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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtktypebuiltins.h"
  52 #include "gtkmain.h"
  53 #include "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155  /* 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_extend;
 404   gint rubber_band_modify;
 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 modify_selection_pressed : 1;
 469   guint extend_selection_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 gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 668                                                            GtkMovementStep  step,
 669                                                            gint             count);
 670 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 671 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 672 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 673                                                            gboolean         start_editing);
 674 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 675 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 676                                                                gboolean         logical,
 677                                                                gboolean         expand,
 678                                                                gboolean         open_all);
 679 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 680 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 681                                                            GtkTreePath     *path,
 682                                                            GtkTreeIter     *iter,
 683                                                            gpointer         data);
 684 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 685                                                            GtkTreePath     *path,
 686                                                            GtkTreeIter     *iter,
 687                                                            gpointer         data);
 688 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 689                                                            GtkTreePath     *path,
 690                                                            GtkTreeIter     *iter,
 691                                                            gpointer         data);
 692 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 693                                                            GtkTreePath     *path,
 694                                                            gpointer         data);
 695 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 696                                                            GtkTreePath     *parent,
 697                                                            GtkTreeIter     *iter,
 698                                                            gint            *new_order,
 699                                                            gpointer         data);
 700
 701 /* Incremental reflow */
 702 static gboolean validate_row             (GtkTreeView *tree_view,
 703                                           GtkRBTree   *tree,
 704                                           GtkRBNode   *node,
 705                                           GtkTreeIter *iter,
 706                                           GtkTreePath *path);
 707 static void     validate_visible_area    (GtkTreeView *tree_view);
 708 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 709 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 710                                           gboolean     size_request);
 711 static gboolean validate_rows            (GtkTreeView *tree_view);
 712 static gboolean presize_handler_callback (gpointer     data);
 713 static void     install_presize_handler  (GtkTreeView *tree_view);
 714 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 715 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 716                                              GtkTreePath *path,
 717                                              gint         offset);
 718 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 719 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 720 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 721
 722 /* Internal functions */
 723 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 724                                                               GtkTreeViewColumn  *column);
 725 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 726 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 727                                                               guint               keyval,
 728                                                               guint               modmask,
 729                                                               gboolean            add_shifted_binding,
 730                                                               GtkMovementStep     step,
 731                                                               gint                count);
 732 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 733                                                               GtkRBTree          *tree);
 734 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 735                                                               GtkTreePath        *path,
 736                                                               const GdkRectangle *clip_rect);
 737 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 738                                                               GtkRBTree          *tree,
 739                                                               GtkRBNode          *node);
 740 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 741                                                               cairo_t            *cr,
 742                                                               GtkRBTree          *tree,
 743                                                               GtkRBNode          *node);
 744 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 745                                                               GtkRBTree          *tree,
 746                                                               gint               *x1,
 747                                                               gint               *x2);
 748 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 749                                                               gint                i,
 750                                                               gint               *x);
 751 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 752                                                               GtkTreeView        *tree_view);
 753 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 754                                                               GtkRBTree          *tree,
 755                                                               GtkTreeIter        *iter,
 756                                                               gint                depth,
 757                                                               gboolean            recurse);
 758 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 759                                                               GtkRBTree          *tree,
 760                                                               GtkRBNode          *node);
 761 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 762                                                               GtkTreeViewColumn  *column,
 763                                                               gboolean            focus_to_cell);
 764 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 765                                                               GdkEventMotion     *event);
 766 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 767 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 768                                                               gint                count);
 769 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 770                                                               gint                count);
 771 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 772                                                               gint                count);
 773 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 774                                                               gint                count);
 775 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 776                                                               GtkTreePath        *path,
 777                                                               GtkRBTree          *tree,
 778                                                               GtkRBNode          *node,
 779                                                               gboolean            animate);
 780 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 781                                                               GtkTreePath        *path,
 782                                                               GtkRBTree          *tree,
 783                                                               GtkRBNode          *node,
 784                                                               gboolean            open_all,
 785                                                               gboolean            animate);
 786 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 787                                                               GtkTreePath        *path,
 788                                                               gboolean            clear_and_select,
 789                                                               gboolean            clamp_node);
 790 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 791 static void     column_sizing_notify                         (GObject            *object,
 792                                                               GParamSpec         *pspec,
 793                                                               gpointer            data);
 794 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 795 static void     update_prelight                              (GtkTreeView        *tree_view,
 796                                                               int                 x,
 797                                                               int                 y);
 798
 799 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 800
 801 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 802                                                               GtkRBTree   *tree,
 803                                                               GtkRBNode   *node,
 804                                                               gint         vertical_separator);
 805 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 806                                                               GtkRBNode   *node,
 807                                                               gint         vertical_separator);
 808
 809 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 810                                                               GtkRBTree   *tree,
 811                                                               GtkRBNode   *node);
 812 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 813                                                               GtkRBNode   *node);
 814
 815 /* interactive search */
 816 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 817 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 818                                                          GtkTreeView      *tree_view,
 819                                                          GdkDevice        *device);
 820 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 821                                                          GtkWidget        *search_dialog,
 822                                                          gpointer          user_data);
 823 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 824                                                          GtkMenu          *menu,
 825                                                          gpointer          data);
 826 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 827                                                          GtkTreeView      *tree_view);
 828 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 829                                                          GtkTreeView      *tree_view);
 830 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 831 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 832                                                          gpointer          data);
 833 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 834                                                          GdkEventAny      *event,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 837                                                          GdkEventButton   *event,
 838                                                          GtkTreeView      *tree_view);
 839 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 840                                                          GdkEventScroll   *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 843                                                          GdkEventKey      *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 846                                                          GtkTreeView      *tree_view,
 847                                                          gboolean          up);
 848 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 849                                                          gint              column,
 850                                                          const gchar      *key,
 851                                                          GtkTreeIter      *iter,
 852                                                          gpointer          search_data);
 853 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 854                                                          GtkTreeSelection *selection,
 855                                                          GtkTreeIter      *iter,
 856                                                          const gchar      *text,
 857                                                          gint             *count,
 858                                                          gint              n);
 859 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 860                                                          GtkTreeView      *tree_view);
 861 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 862                                                          GtkWidget        *child_widget,
 863                                                          gint              x,
 864                                                          gint              y,
 865                                                          gint              width,
 866                                                          gint              height);
 867 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 868                                                          GtkTreePath      *cursor_path,
 869                                                          gboolean          edit_only);
 870 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 871                                                          gboolean     cancel_editing);
 872 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 873                                                              GdkDevice   *device,
 874                                                              gboolean     keybinding);
 875 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 876 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 877                                                          GtkTreeViewColumn *column,
 878                                                          gint               drop_position);
 879
 880 /* GtkBuildable */
 881 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 882                                                             GtkBuilder        *builder,
 883                                                             GObject           *child,
 884                                                             const gchar       *type);
 885 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 886                                                             GtkBuilder        *builder,
 887                                                             const gchar       *childname);
 888 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 889
 890 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 891 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 892                                                         GtkAdjustment *adjustment);
 893 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 894 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 895                                                         GtkAdjustment *adjustment);
 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   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1701 }
1702
1703 static void
1704 gtk_tree_view_init (GtkTreeView *tree_view)
1705 {
1706   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1707
1708   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1709   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1710
1711   tree_view->priv->show_expanders = TRUE;
1712   tree_view->priv->draw_keyfocus = TRUE;
1713   tree_view->priv->headers_visible = TRUE;
1714
1715   /* We need some padding */
1716   tree_view->priv->dy = 0;
1717   tree_view->priv->cursor_offset = 0;
1718   tree_view->priv->n_columns = 0;
1719   tree_view->priv->header_height = 1;
1720   tree_view->priv->x_drag = 0;
1721   tree_view->priv->drag_pos = -1;
1722   tree_view->priv->header_has_focus = FALSE;
1723   tree_view->priv->pressed_button = -1;
1724   tree_view->priv->press_start_x = -1;
1725   tree_view->priv->press_start_y = -1;
1726   tree_view->priv->reorderable = FALSE;
1727   tree_view->priv->presize_handler_timer = 0;
1728   tree_view->priv->scroll_sync_timer = 0;
1729   tree_view->priv->fixed_height = -1;
1730   tree_view->priv->fixed_height_mode = FALSE;
1731   tree_view->priv->fixed_height_check = 0;
1732   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1733   tree_view->priv->enable_search = TRUE;
1734   tree_view->priv->search_column = -1;
1735   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1736   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1737   tree_view->priv->search_custom_entry_set = FALSE;
1738   tree_view->priv->typeselect_flush_timeout = 0;
1739   tree_view->priv->init_hadjust_value = TRUE;
1740   tree_view->priv->width = 0;
1741
1742   tree_view->priv->hover_selection = FALSE;
1743   tree_view->priv->hover_expand = FALSE;
1744
1745   tree_view->priv->level_indentation = 0;
1746
1747   tree_view->priv->rubber_banding_enable = FALSE;
1748
1749   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1750   tree_view->priv->tree_lines_enabled = FALSE;
1751
1752   tree_view->priv->tooltip_column = -1;
1753
1754   tree_view->priv->post_validation_flag = FALSE;
1755
1756   tree_view->priv->last_button_x = -1;
1757   tree_view->priv->last_button_y = -1;
1758
1759   tree_view->priv->event_last_x = -10000;
1760   tree_view->priv->event_last_y = -10000;
1761
1762   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1763   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1764 }
1765
1766 \f
1767
1768 /* GObject Methods
1769  */
1770
1771 static void
1772 gtk_tree_view_set_property (GObject         *object,
1773                             guint            prop_id,
1774                             const GValue    *value,
1775                             GParamSpec      *pspec)
1776 {
1777   GtkTreeView *tree_view;
1778
1779   tree_view = GTK_TREE_VIEW (object);
1780
1781   switch (prop_id)
1782     {
1783     case PROP_MODEL:
1784       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1785       break;
1786     case PROP_HADJUSTMENT:
1787       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1788       break;
1789     case PROP_VADJUSTMENT:
1790       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HSCROLL_POLICY:
1793       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1794       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1795       break;
1796     case PROP_VSCROLL_POLICY:
1797       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1798       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1799       break;
1800     case PROP_HEADERS_VISIBLE:
1801       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1802       break;
1803     case PROP_HEADERS_CLICKABLE:
1804       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1805       break;
1806     case PROP_EXPANDER_COLUMN:
1807       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1808       break;
1809     case PROP_REORDERABLE:
1810       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_RULES_HINT:
1813       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1814       break;
1815     case PROP_ENABLE_SEARCH:
1816       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_SEARCH_COLUMN:
1819       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1820       break;
1821     case PROP_FIXED_HEIGHT_MODE:
1822       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_HOVER_SELECTION:
1825       tree_view->priv->hover_selection = g_value_get_boolean (value);
1826       break;
1827     case PROP_HOVER_EXPAND:
1828       tree_view->priv->hover_expand = g_value_get_boolean (value);
1829       break;
1830     case PROP_SHOW_EXPANDERS:
1831       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1832       break;
1833     case PROP_LEVEL_INDENTATION:
1834       tree_view->priv->level_indentation = g_value_get_int (value);
1835       break;
1836     case PROP_RUBBER_BANDING:
1837       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1838       break;
1839     case PROP_ENABLE_GRID_LINES:
1840       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1841       break;
1842     case PROP_ENABLE_TREE_LINES:
1843       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1844       break;
1845     case PROP_TOOLTIP_COLUMN:
1846       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1847       break;
1848     default:
1849       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1850       break;
1851     }
1852 }
1853
1854 static void
1855 gtk_tree_view_get_property (GObject    *object,
1856                             guint       prop_id,
1857                             GValue     *value,
1858                             GParamSpec *pspec)
1859 {
1860   GtkTreeView *tree_view;
1861
1862   tree_view = GTK_TREE_VIEW (object);
1863
1864   switch (prop_id)
1865     {
1866     case PROP_MODEL:
1867       g_value_set_object (value, tree_view->priv->model);
1868       break;
1869     case PROP_HADJUSTMENT:
1870       g_value_set_object (value, tree_view->priv->hadjustment);
1871       break;
1872     case PROP_VADJUSTMENT:
1873       g_value_set_object (value, tree_view->priv->vadjustment);
1874       break;
1875     case PROP_HSCROLL_POLICY:
1876       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1877       break;
1878     case PROP_VSCROLL_POLICY:
1879       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1880       break;
1881     case PROP_HEADERS_VISIBLE:
1882       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1883       break;
1884     case PROP_HEADERS_CLICKABLE:
1885       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1886       break;
1887     case PROP_EXPANDER_COLUMN:
1888       g_value_set_object (value, tree_view->priv->expander_column);
1889       break;
1890     case PROP_REORDERABLE:
1891       g_value_set_boolean (value, tree_view->priv->reorderable);
1892       break;
1893     case PROP_RULES_HINT:
1894       g_value_set_boolean (value, tree_view->priv->has_rules);
1895       break;
1896     case PROP_ENABLE_SEARCH:
1897       g_value_set_boolean (value, tree_view->priv->enable_search);
1898       break;
1899     case PROP_SEARCH_COLUMN:
1900       g_value_set_int (value, tree_view->priv->search_column);
1901       break;
1902     case PROP_FIXED_HEIGHT_MODE:
1903       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1904       break;
1905     case PROP_HOVER_SELECTION:
1906       g_value_set_boolean (value, tree_view->priv->hover_selection);
1907       break;
1908     case PROP_HOVER_EXPAND:
1909       g_value_set_boolean (value, tree_view->priv->hover_expand);
1910       break;
1911     case PROP_SHOW_EXPANDERS:
1912       g_value_set_boolean (value, tree_view->priv->show_expanders);
1913       break;
1914     case PROP_LEVEL_INDENTATION:
1915       g_value_set_int (value, tree_view->priv->level_indentation);
1916       break;
1917     case PROP_RUBBER_BANDING:
1918       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1919       break;
1920     case PROP_ENABLE_GRID_LINES:
1921       g_value_set_enum (value, tree_view->priv->grid_lines);
1922       break;
1923     case PROP_ENABLE_TREE_LINES:
1924       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1925       break;
1926     case PROP_TOOLTIP_COLUMN:
1927       g_value_set_int (value, tree_view->priv->tooltip_column);
1928       break;
1929     default:
1930       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1931       break;
1932     }
1933 }
1934
1935 static void
1936 gtk_tree_view_finalize (GObject *object)
1937 {
1938   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1939 }
1940
1941
1942 static GtkBuildableIface *parent_buildable_iface;
1943
1944 static void
1945 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1946 {
1947   parent_buildable_iface = g_type_interface_peek_parent (iface);
1948   iface->add_child = gtk_tree_view_buildable_add_child;
1949   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1950 }
1951
1952 static void
1953 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1954                                    GtkBuilder  *builder,
1955                                    GObject     *child,
1956                                    const gchar *type)
1957 {
1958   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1959 }
1960
1961 static GObject *
1962 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1963                                             GtkBuilder        *builder,
1964                                             const gchar       *childname)
1965 {
1966     if (strcmp (childname, "selection") == 0)
1967       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1968
1969     return parent_buildable_iface->get_internal_child (buildable,
1970                                                        builder,
1971                                                        childname);
1972 }
1973
1974 /* GtkWidget Methods
1975  */
1976
1977 static void
1978 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1979 {
1980   _gtk_rbtree_free (tree_view->priv->tree);
1981
1982   tree_view->priv->tree = NULL;
1983   tree_view->priv->button_pressed_node = NULL;
1984   tree_view->priv->button_pressed_tree = NULL;
1985   tree_view->priv->prelight_tree = NULL;
1986   tree_view->priv->prelight_node = NULL;
1987   tree_view->priv->expanded_collapsed_node = NULL;
1988   tree_view->priv->expanded_collapsed_tree = NULL;
1989 }
1990
1991 static void
1992 gtk_tree_view_destroy (GtkWidget *widget)
1993 {
1994   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1995   GList *list;
1996
1997   gtk_tree_view_stop_editing (tree_view, TRUE);
1998
1999   if (tree_view->priv->columns != NULL)
2000     {
2001       list = tree_view->priv->columns;
2002       while (list)
2003         {
2004           GtkTreeViewColumn *column;
2005           column = GTK_TREE_VIEW_COLUMN (list->data);
2006           list = list->next;
2007           gtk_tree_view_remove_column (tree_view, column);
2008         }
2009       tree_view->priv->columns = NULL;
2010     }
2011
2012   if (tree_view->priv->tree != NULL)
2013     {
2014       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2015
2016       gtk_tree_view_free_rbtree (tree_view);
2017     }
2018
2019   if (tree_view->priv->selection != NULL)
2020     {
2021       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2022       g_object_unref (tree_view->priv->selection);
2023       tree_view->priv->selection = NULL;
2024     }
2025
2026   if (tree_view->priv->scroll_to_path != NULL)
2027     {
2028       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2029       tree_view->priv->scroll_to_path = NULL;
2030     }
2031
2032   if (tree_view->priv->drag_dest_row != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2035       tree_view->priv->drag_dest_row = NULL;
2036     }
2037
2038   if (tree_view->priv->top_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->top_row);
2041       tree_view->priv->top_row = NULL;
2042     }
2043
2044   if (tree_view->priv->column_drop_func_data &&
2045       tree_view->priv->column_drop_func_data_destroy)
2046     {
2047       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2048       tree_view->priv->column_drop_func_data = NULL;
2049     }
2050
2051   if (tree_view->priv->destroy_count_destroy &&
2052       tree_view->priv->destroy_count_data)
2053     {
2054       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2055       tree_view->priv->destroy_count_data = NULL;
2056     }
2057
2058   gtk_tree_row_reference_free (tree_view->priv->cursor);
2059   tree_view->priv->cursor = NULL;
2060
2061   gtk_tree_row_reference_free (tree_view->priv->anchor);
2062   tree_view->priv->anchor = NULL;
2063
2064   /* destroy interactive search dialog */
2065   if (tree_view->priv->search_window)
2066     {
2067       gtk_widget_destroy (tree_view->priv->search_window);
2068       tree_view->priv->search_window = NULL;
2069       tree_view->priv->search_entry = NULL;
2070       if (tree_view->priv->typeselect_flush_timeout)
2071         {
2072           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2073           tree_view->priv->typeselect_flush_timeout = 0;
2074         }
2075     }
2076
2077   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2078     {
2079       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2080       tree_view->priv->search_user_data = NULL;
2081     }
2082
2083   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2084     {
2085       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2086       tree_view->priv->search_position_user_data = NULL;
2087     }
2088
2089   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2090     {
2091       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2092       tree_view->priv->row_separator_data = NULL;
2093     }
2094
2095   gtk_tree_view_set_model (tree_view, NULL);
2096
2097   if (tree_view->priv->hadjustment)
2098     {
2099       g_object_unref (tree_view->priv->hadjustment);
2100       tree_view->priv->hadjustment = NULL;
2101     }
2102   if (tree_view->priv->vadjustment)
2103     {
2104       g_object_unref (tree_view->priv->vadjustment);
2105       tree_view->priv->vadjustment = NULL;
2106     }
2107
2108   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2109 }
2110
2111 /* GtkWidget::map helper */
2112 static void
2113 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2114 {
2115   GList *list;
2116
2117   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2118
2119   if (tree_view->priv->headers_visible)
2120     {
2121       GtkTreeViewColumn *column;
2122       GtkWidget         *button;
2123       GdkWindow         *window;
2124
2125       for (list = tree_view->priv->columns; list; list = list->next)
2126         {
2127           column = list->data;
2128           button = gtk_tree_view_column_get_button (column);
2129
2130           if (gtk_tree_view_column_get_visible (column) && button)
2131             gtk_widget_show_now (button);
2132
2133           if (gtk_widget_get_visible (button) &&
2134               !gtk_widget_get_mapped (button))
2135             gtk_widget_map (button);
2136         }
2137       for (list = tree_view->priv->columns; list; list = list->next)
2138         {
2139           column = list->data;
2140           if (gtk_tree_view_column_get_visible (column) == FALSE)
2141             continue;
2142
2143           window = _gtk_tree_view_column_get_window (column);
2144           if (gtk_tree_view_column_get_resizable (column))
2145             {
2146               gdk_window_raise (window);
2147               gdk_window_show (window);
2148             }
2149           else
2150             gdk_window_hide (window);
2151         }
2152       gdk_window_show (tree_view->priv->header_window);
2153     }
2154 }
2155
2156 static void
2157 gtk_tree_view_map (GtkWidget *widget)
2158 {
2159   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2160   GList *tmp_list;
2161
2162   gtk_widget_set_mapped (widget, TRUE);
2163
2164   tmp_list = tree_view->priv->children;
2165   while (tmp_list)
2166     {
2167       GtkTreeViewChild *child = tmp_list->data;
2168       tmp_list = tmp_list->next;
2169
2170       if (gtk_widget_get_visible (child->widget))
2171         {
2172           if (!gtk_widget_get_mapped (child->widget))
2173             gtk_widget_map (child->widget);
2174         }
2175     }
2176   gdk_window_show (tree_view->priv->bin_window);
2177
2178   gtk_tree_view_map_buttons (tree_view);
2179
2180   gdk_window_show (gtk_widget_get_window (widget));
2181 }
2182
2183 static void
2184 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2185 {
2186   GtkStyleContext *context;
2187
2188   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2189
2190   gtk_style_context_save (context);
2191   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2192   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2193   gtk_style_context_restore (context);
2194
2195   gtk_style_context_set_background (context, tree_view->priv->header_window);
2196 }
2197
2198 static void
2199 gtk_tree_view_realize (GtkWidget *widget)
2200 {
2201   GtkAllocation allocation;
2202   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2203   GdkWindow *window;
2204   GdkWindowAttr attributes;
2205   GList *tmp_list;
2206   gint attributes_mask;
2207
2208   gtk_widget_set_realized (widget, TRUE);
2209
2210   gtk_widget_get_allocation (widget, &allocation);
2211
2212   /* Make the main, clipping window */
2213   attributes.window_type = GDK_WINDOW_CHILD;
2214   attributes.x = allocation.x;
2215   attributes.y = allocation.y;
2216   attributes.width = allocation.width;
2217   attributes.height = allocation.height;
2218   attributes.wclass = GDK_INPUT_OUTPUT;
2219   attributes.visual = gtk_widget_get_visual (widget);
2220   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2221
2222   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2223
2224   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2225                            &attributes, attributes_mask);
2226   gtk_widget_set_window (widget, window);
2227   gdk_window_set_user_data (window, widget);
2228
2229   gtk_widget_get_allocation (widget, &allocation);
2230
2231   /* Make the window for the tree */
2232   attributes.x = 0;
2233   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2234   attributes.width = MAX (tree_view->priv->width, allocation.width);
2235   attributes.height = allocation.height;
2236   attributes.event_mask = (GDK_EXPOSURE_MASK |
2237                            GDK_SCROLL_MASK |
2238                            GDK_POINTER_MOTION_MASK |
2239                            GDK_ENTER_NOTIFY_MASK |
2240                            GDK_LEAVE_NOTIFY_MASK |
2241                            GDK_BUTTON_PRESS_MASK |
2242                            GDK_BUTTON_RELEASE_MASK |
2243                            gtk_widget_get_events (widget));
2244
2245   tree_view->priv->bin_window = gdk_window_new (window,
2246                                                 &attributes, attributes_mask);
2247   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2248
2249   gtk_widget_get_allocation (widget, &allocation);
2250
2251   /* Make the column header window */
2252   attributes.x = 0;
2253   attributes.y = 0;
2254   attributes.width = MAX (tree_view->priv->width, allocation.width);
2255   attributes.height = tree_view->priv->header_height;
2256   attributes.event_mask = (GDK_EXPOSURE_MASK |
2257                            GDK_SCROLL_MASK |
2258                            GDK_ENTER_NOTIFY_MASK |
2259                            GDK_LEAVE_NOTIFY_MASK |
2260                            GDK_BUTTON_PRESS_MASK |
2261                            GDK_BUTTON_RELEASE_MASK |
2262                            GDK_KEY_PRESS_MASK |
2263                            GDK_KEY_RELEASE_MASK |
2264                            gtk_widget_get_events (widget));
2265
2266   tree_view->priv->header_window = gdk_window_new (window,
2267                                                    &attributes, attributes_mask);
2268   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2269
2270   gtk_tree_view_ensure_background (tree_view);
2271
2272   tmp_list = tree_view->priv->children;
2273   while (tmp_list)
2274     {
2275       GtkTreeViewChild *child = tmp_list->data;
2276       tmp_list = tmp_list->next;
2277
2278       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2279     }
2280
2281   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2282     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2283
2284   /* Need to call those here, since they create GCs */
2285   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2286   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2287
2288   install_presize_handler (tree_view);
2289 }
2290
2291 static void
2292 gtk_tree_view_unrealize (GtkWidget *widget)
2293 {
2294   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2295   GtkTreeViewPrivate *priv = tree_view->priv;
2296   GtkStyleContext *context;
2297   GList *list;
2298
2299   if (priv->scroll_timeout != 0)
2300     {
2301       g_source_remove (priv->scroll_timeout);
2302       priv->scroll_timeout = 0;
2303     }
2304
2305   if (priv->auto_expand_timeout != 0)
2306     {
2307       g_source_remove (priv->auto_expand_timeout);
2308       priv->auto_expand_timeout = 0;
2309     }
2310
2311   if (priv->open_dest_timeout != 0)
2312     {
2313       g_source_remove (priv->open_dest_timeout);
2314       priv->open_dest_timeout = 0;
2315     }
2316
2317   context = gtk_widget_get_style_context (widget);
2318   gtk_style_context_cancel_animations (context, NULL);
2319
2320   if (priv->presize_handler_timer != 0)
2321     {
2322       g_source_remove (priv->presize_handler_timer);
2323       priv->presize_handler_timer = 0;
2324     }
2325
2326   if (priv->validate_rows_timer != 0)
2327     {
2328       g_source_remove (priv->validate_rows_timer);
2329       priv->validate_rows_timer = 0;
2330     }
2331
2332   if (priv->scroll_sync_timer != 0)
2333     {
2334       g_source_remove (priv->scroll_sync_timer);
2335       priv->scroll_sync_timer = 0;
2336     }
2337
2338   if (priv->typeselect_flush_timeout)
2339     {
2340       g_source_remove (priv->typeselect_flush_timeout);
2341       priv->typeselect_flush_timeout = 0;
2342     }
2343
2344   for (list = priv->columns; list; list = list->next)
2345     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2346
2347   gdk_window_set_user_data (priv->bin_window, NULL);
2348   gdk_window_destroy (priv->bin_window);
2349   priv->bin_window = NULL;
2350
2351   gdk_window_set_user_data (priv->header_window, NULL);
2352   gdk_window_destroy (priv->header_window);
2353   priv->header_window = NULL;
2354
2355   if (priv->drag_window)
2356     {
2357       gdk_window_set_user_data (priv->drag_window, NULL);
2358       gdk_window_destroy (priv->drag_window);
2359       priv->drag_window = NULL;
2360     }
2361
2362   if (priv->drag_highlight_window)
2363     {
2364       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2365       gdk_window_destroy (priv->drag_highlight_window);
2366       priv->drag_highlight_window = NULL;
2367     }
2368
2369   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2370 }
2371
2372 /* GtkWidget::size_request helper */
2373 static void
2374 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2375 {
2376   GList *list;
2377
2378   tree_view->priv->header_height = 0;
2379
2380   for (list = tree_view->priv->columns; list; list = list->next)
2381     {
2382       GtkRequisition     requisition;
2383       GtkTreeViewColumn *column = list->data;
2384       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2385
2386       if (button == NULL)
2387         continue;
2388
2389       gtk_widget_get_preferred_size (button, &requisition, NULL);
2390       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2391     }
2392 }
2393
2394
2395 /* Called only by ::size_request */
2396 static void
2397 gtk_tree_view_update_size (GtkTreeView *tree_view)
2398 {
2399   GList *list;
2400   GtkTreeViewColumn *column;
2401   gint i;
2402
2403   if (tree_view->priv->model == NULL)
2404     {
2405       tree_view->priv->width = 0;
2406       tree_view->priv->prev_width = 0;
2407       tree_view->priv->height = 0;
2408       return;
2409     }
2410
2411   tree_view->priv->prev_width = tree_view->priv->width;
2412   tree_view->priv->width = 0;
2413
2414   /* keep this in sync with size_allocate below */
2415   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2416     {
2417       column = list->data;
2418       if (!gtk_tree_view_column_get_visible (column))
2419         continue;
2420
2421       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2422     }
2423
2424   if (tree_view->priv->tree == NULL)
2425     tree_view->priv->height = 0;
2426   else
2427     tree_view->priv->height = tree_view->priv->tree->root->offset;
2428 }
2429
2430 static void
2431 gtk_tree_view_size_request (GtkWidget      *widget,
2432                             GtkRequisition *requisition,
2433                             gboolean        may_validate)
2434 {
2435   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2436
2437   if (may_validate)
2438     {
2439       /* we validate some rows initially just to make sure we have some size.
2440        * In practice, with a lot of static lists, this should get a good width.
2441        */
2442       do_validate_rows (tree_view, FALSE);
2443     }
2444
2445   gtk_tree_view_size_request_columns (tree_view);
2446   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2447
2448   requisition->width = tree_view->priv->width;
2449   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2450 }
2451
2452 static void
2453 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2454                                    gint      *minimum,
2455                                    gint      *natural)
2456 {
2457   GtkRequisition requisition;
2458
2459   gtk_tree_view_size_request (widget, &requisition, TRUE);
2460
2461   *minimum = *natural = requisition.width;
2462 }
2463
2464 static void
2465 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2466                                     gint      *minimum,
2467                                     gint      *natural)
2468 {
2469   GtkRequisition requisition;
2470
2471   gtk_tree_view_size_request (widget, &requisition, TRUE);
2472
2473   *minimum = *natural = requisition.height;
2474 }
2475
2476 static int
2477 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2478 {
2479   int width = 0;
2480   GList *list;
2481   gboolean rtl;
2482
2483   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2484   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2485        list->data != tree_view->priv->expander_column;
2486        list = (rtl ? list->prev : list->next))
2487     {
2488       GtkTreeViewColumn *column = list->data;
2489
2490       width += gtk_tree_view_column_get_width (column);
2491     }
2492
2493   return width;
2494 }
2495
2496 /* GtkWidget::size_allocate helper */
2497 static void
2498 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2499                                      gboolean  *width_changed)
2500 {
2501   GtkTreeView *tree_view;
2502   GList *list, *first_column, *last_column;
2503   GtkTreeViewColumn *column;
2504   GtkAllocation widget_allocation;
2505   gint width = 0;
2506   gint extra, extra_per_column, extra_for_last;
2507   gint full_requested_width = 0;
2508   gint number_of_expand_columns = 0;
2509   gboolean rtl;
2510   gboolean update_expand;
2511
2512   tree_view = GTK_TREE_VIEW (widget);
2513
2514   for (last_column = g_list_last (tree_view->priv->columns);
2515        last_column &&
2516        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2517        last_column = last_column->prev)
2518     ;
2519   if (last_column == NULL)
2520     return;
2521
2522   for (first_column = g_list_first (tree_view->priv->columns);
2523        first_column &&
2524        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2525        first_column = first_column->next)
2526     ;
2527
2528   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2529
2530   /* find out how many extra space and expandable columns we have */
2531   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2532     {
2533       column = (GtkTreeViewColumn *)list->data;
2534
2535       if (!gtk_tree_view_column_get_visible (column))
2536         continue;
2537
2538       full_requested_width += _gtk_tree_view_column_request_width (column);
2539
2540       if (gtk_tree_view_column_get_expand (column))
2541         number_of_expand_columns++;
2542     }
2543
2544   /* Only update the expand value if the width of the widget has changed,
2545    * or the number of expand columns has changed, or if there are no expand
2546    * columns, or if we didn't have an size-allocation yet after the
2547    * last validated node.
2548    */
2549   update_expand = (width_changed && *width_changed == TRUE)
2550       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2551       || number_of_expand_columns == 0
2552       || tree_view->priv->post_validation_flag == TRUE;
2553
2554   tree_view->priv->post_validation_flag = FALSE;
2555
2556   gtk_widget_get_allocation (widget, &widget_allocation);
2557   if (!update_expand)
2558     {
2559       extra = tree_view->priv->last_extra_space;
2560       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2561     }
2562   else
2563     {
2564       extra = MAX (widget_allocation.width - full_requested_width, 0);
2565       extra_for_last = 0;
2566
2567       tree_view->priv->last_extra_space = extra;
2568     }
2569
2570   if (number_of_expand_columns > 0)
2571     extra_per_column = extra/number_of_expand_columns;
2572   else
2573     extra_per_column = 0;
2574
2575   if (update_expand)
2576     {
2577       tree_view->priv->last_extra_space_per_column = extra_per_column;
2578       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2579     }
2580
2581   for (list = (rtl ? last_column : first_column);
2582        list != (rtl ? first_column->prev : last_column->next);
2583        list = (rtl ? list->prev : list->next))
2584     {
2585       gint column_width;
2586
2587       column = list->data;
2588
2589       if (!gtk_tree_view_column_get_visible (column))
2590         continue;
2591
2592       /* We need to handle the dragged button specially.
