /* no longer a drop site */
7352     }
7353
7354   *target = gtk_drag_dest_find_target (widget, context,
7355                                        gtk_drag_dest_get_target_list (widget));
7356   if (*target == GDK_NONE)
7357     {
7358       return FALSE;
7359     }
7360
7361   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7362                                           x, y,
7363                                           &path,
7364                                           &pos))
7365     {
7366       gint n_children;
7367       GtkTreeModel *model;
7368
7369       remove_open_timeout (tree_view);
7370
7371       /* the row got dropped on empty space, let's setup a special case
7372        */
7373
7374       if (path)
7375         gtk_tree_path_free (path);
7376
7377       model = gtk_tree_view_get_model (tree_view);
7378
7379       n_children = gtk_tree_model_iter_n_children (model, NULL);
7380       if (n_children)
7381         {
7382           pos = GTK_TREE_VIEW_DROP_AFTER;
7383           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7384         }
7385       else
7386         {
7387           pos = GTK_TREE_VIEW_DROP_BEFORE;
7388           path = gtk_tree_path_new_from_indices (0, -1);
7389         }
7390
7391       can_drop = TRUE;
7392
7393       goto out;
7394     }
7395
7396   g_assert (path);
7397
7398   /* If we left the current row's "open" zone, unset the timeout for
7399    * opening the row
7400    */
7401   gtk_tree_view_get_drag_dest_row (tree_view,
7402                                    &old_dest_path,
7403                                    &old_pos);
7404
7405   if (old_dest_path &&
7406       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7407        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7408          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7409     remove_open_timeout (tree_view);
7410
7411   if (old_dest_path)
7412     gtk_tree_path_free (old_dest_path);
7413
7414   if (TRUE /* FIXME if the location droppable predicate */)
7415     {
7416       can_drop = TRUE;
7417     }
7418
7419 out:
7420   if (can_drop)
7421     {
7422       GtkWidget *source_widget;
7423
7424       *suggested_action = gdk_drag_context_get_suggested_action (context);
7425       source_widget = gtk_drag_get_source_widget (context);
7426
7427       if (source_widget == widget)
7428         {
7429           /* Default to MOVE, unless the user has
7430            * pressed ctrl or shift to affect available actions
7431            */
7432           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7433             *suggested_action = GDK_ACTION_MOVE;
7434         }
7435
7436       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7437                                        path, pos);
7438     }
7439   else
7440     {
7441       /* can't drop here */
7442       remove_open_timeout (tree_view);
7443
7444       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7445                                        NULL,
7446                                        GTK_TREE_VIEW_DROP_BEFORE);
7447     }
7448
7449   if (path)
7450     gtk_tree_path_free (path);
7451
7452   return TRUE;
7453 }
7454
7455 static GtkTreePath*
7456 get_logical_dest_row (GtkTreeView *tree_view,
7457                       gboolean    *path_down_mode,
7458                       gboolean    *drop_append_mode)
7459 {
7460   /* adjust path to point to the row the drop goes in front of */
7461   GtkTreePath *path = NULL;
7462   GtkTreeViewDropPosition pos;
7463
7464   g_return_val_if_fail (path_down_mode != NULL, NULL);
7465   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7466
7467   *path_down_mode = FALSE;
7468   *drop_append_mode = 0;
7469
7470   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7471
7472   if (path == NULL)
7473     return NULL;
7474
7475   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7476     ; /* do nothing */
7477   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7478            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7479     *path_down_mode = TRUE;
7480   else
7481     {
7482       GtkTreeIter iter;
7483       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7484
7485       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7486
7487       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7488           !gtk_tree_model_iter_next (model, &iter))
7489         *drop_append_mode = 1;
7490       else
7491         {
7492           *drop_append_mode = 0;
7493           gtk_tree_path_next (path);
7494         }
7495     }
7496
7497   return path;
7498 }
7499
7500 static gboolean
7501 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7502                                         GdkEventMotion   *event)
7503 {
7504   GtkWidget *widget = GTK_WIDGET (tree_view);
7505   GdkDragContext *context;
7506   TreeViewDragInfo *di;
7507   GtkTreePath *path = NULL;
7508   gint button;
7509   gint cell_x, cell_y;
7510   GtkTreeModel *model;
7511   gboolean retval = FALSE;
7512
7513   di = get_info (tree_view);
7514
7515   if (di == NULL || !di->source_set)
7516     goto out;
7517
7518   if (tree_view->priv->pressed_button < 0)
7519     goto out;
7520
7521   if (!gtk_drag_check_threshold (widget,
7522                                  tree_view->priv->press_start_x,
7523                                  tree_view->priv->press_start_y,
7524                                  event->x, event->y))
7525     goto out;
7526
7527   model = gtk_tree_view_get_model (tree_view);
7528
7529   if (model == NULL)
7530     goto out;
7531
7532   button = tree_view->priv->pressed_button;
7533   tree_view->priv->pressed_button = -1;
7534
7535   gtk_tree_view_get_path_at_pos (tree_view,
7536                                  tree_view->priv->press_start_x,
7537                                  tree_view->priv->press_start_y,
7538                                  &path,
7539                                  NULL,
7540                                  &cell_x,
7541                                  &cell_y);
7542
7543   if (path == NULL)
7544     goto out;
7545
7546   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7547       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7548                                            path))
7549     goto out;
7550
7551   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7552     goto out;
7553
7554   /* Now we can begin the drag */
7555
7556   retval = TRUE;
7557
7558   context = gtk_drag_begin (widget,
7559                             gtk_drag_source_get_target_list (widget),
7560                             di->source_actions,
7561                             button,
7562                             (GdkEvent*)event);
7563
7564   set_source_row (context, model, path);
7565
7566  out:
7567   if (path)
7568     gtk_tree_path_free (path);
7569
7570   return retval;
7571 }
7572
7573
7574 static void
7575 gtk_tree_view_drag_begin (GtkWidget      *widget,
7576                           GdkDragContext *context)
7577 {
7578   GtkTreeView *tree_view;
7579   GtkTreePath *path = NULL;
7580   gint cell_x, cell_y;
7581   cairo_surface_t *row_pix;
7582   TreeViewDragInfo *di;
7583
7584   tree_view = GTK_TREE_VIEW (widget);
7585
7586   /* if the user uses a custom DND source impl, we don't set the icon here */
7587   di = get_info (tree_view);
7588
7589   if (di == NULL || !di->source_set)
7590     return;
7591
7592   gtk_tree_view_get_path_at_pos (tree_view,
7593                                  tree_view->priv->press_start_x,
7594                                  tree_view->priv->press_start_y,
7595                                  &path,
7596                                  NULL,
7597                                  &cell_x,
7598                                  &cell_y);
7599
7600   g_return_if_fail (path != NULL);
7601
7602   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7603                                                 path);
7604   cairo_surface_set_device_offset (row_pix,
7605                                    /* the + 1 is for the black border in the icon */
7606                                    - (tree_view->priv->press_start_x + 1),
7607                                    - (cell_y + 1));
7608
7609   gtk_drag_set_icon_surface (context, row_pix);
7610
7611   cairo_surface_destroy (row_pix);
7612   gtk_tree_path_free (path);
7613 }
7614
7615 static void
7616 gtk_tree_view_drag_end (GtkWidget      *widget,
7617                         GdkDragContext *context)
7618 {
7619   /* do nothing */
7620 }
7621
7622 /* Default signal implementations for the drag signals */
7623 static void
7624 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7625                              GdkDragContext   *context,
7626                              GtkSelectionData *selection_data,
7627                              guint             info,
7628                              guint             time)
7629 {
7630   GtkTreeView *tree_view;
7631   GtkTreeModel *model;
7632   TreeViewDragInfo *di;
7633   GtkTreePath *source_row;
7634
7635   tree_view = GTK_TREE_VIEW (widget);
7636
7637   model = gtk_tree_view_get_model (tree_view);
7638
7639   if (model == NULL)
7640     return;
7641
7642   di = get_info (GTK_TREE_VIEW (widget));
7643
7644   if (di == NULL)
7645     return;
7646
7647   source_row = get_source_row (context);
7648
7649   if (source_row == NULL)
7650     return;
7651
7652   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7653    * any model; for DragSource models there are some other targets
7654    * we also support.
7655    */
7656
7657   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7658       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7659                                           source_row,
7660                                           selection_data))
7661     goto done;
7662
7663   /* If drag_data_get does nothing, try providing row data. */
7664   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7665     {
7666       gtk_tree_set_row_drag_data (selection_data,
7667                                   model,
7668                                   source_row);
7669     }
7670
7671  done:
7672   gtk_tree_path_free (source_row);
7673 }
7674
7675
7676 static void
7677 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7678                                 GdkDragContext *context)
7679 {
7680   TreeViewDragInfo *di;
7681   GtkTreeModel *model;
7682   GtkTreeView *tree_view;
7683   GtkTreePath *source_row;
7684
7685   tree_view = GTK_TREE_VIEW (widget);
7686   model = gtk_tree_view_get_model (tree_view);
7687
7688   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7689     return;
7690
7691   di = get_info (tree_view);
7692
7693   if (di == NULL)
7694     return;
7695
7696   source_row = get_source_row (context);
7697
7698   if (source_row == NULL)
7699     return;
7700
7701   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7702                                          source_row);
7703
7704   gtk_tree_path_free (source_row);
7705
7706   set_source_row (context, NULL, NULL);
7707 }
7708
7709 static void
7710 gtk_tree_view_drag_leave (GtkWidget      *widget,
7711                           GdkDragContext *context,
7712                           guint             time)
7713 {
7714   /* unset any highlight row */
7715   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7716                                    NULL,
7717                                    GTK_TREE_VIEW_DROP_BEFORE);
7718
7719   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7720   remove_open_timeout (GTK_TREE_VIEW (widget));
7721 }
7722
7723
7724 static gboolean
7725 gtk_tree_view_drag_motion (GtkWidget        *widget,
7726                            GdkDragContext   *context,
7727                            /* coordinates relative to the widget */
7728                            gint              x,
7729                            gint              y,
7730                            guint             time)
7731 {
7732   gboolean empty;
7733   GtkTreePath *path = NULL;
7734   GtkTreeViewDropPosition pos;
7735   GtkTreeView *tree_view;
7736   GdkDragAction suggested_action = 0;
7737   GdkAtom target;
7738
7739   tree_view = GTK_TREE_VIEW (widget);
7740
7741   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7742     return FALSE;
7743
7744   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7745
7746   /* we only know this *after* set_desination_row */
7747   empty = tree_view->priv->empty_view_drop;
7748
7749   if (path == NULL && !empty)
7750     {
7751       /* Can't drop here. */
7752       gdk_drag_status (context, 0, time);
7753     }
7754   else
7755     {
7756       if (tree_view->priv->open_dest_timeout == 0 &&
7757           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7758            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7759         {
7760           tree_view->priv->open_dest_timeout =
7761             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7762         }
7763       else
7764         {
7765           add_scroll_timeout (tree_view);
7766         }
7767
7768       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7769         {
7770           /* Request data so we can use the source row when
7771            * determining whether to accept the drop
7772            */
7773           set_status_pending (context, suggested_action);
7774           gtk_drag_get_data (widget, context, target, time);
7775         }
7776       else
7777         {
7778           set_status_pending (context, 0);
7779           gdk_drag_status (context, suggested_action, time);
7780         }
7781     }
7782
7783   if (path)
7784     gtk_tree_path_free (path);
7785
7786   return TRUE;
7787 }
7788
7789
7790 static gboolean
7791 gtk_tree_view_drag_drop (GtkWidget        *widget,
7792                          GdkDragContext   *context,
7793                          /* coordinates relative to the widget */
7794                          gint              x,
7795                          gint              y,
7796                          guint             time)
7797 {
7798   GtkTreeView *tree_view;
7799   GtkTreePath *path;
7800   GdkDragAction suggested_action = 0;
7801   GdkAtom target = GDK_NONE;
7802   TreeViewDragInfo *di;
7803   GtkTreeModel *model;
7804   gboolean path_down_mode;
7805   gboolean drop_append_mode;
7806
7807   tree_view = GTK_TREE_VIEW (widget);
7808
7809   model = gtk_tree_view_get_model (tree_view);
7810
7811   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7812   remove_open_timeout (GTK_TREE_VIEW (widget));
7813
7814   di = get_info (tree_view);
7815
7816   if (di == NULL)
7817     return FALSE;
7818
7819   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7820     return FALSE;
7821
7822   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7823     return FALSE;
7824
7825   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7826
7827   if (target != GDK_NONE && path != NULL)
7828     {
7829       /* in case a motion had requested drag data, change things so we
7830        * treat drag data receives as a drop.
7831        */
7832       set_status_pending (context, 0);
7833       set_dest_row (context, model, path,
7834                     path_down_mode, tree_view->priv->empty_view_drop,
7835                     drop_append_mode);
7836     }
7837
7838   if (path)
7839     gtk_tree_path_free (path);
7840
7841   /* Unset this thing */
7842   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7843                                    NULL,
7844                                    GTK_TREE_VIEW_DROP_BEFORE);
7845
7846   if (target != GDK_NONE)
7847     {
7848       gtk_drag_get_data (widget, context, target, time);
7849       return TRUE;
7850     }
7851   else
7852     return FALSE;
7853 }
7854
7855 static void
7856 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7857                                   GdkDragContext   *context,
7858                                   /* coordinates relative to the widget */
7859                                   gint              x,
7860                                   gint              y,
7861                                   GtkSelectionData *selection_data,
7862                                   guint             info,
7863                                   guint             time)
7864 {
7865   GtkTreePath *path;
7866   TreeViewDragInfo *di;
7867   gboolean accepted = FALSE;
7868   GtkTreeModel *model;
7869   GtkTreeView *tree_view;
7870   GtkTreePath *dest_row;
7871   GdkDragAction suggested_action;
7872   gboolean path_down_mode;
7873   gboolean drop_append_mode;
7874
7875   tree_view = GTK_TREE_VIEW (widget);
7876
7877   model = gtk_tree_view_get_model (tree_view);
7878
7879   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7880     return;
7881
7882   di = get_info (tree_view);
7883
7884   if (di == NULL)
7885     return;
7886
7887   suggested_action = get_status_pending (context);
7888
7889   if (suggested_action)
7890     {
7891       /* We are getting this data due to a request in drag_motion,
7892        * rather than due to a request in drag_drop, so we are just
7893        * supposed to call drag_status, not actually paste in the
7894        * data.
7895        */
7896       path = get_logical_dest_row (tree_view, &path_down_mode,
7897                                    &drop_append_mode);
7898
7899       if (path == NULL)
7900         suggested_action = 0;
7901       else if (path_down_mode)
7902         gtk_tree_path_down (path);
7903
7904       if (suggested_action)
7905         {
7906           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7907                                                      path,
7908                                                      selection_data))
7909             {
7910               if (path_down_mode)
7911                 {
7912                   path_down_mode = FALSE;
7913                   gtk_tree_path_up (path);
7914
7915                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7916                                                              path,
7917                                                              selection_data))
7918                     suggested_action = 0;
7919                 }
7920               else
7921                 suggested_action = 0;
7922             }
7923         }
7924
7925       gdk_drag_status (context, suggested_action, time);
7926
7927       if (path)
7928         gtk_tree_path_free (path);
7929
7930       /* If you can't drop, remove user drop indicator until the next motion */
7931       if (suggested_action == 0)
7932         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7933                                          NULL,
7934                                          GTK_TREE_VIEW_DROP_BEFORE);
7935
7936       return;
7937     }
7938
7939   dest_row = get_dest_row (context, &path_down_mode);
7940
7941   if (dest_row == NULL)
7942     return;
7943
7944   if (gtk_selection_data_get_length (selection_data) >= 0)
7945     {
7946       if (path_down_mode)
7947         {
7948           gtk_tree_path_down (dest_row);
7949           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7950                                                      dest_row, selection_data))
7951             gtk_tree_path_up (dest_row);
7952         }
7953     }
7954
7955   if (gtk_selection_data_get_length (selection_data) >= 0)
7956     {
7957       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7958                                                  dest_row,
7959                                                  selection_data))
7960         accepted = TRUE;
7961     }
7962
7963   gtk_drag_finish (context,
7964                    accepted,
7965                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7966                    time);
7967
7968   if (gtk_tree_path_get_depth (dest_row) == 1
7969       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7970     {
7971       /* special special case drag to "0", scroll to first item */
7972       if (!tree_view->priv->scroll_to_path)
7973         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7974     }
7975
7976   gtk_tree_path_free (dest_row);
7977
7978   /* drop dest_row */
7979   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7980 }
7981
7982
7983
7984 /* GtkContainer Methods
7985  */
7986
7987
7988 static void
7989 gtk_tree_view_remove (GtkContainer *container,
7990                       GtkWidget    *widget)
7991 {
7992   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7993   GtkTreeViewChild *child = NULL;
7994   GList *tmp_list;
7995
7996   tmp_list = tree_view->priv->children;
7997   while (tmp_list)
7998     {
7999       child = tmp_list->data;
8000       if (child->widget == widget)
8001         {
8002           gtk_widget_unparent (widget);
8003
8004           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8005           g_list_free_1 (tmp_list);
8006           g_slice_free (GtkTreeViewChild, child);
8007           return;
8008         }
8009
8010       tmp_list = tmp_list->next;
8011     }
8012
8013   tmp_list = tree_view->priv->columns;
8014
8015   while (tmp_list)
8016     {
8017       GtkTreeViewColumn *column;
8018       GtkWidget         *button;
8019
8020       column = tmp_list->data;
8021       button = gtk_tree_view_column_get_button (column);
8022
8023       if (button == widget)
8024         {
8025           gtk_widget_unparent (widget);
8026           return;
8027         }
8028       tmp_list = tmp_list->next;
8029     }
8030 }
8031
8032 static void
8033 gtk_tree_view_forall (GtkContainer *container,
8034                       gboolean      include_internals,
8035                       GtkCallback   callback,
8036                       gpointer      callback_data)
8037 {
8038   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8039   GtkTreeViewChild *child = NULL;
8040   GtkTreeViewColumn *column;
8041   GtkWidget *button;
8042   GList *tmp_list;
8043
8044   tmp_list = tree_view->priv->children;
8045   while (tmp_list)
8046     {
8047       child = tmp_list->data;
8048       tmp_list = tmp_list->next;
8049
8050       (* callback) (child->widget, callback_data);
8051     }
8052   if (include_internals == FALSE)
8053     return;
8054
8055   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8056     {
8057       column = tmp_list->data;
8058       button = gtk_tree_view_column_get_button (column);
8059
8060       if (button)
8061         (* callback) (button, callback_data);
8062     }
8063 }
8064
8065 /* Returns TRUE is any of the columns contains a cell that can-focus.
8066  * If this is not the case, a column-spanning focus rectangle will be
8067  * drawn.
8068  */
8069 static gboolean
8070 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8071 {
8072   GList *list;
8073
8074   for (list = tree_view->priv->columns; list; list = list->next)
8075     {
8076       GtkTreeViewColumn *column = list->data;
8077
8078       if (!gtk_tree_view_column_get_visible (column))
8079         continue;
8080       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8081         return TRUE;
8082     }
8083
8084   return FALSE;
8085 }
8086
8087 static void
8088 column_sizing_notify (GObject    *object,
8089                       GParamSpec *pspec,
8090                       gpointer    data)
8091 {
8092   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8093
8094   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8095     /* disable fixed height mode */
8096     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8097 }
8098
8099 /**
8100  * gtk_tree_view_set_fixed_height_mode:
8101  * @tree_view: a #GtkTreeView
8102  * @enable: %TRUE to enable fixed height mode
8103  *
8104  * Enables or disables the fixed height mode of @tree_view.
8105  * Fixed height mode speeds up #GtkTreeView by assuming that all
8106  * rows have the same height.
8107  * Only enable this option if all rows are the same height and all
8108  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8109  *
8110  * Since: 2.6
8111  **/
8112 void
8113 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8114                                      gboolean     enable)
8115 {
8116   GList *l;
8117
8118   enable = enable != FALSE;
8119
8120   if (enable == tree_view->priv->fixed_height_mode)
8121     return;
8122
8123   if (!enable)
8124     {
8125       tree_view->priv->fixed_height_mode = 0;
8126       tree_view->priv->fixed_height = -1;
8127
8128       /* force a revalidation */
8129       install_presize_handler (tree_view);
8130     }
8131   else
8132     {
8133       /* make sure all columns are of type FIXED */
8134       for (l = tree_view->priv->columns; l; l = l->next)
8135         {
8136           GtkTreeViewColumn *c = l->data;
8137
8138           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8139         }
8140
8141       /* yes, we really have to do this is in a separate loop */
8142       for (l = tree_view->priv->columns; l; l = l->next)
8143         g_signal_connect (l->data, "notify::sizing",
8144                           G_CALLBACK (column_sizing_notify), tree_view);
8145
8146       tree_view->priv->fixed_height_mode = 1;
8147       tree_view->priv->fixed_height = -1;
8148
8149       if (tree_view->priv->tree)
8150         initialize_fixed_height_mode (tree_view);
8151     }
8152
8153   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8154 }
8155
8156 /**
8157  * gtk_tree_view_get_fixed_height_mode:
8158  * @tree_view: a #GtkTreeView
8159  *
8160  * Returns whether fixed height mode is turned on for @tree_view.
8161  *
8162  * Return value: %TRUE if @tree_view is in fixed height mode
8163  *
8164  * Since: 2.6
8165  **/
8166 gboolean
8167 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8168 {
8169   return tree_view->priv->fixed_height_mode;
8170 }
8171
8172 /* Returns TRUE if the focus is within the headers, after the focus operation is
8173  * done
8174  */
8175 static gboolean
8176 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8177                             GtkDirectionType  dir,
8178                             gboolean          clamp_column_visible)
8179 {
8180   GtkTreeViewColumn *column;
8181   GtkWidget *focus_child;
8182   GtkWidget *button;
8183   GList *last_column, *first_column;
8184   GList *tmp_list;
8185   gboolean rtl;
8186
8187   if (! tree_view->priv->headers_visible)
8188     return FALSE;
8189
8190   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8191
8192   first_column = tree_view->priv->columns;
8193   while (first_column)
8194     {
8195       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8196       button = gtk_tree_view_column_get_button (column);
8197
8198       if (gtk_widget_get_can_focus (button) &&
8199           gtk_tree_view_column_get_visible (column) &&
8200           (gtk_tree_view_column_get_clickable (column) ||
8201            gtk_tree_view_column_get_reorderable (column)))
8202         break;
8203       first_column = first_column->next;
8204     }
8205
8206   /* No headers are visible, or are focusable.  We can't focus in or out.
8207    */
8208   if (first_column == NULL)
8209     return FALSE;
8210
8211   last_column = g_list_last (tree_view->priv->columns);
8212   while (last_column)
8213     {
8214       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8215       button = gtk_tree_view_column_get_button (column);
8216
8217       if (gtk_widget_get_can_focus (button) &&
8218           gtk_tree_view_column_get_visible (column) &&
8219           (gtk_tree_view_column_get_clickable (column) ||
8220            gtk_tree_view_column_get_reorderable (column)))
8221         break;
8222       last_column = last_column->prev;
8223     }
8224
8225
8226   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8227
8228   switch (dir)
8229     {
8230     case GTK_DIR_TAB_BACKWARD:
8231     case GTK_DIR_TAB_FORWARD:
8232     case GTK_DIR_UP:
8233     case GTK_DIR_DOWN:
8234       if (focus_child == NULL)
8235         {
8236           if (tree_view->priv->focus_column != NULL)
8237             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8238           else
8239             button = NULL;
8240
8241           if (button && gtk_widget_get_can_focus (button))
8242             focus_child = button;
8243           else
8244             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8245
8246           gtk_widget_grab_focus (focus_child);
8247           break;
8248         }
8249       return FALSE;
8250
8251     case GTK_DIR_LEFT:
8252     case GTK_DIR_RIGHT:
8253       if (focus_child == NULL)
8254         {
8255           if (tree_view->priv->focus_column != NULL)
8256             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8257           else if (dir == GTK_DIR_LEFT)
8258             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8259           else
8260             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8261
8262           gtk_widget_grab_focus (focus_child);
8263           break;
8264         }
8265
8266       if (gtk_widget_child_focus (focus_child, dir))
8267         {
8268           /* The focus moves inside the button. */
8269           /* This is probably a great example of bad UI */
8270           break;
8271         }
8272
8273       /* We need to move the focus among the row of buttons. */
8274       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8275         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8276           break;
8277
8278       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8279           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8280         {
8281           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8282           break;
8283         }
8284
8285       while (tmp_list)
8286         {
8287           GtkTreeViewColumn *column;
8288           GtkWidget         *button;
8289
8290           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8291             tmp_list = tmp_list->next;
8292           else
8293             tmp_list = tmp_list->prev;
8294
8295           if (tmp_list == NULL)
8296             {
8297               g_warning ("Internal button not found");
8298               break;
8299             }
8300           column = tmp_list->data;
8301           button = gtk_tree_view_column_get_button (column);
8302           if (button &&
8303               gtk_tree_view_column_get_visible (column) &&
8304               gtk_widget_get_can_focus (button))
8305             {
8306               focus_child = button;
8307               gtk_widget_grab_focus (button);
8308               break;
8309             }
8310         }
8311       break;
8312     default:
8313       g_assert_not_reached ();
8314       break;
8315     }
8316
8317   /* if focus child is non-null, we assume it's been set to the current focus child
8318    */
8319   if (focus_child)
8320     {
8321       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8322         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8323           {
8324             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8325             break;
8326           }
8327
8328       if (clamp_column_visible)
8329         {
8330           gtk_tree_view_clamp_column_visible (tree_view,
8331                                               tree_view->priv->focus_column,
8332                                               FALSE);
8333         }
8334     }
8335
8336   return (focus_child != NULL);
8337 }
8338
8339 /* This function returns in 'path' the first focusable path, if the given path
8340  * is already focusable, it's the returned one.
8341  */
8342 static gboolean
8343 search_first_focusable_path (GtkTreeView  *tree_view,
8344                              GtkTreePath **path,
8345                              gboolean      search_forward,
8346                              GtkRBTree   **new_tree,
8347                              GtkRBNode   **new_node)
8348 {
8349   GtkRBTree *tree = NULL;
8350   GtkRBNode *node = NULL;
8351
8352   if (!path || !*path)
8353     return FALSE;
8354
8355   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8356
8357   if (!tree || !node)
8358     return FALSE;
8359
8360   while (node && row_is_separator (tree_view, NULL, *path))
8361     {
8362       if (search_forward)
8363         _gtk_rbtree_next_full (tree, node, &tree, &node);
8364       else
8365         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8366
8367       if (*path)
8368         gtk_tree_path_free (*path);
8369
8370       if (node)
8371         *path = _gtk_tree_view_find_path (tree_view, tree, node);
8372       else
8373         *path = NULL;
8374     }
8375
8376   if (new_tree)
8377     *new_tree = tree;
8378
8379   if (new_node)
8380     *new_node = node;
8381
8382   return (*path != NULL);
8383 }
8384
8385 static gint
8386 gtk_tree_view_focus (GtkWidget        *widget,
8387                      GtkDirectionType  direction)
8388 {
8389   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8390   GtkContainer *container = GTK_CONTAINER (widget);
8391   GtkWidget *focus_child;
8392
8393   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8394     return FALSE;
8395
8396   focus_child = gtk_container_get_focus_child (container);
8397
8398   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8399   /* Case 1.  Headers currently have focus. */
8400   if (focus_child)
8401     {
8402       switch (direction)
8403         {
8404         case GTK_DIR_LEFT:
8405         case GTK_DIR_RIGHT:
8406           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8407           return TRUE;
8408         case GTK_DIR_TAB_BACKWARD:
8409         case GTK_DIR_UP:
8410           return FALSE;
8411         case GTK_DIR_TAB_FORWARD:
8412         case GTK_DIR_DOWN:
8413           gtk_widget_grab_focus (widget);
8414           return TRUE;
8415         default:
8416           g_assert_not_reached ();
8417           return FALSE;
8418         }
8419     }
8420
8421   /* Case 2. We don't have focus at all. */
8422   if (!gtk_widget_has_focus (widget))
8423     {
8424       gtk_widget_grab_focus (widget);
8425       return TRUE;
8426     }
8427
8428   /* Case 3. We have focus already. */
8429   if (direction == GTK_DIR_TAB_BACKWARD)
8430     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8431   else if (direction == GTK_DIR_TAB_FORWARD)
8432     return FALSE;
8433
8434   /* Other directions caught by the keybindings */
8435   gtk_widget_grab_focus (widget);
8436   return TRUE;
8437 }
8438
8439 static void
8440 gtk_tree_view_grab_focus (GtkWidget *widget)
8441 {
8442   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8443
8444   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8445 }
8446
8447 static void
8448 gtk_tree_view_style_updated (GtkWidget *widget)
8449 {
8450   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8451   GList *list;
8452   GtkTreeViewColumn *column;
8453
8454   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8455
8456   if (gtk_widget_get_realized (widget))
8457     {
8458       GtkStyleContext *context;
8459
8460       context = gtk_widget_get_style_context (widget);
8461
8462       gtk_style_context_save (context);
8463       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
8464       gtk_style_context_set_background (context, tree_view->priv->bin_window);
8465       gtk_style_context_restore (context);
8466
8467       gtk_style_context_set_background (context, tree_view->priv->header_window);
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   return path;
8556 }
8557
8558 static gboolean
8559 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8560                                 GtkMovementStep    step,
8561                                 gint               count)
8562 {
8563   GdkModifierType state;
8564
8565   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8566   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8567                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8568                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8569                         step == GTK_MOVEMENT_PAGES ||
8570                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8571
8572   if (tree_view->priv->tree == NULL)
8573     return FALSE;
8574   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8575     return FALSE;
8576
8577   gtk_tree_view_stop_editing (tree_view, FALSE);
8578   tree_view->priv->draw_keyfocus = TRUE;
8579   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8580
8581   if (gtk_get_current_event_state (&state))
8582     {
8583       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8584         tree_view->priv->ctrl_pressed = TRUE;
8585       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8586         tree_view->priv->shift_pressed = TRUE;
8587     }
8588   /* else we assume not pressed */
8589
8590   switch (step)
8591     {
8592       /* currently we make no distinction.  When we go bi-di, we need to */
8593     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8594     case GTK_MOVEMENT_VISUAL_POSITIONS:
8595       gtk_tree_view_move_cursor_left_right (tree_view, count);
8596       break;
8597     case GTK_MOVEMENT_DISPLAY_LINES:
8598       gtk_tree_view_move_cursor_up_down (tree_view, count);
8599       break;
8600     case GTK_MOVEMENT_PAGES:
8601       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8602       break;
8603     case GTK_MOVEMENT_BUFFER_ENDS:
8604       gtk_tree_view_move_cursor_start_end (tree_view, count);
8605       break;
8606     default:
8607       g_assert_not_reached ();
8608     }
8609
8610   tree_view->priv->ctrl_pressed = FALSE;
8611   tree_view->priv->shift_pressed = FALSE;
8612
8613   return TRUE;
8614 }
8615
8616 static void
8617 gtk_tree_view_put (GtkTreeView *tree_view,
8618                    GtkWidget   *child_widget,
8619                    /* in bin_window coordinates */
8620                    gint         x,
8621                    gint         y,
8622                    gint         width,
8623                    gint         height)
8624 {
8625   GtkTreeViewChild *child;
8626
8627   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8628   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8629
8630   child = g_slice_new (GtkTreeViewChild);
8631
8632   child->widget = child_widget;
8633   child->x = x;
8634   child->y = y;
8635   child->width = width;
8636   child->height = height;
8637
8638   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8639
8640   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8641     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8642
8643   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8644 }
8645
8646 void
8647 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8648                                   GtkWidget   *widget,
8649                                   /* in tree coordinates */
8650                                   gint         x,
8651                                   gint         y,
8652                                   gint         width,
8653                                   gint         height)
8654 {
8655   GtkTreeViewChild *child = NULL;
8656   GList *list;
8657   GdkRectangle allocation;
8658
8659   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8660   g_return_if_fail (GTK_IS_WIDGET (widget));
8661
8662   for (list = tree_view->priv->children; list; list = list->next)
8663     {
8664       if (((GtkTreeViewChild *)list->data)->widget == widget)
8665         {
8666           child = list->data;
8667           break;
8668         }
8669     }
8670   if (child == NULL)
8671     return;
8672
8673   allocation.x = child->x = x;
8674   allocation.y = child->y = y;
8675   allocation.width = child->width = width;
8676   allocation.height = child->height = height;
8677
8678   if (gtk_widget_get_realized (widget))
8679     gtk_widget_size_allocate (widget, &allocation);
8680 }
8681
8682
8683 /* TreeModel Callbacks
8684  */
8685
8686 static void
8687 gtk_tree_view_row_changed (GtkTreeModel *model,
8688                            GtkTreePath  *path,
8689                            GtkTreeIter  *iter,
8690                            gpointer      data)
8691 {
8692   GtkTreeView *tree_view = (GtkTreeView *)data;
8693   GtkRBTree *tree;
8694   GtkRBNode *node;
8695   gboolean free_path = FALSE;
8696   GList *list;
8697   GtkTreePath *cursor_path;
8698
8699   g_return_if_fail (path != NULL || iter != NULL);
8700
8701   if (tree_view->priv->cursor != NULL)
8702     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8703   else
8704     cursor_path = NULL;
8705
8706   if (tree_view->priv->edited_column &&
8707       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8708     gtk_tree_view_stop_editing (tree_view, TRUE);
8709
8710   if (cursor_path != NULL)
8711     gtk_tree_path_free (cursor_path);
8712
8713   if (path == NULL)
8714     {
8715       path = gtk_tree_model_get_path (model, iter);
8716       free_path = TRUE;
8717     }
8718   else if (iter == NULL)
8719     gtk_tree_model_get_iter (model, iter, path);
8720
8721   if (_gtk_tree_view_find_node (tree_view,
8722                                 path,
8723                                 &tree,
8724                                 &node))
8725     /* We aren't actually showing the node */
8726     goto done;
8727
8728   if (tree == NULL)
8729     goto done;
8730
8731   if (tree_view->priv->fixed_height_mode
8732       && tree_view->priv->fixed_height >= 0)
8733     {
8734       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8735       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8736         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8737     }
8738   else
8739     {
8740       _gtk_rbtree_node_mark_invalid (tree, node);
8741       for (list = tree_view->priv->columns; list; list = list->next)
8742         {
8743           GtkTreeViewColumn *column;
8744
8745           column = list->data;
8746           if (!gtk_tree_view_column_get_visible (column))
8747             continue;
8748
8749           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8750             {
8751               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8752             }
8753         }
8754     }
8755
8756  done:
8757   if (!tree_view->priv->fixed_height_mode &&
8758       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8759     install_presize_handler (tree_view);
8760   if (free_path)
8761     gtk_tree_path_free (path);
8762 }
8763
8764 static void
8765 gtk_tree_view_row_inserted (GtkTreeModel *model,
8766                             GtkTreePath  *path,
8767                             GtkTreeIter  *iter,
8768                             gpointer      data)
8769 {
8770   GtkTreeView *tree_view = (GtkTreeView *) data;
8771   gint *indices;
8772   GtkRBTree *tmptree, *tree;
8773   GtkRBNode *tmpnode = NULL;
8774   gint depth;
8775   gint i = 0;
8776   gint height;
8777   gboolean free_path = FALSE;
8778   gboolean node_visible = TRUE;
8779
8780   g_return_if_fail (path != NULL || iter != NULL);
8781
8782   if (tree_view->priv->fixed_height_mode
8783       && tree_view->priv->fixed_height >= 0)
8784     height = tree_view->priv->fixed_height;
8785   else
8786     height = 0;
8787
8788   if (path == NULL)
8789     {
8790       path = gtk_tree_model_get_path (model, iter);
8791       free_path = TRUE;
8792     }
8793   else if (iter == NULL)
8794     gtk_tree_model_get_iter (model, iter, path);
8795
8796   if (tree_view->priv->tree == NULL)
8797     tree_view->priv->tree = _gtk_rbtree_new ();
8798
8799   tmptree = tree = tree_view->priv->tree;
8800
8801   /* Update all row-references */
8802   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8803   depth = gtk_tree_path_get_depth (path);
8804   indices = gtk_tree_path_get_indices (path);
8805
8806   /* First, find the parent tree */
8807   while (i < depth - 1)
8808     {
8809       if (tmptree == NULL)
8810         {
8811           /* We aren't showing the node */
8812           node_visible = FALSE;
8813           goto done;
8814         }
8815
8816       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8817       if (tmpnode == NULL)
8818         {
8819           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8820                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8821                      "before the parent was inserted.");
8822           goto done;
8823         }
8824       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8825         {
8826           /* FIXME enforce correct behavior on model, probably */
8827           /* In theory, the model should have emitted has_child_toggled here.  We
8828            * try to catch it anyway, just to be safe, in case the model hasn't.
8829            */
8830           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8831                                                            tree,
8832                                                            tmpnode);
8833           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8834           gtk_tree_path_free (tmppath);
8835           goto done;
8836         }
8837
8838       tmptree = tmpnode->children;
8839       tree = tmptree;
8840       i++;
8841     }
8842
8843   if (tree == NULL)
8844     {
8845       node_visible = FALSE;
8846       goto done;
8847     }
8848
8849   /* ref the node */
8850   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8851   if (indices[depth - 1] == 0)
8852     {
8853       tmpnode = _gtk_rbtree_find_count (tree, 1);
8854       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8855     }
8856   else
8857     {
8858       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8859       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8860     }
8861
8862  done:
8863   if (height > 0)
8864     {
8865       if (tree)
8866         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8867
8868       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8869         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8870       else
8871         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8872     }
8873   else
8874     install_presize_handler (tree_view);
8875   if (free_path)
8876     gtk_tree_path_free (path);
8877 }
8878
8879 static void
8880 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8881                                      GtkTreePath  *path,
8882                                      GtkTreeIter  *iter,
8883                                      gpointer      data)
8884 {
8885   GtkTreeView *tree_view = (GtkTreeView *)data;
8886   GtkTreeIter real_iter;
8887   gboolean has_child;
8888   GtkRBTree *tree;
8889   GtkRBNode *node;
8890   gboolean free_path = FALSE;
8891
8892   g_return_if_fail (path != NULL || iter != NULL);
8893
8894   if (iter)
8895     real_iter = *iter;
8896
8897   if (path == NULL)
8898     {
8899       path = gtk_tree_model_get_path (model, iter);
8900       free_path = TRUE;
8901     }
8902   else if (iter == NULL)
8903     gtk_tree_model_get_iter (model, &real_iter, path);
8904
8905   if (_gtk_tree_view_find_node (tree_view,
8906                                 path,
8907                                 &tree,
8908                                 &node))
8909     /* We aren't actually showing the node */
8910     goto done;
8911
8912   if (tree == NULL)
8913     goto done;
8914
8915   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8916   /* Sanity check.
8917    */
8918   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8919     goto done;
8920
8921   if (has_child)
8922     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8923   else
8924     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8925
8926   if (has_child && tree_view->priv->is_list)
8927     {
8928       tree_view->priv->is_list = FALSE;
8929       if (tree_view->priv->show_expanders)
8930         {
8931           GList *list;
8932
8933           for (list = tree_view->priv->columns; list; list = list->next)
8934             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8935               {
8936                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8937                 break;
8938               }
8939         }
8940       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8941     }
8942   else
8943     {
8944       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8945     }
8946
8947  done:
8948   if (free_path)
8949     gtk_tree_path_free (path);
8950 }
8951
8952 static void
8953 count_children_helper (GtkRBTree *tree,
8954                        GtkRBNode *node,
8955                        gpointer   data)
8956 {
8957   if (node->children)
8958     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8959   (*((gint *)data))++;
8960 }
8961
8962 static void
8963 check_selection_helper (GtkRBTree *tree,
8964                         GtkRBNode *node,
8965                         gpointer   data)
8966 {
8967   gint *value = (gint *)data;
8968
8969   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8970
8971   if (node->children && !*value)
8972     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8973 }
8974
8975 static void
8976 gtk_tree_view_row_deleted (GtkTreeModel *model,
8977                            GtkTreePath  *path,
8978                            gpointer      data)
8979 {
8980   GtkTreeView *tree_view = (GtkTreeView *)data;
8981   GtkRBTree *tree;
8982   GtkRBNode *node;
8983   GList *list;
8984   gint selection_changed = FALSE;
8985   GtkStyleContext *context;
8986
8987   g_return_if_fail (path != NULL);
8988
8989   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8990
8991   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8992     return;
8993
8994   if (tree == NULL)
8995     return;
8996
8997   /* check if the selection has been changed */
8998   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8999                         check_selection_helper, &selection_changed);
9000
9001   for (list = tree_view->priv->columns; list; list = list->next)
9002     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9003         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9004       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9005
9006   /* Ensure we don't have a dangling pointer to a dead node */
9007   ensure_unprelighted (tree_view);
9008
9009   /* Cancel editting if we've started */
9010   gtk_tree_view_stop_editing (tree_view, TRUE);
9011
9012   if (tree_view->priv->destroy_count_func)
9013     {
9014       gint child_count = 0;
9015       if (node->children)
9016         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9017       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9018     }
9019
9020   if (tree->root->count == 1)
9021     {
9022       if (tree_view->priv->tree == tree)
9023         tree_view->priv->tree = NULL;
9024
9025       _gtk_rbtree_remove (tree);
9026     }
9027   else
9028     {
9029       _gtk_rbtree_remove_node (tree, node);
9030     }
9031
9032   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9033     {
9034       gtk_tree_row_reference_free (tree_view->priv->top_row);
9035       tree_view->priv->top_row = NULL;
9036     }
9037
9038   /* Cancel any ongoing animation happening within the row */
9039   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9040   gtk_style_context_cancel_animations (context, node);
9041
9042   install_scroll_sync_handler (tree_view);
9043
9044   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9045
9046   if (selection_changed)
9047     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9048 }
9049
9050 static void
9051 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9052                               GtkTreePath  *parent,
9053                               GtkTreeIter  *iter,
9054                               gint         *new_order,
9055                               gpointer      data)
9056 {
9057   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9058   GtkRBTree *tree;
9059   GtkRBNode *node;
9060   gint len;
9061
9062   len = gtk_tree_model_iter_n_children (model, iter);
9063
9064   if (len < 2)
9065     return;
9066
9067   gtk_tree_row_reference_reordered (G_OBJECT (data),
9068                                     parent,
9069                                     iter,
9070                                     new_order);
9071
9072   if (_gtk_tree_view_find_node (tree_view,
9073                                 parent,
9074                                 &tree,
9075                                 &node))
9076     return;
9077
9078   /* We need to special case the parent path */
9079   if (tree == NULL)
9080     tree = tree_view->priv->tree;
9081   else
9082     tree = node->children;
9083
9084   if (tree == NULL)
9085     return;
9086
9087   if (tree_view->priv->edited_column)
9088     gtk_tree_view_stop_editing (tree_view, TRUE);
9089
9090   /* we need to be unprelighted */
9091   ensure_unprelighted (tree_view);
9092
9093   _gtk_rbtree_reorder (tree, new_order, len);
9094
9095   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9096
9097   gtk_tree_view_dy_to_top_row (tree_view);
9098 }
9099
9100
9101 /* Internal tree functions
9102  */
9103
9104
9105 static void
9106 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9107                                      GtkRBTree         *tree,
9108                                      GtkTreeViewColumn *column,
9109                                      gint              *x1,
9110                                      gint              *x2)
9111 {
9112   GtkTreeViewColumn *tmp_column = NULL;
9113   gint total_width;
9114   GList *list;
9115   gboolean rtl;
9116
9117   if (x1)
9118     *x1 = 0;
9119
9120   if (x2)
9121     *x2 = 0;
9122
9123   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9124
9125   total_width = 0;
9126   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9127        list;
9128        list = (rtl ? list->prev : list->next))
9129     {
9130       tmp_column = list->data;
9131
9132       if (tmp_column == column)
9133         break;
9134
9135       if (gtk_tree_view_column_get_visible (tmp_column))
9136         total_width += gtk_tree_view_column_get_width (tmp_column);
9137     }
9138
9139   if (tmp_column != column)
9140     {
9141       g_warning (G_STRLOC": passed-in column isn't in the tree");
9142       return;
9143     }
9144
9145   if (x1)
9146     *x1 = total_width;
9147
9148   if (x2)
9149     {
9150       if (gtk_tree_view_column_get_visible (column))
9151         *x2 = total_width + gtk_tree_view_column_get_width (column);
9152       else
9153         *x2 = total_width; /* width of 0 */
9154     }
9155 }
9156
9157 static void
9158 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9159                                 GtkRBTree   *tree,
9160                                 gint        *x1,
9161                                 gint        *x2)
9162 {
9163   gint x_offset = 0;
9164   GList *list;
9165   GtkTreeViewColumn *tmp_column = NULL;
9166   gint total_width;
9167   gboolean indent_expanders;
9168   gboolean rtl;
9169
9170   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9171
9172   total_width = 0;
9173   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9174        list;
9175        list = (rtl ? list->prev : list->next))
9176     {
9177       tmp_column = list->data;
9178
9179       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9180         {
9181           if (rtl)
9182             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9183           else
9184             x_offset = total_width;
9185           break;
9186         }
9187
9188       if (gtk_tree_view_column_get_visible (tmp_column))
9189         total_width += gtk_tree_view_column_get_width (tmp_column);
9190     }
9191
9192   gtk_widget_style_get (GTK_WIDGET (tree_view),
9193                         "indent-expanders", &indent_expanders,
9194                         NULL);
9195
9196   if (indent_expanders)
9197     {
9198       if (rtl)
9199         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9200       else
9201         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9202     }
9203
9204   *x1 = x_offset;
9205
9206   if (tmp_column &&
9207       gtk_tree_view_column_get_visible (tmp_column))
9208     /* +1 because x2 isn't included in the range. */
9209     *x2 = *x1 + tree_view->priv->expander_size + 1;
9210   else
9211     *x2 = *x1;
9212 }
9213
9214 static void
9215 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9216                           GtkRBTree   *tree,
9217                           GtkTreeIter *iter,
9218                           gint         depth,
9219                           gboolean     recurse)
9220 {
9221   GtkRBNode *temp = NULL;
9222   GtkTreePath *path = NULL;
9223
9224   do
9225     {
9226       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9227       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9228
9229       if (tree_view->priv->fixed_height > 0)
9230         {
9231           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9232             {
9233               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9234               _gtk_rbtree_node_mark_valid (tree, temp);
9235             }
9236         }
9237
9238       if (tree_view->priv->is_list)
9239         continue;
9240
9241       if (recurse)
9242         {
9243           GtkTreeIter child;
9244
9245           if (!path)
9246             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9247           else
9248             gtk_tree_path_next (path);
9249
9250           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9251             {
9252               gboolean expand;
9253
9254               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9255
9256               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9257                   && !expand)
9258                 {
9259                   temp->children = _gtk_rbtree_new ();
9260                   temp->children->parent_tree = tree;
9261                   temp->children->parent_node = temp;
9262                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9263                 }
9264             }
9265         }
9266
9267       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9268         {
9269           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9270             temp->flags ^= GTK_RBNODE_IS_PARENT;
9271         }
9272     }
9273   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9274
9275   if (path)
9276     gtk_tree_path_free (path);
9277 }
9278
9279 /* Make sure the node is visible vertically */
9280 static void
9281 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9282                                   GtkRBTree   *tree,
9283                                   GtkRBNode   *node)
9284 {
9285   gint node_dy, height;
9286   GtkTreePath *path = NULL;
9287
9288   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9289     return;
9290
9291   /* just return if the node is visible, avoiding a costly expose */
9292   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9293   height = gtk_tree_view_get_row_height (tree_view, node);
9294   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9295       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9296       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9297                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9298     return;
9299
9300   path = _gtk_tree_view_find_path (tree_view, tree, node);
9301   if (path)
9302     {
9303       /* We process updates because we want to clear old selected items when we scroll.
9304        * if this is removed, we get a "selection streak" at the bottom. */
9305       gtk_tree_view_bin_process_updates (tree_view);
9306
9307       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9308       gtk_tree_path_free (path);
9309     }
9310 }
9311
9312 static void
9313 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9314                                     GtkTreeViewColumn *column,
9315                                     gboolean           focus_to_cell)
9316 {
9317   GtkAllocation allocation;
9318   gint x, width;
9319
9320   if (column == NULL)
9321     return;
9322
9323   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9324   x = allocation.x;
9325   width = allocation.width;
9326
9327   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9328     {
9329       /* The column is larger than the horizontal page size.  If the
9330        * column has cells which can be focussed individually, then we make
9331        * sure the cell which gets focus is fully visible (if even the
9332        * focus cell is bigger than the page size, we make sure the
9333        * left-hand side of the cell is visible).
9334        *
9335        * If the column does not have an activatable cell, we
9336        * make sure the left-hand side of the column is visible.
9337        */
9338
9339       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9340         {
9341           GtkCellArea *cell_area;
9342           GtkCellRenderer *focus_cell;
9343
9344           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9345           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9346
9347           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9348                                                       &x, &width))
9349             {
9350               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9351                 {
9352                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9353                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9354                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9355                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9356                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9357                 }
9358             }
9359         }
9360
9361       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9362     }
9363   else
9364     {
9365       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9366           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9367                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9368       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9369         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9370   }
9371 }
9372
9373 /* This function could be more efficient.  I'll optimize it if profiling seems
9374  * to imply that it is important */
9375 GtkTreePath *
9376 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9377                           GtkRBTree   *tree,
9378                           GtkRBNode   *node)
9379 {
9380   GtkTreePath *path;
9381   GtkRBTree *tmp_tree;
9382   GtkRBNode *tmp_node, *last;
9383   gint count;
9384
9385   path = gtk_tree_path_new ();
9386
9387   g_return_val_if_fail (node != NULL, path);
9388   g_return_val_if_fail (node != tree->nil, path);
9389
9390   count = 1 + node->left->count;
9391
9392   last = node;
9393   tmp_node = node->parent;
9394   tmp_tree = tree;
9395   while (tmp_tree)
9396     {
9397       while (tmp_node != tmp_tree->nil)
9398         {
9399           if (tmp_node->right == last)
9400             count += 1 + tmp_node->left->count;
9401           last = tmp_node;
9402           tmp_node = tmp_node->parent;
9403         }
9404       gtk_tree_path_prepend_index (path, count - 1);
9405       last = tmp_tree->parent_node;
9406       tmp_tree = tmp_tree->parent_tree;
9407       if (last)
9408         {
9409           count = 1 + last->left->count;
9410           tmp_node = last->parent;
9411         }
9412     }
9413   return path;
9414 }
9415
9416 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9417  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9418  * both set to NULL.
9419  */
9420 gboolean
9421 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9422                           GtkTreePath  *path,
9423                           GtkRBTree   **tree,
9424                           GtkRBNode   **node)
9425 {
9426   GtkRBNode *tmpnode = NULL;
9427   GtkRBTree *tmptree = tree_view->priv->tree;
9428   gint *indices = gtk_tree_path_get_indices (path);
9429   gint depth = gtk_tree_path_get_depth (path);
9430   gint i = 0;
9431
9432   *node = NULL;
9433   *tree = NULL;
9434
9435   if (depth == 0 || tmptree == NULL)
9436     return FALSE;
9437   do
9438     {
9439       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9440       ++i;
9441       if (tmpnode == NULL)
9442         {
9443           *tree = NULL;
9444           *node = NULL;
9445           return FALSE;
9446         }
9447       if (i >= depth)
9448         {
9449           *tree = tmptree;
9450           *node = tmpnode;
9451           return FALSE;
9452         }
9453       *tree = tmptree;
9454       *node = tmpnode;
9455       tmptree = tmpnode->children;
9456       if (tmptree == NULL)
9457         return TRUE;
9458     }
9459   while (1);
9460 }
9461
9462 static gboolean
9463 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9464                                   GtkTreeViewColumn *column)
9465 {
9466   GList *list;
9467
9468   if (tree_view->priv->is_list)
9469     return FALSE;
9470
9471   if (tree_view->priv->expander_column != NULL)
9472     {
9473       if (tree_view->priv->expander_column == column)
9474         return TRUE;
9475       return FALSE;
9476     }
9477   else
9478     {
9479       for (list = tree_view->priv->columns;
9480            list;
9481            list = list->next)
9482         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9483           break;
9484       if (list && list->data == column)
9485         return TRUE;
9486     }
9487   return FALSE;
9488 }
9489
9490 static inline gboolean
9491 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9492 {
9493   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9494     return TRUE;
9495   /* else */
9496   return FALSE;
9497 }
9498
9499 static void
9500 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9501                                 guint           keyval,
9502                                 guint           modmask,
9503                                 gboolean        add_shifted_binding,
9504                                 GtkMovementStep step,
9505                                 gint            count)
9506 {
9507
9508   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9509                                 "move-cursor", 2,
9510                                 G_TYPE_ENUM, step,
9511                                 G_TYPE_INT, count);
9512
9513   if (add_shifted_binding)
9514     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9515                                   "move-cursor", 2,
9516                                   G_TYPE_ENUM, step,
9517                                   G_TYPE_INT, count);
9518
9519   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9520    return;
9521
9522   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9523                                 "move-cursor", 2,
9524                                 G_TYPE_ENUM, step,
9525                                 G_TYPE_INT, count);
9526
9527   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9528                                 "move-cursor", 2,
9529                                 G_TYPE_ENUM, step,
9530                                 G_TYPE_INT, count);
9531 }
9532
9533 static gint
9534 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9535                                  GtkTreeIter  *iter,
9536                                  GtkRBTree    *tree,
9537                                  GtkRBNode    *node)
9538 {
9539   gint retval = FALSE;
9540   do
9541     {
9542       g_return_val_if_fail (node != NULL, FALSE);
9543
9544       if (node->children)
9545         {
9546           GtkTreeIter child;
9547           GtkRBTree *new_tree;
9548           GtkRBNode *new_node;
9549
9550           new_tree = node->children;
9551           new_node = new_tree->root;
9552
9553           while (new_node && new_node->left != new_tree->nil)
9554             new_node = new_node->left;
9555
9556           if (!gtk_tree_model_iter_children (model, &child, iter))
9557             return FALSE;
9558
9559           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9560         }
9561
9562       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9563         retval = TRUE;
9564       gtk_tree_model_unref_node (model, iter);
9565       node = _gtk_rbtree_next (tree, node);
9566     }
9567   while (gtk_tree_model_iter_next (model, iter));
9568
9569   return retval;
9570 }
9571
9572 static gint
9573 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9574                                               GtkRBTree   *tree)
9575 {
9576   GtkTreeIter iter;
9577   GtkTreePath *path;
9578   GtkRBNode *node;
9579   gint retval;
9580
9581   if (!tree)
9582     return FALSE;
9583
9584   node = tree->root;
9585   while (node && node->left != tree->nil)
9586     node = node->left;
9587
9588   g_return_val_if_fail (node != NULL, FALSE);
9589   path = _gtk_tree_view_find_path (tree_view, tree, node);
9590   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9591                            &iter, path);
9592   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9593   gtk_tree_path_free (path);
9594
9595   return retval;
9596 }
9597
9598 static void
9599 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9600                                     GtkTreeViewColumn *column)
9601 {
9602   GtkTreeViewColumn *left_column;
9603   GtkTreeViewColumn *cur_column = NULL;
9604   GtkTreeViewColumnReorder *reorder;
9605   gboolean rtl;
9606   GList *tmp_list;
9607   gint left;
9608
9609   /* We want to precalculate the motion list such that we know what column slots
9610    * are available.