2593        */
2594       if (column == tree_view->priv->drag_column)
2595         {
2596           GtkAllocation drag_allocation;
2597           GtkWidget    *button;
2598
2599           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2600
2601           drag_allocation.x = 0;
2602           drag_allocation.y = 0;
2603           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2604           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2605           gtk_widget_size_allocate (button, &drag_allocation);
2606           width += drag_allocation.width;
2607           continue;
2608         }
2609
2610       column_width = _gtk_tree_view_column_request_width (column);
2611
2612       if (gtk_tree_view_column_get_expand (column))
2613         {
2614           if (number_of_expand_columns == 1)
2615             {
2616               /* We add the remander to the last column as
2617                * */
2618               column_width += extra;
2619             }
2620           else
2621             {
2622               column_width += extra_per_column;
2623               extra -= extra_per_column;
2624               number_of_expand_columns --;
2625             }
2626         }
2627       else if (number_of_expand_columns == 0 &&
2628                list == last_column)
2629         {
2630           column_width += extra;
2631         }
2632
2633       /* In addition to expand, the last column can get even more
2634        * extra space so all available space is filled up.
2635        */
2636       if (extra_for_last > 0 && list == last_column)
2637         column_width += extra_for_last;
2638
2639       _gtk_tree_view_column_allocate (column, width, column_width);
2640
2641       width += column_width;
2642     }
2643
2644   /* We change the width here.  The user might have been resizing columns,
2645    * which changes the total width of the tree view.  This is of
2646    * importance for getting the horizontal scroll bar right.
2647    */
2648   if (tree_view->priv->width != width)
2649     {
2650       tree_view->priv->width = width;
2651       if (width_changed)
2652         *width_changed = TRUE;
2653     }
2654 }
2655
2656
2657 static void
2658 gtk_tree_view_size_allocate (GtkWidget     *widget,
2659                              GtkAllocation *allocation)
2660 {
2661   GtkAllocation widget_allocation;
2662   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2663   GList *tmp_list;
2664   gboolean width_changed = FALSE;
2665   gint old_width;
2666
2667   gtk_widget_get_allocation (widget, &widget_allocation);
2668   old_width = widget_allocation.width;
2669   if (allocation->width != widget_allocation.width)
2670     width_changed = TRUE;
2671
2672   gtk_widget_set_allocation (widget, allocation);
2673
2674   tmp_list = tree_view->priv->children;
2675
2676   while (tmp_list)
2677     {
2678       GtkAllocation allocation;
2679
2680       GtkTreeViewChild *child = tmp_list->data;
2681       tmp_list = tmp_list->next;
2682
2683       /* totally ignore our child's requisition */
2684       allocation.x = child->x;
2685       allocation.y = child->y;
2686       allocation.width = child->width;
2687       allocation.height = child->height;
2688       gtk_widget_size_allocate (child->widget, &allocation);
2689     }
2690
2691   /* We size-allocate the columns first because the width of the
2692    * tree view (used in updating the adjustments below) might change.
2693    */
2694   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2695
2696   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2697   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2698                                 allocation->width);
2699   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2700                                      allocation->width * 0.9);
2701   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2702                                      allocation->width * 0.1);
2703   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2704   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2705                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2706                                  tree_view->priv->width));
2707   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2708
2709   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2710     {
2711       if (allocation->width < tree_view->priv->width)
2712         {
2713           if (tree_view->priv->init_hadjust_value)
2714             {
2715               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2716                                         MAX (tree_view->priv->width -
2717                                              allocation->width, 0));
2718               tree_view->priv->init_hadjust_value = FALSE;
2719             }
2720           else if (allocation->width != old_width)
2721             {
2722               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2723                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2724                                                0,
2725                                                tree_view->priv->width - allocation->width));
2726             }
2727           else
2728             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2729                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2730                                              0,
2731                                              tree_view->priv->width - allocation->width));
2732         }
2733       else
2734         {
2735           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2736           tree_view->priv->init_hadjust_value = TRUE;
2737         }
2738     }
2739   else
2740     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2741       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2742                                 MAX (tree_view->priv->width -
2743                                      allocation->width, 0));
2744
2745   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2746   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2747                                 allocation->height -
2748                                 gtk_tree_view_get_effective_header_height (tree_view));
2749   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2750                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2751   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2752                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2753   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2754   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2755                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2756                                  tree_view->priv->height));
2757   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2758
2759   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2760   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2761     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2762   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2763     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2764                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2765   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2766     gtk_tree_view_top_row_to_dy (tree_view);
2767   else
2768     gtk_tree_view_dy_to_top_row (tree_view);
2769
2770   if (gtk_widget_get_realized (widget))
2771     {
2772       gdk_window_move_resize (gtk_widget_get_window (widget),
2773                               allocation->x, allocation->y,
2774                               allocation->width, allocation->height);
2775       gdk_window_move_resize (tree_view->priv->header_window,
2776                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2777                               0,
2778                               MAX (tree_view->priv->width, allocation->width),
2779                               tree_view->priv->header_height);
2780       gdk_window_move_resize (tree_view->priv->bin_window,
2781                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2782                               gtk_tree_view_get_effective_header_height (tree_view),
2783                               MAX (tree_view->priv->width, allocation->width),
2784                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2785
2786       if (tree_view->priv->tree == NULL)
2787         invalidate_empty_focus (tree_view);
2788
2789       if (width_changed && tree_view->priv->expander_column)
2790         {
2791           /* Might seem awkward, but is the best heuristic I could come up
2792            * with.  Only if the width of the columns before the expander
2793            * changes, we will update the prelight status.  It is this
2794            * width that makes the expander move vertically.  Always updating
2795            * prelight status causes trouble with hover selections.
2796            */
2797           gint width_before_expander;
2798
2799           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2800
2801           if (tree_view->priv->prev_width_before_expander
2802               != width_before_expander)
2803               update_prelight (tree_view,
2804                                tree_view->priv->event_last_x,
2805                                tree_view->priv->event_last_y);
2806
2807           tree_view->priv->prev_width_before_expander = width_before_expander;
2808         }
2809     }
2810 }
2811
2812 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2813 static void
2814 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2815 {
2816   GtkWidget *widget = GTK_WIDGET (tree_view);
2817
2818   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2819     gtk_widget_grab_focus (widget);
2820   tree_view->priv->draw_keyfocus = 0;
2821 }
2822
2823 static inline gboolean
2824 row_is_separator (GtkTreeView *tree_view,
2825                   GtkTreeIter *iter,
2826                   GtkTreePath *path)
2827 {
2828   gboolean is_separator = FALSE;
2829
2830   if (tree_view->priv->row_separator_func)
2831     {
2832       GtkTreeIter tmpiter;
2833
2834       if (iter)
2835         tmpiter = *iter;
2836       else
2837         {
2838           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2839             return FALSE;
2840         }
2841
2842       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2843                                                           &tmpiter,
2844                                                           tree_view->priv->row_separator_data);
2845     }
2846
2847   return is_separator;
2848 }
2849
2850 static gboolean
2851 gtk_tree_view_button_press (GtkWidget      *widget,
2852                             GdkEventButton *event)
2853 {
2854   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2855   GList *list;
2856   GtkTreeViewColumn *column = NULL;
2857   gint i;
2858   GdkRectangle background_area;
2859   GdkRectangle cell_area;
2860   gint vertical_separator;
2861   gint horizontal_separator;
2862   gboolean path_is_selectable;
2863   gboolean rtl;
2864
2865   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2866   gtk_tree_view_stop_editing (tree_view, FALSE);
2867   gtk_widget_style_get (widget,
2868                         "vertical-separator", &vertical_separator,
2869                         "horizontal-separator", &horizontal_separator,
2870                         NULL);
2871
2872   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2873    * we're done handling the button press.
2874    */
2875
2876   if (event->window == tree_view->priv->bin_window)
2877     {
2878       GtkRBNode *node;
2879       GtkRBTree *tree;
2880       GtkTreePath *path;
2881       gint depth;
2882       gint new_y;
2883       gint y_offset;
2884       gint dval;
2885       gint pre_val, aft_val;
2886       GtkTreeViewColumn *column = NULL;
2887       gint column_handled_click = FALSE;
2888       gboolean row_double_click = FALSE;
2889       gboolean rtl;
2890       gboolean node_selected;
2891       GdkModifierType extend_mod_mask;
2892       GdkModifierType modify_mod_mask;
2893
2894       /* Empty tree? */
2895       if (tree_view->priv->tree == NULL)
2896         {
2897           grab_focus_and_unset_draw_keyfocus (tree_view);
2898           return TRUE;
2899         }
2900
2901       /* are we in an arrow? */
2902       if (tree_view->priv->prelight_node &&
2903           tree_view->priv->arrow_prelit &&
2904           gtk_tree_view_draw_expanders (tree_view))
2905         {
2906           if (event->button == 1)
2907             {
2908               gtk_grab_add (widget);
2909               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2910               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2911               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2912                                               tree_view->priv->prelight_tree,
2913                                               tree_view->priv->prelight_node);
2914             }
2915
2916           grab_focus_and_unset_draw_keyfocus (tree_view);
2917           return TRUE;
2918         }
2919
2920       /* find the node that was clicked */
2921       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2922       if (new_y < 0)
2923         new_y = 0;
2924       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2925
2926       if (node == NULL)
2927         {
2928           /* We clicked in dead space */
2929           grab_focus_and_unset_draw_keyfocus (tree_view);
2930           return TRUE;
2931         }
2932
2933       /* Get the path and the node */
2934       path = _gtk_tree_path_new_from_rbtree (tree, node);
2935       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2936
2937       if (!path_is_selectable)
2938         {
2939           gtk_tree_path_free (path);
2940           grab_focus_and_unset_draw_keyfocus (tree_view);
2941           return TRUE;
2942         }
2943
2944       depth = gtk_tree_path_get_depth (path);
2945       background_area.y = y_offset + event->y;
2946       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2947       background_area.x = 0;
2948
2949
2950       /* Let the column have a chance at selecting it. */
2951       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2952       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2953            list; list = (rtl ? list->prev : list->next))
2954         {
2955           GtkTreeViewColumn *candidate = list->data;
2956
2957           if (!gtk_tree_view_column_get_visible (candidate))
2958             continue;
2959
2960           background_area.width = gtk_tree_view_column_get_width (candidate);
2961           if ((background_area.x > (gint) event->x) ||
2962               (background_area.x + background_area.width <= (gint) event->x))
2963             {
2964               background_area.x += background_area.width;
2965               continue;
2966             }
2967
2968           /* we found the focus column */
2969           column = candidate;
2970           cell_area = background_area;
2971           cell_area.width -= horizontal_separator;
2972           cell_area.height -= vertical_separator;
2973           cell_area.x += horizontal_separator/2;
2974           cell_area.y += vertical_separator/2;
2975           if (gtk_tree_view_is_expander_column (tree_view, column))
2976             {
2977               if (!rtl)
2978                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2979               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2980
2981               if (gtk_tree_view_draw_expanders (tree_view))
2982                 {
2983                   if (!rtl)
2984                     cell_area.x += depth * tree_view->priv->expander_size;
2985                   cell_area.width -= depth * tree_view->priv->expander_size;
2986                 }
2987             }
2988           break;
2989         }
2990
2991       if (column == NULL)
2992         {
2993           gtk_tree_path_free (path);
2994           grab_focus_and_unset_draw_keyfocus (tree_view);
2995           return FALSE;
2996         }
2997
2998       tree_view->priv->focus_column = column;
2999
3000       /* decide if we edit */
3001       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3002           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3003         {
3004           GtkTreePath *anchor;
3005           GtkTreeIter iter;
3006
3007           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3008           gtk_tree_view_column_cell_set_cell_data (column,
3009                                                    tree_view->priv->model,
3010                                                    &iter,
3011                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3012                                                    node->children?TRUE:FALSE);
3013
3014           if (tree_view->priv->anchor)
3015             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3016           else
3017             anchor = NULL;
3018
3019           if ((anchor && !gtk_tree_path_compare (anchor, path))
3020               || !_gtk_tree_view_column_has_editable_cell (column))
3021             {
3022               GtkCellEditable *cell_editable = NULL;
3023
3024               /* FIXME: get the right flags */
3025               guint flags = 0;
3026
3027               if (_gtk_tree_view_column_cell_event (column,
3028                                                     (GdkEvent *)event,
3029                                                     &cell_area, flags))
3030                 {
3031                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3032                   cell_editable = gtk_cell_area_get_edit_widget (area);
3033
3034                   if (cell_editable != NULL)
3035                     {
3036                       gtk_tree_path_free (path);
3037                       gtk_tree_path_free (anchor);
3038                       return TRUE;
3039                     }
3040                   column_handled_click = TRUE;
3041                 }
3042             }
3043           if (anchor)
3044             gtk_tree_path_free (anchor);
3045         }
3046
3047       extend_mod_mask =
3048         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3049
3050       modify_mod_mask =
3051         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
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 & modify_mod_mask) == modify_mod_mask)
3064             tree_view->priv->modify_selection_pressed = TRUE;
3065           if ((event->state & extend_mod_mask) == extend_mod_mask)
3066             tree_view->priv->extend_selection_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 & modify_mod_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 & extend_mod_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->modify_selection_pressed = FALSE;
3098           tree_view->priv->extend_selection_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 & modify_mod_mask) == modify_mod_mask)
3131                 tree_view->priv->rubber_band_modify = TRUE;
3132               if ((event->state & extend_mod_mask) == extend_mod_mask)
3133                 tree_view->priv->rubber_band_extend = 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           gpointer drag_data;
3202
3203           if (event->type == GDK_2BUTTON_PRESS &&
3204               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3205             {
3206               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3207               _gtk_tree_view_column_autosize (tree_view, column);
3208               return TRUE;
3209             }
3210
3211           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3212                                _gtk_tree_view_column_get_window (column),
3213                                GDK_OWNERSHIP_NONE,
3214                                FALSE,
3215                                GDK_POINTER_MOTION_HINT_MASK
3216                                 | GDK_BUTTON1_MOTION_MASK
3217                                 | GDK_BUTTON_RELEASE_MASK,
3218                                NULL,
3219                                event->time) != GDK_GRAB_SUCCESS)
3220             return FALSE;
3221
3222           gtk_grab_add (widget);
3223           tree_view->priv->in_column_resize = TRUE;
3224
3225           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3226                                                    tree_view->priv->last_extra_space_per_column);
3227
3228           /* block attached dnd signal handler */
3229           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3230           if (drag_data)
3231             g_signal_handlers_block_matched (widget,
3232                                              G_SIGNAL_MATCH_DATA,
3233                                              0, 0, NULL, NULL,
3234                                              drag_data);
3235
3236           tree_view->priv->drag_pos = i;
3237           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3238
3239           if (!gtk_widget_has_focus (widget))
3240             gtk_widget_grab_focus (widget);
3241
3242           return TRUE;
3243         }
3244     }
3245   return FALSE;
3246 }
3247
3248 /* GtkWidget::button_release_event helper */
3249 static gboolean
3250 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3251                                           GdkEventButton *event)
3252 {
3253   GtkTreeView *tree_view;
3254   GtkWidget *button;
3255   GList *l;
3256   gboolean rtl;
3257   GdkDevice *device, *other;
3258
3259   tree_view = GTK_TREE_VIEW (widget);
3260
3261   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3262   device = gdk_event_get_device ((GdkEvent*)event);
3263   other = gdk_device_get_associated_device (device);
3264   gdk_device_ungrab (device, event->time);
3265   gdk_device_ungrab (other, event->time);
3266
3267   /* Move the button back */
3268   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3269   g_object_ref (button);
3270   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3271   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3272   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3273   g_object_unref (button);
3274   gtk_widget_queue_resize (widget);
3275   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3276     {
3277       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3278       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3279     }
3280   else
3281     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282
3283   gtk_widget_grab_focus (button);
3284
3285   if (rtl)
3286     {
3287       if (tree_view->priv->cur_reorder &&
3288           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3289         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3290                                          tree_view->priv->cur_reorder->right_column);
3291     }
3292   else
3293     {
3294       if (tree_view->priv->cur_reorder &&
3295           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3296         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3297                                          tree_view->priv->cur_reorder->left_column);
3298     }
3299   tree_view->priv->drag_column = NULL;
3300   gdk_window_hide (tree_view->priv->drag_window);
3301
3302   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3303     g_slice_free (GtkTreeViewColumnReorder, l->data);
3304   g_list_free (tree_view->priv->column_drag_info);
3305   tree_view->priv->column_drag_info = NULL;
3306   tree_view->priv->cur_reorder = NULL;
3307
3308   if (tree_view->priv->drag_highlight_window)
3309     gdk_window_hide (tree_view->priv->drag_highlight_window);
3310
3311   /* Reset our flags */
3312   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3313   tree_view->priv->in_column_drag = FALSE;
3314
3315   return TRUE;
3316 }
3317
3318 /* GtkWidget::button_release_event helper */
3319 static gboolean
3320 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3321                                             GdkEventButton *event)
3322 {
3323   GtkTreeView *tree_view;
3324   gpointer drag_data;
3325
3326   tree_view = GTK_TREE_VIEW (widget);
3327
3328   tree_view->priv->drag_pos = -1;
3329
3330   /* unblock attached dnd signal handler */
3331   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3332   if (drag_data)
3333     g_signal_handlers_unblock_matched (widget,
3334                                        G_SIGNAL_MATCH_DATA,
3335                                        0, 0, NULL, NULL,
3336                                        drag_data);
3337
3338   tree_view->priv->in_column_resize = FALSE;
3339   gtk_grab_remove (widget);
3340   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3341   return TRUE;
3342 }
3343
3344 static gboolean
3345 gtk_tree_view_button_release (GtkWidget      *widget,
3346                               GdkEventButton *event)
3347 {
3348   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3349
3350   if (tree_view->priv->in_column_drag)
3351     return gtk_tree_view_button_release_drag_column (widget, event);
3352
3353   if (tree_view->priv->rubber_band_status)
3354     gtk_tree_view_stop_rubber_band (tree_view);
3355
3356   if (tree_view->priv->pressed_button == event->button)
3357     tree_view->priv->pressed_button = -1;
3358
3359   if (tree_view->priv->in_column_resize)
3360     return gtk_tree_view_button_release_column_resize (widget, event);
3361
3362   if (tree_view->priv->button_pressed_node == NULL)
3363     return FALSE;
3364
3365   if (event->button == 1)
3366     {
3367       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3368           tree_view->priv->arrow_prelit)
3369         {
3370           GtkTreePath *path = NULL;
3371
3372           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3373                                                  tree_view->priv->button_pressed_node);
3374           /* Actually activate the node */
3375           if (tree_view->priv->button_pressed_node->children == NULL)
3376             gtk_tree_view_real_expand_row (tree_view, path,
3377                                            tree_view->priv->button_pressed_tree,
3378                                            tree_view->priv->button_pressed_node,
3379                                            FALSE, TRUE);
3380           else
3381             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3382                                              tree_view->priv->button_pressed_tree,
3383                                              tree_view->priv->button_pressed_node, TRUE);
3384           gtk_tree_path_free (path);
3385         }
3386
3387       gtk_grab_remove (widget);
3388       tree_view->priv->button_pressed_tree = NULL;
3389       tree_view->priv->button_pressed_node = NULL;
3390     }
3391
3392   return TRUE;
3393 }
3394
3395 static gboolean
3396 gtk_tree_view_grab_broken (GtkWidget          *widget,
3397                            GdkEventGrabBroken *event)
3398 {
3399   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3400
3401   if (tree_view->priv->in_column_drag)
3402     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3403
3404   if (tree_view->priv->in_column_resize)
3405     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3406
3407   return TRUE;
3408 }
3409
3410 #if 0
3411 static gboolean
3412 gtk_tree_view_configure (GtkWidget *widget,
3413                          GdkEventConfigure *event)
3414 {
3415   GtkTreeView *tree_view;
3416
3417   tree_view = GTK_TREE_VIEW (widget);
3418   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3419
3420   return FALSE;
3421 }
3422 #endif
3423
3424 /* GtkWidget::motion_event function set.
3425  */
3426
3427 static gboolean
3428 coords_are_over_arrow (GtkTreeView *tree_view,
3429                        GtkRBTree   *tree,
3430                        GtkRBNode   *node,
3431                        /* these are in bin window coords */
3432                        gint         x,
3433                        gint         y)
3434 {
3435   GdkRectangle arrow;
3436   gint x2;
3437
3438   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3439     return FALSE;
3440
3441   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3442     return FALSE;
3443
3444   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3445   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3446
3447   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3448
3449   arrow.width = x2 - arrow.x;
3450
3451   return (x >= arrow.x &&
3452           x < (arrow.x + arrow.width) &&
3453           y >= arrow.y &&
3454           y < (arrow.y + arrow.height));
3455 }
3456
3457 static gboolean
3458 auto_expand_timeout (gpointer data)
3459 {
3460   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3461   GtkTreePath *path;
3462
3463   if (tree_view->priv->prelight_node)
3464     {
3465       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3466                                              tree_view->priv->prelight_node);
3467
3468       if (tree_view->priv->prelight_node->children)
3469         gtk_tree_view_collapse_row (tree_view, path);
3470       else
3471         gtk_tree_view_expand_row (tree_view, path, FALSE);
3472
3473       gtk_tree_path_free (path);
3474     }
3475
3476   tree_view->priv->auto_expand_timeout = 0;
3477
3478   return FALSE;
3479 }
3480
3481 static void
3482 remove_auto_expand_timeout (GtkTreeView *tree_view)
3483 {
3484   if (tree_view->priv->auto_expand_timeout != 0)
3485     {
3486       g_source_remove (tree_view->priv->auto_expand_timeout);
3487       tree_view->priv->auto_expand_timeout = 0;
3488     }
3489 }
3490
3491 static void
3492 do_prelight (GtkTreeView *tree_view,
3493              GtkRBTree   *tree,
3494              GtkRBNode   *node,
3495              /* these are in bin_window coords */
3496              gint         x,
3497              gint         y)
3498 {
3499   if (tree_view->priv->prelight_tree == tree &&
3500       tree_view->priv->prelight_node == node)
3501     {
3502       /*  We are still on the same node,
3503           but we might need to take care of the arrow  */
3504
3505       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3506         {
3507           gboolean over_arrow;
3508
3509           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3510
3511           if (over_arrow != tree_view->priv->arrow_prelit)
3512             {
3513               if (over_arrow)
3514                 tree_view->priv->arrow_prelit = TRUE;
3515               else
3516                 tree_view->priv->arrow_prelit = FALSE;
3517
3518               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3519             }
3520         }
3521
3522       return;
3523     }
3524
3525   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3526     {
3527       /*  Unprelight the old node and arrow  */
3528
3529       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3530                              GTK_RBNODE_IS_PRELIT);
3531
3532       if (tree_view->priv->arrow_prelit
3533           && gtk_tree_view_draw_expanders (tree_view))
3534         {
3535           tree_view->priv->arrow_prelit = FALSE;
3536
3537           gtk_tree_view_queue_draw_arrow (tree_view,
3538                                           tree_view->priv->prelight_tree,
3539                                           tree_view->priv->prelight_node);
3540         }
3541
3542       _gtk_tree_view_queue_draw_node (tree_view,
3543                                       tree_view->priv->prelight_tree,
3544                                       tree_view->priv->prelight_node,
3545                                       NULL);
3546     }
3547
3548
3549   if (tree_view->priv->hover_expand)
3550     remove_auto_expand_timeout (tree_view);
3551
3552   /*  Set the new prelight values  */
3553   tree_view->priv->prelight_node = node;
3554   tree_view->priv->prelight_tree = tree;
3555
3556   if (!node || !tree)
3557     return;
3558
3559   /*  Prelight the new node and arrow  */
3560
3561   if (gtk_tree_view_draw_expanders (tree_view)
3562       && coords_are_over_arrow (tree_view, tree, node, x, y))
3563     {
3564       tree_view->priv->arrow_prelit = TRUE;
3565
3566       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3567     }
3568
3569   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3570
3571   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3572
3573   if (tree_view->priv->hover_expand)
3574     {
3575       tree_view->priv->auto_expand_timeout =
3576         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3577     }
3578 }
3579
3580 static void
3581 prelight_or_select (GtkTreeView *tree_view,
3582                     GtkRBTree   *tree,
3583                     GtkRBNode   *node,
3584                     /* these are in bin_window coords */
3585                     gint         x,
3586                     gint         y)
3587 {
3588   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3589
3590   if (tree_view->priv->hover_selection &&
3591       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3592       !(tree_view->priv->edited_column &&
3593         gtk_cell_area_get_edit_widget
3594         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3595     {
3596       if (node)
3597         {
3598           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3599             {
3600               GtkTreePath *path;
3601
3602               path = _gtk_tree_path_new_from_rbtree (tree, node);
3603               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3604               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3605                 {
3606                   tree_view->priv->draw_keyfocus = FALSE;
3607                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3608                 }
3609               gtk_tree_path_free (path);
3610             }
3611         }
3612
3613       else if (mode == GTK_SELECTION_SINGLE)
3614         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3615     }
3616
3617     do_prelight (tree_view, tree, node, x, y);
3618 }
3619
3620 static void
3621 ensure_unprelighted (GtkTreeView *tree_view)
3622 {
3623   do_prelight (tree_view,
3624                NULL, NULL,
3625                -1000, -1000); /* coords not possibly over an arrow */
3626
3627   g_assert (tree_view->priv->prelight_node == NULL);
3628 }
3629
3630 static void
3631 update_prelight (GtkTreeView *tree_view,
3632                  gint         x,
3633                  gint         y)
3634 {
3635   int new_y;
3636   GtkRBTree *tree;
3637   GtkRBNode *node;
3638
3639   if (tree_view->priv->tree == NULL)
3640     return;
3641
3642   if (x == -10000)
3643     {
3644       ensure_unprelighted (tree_view);
3645       return;
3646     }
3647
3648   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3649   if (new_y < 0)
3650     new_y = 0;
3651
3652   _gtk_rbtree_find_offset (tree_view->priv->tree,
3653                            new_y, &tree, &node);
3654
3655   if (node)
3656     prelight_or_select (tree_view, tree, node, x, y);
3657 }
3658
3659
3660
3661
3662 /* Our motion arrow is either a box (in the case of the original spot)
3663  * or an arrow.  It is expander_size wide.
3664  */
3665 /*
3666  * 11111111111111
3667  * 01111111111110
3668  * 00111111111100
3669  * 00011111111000
3670  * 00001111110000
3671  * 00000111100000
3672  * 00000111100000
3673  * 00000111100000
3674  * ~ ~ ~ ~ ~ ~ ~
3675  * 00000111100000
3676  * 00000111100000
3677  * 00000111100000
3678  * 00001111110000
3679  * 00011111111000
3680  * 00111111111100
3681  * 01111111111110
3682  * 11111111111111
3683  */
3684
3685 static void
3686 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3687 {
3688   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3689   GtkWidget *widget = GTK_WIDGET (tree_view);
3690   cairo_surface_t *mask_image;
3691   cairo_region_t *mask_region;
3692   gint x;
3693   gint y;
3694   gint width;
3695   gint height;
3696   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3697   GdkWindowAttr attributes;
3698   guint attributes_mask;
3699   cairo_t *cr;
3700
3701   if (!reorder ||
3702       reorder->left_column == tree_view->priv->drag_column ||
3703       reorder->right_column == tree_view->priv->drag_column)
3704     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3705   else if (reorder->left_column || reorder->right_column)
3706     {
3707       GtkAllocation left_allocation, right_allocation;
3708       GdkRectangle visible_rect;
3709       GtkWidget *button;
3710
3711       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3712       if (reorder->left_column)
3713         {
3714           button = gtk_tree_view_column_get_button (reorder->left_column);
3715           gtk_widget_get_allocation (button, &left_allocation);
3716           x = left_allocation.x + left_allocation.width;
3717         }
3718       else
3719         {
3720           button = gtk_tree_view_column_get_button (reorder->right_column);
3721           gtk_widget_get_allocation (button, &right_allocation);
3722           x = right_allocation.x;
3723         }
3724
3725       if (x < visible_rect.x)
3726         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3727       else if (x > visible_rect.x + visible_rect.width)
3728         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3729       else
3730         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3731     }
3732
3733   /* We want to draw the rectangle over the initial location. */
3734   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3735     {
3736       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3737         {
3738           GtkAllocation drag_allocation;
3739           GtkWidget    *button;
3740
3741           if (tree_view->priv->drag_highlight_window)
3742             {
3743               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3744                                         NULL);
3745               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3746             }
3747
3748           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3749           attributes.window_type = GDK_WINDOW_CHILD;
3750           attributes.wclass = GDK_INPUT_OUTPUT;
3751           attributes.x = tree_view->priv->drag_column_x;
3752           attributes.y = 0;
3753           gtk_widget_get_allocation (button, &drag_allocation);
3754           width = attributes.width = drag_allocation.width;
3755           height = attributes.height = drag_allocation.height;
3756           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3757           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3758           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3759           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3760           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3761
3762           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3763           cr = cairo_create (mask_image);
3764
3765           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3766           cairo_stroke (cr);
3767           cairo_destroy (cr);
3768
3769           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3770           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3771                                            mask_region, 0, 0);
3772
3773           cairo_region_destroy (mask_region);
3774           cairo_surface_destroy (mask_image);
3775
3776           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3777         }
3778     }
3779   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3780     {
3781       GtkAllocation button_allocation;
3782       GtkWidget    *button;
3783
3784       width = tree_view->priv->expander_size;
3785
3786       /* Get x, y, width, height of arrow */
3787       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3788       if (reorder->left_column)
3789         {
3790           button = gtk_tree_view_column_get_button (reorder->left_column);
3791           gtk_widget_get_allocation (button, &button_allocation);
3792           x += button_allocation.x + button_allocation.width - width/2;
3793           height = button_allocation.height;
3794         }
3795       else
3796         {
3797           button = gtk_tree_view_column_get_button (reorder->right_column);
3798           gtk_widget_get_allocation (button, &button_allocation);
3799           x += button_allocation.x - width/2;
3800           height = button_allocation.height;
3801         }
3802       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3803       height += tree_view->priv->expander_size;
3804
3805       /* Create the new window */
3806       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3807         {
3808           if (tree_view->priv->drag_highlight_window)
3809             {
3810               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3811                                         NULL);
3812               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3813             }
3814
3815           attributes.window_type = GDK_WINDOW_TEMP;
3816           attributes.wclass = GDK_INPUT_OUTPUT;
3817           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3818           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3819           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3820           attributes.x = x;
3821           attributes.y = y;
3822           attributes.width = width;
3823           attributes.height = height;
3824           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3825                                                                    &attributes, attributes_mask);
3826           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3827
3828           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3829
3830           cr = cairo_create (mask_image);
3831           cairo_move_to (cr, 0, 0);
3832           cairo_line_to (cr, width, 0);
3833           cairo_line_to (cr, width / 2., width / 2);
3834           cairo_move_to (cr, 0, height);
3835           cairo_line_to (cr, width, height);
3836           cairo_line_to (cr, width / 2., height - width / 2.);
3837           cairo_fill (cr);
3838           cairo_destroy (cr);
3839
3840           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3841           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3842                                            mask_region, 0, 0);
3843
3844           cairo_region_destroy (mask_region);
3845           cairo_surface_destroy (mask_image);
3846         }
3847
3848       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3849       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3850     }
3851   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3852            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3853     {
3854       GtkAllocation allocation;
3855       GtkWidget    *button;
3856
3857       width = tree_view->priv->expander_size;
3858
3859       /* Get x, y, width, height of arrow */
3860       width = width/2; /* remember, the arrow only takes half the available width */
3861       gdk_window_get_origin (gtk_widget_get_window (widget),
3862                              &x, &y);
3863       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3864         {
3865           gtk_widget_get_allocation (widget, &allocation);
3866           x += allocation.width - width;
3867         }
3868
3869       if (reorder->left_column)
3870         {
3871           button = gtk_tree_view_column_get_button (reorder->left_column);
3872           gtk_widget_get_allocation (button, &allocation);
3873           height = allocation.height;
3874         }
3875       else
3876         {
3877           button = gtk_tree_view_column_get_button (reorder->right_column);
3878           gtk_widget_get_allocation (button, &allocation);
3879           height = allocation.height;
3880         }
3881
3882       y -= tree_view->priv->expander_size;
3883       height += 2*tree_view->priv->expander_size;
3884
3885       /* Create the new window */
3886       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3887           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3888         {
3889           if (tree_view->priv->drag_highlight_window)
3890             {
3891               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3892                                         NULL);
3893               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3894             }
3895
3896           attributes.window_type = GDK_WINDOW_TEMP;
3897           attributes.wclass = GDK_INPUT_OUTPUT;
3898           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3899           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3900           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3901           attributes.x = x;
3902           attributes.y = y;
3903           attributes.width = width;
3904           attributes.height = height;
3905           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3906           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3907
3908           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3909
3910           cr = cairo_create (mask_image);
3911           /* mirror if we're on the left */
3912           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3913             {
3914               cairo_translate (cr, width, 0);
3915               cairo_scale (cr, -1, 1);
3916             }
3917           cairo_move_to (cr, 0, 0);
3918           cairo_line_to (cr, width, width);
3919           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3920           cairo_move_to (cr, 0, height);
3921           cairo_line_to (cr, width, height - width);
3922           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3923           cairo_fill (cr);
3924           cairo_destroy (cr);
3925
3926           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3927           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3928                                            mask_region, 0, 0);
3929
3930           cairo_region_destroy (mask_region);
3931           cairo_surface_destroy (mask_image);
3932         }
3933
3934       tree_view->priv->drag_column_window_state = arrow_type;
3935       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3936    }
3937   else
3938     {
3939       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3940       gdk_window_hide (tree_view->priv->drag_highlight_window);
3941       return;
3942     }
3943
3944   gdk_window_show (tree_view->priv->drag_highlight_window);
3945   gdk_window_raise (tree_view->priv->drag_highlight_window);
3946 }
3947
3948 static gboolean
3949 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3950                                     GdkEventMotion *event)
3951 {
3952   gint x;
3953   gint new_width;
3954   GtkTreeViewColumn *column;
3955   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3956
3957   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3958
3959   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3960     gdk_window_get_device_position (gtk_widget_get_window (widget),
3961                                     gdk_event_get_device ((GdkEvent *) event),
3962                                     &x, NULL, NULL);
3963   else
3964     x = event->x;
3965
3966   if (tree_view->priv->hadjustment)
3967     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3968
3969   new_width = gtk_tree_view_new_column_width (tree_view,
3970                                               tree_view->priv->drag_pos, &x);
3971   if (x != tree_view->priv->x_drag &&
3972       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3973     {
3974       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3975
3976       if (gtk_tree_view_column_get_expand (column))
3977         new_width -= tree_view->priv->last_extra_space_per_column;
3978
3979       _gtk_tree_view_column_set_resized_width (column, new_width);
3980
3981
3982       gtk_widget_queue_resize (widget);
3983     }
3984
3985   return FALSE;
3986 }
3987
3988
3989 static void
3990 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3991                                       GdkEvent    *event)
3992 {
3993   GtkTreeViewColumnReorder *reorder = NULL;
3994   GList *list;
3995   gint mouse_x;
3996
3997   gdk_window_get_device_position (tree_view->priv->header_window,
3998                                   gdk_event_get_device (event),
3999                                   &mouse_x, NULL, NULL);
4000   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4001     {
4002       reorder = (GtkTreeViewColumnReorder *) list->data;
4003       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4004         break;
4005       reorder = NULL;
4006     }
4007
4008   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4009       return;*/
4010
4011   tree_view->priv->cur_reorder = reorder;
4012   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4013 }
4014
4015 static void
4016 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4017 {
4018   GdkRectangle visible_rect;
4019   gint y;
4020   gint offset;
4021
4022   gdk_window_get_device_position (tree_view->priv->bin_window,
4023                                   gdk_device_manager_get_client_pointer (
4024                                     gdk_display_get_device_manager (
4025                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4026                                   NULL, &y, NULL);
4027   y += tree_view->priv->dy;
4028
4029   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4030
4031   /* see if we are near the edge. */
4032   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4033   if (offset > 0)
4034     {
4035       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4036       if (offset < 0)
4037         return;
4038     }
4039
4040   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4041                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4042 }
4043
4044 static gboolean
4045 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4046                                      GdkEvent    *event)
4047 {
4048   GdkRectangle visible_rect;
4049   gint x;
4050   gint offset;
4051
4052   gdk_window_get_device_position (tree_view->priv->bin_window,
4053                                   gdk_event_get_device (event),
4054                                   &x, NULL, NULL);
4055
4056   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4057
4058   /* See if we are near the edge. */
4059   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4060   if (offset > 0)
4061     {
4062       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4063       if (offset < 0)
4064         return TRUE;
4065     }
4066   offset = offset/3;
4067
4068   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4069                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4070
4071   return TRUE;
4072
4073 }
4074
4075 static gboolean
4076 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4077                                   GdkEventMotion *event)
4078 {
4079   GtkAllocation allocation, button_allocation;
4080   GtkTreeView *tree_view = (GtkTreeView *) widget;
4081   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4082   GtkWidget *button;
4083   gint x, y;
4084
4085   /* Sanity Check */
4086   if ((column == NULL) ||
4087       (event->window != tree_view->priv->drag_window))
4088     return FALSE;
4089
4090   button = gtk_tree_view_column_get_button (column);
4091
4092   /* Handle moving the header */
4093   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4094   gtk_widget_get_allocation (widget, &allocation);
4095   gtk_widget_get_allocation (button, &button_allocation);
4096   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4097              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4098   gdk_window_move (tree_view->priv->drag_window, x, y);
4099
4100   /* autoscroll, if needed */
4101   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4102   /* Update the current reorder position and arrow; */
4103   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4104
4105   return TRUE;
4106 }
4107
4108 static void
4109 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4110 {
4111   remove_scroll_timeout (tree_view);
4112   gtk_grab_remove (GTK_WIDGET (tree_view));
4113
4114   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4115     {
4116       GtkTreePath *tmp_path;
4117
4118       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4119
4120       /* The anchor path should be set to the start path */
4121       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4122                                                  tree_view->priv->rubber_band_start_node);
4123
4124       if (tree_view->priv->anchor)
4125         gtk_tree_row_reference_free (tree_view->priv->anchor);
4126
4127       tree_view->priv->anchor =
4128         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4129                                           tree_view->priv->model,
4130                                           tmp_path);
4131
4132       gtk_tree_path_free (tmp_path);
4133
4134       /* ... and the cursor to the end path */
4135       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4136                                                  tree_view->priv->rubber_band_end_node);
4137       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
4138       gtk_tree_path_free (tmp_path);
4139
4140       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4141     }
4142
4143   /* Clear status variables */
4144   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4145   tree_view->priv->rubber_band_extend = FALSE;
4146   tree_view->priv->rubber_band_modify = FALSE;
4147
4148   tree_view->priv->rubber_band_start_node = NULL;
4149   tree_view->priv->rubber_band_start_tree = NULL;
4150   tree_view->priv->rubber_band_end_node = NULL;
4151   tree_view->priv->rubber_band_end_tree = NULL;
4152 }
4153
4154 static void
4155 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4156                                                  GtkRBTree   *start_tree,
4157                                                  GtkRBNode   *start_node,
4158                                                  GtkRBTree   *end_tree,
4159                                                  GtkRBNode   *end_node,
4160                                                  gboolean     select,
4161                                                  gboolean     skip_start,
4162                                                  gboolean     skip_end)
4163 {
4164   if (start_node == end_node)
4165     return;
4166
4167   /* We skip the first node and jump inside the loop */
4168   if (skip_start)
4169     goto skip_first;
4170
4171   do
4172     {
4173       /* Small optimization by assuming insensitive nodes are never
4174        * selected.
4175        */
4176       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4177         {
4178           GtkTreePath *path;
4179           gboolean selectable;
4180
4181           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4182           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4183           gtk_tree_path_free (path);
4184
4185           if (!selectable)
4186             goto node_not_selectable;
4187         }
4188
4189       if (select)
4190         {
4191           if (tree_view->priv->rubber_band_extend)
4192             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4193           else if (tree_view->priv->rubber_band_modify)
4194             {
4195               /* Toggle the selection state */
4196               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4197                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4198               else
4199                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4200             }
4201           else
4202             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4203         }
4204       else
4205         {
4206           /* Mirror the above */
4207           if (tree_view->priv->rubber_band_extend)
4208             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4209           else if (tree_view->priv->rubber_band_modify)
4210             {
4211               /* Toggle the selection state */
4212               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4213                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4214               else
4215                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4216             }
4217           else
4218             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4219         }
4220
4221       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4222
4223 node_not_selectable:
4224       if (start_node == end_node)
4225         break;
4226
4227 skip_first:
4228
4229       if (start_node->children)
4230         {
4231           start_tree = start_node->children;
4232           start_node = _gtk_rbtree_first (start_tree);
4233         }
4234       else
4235         {
4236           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4237
4238           if (!start_tree)
4239             /* Ran out of tree */
4240             break;
4241         }
4242
4243       if (skip_end && start_node == end_node)
4244         break;
4245     }
4246   while (TRUE);
4247 }
4248
4249 static void
4250 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4251 {
4252   GtkRBTree *start_tree, *end_tree;
4253   GtkRBNode *start_node, *end_node;
4254
4255   _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);
4256   _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);
4257
4258   /* Handle the start area first */
4259   if (!tree_view->priv->rubber_band_start_node)
4260     {
4261       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4262                                                        start_tree,
4263                                                        start_node,
4264                                                        end_tree,
4265                                                        end_node,
4266                                                        TRUE,
4267                                                        FALSE,
4268                                                        FALSE);
4269     }
4270   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4271            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4272     {
4273       /* New node is above the old one; selection became bigger */
4274       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4275                                                        start_tree,
4276                                                        start_node,
4277                                                        tree_view->priv->rubber_band_start_tree,
4278                                                        tree_view->priv->rubber_band_start_node,
4279                                                        TRUE,
4280                                                        FALSE,
4281                                                        TRUE);
4282     }
4283   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4284            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4285     {
4286       /* New node is below the old one; selection became smaller */
4287       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4288                                                        tree_view->priv->rubber_band_start_tree,
4289                                                        tree_view->priv->rubber_band_start_node,
4290                                                        start_tree,
4291                                                        start_node,
4292                                                        FALSE,
4293                                                        FALSE,
4294                                                        TRUE);
4295     }
4296
4297   tree_view->priv->rubber_band_start_tree = start_tree;
4298   tree_view->priv->rubber_band_start_node = start_node;
4299
4300   /* Next, handle the end area */
4301   if (!tree_view->priv->rubber_band_end_node)
4302     {
4303       /* In the event this happens, start_node was also NULL; this case is
4304        * handled above.
4305        */
4306     }
4307   else if (!end_node)
4308     {
4309       /* Find the last node in the tree */
4310       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4311                                &end_tree, &end_node);
4312
4313       /* Selection reached end of the tree */
4314       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4315                                                        tree_view->priv->rubber_band_end_tree,
4316                                                        tree_view->priv->rubber_band_end_node,
4317                                                        end_tree,
4318                                                        end_node,
4319                                                        TRUE,
4320                                                        TRUE,
4321                                                        FALSE);
4322     }
4323   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4324            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4325     {
4326       /* New node is below the old one; selection became bigger */
4327       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4328                                                        tree_view->priv->rubber_band_end_tree,
4329                                                        tree_view->priv->rubber_band_end_node,
4330                                                        end_tree,
4331                                                        end_node,
4332                                                        TRUE,
4333                                                        TRUE,
4334                                                        FALSE);
4335     }
4336   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4337            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4338     {
4339       /* New node is above the old one; selection became smaller */
4340       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4341                                                        end_tree,
4342                                                        end_node,
4343                                                        tree_view->priv->rubber_band_end_tree,
4344                                                        tree_view->priv->rubber_band_end_node,
4345                                                        FALSE,
4346                                                        TRUE,
4347                                                        FALSE);
4348     }
4349
4350   tree_view->priv->rubber_band_end_tree = end_tree;
4351   tree_view->priv->rubber_band_end_node = end_node;
4352 }
4353
4354 static void
4355 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4356 {
4357   gint x, y;
4358   GdkRectangle old_area;
4359   GdkRectangle new_area;
4360   GdkRectangle common;
4361   cairo_region_t *invalid_region;
4362
4363   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4364   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4365   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4366   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4367
4368   gdk_window_get_device_position (tree_view->priv->bin_window,
4369                                   gdk_device_manager_get_client_pointer (
4370                                     gdk_display_get_device_manager (
4371                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4372                                   &x, &y, NULL);
4373
4374   x = MAX (x, 0);
4375   y = MAX (y, 0) + tree_view->priv->dy;
4376
4377   new_area.x = MIN (tree_view->priv->press_start_x, x);
4378   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4379   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4380   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4381
4382   invalid_region = cairo_region_create_rectangle (&old_area);
4383   cairo_region_union_rectangle (invalid_region, &new_area);
4384
4385   gdk_rectangle_intersect (&old_area, &new_area, &common);
4386   if (common.width > 2 && common.height > 2)
4387     {
4388       cairo_region_t *common_region;
4389
4390       /* make sure the border is invalidated */
4391       common.x += 1;
4392       common.y += 1;
4393       common.width -= 2;
4394       common.height -= 2;
4395
4396       common_region = cairo_region_create_rectangle (&common);
4397
4398       cairo_region_subtract (invalid_region, common_region);
4399       cairo_region_destroy (common_region);
4400     }
4401
4402   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4403
4404   cairo_region_destroy (invalid_region);
4405
4406   tree_view->priv->rubber_band_x = x;
4407   tree_view->priv->rubber_band_y = y;
4408
4409   gtk_tree_view_update_rubber_band_selection (tree_view);
4410 }
4411
4412 static void
4413 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4414                                  cairo_t      *cr)
4415 {
4416   GdkRectangle rect;
4417   GtkStyleContext *context;
4418
4419   cairo_save (cr);
4420
4421   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4422
4423   gtk_style_context_save (context);
4424   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4425
4426   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4427   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4428   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4429   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4430
4431   gdk_cairo_rectangle (cr, &rect);
4432   cairo_clip (cr);
4433
4434   gtk_render_background (context, cr,
4435                          rect.x, rect.y,
4436                          rect.width, rect.height);
4437   gtk_render_frame (context, cr,
4438                     rect.x, rect.y,
4439                     rect.width, rect.height);
4440
4441   gtk_style_context_restore (context);
4442   cairo_restore (cr);
4443 }
4444
4445 static gboolean
4446 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4447                                  GdkEventMotion *event)
4448 {
4449   GtkTreeView *tree_view;
4450   GtkRBTree *tree;
4451   GtkRBNode *node;
4452   gint new_y;
4453
4454   tree_view = (GtkTreeView *) widget;
4455
4456   if (tree_view->priv->tree == NULL)
4457     return FALSE;
4458
4459   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4460     {
4461       gtk_grab_add (GTK_WIDGET (tree_view));
4462       gtk_tree_view_update_rubber_band (tree_view);
4463
4464       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4465     }
4466   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4467     {
4468       gtk_tree_view_update_rubber_band (tree_view);
4469
4470       add_scroll_timeout (tree_view);
4471     }
4472
4473   /* only check for an initiated drag when a button is pressed */
4474   if (tree_view->priv->pressed_button >= 0
4475       && !tree_view->priv->rubber_band_status)
4476     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4477
4478   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4479   if (new_y < 0)
4480     new_y = 0;
4481
4482   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4483
4484   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4485   if ((tree_view->priv->button_pressed_node != NULL) &&
4486       (tree_view->priv->button_pressed_node != node))
4487     node = NULL;
4488
4489   tree_view->priv->event_last_x = event->x;
4490   tree_view->priv->event_last_y = event->y;
4491
4492   prelight_or_select (tree_view, tree, node, event->x, event->y);
4493
4494   return TRUE;
4495 }
4496
4497 static gboolean
4498 gtk_tree_view_motion (GtkWidget      *widget,
4499                       GdkEventMotion *event)
4500 {
4501   GtkTreeView *tree_view;
4502
4503   tree_view = (GtkTreeView *) widget;
4504
4505   /* Resizing a column */
4506   if (tree_view->priv->in_column_resize)
4507     return gtk_tree_view_motion_resize_column (widget, event);
4508
4509   /* Drag column */
4510   if (tree_view->priv->in_column_drag)
4511     return gtk_tree_view_motion_drag_column (widget, event);
4512
4513   /* Sanity check it */
4514   if (event->window == tree_view->priv->bin_window)
4515     return gtk_tree_view_motion_bin_window (widget, event);
4516
4517   return FALSE;
4518 }
4519
4520 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4521  * the tree is empty.
4522  */
4523 static void
4524 invalidate_empty_focus (GtkTreeView *tree_view)
4525 {
4526   GdkRectangle area;
4527
4528   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4529     return;
4530
4531   area.x = 0;
4532   area.y = 0;
4533   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4534   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4535   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4536 }
4537
4538 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4539  * is empty.
4540  */
4541 static void
4542 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4543 {
4544   GtkWidget *widget = GTK_WIDGET (tree_view);
4545   gint w, h;
4546
4547   if (!gtk_widget_has_visible_focus (widget))
4548     return;
4549
4550   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4551   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4552
4553   if (w > 0 && h > 0)
4554     {
4555       GtkStyleContext *context;
4556       GtkStateFlags state;
4557
4558       context = gtk_widget_get_style_context (widget);
4559       state = gtk_widget_get_state_flags (widget);
4560
4561       gtk_style_context_save (context);
4562       gtk_style_context_set_state (context, state);
4563
4564       gtk_render_focus (context, cr, 1, 1, w, h);
4565
4566       gtk_style_context_restore (context);
4567     }
4568 }
4569
4570 typedef enum {
4571   GTK_TREE_VIEW_GRID_LINE,
4572   GTK_TREE_VIEW_TREE_LINE,
4573   GTK_TREE_VIEW_FOREGROUND_LINE
4574 } GtkTreeViewLineType;
4575
4576 static void
4577 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4578                          cairo_t             *cr,
4579                          GtkTreeViewLineType  type,
4580                          int                  x1,
4581                          int                  y1,
4582                          int                  x2,
4583                          int                  y2)
4584 {
4585   cairo_save (cr);
4586
4587   switch (type)
4588     {
4589     case GTK_TREE_VIEW_TREE_LINE:
4590       cairo_set_source_rgb (cr, 0, 0, 0);
4591       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4592       if (tree_view->priv->tree_line_dashes[0])
4593         cairo_set_dash (cr,
4594                         tree_view->priv->tree_line_dashes,
4595                         2, 0.5);
4596       break;
4597     case GTK_TREE_VIEW_GRID_LINE:
4598       cairo_set_source_rgb (cr, 0, 0, 0);
4599       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4600       if (tree_view->priv->grid_line_dashes[0])
4601         cairo_set_dash (cr,
4602                         tree_view->priv->grid_line_dashes,
4603                         2, 0.5);
4604       break;
4605     default:
4606       g_assert_not_reached ();
4607       /* fall through */
4608     case GTK_TREE_VIEW_FOREGROUND_LINE:
4609       {
4610         GtkStyleContext *context;
4611         GtkStateFlags state;
4612         GdkRGBA color;
4613
4614         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4615         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4616
4617         cairo_set_line_width (cr, 1.0);
4618         gtk_style_context_get_color (context, state, &color);
4619         gdk_cairo_set_source_rgba (cr, &color);
4620       }
4621
4622       break;
4623     }
4624
4625   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4626   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4627   cairo_stroke (cr);
4628
4629   cairo_restore (cr);
4630 }
4631
4632 static void
4633 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4634                                cairo_t        *cr,
4635                                gint            n_visible_columns)
4636 {
4637   GList *list = tree_view->priv->columns;
4638   gint i = 0;
4639   gint current_x = 0;
4640
4641   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4642       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4643     return;
4644
4645   /* Only draw the lines for visible rows and columns */
4646   for (list = tree_view->priv->columns; list; list = list->next, i++)
4647     {
4648       GtkTreeViewColumn *column = list->data;
4649
4650       /* We don't want a line for the last column */
4651       if (i == n_visible_columns - 1)
4652         break;
4653
4654       if (!gtk_tree_view_column_get_visible (column))
4655         continue;
4656
4657       current_x += gtk_tree_view_column_get_width (column);
4658
4659       gtk_tree_view_draw_line (tree_view, cr,
4660                                GTK_TREE_VIEW_GRID_LINE,
4661                                current_x - 1, 0,
4662                                current_x - 1, tree_view->priv->height);
4663     }
4664 }
4665
4666 /* Warning: Very scary function.
4667  * Modify at your own risk
4668  *
4669  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4670  * FIXME: It's not...
4671  */
4672 static gboolean
4673 gtk_tree_view_bin_draw (GtkWidget      *widget,
4674                         cairo_t        *cr)
4675 {
4676   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4677   GtkTreePath *path;
4678   GtkRBTree *tree;
4679   GList *list;
4680   GtkRBNode *node;
4681   GtkRBNode *cursor = NULL;
4682   GtkRBTree *cursor_tree = NULL;
4683   GtkRBNode *drag_highlight = NULL;
4684   GtkRBTree *drag_highlight_tree = NULL;
4685   GtkTreeIter iter;
4686   gint new_y;
4687   gint y_offset, cell_offset;
4688   gint max_height;
4689   gint depth;
4690   GdkRectangle background_area;
4691   GdkRectangle cell_area;
4692   GdkRectangle clip;
4693   guint flags;
4694   gint highlight_x;
4695   gint expander_cell_width;
4696   gint bin_window_width;
4697   gint bin_window_height;
4698   GtkTreePath *cursor_path;
4699   GtkTreePath *drag_dest_path;
4700   GList *first_column, *last_column;
4701   gint vertical_separator;
4702   gint horizontal_separator;
4703   gint focus_line_width;
4704   gboolean allow_rules;
4705   gboolean has_can_focus_cell;
4706   gboolean rtl;
4707   gint n_visible_columns;
4708   gint grid_line_width;
4709   gboolean draw_vgrid_lines, draw_hgrid_lines;
4710   GtkStyleContext *context;
4711   GtkStateFlags state;
4712   gboolean parity;
4713
4714   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4715   context = gtk_widget_get_style_context (widget);
4716   state = gtk_widget_get_state_flags (widget);
4717
4718   gtk_widget_style_get (widget,
4719                         "horizontal-separator", &horizontal_separator,
4720                         "vertical-separator", &vertical_separator,
4721                         "allow-rules", &allow_rules,
4722                         "focus-line-width", &focus_line_width,
4723                         NULL);
4724
4725   if (tree_view->priv->tree == NULL)
4726     {
4727       draw_empty_focus (tree_view, cr);
4728       return TRUE;
4729     }
4730
4731   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4732   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4733   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4734   cairo_clip (cr);
4735   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4736     return TRUE;
4737
4738   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4739
4740   if (new_y < 0)
4741     new_y = 0;
4742   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4743
4744   if (tree_view->priv->height < bin_window_height)
4745     {
4746       gtk_style_context_save (context);
4747       gtk_style_context_set_state (context, state);
4748       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4749
4750       gtk_render_background (context, cr,
4751                              0, tree_view->priv->height,
4752                              bin_window_width,
4753                              bin_window_height - tree_view->priv->height);
4754
4755       gtk_style_context_restore (context);
4756     }
4757
4758   if (node == NULL)
4759     return TRUE;
4760
4761   /* find the path for the node */
4762   path = _gtk_tree_path_new_from_rbtree (tree, node);
4763   gtk_tree_model_get_iter (tree_view->priv->model,
4764                            &iter,
4765                            path);
4766   depth = gtk_tree_path_get_depth (path);
4767   gtk_tree_path_free (path);
4768
4769   cursor_path = NULL;
4770   drag_dest_path = NULL;
4771
4772   if (tree_view->priv->cursor)
4773     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4774
4775   if (cursor_path)
4776     _gtk_tree_view_find_node (tree_view, cursor_path,
4777                               &cursor_tree, &cursor);
4778
4779   if (tree_view->priv->drag_dest_row)
4780     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4781
4782   if (drag_dest_path)
4783     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4784                               &drag_highlight_tree, &drag_highlight);
4785
4786   draw_vgrid_lines =
4787     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4788     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4789   draw_hgrid_lines =
4790     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4791     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4792
4793   if (draw_vgrid_lines || draw_hgrid_lines)
4794     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4795
4796   n_visible_columns = 0;
4797   for (list = tree_view->priv->columns; list; list = list->next)
4798     {
4799       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4800         continue;
4801       n_visible_columns ++;
4802     }
4803
4804   /* Find the last column */
4805   for (last_column = g_list_last (tree_view->priv->columns);
4806        last_column &&
4807        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4808        last_column = last_column->prev)
4809     ;
4810
4811   /* and the first */
4812   for (first_column = g_list_first (tree_view->priv->columns);
4813        first_column &&
4814        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4815        first_column = first_column->next)
4816     ;
4817
4818   /* Actually process the expose event.  To do this, we want to
4819    * start at the first node of the event, and walk the tree in
4820    * order, drawing each successive node.
4821    */
4822
4823   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4824
4825   do
4826     {
4827       gboolean is_separator = FALSE;
4828       gboolean is_first = FALSE;
4829       gboolean is_last = FALSE;
4830       gint n_col = 0;
4831
4832       parity = !parity;
4833       is_separator = row_is_separator (tree_view, &iter, NULL);
4834
4835       max_height = gtk_tree_view_get_row_height (tree_view, node);
4836
4837       cell_offset = 0;
4838       highlight_x = 0; /* should match x coord of first cell */
4839       expander_cell_width = 0;
4840
4841       background_area.y = y_offset + clip.y;
4842       background_area.height = max_height;
4843
4844       flags = 0;
4845
4846       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4847         flags |= GTK_CELL_RENDERER_PRELIT;
4848
4849       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4850         flags |= GTK_CELL_RENDERER_SELECTED;
4851
4852       /* we *need* to set cell data on all cells before the call
4853        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4854        * return a correct value.
4855        */
4856       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4857            list;
4858            list = (rtl ? list->prev : list->next))
4859         {
4860           GtkTreeViewColumn *column = list->data;
4861           gtk_tree_view_column_cell_set_cell_data (column,
4862                                                    tree_view->priv->model,
4863                                                    &iter,
4864                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4865                                                    node->children?TRUE:FALSE);
4866         }
4867
4868       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4869
4870       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4871            list;
4872            list = (rtl ? list->prev : list->next))
4873         {
4874           GtkTreeViewColumn *column = list->data;
4875           GtkRegionFlags row_flags = 0, column_flags = 0;
4876           GtkStateFlags state = 0;
4877           gint width;
4878           gboolean draw_focus;
4879
4880           if (!gtk_tree_view_column_get_visible (column))
4881             continue;
4882
4883           n_col++;
4884           width = gtk_tree_view_column_get_width (column);
4885
4886           if (cell_offset > clip.x + clip.width ||
4887               cell_offset + width < clip.x)
4888             {
4889               cell_offset += width;
4890               continue;
4891             }
4892
4893           if (gtk_tree_view_column_get_sort_indicator (column))
4894             flags |= GTK_CELL_RENDERER_SORTED;
4895           else
4896             flags &= ~GTK_CELL_RENDERER_SORTED;
4897
4898           if (cursor == node)
4899             flags |= GTK_CELL_RENDERER_FOCUSED;
4900           else
4901             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4902
4903           background_area.x = cell_offset;
4904           background_area.width = width;
4905
4906           cell_area = background_area;
4907           cell_area.y += vertical_separator / 2;
4908           cell_area.x += horizontal_separator / 2;
4909           cell_area.height -= vertical_separator;
4910           cell_area.width -= horizontal_separator;
4911
4912           if (draw_vgrid_lines)
4913             {
4914               if (list == first_column)
4915                 {
4916                   cell_area.width -= grid_line_width / 2;
4917                 }
4918               else if (list == last_column)
4919                 {
4920                   cell_area.x += grid_line_width / 2;
4921                   cell_area.width -= grid_line_width / 2;
4922                 }
4923               else
4924                 {
4925                   cell_area.x += grid_line_width / 2;
4926                   cell_area.width -= grid_line_width;
4927                 }
4928             }
4929
4930           if (draw_hgrid_lines)
4931             {
4932               cell_area.y += grid_line_width / 2;
4933               cell_area.height -= grid_line_width;
4934             }
4935
4936           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4937             {
4938               cell_offset += gtk_tree_view_column_get_width (column);
4939               continue;
4940             }
4941
4942           gtk_tree_view_column_cell_set_cell_data (column,
4943                                                    tree_view->priv->model,
4944                                                    &iter,
4945                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4946                                                    node->children?TRUE:FALSE);
4947
4948           /* Select the detail for drawing the cell.  relevant
4949            * factors are parity, sortedness, and whether to
4950            * display rules.
4951            */
4952           if (allow_rules && tree_view->priv->has_rules)
4953             {
4954               if (parity)
4955                 row_flags |= GTK_REGION_ODD;
4956               else
4957                 row_flags |= GTK_REGION_EVEN;
4958             }
4959
4960           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4961               n_visible_columns >= 3)
4962             column_flags |= GTK_REGION_SORTED;
4963
4964           is_first = (rtl ? !list->next : !list->prev);
4965           is_last = (rtl ? !list->prev : !list->next);
4966
4967           if (is_first)
4968             column_flags |= GTK_REGION_FIRST;
4969
4970           if (is_last)
4971             column_flags |= GTK_REGION_LAST;
4972
4973           if ((n_col % 2) == 0)
4974             column_flags |= GTK_REGION_EVEN;
4975           else
4976             column_flags |= GTK_REGION_ODD;
4977
4978           gtk_style_context_save (context);
4979
4980           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4981           gtk_style_context_set_state (context, state);
4982
4983           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4984           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4985           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4986
4987           if (node == cursor && has_can_focus_cell
4988               && ((column == tree_view->priv->focus_column
4989                    && tree_view->priv->draw_keyfocus &&
4990                    gtk_widget_has_visible_focus (widget))
4991                   || (column == tree_view->priv->edited_column)))
4992             draw_focus = TRUE;
4993           else
4994             draw_focus = FALSE;
4995
4996           /* Draw background */
4997           gtk_render_background (context, cr,
4998                                  background_area.x,
4999                                  background_area.y,
5000                                  background_area.width,
5001                                  background_area.height);
5002
5003           /* Draw frame */
5004           gtk_render_frame (context, cr,
5005                             background_area.x,
5006                             background_area.y,
5007                             background_area.width,
5008                             background_area.height);
5009
5010           if (gtk_tree_view_is_expander_column (tree_view, column))
5011             {
5012               if (!rtl)
5013                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5014               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5015
5016               if (gtk_tree_view_draw_expanders (tree_view))
5017                 {
5018                   if (!rtl)
5019                     cell_area.x += depth * tree_view->priv->expander_size;
5020                   cell_area.width -= depth * tree_view->priv->expander_size;
5021                 }
5022
5023               /* If we have an expander column, the highlight underline
5024                * starts with that column, so that it indicates which
5025                * level of the tree we're dropping at.