9611    */
9612   left_column = NULL;
9613   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9614
9615   /* First, identify all possible drop spots */
9616   if (rtl)
9617     tmp_list = g_list_last (tree_view->priv->columns);
9618   else
9619     tmp_list = g_list_first (tree_view->priv->columns);
9620
9621   while (tmp_list)
9622     {
9623       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9624       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9625
9626       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9627         continue;
9628
9629       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9630       if (left_column != column && cur_column != column &&
9631           tree_view->priv->column_drop_func &&
9632           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9633         {
9634           left_column = cur_column;
9635           continue;
9636         }
9637       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9638       reorder->left_column = left_column;
9639       left_column = reorder->right_column = cur_column;
9640
9641       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9642     }
9643
9644   /* Add the last one */
9645   if (tree_view->priv->column_drop_func == NULL ||
9646       ((left_column != column) &&
9647        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9648     {
9649       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9650       reorder->left_column = left_column;
9651       reorder->right_column = NULL;
9652       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9653     }
9654
9655   /* We quickly check to see if it even makes sense to reorder columns. */
9656   /* If there is nothing that can be moved, then we return */
9657
9658   if (tree_view->priv->column_drag_info == NULL)
9659     return;
9660
9661   /* We know there are always 2 slots possbile, as you can always return column. */
9662   /* If that's all there is, return */
9663   if (tree_view->priv->column_drag_info->next == NULL ||
9664       (tree_view->priv->column_drag_info->next->next == NULL &&
9665        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9666        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9667     {
9668       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9669         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9670       g_list_free (tree_view->priv->column_drag_info);
9671       tree_view->priv->column_drag_info = NULL;
9672       return;
9673     }
9674   /* We fill in the ranges for the columns, now that we've isolated them */
9675   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9676
9677   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9678     {
9679       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9680
9681       reorder->left_align = left;
9682       if (tmp_list->next != NULL)
9683         {
9684           GtkAllocation right_allocation, left_allocation;
9685           GtkWidget    *left_button, *right_button;
9686
9687           g_assert (tmp_list->next->data);
9688
9689           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9690           left_button  = gtk_tree_view_column_get_button
9691             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9692
9693           gtk_widget_get_allocation (right_button, &right_allocation);
9694           gtk_widget_get_allocation (left_button, &left_allocation);
9695           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9696         }
9697       else
9698         {
9699           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9700                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9701         }
9702     }
9703 }
9704
9705 void
9706 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9707                                   GtkTreeViewColumn *column,
9708                                   GdkDevice         *device)
9709 {
9710   GdkEvent *send_event;
9711   GtkAllocation allocation;
9712   GtkAllocation button_allocation;
9713   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9714   GtkWidget *button;
9715   GdkDevice *pointer, *keyboard;
9716
9717   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9718   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9719
9720   gtk_tree_view_set_column_drag_info (tree_view, column);
9721
9722   if (tree_view->priv->column_drag_info == NULL)
9723     return;
9724
9725   button = gtk_tree_view_column_get_button (column);
9726
9727   if (tree_view->priv->drag_window == NULL)
9728     {
9729       GdkWindowAttr attributes;
9730       guint attributes_mask;
9731
9732       gtk_widget_get_allocation (button, &button_allocation);
9733
9734       attributes.window_type = GDK_WINDOW_CHILD;
9735       attributes.wclass = GDK_INPUT_OUTPUT;
9736       attributes.x = button_allocation.x;
9737       attributes.y = 0;
9738       attributes.width = button_allocation.width;
9739       attributes.height = button_allocation.height;
9740       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9741       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9742       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9743
9744       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9745                                                      &attributes,
9746                                                      attributes_mask);
9747       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9748     }
9749
9750   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9751     {
9752       keyboard = device;
9753       pointer = gdk_device_get_associated_device (device);
9754     }
9755   else
9756     {
9757       pointer = device;
9758       keyboard = gdk_device_get_associated_device (device);
9759     }
9760
9761   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9762   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9763
9764   gtk_grab_remove (button);
9765
9766   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9767   send_event->crossing.send_event = TRUE;
9768   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9769   send_event->crossing.subwindow = NULL;
9770   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9771   send_event->crossing.time = GDK_CURRENT_TIME;
9772   gdk_event_set_device (send_event, device);
9773
9774   gtk_propagate_event (button, send_event);
9775   gdk_event_free (send_event);
9776
9777   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9778   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9779   send_event->button.send_event = TRUE;
9780   send_event->button.time = GDK_CURRENT_TIME;
9781   send_event->button.x = -1;
9782   send_event->button.y = -1;
9783   send_event->button.axes = NULL;
9784   send_event->button.state = 0;
9785   send_event->button.button = 1;
9786   send_event->button.x_root = 0;
9787   send_event->button.y_root = 0;
9788   gdk_event_set_device (send_event, device);
9789
9790   gtk_propagate_event (button, send_event);
9791   gdk_event_free (send_event);
9792
9793   /* Kids, don't try this at home */
9794   g_object_ref (button);
9795   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9796   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9797   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9798   g_object_unref (button);
9799
9800   gtk_widget_get_allocation (button, &button_allocation);
9801   tree_view->priv->drag_column_x = button_allocation.x;
9802   allocation = button_allocation;
9803   allocation.x = 0;
9804   gtk_widget_size_allocate (button, &allocation);
9805   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9806
9807   tree_view->priv->drag_column = column;
9808   gdk_window_show (tree_view->priv->drag_window);
9809
9810   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9811   while (gtk_events_pending ())
9812     gtk_main_iteration ();
9813
9814   tree_view->priv->in_column_drag = TRUE;
9815
9816   gdk_device_grab (pointer,
9817                    tree_view->priv->drag_window,
9818                    GDK_OWNERSHIP_NONE,
9819                    FALSE,
9820                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9821                    NULL,
9822                    GDK_CURRENT_TIME);
9823   gdk_device_grab (keyboard,
9824                    tree_view->priv->drag_window,
9825                    GDK_OWNERSHIP_NONE,
9826                    FALSE,
9827                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9828                    NULL,
9829                    GDK_CURRENT_TIME);
9830 }
9831
9832 static void
9833 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9834                                 GtkRBTree          *tree,
9835                                 GtkRBNode          *node)
9836 {
9837   GtkAllocation allocation;
9838   GdkRectangle rect;
9839
9840   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9841     return;
9842
9843   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9844   rect.x = 0;
9845   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9846
9847   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9848   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9849
9850   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9851 }
9852
9853 void
9854 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9855                                 GtkRBTree          *tree,
9856                                 GtkRBNode          *node,
9857                                 const GdkRectangle *clip_rect)
9858 {
9859   GtkAllocation allocation;
9860   GdkRectangle rect;
9861
9862   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9863     return;
9864
9865   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9866   rect.x = 0;
9867   rect.width = MAX (tree_view->priv->width, allocation.width);
9868
9869   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9870   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9871
9872   if (clip_rect)
9873     {
9874       GdkRectangle new_rect;
9875
9876       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9877
9878       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9879     }
9880   else
9881     {
9882       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9883     }
9884 }
9885
9886 static inline gint
9887 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9888 {
9889   if (tree_view->priv->headers_visible)
9890     return tree_view->priv->header_height;
9891   /* else */
9892   return 0;
9893 }
9894
9895 gint
9896 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9897 {
9898   return tree_view->priv->header_height;
9899 }
9900
9901 void
9902 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9903                                        GtkTreeViewRowSeparatorFunc *func,
9904                                        gpointer                    *data)
9905 {
9906   *func = tree_view->priv->row_separator_func;
9907   *data = tree_view->priv->row_separator_data;
9908 }
9909
9910 GtkTreePath *
9911 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9912 {
9913   if (tree_view->priv->anchor)
9914     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9915
9916   return NULL;
9917 }
9918
9919 void
9920 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9921                                 GtkTreePath *anchor_path)
9922 {
9923   if (tree_view->priv->anchor)
9924     {
9925       gtk_tree_row_reference_free (tree_view->priv->anchor);
9926       tree_view->priv->anchor = NULL;
9927     }
9928
9929   if (anchor_path && tree_view->priv->model)
9930     tree_view->priv->anchor =
9931       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9932                                         tree_view->priv->model, anchor_path);
9933 }
9934
9935 GtkRBTree *
9936 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9937 {
9938   return tree_view->priv->tree;
9939 }
9940
9941 GdkWindow *
9942 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
9943 {
9944   return tree_view->priv->header_window;
9945 }
9946
9947 void
9948 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
9949                                  GtkTreeViewColumn *column)
9950 {
9951   tree_view->priv->focus_column = column;
9952 }
9953
9954
9955 static void
9956 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9957                                GtkTreePath        *path,
9958                                const GdkRectangle *clip_rect)
9959 {
9960   GtkRBTree *tree = NULL;
9961   GtkRBNode *node = NULL;
9962
9963   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9964
9965   if (tree)
9966     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9967 }
9968
9969 /* x and y are the mouse position
9970  */
9971 static void
9972 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9973                           cairo_t     *cr,
9974                           GtkRBTree   *tree,
9975                           GtkRBNode   *node,
9976                           /* in bin_window coordinates */
9977                           gint         x,
9978                           gint         y)
9979 {
9980   GdkRectangle area;
9981   GtkStateFlags state = 0;
9982   GtkStyleContext *context;
9983   GtkWidget *widget;
9984   gint x_offset = 0;
9985   gint x2;
9986   gint vertical_separator;
9987   gint expander_size;
9988   GtkCellRendererState flags;
9989
9990   widget = GTK_WIDGET (tree_view);
9991   context = gtk_widget_get_style_context (widget);
9992
9993   gtk_widget_style_get (widget,
9994                         "vertical-separator", &vertical_separator,
9995                         NULL);
9996   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9997
9998   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9999     return;
10000
10001   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10002
10003   area.x = x_offset;
10004   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10005                                                  vertical_separator);
10006   area.width = expander_size;
10007   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10008                                                     vertical_separator);
10009
10010   if (!gtk_widget_get_sensitive (widget))
10011     state |= GTK_STATE_FLAG_INSENSITIVE;
10012   else
10013     {
10014       flags = 0;
10015
10016       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10017         flags |= GTK_CELL_RENDERER_SELECTED;
10018
10019       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10020
10021       if (node == tree_view->priv->button_pressed_node &&
10022           x >= area.x && x <= (area.x + area.width) &&
10023           y >= area.y && y <= (area.y + area.height))
10024         state |= GTK_STATE_FLAG_FOCUSED;
10025
10026       if (node == tree_view->priv->prelight_node &&
10027           tree_view->priv->arrow_prelit)
10028         state |= GTK_STATE_FLAG_PRELIGHT;
10029     }
10030
10031   if (node->children != NULL)
10032     state |= GTK_STATE_FLAG_ACTIVE;
10033
10034   gtk_style_context_save (context);
10035
10036   gtk_style_context_set_state (context, state);
10037   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10038
10039   gtk_style_context_push_animatable_region (context, node);
10040
10041   gtk_render_expander (context, cr,
10042                        area.x, area.y,
10043                        area.width, area.height);
10044
10045   gtk_style_context_pop_animatable_region (context);
10046   gtk_style_context_restore (context);
10047 }
10048
10049 static void
10050 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10051
10052 {
10053   GtkTreePath *cursor_path;
10054
10055   if ((tree_view->priv->tree == NULL) ||
10056       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10057     return;
10058
10059   cursor_path = NULL;
10060   if (tree_view->priv->cursor)
10061     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10062
10063   if (cursor_path == NULL)
10064     {
10065       /* Consult the selection before defaulting to the
10066        * first focusable element
10067        */
10068       GList *selected_rows;
10069       GtkTreeModel *model;
10070       GtkTreeSelection *selection;
10071
10072       selection = gtk_tree_view_get_selection (tree_view);
10073       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10074
10075       if (selected_rows)
10076         {
10077           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10078           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10079           g_list_free (selected_rows);
10080         }
10081       else
10082         {
10083           cursor_path = gtk_tree_path_new_first ();
10084           search_first_focusable_path (tree_view, &cursor_path,
10085                                        TRUE, NULL, NULL);
10086         }
10087
10088       gtk_tree_row_reference_free (tree_view->priv->cursor);
10089       tree_view->priv->cursor = NULL;
10090
10091       if (cursor_path)
10092         {
10093           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10094             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
10095           else
10096             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10097         }
10098     }
10099
10100   if (cursor_path)
10101     {
10102       tree_view->priv->draw_keyfocus = TRUE;
10103
10104       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10105       gtk_tree_path_free (cursor_path);
10106
10107       if (tree_view->priv->focus_column == NULL)
10108         {
10109           GList *list;
10110           for (list = tree_view->priv->columns; list; list = list->next)
10111             {
10112               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10113                 {
10114                   GtkCellArea *cell_area;
10115
10116                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10117
10118                   /* This happens when the treeview initially grabs focus and there
10119                    * is no column in focus, here we explicitly focus into the first cell */
10120                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10121                   if (!gtk_cell_area_get_focus_cell (cell_area))
10122                     {
10123                       gboolean rtl;
10124
10125                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10126                       gtk_cell_area_focus (cell_area,
10127                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10128                     }
10129
10130                   break;
10131                 }
10132             }
10133         }
10134     }
10135 }
10136
10137 static void
10138 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10139                                    gint         count)
10140 {
10141   gint selection_count;
10142   GtkRBTree *cursor_tree = NULL;
10143   GtkRBNode *cursor_node = NULL;
10144   GtkRBTree *new_cursor_tree = NULL;
10145   GtkRBNode *new_cursor_node = NULL;
10146   GtkTreePath *cursor_path = NULL;
10147   gboolean grab_focus = TRUE;
10148   gboolean selectable;
10149   GtkDirectionType direction;
10150   GtkCellArea *cell_area = NULL;
10151   GtkCellRenderer *last_focus_cell = NULL;
10152   GtkTreeIter iter;
10153
10154   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10155     return;
10156
10157   cursor_path = NULL;
10158   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
10159     /* FIXME: we lost the cursor; should we get the first? */
10160     return;
10161
10162   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10163   _gtk_tree_view_find_node (tree_view, cursor_path,
10164                             &cursor_tree, &cursor_node);
10165
10166   if (cursor_tree == NULL)
10167     /* FIXME: we lost the cursor; should we get the first? */
10168     return;
10169
10170   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10171
10172   if (tree_view->priv->focus_column)
10173     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10174
10175   /* If focus stays in the area for this row, then just return for this round */
10176   if (cell_area && (count == -1 || count == 1) &&
10177       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10178     {
10179       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10180                                                tree_view->priv->model,
10181                                                &iter,
10182                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10183                                                cursor_node->children?TRUE:FALSE);
10184
10185       /* Save the last cell that had focus, if we hit the end of the view we'll give
10186        * focus back to it. */
10187       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10188
10189       /* If focus stays in the area, no need to change the cursor row */
10190       if (gtk_cell_area_focus (cell_area, direction))
10191         return;
10192     }
10193
10194   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10195   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10196                                                       cursor_node,
10197                                                       cursor_path);
10198
10199   if (selection_count == 0
10200       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10201       && !tree_view->priv->ctrl_pressed
10202       && selectable)
10203     {
10204       /* Don't move the cursor, but just select the current node */
10205       new_cursor_tree = cursor_tree;
10206       new_cursor_node = cursor_node;
10207     }
10208   else
10209     {
10210       if (count == -1)
10211         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10212                                &new_cursor_tree, &new_cursor_node);
10213       else
10214         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10215                                &new_cursor_tree, &new_cursor_node);
10216     }
10217
10218   gtk_tree_path_free (cursor_path);
10219
10220   if (new_cursor_node)
10221     {
10222       cursor_path = _gtk_tree_view_find_path (tree_view,
10223                                               new_cursor_tree, new_cursor_node);
10224
10225       search_first_focusable_path (tree_view, &cursor_path,
10226                                    (count != -1),
10227                                    &new_cursor_tree,
10228                                    &new_cursor_node);
10229
10230       if (cursor_path)
10231         gtk_tree_path_free (cursor_path);
10232     }
10233
10234   /*
10235    * If the list has only one item and multi-selection is set then select
10236    * the row (if not yet selected).
10237    */
10238   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10239       new_cursor_node == NULL)
10240     {
10241       if (count == -1)
10242         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10243                                &new_cursor_tree, &new_cursor_node);
10244       else
10245         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10246                                &new_cursor_tree, &new_cursor_node);
10247
10248       if (new_cursor_node == NULL
10249           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
10250         {
10251           new_cursor_node = cursor_node;
10252           new_cursor_tree = cursor_tree;
10253         }
10254       else
10255         {
10256           new_cursor_node = NULL;
10257         }
10258     }
10259
10260   if (new_cursor_node)
10261     {
10262       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
10263       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10264       gtk_tree_path_free (cursor_path);
10265
10266       /* Give focus to the area in the new row */
10267       if (cell_area)
10268         gtk_cell_area_focus (cell_area, direction);
10269     }
10270   else
10271     {
10272       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10273
10274       if (!tree_view->priv->shift_pressed)
10275         {
10276           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10277                                           count < 0 ?
10278                                           GTK_DIR_UP : GTK_DIR_DOWN))
10279             {
10280               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10281
10282               if (toplevel)
10283                 gtk_widget_child_focus (toplevel,
10284                                         count < 0 ?
10285                                         GTK_DIR_TAB_BACKWARD :
10286                                         GTK_DIR_TAB_FORWARD);
10287
10288               grab_focus = FALSE;
10289             }
10290         }
10291       else
10292         {
10293           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10294         }
10295
10296       if (cell_area)
10297         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10298     }
10299
10300   if (grab_focus)
10301     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10302 }
10303
10304 static void
10305 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10306                                         gint         count)
10307 {
10308   GtkRBTree *cursor_tree = NULL;
10309   GtkRBNode *cursor_node = NULL;
10310   GtkTreePath *old_cursor_path = NULL;
10311   GtkTreePath *cursor_path = NULL;
10312   GtkRBTree *start_cursor_tree = NULL;
10313   GtkRBNode *start_cursor_node = NULL;
10314   gint y;
10315   gint window_y;
10316   gint vertical_separator;
10317
10318   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10319     return;
10320
10321   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10322     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10323   else
10324     /* This is sorta weird.  Focus in should give us a cursor */
10325     return;
10326
10327   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10328   _gtk_tree_view_find_node (tree_view, old_cursor_path,
10329                             &cursor_tree, &cursor_node);
10330
10331   if (cursor_tree == NULL)
10332     {
10333       /* FIXME: we lost the cursor.  Should we try to get one? */
10334       gtk_tree_path_free (old_cursor_path);
10335       return;
10336     }
10337   g_return_if_fail (cursor_node != NULL);
10338
10339   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10340   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10341   y += tree_view->priv->cursor_offset;
10342   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10343   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10344
10345   if (y >= tree_view->priv->height)
10346     y = tree_view->priv->height - 1;
10347
10348   tree_view->priv->cursor_offset =
10349     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10350                              &cursor_tree, &cursor_node);
10351
10352   if (cursor_tree == NULL)
10353     {
10354       /* FIXME: we lost the cursor.  Should we try to get one? */
10355       gtk_tree_path_free (old_cursor_path);
10356       return;
10357     }
10358
10359   if (tree_view->priv->cursor_offset
10360       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10361     {
10362       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10363                              &cursor_tree, &cursor_node);
10364       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10365     }
10366
10367   y -= tree_view->priv->cursor_offset;
10368   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10369
10370   start_cursor_tree = cursor_tree;
10371   start_cursor_node = cursor_node;
10372
10373   if (! search_first_focusable_path (tree_view, &cursor_path,
10374                                      (count != -1),
10375                                      &cursor_tree, &cursor_node))
10376     {
10377       /* It looks like we reached the end of the view without finding
10378        * a focusable row.  We will step backwards to find the last
10379        * focusable row.
10380        */
10381       cursor_tree = start_cursor_tree;
10382       cursor_node = start_cursor_node;
10383       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10384
10385       search_first_focusable_path (tree_view, &cursor_path,
10386                                    (count == -1),
10387                                    &cursor_tree, &cursor_node);
10388     }
10389
10390   if (!cursor_path)
10391     goto cleanup;
10392
10393   /* update y */
10394   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10395
10396   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10397
10398   y -= window_y;
10399   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10400   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10401   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10402
10403   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10404     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10405
10406   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10407
10408 cleanup:
10409   gtk_tree_path_free (old_cursor_path);
10410   gtk_tree_path_free (cursor_path);
10411 }
10412
10413 static void
10414 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10415                                       gint         count)
10416 {
10417   GtkRBTree *cursor_tree = NULL;
10418   GtkRBNode *cursor_node = NULL;
10419   GtkTreePath *cursor_path = NULL;
10420   GtkTreeViewColumn *column;
10421   GtkTreeIter iter;
10422   GList *list;
10423   gboolean found_column = FALSE;
10424   gboolean rtl;
10425   GtkDirectionType direction;
10426   GtkCellArea     *cell_area;
10427   GtkCellRenderer *last_focus_cell = NULL;
10428   GtkCellArea     *last_focus_area = NULL;
10429
10430   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10431
10432   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10433     return;
10434
10435   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10436     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10437   else
10438     return;
10439
10440   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
10441   if (cursor_tree == NULL)
10442     return;
10443   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10444     {
10445       gtk_tree_path_free (cursor_path);
10446       return;
10447     }
10448   gtk_tree_path_free (cursor_path);
10449
10450   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10451   if (tree_view->priv->focus_column)
10452     {
10453       /* Save the cell/area we are moving focus from, if moving the cursor
10454        * by one step hits the end we'll set focus back here */
10455       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10456       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10457
10458       for (; list; list = (rtl ? list->prev : list->next))
10459         {
10460           if (list->data == tree_view->priv->focus_column)
10461             break;
10462         }
10463     }
10464
10465   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10466
10467   while (list)
10468     {
10469       column = list->data;
10470       if (gtk_tree_view_column_get_visible (column) == FALSE)
10471         goto loop_end;
10472
10473       gtk_tree_view_column_cell_set_cell_data (column,
10474                                                tree_view->priv->model,
10475                                                &iter,
10476                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10477                                                cursor_node->children?TRUE:FALSE);
10478
10479       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10480       if (gtk_cell_area_focus (cell_area, direction))
10481         {
10482           tree_view->priv->focus_column = column;
10483           found_column = TRUE;
10484           break;
10485         }
10486
10487     loop_end:
10488       if (count == 1)
10489         list = rtl ? list->prev : list->next;
10490       else
10491         list = rtl ? list->next : list->prev;
10492     }
10493
10494   if (found_column)
10495     {
10496       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10497         _gtk_tree_view_queue_draw_node (tree_view,
10498                                         cursor_tree,
10499                                         cursor_node,
10500                                         NULL);
10501       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10502       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10503     }
10504   else
10505     {
10506       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10507
10508       if (last_focus_area)
10509         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10510     }
10511
10512   gtk_tree_view_clamp_column_visible (tree_view,
10513                                       tree_view->priv->focus_column, TRUE);
10514 }
10515
10516 static void
10517 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10518                                      gint         count)
10519 {
10520   GtkRBTree *cursor_tree;
10521   GtkRBNode *cursor_node;
10522   GtkTreePath *path;
10523   GtkTreePath *old_path;
10524
10525   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10526     return;
10527
10528   g_return_if_fail (tree_view->priv->tree != NULL);
10529
10530   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10531
10532   cursor_tree = tree_view->priv->tree;
10533   cursor_node = cursor_tree->root;
10534
10535   if (count == -1)
10536     {
10537       while (cursor_node && cursor_node->left != cursor_tree->nil)
10538         cursor_node = cursor_node->left;
10539
10540       /* Now go forward to find the first focusable row. */
10541       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10542       search_first_focusable_path (tree_view, &path,
10543                                    TRUE, &cursor_tree, &cursor_node);
10544     }
10545   else
10546     {
10547       do
10548         {
10549           while (cursor_node && cursor_node->right != cursor_tree->nil)
10550             cursor_node = cursor_node->right;
10551           if (cursor_node->children == NULL)
10552             break;
10553
10554           cursor_tree = cursor_node->children;
10555           cursor_node = cursor_tree->root;
10556         }
10557       while (1);
10558
10559       /* Now go backwards to find last focusable row. */
10560       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10561       search_first_focusable_path (tree_view, &path,
10562                                    FALSE, &cursor_tree, &cursor_node);
10563     }
10564
10565   if (!path)
10566     goto cleanup;
10567
10568   if (gtk_tree_path_compare (old_path, path))
10569     {
10570       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10571       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10572     }
10573   else
10574     {
10575       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10576     }
10577
10578 cleanup:
10579   gtk_tree_path_free (old_path);
10580   gtk_tree_path_free (path);
10581 }
10582
10583 static gboolean
10584 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10585 {
10586   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10587     return FALSE;
10588
10589   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10590     return FALSE;
10591
10592   gtk_tree_selection_select_all (tree_view->priv->selection);
10593
10594   return TRUE;
10595 }
10596
10597 static gboolean
10598 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10599 {
10600   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10601     return FALSE;
10602
10603   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10604     return FALSE;
10605
10606   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10607
10608   return TRUE;
10609 }
10610
10611 static gboolean
10612 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10613                                       gboolean     start_editing)
10614 {
10615   GtkRBTree *new_tree = NULL;
10616   GtkRBNode *new_node = NULL;
10617   GtkRBTree *cursor_tree = NULL;
10618   GtkRBNode *cursor_node = NULL;
10619   GtkTreePath *cursor_path = NULL;
10620   GtkTreeSelectMode mode = 0;
10621
10622   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10623     return FALSE;
10624
10625   if (tree_view->priv->cursor)
10626     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10627
10628   if (cursor_path == NULL)
10629     return FALSE;
10630
10631   _gtk_tree_view_find_node (tree_view, cursor_path,
10632                             &cursor_tree, &cursor_node);
10633
10634   if (cursor_tree == NULL)
10635     {
10636       gtk_tree_path_free (cursor_path);
10637       return FALSE;
10638     }
10639
10640   if (!tree_view->priv->shift_pressed && start_editing &&
10641       tree_view->priv->focus_column)
10642     {
10643       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10644         {
10645           gtk_tree_path_free (cursor_path);
10646           return TRUE;
10647         }
10648     }
10649
10650   if (tree_view->priv->ctrl_pressed)
10651     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10652   if (tree_view->priv->shift_pressed)
10653     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10654
10655   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10656                                             cursor_node,
10657                                             cursor_tree,
10658                                             cursor_path,
10659                                             mode,
10660                                             FALSE);
10661
10662   /* We bail out if the original (tree, node) don't exist anymore after
10663    * handling the selection-changed callback.  We do return TRUE because
10664    * the key press has been handled at this point.
10665    */
10666   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10667
10668   if (cursor_tree != new_tree || cursor_node != new_node)
10669     return FALSE;
10670
10671   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10672
10673   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10674   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10675
10676   if (!tree_view->priv->shift_pressed)
10677     gtk_tree_view_row_activated (tree_view, cursor_path,
10678                                  tree_view->priv->focus_column);
10679
10680   gtk_tree_path_free (cursor_path);
10681
10682   return TRUE;
10683 }
10684
10685 static gboolean
10686 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10687 {
10688   GtkRBTree *new_tree = NULL;
10689   GtkRBNode *new_node = NULL;
10690   GtkRBTree *cursor_tree = NULL;
10691   GtkRBNode *cursor_node = NULL;
10692   GtkTreePath *cursor_path = NULL;
10693
10694   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10695     return FALSE;
10696
10697   cursor_path = NULL;
10698   if (tree_view->priv->cursor)
10699     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10700
10701   if (cursor_path == NULL)
10702     return FALSE;
10703
10704   _gtk_tree_view_find_node (tree_view, cursor_path,
10705                             &cursor_tree, &cursor_node);
10706   if (cursor_tree == NULL)
10707     {
10708       gtk_tree_path_free (cursor_path);
10709       return FALSE;
10710     }
10711
10712   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10713                                             cursor_node,
10714                                             cursor_tree,
10715                                             cursor_path,
10716                                             GTK_TREE_SELECT_MODE_TOGGLE,
10717                                             FALSE);
10718
10719   /* We bail out if the original (tree, node) don't exist anymore after
10720    * handling the selection-changed callback.  We do return TRUE because
10721    * the key press has been handled at this point.
10722    */
10723   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10724
10725   if (cursor_tree != new_tree || cursor_node != new_node)
10726     return FALSE;
10727
10728   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10729
10730   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10731   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10732   gtk_tree_path_free (cursor_path);
10733
10734   return TRUE;
10735 }
10736
10737 static gboolean
10738 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10739                                                gboolean     logical,
10740                                                gboolean     expand,
10741                                                gboolean     open_all)
10742 {
10743   GtkTreePath *cursor_path = NULL;
10744   GtkRBTree *tree;
10745   GtkRBNode *node;
10746
10747   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10748     return FALSE;
10749
10750   cursor_path = NULL;
10751   if (tree_view->priv->cursor)
10752     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10753
10754   if (cursor_path == NULL)
10755     return FALSE;
10756
10757   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10758     return FALSE;
10759
10760   /* Don't handle the event if we aren't an expander */
10761   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10762     return FALSE;
10763
10764   if (!logical
10765       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10766     expand = !expand;
10767
10768   if (expand)
10769     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10770   else
10771     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10772
10773   gtk_tree_path_free (cursor_path);
10774
10775   return TRUE;
10776 }
10777
10778 static gboolean
10779 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10780 {
10781   GtkRBTree *cursor_tree = NULL;
10782   GtkRBNode *cursor_node = NULL;
10783   GtkTreePath *cursor_path = NULL;
10784   GdkModifierType state;
10785
10786   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10787     goto out;
10788
10789   cursor_path = NULL;
10790   if (tree_view->priv->cursor)
10791     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10792
10793   if (cursor_path == NULL)
10794     goto out;
10795
10796   _gtk_tree_view_find_node (tree_view, cursor_path,
10797                             &cursor_tree, &cursor_node);
10798   if (cursor_tree == NULL)
10799     {
10800       gtk_tree_path_free (cursor_path);
10801       goto out;
10802     }
10803
10804   if (cursor_tree->parent_node)
10805     {
10806       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10807       cursor_node = cursor_tree->parent_node;
10808       cursor_tree = cursor_tree->parent_tree;
10809
10810       gtk_tree_path_up (cursor_path);
10811
10812       if (gtk_get_current_event_state (&state))
10813         {
10814           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10815             tree_view->priv->ctrl_pressed = TRUE;
10816         }
10817
10818       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10819       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10820
10821       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10822       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10823       gtk_tree_path_free (cursor_path);
10824
10825       tree_view->priv->ctrl_pressed = FALSE;
10826
10827       return TRUE;
10828     }
10829
10830  out:
10831
10832   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10833   return FALSE;
10834 }
10835
10836 static gboolean
10837 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10838 {
10839   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10840   tree_view->priv->typeselect_flush_timeout = 0;
10841
10842   return FALSE;
10843 }
10844
10845 /* Cut and paste from gtkwindow.c */
10846 static void
10847 send_focus_change (GtkWidget *widget,
10848                    GdkDevice *device,
10849                    gboolean   in)
10850 {
10851   GdkDeviceManager *device_manager;
10852   GList *devices, *d;
10853
10854   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10855   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10856   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10857   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10858
10859   for (d = devices; d; d = d->next)
10860     {
10861       GdkDevice *dev = d->data;
10862       GdkEvent *fevent;
10863       GdkWindow *window;
10864
10865       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10866         continue;
10867
10868       window = gtk_widget_get_window (widget);
10869
10870       /* Skip non-master keyboards that haven't
10871        * selected for events from this window
10872        */
10873       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10874           !gdk_window_get_device_events (window, dev))
10875         continue;
10876
10877       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10878
10879       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10880       fevent->focus_change.window = g_object_ref (window);
10881       fevent->focus_change.in = in;
10882       gdk_event_set_device (fevent, device);
10883
10884       gtk_widget_send_focus_change (widget, fevent);
10885
10886       gdk_event_free (fevent);
10887     }
10888
10889   g_list_free (devices);
10890 }
10891
10892 static void
10893 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10894 {
10895   GtkWidget *frame, *vbox, *toplevel;
10896   GdkScreen *screen;
10897
10898   if (tree_view->priv->search_custom_entry_set)
10899     return;
10900
10901   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10902   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10903
10904    if (tree_view->priv->search_window != NULL)
10905      {
10906        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10907          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10908                                       GTK_WINDOW (tree_view->priv->search_window));
10909        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10910          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10911                                          GTK_WINDOW (tree_view->priv->search_window));
10912
10913        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10914
10915        return;
10916      }
10917
10918   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10919   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10920
10921   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10922     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10923                                  GTK_WINDOW (tree_view->priv->search_window));
10924
10925   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10926                             GDK_WINDOW_TYPE_HINT_UTILITY);
10927   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10928   g_signal_connect (tree_view->priv->search_window, "delete-event",
10929                     G_CALLBACK (gtk_tree_view_search_delete_event),
10930                     tree_view);
10931   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10932                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10933                     tree_view);
10934   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10935                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10936                     tree_view);
10937   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10938                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10939                     tree_view);
10940
10941   frame = gtk_frame_new (NULL);
10942   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10943   gtk_widget_show (frame);
10944   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10945
10946   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10947   gtk_widget_show (vbox);
10948   gtk_container_add (GTK_CONTAINER (frame), vbox);
10949   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10950
10951   /* add entry */
10952   tree_view->priv->search_entry = gtk_entry_new ();
10953   gtk_widget_show (tree_view->priv->search_entry);
10954   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10955                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10956                     tree_view);
10957   g_signal_connect (tree_view->priv->search_entry,
10958                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10959                     tree_view);
10960
10961   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10962                     "preedit-changed",
10963                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10964                     tree_view);
10965
10966   gtk_container_add (GTK_CONTAINER (vbox),
10967                      tree_view->priv->search_entry);
10968
10969   gtk_widget_realize (tree_view->priv->search_entry);
10970 }
10971
10972 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10973  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10974  */
10975 static gboolean
10976 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10977                                              GdkDevice   *device,
10978                                              gboolean     keybinding)
10979 {
10980   /* We only start interactive search if we have focus or the columns
10981    * have focus.  If one of our children have focus, we don't want to
10982    * start the search.