5026                */
5027               highlight_x = cell_area.x;
5028               expander_cell_width = cell_area.width;
5029
5030               if (is_separator)
5031                 {
5032                   gtk_style_context_save (context);
5033                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5034
5035                   gtk_render_line (context, cr,
5036                                    cell_area.x,
5037                                    cell_area.y + cell_area.height / 2,
5038                                    cell_area.x + cell_area.width,
5039                                    cell_area.y + cell_area.height / 2);
5040
5041                   gtk_style_context_restore (context);
5042                 }
5043               else
5044                 {
5045                   _gtk_tree_view_column_cell_render (column,
5046                                                      cr,
5047                                                      &background_area,
5048                                                      &cell_area,
5049                                                      flags,
5050                                                      draw_focus);
5051                 }
5052
5053               if (gtk_tree_view_draw_expanders (tree_view)
5054                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5055                 {
5056                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5057                                             cr,
5058                                             tree,
5059                                             node);
5060                 }
5061             }
5062           else
5063             {
5064               if (is_separator)
5065                 {
5066                   gtk_style_context_save (context);
5067                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5068
5069                   gtk_render_line (context, cr,
5070                                    cell_area.x,
5071                                    cell_area.y + cell_area.height / 2,
5072                                    cell_area.x + cell_area.width,
5073                                    cell_area.y + cell_area.height / 2);
5074
5075                   gtk_style_context_restore (context);
5076                 }
5077               else
5078                 _gtk_tree_view_column_cell_render (column,
5079                                                    cr,
5080                                                    &background_area,
5081                                                    &cell_area,
5082                                                    flags,
5083                                                    draw_focus);
5084             }
5085
5086           if (draw_hgrid_lines)
5087             {
5088               if (background_area.y > 0)
5089                 gtk_tree_view_draw_line (tree_view, cr,
5090                                          GTK_TREE_VIEW_GRID_LINE,
5091                                          background_area.x, background_area.y,
5092                                          background_area.x + background_area.width,
5093                                          background_area.y);
5094
5095               if (y_offset + max_height >= clip.height)
5096                 gtk_tree_view_draw_line (tree_view, cr,
5097                                          GTK_TREE_VIEW_GRID_LINE,
5098                                          background_area.x, background_area.y + max_height,
5099                                          background_area.x + background_area.width,
5100                                          background_area.y + max_height);
5101             }
5102
5103           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5104               tree_view->priv->tree_lines_enabled)
5105             {
5106               gint x = background_area.x;
5107               gint mult = rtl ? -1 : 1;
5108               gint y0 = background_area.y;
5109               gint y1 = background_area.y + background_area.height/2;
5110               gint y2 = background_area.y + background_area.height;
5111
5112               if (rtl)
5113                 x += background_area.width - 1;
5114
5115               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5116                   && depth > 1)
5117                 {
5118                   gtk_tree_view_draw_line (tree_view, cr,
5119                                            GTK_TREE_VIEW_TREE_LINE,
5120                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5121                                            y1,
5122                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5123                                            y1);
5124                 }
5125               else if (depth > 1)
5126                 {
5127                   gtk_tree_view_draw_line (tree_view, cr,
5128                                            GTK_TREE_VIEW_TREE_LINE,
5129                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5130                                            y1,
5131                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5132                                            y1);
5133                 }
5134
5135               if (depth > 1)
5136                 {
5137                   gint i;
5138                   GtkRBNode *tmp_node;
5139                   GtkRBTree *tmp_tree;
5140
5141                   if (!_gtk_rbtree_next (tree, node))
5142                     gtk_tree_view_draw_line (tree_view, cr,
5143                                              GTK_TREE_VIEW_TREE_LINE,
5144                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5145                                              y0,
5146                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5147                                              y1);
5148                   else
5149                     gtk_tree_view_draw_line (tree_view, cr,
5150                                              GTK_TREE_VIEW_TREE_LINE,
5151                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5152                                              y0,
5153                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5154                                              y2);
5155
5156                   tmp_node = tree->parent_node;
5157                   tmp_tree = tree->parent_tree;
5158
5159                   for (i = depth - 2; i > 0; i--)
5160                     {
5161                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5162                         gtk_tree_view_draw_line (tree_view, cr,
5163                                                  GTK_TREE_VIEW_TREE_LINE,
5164                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5165                                                  y0,
5166                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5167                                                  y2);
5168
5169                       tmp_node = tmp_tree->parent_node;
5170                       tmp_tree = tmp_tree->parent_tree;
5171                     }
5172                 }
5173             }
5174
5175           gtk_style_context_restore (context);
5176           cell_offset += gtk_tree_view_column_get_width (column);
5177         }
5178
5179       if (node == drag_highlight)
5180         {
5181           /* Draw indicator for the drop
5182            */
5183           gint highlight_y = -1;
5184           GtkRBTree *tree = NULL;
5185           GtkRBNode *node = NULL;
5186
5187           switch (tree_view->priv->drag_dest_pos)
5188             {
5189             case GTK_TREE_VIEW_DROP_BEFORE:
5190               highlight_y = background_area.y - 1;
5191               if (highlight_y < 0)
5192                       highlight_y = 0;
5193               break;
5194
5195             case GTK_TREE_VIEW_DROP_AFTER:
5196               highlight_y = background_area.y + background_area.height - 1;
5197               break;
5198
5199             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5200             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5201               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5202
5203               if (tree == NULL)
5204                 break;
5205
5206               gtk_render_focus (context, cr,
5207                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5208                                    - focus_line_width / 2,
5209                                 gdk_window_get_width (tree_view->priv->bin_window),
5210                                 gtk_tree_view_get_row_height (tree_view, node)
5211                                    - focus_line_width + 1);
5212               break;
5213             }
5214
5215           if (highlight_y >= 0)
5216             {
5217               gtk_tree_view_draw_line (tree_view, cr,
5218                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5219                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5220                                        highlight_y,
5221                                        rtl ? 0 : bin_window_width,
5222                                        highlight_y);
5223             }
5224         }
5225
5226       /* draw the big row-spanning focus rectangle, if needed */
5227       if (!has_can_focus_cell && node == cursor &&
5228           tree_view->priv->draw_keyfocus &&
5229           gtk_widget_has_visible_focus (widget))
5230         {
5231           gint tmp_y, tmp_height;
5232           GtkStateFlags focus_rect_state = 0;
5233
5234           gtk_style_context_save (context);
5235
5236           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5237           gtk_style_context_set_state (context, focus_rect_state);
5238
5239           if (draw_hgrid_lines)
5240             {
5241               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5242               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5243             }
5244           else
5245             {
5246               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5247               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5248             }
5249
5250           gtk_render_focus (context, cr,
5251                             0, tmp_y,
5252                             gdk_window_get_width (tree_view->priv->bin_window),
5253                             tmp_height);
5254
5255           gtk_style_context_restore (context);
5256         }
5257
5258       y_offset += max_height;
5259       if (node->children)
5260         {
5261           GtkTreeIter parent = iter;
5262           gboolean has_child;
5263
5264           tree = node->children;
5265           node = _gtk_rbtree_first (tree);
5266
5267           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5268                                                     &iter,
5269                                                     &parent);
5270           depth++;
5271
5272           /* Sanity Check! */
5273           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5274         }
5275       else
5276         {
5277           gboolean done = FALSE;
5278
5279           do
5280             {
5281               node = _gtk_rbtree_next (tree, node);
5282               if (node != NULL)
5283                 {
5284                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5285                   done = TRUE;
5286
5287                   /* Sanity Check! */
5288                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5289                 }
5290               else
5291                 {
5292                   GtkTreeIter parent_iter = iter;
5293                   gboolean has_parent;
5294
5295                   node = tree->parent_node;
5296                   tree = tree->parent_tree;
5297                   if (tree == NULL)
5298                     /* we should go to done to free some memory */
5299                     goto done;
5300                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5301                                                            &iter,
5302                                                            &parent_iter);
5303                   depth--;
5304
5305                   /* Sanity check */
5306                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5307                 }
5308             }
5309           while (!done);
5310         }
5311     }
5312   while (y_offset < clip.height);
5313
5314 done:
5315   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5316
5317   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5318     gtk_tree_view_paint_rubber_band (tree_view, cr);
5319
5320   if (cursor_path)
5321     gtk_tree_path_free (cursor_path);
5322
5323   if (drag_dest_path)
5324     gtk_tree_path_free (drag_dest_path);
5325
5326   return FALSE;
5327 }
5328
5329 static gboolean
5330 gtk_tree_view_draw (GtkWidget *widget,
5331                     cairo_t   *cr)
5332 {
5333   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5334   GtkWidget   *button;
5335
5336   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5337     {
5338       GtkStyleContext *context;
5339       GList *tmp_list;
5340
5341       context = gtk_widget_get_style_context (widget);
5342
5343       cairo_save (cr);
5344
5345       gtk_style_context_save (context);
5346       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5347
5348       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5349
5350       gtk_tree_view_bin_draw (widget, cr);
5351
5352       gtk_style_context_restore (context);
5353       cairo_restore (cr);
5354
5355       /* We can't just chain up to Container::draw as it will try to send the
5356        * event to the headers, so we handle propagating it to our children
5357        * (eg. widgets being edited) ourselves.
5358        */
5359       tmp_list = tree_view->priv->children;
5360       while (tmp_list)
5361         {
5362           GtkTreeViewChild *child = tmp_list->data;
5363           tmp_list = tmp_list->next;
5364
5365           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5366         }
5367     }
5368
5369   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5370     {
5371       GList *list;
5372
5373       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5374         {
5375           GtkTreeViewColumn *column = list->data;
5376
5377           if (column == tree_view->priv->drag_column)
5378             continue;
5379
5380           if (gtk_tree_view_column_get_visible (column))
5381             {
5382               button = gtk_tree_view_column_get_button (column);
5383               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5384                                             button, cr);
5385             }
5386         }
5387     }
5388
5389   if (tree_view->priv->drag_window &&
5390       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5391     {
5392       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5393       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5394                                     button, cr);
5395     }
5396
5397   return FALSE;
5398 }
5399
5400 enum
5401 {
5402   DROP_HOME,
5403   DROP_RIGHT,
5404   DROP_LEFT,
5405   DROP_END
5406 };
5407
5408 /* returns 0x1 when no column has been found -- yes it's hackish */
5409 static GtkTreeViewColumn *
5410 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5411                                GtkTreeViewColumn *column,
5412                                gint               drop_position)
5413 {
5414   GtkTreeViewColumn *left_column = NULL;
5415   GtkTreeViewColumn *cur_column = NULL;
5416   GList *tmp_list;
5417
5418   if (!gtk_tree_view_column_get_reorderable (column))
5419     return (GtkTreeViewColumn *)0x1;
5420
5421   switch (drop_position)
5422     {
5423       case DROP_HOME:
5424         /* find first column where we can drop */
5425         tmp_list = tree_view->priv->columns;
5426         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5427           return (GtkTreeViewColumn *)0x1;
5428
5429         while (tmp_list)
5430           {
5431             g_assert (tmp_list);
5432
5433             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5434             tmp_list = tmp_list->next;
5435
5436             if (left_column &&
5437                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5438               continue;
5439
5440             if (!tree_view->priv->column_drop_func)
5441               return left_column;
5442
5443             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5444               {
5445                 left_column = cur_column;
5446                 continue;
5447               }
5448
5449             return left_column;
5450           }
5451
5452         if (!tree_view->priv->column_drop_func)
5453           return left_column;
5454
5455         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5456           return left_column;
5457         else
5458           return (GtkTreeViewColumn *)0x1;
5459         break;
5460
5461       case DROP_RIGHT:
5462         /* find first column after column where we can drop */
5463         tmp_list = tree_view->priv->columns;
5464
5465         for (; tmp_list; tmp_list = tmp_list->next)
5466           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5467             break;
5468
5469         if (!tmp_list || !tmp_list->next)
5470           return (GtkTreeViewColumn *)0x1;
5471
5472         tmp_list = tmp_list->next;
5473         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5474         tmp_list = tmp_list->next;
5475
5476         while (tmp_list)
5477           {
5478             g_assert (tmp_list);
5479
5480             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5481             tmp_list = tmp_list->next;
5482
5483             if (left_column &&
5484                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5485               {
5486                 left_column = cur_column;
5487                 if (tmp_list)
5488                   tmp_list = tmp_list->next;
5489                 continue;
5490               }
5491
5492             if (!tree_view->priv->column_drop_func)
5493               return left_column;
5494
5495             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5496               {
5497                 left_column = cur_column;
5498                 continue;
5499               }
5500
5501             return left_column;
5502           }
5503
5504         if (!tree_view->priv->column_drop_func)
5505           return left_column;
5506
5507         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5508           return left_column;
5509         else
5510           return (GtkTreeViewColumn *)0x1;
5511         break;
5512
5513       case DROP_LEFT:
5514         /* find first column before column where we can drop */
5515         tmp_list = tree_view->priv->columns;
5516
5517         for (; tmp_list; tmp_list = tmp_list->next)
5518           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5519             break;
5520
5521         if (!tmp_list || !tmp_list->prev)
5522           return (GtkTreeViewColumn *)0x1;
5523
5524         tmp_list = tmp_list->prev;
5525         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5526         tmp_list = tmp_list->prev;
5527
5528         while (tmp_list)
5529           {
5530             g_assert (tmp_list);
5531
5532             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5533
5534             if (left_column &&
5535                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5536               {
5537                 /*if (!tmp_list->prev)
5538                   return (GtkTreeViewColumn *)0x1;
5539                   */
5540 /*
5541                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5542                 tmp_list = tmp_list->prev->prev;
5543                 continue;*/
5544
5545                 cur_column = left_column;
5546                 if (tmp_list)
5547                   tmp_list = tmp_list->prev;
5548                 continue;
5549               }
5550
5551             if (!tree_view->priv->column_drop_func)
5552               return left_column;
5553
5554             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5555               return left_column;
5556
5557             cur_column = left_column;
5558             tmp_list = tmp_list->prev;
5559           }
5560
5561         if (!tree_view->priv->column_drop_func)
5562           return NULL;
5563
5564         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5565           return NULL;
5566         else
5567           return (GtkTreeViewColumn *)0x1;
5568         break;
5569
5570       case DROP_END:
5571         /* same as DROP_HOME case, but doing it backwards */
5572         tmp_list = g_list_last (tree_view->priv->columns);
5573         cur_column = NULL;
5574
5575         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5576           return (GtkTreeViewColumn *)0x1;
5577
5578         while (tmp_list)
5579           {
5580             g_assert (tmp_list);
5581
5582             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5583
5584             if (left_column &&
5585                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5586               {
5587                 cur_column = left_column;
5588                 tmp_list = tmp_list->prev;
5589               }
5590
5591             if (!tree_view->priv->column_drop_func)
5592               return left_column;
5593
5594             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5595               return left_column;
5596
5597             cur_column = left_column;
5598             tmp_list = tmp_list->prev;
5599           }
5600
5601         if (!tree_view->priv->column_drop_func)
5602           return NULL;
5603
5604         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5605           return NULL;
5606         else
5607           return (GtkTreeViewColumn *)0x1;
5608         break;
5609     }
5610
5611   return (GtkTreeViewColumn *)0x1;
5612 }
5613
5614 static gboolean
5615 gtk_tree_view_key_press (GtkWidget   *widget,
5616                          GdkEventKey *event)
5617 {
5618   GtkTreeView *tree_view = (GtkTreeView *) widget;
5619   GtkWidget   *button;
5620
5621   if (tree_view->priv->rubber_band_status)
5622     {
5623       if (event->keyval == GDK_KEY_Escape)
5624         gtk_tree_view_stop_rubber_band (tree_view);
5625
5626       return TRUE;
5627     }
5628
5629   if (tree_view->priv->in_column_drag)
5630     {
5631       if (event->keyval == GDK_KEY_Escape)
5632         {
5633           tree_view->priv->cur_reorder = NULL;
5634           gtk_tree_view_button_release_drag_column (widget, NULL);
5635         }
5636       return TRUE;
5637     }
5638
5639   if (tree_view->priv->headers_visible)
5640     {
5641       GList *focus_column;
5642       gboolean rtl;
5643
5644       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5645
5646       for (focus_column = tree_view->priv->columns;
5647            focus_column;
5648            focus_column = focus_column->next)
5649         {
5650           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5651
5652           button = gtk_tree_view_column_get_button (column);
5653           if (gtk_widget_has_focus (button))
5654             break;
5655         }
5656
5657       if (focus_column &&
5658           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5659           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5660            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5661         {
5662           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5663           gint max_width, min_width;
5664
5665           if (!gtk_tree_view_column_get_resizable (column))
5666             {
5667               gtk_widget_error_bell (widget);
5668               return TRUE;
5669             }
5670
5671           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5672               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5673             {
5674               GtkRequisition button_req;
5675               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5676               gint new_width;
5677
5678               button = gtk_tree_view_column_get_button (column);
5679
5680               gtk_widget_get_preferred_size (button, &button_req, NULL);
5681
5682               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5683               new_width -= 2;
5684               if (new_width < 0)
5685                 new_width = 0;
5686
5687               _gtk_tree_view_column_set_resized_width (column, new_width);
5688
5689               min_width = gtk_tree_view_column_get_min_width (column);
5690               if (min_width == -1)
5691                 new_width = MAX (button_req.width, new_width);
5692               else
5693                 {
5694                   new_width = MAX (min_width, new_width);
5695                 }
5696
5697               max_width = gtk_tree_view_column_get_max_width (column);
5698               if (max_width != -1)
5699                 new_width = MIN (new_width, max_width);
5700
5701               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5702
5703               if (new_width != old_width)
5704                 {
5705                   _gtk_tree_view_column_set_resized_width (column, new_width);
5706                   gtk_widget_queue_resize (widget);
5707                 }
5708               else
5709                 gtk_widget_error_bell (widget);
5710             }
5711           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5712                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5713             {
5714               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5715               gint new_width;
5716
5717               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5718               new_width += 2;
5719
5720               max_width = gtk_tree_view_column_get_max_width (column);
5721               if (max_width != -1)
5722                 new_width = MIN (new_width, max_width);
5723
5724               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5725
5726               if (new_width != old_width)
5727                 {
5728                   _gtk_tree_view_column_set_resized_width (column, new_width);
5729                   gtk_widget_queue_resize (widget);
5730                 }
5731               else
5732                 gtk_widget_error_bell (widget);
5733             }
5734
5735           return TRUE;
5736         }
5737
5738       if (focus_column &&
5739           (event->state & GDK_MOD1_MASK) &&
5740           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5741            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5742            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5743            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5744         {
5745           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5746
5747           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5748               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5749             {
5750               GtkTreeViewColumn *col;
5751               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5752               if (col != (GtkTreeViewColumn *)0x1)
5753                 gtk_tree_view_move_column_after (tree_view, column, col);
5754               else
5755                 gtk_widget_error_bell (widget);
5756             }
5757           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5758                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5759             {
5760               GtkTreeViewColumn *col;
5761               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5762               if (col != (GtkTreeViewColumn *)0x1)
5763                 gtk_tree_view_move_column_after (tree_view, column, col);
5764               else
5765                 gtk_widget_error_bell (widget);
5766             }
5767           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5768             {
5769               GtkTreeViewColumn *col;
5770               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5771               if (col != (GtkTreeViewColumn *)0x1)
5772                 gtk_tree_view_move_column_after (tree_view, column, col);
5773               else
5774                 gtk_widget_error_bell (widget);
5775             }
5776           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5777             {
5778               GtkTreeViewColumn *col;
5779               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5780               if (col != (GtkTreeViewColumn *)0x1)
5781                 gtk_tree_view_move_column_after (tree_view, column, col);
5782               else
5783                 gtk_widget_error_bell (widget);
5784             }
5785
5786           return TRUE;
5787         }
5788     }
5789
5790   /* Chain up to the parent class.  It handles the keybindings. */
5791   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5792     return TRUE;
5793
5794   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5795     {
5796       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5797       return FALSE;
5798     }
5799
5800   /* We pass the event to the search_entry.  If its text changes, then we start
5801    * the typeahead find capabilities. */
5802   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5803       && tree_view->priv->enable_search
5804       && !tree_view->priv->search_custom_entry_set)
5805     {
5806       GdkEvent *new_event;
5807       char *old_text;
5808       const char *new_text;
5809       gboolean retval;
5810       GdkScreen *screen;
5811       gboolean text_modified;
5812       gulong popup_menu_id;
5813
5814       gtk_tree_view_ensure_interactive_directory (tree_view);
5815
5816       /* Make a copy of the current text */
5817       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5818       new_event = gdk_event_copy ((GdkEvent *) event);
5819       g_object_unref (((GdkEventKey *) new_event)->window);
5820       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5821       gtk_widget_realize (tree_view->priv->search_window);
5822
5823       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5824                                         "popup-menu", G_CALLBACK (gtk_true),
5825                                         NULL);
5826
5827       /* Move the entry off screen */
5828       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5829       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5830                        gdk_screen_get_width (screen) + 1,
5831                        gdk_screen_get_height (screen) + 1);
5832       gtk_widget_show (tree_view->priv->search_window);
5833
5834       /* Send the event to the window.  If the preedit_changed signal is emitted
5835        * during this event, we will set priv->imcontext_changed  */
5836       tree_view->priv->imcontext_changed = FALSE;
5837       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5838       gdk_event_free (new_event);
5839       gtk_widget_hide (tree_view->priv->search_window);
5840
5841       g_signal_handler_disconnect (tree_view->priv->search_entry,
5842                                    popup_menu_id);
5843
5844       /* We check to make sure that the entry tried to handle the text, and that
5845        * the text has changed.
5846        */
5847       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5848       text_modified = strcmp (old_text, new_text) != 0;
5849       g_free (old_text);
5850       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5851           (retval && text_modified))               /* ...or the text was modified */
5852         {
5853           if (gtk_tree_view_real_start_interactive_search (tree_view,
5854                                                            gdk_event_get_device ((GdkEvent *) event),
5855                                                            FALSE))
5856             {
5857               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5858               return TRUE;
5859             }
5860           else
5861             {
5862               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5863               return FALSE;
5864             }
5865         }
5866     }
5867
5868   return FALSE;
5869 }
5870
5871 static gboolean
5872 gtk_tree_view_key_release (GtkWidget   *widget,
5873                            GdkEventKey *event)
5874 {
5875   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5876
5877   if (tree_view->priv->rubber_band_status)
5878     return TRUE;
5879
5880   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5881 }
5882
5883 /* FIXME Is this function necessary? Can I get an enter_notify event
5884  * w/o either an expose event or a mouse motion event?
5885  */
5886 static gboolean
5887 gtk_tree_view_enter_notify (GtkWidget        *widget,
5888                             GdkEventCrossing *event)
5889 {
5890   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5891   GtkRBTree *tree;
5892   GtkRBNode *node;
5893   gint new_y;
5894
5895   /* Sanity check it */
5896   if (event->window != tree_view->priv->bin_window)
5897     return FALSE;
5898
5899   if (tree_view->priv->tree == NULL)
5900     return FALSE;
5901
5902   if (event->mode == GDK_CROSSING_GRAB ||
5903       event->mode == GDK_CROSSING_GTK_GRAB ||
5904       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5905       event->mode == GDK_CROSSING_STATE_CHANGED)
5906     return TRUE;
5907
5908   /* find the node internally */
5909   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5910   if (new_y < 0)
5911     new_y = 0;
5912   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5913
5914   tree_view->priv->event_last_x = event->x;
5915   tree_view->priv->event_last_y = event->y;
5916
5917   if ((tree_view->priv->button_pressed_node == NULL) ||
5918       (tree_view->priv->button_pressed_node == node))
5919     prelight_or_select (tree_view, tree, node, event->x, event->y);
5920
5921   return TRUE;
5922 }
5923
5924 static gboolean
5925 gtk_tree_view_leave_notify (GtkWidget        *widget,
5926                             GdkEventCrossing *event)
5927 {
5928   GtkTreeView *tree_view;
5929
5930   if (event->mode == GDK_CROSSING_GRAB ||
5931       event->mode == GDK_CROSSING_GTK_GRAB ||
5932       event->mode == GDK_CROSSING_GTK_UNGRAB)
5933     return TRUE;
5934
5935   tree_view = GTK_TREE_VIEW (widget);
5936
5937   if (tree_view->priv->prelight_node)
5938     _gtk_tree_view_queue_draw_node (tree_view,
5939                                    tree_view->priv->prelight_tree,
5940                                    tree_view->priv->prelight_node,
5941                                    NULL);
5942
5943   tree_view->priv->event_last_x = -10000;
5944   tree_view->priv->event_last_y = -10000;
5945
5946   prelight_or_select (tree_view,
5947                       NULL, NULL,
5948                       -1000, -1000); /* coords not possibly over an arrow */
5949
5950   return TRUE;
5951 }
5952
5953
5954 static gint
5955 gtk_tree_view_focus_out (GtkWidget     *widget,
5956                          GdkEventFocus *event)
5957 {
5958   GtkTreeView *tree_view;
5959
5960   tree_view = GTK_TREE_VIEW (widget);
5961
5962   gtk_widget_queue_draw (widget);
5963
5964   /* destroy interactive search dialog */
5965   if (tree_view->priv->search_window)
5966     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5967                                       gdk_event_get_device ((GdkEvent *) event));
5968
5969   return FALSE;
5970 }
5971
5972
5973 /* Incremental Reflow
5974  */
5975
5976 static void
5977 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5978                                  GtkRBTree   *tree,
5979                                  GtkRBNode   *node)
5980 {
5981   GtkAllocation allocation;
5982   gint y;
5983
5984   y = _gtk_rbtree_node_find_offset (tree, node)
5985     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5986     + gtk_tree_view_get_effective_header_height (tree_view);
5987
5988   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5989   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5990                               0, y,
5991                               allocation.width,
5992                               GTK_RBNODE_GET_HEIGHT (node));
5993 }
5994
5995 static gboolean
5996 node_is_visible (GtkTreeView *tree_view,
5997                  GtkRBTree   *tree,
5998                  GtkRBNode   *node)
5999 {
6000   int y;
6001   int height;
6002
6003   y = _gtk_rbtree_node_find_offset (tree, node);
6004   height = gtk_tree_view_get_row_height (tree_view, node);
6005
6006   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6007       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6008                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6009     return TRUE;
6010
6011   return FALSE;
6012 }
6013
6014 /* Returns TRUE if it updated the size
6015  */
6016 static gboolean
6017 validate_row (GtkTreeView *tree_view,
6018               GtkRBTree   *tree,
6019               GtkRBNode   *node,
6020               GtkTreeIter *iter,
6021               GtkTreePath *path)
6022 {
6023   GtkTreeViewColumn *column;
6024   GList *list, *first_column, *last_column;
6025   gint height = 0;
6026   gint horizontal_separator;
6027   gint vertical_separator;
6028   gint depth = gtk_tree_path_get_depth (path);
6029   gboolean retval = FALSE;
6030   gboolean is_separator = FALSE;
6031   gboolean draw_vgrid_lines, draw_hgrid_lines;
6032   gint focus_pad;
6033   gint grid_line_width;
6034   gboolean wide_separators;
6035   gint separator_height;
6036
6037   /* double check the row needs validating */
6038   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6039       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6040     return FALSE;
6041
6042   is_separator = row_is_separator (tree_view, iter, NULL);
6043
6044   gtk_widget_style_get (GTK_WIDGET (tree_view),
6045                         "focus-padding", &focus_pad,
6046                         "horizontal-separator", &horizontal_separator,
6047                         "vertical-separator", &vertical_separator,
6048                         "grid-line-width", &grid_line_width,
6049                         "wide-separators",  &wide_separators,
6050                         "separator-height", &separator_height,
6051                         NULL);
6052
6053   draw_vgrid_lines =
6054     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6055     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6056   draw_hgrid_lines =
6057     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6058     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6059
6060   for (last_column = g_list_last (tree_view->priv->columns);
6061        last_column &&
6062        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6063        last_column = last_column->prev)
6064     ;
6065
6066   for (first_column = g_list_first (tree_view->priv->columns);
6067        first_column &&
6068        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6069        first_column = first_column->next)
6070     ;
6071
6072   for (list = tree_view->priv->columns; list; list = list->next)
6073     {
6074       gint padding = 0;
6075       gint original_width;
6076       gint new_width;
6077       gint row_height;
6078
6079       column = list->data;
6080
6081       if (!gtk_tree_view_column_get_visible (column))
6082         continue;
6083
6084       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6085           !_gtk_tree_view_column_cell_get_dirty (column))
6086         continue;
6087
6088       original_width = _gtk_tree_view_column_get_requested_width (column);
6089
6090       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6091                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6092                                                node->children?TRUE:FALSE);
6093       gtk_tree_view_column_cell_get_size (column,
6094                                           NULL, NULL, NULL,
6095                                           NULL, &row_height);
6096
6097       if (!is_separator)
6098         {
6099           row_height += vertical_separator;
6100           height = MAX (height, row_height);
6101           height = MAX (height, tree_view->priv->expander_size);
6102         }
6103       else
6104         {
6105           if (wide_separators)
6106             height = separator_height + 2 * focus_pad;
6107           else
6108             height = 2 + 2 * focus_pad;
6109         }
6110
6111       if (gtk_tree_view_is_expander_column (tree_view, column))
6112         {
6113           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6114
6115           if (gtk_tree_view_draw_expanders (tree_view))
6116             padding += depth * tree_view->priv->expander_size;
6117         }
6118       else
6119         padding += horizontal_separator;
6120
6121       if (draw_vgrid_lines)
6122         {
6123           if (list->data == first_column || list->data == last_column)
6124             padding += grid_line_width / 2.0;
6125           else
6126             padding += grid_line_width;
6127         }
6128
6129       /* Update the padding for the column */
6130       _gtk_tree_view_column_push_padding (column, padding);
6131       new_width = _gtk_tree_view_column_get_requested_width (column);
6132
6133       if (new_width > original_width)
6134         retval = TRUE;
6135     }
6136
6137   if (draw_hgrid_lines)
6138     height += grid_line_width;
6139
6140   if (height != GTK_RBNODE_GET_HEIGHT (node))
6141     {
6142       retval = TRUE;
6143       _gtk_rbtree_node_set_height (tree, node, height);
6144     }
6145   _gtk_rbtree_node_mark_valid (tree, node);
6146   tree_view->priv->post_validation_flag = TRUE;
6147
6148   return retval;
6149 }
6150
6151
6152 static void
6153 validate_visible_area (GtkTreeView *tree_view)
6154 {
6155   GtkAllocation allocation;
6156   GtkTreePath *path = NULL;
6157   GtkTreePath *above_path = NULL;
6158   GtkTreeIter iter;
6159   GtkRBTree *tree = NULL;
6160   GtkRBNode *node = NULL;
6161   gboolean need_redraw = FALSE;
6162   gboolean size_changed = FALSE;
6163   gint total_height;
6164   gint area_above = 0;
6165   gint area_below = 0;
6166
6167   if (tree_view->priv->tree == NULL)
6168     return;
6169
6170   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6171       tree_view->priv->scroll_to_path == NULL)
6172     return;
6173
6174   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6175   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6176
6177   if (total_height == 0)
6178     return;
6179
6180   /* First, we check to see if we need to scroll anywhere
6181    */
6182   if (tree_view->priv->scroll_to_path)
6183     {
6184       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6185       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6186         {
6187           /* we are going to scroll, and will update dy */
6188           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6189           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6190               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6191             {
6192               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6193               if (validate_row (tree_view, tree, node, &iter, path))
6194                 size_changed = TRUE;
6195             }
6196
6197           if (tree_view->priv->scroll_to_use_align)
6198             {
6199               gint height = gtk_tree_view_get_row_height (tree_view, node);
6200               area_above = (total_height - height) *
6201                 tree_view->priv->scroll_to_row_align;
6202               area_below = total_height - area_above - height;
6203               area_above = MAX (area_above, 0);
6204               area_below = MAX (area_below, 0);
6205             }
6206           else
6207             {
6208               /* two cases:
6209                * 1) row not visible
6210                * 2) row visible
6211                */
6212               gint dy;
6213               gint height = gtk_tree_view_get_row_height (tree_view, node);
6214
6215               dy = _gtk_rbtree_node_find_offset (tree, node);
6216
6217               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6218                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6219                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6220                 {
6221                   /* row visible: keep the row at the same position */
6222                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6223                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6224                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6225                                - dy - height;
6226                 }
6227               else
6228                 {
6229                   /* row not visible */
6230                   if (dy >= 0
6231                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6232                     {
6233                       /* row at the beginning -- fixed */
6234                       area_above = dy;
6235                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6236                                    - area_above - height;
6237                     }
6238                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6239                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6240                     {
6241                       /* row at the end -- fixed */
6242                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6243                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6244                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6245                                    area_above - height;
6246
6247                       if (area_below < 0)
6248                         {
6249                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6250                           area_below = 0;
6251                         }
6252                     }
6253                   else
6254                     {
6255                       /* row somewhere in the middle, bring it to the top
6256                        * of the view
6257                        */
6258                       area_above = 0;
6259                       area_below = total_height - height;
6260                     }
6261                 }
6262             }
6263         }
6264       else
6265         /* the scroll to isn't valid; ignore it.
6266          */
6267         {
6268           if (tree_view->priv->scroll_to_path && !path)
6269             {
6270               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6271               tree_view->priv->scroll_to_path = NULL;
6272             }
6273           if (path)
6274             gtk_tree_path_free (path);
6275           path = NULL;
6276         }
6277     }
6278
6279   /* We didn't have a scroll_to set, so we just handle things normally
6280    */
6281   if (path == NULL)
6282     {
6283       gint offset;
6284
6285       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6286                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6287                                         &tree, &node);
6288       if (node == NULL)
6289         {
6290           /* In this case, nothing has been validated */
6291           path = gtk_tree_path_new_first ();
6292           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6293         }
6294       else
6295         {
6296           path = _gtk_tree_path_new_from_rbtree (tree, node);
6297           total_height += offset;
6298         }
6299
6300       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6301
6302       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6303           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6304         {
6305           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6306           if (validate_row (tree_view, tree, node, &iter, path))
6307             size_changed = TRUE;
6308         }
6309       area_above = 0;
6310       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6311     }
6312
6313   above_path = gtk_tree_path_copy (path);
6314
6315   /* if we do not validate any row above the new top_row, we will make sure
6316    * that the row immediately above top_row has been validated. (if we do not
6317    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6318    * when invalidated that row's height will be zero. and this will mess up
6319    * scrolling).
6320    */
6321   if (area_above == 0)
6322     {
6323       GtkRBTree *tmptree;
6324       GtkRBNode *tmpnode;
6325
6326       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6327       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6328
6329       if (tmpnode)
6330         {
6331           GtkTreePath *tmppath;
6332           GtkTreeIter tmpiter;
6333
6334           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6335           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6336
6337           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6338               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6339             {
6340               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6341               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6342                 size_changed = TRUE;
6343             }
6344
6345           gtk_tree_path_free (tmppath);
6346         }
6347     }
6348
6349   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6350    * backwards is much slower then forward, as there is no iter_prev function.
6351    * We go forwards first in case we run out of tree.  Then we go backwards to
6352    * fill out the top.
6353    */
6354   while (node && area_below > 0)
6355     {
6356       if (node->children)
6357         {
6358           GtkTreeIter parent = iter;
6359           gboolean has_child;
6360
6361           tree = node->children;
6362           node = _gtk_rbtree_first (tree);
6363
6364           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6365                                                     &iter,
6366                                                     &parent);
6367           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6368           gtk_tree_path_down (path);
6369         }
6370       else
6371         {
6372           gboolean done = FALSE;
6373           do
6374             {
6375               node = _gtk_rbtree_next (tree, node);
6376               if (node != NULL)
6377                 {
6378                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6379                   done = TRUE;
6380                   gtk_tree_path_next (path);
6381
6382                   /* Sanity Check! */
6383                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6384                 }
6385               else
6386                 {
6387                   GtkTreeIter parent_iter = iter;
6388                   gboolean has_parent;
6389
6390                   node = tree->parent_node;
6391                   tree = tree->parent_tree;
6392                   if (tree == NULL)
6393                     break;
6394                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6395                                                            &iter,
6396                                                            &parent_iter);
6397                   gtk_tree_path_up (path);
6398
6399                   /* Sanity check */
6400                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6401                 }
6402             }
6403           while (!done);
6404         }
6405
6406       if (!node)
6407         break;
6408
6409       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6410           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6411         {
6412           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6413           if (validate_row (tree_view, tree, node, &iter, path))
6414               size_changed = TRUE;
6415         }
6416
6417       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6418     }
6419   gtk_tree_path_free (path);
6420
6421   /* If we ran out of tree, and have extra area_below left, we need to add it
6422    * to area_above */
6423   if (area_below > 0)
6424     area_above += area_below;
6425
6426   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6427
6428   /* We walk backwards */
6429   while (area_above > 0)
6430     {
6431       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6432
6433       /* Always find the new path in the tree.  We cannot just assume
6434        * a gtk_tree_path_prev() is enough here, as there might be children
6435        * in between this node and the previous sibling node.  If this
6436        * appears to be a performance hotspot in profiles, we can look into
6437        * intrigate logic for keeping path, node and iter in sync like
6438        * we do for forward walks.  (Which will be hard because of the lacking
6439        * iter_prev).
6440        */
6441
6442       if (node == NULL)
6443         break;
6444
6445       gtk_tree_path_free (above_path);
6446       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6447
6448       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6449
6450       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6451           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6452         {
6453           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6454           if (validate_row (tree_view, tree, node, &iter, above_path))
6455             size_changed = TRUE;
6456         }
6457       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6458     }
6459
6460   /* if we scrolled to a path, we need to set the dy here,
6461    * and sync the top row accordingly
6462    */
6463   if (tree_view->priv->scroll_to_path)
6464     {
6465       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6466       gtk_tree_view_top_row_to_dy (tree_view);
6467
6468       need_redraw = TRUE;
6469     }
6470   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6471     {
6472       /* when we are not scrolling, we should never set dy to something
6473        * else than zero. we update top_row to be in sync with dy = 0.
6474        */
6475       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6476       gtk_tree_view_dy_to_top_row (tree_view);
6477     }
6478   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6479     {
6480       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6481       gtk_tree_view_dy_to_top_row (tree_view);
6482     }
6483   else
6484     gtk_tree_view_top_row_to_dy (tree_view);
6485
6486   /* update width/height and queue a resize */
6487   if (size_changed)
6488     {
6489       GtkRequisition requisition;
6490
6491       /* We temporarily guess a size, under the assumption that it will be the
6492        * same when we get our next size_allocate.  If we don't do this, we'll be
6493        * in an inconsistent state if we call top_row_to_dy. */
6494
6495       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6496                                      &requisition, NULL);
6497       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6498                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6499       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6500                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6501       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6502     }
6503
6504   if (tree_view->priv->scroll_to_path)
6505     {
6506       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6507       tree_view->priv->scroll_to_path = NULL;
6508     }
6509
6510   if (above_path)
6511     gtk_tree_path_free (above_path);
6512
6513   if (tree_view->priv->scroll_to_column)
6514     {
6515       tree_view->priv->scroll_to_column = NULL;
6516     }
6517   if (need_redraw)
6518     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6519 }
6520
6521 static void
6522 initialize_fixed_height_mode (GtkTreeView *tree_view)
6523 {
6524   if (!tree_view->priv->tree)
6525     return;
6526
6527   if (tree_view->priv->fixed_height < 0)
6528     {
6529       GtkTreeIter iter;
6530       GtkTreePath *path;
6531
6532       GtkRBTree *tree = NULL;
6533       GtkRBNode *node = NULL;
6534
6535       tree = tree_view->priv->tree;
6536       node = tree->root;
6537
6538       path = _gtk_tree_path_new_from_rbtree (tree, node);
6539       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6540
6541       validate_row (tree_view, tree, node, &iter, path);
6542
6543       gtk_tree_path_free (path);
6544
6545       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6546     }
6547
6548    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6549                                  tree_view->priv->fixed_height, TRUE);
6550 }
6551
6552 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6553  * the left-most uninvalidated node.  We then try walking right, validating
6554  * nodes.  Once we find a valid node, we repeat the previous process of finding
6555  * the first invalid node.
6556  */
6557
6558 static gboolean
6559 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6560 {
6561   GtkRBTree *tree = NULL;
6562   GtkRBNode *node = NULL;
6563   gboolean validated_area = FALSE;
6564   gint retval = TRUE;
6565   GtkTreePath *path = NULL;
6566   GtkTreeIter iter;
6567   GTimer *timer;
6568   gint i = 0;
6569
6570   gint y = -1;
6571   gint prev_height = -1;
6572   gboolean fixed_height = TRUE;
6573
6574   g_assert (tree_view);
6575
6576   if (tree_view->priv->tree == NULL)
6577       return FALSE;
6578
6579   if (tree_view->priv->fixed_height_mode)
6580     {
6581       if (tree_view->priv->fixed_height < 0)
6582         initialize_fixed_height_mode (tree_view);
6583
6584       return FALSE;
6585     }
6586
6587   timer = g_timer_new ();
6588   g_timer_start (timer);
6589
6590   do
6591     {
6592       gboolean changed = FALSE;
6593
6594       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6595         {
6596           retval = FALSE;
6597           goto done;
6598         }
6599
6600       if (path != NULL)
6601         {
6602           node = _gtk_rbtree_next (tree, node);
6603           if (node != NULL)
6604             {
6605               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6606               gtk_tree_path_next (path);
6607             }
6608           else
6609             {
6610               gtk_tree_path_free (path);
6611               path = NULL;
6612             }
6613         }
6614
6615       if (path == NULL)
6616         {
6617           tree = tree_view->priv->tree;
6618           node = tree_view->priv->tree->root;
6619
6620           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6621
6622           do
6623             {
6624               if (!_gtk_rbtree_is_nil (node->left) &&
6625                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6626                 {
6627                   node = node->left;
6628                 }
6629               else if (!_gtk_rbtree_is_nil (node->right) &&
6630                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6631                 {
6632                   node = node->right;
6633                 }
6634               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6635                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6636                 {
6637                   break;
6638                 }
6639               else if (node->children != NULL)
6640                 {
6641                   tree = node->children;
6642                   node = tree->root;
6643                 }
6644               else
6645                 /* RBTree corruption!  All bad */
6646                 g_assert_not_reached ();
6647             }
6648           while (TRUE);
6649           path = _gtk_tree_path_new_from_rbtree (tree, node);
6650           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6651         }
6652
6653       changed = validate_row (tree_view, tree, node, &iter, path);
6654       validated_area = changed || validated_area;
6655
6656       if (changed)
6657         {
6658           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6659
6660           if (y == -1 || y > offset)
6661             y = offset;
6662         }
6663
6664       if (!tree_view->priv->fixed_height_check)
6665         {
6666           gint height;
6667
6668           height = gtk_tree_view_get_row_height (tree_view, node);
6669           if (prev_height < 0)
6670             prev_height = height;
6671           else if (prev_height != height)
6672             fixed_height = FALSE;
6673         }
6674
6675       i++;
6676     }
6677   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6678
6679   if (!tree_view->priv->fixed_height_check)
6680    {
6681      if (fixed_height)
6682        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6683
6684      tree_view->priv->fixed_height_check = 1;
6685    }
6686
6687  done:
6688   if (validated_area)
6689     {
6690       GtkRequisition requisition;
6691
6692       /* We temporarily guess a size, under the assumption that it will be the
6693        * same when we get our next size_allocate.  If we don't do this, we'll be
6694        * in an inconsistent state when we call top_row_to_dy. */
6695
6696       /* FIXME: This is called from size_request, for some reason it is not infinitely
6697        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6698        * not allowed (from inside ->get_preferred_width/height() implementations, one
6699        * should call the vfuncs directly). However what is desired here is the full
6700        * size including any margins and limited by any alignment (i.e. after
6701        * GtkWidget:adjust_size_request() is called).
6702        *
6703        * Currently bypassing this but the real solution is to not update the scroll adjustments
6704        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6705        */
6706       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6707
6708       /* If rows above the current position have changed height, this has
6709        * affected the current view and thus needs a redraw.
6710        */
6711       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6712         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6713
6714       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6715                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6716       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6717                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6718
6719       if (queue_resize)
6720         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6721     }
6722
6723   if (path) gtk_tree_path_free (path);
6724   g_timer_destroy (timer);
6725
6726   return retval;
6727 }
6728
6729 static gboolean
6730 validate_rows (GtkTreeView *tree_view)
6731 {
6732   gboolean retval;
6733
6734   retval = do_validate_rows (tree_view, TRUE);
6735
6736   if (! retval && tree_view->priv->validate_rows_timer)
6737     {
6738       g_source_remove (tree_view->priv->validate_rows_timer);
6739       tree_view->priv->validate_rows_timer = 0;
6740     }
6741
6742   return retval;
6743 }
6744
6745 static gboolean
6746 validate_rows_handler (GtkTreeView *tree_view)
6747 {
6748   gboolean retval;
6749
6750   retval = do_validate_rows (tree_view, TRUE);
6751   if (! retval && tree_view->priv->validate_rows_timer)
6752     {
6753       g_source_remove (tree_view->priv->validate_rows_timer);
6754       tree_view->priv->validate_rows_timer = 0;
6755     }
6756
6757   return retval;
6758 }
6759
6760 static gboolean
6761 do_presize_handler (GtkTreeView *tree_view)
6762 {
6763   if (tree_view->priv->mark_rows_col_dirty)
6764     {
6765       if (tree_view->priv->tree)
6766         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6767       tree_view->priv->mark_rows_col_dirty = FALSE;
6768     }
6769   validate_visible_area (tree_view);
6770   tree_view->priv->presize_handler_timer = 0;
6771
6772   if (tree_view->priv->fixed_height_mode)
6773     {
6774       GtkRequisition requisition;
6775
6776       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6777                                      &requisition, NULL);
6778
6779       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6780                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6781       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6782                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6783       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6784     }
6785
6786   return FALSE;
6787 }
6788
6789 static gboolean
6790 presize_handler_callback (gpointer data)
6791 {
6792   do_presize_handler (GTK_TREE_VIEW (data));
6793
6794   return FALSE;
6795 }
6796
6797 static void
6798 install_presize_handler (GtkTreeView *tree_view)
6799 {
6800   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6801     return;
6802
6803   if (! tree_view->priv->presize_handler_timer)
6804     {
6805       tree_view->priv->presize_handler_timer =
6806         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6807     }
6808   if (! tree_view->priv->validate_rows_timer)
6809     {
6810       tree_view->priv->validate_rows_timer =
6811         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6812     }
6813 }
6814
6815 static void
6816 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6817 {
6818   /* Prior to drawing, we make sure the visible area is validated. */
6819   if (tree_view->priv->presize_handler_timer)
6820     {
6821       g_source_remove (tree_view->priv->presize_handler_timer);
6822       tree_view->priv->presize_handler_timer = 0;
6823
6824       do_presize_handler (tree_view);
6825     }
6826
6827   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6828 }
6829
6830 static gboolean
6831 scroll_sync_handler (GtkTreeView *tree_view)
6832 {
6833   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6834     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6835   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6836     gtk_tree_view_top_row_to_dy (tree_view);
6837   else
6838     gtk_tree_view_dy_to_top_row (tree_view);
6839
6840   tree_view->priv->scroll_sync_timer = 0;
6841
6842   return FALSE;
6843 }
6844
6845 static void
6846 install_scroll_sync_handler (GtkTreeView *tree_view)
6847 {
6848   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6849     return;
6850
6851   if (!tree_view->priv->scroll_sync_timer)
6852     {
6853       tree_view->priv->scroll_sync_timer =
6854         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6855     }
6856 }
6857
6858 static void
6859 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6860                            GtkTreePath *path,
6861                            gint         offset)
6862 {
6863   gtk_tree_row_reference_free (tree_view->priv->top_row);
6864
6865   if (!path)
6866     {
6867       tree_view->priv->top_row = NULL;
6868       tree_view->priv->top_row_dy = 0;
6869     }
6870   else
6871     {
6872       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6873       tree_view->priv->top_row_dy = offset;
6874     }
6875 }
6876
6877 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6878  * it's set to be NULL, and top_row_dy is 0;
6879  */
6880 static void
6881 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6882 {
6883   gint offset;
6884   GtkTreePath *path;
6885   GtkRBTree *tree;
6886   GtkRBNode *node;
6887
6888   if (tree_view->priv->tree == NULL)
6889     {
6890       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6891     }
6892   else
6893     {
6894       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6895                                         tree_view->priv->dy,
6896                                         &tree, &node);
6897
6898       if (tree == NULL)
6899         {
6900           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6901         }
6902       else
6903         {
6904           path = _gtk_tree_path_new_from_rbtree (tree, node);
6905           gtk_tree_view_set_top_row (tree_view, path, offset);
6906           gtk_tree_path_free (path);
6907         }
6908     }
6909 }
6910
6911 static void
6912 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6913 {
6914   GtkTreePath *path;
6915   GtkRBTree *tree;
6916   GtkRBNode *node;
6917   int new_dy;
6918
6919   /* Avoid recursive calls */
6920   if (tree_view->priv->in_top_row_to_dy)
6921     return;
6922
6923   if (tree_view->priv->top_row)
6924     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6925   else
6926     path = NULL;
6927
6928   if (!path)
6929     tree = NULL;
6930   else
6931     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6932
6933   if (path)
6934     gtk_tree_path_free (path);
6935
6936   if (tree == NULL)
6937     {
6938       /* keep dy and set new toprow */
6939       gtk_tree_row_reference_free (tree_view->priv->top_row);
6940       tree_view->priv->top_row = NULL;
6941       tree_view->priv->top_row_dy = 0;
6942       /* DO NOT install the idle handler */
6943       gtk_tree_view_dy_to_top_row (tree_view);
6944       return;
6945     }
6946
6947   if (gtk_tree_view_get_row_height (tree_view, node)
6948       < tree_view->priv->top_row_dy)
6949     {
6950       /* new top row -- do NOT install the idle handler */
6951       gtk_tree_view_dy_to_top_row (tree_view);
6952       return;
6953     }
6954
6955   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6956   new_dy += tree_view->priv->top_row_dy;
6957
6958   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6959     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6960
6961   new_dy = MAX (0, new_dy);
6962
6963   tree_view->priv->in_top_row_to_dy = TRUE;
6964   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6965   tree_view->priv->in_top_row_to_dy = FALSE;
6966 }
6967
6968
6969 void
6970 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6971                                             gboolean     install_handler)
6972 {
6973   tree_view->priv->mark_rows_col_dirty = TRUE;
6974
6975   if (install_handler)
6976     install_presize_handler (tree_view);
6977 }
6978
6979 /*
6980  * This function works synchronously (due to the while (validate_rows...)
6981  * loop).
6982  *
6983  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6984  * here. You now need to check that yourself.
6985  */
6986 void
6987 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6988                                 GtkTreeViewColumn *column)
6989 {
6990   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6991   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6992
6993   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6994
6995   do_presize_handler (tree_view);
6996   while (validate_rows (tree_view));
6997
6998   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6999 }
7000
7001 /* Drag-and-drop */
7002
7003 static void
7004 set_source_row (GdkDragContext *context,
7005                 GtkTreeModel   *model,
7006                 GtkTreePath    *source_row)
7007 {
7008   g_object_set_data_full (G_OBJECT (context),
7009                           I_("gtk-tree-view-source-row"),
7010                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7011                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7012 }
7013
7014 static GtkTreePath*
7015 get_source_row (GdkDragContext *context)
7016 {
7017   GtkTreeRowReference *ref =
7018     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7019
7020   if (ref)
7021     return gtk_tree_row_reference_get_path (ref);
7022   else
7023     return NULL;
7024 }
7025
7026 typedef struct
7027 {
7028   GtkTreeRowReference *dest_row;
7029   guint                path_down_mode   : 1;
7030   guint                empty_view_drop  : 1;
7031   guint                drop_append_mode : 1;
7032 }
7033 DestRow;
7034
7035 static void
7036 dest_row_free (gpointer data)
7037 {
7038   DestRow *dr = (DestRow *)data;
7039
7040   gtk_tree_row_reference_free (dr->dest_row);
7041   g_slice_free (DestRow, dr);
7042 }
7043
7044 static void
7045 set_dest_row (GdkDragContext *context,
7046               GtkTreeModel   *model,
7047               GtkTreePath    *dest_row,
7048               gboolean        path_down_mode,
7049               gboolean        empty_view_drop,
7050               gboolean        drop_append_mode)
7051 {
7052   DestRow *dr;
7053
7054   if (!dest_row)
7055     {
7056       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7057                               NULL, NULL);
7058       return;
7059     }
7060
7061   dr = g_slice_new (DestRow);
7062
7063   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7064   dr->path_down_mode = path_down_mode != FALSE;
7065   dr->empty_view_drop = empty_view_drop != FALSE;
7066   dr->drop_append_mode = drop_append_mode != FALSE;
7067
7068   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7069                           dr, (GDestroyNotify) dest_row_free);
7070 }
7071
7072 static GtkTreePath*
7073 get_dest_row (GdkDragContext *context,
7074               gboolean       *path_down_mode)
7075 {
7076   DestRow *dr =
7077     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7078
7079   if (dr)
7080     {
7081       GtkTreePath *path = NULL;
7082
7083       if (path_down_mode)
7084         *path_down_mode = dr->path_down_mode;
7085
7086       if (dr->dest_row)
7087         path = gtk_tree_row_reference_get_path (dr->dest_row);
7088       else if (dr->empty_view_drop)
7089         path = gtk_tree_path_new_from_indices (0, -1);
7090       else
7091         path = NULL;
7092
7093       if (path && dr->drop_append_mode)
7094         gtk_tree_path_next (path);
7095
7096       return path;
7097     }
7098   else
7099     return NULL;
7100 }
7101
7102 /* Get/set whether drag_motion requested the drag data and
7103  * drag_data_received should thus not actually insert the data,
7104  * since the data doesn't result from a drop.
7105  */
7106 static void
7107 set_status_pending (GdkDragContext *context,
7108                     GdkDragAction   suggested_action)
7109 {
7110   g_object_set_data (G_OBJECT (context),
7111                      I_("gtk-tree-view-status-pending"),
7112                      GINT_TO_POINTER (suggested_action));
7113 }
7114
7115 static GdkDragAction
7116 get_status_pending (GdkDragContext *context)
7117 {
7118   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7119                                              "gtk-tree-view-status-pending"));
7120 }
7121
7122 static TreeViewDragInfo*
7123 get_info (GtkTreeView *tree_view)
7124 {
7125   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7126 }
7127
7128 static void
7129 destroy_info (TreeViewDragInfo *di)
7130 {
7131   g_slice_free (TreeViewDragInfo, di);
7132 }
7133
7134 static TreeViewDragInfo*
7135 ensure_info (GtkTreeView *tree_view)
7136 {
7137   TreeViewDragInfo *di;
7138
7139   di = get_info (tree_view);
7140
7141   if (di == NULL)
7142     {
7143       di = g_slice_new0 (TreeViewDragInfo);
7144
7145       g_object_set_data_full (G_OBJECT (tree_view),
7146                               I_("gtk-tree-view-drag-info"),
7147                               di,
7148                               (GDestroyNotify) destroy_info);
7149     }
7150
7151   return di;
7152 }
7153
7154 static void
7155 remove_info (GtkTreeView *tree_view)
7156 {
7157   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7158 }
7159
7160 #if 0
7161 static gint
7162 drag_scan_timeout (gpointer data)
7163 {
7164   GtkTreeView *tree_view;
7165   gint x, y;
7166   GdkModifierType state;
7167   GtkTreePath *path = NULL;
7168   GtkTreeViewColumn *column = NULL;
7169   GdkRectangle visible_rect;
7170
7171   GDK_THREADS_ENTER ();
7172
7173   tree_view = GTK_TREE_VIEW (data);
7174
7175   gdk_window_get_device_position (tree_view->priv->bin_window,
7176                                   gdk_device_manager_get_client_pointer (
7177                                     gdk_display_get_device_manager (
7178                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7179                                   &x, &y, &state);
7180
7181   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7182
7183   /* See if we are near the edge. */
7184   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7185       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7186       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7187       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7188     {
7189       gtk_tree_view_get_path_at_pos (tree_view,
7190                                      tree_view->priv->bin_window,
7191                                      x, y,
7192                                      &path,
7193                                      &column,
7194                                      NULL,
7195                                      NULL);
7196
7197       if (path != NULL)
7198         {
7199           gtk_tree_view_scroll_to_cell (tree_view,
7200                                         path,
7201                                         column,
7202                                         TRUE,
7203                                         0.5, 0.5);
7204
7205           gtk_tree_path_free (path);
7206         }
7207     }
7208
7209   GDK_THREADS_LEAVE ();
7210
7211   return TRUE;
7212 }
7213 #endif /* 0 */
7214
7215 static void
7216 add_scroll_timeout (GtkTreeView *tree_view)
7217 {
7218   if (tree_view->priv->scroll_timeout == 0)
7219     {
7220       tree_view->priv->scroll_timeout =
7221         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7222     }
7223 }
7224
7225 static void
7226 remove_scroll_timeout (GtkTreeView *tree_view)
7227 {
7228   if (tree_view->priv->scroll_timeout != 0)
7229     {
7230       g_source_remove (tree_view->priv->scroll_timeout);
7231       tree_view->priv->scroll_timeout = 0;
7232     }
7233 }
7234
7235 static gboolean
7236 check_model_dnd (GtkTreeModel *model,
7237                  GType         required_iface,
7238                  const gchar  *signal)
7239 {
7240   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7241     {
7242       g_warning ("You must override the default '%s' handler "
7243                  "on GtkTreeView when using models that don't support "
7244                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7245                  "is to connect to '%s' and call "
7246                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7247                  "the default handler from running. Look at the source code "
7248                  "for the default handler in gtktreeview.c to get an idea what "
7249                  "your handler should do. (gtktreeview.c is in the GTK source "
7250                  "code.) If you're using GTK from a language other than C, "
7251                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7252                  signal, g_type_name (required_iface), signal);
7253       return FALSE;
7254     }
7255   else
7256     return TRUE;
7257 }
7258
7259 static void
7260 remove_open_timeout (GtkTreeView *tree_view)
7261 {
7262   if (tree_view->priv->open_dest_timeout != 0)
7263     {
7264       g_source_remove (tree_view->priv->open_dest_timeout);
7265       tree_view->priv->open_dest_timeout = 0;
7266     }
7267 }
7268
7269
7270 static gint
7271 open_row_timeout (gpointer data)
7272 {
7273   GtkTreeView *tree_view = data;
7274   GtkTreePath *dest_path = NULL;
7275   GtkTreeViewDropPosition pos;
7276   gboolean result = FALSE;
7277
7278   gtk_tree_view_get_drag_dest_row (tree_view,
7279                                    &dest_path,
7280                                    &pos);
7281
7282   if (dest_path &&
7283       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7284        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7285     {
7286       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7287       tree_view->priv->open_dest_timeout = 0;
7288
7289       gtk_tree_path_free (dest_path);
7290     }
7291   else
7292     {
7293       if (dest_path)
7294         gtk_tree_path_free (dest_path);
7295
7296       result = TRUE;
7297     }
7298
7299   return result;
7300 }
7301
7302 static gboolean
7303 scroll_row_timeout (gpointer data)
7304 {
7305   GtkTreeView *tree_view = data;
7306
7307   gtk_tree_view_vertical_autoscroll (tree_view);
7308
7309   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7310     gtk_tree_view_update_rubber_band (tree_view);
7311
7312   return TRUE;
7313 }
7314
7315 /* Returns TRUE if event should not be propagated to parent widgets */
7316 static gboolean
7317 set_destination_row (GtkTreeView    *tree_view,
7318                      GdkDragContext *context,
7319                      /* coordinates relative to the widget */
7320                      gint            x,
7321                      gint            y,
7322                      GdkDragAction  *suggested_action,
7323                      GdkAtom        *target)
7324 {
7325   GtkTreePath *path = NULL;
7326   GtkTreeViewDropPosition pos;
7327   GtkTreeViewDropPosition old_pos;
7328   TreeViewDragInfo *di;
7329   GtkWidget *widget;
7330   GtkTreePath *old_dest_path = NULL;
7331   gboolean can_drop = FALSE;
7332
7333   *suggested_action = 0;
7334   *target = GDK_NONE;
7335
7336   widget = GTK_WIDGET (tree_view);
7337
7338   di = get_info (tree_view);
7339
7340   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7341     {
7342       /* someone unset us as a drag dest, note that if
7343        * we return FALSE drag_leave isn't called
7344        */
7345
7346       gtk_tree_view_set_drag_dest_row (tree_view,
7347                                        NULL,
7348                                        GTK_TREE_VIEW_DROP_BEFORE);
7349
7350       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7351       remove_open_timeout (GTK_TREE_VIEW (widget));
7352
7353       return FALSE; /* no longer a drop site */
7354     }
7355
7356   *target = gtk_drag_dest_find_target (widget, context,
7357                                        gtk_drag_dest_get_target_list (widget));
7358   if (*target == GDK_NONE)
7359     {
7360       return FALSE;
7361     }
7362
7363   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7364                                           x, y,
7365                                           &path,
7366                                           &pos))
7367     {
7368       gint n_children;
7369       GtkTreeModel *model;
7370
7371       remove_open_timeout (tree_view);
7372
7373       /* the row got dropped on empty space, let's setup a special case
7374        */
7375
7376       if (path)
7377         gtk_tree_path_free (path);
7378
7379       model = gtk_tree_view_get_model (tree_view);
7380
7381       n_children = gtk_tree_model_iter_n_children (model, NULL);
7382       if (n_children)
7383         {
7384           pos = GTK_TREE_VIEW_DROP_AFTER;
7385           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7386         }
7387       else
7388         {
7389           pos = GTK_TREE_VIEW_DROP_BEFORE;
7390           path = gtk_tree_path_new_from_indices (0, -1);
7391         }
7392
7393       can_drop = TRUE;
7394
7395       goto out;
7396     }
7397
7398   g_assert (path);
7399
7400   /* If we left the current row's "open" zone, unset the timeout for
7401    * opening the row
7402    */
7403   gtk_tree_view_get_drag_dest_row (tree_view,
7404                                    &old_dest_path,
7405                                    &old_pos);
7406
7407   if (old_dest_path &&
7408       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7409        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7410          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7411     remove_open_timeout (tree_view);
7412
7413   if (old_dest_path)
7414     gtk_tree_path_free (old_dest_path);
7415
7416   if (TRUE /* FIXME if the location droppable predicate */)
7417     {
7418       can_drop = TRUE;
7419     }
7420
7421 out:
7422   if (can_drop)
7423     {
7424       GtkWidget *source_widget;
7425
7426       *suggested_action = gdk_drag_context_get_suggested_action (context);
7427       source_widget = gtk_drag_get_source_widget (context);
7428
7429       if (source_widget == widget)
7430         {
7431           /* Default to MOVE, unless the user has
7432            * pressed ctrl or shift to affect available actions
7433            */
7434           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7435             *suggested_action = GDK_ACTION_MOVE;
7436         }
7437
7438       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7439                                        path, pos);
7440     }
7441   else
7442     {
7443       /* can't drop here */
7444       remove_open_timeout (tree_view);
7445
7446       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7447                                        NULL,
7448                                        GTK_TREE_VIEW_DROP_BEFORE);
7449     }
7450
7451   if (path)
7452     gtk_tree_path_free (path);
7453
7454   return TRUE;
7455 }
7456
7457 static GtkTreePath*
7458 get_logical_dest_row (GtkTreeView *tree_view,
7459                       gboolean    *path_down_mode,
7460                       gboolean    *drop_append_mode)
7461 {
7462   /* adjust path to point to the row the drop goes in front of */
7463   GtkTreePath *path = NULL;
7464   GtkTreeViewDropPosition pos;
7465
7466   g_return_val_if_fail (path_down_mode != NULL, NULL);
7467   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7468
7469   *path_down_mode = FALSE;
7470   *drop_append_mode = 0;
7471
7472   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7473
7474   if (path == NULL)
7475     return NULL;
7476
7477   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7478     ; /* do nothing */
7479   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7480            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7481     *path_down_mode = TRUE;
7482   else
7483     {
7484       GtkTreeIter iter;
7485       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7486
7487       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7488
7489       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7490           !gtk_tree_model_iter_next (model, &iter))
7491         *drop_append_mode = 1;
7492       else
7493         {
7494           *drop_append_mode = 0;
7495           gtk_tree_path_next (path);
7496         }
7497     }
7498
7499   return path;
7500 }
7501
7502 static gboolean
7503 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7504                                         GdkEventMotion   *event)
7505 {
7506   GtkWidget *widget = GTK_WIDGET (tree_view);
7507   GdkDragContext *context;
7508   TreeViewDragInfo *di;
7509   GtkTreePath *path = NULL;
7510   gint button;
7511   gint cell_x, cell_y;
7512   GtkTreeModel *model;
7513   gboolean retval = FALSE;
7514
7515   di = get_info (tree_view);
7516
7517   if (di == NULL || !di->source_set)
7518     goto out;
7519
7520   if (tree_view->priv->pressed_button < 0)
7521     goto out;
7522
7523   if (!gtk_drag_check_threshold (widget,
7524                                  tree_view->priv->press_start_x,
7525                                  tree_view->priv->press_start_y,
7526                                  event->x, event->y))
7527     goto out;
7528
7529   model = gtk_tree_view_get_model (tree_view);
7530
7531   if (model == NULL)
7532     goto out;
7533
7534   button = tree_view->priv->pressed_button;
7535   tree_view->priv->pressed_button = -1;
7536
7537   gtk_tree_view_get_path_at_pos (tree_view,
7538                                  tree_view->priv->press_start_x,
7539                                  tree_view->priv->press_start_y,
7540                                  &path,
7541                                  NULL,
7542                                  &cell_x,
7543                                  &cell_y);
7544
7545   if (path == NULL)
7546     goto out;
7547
7548   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7549       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7550                                            path))
7551     goto out;
7552
7553   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7554     goto out;
7555
7556   /* Now we can begin the drag */
7557
7558   retval = TRUE;
7559
7560   context = gtk_drag_begin (widget,
7561                             gtk_drag_source_get_target_list (widget),
7562                             di->source_actions,
7563                             button,
7564                             (GdkEvent*)event);
7565
7566   set_source_row (context, model, path);
7567
7568  out:
7569   if (path)
7570     gtk_tree_path_free (path);
7571
7572   return retval;
7573 }
7574
7575
7576 static void
7577 gtk_tree_view_drag_begin (GtkWidget      *widget,
7578                           GdkDragContext *context)
7579 {
7580   GtkTreeView *tree_view;
7581   GtkTreePath *path = NULL;
7582   gint cell_x, cell_y;
7583   cairo_surface_t *row_pix;
7584   TreeViewDragInfo *di;
7585
7586   tree_view = GTK_TREE_VIEW (widget);
7587
7588   /* if the user uses a custom DND source impl, we don't set the icon here */
7589   di = get_info (tree_view);
7590
7591   if (di == NULL || !di->source_set)
7592     return;
7593
7594   gtk_tree_view_get_path_at_pos (tree_view,
7595                                  tree_view->priv->press_start_x,
7596                                  tree_view->priv->press_start_y,
7597                                  &path,
7598                                  NULL,
7599                                  &cell_x,
7600                                  &cell_y);
7601
7602   /* If path is NULL, there's nothing we can drag.  For now, we silently
7603    * bail out.  Actually, dragging should not be possible from an empty
7604    * tree view, but there's no way we can cancel that from here.
7605    * Automatically unsetting the tree view as drag source for empty models
7606    * is something that would likely break other people's code ...
7607    */
7608   if (!path)
7609     return;
7610
7611   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7612                                                 path);
7613   cairo_surface_set_device_offset (row_pix,
7614                                    /* the + 1 is for the black border in the icon */
7615                                    - (tree_view->priv->press_start_x + 1),
7616                                    - (cell_y + 1));
7617
7618   gtk_drag_set_icon_surface (context, row_pix);
7619
7620   cairo_surface_destroy (row_pix);
7621   gtk_tree_path_free (path);
7622 }
7623
7624 static void
7625 gtk_tree_view_drag_end (GtkWidget      *widget,
7626                         GdkDragContext *context)
7627 {
7628   /* do nothing */
7629 }
7630
7631 /* Default signal implementations for the drag signals */
7632 static void
7633 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7634                              GdkDragContext   *context,
7635                              GtkSelectionData *selection_data,
7636                              guint             info,
7637                              guint             time)
7638 {
7639   GtkTreeView *tree_view;
7640   GtkTreeModel *model;
7641   TreeViewDragInfo *di;
7642   GtkTreePath *source_row;
7643
7644   tree_view = GTK_TREE_VIEW (widget);
7645
7646   model = gtk_tree_view_get_model (tree_view);
7647
7648   if (model == NULL)
7649     return;
7650
7651   di = get_info (GTK_TREE_VIEW (widget));
7652
7653   if (di == NULL)
7654     return;
7655
7656   source_row = get_source_row (context);
7657
7658   if (source_row == NULL)
7659     return;
7660
7661   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7662    * any model; for DragSource models there are some other targets
7663    * we also support.
7664    */
7665
7666   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7667       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7668                                           source_row,
7669                                           selection_data))
7670     goto done;
7671
7672   /* If drag_data_get does nothing, try providing row data. */
7673   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7674     {
7675       gtk_tree_set_row_drag_data (selection_data,
7676                                   model,
7677                                   source_row);
7678     }
7679
7680  done:
7681   gtk_tree_path_free (source_row);
7682 }
7683
7684
7685 static void
7686 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7687                                 GdkDragContext *context)
7688 {
7689   TreeViewDragInfo *di;
7690   GtkTreeModel *model;
7691   GtkTreeView *tree_view;
7692   GtkTreePath *source_row;
7693
7694   tree_view = GTK_TREE_VIEW (widget);
7695   model = gtk_tree_view_get_model (tree_view);
7696
7697   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7698     return;
7699
7700   di = get_info (tree_view);
7701
7702   if (di == NULL)
7703     return;
7704
7705   source_row = get_source_row (context);
7706
7707   if (source_row == NULL)
7708     return;
7709
7710   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7711                                          source_row);
7712
7713   gtk_tree_path_free (source_row);
7714
7715   set_source_row (context, NULL, NULL);
7716 }
7717
7718 static void
7719 gtk_tree_view_drag_leave (GtkWidget      *widget,
7720                           GdkDragContext *context,
7721                           guint             time)
7722 {
7723   /* unset any highlight row */
7724   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7725                                    NULL,
7726                                    GTK_TREE_VIEW_DROP_BEFORE);
7727
7728   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7729   remove_open_timeout (GTK_TREE_VIEW (widget));
7730 }
7731
7732
7733 static gboolean
7734 gtk_tree_view_drag_motion (GtkWidget        *widget,
7735                            GdkDragContext   *context,
7736                            /* coordinates relative to the widget */
7737                            gint              x,
7738                            gint              y,
7739                            guint             time)
7740 {
7741   gboolean empty;
7742   GtkTreePath *path = NULL;
7743   GtkTreeViewDropPosition pos;
7744   GtkTreeView *tree_view;
7745   GdkDragAction suggested_action = 0;
7746   GdkAtom target;
7747
7748   tree_view = GTK_TREE_VIEW (widget);
7749
7750   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7751     return FALSE;
7752
7753   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7754
7755   /* we only know this *after* set_desination_row */
7756   empty = tree_view->priv->empty_view_drop;
7757
7758   if (path == NULL && !empty)
7759     {
7760       /* Can't drop here. */
7761       gdk_drag_status (context, 0, time);
7762     }
7763   else
7764     {
7765       if (tree_view->priv->open_dest_timeout == 0 &&
7766           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7767            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7768         {
7769           tree_view->priv->open_dest_timeout =
7770             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7771         }
7772       else
7773         {
7774           add_scroll_timeout (tree_view);
7775         }
7776
7777       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7778         {
7779           /* Request data so we can use the source row when
7780            * determining whether to accept the drop
7781            */
7782           set_status_pending (context, suggested_action);
7783           gtk_drag_get_data (widget, context, target, time);
7784         }
7785       else
7786         {
7787           set_status_pending (context, 0);
7788           gdk_drag_status (context, suggested_action, time);
7789         }
7790     }
7791
7792   if (path)
7793     gtk_tree_path_free (path);
7794
7795   return TRUE;
7796 }
7797
7798
7799 static gboolean
7800 gtk_tree_view_drag_drop (GtkWidget        *widget,
7801                          GdkDragContext   *context,
7802                          /* coordinates relative to the widget */
7803                          gint              x,
7804                          gint              y,
7805                          guint             time)
7806 {
7807   GtkTreeView *tree_view;
7808   GtkTreePath *path;
7809   GdkDragAction suggested_action = 0;
7810   GdkAtom target = GDK_NONE;
7811   TreeViewDragInfo *di;
7812   GtkTreeModel *model;
7813   gboolean path_down_mode;
7814   gboolean drop_append_mode;
7815
7816   tree_view = GTK_TREE_VIEW (widget);
7817
7818   model = gtk_tree_view_get_model (tree_view);
7819
7820   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7821   remove_open_timeout (GTK_TREE_VIEW (widget));
7822
7823   di = get_info (tree_view);
7824
7825   if (di == NULL)
7826     return FALSE;
7827
7828   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7829     return FALSE;
7830
7831   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7832     return FALSE;
7833
7834   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7835
7836   if (target != GDK_NONE && path != NULL)
7837     {
7838       /* in case a motion had requested drag data, change things so we
7839        * treat drag data receives as a drop.