10983    */
10984   GList *list;
10985   gboolean found_focus = FALSE;
10986   GtkWidgetClass *entry_parent_class;
10987
10988   if (!tree_view->priv->enable_search && !keybinding)
10989     return FALSE;
10990
10991   if (tree_view->priv->search_custom_entry_set)
10992     return FALSE;
10993
10994   if (tree_view->priv->search_window != NULL &&
10995       gtk_widget_get_visible (tree_view->priv->search_window))
10996     return TRUE;
10997
10998   for (list = tree_view->priv->columns; list; list = list->next)
10999     {
11000       GtkTreeViewColumn *column;
11001       GtkWidget         *button;
11002
11003       column = list->data;
11004       if (!gtk_tree_view_column_get_visible (column))
11005         continue;
11006
11007       button = gtk_tree_view_column_get_button (column);
11008       if (gtk_widget_has_focus (button))
11009         {
11010           found_focus = TRUE;
11011           break;
11012         }
11013     }
11014
11015   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11016     found_focus = TRUE;
11017
11018   if (!found_focus)
11019     return FALSE;
11020
11021   if (tree_view->priv->search_column < 0)
11022     return FALSE;
11023
11024   gtk_tree_view_ensure_interactive_directory (tree_view);
11025
11026   if (keybinding)
11027     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11028
11029   /* done, show it */
11030   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11031   gtk_widget_show (tree_view->priv->search_window);
11032   if (tree_view->priv->search_entry_changed_id == 0)
11033     {
11034       tree_view->priv->search_entry_changed_id =
11035         g_signal_connect (tree_view->priv->search_entry, "changed",
11036                           G_CALLBACK (gtk_tree_view_search_init),
11037                           tree_view);
11038     }
11039
11040   tree_view->priv->typeselect_flush_timeout =
11041     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11042                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11043                    tree_view);
11044
11045   /* Grab focus will select all the text.  We don't want that to happen, so we
11046    * call the parent instance and bypass the selection change.  This is probably
11047    * really non-kosher. */
11048   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11049   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11050
11051   /* send focus-in event */
11052   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11053
11054   /* search first matching iter */
11055   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11056
11057   return TRUE;
11058 }
11059
11060 static gboolean
11061 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11062 {
11063   return gtk_tree_view_real_start_interactive_search (tree_view,
11064                                                       gtk_get_current_event_device (),
11065                                                       TRUE);
11066 }
11067
11068 /* this function returns the new width of the column being resized given
11069  * the column and x position of the cursor; the x cursor position is passed
11070  * in as a pointer and automagicly corrected if it's beyond min/max limits
11071  */
11072 static gint
11073 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11074                                 gint       i,
11075                                 gint      *x)
11076 {
11077   GtkAllocation allocation;
11078   GtkTreeViewColumn *column;
11079   GtkRequisition button_req;
11080   gint max_width, min_width;
11081   gint width;
11082   gboolean rtl;
11083
11084   /* first translate the x position from widget->window
11085    * to clist->clist_window
11086    */
11087   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11088   column = g_list_nth (tree_view->priv->columns, i)->data;
11089   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11090   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11091
11092   /* Clamp down the value */
11093   min_width = gtk_tree_view_column_get_min_width (column);
11094   if (min_width == -1)
11095     {
11096       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11097       width = MAX (button_req.width, width);
11098     }
11099   else
11100     width = MAX (min_width, width);
11101
11102   max_width = gtk_tree_view_column_get_max_width (column);
11103   if (max_width != -1)
11104     width = MIN (width, max_width);
11105
11106   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11107
11108   return width;
11109 }
11110
11111
11112 /* FIXME this adjust_allocation is a big cut-and-paste from
11113  * GtkCList, needs to be some "official" way to do this
11114  * factored out.
11115  */
11116 typedef struct
11117 {
11118   GdkWindow *window;
11119   int dx;
11120   int dy;
11121 } ScrollData;
11122
11123 /* The window to which widget->window is relative */
11124 #define ALLOCATION_WINDOW(widget)               \
11125    (!gtk_widget_get_has_window (widget) ?                   \
11126     gtk_widget_get_window (widget) :                        \
11127     gdk_window_get_parent (gtk_widget_get_window (widget)))
11128
11129 static void
11130 adjust_allocation_recurse (GtkWidget *widget,
11131                            gpointer   data)
11132 {
11133   GtkAllocation allocation;
11134   ScrollData *scroll_data = data;
11135
11136   /* Need to really size allocate instead of just poking
11137    * into widget->allocation if the widget is not realized.
11138    * FIXME someone figure out why this was.
11139    */
11140   gtk_widget_get_allocation (widget, &allocation);
11141   if (!gtk_widget_get_realized (widget))
11142     {
11143       if (gtk_widget_get_visible (widget))
11144         {
11145           GdkRectangle tmp_rectangle = allocation;
11146           tmp_rectangle.x += scroll_data->dx;
11147           tmp_rectangle.y += scroll_data->dy;
11148
11149           gtk_widget_size_allocate (widget, &tmp_rectangle);
11150         }
11151     }
11152   else
11153     {
11154       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11155         {
11156           allocation.x += scroll_data->dx;
11157           allocation.y += scroll_data->dy;
11158           gtk_widget_set_allocation (widget, &allocation);
11159
11160           if (GTK_IS_CONTAINER (widget))
11161             gtk_container_forall (GTK_CONTAINER (widget),
11162                                   adjust_allocation_recurse,
11163                                   data);
11164         }
11165     }
11166 }
11167
11168 static void
11169 adjust_allocation (GtkWidget *widget,
11170                    int        dx,
11171                    int        dy)
11172 {
11173   ScrollData scroll_data;
11174
11175   if (gtk_widget_get_realized (widget))
11176     scroll_data.window = ALLOCATION_WINDOW (widget);
11177   else
11178     scroll_data.window = NULL;
11179
11180   scroll_data.dx = dx;
11181   scroll_data.dy = dy;
11182
11183   adjust_allocation_recurse (widget, &scroll_data);
11184 }
11185
11186 /* Callbacks */
11187 static void
11188 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11189                                   GtkTreeView   *tree_view)
11190 {
11191   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11192     {
11193       GtkStyleContext *context;
11194       gint dy;
11195
11196       gdk_window_move (tree_view->priv->bin_window,
11197                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11198                        gtk_tree_view_get_effective_header_height (tree_view));
11199       gdk_window_move (tree_view->priv->header_window,
11200                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11201                        0);
11202       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11203       if (dy)
11204         {
11205           update_prelight (tree_view,
11206                            tree_view->priv->event_last_x,
11207                            tree_view->priv->event_last_y - dy);
11208
11209           if (tree_view->priv->edited_column)
11210             {
11211               GList *list;
11212               GtkTreeViewChild *child = NULL;
11213               GtkCellEditable *edit_widget;
11214               GtkCellArea *area;
11215
11216               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11217               edit_widget = gtk_cell_area_get_edit_widget (area);
11218               if (GTK_IS_WIDGET (edit_widget))
11219                 {
11220                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11221
11222                   for (list = tree_view->priv->children; list; list = list->next)
11223                     {
11224                       child = (GtkTreeViewChild *)list->data;
11225                       if (child->widget == GTK_WIDGET (edit_widget))
11226                         {
11227                           child->y += dy;
11228                           break;
11229                         }
11230                     }
11231                 }
11232             }
11233         }
11234       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11235
11236       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11237       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11238
11239       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11240         {
11241           /* update our dy and top_row */
11242           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11243
11244           if (!tree_view->priv->in_top_row_to_dy)
11245             gtk_tree_view_dy_to_top_row (tree_view);
11246         }
11247
11248       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11249       gtk_tree_view_bin_process_updates (tree_view);
11250     }
11251 }
11252
11253 \f
11254
11255 /* Public methods
11256  */
11257
11258 /**
11259  * gtk_tree_view_new:
11260  *
11261  * Creates a new #GtkTreeView widget.
11262  *
11263  * Return value: A newly created #GtkTreeView widget.
11264  **/
11265 GtkWidget *
11266 gtk_tree_view_new (void)
11267 {
11268   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11269 }
11270
11271 /**
11272  * gtk_tree_view_new_with_model:
11273  * @model: the model.
11274  *
11275  * Creates a new #GtkTreeView widget with the model initialized to @model.
11276  *
11277  * Return value: A newly created #GtkTreeView widget.
11278  **/
11279 GtkWidget *
11280 gtk_tree_view_new_with_model (GtkTreeModel *model)
11281 {
11282   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11283 }
11284
11285 /* Public Accessors
11286  */
11287
11288 /**
11289  * gtk_tree_view_get_model:
11290  * @tree_view: a #GtkTreeView
11291  *
11292  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11293  * model is unset.
11294  *
11295  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11296  **/
11297 GtkTreeModel *
11298 gtk_tree_view_get_model (GtkTreeView *tree_view)
11299 {
11300   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11301
11302   return tree_view->priv->model;
11303 }
11304
11305 /**
11306  * gtk_tree_view_set_model:
11307  * @tree_view: A #GtkTreeNode.
11308  * @model: (allow-none): The model.
11309  *
11310  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11311  * set, it will remove it before setting the new model.  If @model is %NULL,
11312  * then it will unset the old model.
11313  **/
11314 void
11315 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11316                          GtkTreeModel *model)
11317 {
11318   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11319   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11320
11321   if (model == tree_view->priv->model)
11322     return;
11323
11324   if (tree_view->priv->scroll_to_path)
11325     {
11326       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11327       tree_view->priv->scroll_to_path = NULL;
11328     }
11329
11330   if (tree_view->priv->model)
11331     {
11332       GList *tmplist = tree_view->priv->columns;
11333       GtkStyleContext *context;
11334
11335       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11336       gtk_tree_view_stop_editing (tree_view, TRUE);
11337
11338       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11339       gtk_style_context_cancel_animations (context, NULL);
11340
11341       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11342                                             gtk_tree_view_row_changed,
11343                                             tree_view);
11344       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11345                                             gtk_tree_view_row_inserted,
11346                                             tree_view);
11347       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11348                                             gtk_tree_view_row_has_child_toggled,
11349                                             tree_view);
11350       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11351                                             gtk_tree_view_row_deleted,
11352                                             tree_view);
11353       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11354                                             gtk_tree_view_rows_reordered,
11355                                             tree_view);
11356
11357       for (; tmplist; tmplist = tmplist->next)
11358         _gtk_tree_view_column_unset_model (tmplist->data,
11359                                            tree_view->priv->model);
11360
11361       if (tree_view->priv->tree)
11362         gtk_tree_view_free_rbtree (tree_view);
11363
11364       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11365       tree_view->priv->drag_dest_row = NULL;
11366       gtk_tree_row_reference_free (tree_view->priv->cursor);
11367       tree_view->priv->cursor = NULL;
11368       gtk_tree_row_reference_free (tree_view->priv->anchor);
11369       tree_view->priv->anchor = NULL;
11370       gtk_tree_row_reference_free (tree_view->priv->top_row);
11371       tree_view->priv->top_row = NULL;
11372       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11373       tree_view->priv->scroll_to_path = NULL;
11374
11375       tree_view->priv->scroll_to_column = NULL;
11376
11377       g_object_unref (tree_view->priv->model);
11378
11379       tree_view->priv->search_column = -1;
11380       tree_view->priv->fixed_height_check = 0;
11381       tree_view->priv->fixed_height = -1;
11382       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11383       tree_view->priv->last_button_x = -1;
11384       tree_view->priv->last_button_y = -1;
11385     }
11386
11387   tree_view->priv->model = model;
11388
11389   if (tree_view->priv->model)
11390     {
11391       gint i;
11392       GtkTreePath *path;
11393       GtkTreeIter iter;
11394       GtkTreeModelFlags flags;
11395
11396       if (tree_view->priv->search_column == -1)
11397         {
11398           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11399             {
11400               GType type = gtk_tree_model_get_column_type (model, i);
11401
11402               if (g_value_type_transformable (type, G_TYPE_STRING))
11403                 {
11404                   tree_view->priv->search_column = i;
11405                   break;
11406                 }
11407             }
11408         }
11409
11410       g_object_ref (tree_view->priv->model);
11411       g_signal_connect (tree_view->priv->model,
11412                         "row-changed",
11413                         G_CALLBACK (gtk_tree_view_row_changed),
11414                         tree_view);
11415       g_signal_connect (tree_view->priv->model,
11416                         "row-inserted",
11417                         G_CALLBACK (gtk_tree_view_row_inserted),
11418                         tree_view);
11419       g_signal_connect (tree_view->priv->model,
11420                         "row-has-child-toggled",
11421                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11422                         tree_view);
11423       g_signal_connect (tree_view->priv->model,
11424                         "row-deleted",
11425                         G_CALLBACK (gtk_tree_view_row_deleted),
11426                         tree_view);
11427       g_signal_connect (tree_view->priv->model,
11428                         "rows-reordered",
11429                         G_CALLBACK (gtk_tree_view_rows_reordered),
11430                         tree_view);
11431
11432       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11433       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11434         tree_view->priv->is_list = TRUE;
11435       else
11436         tree_view->priv->is_list = FALSE;
11437
11438       path = gtk_tree_path_new_first ();
11439       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11440         {
11441           tree_view->priv->tree = _gtk_rbtree_new ();
11442           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11443         }
11444       gtk_tree_path_free (path);
11445
11446       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11447       install_presize_handler (tree_view);
11448     }
11449
11450   g_object_notify (G_OBJECT (tree_view), "model");
11451
11452   if (tree_view->priv->selection)
11453   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11454
11455   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11456     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11457 }
11458
11459 /**
11460  * gtk_tree_view_get_selection:
11461  * @tree_view: A #GtkTreeView.
11462  *
11463  * Gets the #GtkTreeSelection associated with @tree_view.
11464  *
11465  * Return value: (transfer none): A #GtkTreeSelection object.
11466  **/
11467 GtkTreeSelection *
11468 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11469 {
11470   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11471
11472   return tree_view->priv->selection;
11473 }
11474
11475 /**
11476  * gtk_tree_view_get_hadjustment:
11477  * @tree_view: A #GtkTreeView
11478  *
11479  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11480  *
11481  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11482  *     if none is currently being used.
11483  *
11484  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11485  **/
11486 GtkAdjustment *
11487 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11488 {
11489   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11490
11491   return tree_view->priv->hadjustment;
11492 }
11493
11494 /**
11495  * gtk_tree_view_set_hadjustment:
11496  * @tree_view: A #GtkTreeView
11497  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11498  *
11499  * Sets the #GtkAdjustment for the current horizontal aspect.
11500  *
11501  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11502  **/
11503 void
11504 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11505                                GtkAdjustment *adjustment)
11506 {
11507   GtkTreeViewPrivate *priv = tree_view->priv;
11508
11509   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11510   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11511
11512   if (adjustment && priv->hadjustment == adjustment)
11513     return;
11514
11515   if (priv->hadjustment != NULL)
11516     {
11517       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11518                                             gtk_tree_view_adjustment_changed,
11519                                             tree_view);
11520       g_object_unref (priv->hadjustment);
11521     }
11522
11523   if (adjustment == NULL)
11524     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11525                                      0.0, 0.0, 0.0);
11526
11527   g_signal_connect (adjustment, "value-changed",
11528                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11529   priv->hadjustment = g_object_ref_sink (adjustment);
11530   /* FIXME: Adjustment should probably be populated here with fresh values, but
11531    * internal details are too complicated for me to decipher right now.
11532    */
11533   gtk_tree_view_adjustment_changed (NULL, tree_view);
11534
11535   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11536 }
11537
11538 /**
11539  * gtk_tree_view_get_vadjustment:
11540  * @tree_view: A #GtkTreeView
11541  *
11542  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11543  *
11544  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11545  *     if none is currently being used.
11546  *
11547  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11548  **/
11549 GtkAdjustment *
11550 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11551 {
11552   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11553
11554   return tree_view->priv->vadjustment;
11555 }
11556
11557 /**
11558  * gtk_tree_view_set_vadjustment:
11559  * @tree_view: A #GtkTreeView
11560  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11561  *
11562  * Sets the #GtkAdjustment for the current vertical aspect.
11563  *
11564  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11565  **/
11566 void
11567 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11568                                GtkAdjustment *adjustment)
11569 {
11570   GtkTreeViewPrivate *priv = tree_view->priv;
11571
11572   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11573   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11574
11575   if (adjustment && priv->vadjustment == adjustment)
11576     return;
11577
11578   if (priv->vadjustment != NULL)
11579     {
11580       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11581                                             gtk_tree_view_adjustment_changed,
11582                                             tree_view);
11583       g_object_unref (priv->vadjustment);
11584     }
11585
11586   if (adjustment == NULL)
11587     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11588                                      0.0, 0.0, 0.0);
11589
11590   g_signal_connect (adjustment, "value-changed",
11591                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11592   priv->vadjustment = g_object_ref_sink (adjustment);
11593   /* FIXME: Adjustment should probably be populated here with fresh values, but
11594    * internal details are too complicated for me to decipher right now.
11595    */
11596   gtk_tree_view_adjustment_changed (NULL, tree_view);
11597   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11598 }
11599
11600 /* Column and header operations */
11601
11602 /**
11603  * gtk_tree_view_get_headers_visible:
11604  * @tree_view: A #GtkTreeView.
11605  *
11606  * Returns %TRUE if the headers on the @tree_view are visible.
11607  *
11608  * Return value: Whether the headers are visible or not.
11609  **/
11610 gboolean
11611 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11612 {
11613   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11614
11615   return tree_view->priv->headers_visible;
11616 }
11617
11618 /**
11619  * gtk_tree_view_set_headers_visible:
11620  * @tree_view: A #GtkTreeView.
11621  * @headers_visible: %TRUE if the headers are visible
11622  *
11623  * Sets the visibility state of the headers.
11624  **/
11625 void
11626 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11627                                    gboolean     headers_visible)
11628 {
11629   gint x, y;
11630   GList *list;
11631   GtkTreeViewColumn *column;
11632   GtkAllocation allocation;
11633   GtkWidget *button;
11634
11635   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11636
11637   headers_visible = !! headers_visible;
11638
11639   if (tree_view->priv->headers_visible == headers_visible)
11640     return;
11641
11642   tree_view->priv->headers_visible = headers_visible == TRUE;
11643
11644   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11645     {
11646       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11647       if (headers_visible)
11648         {
11649           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11650           gdk_window_move_resize (tree_view->priv->bin_window,
11651                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11652                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11653
11654           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11655             gtk_tree_view_map_buttons (tree_view);
11656         }
11657       else
11658         {
11659           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11660
11661           for (list = tree_view->priv->columns; list; list = list->next)
11662             {
11663               column = list->data;
11664               button = gtk_tree_view_column_get_button (column);
11665
11666               gtk_widget_hide (button);
11667               gtk_widget_unmap (button);
11668             }
11669           gdk_window_hide (tree_view->priv->header_window);
11670         }
11671     }
11672
11673   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11674   gtk_adjustment_configure (tree_view->priv->vadjustment,
11675                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11676                             0,
11677                             tree_view->priv->height,
11678                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11679                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11680                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11681
11682   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11683
11684   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11685 }
11686
11687 /**
11688  * gtk_tree_view_columns_autosize:
11689  * @tree_view: A #GtkTreeView.
11690  *
11691  * Resizes all columns to their optimal width. Only works after the
11692  * treeview has been realized.
11693  **/
11694 void
11695 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11696 {
11697   gboolean dirty = FALSE;
11698   GList *list;
11699   GtkTreeViewColumn *column;
11700
11701   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11702
11703   for (list = tree_view->priv->columns; list; list = list->next)
11704     {
11705       column = list->data;
11706       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11707         continue;
11708       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11709       dirty = TRUE;
11710     }
11711
11712   if (dirty)
11713     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11714 }
11715
11716 /**
11717  * gtk_tree_view_set_headers_clickable:
11718  * @tree_view: A #GtkTreeView.
11719  * @setting: %TRUE if the columns are clickable.
11720  *
11721  * Allow the column title buttons to be clicked.
11722  **/
11723 void
11724 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11725                                      gboolean   setting)
11726 {
11727   GList *list;
11728
11729   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11730
11731   for (list = tree_view->priv->columns; list; list = list->next)
11732     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11733
11734   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11735 }
11736
11737
11738 /**
11739  * gtk_tree_view_get_headers_clickable:
11740  * @tree_view: A #GtkTreeView.
11741  *
11742  * Returns whether all header columns are clickable.
11743  *
11744  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11745  *
11746  * Since: 2.10
11747  **/
11748 gboolean
11749 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11750 {
11751   GList *list;
11752
11753   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11754
11755   for (list = tree_view->priv->columns; list; list = list->next)
11756     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11757       return FALSE;
11758
11759   return TRUE;
11760 }
11761
11762 /**
11763  * gtk_tree_view_set_rules_hint
11764  * @tree_view: a #GtkTreeView
11765  * @setting: %TRUE if the tree requires reading across rows
11766  *
11767  * This function tells GTK+ that the user interface for your
11768  * application requires users to read across tree rows and associate
11769  * cells with one another. By default, GTK+ will then render the tree
11770  * with alternating row colors. Do <emphasis>not</emphasis> use it
11771  * just because you prefer the appearance of the ruled tree; that's a
11772  * question for the theme. Some themes will draw tree rows in
11773  * alternating colors even when rules are turned off, and users who
11774  * prefer that appearance all the time can choose those themes. You
11775  * should call this function only as a <emphasis>semantic</emphasis>
11776  * hint to the theme engine that your tree makes alternating colors
11777  * useful from a functional standpoint (since it has lots of columns,
11778  * generally).
11779  *
11780  **/
11781 void
11782 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11783                               gboolean      setting)
11784 {
11785   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11786
11787   setting = setting != FALSE;
11788
11789   if (tree_view->priv->has_rules != setting)
11790     {
11791       tree_view->priv->has_rules = setting;
11792       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11793     }
11794
11795   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11796 }
11797
11798 /**
11799  * gtk_tree_view_get_rules_hint
11800  * @tree_view: a #GtkTreeView
11801  *
11802  * Gets the setting set by gtk_tree_view_set_rules_hint().
11803  *
11804  * Return value: %TRUE if rules are useful for the user of this tree
11805  **/
11806 gboolean
11807 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11808 {
11809   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11810
11811   return tree_view->priv->has_rules;
11812 }
11813
11814 /* Public Column functions
11815  */
11816
11817 /**
11818  * gtk_tree_view_append_column:
11819  * @tree_view: A #GtkTreeView.
11820  * @column: The #GtkTreeViewColumn to add.
11821  *
11822  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11823  * mode enabled, then @column must have its "sizing" property set to be
11824  * GTK_TREE_VIEW_COLUMN_FIXED.
11825  *
11826  * Return value: The number of columns in @tree_view after appending.
11827  **/
11828 gint
11829 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11830                              GtkTreeViewColumn *column)
11831 {
11832   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11833   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11834   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11835
11836   return gtk_tree_view_insert_column (tree_view, column, -1);
11837 }
11838
11839 void
11840 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11841 {
11842   GList *columns;
11843
11844   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11845     {
11846       GtkTreeViewColumn *column = columns->data;
11847       GtkWidget *header_widget;
11848
11849       if (gtk_tree_view_column_get_visible (column))
11850         continue;
11851
11852       header_widget = gtk_tree_view_column_get_widget (column);
11853
11854       if (!header_widget)
11855         header_widget = gtk_tree_view_column_get_button (column);
11856
11857       gtk_widget_reset_style (header_widget);
11858     }
11859 }
11860
11861
11862 /**
11863  * gtk_tree_view_remove_column:
11864  * @tree_view: A #GtkTreeView.
11865  * @column: The #GtkTreeViewColumn to remove.
11866  *
11867  * Removes @column from @tree_view.
11868  *
11869  * Return value: The number of columns in @tree_view after removing.
11870  **/
11871 gint
11872 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11873                              GtkTreeViewColumn *column)
11874 {
11875   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11876   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11877   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11878
11879   if (tree_view->priv->focus_column == column)
11880     tree_view->priv->focus_column = NULL;
11881
11882   if (tree_view->priv->edited_column == column)
11883     {
11884       gtk_tree_view_stop_editing (tree_view, TRUE);
11885
11886       /* no need to, but just to be sure ... */
11887       tree_view->priv->edited_column = NULL;
11888     }
11889
11890   if (tree_view->priv->expander_column == column)
11891     tree_view->priv->expander_column = NULL;
11892
11893   g_signal_handlers_disconnect_by_func (column,
11894                                         G_CALLBACK (column_sizing_notify),
11895                                         tree_view);
11896
11897   _gtk_tree_view_column_unset_tree_view (column);
11898
11899   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11900   tree_view->priv->n_columns--;
11901
11902   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11903     {
11904       GList *list;
11905
11906       _gtk_tree_view_column_unrealize_button (column);
11907       for (list = tree_view->priv->columns; list; list = list->next)
11908         {
11909           GtkTreeViewColumn *tmp_column;
11910
11911           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11912           if (gtk_tree_view_column_get_visible (tmp_column))
11913             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11914         }
11915
11916       if (tree_view->priv->n_columns == 0 &&
11917           gtk_tree_view_get_headers_visible (tree_view))
11918         gdk_window_hide (tree_view->priv->header_window);
11919
11920       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11921     }
11922
11923   _gtk_tree_view_reset_header_styles (tree_view);
11924
11925   g_object_unref (column);
11926   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11927
11928   return tree_view->priv->n_columns;
11929 }
11930
11931 /**
11932  * gtk_tree_view_insert_column:
11933  * @tree_view: A #GtkTreeView.
11934  * @column: The #GtkTreeViewColumn to be inserted.
11935  * @position: The position to insert @column in.
11936  *
11937  * This inserts the @column into the @tree_view at @position.  If @position is
11938  * -1, then the column is inserted at the end. If @tree_view has
11939  * "fixed_height" mode enabled, then @column must have its "sizing" property
11940  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11941  *
11942  * Return value: The number of columns in @tree_view after insertion.
11943  **/
11944 gint
11945 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11946                              GtkTreeViewColumn *column,
11947                              gint               position)
11948 {
11949   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11950   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11951   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11952
11953   if (tree_view->priv->fixed_height_mode)
11954     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11955                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11956
11957   g_object_ref_sink (column);
11958
11959   if (tree_view->priv->n_columns == 0 &&
11960       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11961       gtk_tree_view_get_headers_visible (tree_view))
11962     {
11963       gdk_window_show (tree_view->priv->header_window);
11964     }
11965
11966   g_signal_connect (column, "notify::sizing",
11967                     G_CALLBACK (column_sizing_notify), tree_view);
11968
11969   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11970                                             column, position);
11971   tree_view->priv->n_columns++;
11972
11973   _gtk_tree_view_column_set_tree_view (column, tree_view);
11974
11975   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11976     {
11977       GList *list;
11978
11979       _gtk_tree_view_column_realize_button (column);
11980
11981       for (list = tree_view->priv->columns; list; list = list->next)
11982         {
11983           column = GTK_TREE_VIEW_COLUMN (list->data);
11984           if (gtk_tree_view_column_get_visible (column))
11985             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11986         }
11987       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11988     }
11989
11990   _gtk_tree_view_reset_header_styles (tree_view);
11991   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11992
11993   return tree_view->priv->n_columns;
11994 }
11995
11996 /**
11997  * gtk_tree_view_insert_column_with_attributes:
11998  * @tree_view: A #GtkTreeView
11999  * @position: The position to insert the new column in.
12000  * @title: The title to set the header to.
12001  * @cell: The #GtkCellRenderer.
12002  * @Varargs: A %NULL-terminated list of attributes.
12003  *
12004  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12005  * @position.  If @position is -1, then the newly created column is inserted at
12006  * the end.  The column is initialized with the attributes given. If @tree_view
12007  * has "fixed_height" mode enabled, then the new column will have its sizing
12008  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12009  *
12010  * Return value: The number of columns in @tree_view after insertion.
12011  **/
12012 gint
12013 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12014                                              gint             position,
12015                                              const gchar     *title,
12016                                              GtkCellRenderer *cell,
12017                                              ...)
12018 {
12019   GtkTreeViewColumn *column;
12020   gchar *attribute;
12021   va_list args;
12022   gint column_id;
12023
12024   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12025
12026   column = gtk_tree_view_column_new ();
12027   if (tree_view->priv->fixed_height_mode)
12028     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12029
12030   gtk_tree_view_column_set_title (column, title);
12031   gtk_tree_view_column_pack_start (column, cell, TRUE);
12032
12033   va_start (args, cell);
12034
12035   attribute = va_arg (args, gchar *);
12036
12037   while (attribute != NULL)
12038     {
12039       column_id = va_arg (args, gint);
12040       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12041       attribute = va_arg (args, gchar *);
12042     }
12043
12044   va_end (args);
12045
12046   gtk_tree_view_insert_column (tree_view, column, position);
12047
12048   return tree_view->priv->n_columns;
12049 }
12050
12051 /**
12052  * gtk_tree_view_insert_column_with_data_func:
12053  * @tree_view: a #GtkTreeView
12054  * @position: Position to insert, -1 for append
12055  * @title: column title
12056  * @cell: cell renderer for column
12057  * @func: function to set attributes of cell renderer
12058  * @data: data for @func
12059  * @dnotify: destroy notifier for @data
12060  *
12061  * Convenience function that inserts a new column into the #GtkTreeView
12062  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12063  * attributes (normally using data from the model). See also
12064  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12065  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12066  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12067  *
12068  * Return value: number of columns in the tree view post-insert
12069  **/
12070 gint
12071 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12072                                              gint                       position,
12073                                              const gchar               *title,
12074                                              GtkCellRenderer           *cell,
12075                                              GtkTreeCellDataFunc        func,
12076                                              gpointer                   data,
12077                                              GDestroyNotify             dnotify)
12078 {
12079   GtkTreeViewColumn *column;
12080
12081   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12082
12083   column = gtk_tree_view_column_new ();
12084   if (tree_view->priv->fixed_height_mode)
12085     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12086
12087   gtk_tree_view_column_set_title (column, title);
12088   gtk_tree_view_column_pack_start (column, cell, TRUE);
12089   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12090
12091   gtk_tree_view_insert_column (tree_view, column, position);
12092
12093   return tree_view->priv->n_columns;
12094 }
12095
12096 /**
12097  * gtk_tree_view_get_column:
12098  * @tree_view: A #GtkTreeView.
12099  * @n: The position of the column, counting from 0.
12100  *
12101  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12102  *
12103  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12104  *     position is outside the range of columns.
12105  **/
12106 GtkTreeViewColumn *
12107 gtk_tree_view_get_column (GtkTreeView *tree_view,
12108                           gint         n)
12109 {
12110   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12111
12112   if (n < 0 || n >= tree_view->priv->n_columns)
12113     return NULL;
12114
12115   if (tree_view->priv->columns == NULL)
12116     return NULL;
12117
12118   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12119 }
12120
12121 /**
12122  * gtk_tree_view_get_columns:
12123  * @tree_view: A #GtkTreeView
12124  *
12125  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12126  * The returned list must be freed with g_list_free ().
12127  *
12128  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12129  **/
12130 GList *
12131 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12132 {
12133   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12134
12135   return g_list_copy (tree_view->priv->columns);
12136 }
12137
12138 /**
12139  * gtk_tree_view_move_column_after:
12140  * @tree_view: A #GtkTreeView
12141  * @column: The #GtkTreeViewColumn to be moved.
12142  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12143  *
12144  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12145  * @column is placed in the first position.
12146  **/
12147 void
12148 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12149                                  GtkTreeViewColumn *column,
12150                                  GtkTreeViewColumn *base_column)
12151 {
12152   GList *column_list_el, *base_el = NULL;
12153
12154   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12155
12156   column_list_el = g_list_find (tree_view->priv->columns, column);
12157   g_return_if_fail (column_list_el != NULL);
12158
12159   if (base_column)
12160     {
12161       base_el = g_list_find (tree_view->priv->columns, base_column);
12162       g_return_if_fail (base_el != NULL);
12163     }
12164
12165   if (column_list_el->prev == base_el)
12166     return;
12167
12168   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12169   if (base_el == NULL)
12170     {
12171       column_list_el->prev = NULL;
12172       column_list_el->next = tree_view->priv->columns;
12173       if (column_list_el->next)
12174         column_list_el->next->prev = column_list_el;
12175       tree_view->priv->columns = column_list_el;
12176     }
12177   else
12178     {
12179       column_list_el->prev = base_el;
12180       column_list_el->next = base_el->next;
12181       if (column_list_el->next)
12182         column_list_el->next->prev = column_list_el;
12183       base_el->next = column_list_el;
12184     }
12185
12186   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12187     {
12188       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12189       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12190     }
12191
12192   _gtk_tree_view_reset_header_styles (tree_view);
12193   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12194 }
12195
12196 /**
12197  * gtk_tree_view_set_expander_column:
12198  * @tree_view: A #GtkTreeView
12199  * @column: %NULL, or the column to draw the expander arrow at.
12200  *
12201  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12202  * If @column is %NULL, then the expander arrow is always at the first
12203  * visible column.
12204  *
12205  * If you do not want expander arrow to appear in your tree, set the
12206  * expander column to a hidden column.
12207  **/
12208 void
12209 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12210                                    GtkTreeViewColumn *column)
12211 {
12212   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12213   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12214
12215   if (tree_view->priv->expander_column != column)
12216     {
12217       GList *list;
12218
12219       if (column)
12220         {
12221           /* Confirm that column is in tree_view */
12222           for (list = tree_view->priv->columns; list; list = list->next)
12223             if (list->data == column)
12224               break;
12225           g_return_if_fail (list != NULL);
12226         }
12227
12228       tree_view->priv->expander_column = column;
12229       g_object_notify (G_OBJECT (tree_view), "expander-column");
12230     }
12231 }
12232
12233 /**
12234  * gtk_tree_view_get_expander_column:
12235  * @tree_view: A #GtkTreeView
12236  *
12237  * Returns the column that is the current expander column.
12238  * This column has the expander arrow drawn next to it.
12239  *
12240  * Return value: (transfer none): The expander column.
12241  **/
12242 GtkTreeViewColumn *
12243 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12244 {
12245   GList *list;
12246
12247   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12248
12249   for (list = tree_view->priv->columns; list; list = list->next)
12250     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12251       return (GtkTreeViewColumn *) list->data;
12252   return NULL;
12253 }
12254
12255
12256 /**
12257  * gtk_tree_view_set_column_drag_function:
12258  * @tree_view: A #GtkTreeView.
12259  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12260  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12261  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12262  *
12263  * Sets a user function for determining where a column may be dropped when
12264  * dragged.  This function is called on every column pair in turn at the
12265  * beginning of a column drag to determine where a drop can take place.  The
12266  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12267  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12268  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12269  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12270  * @tree_view reverts to the default behavior of allowing all columns to be
12271  * dropped everywhere.
12272  **/
12273 void
12274 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12275                                         GtkTreeViewColumnDropFunc  func,
12276                                         gpointer                   user_data,
12277                                         GDestroyNotify             destroy)
12278 {
12279   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12280
12281   if (tree_view->priv->column_drop_func_data_destroy)
12282     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12283
12284   tree_view->priv->column_drop_func = func;
12285   tree_view->priv->column_drop_func_data = user_data;
12286   tree_view->priv->column_drop_func_data_destroy = destroy;
12287 }
12288
12289 /**
12290  * gtk_tree_view_scroll_to_point:
12291  * @tree_view: a #GtkTreeView
12292  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12293  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12294  *
12295  * Scrolls the tree view such that the top-left corner of the visible
12296  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12297  * in tree coordinates.  The @tree_view must be realized before
12298  * this function is called.  If it isn't, you probably want to be
12299  * using gtk_tree_view_scroll_to_cell().
12300  *
12301  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12302  **/
12303 void
12304 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12305                                gint         tree_x,
12306                                gint         tree_y)
12307 {
12308   GtkAdjustment *hadj;
12309   GtkAdjustment *vadj;
12310
12311   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12312   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12313
12314   hadj = tree_view->priv->hadjustment;
12315   vadj = tree_view->priv->vadjustment;
12316
12317   if (tree_x != -1)
12318     gtk_adjustment_set_value (hadj, tree_x);
12319   if (tree_y != -1)
12320     gtk_adjustment_set_value (vadj, tree_y);
12321 }
12322
12323 /**
12324  * gtk_tree_view_scroll_to_cell:
12325  * @tree_view: A #GtkTreeView.
12326  * @path: (allow-none): The path of the row to move to, or %NULL.
12327  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12328  * @use_align: whether to use alignment arguments, or %FALSE.
12329  * @row_align: The vertical alignment of the row specified by @path.
12330  * @col_align: The horizontal alignment of the column specified by @column.
12331  *
12332  * Moves the alignments of @tree_view to the position specified by @column and
12333  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12334  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12335  * or @path need to be non-%NULL.  @row_align determines where the row is
12336  * placed, and @col_align determines where @column is placed.  Both are expected
12337  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12338  * right/bottom alignment, 0.5 means center.
12339  *
12340  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12341  * tree does the minimum amount of work to scroll the cell onto the screen.
12342  * This means that the cell will be scrolled to the edge closest to its current
12343  * position.  If the cell is currently visible on the screen, nothing is done.
12344  *
12345  * This function only works if the model is set, and @path is a valid row on the
12346  * model.  If the model changes before the @tree_view is realized, the centered
12347  * path will be modified to reflect this change.
12348  **/
12349 void
12350 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12351                               GtkTreePath       *path,
12352                               GtkTreeViewColumn *column,
12353                               gboolean           use_align,
12354                               gfloat             row_align,
12355                               gfloat             col_align)
12356 {
12357   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12358   g_return_if_fail (tree_view->priv->model != NULL);
12359   g_return_if_fail (tree_view->priv->tree != NULL);
12360   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12361   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12362   g_return_if_fail (path != NULL || column != NULL);
12363
12364 #if 0
12365   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12366            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12367 #endif
12368   row_align = CLAMP (row_align, 0.0, 1.0);
12369   col_align = CLAMP (col_align, 0.0, 1.0);
12370
12371
12372   /* Note: Despite the benefits that come from having one code path for the
12373    * scrolling code, we short-circuit validate_visible_area's immplementation as
12374    * it is much slower than just going to the point.
12375    */
12376   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12377       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12378       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12379       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12380     {
12381       if (tree_view->priv->scroll_to_path)
12382         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12383
12384       tree_view->priv->scroll_to_path = NULL;
12385       tree_view->priv->scroll_to_column = NULL;
12386
12387       if (path)
12388         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12389       if (column)
12390         tree_view->priv->scroll_to_column = column;
12391       tree_view->priv->scroll_to_use_align = use_align;
12392       tree_view->priv->scroll_to_row_align = row_align;
12393       tree_view->priv->scroll_to_col_align = col_align;
12394
12395       install_presize_handler (tree_view);
12396     }
12397   else
12398     {
12399       GdkRectangle cell_rect;
12400       GdkRectangle vis_rect;
12401       gint dest_x, dest_y;
12402
12403       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12404       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12405
12406       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12407
12408       dest_x = vis_rect.x;
12409       dest_y = vis_rect.y;
12410
12411       if (column)
12412         {
12413           if (use_align)
12414             {
12415               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12416             }
12417           else
12418             {
12419               if (cell_rect.x < vis_rect.x)
12420                 dest_x = cell_rect.x;
12421               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12422                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12423             }
12424         }
12425
12426       if (path)
12427         {
12428           if (use_align)
12429             {
12430               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12431               dest_y = MAX (dest_y, 0);
12432             }
12433           else
12434             {
12435               if (cell_rect.y < vis_rect.y)
12436                 dest_y = cell_rect.y;
12437               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12438                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12439             }
12440         }
12441
12442       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12443     }
12444 }
12445
12446 /**
12447  * gtk_tree_view_row_activated:
12448  * @tree_view: A #GtkTreeView
12449  * @path: The #GtkTreePath to be activated.
12450  * @column: The #GtkTreeViewColumn to be activated.
12451  *
12452  * Activates the cell determined by @path and @column.
12453  **/
12454 void
12455 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12456                              GtkTreePath       *path,
12457                              GtkTreeViewColumn *column)
12458 {
12459   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12460
12461   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12462 }
12463
12464
12465 static void
12466 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12467                                           GtkRBNode *node,
12468                                           gpointer   data)
12469 {
12470   GtkTreeView *tree_view = data;
12471
12472   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12473       node->children)
12474     {
12475       GtkTreePath *path;
12476       GtkTreeIter iter;
12477
12478       path = _gtk_tree_view_find_path (tree_view, tree, node);
12479       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12480
12481       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12482
12483       gtk_tree_path_free (path);
12484     }
12485
12486   if (node->children)
12487     _gtk_rbtree_traverse (node->children,
12488                           node->children->root,
12489                           G_PRE_ORDER,
12490                           gtk_tree_view_expand_all_emission_helper,
12491                           tree_view);
12492 }
12493
12494 /**
12495  * gtk_tree_view_expand_all:
12496  * @tree_view: A #GtkTreeView.
12497  *
12498  * Recursively expands all nodes in the @tree_view.
12499  **/
12500 void
12501 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12502 {
12503   GtkTreePath *path;
12504   GtkRBTree *tree;
12505   GtkRBNode *node;
12506
12507   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12508
12509   if (tree_view->priv->tree == NULL)
12510     return;
12511
12512   path = gtk_tree_path_new_first ();
12513   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12514
12515   while (node)
12516     {
12517       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12518       node = _gtk_rbtree_next (tree, node);
12519       gtk_tree_path_next (path);
12520   }
12521
12522   gtk_tree_path_free (path);
12523 }
12524
12525 /**
12526  * gtk_tree_view_collapse_all:
12527  * @tree_view: A #GtkTreeView.
12528  *
12529  * Recursively collapses all visible, expanded nodes in @tree_view.
12530  **/
12531 void
12532 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12533 {
12534   GtkRBTree *tree;
12535   GtkRBNode *node;
12536   GtkTreePath *path;
12537   gint *indices;
12538
12539   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12540
12541   if (tree_view->priv->tree == NULL)
12542     return;
12543
12544   path = gtk_tree_path_new ();
12545   gtk_tree_path_down (path);
12546   indices = gtk_tree_path_get_indices (path);
12547
12548   tree = tree_view->priv->tree;
12549   node = tree->root;
12550   while (node && node->left != tree->nil)
12551     node = node->left;
12552
12553   while (node)
12554     {
12555       if (node->children)
12556         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12557       indices[0]++;
12558       node = _gtk_rbtree_next (tree, node);
12559     }
12560
12561   gtk_tree_path_free (path);
12562 }
12563
12564 /**
12565  * gtk_tree_view_expand_to_path:
12566  * @tree_view: A #GtkTreeView.
12567  * @path: path to a row.
12568  *
12569  * Expands the row at @path. This will also expand all parent rows of
12570  * @path as necessary.
12571  *
12572  * Since: 2.2
12573  **/
12574 void
12575 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12576                               GtkTreePath *path)
12577 {
12578   gint i, depth;
12579   gint *indices;
12580   GtkTreePath *tmp;
12581
12582   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12583   g_return_if_fail (path != NULL);
12584
12585   depth = gtk_tree_path_get_depth (path);
12586   indices = gtk_tree_path_get_indices (path);
12587
12588   tmp = gtk_tree_path_new ();
12589   g_return_if_fail (tmp != NULL);
12590
12591   for (i = 0; i < depth; i++)
12592     {
12593       gtk_tree_path_append_index (tmp, indices[i]);
12594       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12595     }
12596
12597   gtk_tree_path_free (tmp);
12598 }
12599
12600 /* FIXME the bool return values for expand_row and collapse_row are
12601  * not analagous; they should be TRUE if the row had children and
12602  * was not already in the requested state.
12603  */
12604
12605
12606 static gboolean
12607 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12608                                GtkTreePath *path,
12609                                GtkRBTree   *tree,
12610                                GtkRBNode   *node,
12611                                gboolean     open_all,
12612                                gboolean     animate)
12613 {
12614   GtkTreeIter iter;
12615   GtkTreeIter temp;
12616   gboolean expand;
12617
12618   if (animate)
12619     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12620                   "gtk-enable-animations", &animate,
12621                   NULL);
12622
12623   remove_auto_expand_timeout (tree_view);
12624
12625   if (node->children && !open_all)
12626     return FALSE;
12627
12628   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12629     return FALSE;
12630
12631   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12632   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12633     return FALSE;
12634
12635
12636    if (node->children && open_all)
12637     {
12638       gboolean retval = FALSE;
12639       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12640
12641       gtk_tree_path_append_index (tmp_path, 0);
12642       tree = node->children;
12643       node = tree->root;
12644       while (node->left != tree->nil)
12645         node = node->left;
12646       /* try to expand the children */
12647       do
12648         {
12649          gboolean t;
12650          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12651                                             TRUE, animate);
12652          if (t)
12653            retval = TRUE;
12654
12655          gtk_tree_path_next (tmp_path);
12656          node = _gtk_rbtree_next (tree, node);
12657        }
12658       while (node != NULL);
12659
12660       gtk_tree_path_free (tmp_path);
12661
12662       return retval;
12663     }
12664
12665   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12666
12667   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12668     return FALSE;
12669
12670   if (expand)
12671     return FALSE;
12672
12673   node->children = _gtk_rbtree_new ();
12674   node->children->parent_tree = tree;
12675   node->children->parent_node = node;
12676
12677   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12678
12679   gtk_tree_view_build_tree (tree_view,
12680                             node->children,
12681                             &temp,
12682                             gtk_tree_path_get_depth (path) + 1,
12683                             open_all);
12684
12685   if (animate)
12686     {
12687       GtkStyleContext *context;
12688
12689       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12690
12691       gtk_style_context_save (context);
12692       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12693
12694       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12695                                              node, GTK_STATE_ACTIVE, TRUE);
12696
12697       _gtk_style_context_invalidate_animation_areas (context);
12698       gtk_style_context_restore (context);
12699     }
12700
12701   install_presize_handler (tree_view);
12702
12703   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12704   if (open_all && node->children)
12705     {
12706       _gtk_rbtree_traverse (node->children,
12707                             node->children->root,
12708                             G_PRE_ORDER,
12709                             gtk_tree_view_expand_all_emission_helper,
12710                             tree_view);
12711     }
12712   return TRUE;
12713 }
12714
12715
12716 /**
12717  * gtk_tree_view_expand_row:
12718  * @tree_view: a #GtkTreeView
12719  * @path: path to a row
12720  * @open_all: whether to recursively expand, or just expand immediate children
12721  *
12722  * Opens the row so its children are visible.
12723  *
12724  * Return value: %TRUE if the row existed and had children
12725  **/
12726 gboolean
12727 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12728                           GtkTreePath *path,
12729                           gboolean     open_all)
12730 {
12731   GtkRBTree *tree;
12732   GtkRBNode *node;
12733
12734   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12735   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12736   g_return_val_if_fail (path != NULL, FALSE);
12737
12738   if (_gtk_tree_view_find_node (tree_view,
12739                                 path,
12740                                 &tree,
12741                                 &node))
12742     return FALSE;
12743
12744   if (tree != NULL)
12745     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12746   else
12747     return FALSE;
12748 }
12749
12750 static gboolean
12751 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12752                                  GtkTreePath *path,
12753                                  GtkRBTree   *tree,
12754                                  GtkRBNode   *node,
12755                                  gboolean     animate)
12756 {
12757   GtkTreeIter iter;
12758   GtkTreeIter children;
12759   gboolean collapse;
12760   gint x, y;
12761   GList *list;
12762   GdkWindow *child, *parent;
12763
12764   if (animate)
12765     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12766                   "gtk-enable-animations", &animate,
12767                   NULL);
12768
12769   remove_auto_expand_timeout (tree_view);
12770
12771   if (node->children == NULL)
12772     return FALSE;
12773   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12774
12775   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12776
12777   if (collapse)
12778     return FALSE;
12779
12780   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12781    * a chance to prelight the correct node below */
12782
12783   if (tree_view->priv->prelight_tree)
12784     {
12785       GtkRBTree *parent_tree;
12786       GtkRBNode *parent_node;
12787
12788       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12789       parent_node = tree_view->priv->prelight_tree->parent_node;
12790       while (parent_tree)
12791         {
12792           if (parent_tree == tree && parent_node == node)
12793             {
12794               ensure_unprelighted (tree_view);
12795               break;
12796             }
12797           parent_node = parent_tree->parent_node;
12798           parent_tree = parent_tree->parent_tree;
12799         }
12800     }
12801
12802   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12803
12804   for (list = tree_view->priv->columns; list; list = list->next)
12805     {
12806       GtkTreeViewColumn *column = list->data;
12807
12808       if (gtk_tree_view_column_get_visible (column) == FALSE)
12809         continue;
12810       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12811         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12812     }
12813
12814   if (tree_view->priv->destroy_count_func)
12815     {
12816       GtkTreePath *child_path;
12817       gint child_count = 0;
12818       child_path = gtk_tree_path_copy (path);
12819       gtk_tree_path_down (child_path);
12820       if (node->children)
12821         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12822       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12823       gtk_tree_path_free (child_path);
12824     }
12825
12826   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12827     {
12828       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12829
12830       if (gtk_tree_path_is_ancestor (path, cursor_path))
12831         {
12832           gtk_tree_row_reference_free (tree_view->priv->cursor);
12833           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12834                                                                       tree_view->priv->model,
12835                                                                       path);
12836         }
12837       gtk_tree_path_free (cursor_path);
12838     }
12839
12840   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12841     {
12842       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12843       if (gtk_tree_path_is_ancestor (path, anchor_path))
12844         {
12845           gtk_tree_row_reference_free (tree_view->priv->anchor);
12846           tree_view->priv->anchor = NULL;
12847         }
12848       gtk_tree_path_free (anchor_path);
12849     }
12850
12851   /* Stop a pending double click */
12852   tree_view->priv->last_button_x = -1;
12853   tree_view->priv->last_button_y = -1;
12854
12855   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12856     {
12857       _gtk_rbtree_remove (node->children);
12858       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12859     }
12860   else
12861     _gtk_rbtree_remove (node->children);
12862
12863   if (animate)
12864     {
12865       GtkStyleContext *context;
12866
12867       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12868
12869       gtk_style_context_save (context);
12870       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12871
12872       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12873                                              node, GTK_STATE_ACTIVE, FALSE);
12874
12875       _gtk_style_context_invalidate_animation_areas (context);
12876       gtk_style_context_restore (context);
12877     }
12878
12879   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12880     {
12881       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12882     }
12883
12884   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12885
12886   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12887     {
12888       /* now that we've collapsed all rows, we want to try to set the prelight
12889        * again. To do this, we fake a motion event and send it to ourselves. */
12890
12891       child = tree_view->priv->bin_window;
12892       parent = gdk_window_get_parent (child);
12893
12894       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12895         {
12896           GdkEventMotion event;
12897           gint child_x, child_y;
12898
12899           gdk_window_get_position (child, &child_x, &child_y);
12900
12901           event.window = tree_view->priv->bin_window;
12902           event.x = x - child_x;
12903           event.y = y - child_y;
12904
12905           /* despite the fact this isn't a real event, I'm almost positive it will
12906            * never trigger a drag event.  maybe_drag is the only function that uses
12907            * more than just event.x and event.y. */
12908           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12909         }
12910     }
12911
12912   return TRUE;
12913 }
12914
12915 /**
12916  * gtk_tree_view_collapse_row:
12917  * @tree_view: a #GtkTreeView
12918  * @path: path to a row in the @tree_view
12919  *
12920  * Collapses a row (hides its child rows, if they exist).
12921  *
12922  * Return value: %TRUE if the row was collapsed.
12923  **/
12924 gboolean
12925 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12926                             GtkTreePath *path)
12927 {
12928   GtkRBTree *tree;
12929   GtkRBNode *node;
12930
12931   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12932   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12933   g_return_val_if_fail (path != NULL, FALSE);
12934
12935   if (_gtk_tree_view_find_node (tree_view,
12936                                 path,
12937                                 &tree,
12938                                 &node))
12939     return FALSE;
12940
12941   if (tree == NULL || node->children == NULL)
12942     return FALSE;
12943
12944   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12945 }
12946
12947 static void
12948 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12949                                         GtkRBTree              *tree,
12950                                         GtkTreePath            *path,
12951                                         GtkTreeViewMappingFunc  func,
12952                                         gpointer                user_data)
12953 {
12954   GtkRBNode *node;
12955
12956   if (tree == NULL || tree->root == NULL)
12957     return;
12958
12959   node = tree->root;
12960
12961   while (node && node->left != tree->nil)
12962     node = node->left;
12963
12964   while (node)
12965     {
12966       if (node->children)
12967         {
12968           (* func) (tree_view, path, user_data);
12969           gtk_tree_path_down (path);
12970           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12971           gtk_tree_path_up (path);
12972         }
12973       gtk_tree_path_next (path);
12974       node = _gtk_rbtree_next (tree, node);
12975     }
12976 }
12977
12978 /**
12979  * gtk_tree_view_map_expanded_rows:
12980  * @tree_view: A #GtkTreeView
12981  * @func: (scope call): A function to be called
12982  * @data: User data to be passed to the function.
12983  *
12984  * Calls @func on all expanded rows.
12985  **/
12986 void
12987 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12988                                  GtkTreeViewMappingFunc  func,
12989                                  gpointer                user_data)
12990 {
12991   GtkTreePath *path;
12992
12993   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12994   g_return_if_fail (func != NULL);
12995
12996   path = gtk_tree_path_new_first ();
12997
12998   gtk_tree_view_map_expanded_rows_helper (tree_view,
12999                                           tree_view->priv->tree,
13000                                           path, func, user_data);
13001
13002   gtk_tree_path_free (path);
13003 }
13004
13005 /**
13006  * gtk_tree_view_row_expanded:
13007  * @tree_view: A #GtkTreeView.
13008  * @path: A #GtkTreePath to test expansion state.
13009  *
13010  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13011  *
13012  * Return value: %TRUE if #path is expanded.
13013  **/
13014 gboolean
13015 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13016                             GtkTreePath *path)
13017 {
13018   GtkRBTree *tree;
13019   GtkRBNode *node;
13020
13021   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13022   g_return_val_if_fail (path != NULL, FALSE);
13023
13024   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13025
13026   if (node == NULL)
13027     return FALSE;
13028
13029   return (node->children != NULL);
13030 }
13031
13032 /**
13033  * gtk_tree_view_get_reorderable:
13034  * @tree_view: a #GtkTreeView
13035  *
13036  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13037  * gtk_tree_view_set_reorderable().
13038  *
13039  * Return value: %TRUE if the tree can be reordered.
13040  **/
13041 gboolean
13042 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13043 {
13044   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13045
13046   return tree_view->priv->reorderable;
13047 }
13048
13049 /**
13050  * gtk_tree_view_set_reorderable:
13051  * @tree_view: A #GtkTreeView.
13052  * @reorderable: %TRUE, if the tree can be reordered.
13053  *
13054  * This function is a convenience function to allow you to reorder
13055  * models that support the #GtkDragSourceIface and the
13056  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13057  * these.  If @reorderable is %TRUE, then the user can reorder the
13058  * model by dragging and dropping rows. The developer can listen to
13059  * these changes by connecting to the model's row_inserted and
13060  * row_deleted signals. The reordering is implemented by setting up
13061  * the tree view as a drag source and destination. Therefore, drag and
13062  * drop can not be used in a reorderable view for any other purpose.
13063  *
13064  * This function does not give you any degree of control over the order -- any
13065  * reordering is allowed.  If more control is needed, you should probably
13066  * handle drag and drop manually.
13067  **/
13068 void
13069 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13070                                gboolean     reorderable)
13071 {
13072   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13073
13074   reorderable = reorderable != FALSE;
13075
13076   if (tree_view->priv->reorderable == reorderable)
13077     return;
13078
13079   if (reorderable)
13080     {
13081       const GtkTargetEntry row_targets[] = {
13082         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13083       };
13084
13085       gtk_tree_view_enable_model_drag_source (tree_view,
13086                                               GDK_BUTTON1_MASK,
13087                                               row_targets,
13088                                               G_N_ELEMENTS (row_targets),
13089                                               GDK_ACTION_MOVE);
13090       gtk_tree_view_enable_model_drag_dest (tree_view,
13091                                             row_targets,
13092                                             G_N_ELEMENTS (row_targets),
13093                                             GDK_ACTION_MOVE);
13094     }
13095   else
13096     {
13097       gtk_tree_view_unset_rows_drag_source (tree_view);
13098       gtk_tree_view_unset_rows_drag_dest (tree_view);
13099     }
13100
13101   tree_view->priv->reorderable = reorderable;
13102
13103   g_object_notify (G_OBJECT (tree_view), "reorderable");
13104 }
13105
13106 static void
13107 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13108                                GtkTreePath     *path,
13109                                gboolean         clear_and_select,
13110                                gboolean         clamp_node)
13111 {
13112   GtkRBTree *tree = NULL;
13113   GtkRBNode *node = NULL;
13114
13115   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13116     {
13117       GtkTreePath *cursor_path;
13118       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13119       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
13120       gtk_tree_path_free (cursor_path);
13121     }
13122
13123   gtk_tree_row_reference_free (tree_view->priv->cursor);
13124   tree_view->priv->cursor = NULL;
13125
13126   /* One cannot set the cursor on a separator.   Also, if
13127    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13128    * before finding the tree and node belonging to path.  The
13129    * path maps to a non-existing path and we will silently bail out.