7840        */
7841       set_status_pending (context, 0);
7842       set_dest_row (context, model, path,
7843                     path_down_mode, tree_view->priv->empty_view_drop,
7844                     drop_append_mode);
7845     }
7846
7847   if (path)
7848     gtk_tree_path_free (path);
7849
7850   /* Unset this thing */
7851   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7852                                    NULL,
7853                                    GTK_TREE_VIEW_DROP_BEFORE);
7854
7855   if (target != GDK_NONE)
7856     {
7857       gtk_drag_get_data (widget, context, target, time);
7858       return TRUE;
7859     }
7860   else
7861     return FALSE;
7862 }
7863
7864 static void
7865 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7866                                   GdkDragContext   *context,
7867                                   /* coordinates relative to the widget */
7868                                   gint              x,
7869                                   gint              y,
7870                                   GtkSelectionData *selection_data,
7871                                   guint             info,
7872                                   guint             time)
7873 {
7874   GtkTreePath *path;
7875   TreeViewDragInfo *di;
7876   gboolean accepted = FALSE;
7877   GtkTreeModel *model;
7878   GtkTreeView *tree_view;
7879   GtkTreePath *dest_row;
7880   GdkDragAction suggested_action;
7881   gboolean path_down_mode;
7882   gboolean drop_append_mode;
7883
7884   tree_view = GTK_TREE_VIEW (widget);
7885
7886   model = gtk_tree_view_get_model (tree_view);
7887
7888   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7889     return;
7890
7891   di = get_info (tree_view);
7892
7893   if (di == NULL)
7894     return;
7895
7896   suggested_action = get_status_pending (context);
7897
7898   if (suggested_action)
7899     {
7900       /* We are getting this data due to a request in drag_motion,
7901        * rather than due to a request in drag_drop, so we are just
7902        * supposed to call drag_status, not actually paste in the
7903        * data.
7904        */
7905       path = get_logical_dest_row (tree_view, &path_down_mode,
7906                                    &drop_append_mode);
7907
7908       if (path == NULL)
7909         suggested_action = 0;
7910       else if (path_down_mode)
7911         gtk_tree_path_down (path);
7912
7913       if (suggested_action)
7914         {
7915           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7916                                                      path,
7917                                                      selection_data))
7918             {
7919               if (path_down_mode)
7920                 {
7921                   path_down_mode = FALSE;
7922                   gtk_tree_path_up (path);
7923
7924                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7925                                                              path,
7926                                                              selection_data))
7927                     suggested_action = 0;
7928                 }
7929               else
7930                 suggested_action = 0;
7931             }
7932         }
7933
7934       gdk_drag_status (context, suggested_action, time);
7935
7936       if (path)
7937         gtk_tree_path_free (path);
7938
7939       /* If you can't drop, remove user drop indicator until the next motion */
7940       if (suggested_action == 0)
7941         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7942                                          NULL,
7943                                          GTK_TREE_VIEW_DROP_BEFORE);
7944
7945       return;
7946     }
7947
7948   dest_row = get_dest_row (context, &path_down_mode);
7949
7950   if (dest_row == NULL)
7951     return;
7952
7953   if (gtk_selection_data_get_length (selection_data) >= 0)
7954     {
7955       if (path_down_mode)
7956         {
7957           gtk_tree_path_down (dest_row);
7958           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7959                                                      dest_row, selection_data))
7960             gtk_tree_path_up (dest_row);
7961         }
7962     }
7963
7964   if (gtk_selection_data_get_length (selection_data) >= 0)
7965     {
7966       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7967                                                  dest_row,
7968                                                  selection_data))
7969         accepted = TRUE;
7970     }
7971
7972   gtk_drag_finish (context,
7973                    accepted,
7974                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7975                    time);
7976
7977   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7978       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7979       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7980     {
7981       /* special special case drag to "0", scroll to first item */
7982       if (!tree_view->priv->scroll_to_path)
7983         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7984     }
7985
7986   gtk_tree_path_free (dest_row);
7987
7988   /* drop dest_row */
7989   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7990 }
7991
7992
7993
7994 /* GtkContainer Methods
7995  */
7996
7997
7998 static void
7999 gtk_tree_view_remove (GtkContainer *container,
8000                       GtkWidget    *widget)
8001 {
8002   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8003   GtkTreeViewChild *child = NULL;
8004   GList *tmp_list;
8005
8006   tmp_list = tree_view->priv->children;
8007   while (tmp_list)
8008     {
8009       child = tmp_list->data;
8010       if (child->widget == widget)
8011         {
8012           gtk_widget_unparent (widget);
8013
8014           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8015           g_list_free_1 (tmp_list);
8016           g_slice_free (GtkTreeViewChild, child);
8017           return;
8018         }
8019
8020       tmp_list = tmp_list->next;
8021     }
8022
8023   tmp_list = tree_view->priv->columns;
8024
8025   while (tmp_list)
8026     {
8027       GtkTreeViewColumn *column;
8028       GtkWidget         *button;
8029
8030       column = tmp_list->data;
8031       button = gtk_tree_view_column_get_button (column);
8032
8033       if (button == widget)
8034         {
8035           gtk_widget_unparent (widget);
8036           return;
8037         }
8038       tmp_list = tmp_list->next;
8039     }
8040 }
8041
8042 static void
8043 gtk_tree_view_forall (GtkContainer *container,
8044                       gboolean      include_internals,
8045                       GtkCallback   callback,
8046                       gpointer      callback_data)
8047 {
8048   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8049   GtkTreeViewChild *child = NULL;
8050   GtkTreeViewColumn *column;
8051   GtkWidget *button;
8052   GList *tmp_list;
8053
8054   tmp_list = tree_view->priv->children;
8055   while (tmp_list)
8056     {
8057       child = tmp_list->data;
8058       tmp_list = tmp_list->next;
8059
8060       (* callback) (child->widget, callback_data);
8061     }
8062   if (include_internals == FALSE)
8063     return;
8064
8065   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8066     {
8067       column = tmp_list->data;
8068       button = gtk_tree_view_column_get_button (column);
8069
8070       if (button)
8071         (* callback) (button, callback_data);
8072     }
8073 }
8074
8075 /* Returns TRUE is any of the columns contains a cell that can-focus.
8076  * If this is not the case, a column-spanning focus rectangle will be
8077  * drawn.
8078  */
8079 static gboolean
8080 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8081 {
8082   GList *list;
8083
8084   for (list = tree_view->priv->columns; list; list = list->next)
8085     {
8086       GtkTreeViewColumn *column = list->data;
8087
8088       if (!gtk_tree_view_column_get_visible (column))
8089         continue;
8090       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8091         return TRUE;
8092     }
8093
8094   return FALSE;
8095 }
8096
8097 static void
8098 column_sizing_notify (GObject    *object,
8099                       GParamSpec *pspec,
8100                       gpointer    data)
8101 {
8102   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8103
8104   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8105     /* disable fixed height mode */
8106     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8107 }
8108
8109 /**
8110  * gtk_tree_view_set_fixed_height_mode:
8111  * @tree_view: a #GtkTreeView
8112  * @enable: %TRUE to enable fixed height mode
8113  *
8114  * Enables or disables the fixed height mode of @tree_view.
8115  * Fixed height mode speeds up #GtkTreeView by assuming that all
8116  * rows have the same height.
8117  * Only enable this option if all rows are the same height and all
8118  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8119  *
8120  * Since: 2.6
8121  **/
8122 void
8123 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8124                                      gboolean     enable)
8125 {
8126   GList *l;
8127
8128   enable = enable != FALSE;
8129
8130   if (enable == tree_view->priv->fixed_height_mode)
8131     return;
8132
8133   if (!enable)
8134     {
8135       tree_view->priv->fixed_height_mode = 0;
8136       tree_view->priv->fixed_height = -1;
8137
8138       /* force a revalidation */
8139       install_presize_handler (tree_view);
8140     }
8141   else
8142     {
8143       /* make sure all columns are of type FIXED */
8144       for (l = tree_view->priv->columns; l; l = l->next)
8145         {
8146           GtkTreeViewColumn *c = l->data;
8147
8148           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8149         }
8150
8151       /* yes, we really have to do this is in a separate loop */
8152       for (l = tree_view->priv->columns; l; l = l->next)
8153         g_signal_connect (l->data, "notify::sizing",
8154                           G_CALLBACK (column_sizing_notify), tree_view);
8155
8156       tree_view->priv->fixed_height_mode = 1;
8157       tree_view->priv->fixed_height = -1;
8158
8159       if (tree_view->priv->tree)
8160         initialize_fixed_height_mode (tree_view);
8161     }
8162
8163   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8164 }
8165
8166 /**
8167  * gtk_tree_view_get_fixed_height_mode:
8168  * @tree_view: a #GtkTreeView
8169  *
8170  * Returns whether fixed height mode is turned on for @tree_view.
8171  *
8172  * Return value: %TRUE if @tree_view is in fixed height mode
8173  *
8174  * Since: 2.6
8175  **/
8176 gboolean
8177 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8178 {
8179   return tree_view->priv->fixed_height_mode;
8180 }
8181
8182 /* Returns TRUE if the focus is within the headers, after the focus operation is
8183  * done
8184  */
8185 static gboolean
8186 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8187                             GtkDirectionType  dir,
8188                             gboolean          clamp_column_visible)
8189 {
8190   GtkTreeViewColumn *column;
8191   GtkWidget *focus_child;
8192   GtkWidget *button;
8193   GList *last_column, *first_column;
8194   GList *tmp_list;
8195   gboolean rtl;
8196
8197   if (! tree_view->priv->headers_visible)
8198     return FALSE;
8199
8200   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8201
8202   first_column = tree_view->priv->columns;
8203   while (first_column)
8204     {
8205       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8206       button = gtk_tree_view_column_get_button (column);
8207
8208       if (gtk_widget_get_can_focus (button) &&
8209           gtk_tree_view_column_get_visible (column) &&
8210           (gtk_tree_view_column_get_clickable (column) ||
8211            gtk_tree_view_column_get_reorderable (column)))
8212         break;
8213       first_column = first_column->next;
8214     }
8215
8216   /* No headers are visible, or are focusable.  We can't focus in or out.
8217    */
8218   if (first_column == NULL)
8219     return FALSE;
8220
8221   last_column = g_list_last (tree_view->priv->columns);
8222   while (last_column)
8223     {
8224       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8225       button = gtk_tree_view_column_get_button (column);
8226
8227       if (gtk_widget_get_can_focus (button) &&
8228           gtk_tree_view_column_get_visible (column) &&
8229           (gtk_tree_view_column_get_clickable (column) ||
8230            gtk_tree_view_column_get_reorderable (column)))
8231         break;
8232       last_column = last_column->prev;
8233     }
8234
8235
8236   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8237
8238   switch (dir)
8239     {
8240     case GTK_DIR_TAB_BACKWARD:
8241     case GTK_DIR_TAB_FORWARD:
8242     case GTK_DIR_UP:
8243     case GTK_DIR_DOWN:
8244       if (focus_child == NULL)
8245         {
8246           if (tree_view->priv->focus_column != NULL)
8247             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8248           else
8249             button = NULL;
8250
8251           if (button && gtk_widget_get_can_focus (button))
8252             focus_child = button;
8253           else
8254             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8255
8256           gtk_widget_grab_focus (focus_child);
8257           break;
8258         }
8259       return FALSE;
8260
8261     case GTK_DIR_LEFT:
8262     case GTK_DIR_RIGHT:
8263       if (focus_child == NULL)
8264         {
8265           if (tree_view->priv->focus_column != NULL)
8266             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8267           else if (dir == GTK_DIR_LEFT)
8268             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8269           else
8270             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8271
8272           gtk_widget_grab_focus (focus_child);
8273           break;
8274         }
8275
8276       if (gtk_widget_child_focus (focus_child, dir))
8277         {
8278           /* The focus moves inside the button. */
8279           /* This is probably a great example of bad UI */
8280           break;
8281         }
8282
8283       /* We need to move the focus among the row of buttons. */
8284       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8285         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8286           break;
8287
8288       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8289           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8290         {
8291           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8292           break;
8293         }
8294
8295       while (tmp_list)
8296         {
8297           GtkTreeViewColumn *column;
8298           GtkWidget         *button;
8299
8300           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8301             tmp_list = tmp_list->next;
8302           else
8303             tmp_list = tmp_list->prev;
8304
8305           if (tmp_list == NULL)
8306             {
8307               g_warning ("Internal button not found");
8308               break;
8309             }
8310           column = tmp_list->data;
8311           button = gtk_tree_view_column_get_button (column);
8312           if (button &&
8313               gtk_tree_view_column_get_visible (column) &&
8314               gtk_widget_get_can_focus (button))
8315             {
8316               focus_child = button;
8317               gtk_widget_grab_focus (button);
8318               break;
8319             }
8320         }
8321       break;
8322     default:
8323       g_assert_not_reached ();
8324       break;
8325     }
8326
8327   /* if focus child is non-null, we assume it's been set to the current focus child
8328    */
8329   if (focus_child)
8330     {
8331       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8332         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8333           {
8334             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8335             break;
8336           }
8337
8338       if (clamp_column_visible)
8339         {
8340           gtk_tree_view_clamp_column_visible (tree_view,
8341                                               tree_view->priv->focus_column,
8342                                               FALSE);
8343         }
8344     }
8345
8346   return (focus_child != NULL);
8347 }
8348
8349 /* This function returns in 'path' the first focusable path, if the given path
8350  * is already focusable, it's the returned one.
8351  */
8352 static gboolean
8353 search_first_focusable_path (GtkTreeView  *tree_view,
8354                              GtkTreePath **path,
8355                              gboolean      search_forward,
8356                              GtkRBTree   **new_tree,
8357                              GtkRBNode   **new_node)
8358 {
8359   GtkRBTree *tree = NULL;
8360   GtkRBNode *node = NULL;
8361
8362   if (!path || !*path)
8363     return FALSE;
8364
8365   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8366
8367   if (!tree || !node)
8368     return FALSE;
8369
8370   while (node && row_is_separator (tree_view, NULL, *path))
8371     {
8372       if (search_forward)
8373         _gtk_rbtree_next_full (tree, node, &tree, &node);
8374       else
8375         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8376
8377       if (*path)
8378         gtk_tree_path_free (*path);
8379
8380       if (node)
8381         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8382       else
8383         *path = NULL;
8384     }
8385
8386   if (new_tree)
8387     *new_tree = tree;
8388
8389   if (new_node)
8390     *new_node = node;
8391
8392   return (*path != NULL);
8393 }
8394
8395 static gint
8396 gtk_tree_view_focus (GtkWidget        *widget,
8397                      GtkDirectionType  direction)
8398 {
8399   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8400   GtkContainer *container = GTK_CONTAINER (widget);
8401   GtkWidget *focus_child;
8402
8403   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8404     return FALSE;
8405
8406   focus_child = gtk_container_get_focus_child (container);
8407
8408   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8409   /* Case 1.  Headers currently have focus. */
8410   if (focus_child)
8411     {
8412       switch (direction)
8413         {
8414         case GTK_DIR_LEFT:
8415         case GTK_DIR_RIGHT:
8416           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8417           return TRUE;
8418         case GTK_DIR_TAB_BACKWARD:
8419         case GTK_DIR_UP:
8420           return FALSE;
8421         case GTK_DIR_TAB_FORWARD:
8422         case GTK_DIR_DOWN:
8423           gtk_widget_grab_focus (widget);
8424           return TRUE;
8425         default:
8426           g_assert_not_reached ();
8427           return FALSE;
8428         }
8429     }
8430
8431   /* Case 2. We don't have focus at all. */
8432   if (!gtk_widget_has_focus (widget))
8433     {
8434       gtk_widget_grab_focus (widget);
8435       return TRUE;
8436     }
8437
8438   /* Case 3. We have focus already. */
8439   if (direction == GTK_DIR_TAB_BACKWARD)
8440     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8441   else if (direction == GTK_DIR_TAB_FORWARD)
8442     return FALSE;
8443
8444   /* Other directions caught by the keybindings */
8445   gtk_widget_grab_focus (widget);
8446   return TRUE;
8447 }
8448
8449 static void
8450 gtk_tree_view_grab_focus (GtkWidget *widget)
8451 {
8452   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8453
8454   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8455 }
8456
8457 static void
8458 gtk_tree_view_style_updated (GtkWidget *widget)
8459 {
8460   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8461   GList *list;
8462   GtkTreeViewColumn *column;
8463
8464   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8465
8466   if (gtk_widget_get_realized (widget))
8467     {
8468       gtk_tree_view_ensure_background (tree_view);
8469
8470       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8471       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8472     }
8473
8474   gtk_widget_style_get (widget,
8475                         "expander-size", &tree_view->priv->expander_size,
8476                         NULL);
8477   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8478
8479   for (list = tree_view->priv->columns; list; list = list->next)
8480     {
8481       column = list->data;
8482       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8483     }
8484
8485   tree_view->priv->fixed_height = -1;
8486   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8487
8488   gtk_widget_queue_resize (widget);
8489 }
8490
8491
8492 static void
8493 gtk_tree_view_set_focus_child (GtkContainer *container,
8494                                GtkWidget    *child)
8495 {
8496   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8497   GList *list;
8498
8499   for (list = tree_view->priv->columns; list; list = list->next)
8500     {
8501       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8502         {
8503           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8504           break;
8505         }
8506     }
8507
8508   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8509 }
8510
8511 static GtkWidgetPath *
8512 gtk_tree_view_get_path_for_child (GtkContainer *container,
8513                                   GtkWidget    *child)
8514 {
8515   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8516   GtkWidgetPath *path;
8517   gboolean rtl;
8518   GList *list;
8519   gint n_col = 0;
8520
8521   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8522   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8523
8524   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8525        list;
8526        list = (rtl ? list->prev : list->next))
8527     {
8528       GtkTreeViewColumn *column = list->data;
8529       GtkRegionFlags flags = 0;
8530
8531       if (!gtk_tree_view_column_get_visible (column))
8532         continue;
8533
8534       n_col++;
8535
8536       if (gtk_tree_view_column_get_widget (column) != child &&
8537           gtk_tree_view_column_get_button (column) != child)
8538         continue;
8539
8540       if ((n_col % 2) == 0)
8541         flags |= GTK_REGION_EVEN;
8542       else
8543         flags |= GTK_REGION_ODD;
8544
8545       if (n_col == 1)
8546         flags |= GTK_REGION_FIRST;
8547
8548       if ((rtl && !list->prev) ||
8549           (!rtl && !list->next))
8550         flags |= GTK_REGION_LAST;
8551
8552       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8553       break;
8554     }
8555
8556   gtk_widget_path_append_for_widget (path, child);
8557
8558   return path;
8559 }
8560
8561 static gboolean
8562 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8563                                 GtkMovementStep    step,
8564                                 gint               count)
8565 {
8566   GdkModifierType state;
8567
8568   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8569   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8570                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8571                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8572                         step == GTK_MOVEMENT_PAGES ||
8573                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8574
8575   if (tree_view->priv->tree == NULL)
8576     return FALSE;
8577   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8578     return FALSE;
8579
8580   gtk_tree_view_stop_editing (tree_view, FALSE);
8581   tree_view->priv->draw_keyfocus = TRUE;
8582   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8583
8584   if (gtk_get_current_event_state (&state))
8585     {
8586       GdkModifierType extend_mod_mask;
8587       GdkModifierType modify_mod_mask;
8588
8589       extend_mod_mask =
8590         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8591                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8592
8593       modify_mod_mask =
8594         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8595                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8596
8597       if ((state & modify_mod_mask) == modify_mod_mask)
8598         tree_view->priv->modify_selection_pressed = TRUE;
8599       if ((state & extend_mod_mask) == extend_mod_mask)
8600         tree_view->priv->extend_selection_pressed = TRUE;
8601     }
8602   /* else we assume not pressed */
8603
8604   switch (step)
8605     {
8606       /* currently we make no distinction.  When we go bi-di, we need to */
8607     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8608     case GTK_MOVEMENT_VISUAL_POSITIONS:
8609       gtk_tree_view_move_cursor_left_right (tree_view, count);
8610       break;
8611     case GTK_MOVEMENT_DISPLAY_LINES:
8612       gtk_tree_view_move_cursor_up_down (tree_view, count);
8613       break;
8614     case GTK_MOVEMENT_PAGES:
8615       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8616       break;
8617     case GTK_MOVEMENT_BUFFER_ENDS:
8618       gtk_tree_view_move_cursor_start_end (tree_view, count);
8619       break;
8620     default:
8621       g_assert_not_reached ();
8622     }
8623
8624   tree_view->priv->modify_selection_pressed = FALSE;
8625   tree_view->priv->extend_selection_pressed = FALSE;
8626
8627   return TRUE;
8628 }
8629
8630 static void
8631 gtk_tree_view_put (GtkTreeView *tree_view,
8632                    GtkWidget   *child_widget,
8633                    /* in bin_window coordinates */
8634                    gint         x,
8635                    gint         y,
8636                    gint         width,
8637                    gint         height)
8638 {
8639   GtkTreeViewChild *child;
8640
8641   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8642   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8643
8644   child = g_slice_new (GtkTreeViewChild);
8645
8646   child->widget = child_widget;
8647   child->x = x;
8648   child->y = y;
8649   child->width = width;
8650   child->height = height;
8651
8652   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8653
8654   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8655     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8656
8657   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8658 }
8659
8660 void
8661 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8662                                   GtkWidget   *widget,
8663                                   /* in tree coordinates */
8664                                   gint         x,
8665                                   gint         y,
8666                                   gint         width,
8667                                   gint         height)
8668 {
8669   GtkTreeViewChild *child = NULL;
8670   GList *list;
8671   GdkRectangle allocation;
8672
8673   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8674   g_return_if_fail (GTK_IS_WIDGET (widget));
8675
8676   for (list = tree_view->priv->children; list; list = list->next)
8677     {
8678       if (((GtkTreeViewChild *)list->data)->widget == widget)
8679         {
8680           child = list->data;
8681           break;
8682         }
8683     }
8684   if (child == NULL)
8685     return;
8686
8687   allocation.x = child->x = x;
8688   allocation.y = child->y = y;
8689   allocation.width = child->width = width;
8690   allocation.height = child->height = height;
8691
8692   if (gtk_widget_get_realized (widget))
8693     gtk_widget_size_allocate (widget, &allocation);
8694 }
8695
8696
8697 /* TreeModel Callbacks
8698  */
8699
8700 static void
8701 gtk_tree_view_row_changed (GtkTreeModel *model,
8702                            GtkTreePath  *path,
8703                            GtkTreeIter  *iter,
8704                            gpointer      data)
8705 {
8706   GtkTreeView *tree_view = (GtkTreeView *)data;
8707   GtkRBTree *tree;
8708   GtkRBNode *node;
8709   gboolean free_path = FALSE;
8710   GList *list;
8711   GtkTreePath *cursor_path;
8712
8713   g_return_if_fail (path != NULL || iter != NULL);
8714
8715   if (tree_view->priv->cursor != NULL)
8716     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8717   else
8718     cursor_path = NULL;
8719
8720   if (tree_view->priv->edited_column &&
8721       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8722     gtk_tree_view_stop_editing (tree_view, TRUE);
8723
8724   if (cursor_path != NULL)
8725     gtk_tree_path_free (cursor_path);
8726
8727   if (path == NULL)
8728     {
8729       path = gtk_tree_model_get_path (model, iter);
8730       free_path = TRUE;
8731     }
8732   else if (iter == NULL)
8733     gtk_tree_model_get_iter (model, iter, path);
8734
8735   if (_gtk_tree_view_find_node (tree_view,
8736                                 path,
8737                                 &tree,
8738                                 &node))
8739     /* We aren't actually showing the node */
8740     goto done;
8741
8742   if (tree == NULL)
8743     goto done;
8744
8745   if (tree_view->priv->fixed_height_mode
8746       && tree_view->priv->fixed_height >= 0)
8747     {
8748       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8749       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8750         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8751     }
8752   else
8753     {
8754       _gtk_rbtree_node_mark_invalid (tree, node);
8755       for (list = tree_view->priv->columns; list; list = list->next)
8756         {
8757           GtkTreeViewColumn *column;
8758
8759           column = list->data;
8760           if (!gtk_tree_view_column_get_visible (column))
8761             continue;
8762
8763           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8764             {
8765               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8766             }
8767         }
8768     }
8769
8770  done:
8771   if (!tree_view->priv->fixed_height_mode &&
8772       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8773     install_presize_handler (tree_view);
8774   if (free_path)
8775     gtk_tree_path_free (path);
8776 }
8777
8778 static void
8779 gtk_tree_view_row_inserted (GtkTreeModel *model,
8780                             GtkTreePath  *path,
8781                             GtkTreeIter  *iter,
8782                             gpointer      data)
8783 {
8784   GtkTreeView *tree_view = (GtkTreeView *) data;
8785   gint *indices;
8786   GtkRBTree *tree;
8787   GtkRBNode *tmpnode = NULL;
8788   gint depth;
8789   gint i = 0;
8790   gint height;
8791   gboolean free_path = FALSE;
8792   gboolean node_visible = TRUE;
8793
8794   g_return_if_fail (path != NULL || iter != NULL);
8795
8796   if (tree_view->priv->fixed_height_mode
8797       && tree_view->priv->fixed_height >= 0)
8798     height = tree_view->priv->fixed_height;
8799   else
8800     height = 0;
8801
8802   if (path == NULL)
8803     {
8804       path = gtk_tree_model_get_path (model, iter);
8805       free_path = TRUE;
8806     }
8807   else if (iter == NULL)
8808     gtk_tree_model_get_iter (model, iter, path);
8809
8810   if (tree_view->priv->tree == NULL)
8811     tree_view->priv->tree = _gtk_rbtree_new ();
8812
8813   tree = tree_view->priv->tree;
8814
8815   /* Update all row-references */
8816   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8817   depth = gtk_tree_path_get_depth (path);
8818   indices = gtk_tree_path_get_indices (path);
8819
8820   /* First, find the parent tree */
8821   while (i < depth - 1)
8822     {
8823       if (tree == NULL)
8824         {
8825           /* We aren't showing the node */
8826           node_visible = FALSE;
8827           goto done;
8828         }
8829
8830       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8831       if (tmpnode == NULL)
8832         {
8833           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8834                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8835                      "before the parent was inserted.");
8836           goto done;
8837         }
8838       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8839         {
8840           /* FIXME enforce correct behavior on model, probably */
8841           /* In theory, the model should have emitted has_child_toggled here.  We
8842            * try to catch it anyway, just to be safe, in case the model hasn't.
8843            */
8844           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8845           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8846           gtk_tree_path_free (tmppath);
8847           goto done;
8848         }
8849
8850       tree = tmpnode->children;
8851       i++;
8852     }
8853
8854   if (tree == NULL)
8855     {
8856       node_visible = FALSE;
8857       goto done;
8858     }
8859
8860   /* ref the node */
8861   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8862   if (indices[depth - 1] == 0)
8863     {
8864       tmpnode = _gtk_rbtree_find_count (tree, 1);
8865       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8866     }
8867   else
8868     {
8869       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8870       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8871     }
8872
8873  done:
8874   if (height > 0)
8875     {
8876       if (tree)
8877         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8878
8879       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8880         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8881       else
8882         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8883     }
8884   else
8885     install_presize_handler (tree_view);
8886   if (free_path)
8887     gtk_tree_path_free (path);
8888 }
8889
8890 static void
8891 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8892                                      GtkTreePath  *path,
8893                                      GtkTreeIter  *iter,
8894                                      gpointer      data)
8895 {
8896   GtkTreeView *tree_view = (GtkTreeView *)data;
8897   GtkTreeIter real_iter;
8898   gboolean has_child;
8899   GtkRBTree *tree;
8900   GtkRBNode *node;
8901   gboolean free_path = FALSE;
8902
8903   g_return_if_fail (path != NULL || iter != NULL);
8904
8905   if (iter)
8906     real_iter = *iter;
8907
8908   if (path == NULL)
8909     {
8910       path = gtk_tree_model_get_path (model, iter);
8911       free_path = TRUE;
8912     }
8913   else if (iter == NULL)
8914     gtk_tree_model_get_iter (model, &real_iter, path);
8915
8916   if (_gtk_tree_view_find_node (tree_view,
8917                                 path,
8918                                 &tree,
8919                                 &node))
8920     /* We aren't actually showing the node */
8921     goto done;
8922
8923   if (tree == NULL)
8924     goto done;
8925
8926   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8927   /* Sanity check.
8928    */
8929   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8930     goto done;
8931
8932   if (has_child)
8933     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8934   else
8935     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8936
8937   if (has_child && tree_view->priv->is_list)
8938     {
8939       tree_view->priv->is_list = FALSE;
8940       if (tree_view->priv->show_expanders)
8941         {
8942           GList *list;
8943
8944           for (list = tree_view->priv->columns; list; list = list->next)
8945             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8946               {
8947                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8948                 break;
8949               }
8950         }
8951       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8952     }
8953   else
8954     {
8955       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8956     }
8957
8958  done:
8959   if (free_path)
8960     gtk_tree_path_free (path);
8961 }
8962
8963 static void
8964 count_children_helper (GtkRBTree *tree,
8965                        GtkRBNode *node,
8966                        gpointer   data)
8967 {
8968   if (node->children)
8969     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8970   (*((gint *)data))++;
8971 }
8972
8973 static void
8974 check_selection_helper (GtkRBTree *tree,
8975                         GtkRBNode *node,
8976                         gpointer   data)
8977 {
8978   gint *value = (gint *)data;
8979
8980   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8981
8982   if (node->children && !*value)
8983     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8984 }
8985
8986 static void
8987 gtk_tree_view_row_deleted (GtkTreeModel *model,
8988                            GtkTreePath  *path,
8989                            gpointer      data)
8990 {
8991   GtkTreeView *tree_view = (GtkTreeView *)data;
8992   GtkRBTree *tree;
8993   GtkRBNode *node;
8994   GList *list;
8995   gint selection_changed = FALSE;
8996   GtkStyleContext *context;
8997
8998   g_return_if_fail (path != NULL);
8999
9000   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9001
9002   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9003     return;
9004
9005   if (tree == NULL)
9006     return;
9007
9008   /* check if the selection has been changed */
9009   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9010                         check_selection_helper, &selection_changed);
9011
9012   for (list = tree_view->priv->columns; list; list = list->next)
9013     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9014         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9015       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9016
9017   /* Ensure we don't have a dangling pointer to a dead node */
9018   ensure_unprelighted (tree_view);
9019
9020   /* Cancel editting if we've started */
9021   gtk_tree_view_stop_editing (tree_view, TRUE);
9022
9023   if (tree_view->priv->destroy_count_func)
9024     {
9025       gint child_count = 0;
9026       if (node->children)
9027         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9028       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9029     }
9030
9031   if (tree->root->count == 1)
9032     {
9033       if (tree_view->priv->tree == tree)
9034         tree_view->priv->tree = NULL;
9035
9036       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9037       _gtk_rbtree_remove (tree);
9038     }
9039   else
9040     {
9041       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9042       _gtk_rbtree_remove_node (tree, node);
9043     }
9044
9045   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9046     {
9047       gtk_tree_row_reference_free (tree_view->priv->top_row);
9048       tree_view->priv->top_row = NULL;
9049     }
9050
9051   /* Cancel any ongoing animation happening within the row */
9052   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9053   gtk_style_context_cancel_animations (context, node);
9054
9055   install_scroll_sync_handler (tree_view);
9056
9057   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9058
9059   if (selection_changed)
9060     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9061 }
9062
9063 static void
9064 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9065                               GtkTreePath  *parent,
9066                               GtkTreeIter  *iter,
9067                               gint         *new_order,
9068                               gpointer      data)
9069 {
9070   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9071   GtkRBTree *tree;
9072   GtkRBNode *node;
9073   gint len;
9074
9075   len = gtk_tree_model_iter_n_children (model, iter);
9076
9077   if (len < 2)
9078     return;
9079
9080   gtk_tree_row_reference_reordered (G_OBJECT (data),
9081                                     parent,
9082                                     iter,
9083                                     new_order);
9084
9085   if (_gtk_tree_view_find_node (tree_view,
9086                                 parent,
9087                                 &tree,
9088                                 &node))
9089     return;
9090
9091   /* We need to special case the parent path */
9092   if (tree == NULL)
9093     tree = tree_view->priv->tree;
9094   else
9095     tree = node->children;
9096
9097   if (tree == NULL)
9098     return;
9099
9100   if (tree_view->priv->edited_column)
9101     gtk_tree_view_stop_editing (tree_view, TRUE);
9102
9103   /* we need to be unprelighted */
9104   ensure_unprelighted (tree_view);
9105
9106   _gtk_rbtree_reorder (tree, new_order, len);
9107
9108   _gtk_tree_view_accessible_reorder (tree_view);
9109
9110   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9111
9112   gtk_tree_view_dy_to_top_row (tree_view);
9113 }
9114
9115
9116 /* Internal tree functions
9117  */
9118
9119
9120 static void
9121 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9122                                      GtkRBTree         *tree,
9123                                      GtkTreeViewColumn *column,
9124                                      gint              *x1,
9125                                      gint              *x2)
9126 {
9127   GtkTreeViewColumn *tmp_column = NULL;
9128   gint total_width;
9129   GList *list;
9130   gboolean rtl;
9131
9132   if (x1)
9133     *x1 = 0;
9134
9135   if (x2)
9136     *x2 = 0;
9137
9138   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9139
9140   total_width = 0;
9141   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9142        list;
9143        list = (rtl ? list->prev : list->next))
9144     {
9145       tmp_column = list->data;
9146
9147       if (tmp_column == column)
9148         break;
9149
9150       if (gtk_tree_view_column_get_visible (tmp_column))
9151         total_width += gtk_tree_view_column_get_width (tmp_column);
9152     }
9153
9154   if (tmp_column != column)
9155     {
9156       g_warning (G_STRLOC": passed-in column isn't in the tree");
9157       return;
9158     }
9159
9160   if (x1)
9161     *x1 = total_width;
9162
9163   if (x2)
9164     {
9165       if (gtk_tree_view_column_get_visible (column))
9166         *x2 = total_width + gtk_tree_view_column_get_width (column);
9167       else
9168         *x2 = total_width; /* width of 0 */
9169     }
9170 }
9171
9172 static void
9173 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9174                                 GtkRBTree   *tree,
9175                                 gint        *x1,
9176                                 gint        *x2)
9177 {
9178   gint x_offset = 0;
9179   GList *list;
9180   GtkTreeViewColumn *tmp_column = NULL;
9181   gint total_width;
9182   gboolean indent_expanders;
9183   gboolean rtl;
9184
9185   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9186
9187   total_width = 0;
9188   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9189        list;
9190        list = (rtl ? list->prev : list->next))
9191     {
9192       tmp_column = list->data;
9193
9194       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9195         {
9196           if (rtl)
9197             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9198           else
9199             x_offset = total_width;
9200           break;
9201         }
9202
9203       if (gtk_tree_view_column_get_visible (tmp_column))
9204         total_width += gtk_tree_view_column_get_width (tmp_column);
9205     }
9206
9207   gtk_widget_style_get (GTK_WIDGET (tree_view),
9208                         "indent-expanders", &indent_expanders,
9209                         NULL);
9210
9211   if (indent_expanders)
9212     {
9213       if (rtl)
9214         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9215       else
9216         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9217     }
9218
9219   *x1 = x_offset;
9220
9221   if (tmp_column &&
9222       gtk_tree_view_column_get_visible (tmp_column))
9223     /* +1 because x2 isn't included in the range. */
9224     *x2 = *x1 + tree_view->priv->expander_size + 1;
9225   else
9226     *x2 = *x1;
9227 }
9228
9229 static void
9230 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9231                           GtkRBTree   *tree,
9232                           GtkTreeIter *iter,
9233                           gint         depth,
9234                           gboolean     recurse)
9235 {
9236   GtkRBNode *temp = NULL;
9237   GtkTreePath *path = NULL;
9238
9239   do
9240     {
9241       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9242       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9243
9244       if (tree_view->priv->fixed_height > 0)
9245         {
9246           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9247             {
9248               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9249               _gtk_rbtree_node_mark_valid (tree, temp);
9250             }
9251         }
9252
9253       if (tree_view->priv->is_list)
9254         continue;
9255
9256       if (recurse)
9257         {
9258           GtkTreeIter child;
9259
9260           if (!path)
9261             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9262           else
9263             gtk_tree_path_next (path);
9264
9265           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9266             {
9267               gboolean expand;
9268
9269               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9270
9271               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9272                   && !expand)
9273                 {
9274                   temp->children = _gtk_rbtree_new ();
9275                   temp->children->parent_tree = tree;
9276                   temp->children->parent_node = temp;
9277                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9278                 }
9279             }
9280         }
9281
9282       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9283         {
9284           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9285             temp->flags ^= GTK_RBNODE_IS_PARENT;
9286         }
9287     }
9288   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9289
9290   if (path)
9291     gtk_tree_path_free (path);
9292 }
9293
9294 /* Make sure the node is visible vertically */
9295 static void
9296 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9297                                   GtkRBTree   *tree,
9298                                   GtkRBNode   *node)
9299 {
9300   gint node_dy, height;
9301   GtkTreePath *path = NULL;
9302
9303   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9304     return;
9305
9306   /* just return if the node is visible, avoiding a costly expose */
9307   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9308   height = gtk_tree_view_get_row_height (tree_view, node);
9309   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9310       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9311       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9312                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9313     return;
9314
9315   path = _gtk_tree_path_new_from_rbtree (tree, node);
9316   if (path)
9317     {
9318       /* We process updates because we want to clear old selected items when we scroll.
9319        * if this is removed, we get a "selection streak" at the bottom. */
9320       gtk_tree_view_bin_process_updates (tree_view);
9321
9322       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9323       gtk_tree_path_free (path);
9324     }
9325 }
9326
9327 static void
9328 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9329                                     GtkTreeViewColumn *column,
9330                                     gboolean           focus_to_cell)
9331 {
9332   GtkAllocation allocation;
9333   gint x, width;
9334
9335   if (column == NULL)
9336     return;
9337
9338   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9339   x = allocation.x;
9340   width = allocation.width;
9341
9342   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9343     {
9344       /* The column is larger than the horizontal page size.  If the
9345        * column has cells which can be focussed individually, then we make
9346        * sure the cell which gets focus is fully visible (if even the
9347        * focus cell is bigger than the page size, we make sure the
9348        * left-hand side of the cell is visible).
9349        *
9350        * If the column does not have an activatable cell, we
9351        * make sure the left-hand side of the column is visible.
9352        */
9353
9354       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9355         {
9356           GtkCellArea *cell_area;
9357           GtkCellRenderer *focus_cell;
9358
9359           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9360           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9361
9362           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9363                                                       &x, &width))
9364             {
9365               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9366                 {
9367                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9368                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9369                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9370                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9371                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9372                 }
9373             }
9374         }
9375
9376       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9377     }
9378   else
9379     {
9380       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9381           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9382                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9383       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9384         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9385   }
9386 }
9387
9388 /* This function could be more efficient.  I'll optimize it if profiling seems
9389  * to imply that it is important */
9390 GtkTreePath *
9391 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9392                                 GtkRBNode   *node)
9393 {
9394   GtkTreePath *path;
9395   GtkRBTree *tmp_tree;
9396   GtkRBNode *tmp_node, *last;
9397   gint count;
9398
9399   path = gtk_tree_path_new ();
9400
9401   g_return_val_if_fail (node != NULL, path);
9402
9403   count = 1 + node->left->count;
9404
9405   last = node;
9406   tmp_node = node->parent;
9407   tmp_tree = tree;
9408   while (tmp_tree)
9409     {
9410       while (!_gtk_rbtree_is_nil (tmp_node))
9411         {
9412           if (tmp_node->right == last)
9413             count += 1 + tmp_node->left->count;
9414           last = tmp_node;
9415           tmp_node = tmp_node->parent;
9416         }
9417       gtk_tree_path_prepend_index (path, count - 1);
9418       last = tmp_tree->parent_node;
9419       tmp_tree = tmp_tree->parent_tree;
9420       if (last)
9421         {
9422           count = 1 + last->left->count;
9423           tmp_node = last->parent;
9424         }
9425     }
9426   return path;
9427 }
9428
9429 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9430  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9431  * both set to NULL.
9432  */
9433 gboolean
9434 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9435                           GtkTreePath  *path,
9436                           GtkRBTree   **tree,
9437                           GtkRBNode   **node)
9438 {
9439   GtkRBNode *tmpnode = NULL;
9440   GtkRBTree *tmptree = tree_view->priv->tree;
9441   gint *indices = gtk_tree_path_get_indices (path);
9442   gint depth = gtk_tree_path_get_depth (path);
9443   gint i = 0;
9444
9445   *node = NULL;
9446   *tree = NULL;
9447
9448   if (depth == 0 || tmptree == NULL)
9449     return FALSE;
9450   do
9451     {
9452       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9453       ++i;
9454       if (tmpnode == NULL)
9455         {
9456           *tree = NULL;
9457           *node = NULL;
9458           return FALSE;
9459         }
9460       if (i >= depth)
9461         {
9462           *tree = tmptree;
9463           *node = tmpnode;
9464           return FALSE;
9465         }
9466       *tree = tmptree;
9467       *node = tmpnode;
9468       tmptree = tmpnode->children;
9469       if (tmptree == NULL)
9470         return TRUE;
9471     }
9472   while (1);
9473 }
9474
9475 static gboolean
9476 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9477                                   GtkTreeViewColumn *column)
9478 {
9479   GList *list;
9480
9481   if (tree_view->priv->is_list)
9482     return FALSE;
9483
9484   if (tree_view->priv->expander_column != NULL)
9485     {
9486       if (tree_view->priv->expander_column == column)
9487         return TRUE;
9488       return FALSE;
9489     }
9490   else
9491     {
9492       for (list = tree_view->priv->columns;
9493            list;
9494            list = list->next)
9495         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9496           break;
9497       if (list && list->data == column)
9498         return TRUE;
9499     }
9500   return FALSE;
9501 }
9502
9503 static inline gboolean
9504 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9505 {
9506   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9507     return TRUE;
9508   /* else */
9509   return FALSE;
9510 }
9511
9512 static void
9513 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9514                                 guint           keyval,
9515                                 guint           modmask,
9516                                 gboolean        add_shifted_binding,
9517                                 GtkMovementStep step,
9518                                 gint            count)
9519 {
9520
9521   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9522                                 "move-cursor", 2,
9523                                 G_TYPE_ENUM, step,
9524                                 G_TYPE_INT, count);
9525
9526   if (add_shifted_binding)
9527     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9528                                   "move-cursor", 2,
9529                                   G_TYPE_ENUM, step,
9530                                   G_TYPE_INT, count);
9531
9532   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9533    return;
9534
9535   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9536                                 "move-cursor", 2,
9537                                 G_TYPE_ENUM, step,
9538                                 G_TYPE_INT, count);
9539
9540   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9541                                 "move-cursor", 2,
9542                                 G_TYPE_ENUM, step,
9543                                 G_TYPE_INT, count);
9544 }
9545
9546 static gint
9547 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9548                                  GtkTreeIter  *iter,
9549                                  GtkRBTree    *tree,
9550                                  GtkRBNode    *node)
9551 {
9552   gint retval = FALSE;
9553   do
9554     {
9555       g_return_val_if_fail (node != NULL, FALSE);
9556
9557       if (node->children)
9558         {
9559           GtkTreeIter child;
9560           GtkRBTree *new_tree;
9561           GtkRBNode *new_node;
9562
9563           new_tree = node->children;
9564           new_node = _gtk_rbtree_first (new_tree);
9565
9566           if (!gtk_tree_model_iter_children (model, &child, iter))
9567             return FALSE;
9568
9569           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9570         }
9571
9572       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9573         retval = TRUE;
9574       gtk_tree_model_unref_node (model, iter);
9575       node = _gtk_rbtree_next (tree, node);
9576     }
9577   while (gtk_tree_model_iter_next (model, iter));
9578
9579   return retval;
9580 }
9581
9582 static gint
9583 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9584                                               GtkRBTree   *tree)
9585 {
9586   GtkTreeIter iter;
9587   GtkTreePath *path;
9588   GtkRBNode *node;
9589   gint retval;
9590
9591   if (!tree)
9592     return FALSE;
9593
9594   node = _gtk_rbtree_first (tree);
9595
9596   g_return_val_if_fail (node != NULL, FALSE);
9597   path = _gtk_tree_path_new_from_rbtree (tree, node);
9598   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9599                            &iter, path);
9600   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9601   gtk_tree_path_free (path);
9602
9603   return retval;
9604 }
9605
9606 static void
9607 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9608                                     GtkTreeViewColumn *column)
9609 {
9610   GtkTreeViewColumn *left_column;
9611   GtkTreeViewColumn *cur_column = NULL;
9612   GtkTreeViewColumnReorder *reorder;
9613   gboolean rtl;
9614   GList *tmp_list;
9615   gint left;
9616
9617   /* We want to precalculate the motion list such that we know what column slots
9618    * are available.
9619    */
9620   left_column = NULL;
9621   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9622
9623   /* First, identify all possible drop spots */
9624   if (rtl)
9625     tmp_list = g_list_last (tree_view->priv->columns);
9626   else
9627     tmp_list = g_list_first (tree_view->priv->columns);
9628
9629   while (tmp_list)
9630     {
9631       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9632       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9633
9634       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9635         continue;
9636
9637       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9638       if (left_column != column && cur_column != column &&
9639           tree_view->priv->column_drop_func &&
9640           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9641         {
9642           left_column = cur_column;
9643           continue;
9644         }
9645       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9646       reorder->left_column = left_column;
9647       left_column = reorder->right_column = cur_column;
9648
9649       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9650     }
9651
9652   /* Add the last one */
9653   if (tree_view->priv->column_drop_func == NULL ||
9654       ((left_column != column) &&
9655        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9656     {
9657       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9658       reorder->left_column = left_column;
9659       reorder->right_column = NULL;
9660       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9661     }
9662
9663   /* We quickly check to see if it even makes sense to reorder columns. */
9664   /* If there is nothing that can be moved, then we return */
9665
9666   if (tree_view->priv->column_drag_info == NULL)
9667     return;
9668
9669   /* We know there are always 2 slots possbile, as you can always return column. */
9670   /* If that's all there is, return */
9671   if (tree_view->priv->column_drag_info->next == NULL ||
9672       (tree_view->priv->column_drag_info->next->next == NULL &&
9673        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9674        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9675     {
9676       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9677         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9678       g_list_free (tree_view->priv->column_drag_info);
9679       tree_view->priv->column_drag_info = NULL;
9680       return;
9681     }
9682   /* We fill in the ranges for the columns, now that we've isolated them */
9683   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9684
9685   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9686     {
9687       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9688
9689       reorder->left_align = left;
9690       if (tmp_list->next != NULL)
9691         {
9692           GtkAllocation right_allocation, left_allocation;
9693           GtkWidget    *left_button, *right_button;
9694
9695           g_assert (tmp_list->next->data);
9696
9697           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9698           left_button  = gtk_tree_view_column_get_button
9699             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9700
9701           gtk_widget_get_allocation (right_button, &right_allocation);
9702           gtk_widget_get_allocation (left_button, &left_allocation);
9703           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9704         }
9705       else
9706         {
9707           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9708                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9709         }
9710     }
9711 }
9712
9713 void
9714 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9715                                   GtkTreeViewColumn *column,
9716                                   GdkDevice         *device)
9717 {
9718   GdkEvent *send_event;
9719   GtkAllocation allocation;
9720   GtkAllocation button_allocation;
9721   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9722   GtkWidget *button;
9723   GdkDevice *pointer, *keyboard;
9724
9725   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9726   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9727
9728   gtk_tree_view_set_column_drag_info (tree_view, column);
9729
9730   if (tree_view->priv->column_drag_info == NULL)
9731     return;
9732
9733   button = gtk_tree_view_column_get_button (column);
9734
9735   if (tree_view->priv->drag_window == NULL)
9736     {
9737       GdkWindowAttr attributes;
9738       guint attributes_mask;
9739
9740       gtk_widget_get_allocation (button, &button_allocation);
9741
9742       attributes.window_type = GDK_WINDOW_CHILD;
9743       attributes.wclass = GDK_INPUT_OUTPUT;
9744       attributes.x = button_allocation.x;
9745       attributes.y = 0;
9746       attributes.width = button_allocation.width;
9747       attributes.height = button_allocation.height;
9748       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9749       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9750       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9751
9752       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9753                                                      &attributes,
9754                                                      attributes_mask);
9755       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9756     }
9757
9758   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9759     {
9760       keyboard = device;
9761       pointer = gdk_device_get_associated_device (device);
9762     }
9763   else
9764     {
9765       pointer = device;
9766       keyboard = gdk_device_get_associated_device (device);
9767     }
9768
9769   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9770   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9771
9772   gtk_grab_remove (button);
9773
9774   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9775   send_event->crossing.send_event = TRUE;
9776   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9777   send_event->crossing.subwindow = NULL;
9778   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9779   send_event->crossing.time = GDK_CURRENT_TIME;
9780   gdk_event_set_device (send_event, device);
9781
9782   gtk_propagate_event (button, send_event);
9783   gdk_event_free (send_event);
9784
9785   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9786   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9787   send_event->button.send_event = TRUE;
9788   send_event->button.time = GDK_CURRENT_TIME;
9789   send_event->button.x = -1;
9790   send_event->button.y = -1;
9791   send_event->button.axes = NULL;
9792   send_event->button.state = 0;
9793   send_event->button.button = 1;
9794   send_event->button.x_root = 0;
9795   send_event->button.y_root = 0;
9796   gdk_event_set_device (send_event, device);
9797
9798   gtk_propagate_event (button, send_event);
9799   gdk_event_free (send_event);
9800
9801   /* Kids, don't try this at home */
9802   g_object_ref (button);
9803   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9804   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9805   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9806   g_object_unref (button);
9807
9808   gtk_widget_get_allocation (button, &button_allocation);
9809   tree_view->priv->drag_column_x = button_allocation.x;
9810   allocation = button_allocation;
9811   allocation.x = 0;
9812   gtk_widget_size_allocate (button, &allocation);
9813   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9814
9815   tree_view->priv->drag_column = column;
9816   gdk_window_show (tree_view->priv->drag_window);
9817
9818   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9819   while (gtk_events_pending ())
9820     gtk_main_iteration ();
9821
9822   tree_view->priv->in_column_drag = TRUE;
9823
9824   gdk_device_grab (pointer,
9825                    tree_view->priv->drag_window,
9826                    GDK_OWNERSHIP_NONE,
9827                    FALSE,
9828                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9829                    NULL,
9830                    GDK_CURRENT_TIME);
9831   gdk_device_grab (keyboard,
9832                    tree_view->priv->drag_window,
9833                    GDK_OWNERSHIP_NONE,
9834                    FALSE,
9835                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9836                    NULL,
9837                    GDK_CURRENT_TIME);
9838 }
9839
9840 static void
9841 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9842                                 GtkRBTree          *tree,
9843                                 GtkRBNode          *node)
9844 {
9845   GtkAllocation allocation;
9846   GdkRectangle rect;
9847
9848   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9849     return;
9850
9851   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9852   rect.x = 0;
9853   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9854
9855   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9856   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9857
9858   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9859 }
9860
9861 void
9862 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9863                                 GtkRBTree          *tree,
9864                                 GtkRBNode          *node,
9865                                 const GdkRectangle *clip_rect)
9866 {
9867   GtkAllocation allocation;
9868   GdkRectangle rect;
9869
9870   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9871     return;
9872
9873   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9874   rect.x = 0;
9875   rect.width = MAX (tree_view->priv->width, allocation.width);
9876
9877   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9878   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9879
9880   if (clip_rect)
9881     {
9882       GdkRectangle new_rect;
9883
9884       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9885
9886       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9887     }
9888   else
9889     {
9890       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9891     }
9892 }
9893
9894 static inline gint
9895 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9896 {
9897   if (tree_view->priv->headers_visible)
9898     return tree_view->priv->header_height;
9899   /* else */
9900   return 0;
9901 }
9902
9903 gint
9904 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9905 {
9906   return tree_view->priv->header_height;
9907 }
9908
9909 void
9910 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9911                                        GtkTreeViewRowSeparatorFunc *func,
9912                                        gpointer                    *data)
9913 {
9914   *func = tree_view->priv->row_separator_func;
9915   *data = tree_view->priv->row_separator_data;
9916 }
9917
9918 GtkTreePath *
9919 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9920 {
9921   if (tree_view->priv->anchor)
9922     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9923
9924   return NULL;
9925 }
9926
9927 void
9928 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9929                                 GtkTreePath *anchor_path)
9930 {
9931   if (tree_view->priv->anchor)
9932     {
9933       gtk_tree_row_reference_free (tree_view->priv->anchor);
9934       tree_view->priv->anchor = NULL;
9935     }
9936
9937   if (anchor_path && tree_view->priv->model)
9938     tree_view->priv->anchor =
9939       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9940                                         tree_view->priv->model, anchor_path);
9941 }
9942
9943 GtkRBTree *
9944 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9945 {
9946   return tree_view->priv->tree;
9947 }
9948
9949 GdkWindow *
9950 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
9951 {
9952   return tree_view->priv->header_window;
9953 }
9954
9955 void
9956 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
9957                                  GtkTreeViewColumn *column)
9958 {
9959   tree_view->priv->focus_column = column;
9960 }
9961
9962
9963 static void
9964 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9965                                GtkTreePath        *path,
9966                                const GdkRectangle *clip_rect)
9967 {
9968   GtkRBTree *tree = NULL;
9969   GtkRBNode *node = NULL;
9970
9971   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9972
9973   if (tree)
9974     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9975 }
9976
9977 /* x and y are the mouse position
9978  */
9979 static void
9980 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9981                           cairo_t     *cr,
9982                           GtkRBTree   *tree,
9983                           GtkRBNode   *node)
9984 {
9985   GdkRectangle area;
9986   GtkStateFlags state = 0;
9987   GtkStyleContext *context;
9988   GtkWidget *widget;
9989   gint x_offset = 0;
9990   gint x2;
9991   gint vertical_separator;
9992   gint expander_size;
9993   GtkCellRendererState flags;
9994
9995   widget = GTK_WIDGET (tree_view);
9996   context = gtk_widget_get_style_context (widget);
9997
9998   gtk_widget_style_get (widget,
9999                         "vertical-separator", &vertical_separator,
10000                         NULL);
10001   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10002
10003   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10004     return;
10005
10006   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10007
10008   area.x = x_offset;
10009   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10010                                                  vertical_separator);
10011   area.width = expander_size;
10012   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10013                                                     vertical_separator);
10014
10015   if (!gtk_widget_get_sensitive (widget))
10016     state |= GTK_STATE_FLAG_INSENSITIVE;
10017   else
10018     {
10019       flags = 0;
10020
10021       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10022         flags |= GTK_CELL_RENDERER_SELECTED;
10023
10024       state = gtk_cell_renderer_get_state (NULL, widget, flags);
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->modify_selection_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_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10223
10224       search_first_focusable_path (tree_view, &cursor_path,
10225                                    (count != -1),
10226                                    &new_cursor_tree,
10227                                    &new_cursor_node);
10228
10229       if (cursor_path)
10230         gtk_tree_path_free (cursor_path);
10231     }
10232
10233   /*
10234    * If the list has only one item and multi-selection is set then select
10235    * the row (if not yet selected).
10236    */
10237   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10238       new_cursor_node == NULL)
10239     {
10240       if (count == -1)
10241         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10242                                &new_cursor_tree, &new_cursor_node);
10243       else
10244         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10245                                &new_cursor_tree, &new_cursor_node);
10246
10247       if (new_cursor_node == NULL
10248           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
10249         {
10250           new_cursor_node = cursor_node;
10251           new_cursor_tree = cursor_tree;
10252         }
10253       else
10254         {
10255           new_cursor_node = NULL;
10256         }
10257     }
10258
10259   if (new_cursor_node)
10260     {
10261       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10262       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10263       gtk_tree_path_free (cursor_path);
10264
10265       /* Give focus to the area in the new row */
10266       if (cell_area)
10267         gtk_cell_area_focus (cell_area, direction);
10268     }
10269   else
10270     {
10271       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10272
10273       if (!tree_view->priv->extend_selection_pressed)
10274         {
10275           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10276                                           count < 0 ?
10277                                           GTK_DIR_UP : GTK_DIR_DOWN))
10278             {
10279               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10280
10281               if (toplevel)
10282                 gtk_widget_child_focus (toplevel,
10283                                         count < 0 ?
10284                                         GTK_DIR_TAB_BACKWARD :
10285                                         GTK_DIR_TAB_FORWARD);
10286
10287               grab_focus = FALSE;
10288             }
10289         }
10290       else
10291         {
10292           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10293         }
10294
10295       if (cell_area)
10296         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10297     }
10298
10299   if (grab_focus)
10300     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10301 }
10302
10303 static void
10304 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10305                                         gint         count)
10306 {
10307   GtkRBTree *cursor_tree = NULL;
10308   GtkRBNode *cursor_node = NULL;
10309   GtkTreePath *old_cursor_path = NULL;
10310   GtkTreePath *cursor_path = NULL;
10311   GtkRBTree *start_cursor_tree = NULL;
10312   GtkRBNode *start_cursor_node = NULL;
10313   gint y;
10314   gint window_y;
10315   gint vertical_separator;
10316
10317   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10318     return;
10319
10320   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10321     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10322   else
10323     /* This is sorta weird.  Focus in should give us a cursor */
10324     return;
10325
10326   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10327   _gtk_tree_view_find_node (tree_view, old_cursor_path,
10328                             &cursor_tree, &cursor_node);
10329
10330   if (cursor_tree == NULL)
10331     {
10332       /* FIXME: we lost the cursor.  Should we try to get one? */
10333       gtk_tree_path_free (old_cursor_path);
10334       return;
10335     }
10336   g_return_if_fail (cursor_node != NULL);
10337
10338   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10339   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10340   y += tree_view->priv->cursor_offset;
10341   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10342   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10343
10344   if (y >= tree_view->priv->height)
10345     y = tree_view->priv->height - 1;
10346
10347   tree_view->priv->cursor_offset =
10348     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10349                              &cursor_tree, &cursor_node);
10350
10351   if (cursor_tree == NULL)
10352     {
10353       /* FIXME: we lost the cursor.  Should we try to get one? */
10354       gtk_tree_path_free (old_cursor_path);
10355       return;
10356     }
10357
10358   if (tree_view->priv->cursor_offset
10359       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10360     {
10361       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10362                              &cursor_tree, &cursor_node);
10363       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10364     }
10365
10366   y -= tree_view->priv->cursor_offset;
10367   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10368
10369   start_cursor_tree = cursor_tree;
10370   start_cursor_node = cursor_node;
10371
10372   if (! search_first_focusable_path (tree_view, &cursor_path,
10373                                      (count != -1),
10374                                      &cursor_tree, &cursor_node))
10375     {
10376       /* It looks like we reached the end of the view without finding
10377        * a focusable row.  We will step backwards to find the last
10378        * focusable row.
10379        */
10380       cursor_tree = start_cursor_tree;
10381       cursor_node = start_cursor_node;
10382       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10383
10384       search_first_focusable_path (tree_view, &cursor_path,
10385                                    (count == -1),
10386                                    &cursor_tree, &cursor_node);
10387     }
10388
10389   if (!cursor_path)
10390     goto cleanup;
10391
10392   /* update y */
10393   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10394
10395   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10396
10397   y -= window_y;
10398   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10399   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10400   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10401
10402   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10403     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10404
10405   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10406
10407 cleanup:
10408   gtk_tree_path_free (old_cursor_path);
10409   gtk_tree_path_free (cursor_path);
10410 }
10411
10412 static void
10413 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10414                                       gint         count)
10415 {
10416   GtkRBTree *cursor_tree = NULL;
10417   GtkRBNode *cursor_node = NULL;
10418   GtkTreePath *cursor_path = NULL;
10419   GtkTreeViewColumn *column;
10420   GtkTreeIter iter;
10421   GList *list;
10422   gboolean found_column = FALSE;
10423   gboolean rtl;
10424   GtkDirectionType direction;
10425   GtkCellArea     *cell_area;
10426   GtkCellRenderer *last_focus_cell = NULL;
10427   GtkCellArea     *last_focus_area = NULL;
10428
10429   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10430
10431   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10432     return;
10433
10434   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10435     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10436   else
10437     return;
10438
10439   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
10440   if (cursor_tree == NULL)
10441     return;
10442   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10443     {
10444       gtk_tree_path_free (cursor_path);
10445       return;
10446     }
10447   gtk_tree_path_free (cursor_path);
10448
10449   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10450   if (tree_view->priv->focus_column)
10451     {
10452       /* Save the cell/area we are moving focus from, if moving the cursor
10453        * by one step hits the end we'll set focus back here */
10454       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10455       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10456
10457       for (; list; list = (rtl ? list->prev : list->next))
10458         {
10459           if (list->data == tree_view->priv->focus_column)
10460             break;
10461         }
10462     }
10463
10464   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10465
10466   while (list)
10467     {
10468       column = list->data;
10469       if (gtk_tree_view_column_get_visible (column) == FALSE)
10470         goto loop_end;
10471
10472       gtk_tree_view_column_cell_set_cell_data (column,
10473                                                tree_view->priv->model,
10474                                                &iter,
10475                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10476                                                cursor_node->children?TRUE:FALSE);
10477
10478       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10479       if (gtk_cell_area_focus (cell_area, direction))
10480         {
10481           tree_view->priv->focus_column = column;
10482           found_column = TRUE;
10483           break;
10484         }
10485
10486     loop_end:
10487       if (count == 1)
10488         list = rtl ? list->prev : list->next;
10489       else
10490         list = rtl ? list->next : list->prev;
10491     }
10492
10493   if (found_column)
10494     {
10495       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10496         _gtk_tree_view_queue_draw_node (tree_view,
10497                                         cursor_tree,
10498                                         cursor_node,
10499                                         NULL);
10500       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10501       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10502     }
10503   else
10504     {
10505       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10506
10507       if (last_focus_area)
10508         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10509     }
10510
10511   gtk_tree_view_clamp_column_visible (tree_view,
10512                                       tree_view->priv->focus_column, TRUE);
10513 }
10514
10515 static void
10516 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10517                                      gint         count)
10518 {
10519   GtkRBTree *cursor_tree;
10520   GtkRBNode *cursor_node;
10521   GtkTreePath *path;
10522   GtkTreePath *old_path;
10523
10524   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10525     return;
10526
10527   g_return_if_fail (tree_view->priv->tree != NULL);
10528
10529   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10530
10531   cursor_tree = tree_view->priv->tree;
10532
10533   if (count == -1)
10534     {
10535       cursor_node = _gtk_rbtree_first (cursor_tree);
10536
10537       /* Now go forward to find the first focusable row. */
10538       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10539       search_first_focusable_path (tree_view, &path,
10540                                    TRUE, &cursor_tree, &cursor_node);
10541     }
10542   else
10543     {
10544       cursor_node = cursor_tree->root;
10545
10546       do
10547         {
10548           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10549             cursor_node = cursor_node->right;
10550           if (cursor_node->children == NULL)
10551             break;
10552
10553           cursor_tree = cursor_node->children;
10554           cursor_node = cursor_tree->root;
10555         }
10556       while (1);
10557
10558       /* Now go backwards to find last focusable row. */
10559       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10560       search_first_focusable_path (tree_view, &path,
10561                                    FALSE, &cursor_tree, &cursor_node);
10562     }
10563
10564   if (!path)
10565     goto cleanup;
10566
10567   if (gtk_tree_path_compare (old_path, path))
10568     {
10569       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10570       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10571     }
10572   else
10573     {
10574       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10575     }
10576
10577 cleanup:
10578   gtk_tree_path_free (old_path);
10579   gtk_tree_path_free (path);
10580 }
10581
10582 static gboolean
10583 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10584 {
10585   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10586     return FALSE;
10587
10588   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10589     return FALSE;
10590
10591   gtk_tree_selection_select_all (tree_view->priv->selection);
10592
10593   return TRUE;
10594 }
10595
10596 static gboolean
10597 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10598 {
10599   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10600     return FALSE;
10601
10602   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10603     return FALSE;
10604
10605   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10606
10607   return TRUE;
10608 }
10609
10610 static gboolean
10611 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10612                                       gboolean     start_editing)
10613 {
10614   GtkRBTree *new_tree = NULL;
10615   GtkRBNode *new_node = NULL;
10616   GtkRBTree *cursor_tree = NULL;
10617   GtkRBNode *cursor_node = NULL;
10618   GtkTreePath *cursor_path = NULL;
10619   GtkTreeSelectMode mode = 0;
10620
10621   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10622     return FALSE;
10623
10624   if (tree_view->priv->cursor)
10625     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10626
10627   if (cursor_path == NULL)
10628     return FALSE;
10629
10630   _gtk_tree_view_find_node (tree_view, cursor_path,
10631                             &cursor_tree, &cursor_node);
10632
10633   if (cursor_tree == NULL)
10634     {
10635       gtk_tree_path_free (cursor_path);
10636       return FALSE;
10637     }
10638
10639   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10640       tree_view->priv->focus_column)
10641     {
10642       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10643         {
10644           gtk_tree_path_free (cursor_path);
10645           return TRUE;
10646         }
10647     }
10648
10649   if (tree_view->priv->modify_selection_pressed)
10650     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10651   if (tree_view->priv->extend_selection_pressed)
10652     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10653
10654   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10655                                             cursor_node,
10656                                             cursor_tree,
10657                                             cursor_path,
10658                                             mode,
10659                                             FALSE);
10660
10661   /* We bail out if the original (tree, node) don't exist anymore after
10662    * handling the selection-changed callback.  We do return TRUE because
10663    * the key press has been handled at this point.