13130    * We unset tree and node to avoid further processing.
13131    */
13132   if (!row_is_separator (tree_view, NULL, path)
13133       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
13134     {
13135       tree_view->priv->cursor =
13136           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
13137                                             tree_view->priv->model,
13138                                             path);
13139     }
13140   else
13141     {
13142       tree = NULL;
13143       node = NULL;
13144     }
13145
13146   if (tree != NULL)
13147     {
13148       GtkRBTree *new_tree = NULL;
13149       GtkRBNode *new_node = NULL;
13150
13151       if (clear_and_select && !tree_view->priv->ctrl_pressed)
13152         {
13153           GtkTreeSelectMode mode = 0;
13154
13155           if (tree_view->priv->ctrl_pressed)
13156             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
13157           if (tree_view->priv->shift_pressed)
13158             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13159
13160           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13161                                                     node, tree, path, mode,
13162                                                     FALSE);
13163         }
13164
13165       /* We have to re-find tree and node here again, somebody might have
13166        * cleared the node or the whole tree in the GtkTreeSelection::changed
13167        * callback. If the nodes differ we bail out here.
13168        */
13169       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13170
13171       if (tree != new_tree || node != new_node)
13172         return;
13173
13174       if (clamp_node)
13175         {
13176           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
13177           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13178         }
13179     }
13180
13181   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13182 }
13183
13184 /**
13185  * gtk_tree_view_get_cursor:
13186  * @tree_view: A #GtkTreeView
13187  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13188  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13189  *
13190  * Fills in @path and @focus_column with the current path and focus column.  If
13191  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13192  * currently has focus, then *@focus_column will be %NULL.
13193  *
13194  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13195  * you are done with it.
13196  **/
13197 void
13198 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13199                           GtkTreePath       **path,
13200                           GtkTreeViewColumn **focus_column)
13201 {
13202   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13203
13204   if (path)
13205     {
13206       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13207         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13208       else
13209         *path = NULL;
13210     }
13211
13212   if (focus_column)
13213     {
13214       *focus_column = tree_view->priv->focus_column;
13215     }
13216 }
13217
13218 /**
13219  * gtk_tree_view_set_cursor:
13220  * @tree_view: A #GtkTreeView
13221  * @path: A #GtkTreePath
13222  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13223  * @start_editing: %TRUE if the specified cell should start being edited.
13224  *
13225  * Sets the current keyboard focus to be at @path, and selects it.  This is
13226  * useful when you want to focus the user's attention on a particular row.  If
13227  * @focus_column is not %NULL, then focus is given to the column specified by
13228  * it. Additionally, if @focus_column is specified, and @start_editing is
13229  * %TRUE, then editing should be started in the specified cell.
13230  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13231  * in order to give keyboard focus to the widget.  Please note that editing
13232  * can only happen when the widget is realized.
13233  *
13234  * If @path is invalid for @model, the current cursor (if any) will be unset
13235  * and the function will return without failing.
13236  **/
13237 void
13238 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13239                           GtkTreePath       *path,
13240                           GtkTreeViewColumn *focus_column,
13241                           gboolean           start_editing)
13242 {
13243   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13244                                     NULL, start_editing);
13245 }
13246
13247 /**
13248  * gtk_tree_view_set_cursor_on_cell:
13249  * @tree_view: A #GtkTreeView
13250  * @path: A #GtkTreePath
13251  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13252  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13253  * @start_editing: %TRUE if the specified cell should start being edited.
13254  *
13255  * Sets the current keyboard focus to be at @path, and selects it.  This is
13256  * useful when you want to focus the user's attention on a particular row.  If
13257  * @focus_column is not %NULL, then focus is given to the column specified by
13258  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13259  * contains 2 or more editable or activatable cells, then focus is given to
13260  * the cell specified by @focus_cell. Additionally, if @focus_column is
13261  * specified, and @start_editing is %TRUE, then editing should be started in
13262  * the specified cell.  This function is often followed by
13263  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13264  * widget.  Please note that editing can only happen when the widget is
13265  * realized.
13266  *
13267  * If @path is invalid for @model, the current cursor (if any) will be unset
13268  * and the function will return without failing.
13269  *
13270  * Since: 2.2
13271  **/
13272 void
13273 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13274                                   GtkTreePath       *path,
13275                                   GtkTreeViewColumn *focus_column,
13276                                   GtkCellRenderer   *focus_cell,
13277                                   gboolean           start_editing)
13278 {
13279   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13280   g_return_if_fail (path != NULL);
13281   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13282
13283   if (!tree_view->priv->model)
13284     return;
13285
13286   if (focus_cell)
13287     {
13288       g_return_if_fail (focus_column);
13289       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13290     }
13291
13292   /* cancel the current editing, if it exists */
13293   if (tree_view->priv->edited_column &&
13294       gtk_cell_area_get_edit_widget
13295       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13296     gtk_tree_view_stop_editing (tree_view, TRUE);
13297
13298   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
13299
13300   if (focus_column &&
13301       gtk_tree_view_column_get_visible (focus_column))
13302     {
13303       GList *list;
13304       gboolean column_in_tree = FALSE;
13305
13306       for (list = tree_view->priv->columns; list; list = list->next)
13307         if (list->data == focus_column)
13308           {
13309             column_in_tree = TRUE;
13310             break;
13311           }
13312       g_return_if_fail (column_in_tree);
13313       tree_view->priv->focus_column = focus_column;
13314       if (focus_cell)
13315         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13316       if (start_editing)
13317         gtk_tree_view_start_editing (tree_view, path, TRUE);
13318     }
13319 }
13320
13321 /**
13322  * gtk_tree_view_get_bin_window:
13323  * @tree_view: A #GtkTreeView
13324  *
13325  * Returns the window that @tree_view renders to.
13326  * This is used primarily to compare to <literal>event->window</literal>
13327  * to confirm that the event on @tree_view is on the right window.
13328  *
13329  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13330  *     hasn't been realized yet
13331  **/
13332 GdkWindow *
13333 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13334 {
13335   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13336
13337   return tree_view->priv->bin_window;
13338 }
13339
13340 /**
13341  * gtk_tree_view_get_path_at_pos:
13342  * @tree_view: A #GtkTreeView.
13343  * @x: The x position to be identified (relative to bin_window).
13344  * @y: The y position to be identified (relative to bin_window).
13345  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13346  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13347  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13348  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13349  *
13350  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13351  * (please see gtk_tree_view_get_bin_window()).
13352  * That is, @x and @y are relative to an events coordinates. @x and @y must
13353  * come from an event on the @tree_view only where <literal>event->window ==
13354  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13355  * things like popup menus. If @path is non-%NULL, then it will be filled
13356  * with the #GtkTreePath at that point.  This path should be freed with
13357  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13358  * with the column at that point.  @cell_x and @cell_y return the coordinates
13359  * relative to the cell background (i.e. the @background_area passed to
13360  * gtk_cell_renderer_render()).  This function is only meaningful if
13361  * @tree_view is realized.  Therefore this function will always return %FALSE
13362  * if @tree_view is not realized or does not have a model.
13363  *
13364  * For converting widget coordinates (eg. the ones you get from
13365  * GtkWidget::query-tooltip), please see
13366  * gtk_tree_view_convert_widget_to_bin_window_coords().
13367  *
13368  * Return value: %TRUE if a row exists at that coordinate.
13369  **/
13370 gboolean
13371 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13372                                gint                x,
13373                                gint                y,
13374                                GtkTreePath       **path,
13375                                GtkTreeViewColumn **column,
13376                                gint               *cell_x,
13377                                gint               *cell_y)
13378 {
13379   GtkRBTree *tree;
13380   GtkRBNode *node;
13381   gint y_offset;
13382
13383   g_return_val_if_fail (tree_view != NULL, FALSE);
13384
13385   if (path)
13386     *path = NULL;
13387   if (column)
13388     *column = NULL;
13389
13390   if (tree_view->priv->bin_window == NULL)
13391     return FALSE;
13392
13393   if (tree_view->priv->tree == NULL)
13394     return FALSE;
13395
13396   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13397     return FALSE;
13398
13399   if (x < 0 || y < 0)
13400     return FALSE;
13401
13402   if (column || cell_x)
13403     {
13404       GtkTreeViewColumn *tmp_column;
13405       GtkTreeViewColumn *last_column = NULL;
13406       GList *list;
13407       gint remaining_x = x;
13408       gboolean found = FALSE;
13409       gboolean rtl;
13410       gint width;
13411
13412       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13413       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13414            list;
13415            list = (rtl ? list->prev : list->next))
13416         {
13417           tmp_column = list->data;
13418
13419           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13420             continue;
13421
13422           last_column = tmp_column;
13423           width = gtk_tree_view_column_get_width (tmp_column);
13424           if (remaining_x <= width)
13425             {
13426               found = TRUE;
13427
13428               if (column)
13429                 *column = tmp_column;
13430
13431               if (cell_x)
13432                 *cell_x = remaining_x;
13433
13434               break;
13435             }
13436           remaining_x -= width;
13437         }
13438
13439       /* If found is FALSE and there is a last_column, then it the remainder
13440        * space is in that area
13441        */
13442       if (!found)
13443         {
13444           if (last_column)
13445             {
13446               if (column)
13447                 *column = last_column;
13448
13449               if (cell_x)
13450                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13451             }
13452           else
13453             {
13454               return FALSE;
13455             }
13456         }
13457     }
13458
13459   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13460                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13461                                       &tree, &node);
13462
13463   if (tree == NULL)
13464     return FALSE;
13465
13466   if (cell_y)
13467     *cell_y = y_offset;
13468
13469   if (path)
13470     *path = _gtk_tree_view_find_path (tree_view, tree, node);
13471
13472   return TRUE;
13473 }
13474
13475
13476 static inline gint
13477 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13478                                     GtkRBNode   *node,
13479                                     gint         vertical_separator)
13480 {
13481   int height;
13482
13483   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13484    * i.e. just the cells, no spacing.
13485    *
13486    * The cell area height is at least expander_size - vertical_separator.
13487    * For regular nodes, the height is then at least expander_size. We should
13488    * be able to enforce the expander_size minimum here, because this
13489    * function will not be called for irregular (e.g. separator) rows.
13490    */
13491   height = gtk_tree_view_get_row_height (tree_view, node);
13492   if (height < tree_view->priv->expander_size)
13493     height = tree_view->priv->expander_size;
13494
13495   return height - vertical_separator;
13496 }
13497
13498 static inline gint
13499 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13500                                       GtkRBTree   *tree,
13501                                       GtkRBNode   *node,
13502                                       gint         vertical_separator)
13503 {
13504   int offset;
13505
13506   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13507   offset += vertical_separator / 2;
13508
13509   return offset;
13510 }
13511
13512 /**
13513  * gtk_tree_view_get_cell_area:
13514  * @tree_view: a #GtkTreeView
13515  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13516  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13517  * @rect: (out): rectangle to fill with cell rect
13518  *
13519  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13520  * row specified by @path and the column specified by @column.  If @path is
13521  * %NULL, or points to a path not currently displayed, the @y and @height fields
13522  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13523  * fields will be filled with 0.  The sum of all cell rects does not cover the
13524  * entire tree; there are extra pixels in between rows, for example. The
13525  * returned rectangle is equivalent to the @cell_area passed to
13526  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13527  * realized.
13528  **/
13529 void
13530 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13531                              GtkTreePath        *path,
13532                              GtkTreeViewColumn  *column,
13533                              GdkRectangle       *rect)
13534 {
13535   GtkAllocation allocation;
13536   GtkRBTree *tree = NULL;
13537   GtkRBNode *node = NULL;
13538   gint vertical_separator;
13539   gint horizontal_separator;
13540
13541   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13542   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13543   g_return_if_fail (rect != NULL);
13544   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13545   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13546
13547   gtk_widget_style_get (GTK_WIDGET (tree_view),
13548                         "vertical-separator", &vertical_separator,
13549                         "horizontal-separator", &horizontal_separator,
13550                         NULL);
13551
13552   rect->x = 0;
13553   rect->y = 0;
13554   rect->width = 0;
13555   rect->height = 0;
13556
13557   if (column)
13558     {
13559       gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
13560       rect->x = allocation.x + horizontal_separator/2;
13561       rect->width = allocation.width - horizontal_separator;
13562     }
13563
13564   if (path)
13565     {
13566       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13567
13568       /* Get vertical coords */
13569       if ((!ret && tree == NULL) || ret)
13570         return;
13571
13572       if (row_is_separator (tree_view, NULL, path))
13573         {
13574           /* There isn't really a "cell area" for separator, so we
13575            * return the y, height values for background area instead.
13576            */
13577           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13578           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13579         }
13580       else
13581         {
13582           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13583                                                           vertical_separator);
13584           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13585                                                              vertical_separator);
13586         }
13587
13588       if (column &&
13589           gtk_tree_view_is_expander_column (tree_view, column))
13590         {
13591           gint depth = gtk_tree_path_get_depth (path);
13592           gboolean rtl;
13593
13594           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13595
13596           if (!rtl)
13597             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13598           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13599
13600           if (gtk_tree_view_draw_expanders (tree_view))
13601             {
13602               if (!rtl)
13603                 rect->x += depth * tree_view->priv->expander_size;
13604               rect->width -= depth * tree_view->priv->expander_size;
13605             }
13606
13607           rect->width = MAX (rect->width, 0);
13608         }
13609     }
13610 }
13611
13612 static inline gint
13613 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13614                               GtkRBNode   *node)
13615 {
13616   int height;
13617
13618   /* The "background" areas of all rows/cells add up to cover the entire tree.
13619    * The background includes all inter-row and inter-cell spacing.
13620    *
13621    * If the row pointed at by node does not have a height set, we default
13622    * to expander_size, which is the minimum height for regular nodes.
13623    * Non-regular nodes (e.g. separators) can have a height set smaller
13624    * than expander_size and should not be overruled here.
13625    */
13626   height = GTK_RBNODE_GET_HEIGHT (node);
13627   if (height <= 0)
13628     height = tree_view->priv->expander_size;
13629
13630   return height;
13631 }
13632
13633 static inline gint
13634 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13635                                 GtkRBTree   *tree,
13636                                 GtkRBNode   *node)
13637 {
13638   int offset;
13639
13640   offset = _gtk_rbtree_node_find_offset (tree, node);
13641
13642   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13643 }
13644
13645 /**
13646  * gtk_tree_view_get_background_area:
13647  * @tree_view: a #GtkTreeView
13648  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13649  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13650  * @rect: (out): rectangle to fill with cell background rect
13651  *
13652  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13653  * row specified by @path and the column specified by @column.  If @path is
13654  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13655  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13656  * fields will be filled with 0.  The returned rectangle is equivalent to the
13657  * @background_area passed to gtk_cell_renderer_render().  These background
13658  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13659  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13660  * itself, excluding surrounding borders and the tree expander area.
13661  *
13662  **/
13663 void
13664 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13665                                    GtkTreePath        *path,
13666                                    GtkTreeViewColumn  *column,
13667                                    GdkRectangle       *rect)
13668 {
13669   GtkRBTree *tree = NULL;
13670   GtkRBNode *node = NULL;
13671
13672   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13673   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13674   g_return_if_fail (rect != NULL);
13675
13676   rect->x = 0;
13677   rect->y = 0;
13678   rect->width = 0;
13679   rect->height = 0;
13680
13681   if (path)
13682     {
13683       /* Get vertical coords */
13684
13685       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13686           tree == NULL)
13687         return;
13688
13689       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13690       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13691     }
13692
13693   if (column)
13694     {
13695       gint x2 = 0;
13696
13697       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13698       rect->width = x2 - rect->x;
13699     }
13700 }
13701
13702 /**
13703  * gtk_tree_view_get_visible_rect:
13704  * @tree_view: a #GtkTreeView
13705  * @visible_rect: (out): rectangle to fill
13706  *
13707  * Fills @visible_rect with the currently-visible region of the
13708  * buffer, in tree coordinates. Convert to bin_window coordinates with
13709  * gtk_tree_view_convert_tree_to_bin_window_coords().
13710  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13711  * scrollable area of the tree.
13712  **/
13713 void
13714 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13715                                 GdkRectangle *visible_rect)
13716 {
13717   GtkAllocation allocation;
13718   GtkWidget *widget;
13719
13720   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13721
13722   widget = GTK_WIDGET (tree_view);
13723
13724   if (visible_rect)
13725     {
13726       gtk_widget_get_allocation (widget, &allocation);
13727       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13728       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13729       visible_rect->width = allocation.width;
13730       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13731     }
13732 }
13733
13734 /**
13735  * gtk_tree_view_convert_widget_to_tree_coords:
13736  * @tree_view: a #GtkTreeView
13737  * @wx: X coordinate relative to the widget
13738  * @wy: Y coordinate relative to the widget
13739  * @tx: (out): return location for tree X coordinate
13740  * @ty: (out): return location for tree Y coordinate
13741  *
13742  * Converts widget coordinates to coordinates for the
13743  * tree (the full scrollable area of the tree).
13744  *
13745  * Since: 2.12
13746  **/
13747 void
13748 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13749                                              gint         wx,
13750                                              gint         wy,
13751                                              gint        *tx,
13752                                              gint        *ty)
13753 {
13754   gint x, y;
13755
13756   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13757
13758   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13759                                                      wx, wy,
13760                                                      &x, &y);
13761   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13762                                                    x, y,
13763                                                    tx, ty);
13764 }
13765
13766 /**
13767  * gtk_tree_view_convert_tree_to_widget_coords:
13768  * @tree_view: a #GtkTreeView
13769  * @tx: X coordinate relative to the tree
13770  * @ty: Y coordinate relative to the tree
13771  * @wx: (out): return location for widget X coordinate
13772  * @wy: (out): return location for widget Y coordinate
13773  *
13774  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13775  * to widget coordinates.
13776  *
13777  * Since: 2.12
13778  **/
13779 void
13780 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13781                                              gint         tx,
13782                                              gint         ty,
13783                                              gint        *wx,
13784                                              gint        *wy)
13785 {
13786   gint x, y;
13787
13788   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13789
13790   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13791                                                    tx, ty,
13792                                                    &x, &y);
13793   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13794                                                      x, y,
13795                                                      wx, wy);
13796 }
13797
13798 /**
13799  * gtk_tree_view_convert_widget_to_bin_window_coords:
13800  * @tree_view: a #GtkTreeView
13801  * @wx: X coordinate relative to the widget
13802  * @wy: Y coordinate relative to the widget
13803  * @bx: (out): return location for bin_window X coordinate
13804  * @by: (out): return location for bin_window Y coordinate
13805  *
13806  * Converts widget coordinates to coordinates for the bin_window
13807  * (see gtk_tree_view_get_bin_window()).
13808  *
13809  * Since: 2.12
13810  **/
13811 void
13812 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13813                                                    gint         wx,
13814                                                    gint         wy,
13815                                                    gint        *bx,
13816                                                    gint        *by)
13817 {
13818   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13819
13820   if (bx)
13821     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13822   if (by)
13823     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13824 }
13825
13826 /**
13827  * gtk_tree_view_convert_bin_window_to_widget_coords:
13828  * @tree_view: a #GtkTreeView
13829  * @bx: bin_window X coordinate
13830  * @by: bin_window Y coordinate
13831  * @wx: (out): return location for widget X coordinate
13832  * @wy: (out): return location for widget Y coordinate
13833  *
13834  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13835  * to widget relative coordinates.
13836  *
13837  * Since: 2.12
13838  **/
13839 void
13840 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13841                                                    gint         bx,
13842                                                    gint         by,
13843                                                    gint        *wx,
13844                                                    gint        *wy)
13845 {
13846   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13847
13848   if (wx)
13849     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13850   if (wy)
13851     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13852 }
13853
13854 /**
13855  * gtk_tree_view_convert_tree_to_bin_window_coords:
13856  * @tree_view: a #GtkTreeView
13857  * @tx: tree X coordinate
13858  * @ty: tree Y coordinate
13859  * @bx: (out): return location for X coordinate relative to bin_window
13860  * @by: (out): return location for Y coordinate relative to bin_window
13861  *
13862  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13863  * to bin_window coordinates.
13864  *
13865  * Since: 2.12
13866  **/
13867 void
13868 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13869                                                  gint         tx,
13870                                                  gint         ty,
13871                                                  gint        *bx,
13872                                                  gint        *by)
13873 {
13874   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13875
13876   if (bx)
13877     *bx = tx;
13878   if (by)
13879     *by = ty - tree_view->priv->dy;
13880 }
13881
13882 /**
13883  * gtk_tree_view_convert_bin_window_to_tree_coords:
13884  * @tree_view: a #GtkTreeView
13885  * @bx: X coordinate relative to bin_window
13886  * @by: Y coordinate relative to bin_window
13887  * @tx: (out): return location for tree X coordinate
13888  * @ty: (out): return location for tree Y coordinate
13889  *
13890  * Converts bin_window coordinates to coordinates for the
13891  * tree (the full scrollable area of the tree).
13892  *
13893  * Since: 2.12
13894  **/
13895 void
13896 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13897                                                  gint         bx,
13898                                                  gint         by,
13899                                                  gint        *tx,
13900                                                  gint        *ty)
13901 {
13902   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13903
13904   if (tx)
13905     *tx = bx;
13906   if (ty)
13907     *ty = by + tree_view->priv->dy;
13908 }
13909
13910
13911
13912 /**
13913  * gtk_tree_view_get_visible_range:
13914  * @tree_view: A #GtkTreeView
13915  * @start_path: (out) (allow-none): Return location for start of region,
13916  *              or %NULL.
13917  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13918  *
13919  * Sets @start_path and @end_path to be the first and last visible path.
13920  * Note that there may be invisible paths in between.
13921  *
13922  * The paths should be freed with gtk_tree_path_free() after use.
13923  *
13924  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13925  *
13926  * Since: 2.8
13927  **/
13928 gboolean
13929 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13930                                  GtkTreePath **start_path,
13931                                  GtkTreePath **end_path)
13932 {
13933   GtkRBTree *tree;
13934   GtkRBNode *node;
13935   gboolean retval;
13936
13937   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13938
13939   if (!tree_view->priv->tree)
13940     return FALSE;
13941
13942   retval = TRUE;
13943
13944   if (start_path)
13945     {
13946       _gtk_rbtree_find_offset (tree_view->priv->tree,
13947                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13948                                &tree, &node);
13949       if (node)
13950         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13951       else
13952         retval = FALSE;
13953     }
13954
13955   if (end_path)
13956     {
13957       gint y;
13958
13959       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
13960         y = tree_view->priv->height - 1;
13961       else
13962         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
13963
13964       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13965       if (node)
13966         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13967       else
13968         retval = FALSE;
13969     }
13970
13971   return retval;
13972 }
13973
13974 /**
13975  * gtk_tree_view_is_blank_at_pos:
13976  * @tree_view: A #GtkTreeView
13977  * @x: The x position to be identified (relative to bin_window)
13978  * @y: The y position to be identified (relative to bin_window)
13979  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13980  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13981  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13982  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13983  *
13984  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
13985  * cell content nor an expander arrow is drawn at the location. If so, the
13986  * location can be considered as the background. You might wish to take
13987  * special action on clicks on the background, such as clearing a current
13988  * selection, having a custom context menu or starting rubber banding.
13989  *
13990  * The @x and @y coordinate that are provided must be relative to bin_window
13991  * coordinates.  That is, @x and @y must come from an event on @tree_view
13992  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
13993  *
13994  * For converting widget coordinates (eg. the ones you get from
13995  * GtkWidget::query-tooltip), please see
13996  * gtk_tree_view_convert_widget_to_bin_window_coords().
13997  *
13998  * The @path, @column, @cell_x and @cell_y arguments will be filled in
13999  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14000  * gtk_tree_view_get_path_at_pos() for more information.
14001  *
14002  * Return value: %TRUE if the area at the given coordinates is blank,
14003  * %FALSE otherwise.
14004  *
14005  * Since: 3.0
14006  */
14007 gboolean
14008 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14009                                gint                x,
14010                                gint                y,
14011                                GtkTreePath       **path,
14012                                GtkTreeViewColumn **column,
14013                                gint               *cell_x,
14014                                gint               *cell_y)
14015 {
14016   GtkRBTree *tree;
14017   GtkRBNode *node;
14018   GtkTreeIter iter;
14019   GtkTreePath *real_path;
14020   GtkTreeViewColumn *real_column;
14021   GdkRectangle cell_area, background_area;
14022
14023   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14024
14025   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14026                                       &real_path, &real_column,
14027                                       cell_x, cell_y))
14028     /* If there's no path here, it is blank */
14029     return TRUE;
14030
14031   if (path)
14032     *path = real_path;
14033
14034   if (column)
14035     *column = real_column;
14036
14037   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14038   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14039
14040   /* Check if there's an expander arrow at (x, y) */
14041   if (real_column == tree_view->priv->expander_column
14042       && gtk_tree_view_draw_expanders (tree_view))
14043     {
14044       gboolean over_arrow;
14045
14046       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14047
14048       if (over_arrow)
14049         {
14050           if (!path)
14051             gtk_tree_path_free (real_path);
14052           return FALSE;
14053         }
14054     }
14055
14056   /* Otherwise, have the column see if there's a cell at (x, y) */
14057   gtk_tree_view_column_cell_set_cell_data (real_column,
14058                                            tree_view->priv->model,
14059                                            &iter,
14060                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14061                                            node->children ? TRUE : FALSE);
14062
14063   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14064                                      &background_area);
14065   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14066                                &cell_area);
14067
14068   if (!path)
14069     gtk_tree_path_free (real_path);
14070
14071   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14072                                                 &cell_area,
14073                                                 &background_area,
14074                                                 x, y);
14075 }
14076
14077 static void
14078 unset_reorderable (GtkTreeView *tree_view)
14079 {
14080   if (tree_view->priv->reorderable)
14081     {
14082       tree_view->priv->reorderable = FALSE;
14083       g_object_notify (G_OBJECT (tree_view), "reorderable");
14084     }
14085 }
14086
14087 /**
14088  * gtk_tree_view_enable_model_drag_source:
14089  * @tree_view: a #GtkTreeView
14090  * @start_button_mask: Mask of allowed buttons to start drag
14091  * @targets: (array length=n_targets): the table of targets that the drag will support
14092  * @n_targets: the number of items in @targets
14093  * @actions: the bitmask of possible actions for a drag from this
14094  *    widget
14095  *
14096  * Turns @tree_view into a drag source for automatic DND. Calling this
14097  * method sets #GtkTreeView:reorderable to %FALSE.
14098  **/
14099 void
14100 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14101                                         GdkModifierType           start_button_mask,
14102                                         const GtkTargetEntry     *targets,
14103                                         gint                      n_targets,
14104                                         GdkDragAction             actions)
14105 {
14106   TreeViewDragInfo *di;
14107
14108   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14109
14110   gtk_drag_source_set (GTK_WIDGET (tree_view),
14111                        0,
14112                        targets,
14113                        n_targets,
14114                        actions);
14115
14116   di = ensure_info (tree_view);
14117
14118   di->start_button_mask = start_button_mask;
14119   di->source_actions = actions;
14120   di->source_set = TRUE;
14121
14122   unset_reorderable (tree_view);
14123 }
14124
14125 /**
14126  * gtk_tree_view_enable_model_drag_dest:
14127  * @tree_view: a #GtkTreeView
14128  * @targets: (array length=n_targets): the table of targets that
14129  *           the drag will support
14130  * @n_targets: the number of items in @targets
14131  * @actions: the bitmask of possible actions for a drag from this
14132  *    widget
14133  *
14134  * Turns @tree_view into a drop destination for automatic DND. Calling
14135  * this method sets #GtkTreeView:reorderable to %FALSE.
14136  **/
14137 void
14138 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14139                                       const GtkTargetEntry     *targets,
14140                                       gint                      n_targets,
14141                                       GdkDragAction             actions)
14142 {
14143   TreeViewDragInfo *di;
14144
14145   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14146
14147   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14148                      0,
14149                      targets,
14150                      n_targets,
14151                      actions);
14152
14153   di = ensure_info (tree_view);
14154   di->dest_set = TRUE;
14155
14156   unset_reorderable (tree_view);
14157 }
14158
14159 /**
14160  * gtk_tree_view_unset_rows_drag_source:
14161  * @tree_view: a #GtkTreeView
14162  *
14163  * Undoes the effect of
14164  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14165  * #GtkTreeView:reorderable to %FALSE.
14166  **/
14167 void
14168 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14169 {
14170   TreeViewDragInfo *di;
14171
14172   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14173
14174   di = get_info (tree_view);
14175
14176   if (di)
14177     {
14178       if (di->source_set)
14179         {
14180           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14181           di->source_set = FALSE;
14182         }
14183
14184       if (!di->dest_set && !di->source_set)
14185         remove_info (tree_view);
14186     }
14187
14188   unset_reorderable (tree_view);
14189 }
14190
14191 /**
14192  * gtk_tree_view_unset_rows_drag_dest:
14193  * @tree_view: a #GtkTreeView
14194  *
14195  * Undoes the effect of
14196  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14197  * #GtkTreeView:reorderable to %FALSE.
14198  **/
14199 void
14200 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14201 {
14202   TreeViewDragInfo *di;
14203
14204   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14205
14206   di = get_info (tree_view);
14207
14208   if (di)
14209     {
14210       if (di->dest_set)
14211         {
14212           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14213           di->dest_set = FALSE;
14214         }
14215
14216       if (!di->dest_set && !di->source_set)
14217         remove_info (tree_view);
14218     }
14219
14220   unset_reorderable (tree_view);
14221 }
14222
14223 /**
14224  * gtk_tree_view_set_drag_dest_row:
14225  * @tree_view: a #GtkTreeView
14226  * @path: (allow-none): The path of the row to highlight, or %NULL.
14227  * @pos: Specifies whether to drop before, after or into the row
14228  *
14229  * Sets the row that is highlighted for feedback.
14230  **/
14231 void
14232 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14233                                  GtkTreePath            *path,
14234                                  GtkTreeViewDropPosition pos)
14235 {
14236   GtkTreePath *current_dest;
14237
14238   /* Note; this function is exported to allow a custom DND
14239    * implementation, so it can't touch TreeViewDragInfo
14240    */
14241
14242   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14243
14244   current_dest = NULL;
14245
14246   if (tree_view->priv->drag_dest_row)
14247     {
14248       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14249       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14250     }
14251
14252   /* special case a drop on an empty model */
14253   tree_view->priv->empty_view_drop = 0;
14254
14255   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14256       && gtk_tree_path_get_depth (path) == 1
14257       && gtk_tree_path_get_indices (path)[0] == 0)
14258     {
14259       gint n_children;
14260
14261       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14262                                                    NULL);
14263
14264       if (!n_children)
14265         tree_view->priv->empty_view_drop = 1;
14266     }
14267
14268   tree_view->priv->drag_dest_pos = pos;
14269
14270   if (path)
14271     {
14272       tree_view->priv->drag_dest_row =
14273         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14274       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14275     }
14276   else
14277     tree_view->priv->drag_dest_row = NULL;
14278
14279   if (current_dest)
14280     {
14281       GtkRBTree *tree, *new_tree;
14282       GtkRBNode *node, *new_node;
14283
14284       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14285       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14286
14287       if (tree && node)
14288         {
14289           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14290           if (new_tree && new_node)
14291             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14292
14293           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14294           if (new_tree && new_node)
14295             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14296         }
14297       gtk_tree_path_free (current_dest);
14298     }
14299 }
14300
14301 /**
14302  * gtk_tree_view_get_drag_dest_row:
14303  * @tree_view: a #GtkTreeView
14304  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14305  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14306  *
14307  * Gets information about the row that is highlighted for feedback.
14308  **/
14309 void
14310 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14311                                  GtkTreePath             **path,
14312                                  GtkTreeViewDropPosition  *pos)
14313 {
14314   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14315
14316   if (path)
14317     {
14318       if (tree_view->priv->drag_dest_row)
14319         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14320       else
14321         {
14322           if (tree_view->priv->empty_view_drop)
14323             *path = gtk_tree_path_new_from_indices (0, -1);
14324           else
14325             *path = NULL;
14326         }
14327     }
14328
14329   if (pos)
14330     *pos = tree_view->priv->drag_dest_pos;
14331 }
14332
14333 /**
14334  * gtk_tree_view_get_dest_row_at_pos:
14335  * @tree_view: a #GtkTreeView
14336  * @drag_x: the position to determine the destination row for
14337  * @drag_y: the position to determine the destination row for
14338  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14339  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14340  *
14341  * Determines the destination row for a given position.  @drag_x and
14342  * @drag_y are expected to be in widget coordinates.  This function is only
14343  * meaningful if @tree_view is realized.  Therefore this function will always
14344  * return %FALSE if @tree_view is not realized or does not have a model.
14345  *
14346  * Return value: whether there is a row at the given position, %TRUE if this
14347  * is indeed the case.
14348  **/
14349 gboolean
14350 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14351                                    gint                     drag_x,
14352                                    gint                     drag_y,
14353                                    GtkTreePath            **path,
14354                                    GtkTreeViewDropPosition *pos)
14355 {
14356   gint cell_y;
14357   gint bin_x, bin_y;
14358   gdouble offset_into_row;
14359   gdouble third;
14360   GdkRectangle cell;
14361   GtkTreeViewColumn *column = NULL;
14362   GtkTreePath *tmp_path = NULL;
14363
14364   /* Note; this function is exported to allow a custom DND
14365    * implementation, so it can't touch TreeViewDragInfo
14366    */
14367
14368   g_return_val_if_fail (tree_view != NULL, FALSE);
14369   g_return_val_if_fail (drag_x >= 0, FALSE);
14370   g_return_val_if_fail (drag_y >= 0, FALSE);
14371
14372   if (path)
14373     *path = NULL;
14374
14375   if (tree_view->priv->bin_window == NULL)
14376     return FALSE;
14377
14378   if (tree_view->priv->tree == NULL)
14379     return FALSE;
14380
14381   /* If in the top third of a row, we drop before that row; if
14382    * in the bottom third, drop after that row; if in the middle,
14383    * and the row has children, drop into the row.
14384    */
14385   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14386                                                      &bin_x, &bin_y);
14387
14388   if (!gtk_tree_view_get_path_at_pos (tree_view,
14389                                       bin_x,
14390                                       bin_y,
14391                                       &tmp_path,
14392                                       &column,
14393                                       NULL,
14394                                       &cell_y))
14395     return FALSE;
14396
14397   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14398                                      &cell);
14399
14400   offset_into_row = cell_y;
14401
14402   if (path)
14403     *path = tmp_path;
14404   else
14405     gtk_tree_path_free (tmp_path);
14406
14407   tmp_path = NULL;
14408
14409   third = cell.height / 3.0;
14410
14411   if (pos)
14412     {
14413       if (offset_into_row < third)
14414         {
14415           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14416         }
14417       else if (offset_into_row < (cell.height / 2.0))
14418         {
14419           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14420         }
14421       else if (offset_into_row < third * 2.0)
14422         {
14423           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14424         }
14425       else
14426         {
14427           *pos = GTK_TREE_VIEW_DROP_AFTER;
14428         }
14429     }
14430
14431   return TRUE;
14432 }
14433
14434
14435
14436 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14437 /**
14438  * gtk_tree_view_create_row_drag_icon:
14439  * @tree_view: a #GtkTreeView
14440  * @path: a #GtkTreePath in @tree_view
14441  *
14442  * Creates a #cairo_surface_t representation of the row at @path.
14443  * This image is used for a drag icon.
14444  *
14445  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14446  **/
14447 cairo_surface_t *
14448 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14449                                     GtkTreePath  *path)
14450 {
14451   GtkTreeIter   iter;
14452   GtkRBTree    *tree;
14453   GtkRBNode    *node;
14454   GtkStyleContext *context;
14455   GtkStateFlags state;
14456   gint cell_offset;
14457   GList *list;
14458   GdkRectangle background_area;
14459   GtkWidget *widget;
14460   gint depth;
14461   /* start drawing inside the black outline */
14462   gint x = 1, y = 1;
14463   cairo_surface_t *surface;
14464   gint bin_window_width;
14465   gboolean is_separator = FALSE;
14466   gboolean rtl, allow_rules;
14467   cairo_t *cr;
14468
14469   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14470   g_return_val_if_fail (path != NULL, NULL);
14471
14472   widget = GTK_WIDGET (tree_view);
14473
14474   if (!gtk_widget_get_realized (widget))
14475     return NULL;
14476
14477   depth = gtk_tree_path_get_depth (path);
14478
14479   _gtk_tree_view_find_node (tree_view,
14480                             path,
14481                             &tree,
14482                             &node);
14483
14484   if (tree == NULL)
14485     return NULL;
14486
14487   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14488                                 &iter,
14489                                 path))
14490     return NULL;
14491
14492   context = gtk_widget_get_style_context (widget);
14493
14494   gtk_style_context_save (context);
14495
14496   state = gtk_widget_get_state_flags (widget);
14497   gtk_style_context_set_state (context, state);
14498
14499   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14500   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14501
14502   gtk_widget_style_get (widget,
14503                         "allow-rules", &allow_rules,
14504                         NULL);
14505
14506   if (allow_rules && tree_view->priv->has_rules)
14507     {
14508       GtkRegionFlags row_flags;
14509
14510       if (_gtk_rbtree_node_find_parity (tree, node))
14511         row_flags = GTK_REGION_ODD;
14512       else
14513         row_flags = GTK_REGION_EVEN;
14514
14515       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14516     }
14517
14518   is_separator = row_is_separator (tree_view, &iter, NULL);
14519
14520   cell_offset = x;
14521
14522   background_area.y = y;
14523   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14524
14525   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14526
14527   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14528                                                CAIRO_CONTENT_COLOR,
14529                                                bin_window_width + 2,
14530                                                background_area.height + 2);
14531
14532   cr = cairo_create (surface);
14533
14534   gtk_render_background (context, cr, 0, 0,
14535                          bin_window_width + 2,
14536                          background_area.height + 2);
14537
14538   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14539
14540   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14541       list;
14542       list = (rtl ? list->prev : list->next))
14543     {
14544       GtkTreeViewColumn *column = list->data;
14545       GdkRectangle cell_area;
14546       gint vertical_separator;
14547
14548       if (!gtk_tree_view_column_get_visible (column))
14549         continue;
14550
14551       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14552                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14553                                                node->children?TRUE:FALSE);
14554
14555       background_area.x = cell_offset;
14556       background_area.width = gtk_tree_view_column_get_width (column);
14557
14558       gtk_widget_style_get (widget,
14559                             "vertical-separator", &vertical_separator,
14560                             NULL);
14561
14562       cell_area = background_area;
14563
14564       cell_area.y += vertical_separator / 2;
14565       cell_area.height -= vertical_separator;
14566
14567       if (gtk_tree_view_is_expander_column (tree_view, column))
14568         {
14569           if (!rtl)
14570             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14571           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14572
14573           if (gtk_tree_view_draw_expanders (tree_view))
14574             {
14575               if (!rtl)
14576                 cell_area.x += depth * tree_view->priv->expander_size;
14577               cell_area.width -= depth * tree_view->priv->expander_size;
14578             }
14579         }
14580
14581       if (gtk_tree_view_column_cell_is_visible (column))
14582         {
14583           if (is_separator)
14584             gtk_render_line (context, cr,
14585                              cell_area.x,
14586                              cell_area.y + cell_area.height / 2,
14587                              cell_area.x + cell_area.width,
14588                              cell_area.y + cell_area.height / 2);
14589           else
14590             _gtk_tree_view_column_cell_render (column,
14591                                                cr,
14592                                                &background_area,
14593                                                &cell_area,
14594                                                0, FALSE);
14595         }
14596       cell_offset += gtk_tree_view_column_get_width (column);
14597     }
14598
14599   cairo_set_source_rgb (cr, 0, 0, 0);
14600   cairo_rectangle (cr,
14601                    0.5, 0.5,
14602                    bin_window_width + 1,
14603                    background_area.height + 1);
14604   cairo_set_line_width (cr, 1.0);
14605   cairo_stroke (cr);
14606
14607   cairo_destroy (cr);
14608
14609   cairo_surface_set_device_offset (surface, 2, 2);
14610
14611   gtk_style_context_restore (context);
14612
14613   return surface;
14614 }
14615
14616
14617 /**
14618  * gtk_tree_view_set_destroy_count_func:
14619  * @tree_view: A #GtkTreeView
14620  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14621  * @data: (allow-none): User data to be passed to @func, or %NULL
14622  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14623  *
14624  * This function should almost never be used.  It is meant for private use by
14625  * ATK for determining the number of visible children that are removed when the
14626  * user collapses a row, or a row is deleted.
14627  **/
14628 void
14629 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14630                                       GtkTreeDestroyCountFunc  func,
14631                                       gpointer                 data,
14632                                       GDestroyNotify           destroy)
14633 {
14634   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14635
14636   if (tree_view->priv->destroy_count_destroy)
14637     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14638
14639   tree_view->priv->destroy_count_func = func;
14640   tree_view->priv->destroy_count_data = data;
14641   tree_view->priv->destroy_count_destroy = destroy;
14642 }
14643
14644
14645 /*
14646  * Interactive search
14647  */
14648
14649 /**
14650  * gtk_tree_view_set_enable_search:
14651  * @tree_view: A #GtkTreeView
14652  * @enable_search: %TRUE, if the user can search interactively
14653  *
14654  * If @enable_search is set, then the user can type in text to search through
14655  * the tree interactively (this is sometimes called "typeahead find").
14656  *
14657  * Note that even if this is %FALSE, the user can still initiate a search
14658  * using the "start-interactive-search" key binding.
14659  */
14660 void
14661 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14662                                  gboolean     enable_search)
14663 {
14664   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14665
14666   enable_search = !!enable_search;
14667
14668   if (tree_view->priv->enable_search != enable_search)
14669     {
14670        tree_view->priv->enable_search = enable_search;
14671        g_object_notify (G_OBJECT (tree_view), "enable-search");
14672     }
14673 }
14674
14675 /**
14676  * gtk_tree_view_get_enable_search:
14677  * @tree_view: A #GtkTreeView
14678  *
14679  * Returns whether or not the tree allows to start interactive searching
14680  * by typing in text.
14681  *
14682  * Return value: whether or not to let the user search interactively
14683  */
14684 gboolean
14685 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14686 {
14687   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14688
14689   return tree_view->priv->enable_search;
14690 }
14691
14692
14693 /**
14694  * gtk_tree_view_get_search_column:
14695  * @tree_view: A #GtkTreeView
14696  *
14697  * Gets the column searched on by the interactive search code.
14698  *
14699  * Return value: the column the interactive search code searches in.
14700  */
14701 gint
14702 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14703 {
14704   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14705
14706   return (tree_view->priv->search_column);
14707 }
14708
14709 /**
14710  * gtk_tree_view_set_search_column:
14711  * @tree_view: A #GtkTreeView
14712  * @column: the column of the model to search in, or -1 to disable searching
14713  *
14714  * Sets @column as the column where the interactive search code should
14715  * search in for the current model.
14716  *
14717  * If the search column is set, users can use the "start-interactive-search"
14718  * key binding to bring up search popup. The enable-search property controls
14719  * whether simply typing text will also start an interactive search.
14720  *
14721  * Note that @column refers to a column of the current model. The search
14722  * column is reset to -1 when the model is changed.
14723  */
14724 void
14725 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14726                                  gint         column)
14727 {
14728   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14729   g_return_if_fail (column >= -1);
14730
14731   if (tree_view->priv->search_column == column)
14732     return;
14733
14734   tree_view->priv->search_column = column;
14735   g_object_notify (G_OBJECT (tree_view), "search-column");
14736 }
14737
14738 /**
14739  * gtk_tree_view_get_search_equal_func: (skip)
14740  * @tree_view: A #GtkTreeView
14741  *
14742  * Returns the compare function currently in use.
14743  *
14744  * Return value: the currently used compare function for the search code.
14745  */
14746
14747 GtkTreeViewSearchEqualFunc
14748 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14749 {
14750   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14751
14752   return tree_view->priv->search_equal_func;
14753 }
14754
14755 /**
14756  * gtk_tree_view_set_search_equal_func:
14757  * @tree_view: A #GtkTreeView
14758  * @search_equal_func: the compare function to use during the search
14759  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14760  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14761  *
14762  * Sets the compare function for the interactive search capabilities; note
14763  * that somewhat like strcmp() returning 0 for equality
14764  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14765  **/
14766 void
14767 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14768                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14769                                      gpointer                    search_user_data,
14770                                      GDestroyNotify              search_destroy)
14771 {
14772   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14773   g_return_if_fail (search_equal_func != NULL);
14774
14775   if (tree_view->priv->search_destroy)
14776     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14777
14778   tree_view->priv->search_equal_func = search_equal_func;
14779   tree_view->priv->search_user_data = search_user_data;
14780   tree_view->priv->search_destroy = search_destroy;
14781   if (tree_view->priv->search_equal_func == NULL)
14782     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14783 }
14784
14785 /**
14786  * gtk_tree_view_get_search_entry:
14787  * @tree_view: A #GtkTreeView
14788  *
14789  * Returns the #GtkEntry which is currently in use as interactive search
14790  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14791  * will be returned.
14792  *
14793  * Return value: (transfer none): the entry currently in use as search entry.
14794  *
14795  * Since: 2.10
14796  */
14797 GtkEntry *
14798 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14799 {
14800   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14801
14802   if (tree_view->priv->search_custom_entry_set)
14803     return GTK_ENTRY (tree_view->priv->search_entry);
14804
14805   return NULL;
14806 }
14807
14808 /**
14809  * gtk_tree_view_set_search_entry:
14810  * @tree_view: A #GtkTreeView
14811  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14812  *
14813  * Sets the entry which the interactive search code will use for this
14814  * @tree_view.  This is useful when you want to provide a search entry
14815  * in our interface at all time at a fixed position.  Passing %NULL for
14816  * @entry will make the interactive search code use the built-in popup
14817  * entry again.
14818  *
14819  * Since: 2.10
14820  */
14821 void
14822 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14823                                 GtkEntry    *entry)
14824 {
14825   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14826   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14827
14828   if (tree_view->priv->search_custom_entry_set)
14829     {
14830       if (tree_view->priv->search_entry_changed_id)
14831         {
14832           g_signal_handler_disconnect (tree_view->priv->search_entry,
14833                                        tree_view->priv->search_entry_changed_id);
14834           tree_view->priv->search_entry_changed_id = 0;
14835         }
14836       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14837                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14838                                             tree_view);
14839
14840       g_object_unref (tree_view->priv->search_entry);
14841     }
14842   else if (tree_view->priv->search_window)
14843     {
14844       gtk_widget_destroy (tree_view->priv->search_window);
14845
14846       tree_view->priv->search_window = NULL;
14847     }
14848
14849   if (entry)
14850     {
14851       tree_view->priv->search_entry = g_object_ref (entry);
14852       tree_view->priv->search_custom_entry_set = TRUE;
14853
14854       if (tree_view->priv->search_entry_changed_id == 0)
14855         {
14856           tree_view->priv->search_entry_changed_id =
14857             g_signal_connect (tree_view->priv->search_entry, "changed",
14858                               G_CALLBACK (gtk_tree_view_search_init),
14859                               tree_view);
14860         }
14861
14862         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14863                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14864                           tree_view);
14865
14866         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14867     }
14868   else
14869     {
14870       tree_view->priv->search_entry = NULL;
14871       tree_view->priv->search_custom_entry_set = FALSE;
14872     }
14873 }
14874
14875 /**
14876  * gtk_tree_view_set_search_position_func:
14877  * @tree_view: A #GtkTreeView
14878  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14879  *    to use the default search position function
14880  * @data: (allow-none): user data to pass to @func, or %NULL
14881  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14882  *
14883  * Sets the function to use when positioning the search dialog.
14884  *
14885  * Since: 2.10
14886  **/
14887 void
14888 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14889                                         GtkTreeViewSearchPositionFunc  func,
14890                                         gpointer                       user_data,
14891                                         GDestroyNotify                 destroy)
14892 {
14893   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14894
14895   if (tree_view->priv->search_position_destroy)
14896     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14897
14898   tree_view->priv->search_position_func = func;
14899   tree_view->priv->search_position_user_data = user_data;
14900   tree_view->priv->search_position_destroy = destroy;
14901   if (tree_view->priv->search_position_func == NULL)
14902     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14903 }
14904
14905 /**
14906  * gtk_tree_view_get_search_position_func: (skip)
14907  * @tree_view: A #GtkTreeView
14908  *
14909  * Returns the positioning function currently in use.
14910  *
14911  * Return value: the currently used function for positioning the search dialog.
14912  *
14913  * Since: 2.10
14914  */
14915 GtkTreeViewSearchPositionFunc
14916 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14917 {
14918   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14919
14920   return tree_view->priv->search_position_func;
14921 }
14922
14923
14924 static void
14925 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14926                                   GtkTreeView *tree_view,
14927                                   GdkDevice   *device)
14928 {
14929   if (tree_view->priv->disable_popdown)
14930     return;
14931
14932   if (tree_view->priv->search_entry_changed_id)
14933     {
14934       g_signal_handler_disconnect (tree_view->priv->search_entry,
14935                                    tree_view->priv->search_entry_changed_id);
14936       tree_view->priv->search_entry_changed_id = 0;
14937     }
14938   if (tree_view->priv->typeselect_flush_timeout)
14939     {
14940       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14941       tree_view->priv->typeselect_flush_timeout = 0;
14942     }
14943
14944   if (gtk_widget_get_visible (search_dialog))
14945     {
14946       /* send focus-in event */
14947       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14948       gtk_widget_hide (search_dialog);
14949       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14950       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14951     }
14952 }
14953
14954 static void
14955 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14956                                     GtkWidget   *search_dialog,
14957                                     gpointer     user_data)
14958 {
14959   gint x, y;
14960   gint tree_x, tree_y;
14961   gint tree_width, tree_height;
14962   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14963   GdkScreen *screen = gdk_window_get_screen (tree_window);
14964   GtkRequisition requisition;
14965   gint monitor_num;
14966   GdkRectangle monitor;
14967
14968   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14969   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14970
14971   gtk_widget_realize (search_dialog);
14972
14973   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14974   tree_width = gdk_window_get_width (tree_window);
14975   tree_height = gdk_window_get_height (tree_window);
14976   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
14977
14978   if (tree_x + tree_width > gdk_screen_get_width (screen))
14979     x = gdk_screen_get_width (screen) - requisition.width;
14980   else if (tree_x + tree_width - requisition.width < 0)
14981     x = 0;
14982   else
14983     x = tree_x + tree_width - requisition.width;
14984
14985   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14986     y = gdk_screen_get_height (screen) - requisition.height;
14987   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14988     y = 0;
14989   else
14990     y = tree_y + tree_height;
14991
14992   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14993 }
14994
14995 static void
14996 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14997                                       GtkMenu  *menu,
14998                                       gpointer  data)
14999 {
15000   GtkTreeView *tree_view = (GtkTreeView *)data;
15001
15002   tree_view->priv->disable_popdown = 1;
15003   g_signal_connect (menu, "hide",
15004                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15005 }
15006
15007 /* Because we're visible but offscreen, we just set a flag in the preedit
15008  * callback.
15009  */
15010 static void
15011 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15012                                       GtkTreeView  *tree_view)
15013 {
15014   tree_view->priv->imcontext_changed = 1;
15015   if (tree_view->priv->typeselect_flush_timeout)
15016     {
15017       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15018       tree_view->priv->typeselect_flush_timeout =
15019         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15020                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15021                        tree_view);
15022     }
15023
15024 }
15025
15026 static void
15027 gtk_tree_view_search_activate (GtkEntry    *entry,
15028                                GtkTreeView *tree_view)
15029 {
15030   GtkTreePath *path;
15031   GtkRBNode *node;
15032   GtkRBTree *tree;
15033
15034   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15035                                     tree_view,
15036                                     gtk_get_current_event_device ());
15037
15038   /* If we have a row selected and it's the cursor row, we activate
15039    * the row XXX */
15040   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
15041     {
15042       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
15043
15044       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15045
15046       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
15047         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15048
15049       gtk_tree_path_free (path);
15050     }
15051 }
15052
15053 static gboolean
15054 gtk_tree_view_real_search_enable_popdown (gpointer data)
15055 {
15056   GtkTreeView *tree_view = (GtkTreeView *)data;
15057
15058   tree_view->priv->disable_popdown = 0;
15059
15060   return FALSE;
15061 }
15062
15063 static void
15064 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15065                                      gpointer   data)
15066 {
15067   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15068 }
15069
15070 static gboolean
15071 gtk_tree_view_search_delete_event (GtkWidget *widget,
15072                                    GdkEventAny *event,
15073                                    GtkTreeView *tree_view)
15074 {
15075   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15076
15077   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15078
15079   return TRUE;
15080 }
15081
15082 static gboolean
15083 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15084                                          GdkEventButton *event,
15085                                          GtkTreeView *tree_view)
15086 {
15087   GdkDevice *keyb_device;
15088
15089   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15090
15091   keyb_device = gdk_device_get_associated_device (event->device);
15092   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15093
15094   if (event->window == tree_view->priv->bin_window)
15095     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15096
15097   return TRUE;
15098 }
15099
15100 static gboolean
15101 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15102                                    GdkEventScroll *event,
15103                                    GtkTreeView *tree_view)
15104 {
15105   gboolean retval = FALSE;
15106
15107   if (event->direction == GDK_SCROLL_UP)
15108     {
15109       gtk_tree_view_search_move (widget, tree_view, TRUE);
15110       retval = TRUE;
15111     }
15112   else if (event->direction == GDK_SCROLL_DOWN)
15113     {
15114       gtk_tree_view_search_move (widget, tree_view, FALSE);
15115       retval = TRUE;
15116     }
15117
15118   /* renew the flush timeout */
15119   if (retval && tree_view->priv->typeselect_flush_timeout
15120       && !tree_view->priv->search_custom_entry_set)
15121     {
15122       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15123       tree_view->priv->typeselect_flush_timeout =
15124         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15125                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15126                        tree_view);
15127     }
15128
15129   return retval;
15130 }
15131
15132 static gboolean
15133 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15134                                       GdkEventKey *event,
15135                                       GtkTreeView *tree_view)
15136 {
15137   gboolean retval = FALSE;
15138
15139   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15140   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15141
15142   /* close window and cancel the search */
15143   if (!tree_view->priv->search_custom_entry_set
15144       && (event->keyval == GDK_KEY_Escape ||
15145           event->keyval == GDK_KEY_Tab ||
15146             event->keyval == GDK_KEY_KP_Tab ||
15147             event->keyval == GDK_KEY_ISO_Left_Tab))
15148     {
15149       gtk_tree_view_search_dialog_hide (widget, tree_view,
15150                                         gdk_event_get_device ((GdkEvent *) event));
15151       return TRUE;
15152     }
15153
15154   /* select previous matching iter */
15155   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15156     {
15157       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15158         gtk_widget_error_bell (widget);
15159
15160       retval = TRUE;
15161     }
15162
15163   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
15164       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15165     {
15166       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15167         gtk_widget_error_bell (widget);
15168
15169       retval = TRUE;
15170     }
15171
15172   /* select next matching iter */
15173   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15174     {
15175       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15176         gtk_widget_error_bell (widget);
15177
15178       retval = TRUE;
15179     }
15180
15181   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
15182       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15183     {
15184       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15185         gtk_widget_error_bell (widget);
15186
15187       retval = TRUE;
15188     }
15189
15190   /* renew the flush timeout */
15191   if (retval && tree_view->priv->typeselect_flush_timeout
15192       && !tree_view->priv->search_custom_entry_set)
15193     {
15194       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15195       tree_view->priv->typeselect_flush_timeout =
15196         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15197                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15198                        tree_view);
15199     }
15200
15201   return retval;
15202 }
15203
15204 /*  this function returns FALSE if there is a search string but
15205  *  nothing was found, and TRUE otherwise.
15206  */
15207 static gboolean
15208 gtk_tree_view_search_move (GtkWidget   *window,
15209                            GtkTreeView *tree_view,
15210                            gboolean     up)
15211 {
15212   gboolean ret;
15213   gint len;
15214   gint count = 0;
15215   const gchar *text;
15216   GtkTreeIter iter;
15217   GtkTreeModel *model;
15218   GtkTreeSelection *selection;
15219
15220   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15221
15222   g_return_val_if_fail (text != NULL, FALSE);
15223
15224   len = strlen (text);
15225
15226   if (up && tree_view->priv->selected_iter == 1)
15227     return strlen (text) < 1;
15228
15229   len = strlen (text);
15230
15231   if (len < 1)
15232     return TRUE;
15233
15234   model = gtk_tree_view_get_model (tree_view);
15235   selection = gtk_tree_view_get_selection (tree_view);
15236
15237   /* search */
15238   gtk_tree_selection_unselect_all (selection);
15239   if (!gtk_tree_model_get_iter_first (model, &iter))
15240     return TRUE;
15241
15242   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15243                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15244
15245   if (ret)
15246     {
15247       /* found */
15248       tree_view->priv->selected_iter += up?(-1):(1);
15249       return TRUE;
15250     }
15251   else
15252     {
15253       /* return to old iter */
15254       count = 0;
15255       gtk_tree_model_get_iter_first (model, &iter);
15256       gtk_tree_view_search_iter (model, selection,
15257                                  &iter, text,
15258                                  &count, tree_view->priv->selected_iter);
15259       return FALSE;
15260     }
15261 }
15262
15263 static gboolean
15264 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15265                                  gint          column,
15266                                  const gchar  *key,
15267                                  GtkTreeIter  *iter,
15268                                  gpointer      search_data)
15269 {
15270   gboolean retval = TRUE;
15271   const gchar *str;
15272   gchar *normalized_string;
15273   gchar *normalized_key;
15274   gchar *case_normalized_string = NULL;
15275   gchar *case_normalized_key = NULL;
15276   GValue value = {0,};
15277   GValue transformed = {0,};
15278
15279   gtk_tree_model_get_value (model, iter, column, &value);
15280
15281   g_value_init (&transformed, G_TYPE_STRING);
15282
15283   if (!g_value_transform (&value, &transformed))
15284     {
15285       g_value_unset (&value);
15286       return TRUE;
15287     }
15288
15289   g_value_unset (&value);
15290
15291   str = g_value_get_string (&transformed);
15292   if (!str)
15293     {
15294       g_value_unset (&transformed);
15295       return TRUE;
15296     }
15297
15298   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15299   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15300
15301   if (normalized_string && normalized_key)
15302     {
15303       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15304       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15305
15306       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15307         retval = FALSE;
15308     }
15309
15310   g_value_unset (&transformed);
15311   g_free (normalized_key);
15312   g_free (normalized_string);
15313   g_free (case_normalized_key);
15314   g_free (case_normalized_string);
15315
15316   return retval;
15317 }
15318
15319 static gboolean
15320 gtk_tree_view_search_iter (GtkTreeModel     *model,
15321                            GtkTreeSelection *selection,
15322                            GtkTreeIter      *iter,
15323                            const gchar      *text,
15324                            gint             *count,
15325                            gint              n)
15326 {
15327   GtkRBTree *tree = NULL;
15328   GtkRBNode *node = NULL;
15329   GtkTreePath *path;
15330
15331   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15332
15333   path = gtk_tree_model_get_path (model, iter);
15334   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15335
15336   do
15337     {
15338       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15339         {
15340           (*count)++;
15341           if (*count == n)
15342             {
15343               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15344                                             TRUE, 0.5, 0.0);
15345               gtk_tree_selection_select_iter (selection, iter);
15346               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15347
15348               if (path)
15349                 gtk_tree_path_free (path);
15350
15351               return TRUE;
15352             }
15353         }
15354
15355       if (node->children)
15356         {
15357           gboolean has_child;
15358           GtkTreeIter tmp;
15359
15360           tree = node->children;
15361           node = tree->root;
15362
15363           while (node->left != tree->nil)
15364             node = node->left;
15365
15366           tmp = *iter;
15367           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15368           gtk_tree_path_down (path);
15369
15370           /* sanity check */
15371           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15372         }
15373       else
15374         {
15375           gboolean done = FALSE;
15376
15377           do
15378             {
15379               node = _gtk_rbtree_next (tree, node);
15380
15381               if (node)
15382                 {
15383                   gboolean has_next;
15384
15385                   has_next = gtk_tree_model_iter_next (model, iter);
15386
15387                   done = TRUE;
15388                   gtk_tree_path_next (path);
15389
15390                   /* sanity check */
15391                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15392                 }
15393               else
15394                 {
15395                   gboolean has_parent;
15396                   GtkTreeIter tmp_iter = *iter;
15397
15398                   node = tree->parent_node;
15399                   tree = tree->parent_tree;
15400
15401                   if (!tree)
15402                     {
15403                       if (path)
15404                         gtk_tree_path_free (path);
15405
15406                       /* we've run out of tree, done with this func */
15407                       return FALSE;
15408                     }
15409
15410                   has_parent = gtk_tree_model_iter_parent (model,
15411                                                            iter,
15412                                                            &tmp_iter);
15413                   gtk_tree_path_up (path);
15414
15415                   /* sanity check */
15416                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15417                 }
15418             }
15419           while (!done);
15420         }
15421     }
15422   while (1);
15423
15424   return FALSE;
15425 }
15426
15427 static void
15428 gtk_tree_view_search_init (GtkWidget   *entry,
15429                            GtkTreeView *tree_view)
15430 {
15431   gint ret;
15432   gint count = 0;
15433   const gchar *text;
15434   GtkTreeIter iter;
15435   GtkTreeModel *model;
15436   GtkTreeSelection *selection;
15437
15438   g_return_if_fail (GTK_IS_ENTRY (entry));
15439   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15440
15441   text = gtk_entry_get_text (GTK_ENTRY (entry));
15442
15443   model = gtk_tree_view_get_model (tree_view);
15444   selection = gtk_tree_view_get_selection (tree_view);
15445
15446   /* search */
15447   gtk_tree_selection_unselect_all (selection);
15448   if (tree_view->priv->typeselect_flush_timeout
15449       && !tree_view->priv->search_custom_entry_set)
15450     {
15451       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15452       tree_view->priv->typeselect_flush_timeout =
15453         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15454                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15455                        tree_view);
15456     }
15457
15458   if (*text == '\0')
15459     return;
15460
15461   if (!gtk_tree_model_get_iter_first (model, &iter))
15462     return;
15463
15464   ret = gtk_tree_view_search_iter (model, selection,
15465                                    &iter, text,
15466                                    &count, 1);
15467
15468   if (ret)
15469     tree_view->priv->selected_iter = 1;
15470 }
15471
15472 void
15473 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15474                                 GtkTreeViewColumn *column,
15475                                 GtkCellEditable   *cell_editable)
15476 {
15477   if (tree_view->priv->edited_column == NULL)
15478     return;
15479
15480   g_return_if_fail (column == tree_view->priv->edited_column);
15481
15482   tree_view->priv->edited_column = NULL;
15483
15484   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15485     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15486
15487   gtk_container_remove (GTK_CONTAINER (tree_view),
15488                         GTK_WIDGET (cell_editable));
15489
15490   /* FIXME should only redraw a single node */
15491   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15492 }
15493
15494 static gboolean
15495 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15496                              GtkTreePath *cursor_path,
15497                              gboolean     edit_only)
15498 {
15499   GtkTreeIter iter;
15500   GdkRectangle cell_area;
15501   GtkTreeViewColumn *focus_column;
15502   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15503   gint retval = FALSE;
15504   GtkRBTree *cursor_tree;
15505   GtkRBNode *cursor_node;
15506
15507   g_assert (tree_view->priv->focus_column);
15508   focus_column = tree_view->priv->focus_column;
15509
15510   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15511     return FALSE;
15512
15513   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15514       cursor_node == NULL)
15515     return FALSE;
15516
15517   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15518
15519   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15520
15521   gtk_tree_view_column_cell_set_cell_data (focus_column,
15522                                            tree_view->priv->model,
15523                                            &iter,
15524                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15525                                            cursor_node->children ? TRUE : FALSE);
15526   gtk_tree_view_get_cell_area (tree_view,
15527                                cursor_path,
15528                                focus_column,
15529                                &cell_area);
15530
15531   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15532                               _gtk_tree_view_column_get_context (focus_column),
15533                               GTK_WIDGET (tree_view),
15534                               &cell_area,
15535                               flags, edit_only))
15536     retval = TRUE;
15537
15538   return retval;
15539 }
15540
15541 void
15542 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15543                              GtkTreeViewColumn *column,
15544                              GtkTreePath       *path,
15545                              GtkCellEditable   *cell_editable,
15546                              GdkRectangle      *cell_area)
15547 {
15548   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15549   GtkRequisition requisition;
15550
15551   tree_view->priv->edited_column = column;
15552
15553   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15554   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15555
15556   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15557                                  &requisition, NULL);
15558
15559   tree_view->priv->draw_keyfocus = TRUE;
15560
15561   if (requisition.height < cell_area->height)
15562     {
15563       gint diff = cell_area->height - requisition.height;
15564       gtk_tree_view_put (tree_view,
15565                          GTK_WIDGET (cell_editable),
15566                          cell_area->x, cell_area->y + diff/2,
15567                          cell_area->width, requisition.height);
15568     }
15569   else
15570     {
15571       gtk_tree_view_put (tree_view,
15572                          GTK_WIDGET (cell_editable),
15573                          cell_area->x, cell_area->y,
15574                          cell_area->width, cell_area->height);
15575     }
15576 }
15577
15578 static void
15579 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15580                             gboolean     cancel_editing)
15581 {
15582   GtkTreeViewColumn *column;
15583
15584   if (tree_view->priv->edited_column == NULL)
15585     return;
15586
15587   /*
15588    * This is very evil. We need to do this, because
15589    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15590    * later on. If gtk_tree_view_row_changed notices
15591    * tree_view->priv->edited_column != NULL, it'll call
15592    * gtk_tree_view_stop_editing again. Bad things will happen then.
15593    *
15594    * Please read that again if you intend to modify anything here.
15595    */
15596
15597   column = tree_view->priv->edited_column;
15598   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15599   tree_view->priv->edited_column = NULL;
15600 }
15601
15602
15603 /**
15604  * gtk_tree_view_set_hover_selection:
15605  * @tree_view: a #GtkTreeView
15606  * @hover: %TRUE to enable hover selection mode
15607  *
15608  * Enables of disables the hover selection mode of @tree_view.
15609  * Hover selection makes the selected row follow the pointer.
15610  * Currently, this works only for the selection modes
15611  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15612  *
15613  * Since: 2.6
15614  **/
15615 void
15616 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15617                                    gboolean     hover)
15618 {
15619   hover = hover != FALSE;
15620
15621   if (hover != tree_view->priv->hover_selection)
15622     {
15623       tree_view->priv->hover_selection = hover;
15624
15625       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15626     }
15627 }
15628
15629 /**
15630  * gtk_tree_view_get_hover_selection:
15631  * @tree_view: a #GtkTreeView
15632  *
15633  * Returns whether hover selection mode is turned on for @tree_view.
15634  *
15635  * Return value: %TRUE if @tree_view is in hover selection mode
15636  *
15637  * Since: 2.6
15638  **/
15639 gboolean
15640 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15641 {
15642   return tree_view->priv->hover_selection;
15643 }
15644
15645 /**
15646  * gtk_tree_view_set_hover_expand:
15647  * @tree_view: a #GtkTreeView
15648  * @expand: %TRUE to enable hover selection mode
15649  *
15650  * Enables of disables the hover expansion mode of @tree_view.
15651  * Hover expansion makes rows expand or collapse if the pointer
15652  * moves over them.
15653  *
15654  * Since: 2.6
15655  **/
15656 void
15657 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15658                                 gboolean     expand)
15659 {
15660   expand = expand != FALSE;
15661
15662   if (expand != tree_view->priv->hover_expand)
15663     {
15664       tree_view->priv->hover_expand = expand;
15665
15666       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15667     }
15668 }
15669
15670 /**
15671  * gtk_tree_view_get_hover_expand:
15672  * @tree_view: a #GtkTreeView
15673  *
15674  * Returns whether hover expansion mode is turned on for @tree_view.
15675  *
15676  * Return value: %TRUE if @tree_view is in hover expansion mode
15677  *
15678  * Since: 2.6
15679  **/
15680 gboolean
15681 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15682 {
15683   return tree_view->priv->hover_expand;
15684 }
15685
15686 /**
15687  * gtk_tree_view_set_rubber_banding:
15688  * @tree_view: a #GtkTreeView
15689  * @enable: %TRUE to enable rubber banding
15690  *
15691  * Enables or disables rubber banding in @tree_view.  If the selection mode
15692  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15693  * multiple rows by dragging the mouse.
15694  *
15695  * Since: 2.10
15696  **/
15697 void
15698 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15699                                   gboolean     enable)
15700 {
15701   enable = enable != FALSE;
15702
15703   if (enable != tree_view->priv->rubber_banding_enable)
15704     {
15705       tree_view->priv->rubber_banding_enable = enable;
15706
15707       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15708     }
15709 }
15710
15711 /**
15712  * gtk_tree_view_get_rubber_banding:
15713  * @tree_view: a #GtkTreeView
15714  *
15715  * Returns whether rubber banding is turned on for @tree_view.  If the
15716  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15717  * user to select multiple rows by dragging the mouse.
15718  *
15719  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15720  *
15721  * Since: 2.10
15722  **/
15723 gboolean
15724 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15725 {
15726   return tree_view->priv->rubber_banding_enable;
15727 }
15728
15729 /**
15730  * gtk_tree_view_is_rubber_banding_active:
15731  * @tree_view: a #GtkTreeView
15732  *
15733  * Returns whether a rubber banding operation is currently being done
15734  * in @tree_view.
15735  *
15736  * Return value: %TRUE if a rubber banding operation is currently being
15737  * done in @tree_view.
15738  *
15739  * Since: 2.12
15740  **/
15741 gboolean
15742 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15743 {
15744   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15745
15746   if (tree_view->priv->rubber_banding_enable
15747       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15748     return TRUE;
15749
15750   return FALSE;
15751 }
15752
15753 /**
15754  * gtk_tree_view_get_row_separator_func: (skip)
15755  * @tree_view: a #GtkTreeView
15756  *
15757  * Returns the current row separator function.
15758  *
15759  * Return value: the current row separator function.
15760  *
15761  * Since: 2.6
15762  **/
15763 GtkTreeViewRowSeparatorFunc
15764 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15765 {
15766   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15767
15768   return tree_view->priv->row_separator_func;
15769 }
15770
15771 /**
15772  * gtk_tree_view_set_row_separator_func:
15773  * @tree_view: a #GtkTreeView
15774  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15775  * @data: (allow-none): user data to pass to @func, or %NULL
15776  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15777  *
15778  * Sets the row separator function, which is used to determine
15779  * whether a row should be drawn as a separator. If the row separator
15780  * function is %NULL, no separators are drawn. This is the default value.
15781  *
15782  * Since: 2.6
15783  **/
15784 void
15785 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15786                                       GtkTreeViewRowSeparatorFunc  func,
15787                                       gpointer                     data,
15788                                       GDestroyNotify               destroy)
15789 {
15790   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15791
15792   if (tree_view->priv->row_separator_destroy)
15793     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15794
15795   tree_view->priv->row_separator_func = func;
15796   tree_view->priv->row_separator_data = data;
15797   tree_view->priv->row_separator_destroy = destroy;
15798
15799   /* Have the tree recalculate heights */
15800   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15801   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15802 }
15803
15804
15805 static void
15806 gtk_tree_view_grab_notify (GtkWidget *widget,
15807                            gboolean   was_grabbed)
15808 {
15809   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15810
15811   tree_view->priv->in_grab = !was_grabbed;
15812
15813   if (!was_grabbed)
15814     {
15815       tree_view->priv->pressed_button = -1;
15816
15817       if (tree_view->priv->rubber_band_status)
15818         gtk_tree_view_stop_rubber_band (tree_view);
15819     }
15820 }
15821
15822 static void
15823 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15824                                    GtkStateFlags  previous_state)
15825 {
15826   if (gtk_widget_get_realized (widget))
15827     {
15828       GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15829       GtkStyleContext *context;
15830
15831       context = gtk_widget_get_style_context (widget);
15832       gtk_style_context_set_background (context, tree_view->priv->bin_window);
15833     }
15834
15835   gtk_widget_queue_draw (widget);
15836 }
15837
15838 /**
15839  * gtk_tree_view_get_grid_lines:
15840  * @tree_view: a #GtkTreeView
15841  *
15842  * Returns which grid lines are enabled in @tree_view.
15843  *
15844  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15845  * are enabled.
15846  *
15847  * Since: 2.10
15848  */
15849 GtkTreeViewGridLines
15850 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15851 {
15852   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15853
15854   return tree_view->priv->grid_lines;
15855 }
15856
15857 /**
15858  * gtk_tree_view_set_grid_lines:
15859  * @tree_view: a #GtkTreeView
15860  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15861  * enable.
15862  *
15863  * Sets which grid lines to draw in @tree_view.
15864  *
15865  * Since: 2.10
15866  */
15867 void
15868 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15869                               GtkTreeViewGridLines   grid_lines)
15870 {
15871   GtkTreeViewPrivate *priv;
15872   GtkWidget *widget;
15873   GtkTreeViewGridLines old_grid_lines;
15874
15875   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15876
15877   priv = tree_view->priv;
15878   widget = GTK_WIDGET (tree_view);
15879
15880   old_grid_lines = priv->grid_lines;
15881   priv->grid_lines = grid_lines;
15882
15883   if (gtk_widget_get_realized (widget))
15884     {
15885       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15886           priv->grid_line_width)
15887         {
15888           priv->grid_line_width = 0;
15889         }
15890
15891       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15892           !priv->grid_line_width)
15893         {
15894           gint8 *dash_list;
15895
15896           gtk_widget_style_get (widget,
15897                                 "grid-line-width", &priv->grid_line_width,
15898                                 "grid-line-pattern", (gchar *)&dash_list,
15899                                 NULL);
15900
15901           if (dash_list)
15902             {
15903               priv->grid_line_dashes[0] = dash_list[0];
15904               if (dash_list[0])
15905                 priv->grid_line_dashes[1] = dash_list[1];
15906
15907               g_free (dash_list);
15908             }
15909           else
15910             {
15911               priv->grid_line_dashes[0] = 1;
15912               priv->grid_line_dashes[1] = 1;
15913             }
15914         }
15915     }
15916
15917   if (old_grid_lines != grid_lines)
15918     {
15919       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15920
15921       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15922     }
15923 }
15924
15925 /**
15926  * gtk_tree_view_get_enable_tree_lines:
15927  * @tree_view: a #GtkTreeView.
15928  *
15929  * Returns whether or not tree lines are drawn in @tree_view.
15930  *
15931  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15932  * otherwise.
15933  *
15934  * Since: 2.10
15935  */
15936 gboolean
15937 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15938 {
15939   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15940
15941   return tree_view->priv->tree_lines_enabled;
15942 }
15943
15944 /**
15945  * gtk_tree_view_set_enable_tree_lines:
15946  * @tree_view: a #GtkTreeView
15947  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15948  *
15949  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15950  * This does not have any visible effects for lists.
15951  *
15952  * Since: 2.10
15953  */
15954 void
15955 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15956                                      gboolean     enabled)
15957 {
15958   GtkTreeViewPrivate *priv;
15959   GtkWidget *widget;
15960   gboolean was_enabled;
15961
15962   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15963
15964   enabled = enabled != FALSE;
15965
15966   priv = tree_view->priv;
15967   widget = GTK_WIDGET (tree_view);
15968
15969   was_enabled = priv->tree_lines_enabled;
15970
15971   priv->tree_lines_enabled = enabled;
15972
15973   if (gtk_widget_get_realized (widget))
15974     {
15975       if (!enabled && priv->tree_line_width)
15976         {
15977           priv->tree_line_width = 0;
15978         }
15979
15980       if (enabled && !priv->tree_line_width)
15981         {
15982           gint8 *dash_list;
15983           gtk_widget_style_get (widget,
15984                                 "tree-line-width", &priv->tree_line_width,
15985                                 "tree-line-pattern", (gchar *)&dash_list,
15986                                 NULL);
15987
15988           if (dash_list)
15989             {
15990               priv->tree_line_dashes[0] = dash_list[0];
15991               if (dash_list[0])
15992                 priv->tree_line_dashes[1] = dash_list[1];
15993
15994               g_free (dash_list);
15995             }
15996           else
15997             {
15998               priv->tree_line_dashes[0] = 1;
15999               priv->tree_line_dashes[1] = 1;
16000             }
16001         }
16002     }
16003
16004   if (was_enabled != enabled)
16005     {
16006       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16007
16008       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16009     }
16010 }
16011
16012
16013 /**
16014  * gtk_tree_view_set_show_expanders:
16015  * @tree_view: a #GtkTreeView
16016  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16017  *
16018  * Sets whether to draw and enable expanders and indent child rows in
16019  * @tree_view.  When disabled there will be no expanders visible in trees
16020  * and there will be no way to expand and collapse rows by default.  Also
16021  * note that hiding the expanders will disable the default indentation.  You
16022  * can set a custom indentation in this case using
16023  * gtk_tree_view_set_level_indentation().
16024  * This does not have any visible effects for lists.
16025  *
16026  * Since: 2.12
16027  */
16028 void
16029 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16030                                   gboolean     enabled)
16031 {
16032   gboolean was_enabled;
16033
16034   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16035
16036   enabled = enabled != FALSE;
16037   was_enabled = tree_view->priv->show_expanders;
16038
16039   tree_view->priv->show_expanders = enabled == TRUE;
16040
16041   if (enabled != was_enabled)
16042     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16043 }
16044
16045 /**
16046  * gtk_tree_view_get_show_expanders:
16047  * @tree_view: a #GtkTreeView.
16048  *
16049  * Returns whether or not expanders are drawn in @tree_view.
16050  *
16051  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16052  * otherwise.
16053  *
16054  * Since: 2.12
16055  */
16056 gboolean
16057 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16058 {
16059   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16060
16061   return tree_view->priv->show_expanders;
16062 }
16063
16064 /**
16065  * gtk_tree_view_set_level_indentation:
16066  * @tree_view: a #GtkTreeView
16067  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16068  *
16069  * Sets the amount of extra indentation for child levels to use in @tree_view
16070  * in addition to the default indentation.  The value should be specified in
16071  * pixels, a value of 0 disables this feature and in this case only the default
16072  * indentation will be used.
16073  * This does not have any visible effects for lists.
16074  *
16075  * Since: 2.12
16076  */
16077 void
16078 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16079                                      gint         indentation)
16080 {
16081   tree_view->priv->level_indentation = indentation;
16082
16083   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16084 }
16085
16086 /**
16087  * gtk_tree_view_get_level_indentation:
16088  * @tree_view: a #GtkTreeView.
16089  *
16090  * Returns the amount, in pixels, of extra indentation for child levels
16091  * in @tree_view.
16092  *
16093  * Return value: the amount of extra indentation for child levels in
16094  * @tree_view.  A return value of 0 means that this feature is disabled.
16095  *
16096  * Since: 2.12
16097  */
16098 gint
16099 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16100 {
16101   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16102
16103   return tree_view->priv->level_indentation;
16104 }
16105
16106 /**
16107  * gtk_tree_view_set_tooltip_row:
16108  * @tree_view: a #GtkTreeView
16109  * @tooltip: a #GtkTooltip
16110  * @path: a #GtkTreePath
16111  *
16112  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16113  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16114  * See also gtk_tooltip_set_tip_area().
16115  *
16116  * Since: 2.12
16117  */
16118 void
16119 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16120                                GtkTooltip  *tooltip,
16121                                GtkTreePath *path)
16122 {
16123   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16124   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16125
16126   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16127 }
16128
16129 /**
16130  * gtk_tree_view_set_tooltip_cell:
16131  * @tree_view: a #GtkTreeView
16132  * @tooltip: a #GtkTooltip
16133  * @path: (allow-none): a #GtkTreePath or %NULL
16134  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16135  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16136  *
16137  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16138  * in common.  For example if @path is %NULL and @column is set, the tip
16139  * area will be set to the full area covered by @column.  See also
16140  * gtk_tooltip_set_tip_area().
16141  *
16142  * Note that if @path is not specified and @cell is set and part of a column
16143  * containing the expander, the tooltip might not show and hide at the correct
16144  * position.  In such cases @path must be set to the current node under the
16145  * mouse cursor for this function to operate correctly.
16146  *
16147  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16148  *
16149  * Since: 2.12
16150  */
16151 void
16152 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16153                                 GtkTooltip        *tooltip,
16154                                 GtkTreePath       *path,
16155                                 GtkTreeViewColumn *column,
16156                                 GtkCellRenderer   *cell)
16157 {
16158   GtkAllocation allocation;
16159   GdkRectangle rect;
16160
16161   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16162   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16163   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16164   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16165
16166   /* Determine x values. */
16167   if (column && cell)
16168     {
16169       GdkRectangle tmp;
16170       gint start, width;
16171
16172       /* We always pass in path here, whether it is NULL or not.
16173        * For cells in expander columns path must be specified so that
16174        * we can correctly account for the indentation.  This also means
16175        * that the tooltip is constrained vertically by the "Determine y
16176        * values" code below; this is not a real problem since cells actually
16177        * don't stretch vertically in constrast to columns.
16178        */
16179       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16180       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16181
16182       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16183                                                          tmp.x + start, 0,
16184                                                          &rect.x, NULL);
16185       rect.width = width;
16186     }
16187   else if (column)
16188     {
16189       GdkRectangle tmp;
16190
16191       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16192       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16193                                                          tmp.x, 0,
16194                                                          &rect.x, NULL);
16195       rect.width = tmp.width;
16196     }
16197   else
16198     {
16199       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16200       rect.x = 0;
16201       rect.width = allocation.width;
16202     }
16203
16204   /* Determine y values. */
16205   if (path)
16206     {
16207       GdkRectangle tmp;
16208
16209       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16210       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16211                                                          0, tmp.y,
16212                                                          NULL, &rect.y);
16213       rect.height = tmp.height;
16214     }
16215   else
16216     {
16217       rect.y = 0;
16218       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16219     }
16220
16221   gtk_tooltip_set_tip_area (tooltip, &rect);
16222 }
16223
16224 /**
16225  * gtk_tree_view_get_tooltip_context:
16226  * @tree_view: a #GtkTreeView
16227  * @x: (inout): the x coordinate (relative to widget coordinates)
16228  * @y: (inout): the y coordinate (relative to widget coordinates)
16229  * @keyboard_tip: whether this is a keyboard tooltip or not
16230  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
16231  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16232  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16233  *
16234  * This function is supposed to be used in a #GtkWidget::query-tooltip
16235  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16236  * which are received in the signal handler, should be passed to this
16237  * function without modification.
16238  *
16239  * The return value indicates whether there is a tree view row at the given
16240  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16241  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16242  * @model, @path and @iter which have been provided will be set to point to
16243  * that row and the corresponding model.  @x and @y will always be converted
16244  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16245  *
16246  * Return value: whether or not the given tooltip context points to a row.
16247  *
16248  * Since: 2.12
16249  */
16250 gboolean
16251 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16252                                    gint          *x,
16253                                    gint          *y,
16254                                    gboolean       keyboard_tip,
16255                                    GtkTreeModel **model,
16256                                    GtkTreePath  **path,
16257                                    GtkTreeIter   *iter)
16258 {
16259   GtkTreePath *tmppath = NULL;
16260
16261   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16262   g_return_val_if_fail (x != NULL, FALSE);
16263   g_return_val_if_fail (y != NULL, FALSE);
16264
16265   if (keyboard_tip)
16266     {
16267       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16268
16269       if (!tmppath)
16270         return FALSE;
16271     }
16272   else
16273     {
16274       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16275                                                          x, y);
16276
16277       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16278                                           &tmppath, NULL, NULL, NULL))
16279         return FALSE;
16280     }
16281
16282   if (model)
16283     *model = gtk_tree_view_get_model (tree_view);
16284
16285   if (iter)
16286     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16287                              iter, tmppath);
16288
16289   if (path)
16290     *path = tmppath;
16291   else
16292     gtk_tree_path_free (tmppath);
16293
16294   return TRUE;
16295 }
16296
16297 static gboolean
16298 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16299                                     gint        x,
16300                                     gint        y,
16301                                     gboolean    keyboard_tip,
16302                                     GtkTooltip *tooltip,
16303                                     gpointer    data)
16304 {
16305   GValue value = { 0, };
16306   GValue transformed = { 0, };
16307   GtkTreeIter iter;
16308   GtkTreePath *path;
16309   GtkTreeModel *model;
16310   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16311
16312   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16313                                           &x, &y,
16314                                           keyboard_tip,
16315                                           &model, &path, &iter))
16316     return FALSE;
16317
16318   gtk_tree_model_get_value (model, &iter,
16319                             tree_view->priv->tooltip_column, &value);
16320
16321   g_value_init (&transformed, G_TYPE_STRING);
16322
16323   if (!g_value_transform (&value, &transformed))
16324     {
16325       g_value_unset (&value);
16326       gtk_tree_path_free (path);
16327
16328       return FALSE;
16329     }
16330
16331   g_value_unset (&value);
16332
16333   if (!g_value_get_string (&transformed))
16334     {
16335       g_value_unset (&transformed);
16336       gtk_tree_path_free (path);
16337
16338       return FALSE;
16339     }
16340
16341   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16342   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16343
16344   gtk_tree_path_free (path);
16345   g_value_unset (&transformed);
16346
16347   return TRUE;
16348 }
16349
16350 /**
16351  * gtk_tree_view_set_tooltip_column:
16352  * @tree_view: a #GtkTreeView
16353  * @column: an integer, which is a valid column number for @tree_view's model
16354  *
16355  * If you only plan to have simple (text-only) tooltips on full rows, you
16356  * can use this function to have #GtkTreeView handle these automatically
16357  * for you. @column should be set to the column in @tree_view's model
16358  * containing the tooltip texts, or -1 to disable this feature.
16359  *
16360  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16361  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16362  *
16363  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16364  * so &amp;, &lt;, etc have to be escaped in the text.
16365  *
16366  * Since: 2.12
16367  */
16368 void
16369 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16370                                   gint         column)
16371 {
16372   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16373
16374   if (column == tree_view->priv->tooltip_column)
16375     return;
16376
16377   if (column == -1)
16378     {
16379       g_signal_handlers_disconnect_by_func (tree_view,
16380                                             gtk_tree_view_set_tooltip_query_cb,
16381                                             NULL);
16382       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16383     }
16384   else
16385     {
16386       if (tree_view->priv->tooltip_column == -1)
16387         {
16388           g_signal_connect (tree_view, "query-tooltip",
16389                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16390           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16391         }
16392     }
16393
16394   tree_view->priv->tooltip_column = column;
16395   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16396 }
16397
16398 /**
16399  * gtk_tree_view_get_tooltip_column:
16400  * @tree_view: a #GtkTreeView
16401  *
16402  * Returns the column of @tree_view's model which is being used for
16403  * displaying tooltips on @tree_view's rows.
16404  *
16405  * Return value: the index of the tooltip column that is currently being
16406  * used, or -1 if this is disabled.
16407  *
16408  * Since: 2.12
16409  */
16410 gint
16411 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16412 {
16413   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16414
16415   return tree_view->priv->tooltip_column;
16416 }