10664    */
10665   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10666
10667   if (cursor_tree != new_tree || cursor_node != new_node)
10668     return FALSE;
10669
10670   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10671
10672   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10673   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10674
10675   if (!tree_view->priv->extend_selection_pressed)
10676     gtk_tree_view_row_activated (tree_view, cursor_path,
10677                                  tree_view->priv->focus_column);
10678
10679   gtk_tree_path_free (cursor_path);
10680
10681   return TRUE;
10682 }
10683
10684 static gboolean
10685 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10686 {
10687   GtkRBTree *new_tree = NULL;
10688   GtkRBNode *new_node = NULL;
10689   GtkRBTree *cursor_tree = NULL;
10690   GtkRBNode *cursor_node = NULL;
10691   GtkTreePath *cursor_path = NULL;
10692
10693   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10694     return FALSE;
10695
10696   cursor_path = NULL;
10697   if (tree_view->priv->cursor)
10698     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10699
10700   if (cursor_path == NULL)
10701     return FALSE;
10702
10703   _gtk_tree_view_find_node (tree_view, cursor_path,
10704                             &cursor_tree, &cursor_node);
10705   if (cursor_tree == NULL)
10706     {
10707       gtk_tree_path_free (cursor_path);
10708       return FALSE;
10709     }
10710
10711   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10712                                             cursor_node,
10713                                             cursor_tree,
10714                                             cursor_path,
10715                                             GTK_TREE_SELECT_MODE_TOGGLE,
10716                                             FALSE);
10717
10718   /* We bail out if the original (tree, node) don't exist anymore after
10719    * handling the selection-changed callback.  We do return TRUE because
10720    * the key press has been handled at this point.
10721    */
10722   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10723
10724   if (cursor_tree != new_tree || cursor_node != new_node)
10725     return FALSE;
10726
10727   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10728
10729   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10730   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10731   gtk_tree_path_free (cursor_path);
10732
10733   return TRUE;
10734 }
10735
10736 static gboolean
10737 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10738                                                gboolean     logical,
10739                                                gboolean     expand,
10740                                                gboolean     open_all)
10741 {
10742   GtkTreePath *cursor_path = NULL;
10743   GtkRBTree *tree;
10744   GtkRBNode *node;
10745
10746   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10747     return FALSE;
10748
10749   cursor_path = NULL;
10750   if (tree_view->priv->cursor)
10751     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10752
10753   if (cursor_path == NULL)
10754     return FALSE;
10755
10756   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10757     return FALSE;
10758
10759   /* Don't handle the event if we aren't an expander */
10760   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10761     return FALSE;
10762
10763   if (!logical
10764       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10765     expand = !expand;
10766
10767   if (expand)
10768     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10769   else
10770     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10771
10772   gtk_tree_path_free (cursor_path);
10773
10774   return TRUE;
10775 }
10776
10777 static gboolean
10778 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10779 {
10780   GtkRBTree *cursor_tree = NULL;
10781   GtkRBNode *cursor_node = NULL;
10782   GtkTreePath *cursor_path = NULL;
10783   GdkModifierType state;
10784
10785   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10786     goto out;
10787
10788   cursor_path = NULL;
10789   if (tree_view->priv->cursor)
10790     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10791
10792   if (cursor_path == NULL)
10793     goto out;
10794
10795   _gtk_tree_view_find_node (tree_view, cursor_path,
10796                             &cursor_tree, &cursor_node);
10797   if (cursor_tree == NULL)
10798     {
10799       gtk_tree_path_free (cursor_path);
10800       goto out;
10801     }
10802
10803   if (cursor_tree->parent_node)
10804     {
10805       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10806       cursor_node = cursor_tree->parent_node;
10807       cursor_tree = cursor_tree->parent_tree;
10808
10809       gtk_tree_path_up (cursor_path);
10810
10811       if (gtk_get_current_event_state (&state))
10812         {
10813           GdkModifierType modify_mod_mask;
10814
10815           modify_mod_mask =
10816             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10817                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10818
10819           if ((state & modify_mod_mask) == modify_mod_mask)
10820             tree_view->priv->modify_selection_pressed = TRUE;
10821         }
10822
10823       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10824       gtk_tree_path_free (cursor_path);
10825
10826       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10827
10828       tree_view->priv->modify_selection_pressed = FALSE;
10829
10830       return TRUE;
10831     }
10832
10833  out:
10834
10835   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10836   return FALSE;
10837 }
10838
10839 static gboolean
10840 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10841 {
10842   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10843   tree_view->priv->typeselect_flush_timeout = 0;
10844
10845   return FALSE;
10846 }
10847
10848 /* Cut and paste from gtkwindow.c */
10849 static void
10850 send_focus_change (GtkWidget *widget,
10851                    GdkDevice *device,
10852                    gboolean   in)
10853 {
10854   GdkDeviceManager *device_manager;
10855   GList *devices, *d;
10856
10857   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10858   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10859   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10860   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10861
10862   for (d = devices; d; d = d->next)
10863     {
10864       GdkDevice *dev = d->data;
10865       GdkEvent *fevent;
10866       GdkWindow *window;
10867
10868       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10869         continue;
10870
10871       window = gtk_widget_get_window (widget);
10872
10873       /* Skip non-master keyboards that haven't
10874        * selected for events from this window
10875        */
10876       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10877           !gdk_window_get_device_events (window, dev))
10878         continue;
10879
10880       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10881
10882       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10883       fevent->focus_change.window = g_object_ref (window);
10884       fevent->focus_change.in = in;
10885       gdk_event_set_device (fevent, device);
10886
10887       gtk_widget_send_focus_change (widget, fevent);
10888
10889       gdk_event_free (fevent);
10890     }
10891
10892   g_list_free (devices);
10893 }
10894
10895 static void
10896 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10897 {
10898   GtkWidget *frame, *vbox, *toplevel;
10899   GdkScreen *screen;
10900
10901   if (tree_view->priv->search_custom_entry_set)
10902     return;
10903
10904   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10905   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10906
10907    if (tree_view->priv->search_window != NULL)
10908      {
10909        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10910          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10911                                       GTK_WINDOW (tree_view->priv->search_window));
10912        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10913          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10914                                          GTK_WINDOW (tree_view->priv->search_window));
10915
10916        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10917
10918        return;
10919      }
10920
10921   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10922   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10923
10924   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10925     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10926                                  GTK_WINDOW (tree_view->priv->search_window));
10927
10928   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10929                             GDK_WINDOW_TYPE_HINT_UTILITY);
10930   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10931   g_signal_connect (tree_view->priv->search_window, "delete-event",
10932                     G_CALLBACK (gtk_tree_view_search_delete_event),
10933                     tree_view);
10934   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10935                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10936                     tree_view);
10937   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10938                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10939                     tree_view);
10940   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10941                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10942                     tree_view);
10943
10944   frame = gtk_frame_new (NULL);
10945   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10946   gtk_widget_show (frame);
10947   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10948
10949   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10950   gtk_widget_show (vbox);
10951   gtk_container_add (GTK_CONTAINER (frame), vbox);
10952   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10953
10954   /* add entry */
10955   tree_view->priv->search_entry = gtk_entry_new ();
10956   gtk_widget_show (tree_view->priv->search_entry);
10957   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10958                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10959                     tree_view);
10960   g_signal_connect (tree_view->priv->search_entry,
10961                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10962                     tree_view);
10963
10964   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10965                     "preedit-changed",
10966                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10967                     tree_view);
10968
10969   gtk_container_add (GTK_CONTAINER (vbox),
10970                      tree_view->priv->search_entry);
10971
10972   gtk_widget_realize (tree_view->priv->search_entry);
10973 }
10974
10975 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10976  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10977  */
10978 static gboolean
10979 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10980                                              GdkDevice   *device,
10981                                              gboolean     keybinding)
10982 {
10983   /* We only start interactive search if we have focus or the columns
10984    * have focus.  If one of our children have focus, we don't want to
10985    * start the search.
10986    */
10987   GList *list;
10988   gboolean found_focus = FALSE;
10989   GtkWidgetClass *entry_parent_class;
10990
10991   if (!tree_view->priv->enable_search && !keybinding)
10992     return FALSE;
10993
10994   if (tree_view->priv->search_custom_entry_set)
10995     return FALSE;
10996
10997   if (tree_view->priv->search_window != NULL &&
10998       gtk_widget_get_visible (tree_view->priv->search_window))
10999     return TRUE;
11000
11001   for (list = tree_view->priv->columns; list; list = list->next)
11002     {
11003       GtkTreeViewColumn *column;
11004       GtkWidget         *button;
11005
11006       column = list->data;
11007       if (!gtk_tree_view_column_get_visible (column))
11008         continue;
11009
11010       button = gtk_tree_view_column_get_button (column);
11011       if (gtk_widget_has_focus (button))
11012         {
11013           found_focus = TRUE;
11014           break;
11015         }
11016     }
11017
11018   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11019     found_focus = TRUE;
11020
11021   if (!found_focus)
11022     return FALSE;
11023
11024   if (tree_view->priv->search_column < 0)
11025     return FALSE;
11026
11027   gtk_tree_view_ensure_interactive_directory (tree_view);
11028
11029   if (keybinding)
11030     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11031
11032   /* done, show it */
11033   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11034   gtk_widget_show (tree_view->priv->search_window);
11035   if (tree_view->priv->search_entry_changed_id == 0)
11036     {
11037       tree_view->priv->search_entry_changed_id =
11038         g_signal_connect (tree_view->priv->search_entry, "changed",
11039                           G_CALLBACK (gtk_tree_view_search_init),
11040                           tree_view);
11041     }
11042
11043   tree_view->priv->typeselect_flush_timeout =
11044     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11045                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11046                    tree_view);
11047
11048   /* Grab focus will select all the text.  We don't want that to happen, so we
11049    * call the parent instance and bypass the selection change.  This is probably
11050    * really non-kosher. */
11051   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11052   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11053
11054   /* send focus-in event */
11055   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11056
11057   /* search first matching iter */
11058   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11059
11060   return TRUE;
11061 }
11062
11063 static gboolean
11064 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11065 {
11066   return gtk_tree_view_real_start_interactive_search (tree_view,
11067                                                       gtk_get_current_event_device (),
11068                                                       TRUE);
11069 }
11070
11071 /* this function returns the new width of the column being resized given
11072  * the column and x position of the cursor; the x cursor position is passed
11073  * in as a pointer and automagicly corrected if it's beyond min/max limits
11074  */
11075 static gint
11076 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11077                                 gint       i,
11078                                 gint      *x)
11079 {
11080   GtkAllocation allocation;
11081   GtkTreeViewColumn *column;
11082   GtkRequisition button_req;
11083   gint max_width, min_width;
11084   gint width;
11085   gboolean rtl;
11086
11087   /* first translate the x position from widget->window
11088    * to clist->clist_window
11089    */
11090   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11091   column = g_list_nth (tree_view->priv->columns, i)->data;
11092   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11093   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11094
11095   /* Clamp down the value */
11096   min_width = gtk_tree_view_column_get_min_width (column);
11097   if (min_width == -1)
11098     {
11099       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11100       width = MAX (button_req.width, width);
11101     }
11102   else
11103     width = MAX (min_width, width);
11104
11105   max_width = gtk_tree_view_column_get_max_width (column);
11106   if (max_width != -1)
11107     width = MIN (width, max_width);
11108
11109   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11110
11111   return width;
11112 }
11113
11114
11115 /* FIXME this adjust_allocation is a big cut-and-paste from
11116  * GtkCList, needs to be some "official" way to do this
11117  * factored out.
11118  */
11119 typedef struct
11120 {
11121   GdkWindow *window;
11122   int dx;
11123   int dy;
11124 } ScrollData;
11125
11126 /* The window to which widget->window is relative */
11127 #define ALLOCATION_WINDOW(widget)               \
11128    (!gtk_widget_get_has_window (widget) ?                   \
11129     gtk_widget_get_window (widget) :                        \
11130     gdk_window_get_parent (gtk_widget_get_window (widget)))
11131
11132 static void
11133 adjust_allocation_recurse (GtkWidget *widget,
11134                            gpointer   data)
11135 {
11136   GtkAllocation allocation;
11137   ScrollData *scroll_data = data;
11138
11139   /* Need to really size allocate instead of just poking
11140    * into widget->allocation if the widget is not realized.
11141    * FIXME someone figure out why this was.
11142    */
11143   gtk_widget_get_allocation (widget, &allocation);
11144   if (!gtk_widget_get_realized (widget))
11145     {
11146       if (gtk_widget_get_visible (widget))
11147         {
11148           GdkRectangle tmp_rectangle = allocation;
11149           tmp_rectangle.x += scroll_data->dx;
11150           tmp_rectangle.y += scroll_data->dy;
11151
11152           gtk_widget_size_allocate (widget, &tmp_rectangle);
11153         }
11154     }
11155   else
11156     {
11157       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11158         {
11159           allocation.x += scroll_data->dx;
11160           allocation.y += scroll_data->dy;
11161           gtk_widget_set_allocation (widget, &allocation);
11162
11163           if (GTK_IS_CONTAINER (widget))
11164             gtk_container_forall (GTK_CONTAINER (widget),
11165                                   adjust_allocation_recurse,
11166                                   data);
11167         }
11168     }
11169 }
11170
11171 static void
11172 adjust_allocation (GtkWidget *widget,
11173                    int        dx,
11174                    int        dy)
11175 {
11176   ScrollData scroll_data;
11177
11178   if (gtk_widget_get_realized (widget))
11179     scroll_data.window = ALLOCATION_WINDOW (widget);
11180   else
11181     scroll_data.window = NULL;
11182
11183   scroll_data.dx = dx;
11184   scroll_data.dy = dy;
11185
11186   adjust_allocation_recurse (widget, &scroll_data);
11187 }
11188
11189 /* Callbacks */
11190 static void
11191 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11192                                   GtkTreeView   *tree_view)
11193 {
11194   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11195     {
11196       GtkStyleContext *context;
11197       gint dy;
11198
11199       gdk_window_move (tree_view->priv->bin_window,
11200                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11201                        gtk_tree_view_get_effective_header_height (tree_view));
11202       gdk_window_move (tree_view->priv->header_window,
11203                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11204                        0);
11205       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11206       if (dy)
11207         {
11208           update_prelight (tree_view,
11209                            tree_view->priv->event_last_x,
11210                            tree_view->priv->event_last_y - dy);
11211
11212           if (tree_view->priv->edited_column)
11213             {
11214               GList *list;
11215               GtkTreeViewChild *child = NULL;
11216               GtkCellEditable *edit_widget;
11217               GtkCellArea *area;
11218
11219               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11220               edit_widget = gtk_cell_area_get_edit_widget (area);
11221               if (GTK_IS_WIDGET (edit_widget))
11222                 {
11223                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11224
11225                   for (list = tree_view->priv->children; list; list = list->next)
11226                     {
11227                       child = (GtkTreeViewChild *)list->data;
11228                       if (child->widget == GTK_WIDGET (edit_widget))
11229                         {
11230                           child->y += dy;
11231                           break;
11232                         }
11233                     }
11234                 }
11235             }
11236         }
11237       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11238
11239       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11240       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11241
11242       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11243         {
11244           /* update our dy and top_row */
11245           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11246
11247           if (!tree_view->priv->in_top_row_to_dy)
11248             gtk_tree_view_dy_to_top_row (tree_view);
11249         }
11250
11251       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11252       gtk_tree_view_bin_process_updates (tree_view);
11253     }
11254 }
11255
11256 \f
11257
11258 /* Public methods
11259  */
11260
11261 /**
11262  * gtk_tree_view_new:
11263  *
11264  * Creates a new #GtkTreeView widget.
11265  *
11266  * Return value: A newly created #GtkTreeView widget.
11267  **/
11268 GtkWidget *
11269 gtk_tree_view_new (void)
11270 {
11271   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11272 }
11273
11274 /**
11275  * gtk_tree_view_new_with_model:
11276  * @model: the model.
11277  *
11278  * Creates a new #GtkTreeView widget with the model initialized to @model.
11279  *
11280  * Return value: A newly created #GtkTreeView widget.
11281  **/
11282 GtkWidget *
11283 gtk_tree_view_new_with_model (GtkTreeModel *model)
11284 {
11285   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11286 }
11287
11288 /* Public Accessors
11289  */
11290
11291 /**
11292  * gtk_tree_view_get_model:
11293  * @tree_view: a #GtkTreeView
11294  *
11295  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11296  * model is unset.
11297  *
11298  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11299  **/
11300 GtkTreeModel *
11301 gtk_tree_view_get_model (GtkTreeView *tree_view)
11302 {
11303   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11304
11305   return tree_view->priv->model;
11306 }
11307
11308 /**
11309  * gtk_tree_view_set_model:
11310  * @tree_view: A #GtkTreeNode.
11311  * @model: (allow-none): The model.
11312  *
11313  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11314  * set, it will remove it before setting the new model.  If @model is %NULL,
11315  * then it will unset the old model.
11316  **/
11317 void
11318 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11319                          GtkTreeModel *model)
11320 {
11321   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11322   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11323
11324   if (model == tree_view->priv->model)
11325     return;
11326
11327   if (tree_view->priv->scroll_to_path)
11328     {
11329       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11330       tree_view->priv->scroll_to_path = NULL;
11331     }
11332
11333   if (tree_view->priv->rubber_band_status)
11334     gtk_tree_view_stop_rubber_band (tree_view);
11335
11336   if (tree_view->priv->model)
11337     {
11338       GList *tmplist = tree_view->priv->columns;
11339       GtkStyleContext *context;
11340
11341       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11342       gtk_tree_view_stop_editing (tree_view, TRUE);
11343
11344       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11345       gtk_style_context_cancel_animations (context, NULL);
11346
11347       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11348                                             gtk_tree_view_row_changed,
11349                                             tree_view);
11350       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11351                                             gtk_tree_view_row_inserted,
11352                                             tree_view);
11353       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11354                                             gtk_tree_view_row_has_child_toggled,
11355                                             tree_view);
11356       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11357                                             gtk_tree_view_row_deleted,
11358                                             tree_view);
11359       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11360                                             gtk_tree_view_rows_reordered,
11361                                             tree_view);
11362
11363       for (; tmplist; tmplist = tmplist->next)
11364         _gtk_tree_view_column_unset_model (tmplist->data,
11365                                            tree_view->priv->model);
11366
11367       if (tree_view->priv->tree)
11368         gtk_tree_view_free_rbtree (tree_view);
11369
11370       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11371       tree_view->priv->drag_dest_row = NULL;
11372       gtk_tree_row_reference_free (tree_view->priv->cursor);
11373       tree_view->priv->cursor = NULL;
11374       gtk_tree_row_reference_free (tree_view->priv->anchor);
11375       tree_view->priv->anchor = NULL;
11376       gtk_tree_row_reference_free (tree_view->priv->top_row);
11377       tree_view->priv->top_row = NULL;
11378       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11379       tree_view->priv->scroll_to_path = NULL;
11380
11381       tree_view->priv->scroll_to_column = NULL;
11382
11383       g_object_unref (tree_view->priv->model);
11384
11385       tree_view->priv->search_column = -1;
11386       tree_view->priv->fixed_height_check = 0;
11387       tree_view->priv->fixed_height = -1;
11388       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11389       tree_view->priv->last_button_x = -1;
11390       tree_view->priv->last_button_y = -1;
11391     }
11392
11393   tree_view->priv->model = model;
11394
11395   if (tree_view->priv->model)
11396     {
11397       gint i;
11398       GtkTreePath *path;
11399       GtkTreeIter iter;
11400       GtkTreeModelFlags flags;
11401
11402       if (tree_view->priv->search_column == -1)
11403         {
11404           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11405             {
11406               GType type = gtk_tree_model_get_column_type (model, i);
11407
11408               if (g_value_type_transformable (type, G_TYPE_STRING))
11409                 {
11410                   tree_view->priv->search_column = i;
11411                   break;
11412                 }
11413             }
11414         }
11415
11416       g_object_ref (tree_view->priv->model);
11417       g_signal_connect (tree_view->priv->model,
11418                         "row-changed",
11419                         G_CALLBACK (gtk_tree_view_row_changed),
11420                         tree_view);
11421       g_signal_connect (tree_view->priv->model,
11422                         "row-inserted",
11423                         G_CALLBACK (gtk_tree_view_row_inserted),
11424                         tree_view);
11425       g_signal_connect (tree_view->priv->model,
11426                         "row-has-child-toggled",
11427                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11428                         tree_view);
11429       g_signal_connect (tree_view->priv->model,
11430                         "row-deleted",
11431                         G_CALLBACK (gtk_tree_view_row_deleted),
11432                         tree_view);
11433       g_signal_connect (tree_view->priv->model,
11434                         "rows-reordered",
11435                         G_CALLBACK (gtk_tree_view_rows_reordered),
11436                         tree_view);
11437
11438       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11439       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11440         tree_view->priv->is_list = TRUE;
11441       else
11442         tree_view->priv->is_list = FALSE;
11443
11444       path = gtk_tree_path_new_first ();
11445       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11446         {
11447           tree_view->priv->tree = _gtk_rbtree_new ();
11448           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11449         }
11450       gtk_tree_path_free (path);
11451
11452       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11453       install_presize_handler (tree_view);
11454     }
11455
11456   g_object_notify (G_OBJECT (tree_view), "model");
11457
11458   if (tree_view->priv->selection)
11459   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11460
11461   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11462     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11463 }
11464
11465 /**
11466  * gtk_tree_view_get_selection:
11467  * @tree_view: A #GtkTreeView.
11468  *
11469  * Gets the #GtkTreeSelection associated with @tree_view.
11470  *
11471  * Return value: (transfer none): A #GtkTreeSelection object.
11472  **/
11473 GtkTreeSelection *
11474 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11475 {
11476   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11477
11478   return tree_view->priv->selection;
11479 }
11480
11481 /**
11482  * gtk_tree_view_get_hadjustment:
11483  * @tree_view: A #GtkTreeView
11484  *
11485  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11486  *
11487  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11488  *     if none is currently being used.
11489  *
11490  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11491  **/
11492 GtkAdjustment *
11493 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11494 {
11495   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11496
11497   return gtk_tree_view_do_get_hadjustment (tree_view);
11498 }
11499
11500 static GtkAdjustment *
11501 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11502 {
11503   return tree_view->priv->hadjustment;
11504 }
11505
11506 /**
11507  * gtk_tree_view_set_hadjustment:
11508  * @tree_view: A #GtkTreeView
11509  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11510  *
11511  * Sets the #GtkAdjustment for the current horizontal aspect.
11512  *
11513  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11514  **/
11515 void
11516 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11517                                GtkAdjustment *adjustment)
11518 {
11519   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11520   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11521
11522   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11523 }
11524
11525 static void
11526 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11527                                   GtkAdjustment *adjustment)
11528 {
11529   GtkTreeViewPrivate *priv = tree_view->priv;
11530
11531   if (adjustment && priv->hadjustment == adjustment)
11532     return;
11533
11534   if (priv->hadjustment != NULL)
11535     {
11536       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11537                                             gtk_tree_view_adjustment_changed,
11538                                             tree_view);
11539       g_object_unref (priv->hadjustment);
11540     }
11541
11542   if (adjustment == NULL)
11543     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11544                                      0.0, 0.0, 0.0);
11545
11546   g_signal_connect (adjustment, "value-changed",
11547                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11548   priv->hadjustment = g_object_ref_sink (adjustment);
11549   /* FIXME: Adjustment should probably be populated here with fresh values, but
11550    * internal details are too complicated for me to decipher right now.
11551    */
11552   gtk_tree_view_adjustment_changed (NULL, tree_view);
11553
11554   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11555 }
11556
11557 /**
11558  * gtk_tree_view_get_vadjustment:
11559  * @tree_view: A #GtkTreeView
11560  *
11561  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11562  *
11563  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11564  *     if none is currently being used.
11565  *
11566  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11567  **/
11568 GtkAdjustment *
11569 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11570 {
11571   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11572
11573   return gtk_tree_view_do_get_vadjustment (tree_view);
11574 }
11575
11576 static GtkAdjustment *
11577 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11578 {
11579   return tree_view->priv->vadjustment;
11580 }
11581
11582 /**
11583  * gtk_tree_view_set_vadjustment:
11584  * @tree_view: A #GtkTreeView
11585  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11586  *
11587  * Sets the #GtkAdjustment for the current vertical aspect.
11588  *
11589  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11590  **/
11591 void
11592 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11593                                GtkAdjustment *adjustment)
11594 {
11595   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11596   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11597
11598   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11599 }
11600
11601 static void
11602 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11603                                   GtkAdjustment *adjustment)
11604 {
11605   GtkTreeViewPrivate *priv = tree_view->priv;
11606
11607   if (adjustment && priv->vadjustment == adjustment)
11608     return;
11609
11610   if (priv->vadjustment != NULL)
11611     {
11612       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11613                                             gtk_tree_view_adjustment_changed,
11614                                             tree_view);
11615       g_object_unref (priv->vadjustment);
11616     }
11617
11618   if (adjustment == NULL)
11619     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11620                                      0.0, 0.0, 0.0);
11621
11622   g_signal_connect (adjustment, "value-changed",
11623                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11624   priv->vadjustment = g_object_ref_sink (adjustment);
11625   /* FIXME: Adjustment should probably be populated here with fresh values, but
11626    * internal details are too complicated for me to decipher right now.
11627    */
11628   gtk_tree_view_adjustment_changed (NULL, tree_view);
11629   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11630 }
11631
11632 /* Column and header operations */
11633
11634 /**
11635  * gtk_tree_view_get_headers_visible:
11636  * @tree_view: A #GtkTreeView.
11637  *
11638  * Returns %TRUE if the headers on the @tree_view are visible.
11639  *
11640  * Return value: Whether the headers are visible or not.
11641  **/
11642 gboolean
11643 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11644 {
11645   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11646
11647   return tree_view->priv->headers_visible;
11648 }
11649
11650 /**
11651  * gtk_tree_view_set_headers_visible:
11652  * @tree_view: A #GtkTreeView.
11653  * @headers_visible: %TRUE if the headers are visible
11654  *
11655  * Sets the visibility state of the headers.
11656  **/
11657 void
11658 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11659                                    gboolean     headers_visible)
11660 {
11661   gint x, y;
11662   GList *list;
11663   GtkTreeViewColumn *column;
11664   GtkAllocation allocation;
11665   GtkWidget *button;
11666
11667   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11668
11669   headers_visible = !! headers_visible;
11670
11671   if (tree_view->priv->headers_visible == headers_visible)
11672     return;
11673
11674   tree_view->priv->headers_visible = headers_visible == TRUE;
11675
11676   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11677     {
11678       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11679       if (headers_visible)
11680         {
11681           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11682           gdk_window_move_resize (tree_view->priv->bin_window,
11683                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11684                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11685
11686           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11687             gtk_tree_view_map_buttons (tree_view);
11688         }
11689       else
11690         {
11691           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11692
11693           for (list = tree_view->priv->columns; list; list = list->next)
11694             {
11695               column = list->data;
11696               button = gtk_tree_view_column_get_button (column);
11697
11698               gtk_widget_hide (button);
11699               gtk_widget_unmap (button);
11700             }
11701           gdk_window_hide (tree_view->priv->header_window);
11702         }
11703     }
11704
11705   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11706   gtk_adjustment_configure (tree_view->priv->vadjustment,
11707                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11708                             0,
11709                             tree_view->priv->height,
11710                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11711                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11712                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11713
11714   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11715
11716   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11717 }
11718
11719 /**
11720  * gtk_tree_view_columns_autosize:
11721  * @tree_view: A #GtkTreeView.
11722  *
11723  * Resizes all columns to their optimal width. Only works after the
11724  * treeview has been realized.
11725  **/
11726 void
11727 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11728 {
11729   gboolean dirty = FALSE;
11730   GList *list;
11731   GtkTreeViewColumn *column;
11732
11733   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11734
11735   for (list = tree_view->priv->columns; list; list = list->next)
11736     {
11737       column = list->data;
11738       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11739         continue;
11740       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11741       dirty = TRUE;
11742     }
11743
11744   if (dirty)
11745     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11746 }
11747
11748 /**
11749  * gtk_tree_view_set_headers_clickable:
11750  * @tree_view: A #GtkTreeView.
11751  * @setting: %TRUE if the columns are clickable.
11752  *
11753  * Allow the column title buttons to be clicked.
11754  **/
11755 void
11756 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11757                                      gboolean   setting)
11758 {
11759   GList *list;
11760
11761   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11762
11763   for (list = tree_view->priv->columns; list; list = list->next)
11764     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11765
11766   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11767 }
11768
11769
11770 /**
11771  * gtk_tree_view_get_headers_clickable:
11772  * @tree_view: A #GtkTreeView.
11773  *
11774  * Returns whether all header columns are clickable.
11775  *
11776  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11777  *
11778  * Since: 2.10
11779  **/
11780 gboolean
11781 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11782 {
11783   GList *list;
11784
11785   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11786
11787   for (list = tree_view->priv->columns; list; list = list->next)
11788     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11789       return FALSE;
11790
11791   return TRUE;
11792 }
11793
11794 /**
11795  * gtk_tree_view_set_rules_hint
11796  * @tree_view: a #GtkTreeView
11797  * @setting: %TRUE if the tree requires reading across rows
11798  *
11799  * This function tells GTK+ that the user interface for your
11800  * application requires users to read across tree rows and associate
11801  * cells with one another. By default, GTK+ will then render the tree
11802  * with alternating row colors. Do <emphasis>not</emphasis> use it
11803  * just because you prefer the appearance of the ruled tree; that's a
11804  * question for the theme. Some themes will draw tree rows in
11805  * alternating colors even when rules are turned off, and users who
11806  * prefer that appearance all the time can choose those themes. You
11807  * should call this function only as a <emphasis>semantic</emphasis>
11808  * hint to the theme engine that your tree makes alternating colors
11809  * useful from a functional standpoint (since it has lots of columns,
11810  * generally).
11811  *
11812  **/
11813 void
11814 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11815                               gboolean      setting)
11816 {
11817   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11818
11819   setting = setting != FALSE;
11820
11821   if (tree_view->priv->has_rules != setting)
11822     {
11823       tree_view->priv->has_rules = setting;
11824       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11825     }
11826
11827   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11828 }
11829
11830 /**
11831  * gtk_tree_view_get_rules_hint
11832  * @tree_view: a #GtkTreeView
11833  *
11834  * Gets the setting set by gtk_tree_view_set_rules_hint().
11835  *
11836  * Return value: %TRUE if rules are useful for the user of this tree
11837  **/
11838 gboolean
11839 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11840 {
11841   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11842
11843   return tree_view->priv->has_rules;
11844 }
11845
11846 /* Public Column functions
11847  */
11848
11849 /**
11850  * gtk_tree_view_append_column:
11851  * @tree_view: A #GtkTreeView.
11852  * @column: The #GtkTreeViewColumn to add.
11853  *
11854  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11855  * mode enabled, then @column must have its "sizing" property set to be
11856  * GTK_TREE_VIEW_COLUMN_FIXED.
11857  *
11858  * Return value: The number of columns in @tree_view after appending.
11859  **/
11860 gint
11861 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11862                              GtkTreeViewColumn *column)
11863 {
11864   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11865   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11866   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11867
11868   return gtk_tree_view_insert_column (tree_view, column, -1);
11869 }
11870
11871 void
11872 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11873 {
11874   GList *columns;
11875
11876   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11877     {
11878       GtkTreeViewColumn *column = columns->data;
11879       GtkWidget *header_widget;
11880
11881       if (gtk_tree_view_column_get_visible (column))
11882         continue;
11883
11884       header_widget = gtk_tree_view_column_get_widget (column);
11885
11886       if (!header_widget)
11887         header_widget = gtk_tree_view_column_get_button (column);
11888
11889       gtk_widget_reset_style (header_widget);
11890     }
11891 }
11892
11893
11894 /**
11895  * gtk_tree_view_remove_column:
11896  * @tree_view: A #GtkTreeView.
11897  * @column: The #GtkTreeViewColumn to remove.
11898  *
11899  * Removes @column from @tree_view.
11900  *
11901  * Return value: The number of columns in @tree_view after removing.
11902  **/
11903 gint
11904 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11905                              GtkTreeViewColumn *column)
11906 {
11907   guint position;
11908
11909   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11910   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11911   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11912
11913   if (tree_view->priv->focus_column == column)
11914     tree_view->priv->focus_column = NULL;
11915
11916   if (tree_view->priv->edited_column == column)
11917     {
11918       gtk_tree_view_stop_editing (tree_view, TRUE);
11919
11920       /* no need to, but just to be sure ... */
11921       tree_view->priv->edited_column = NULL;
11922     }
11923
11924   if (tree_view->priv->expander_column == column)
11925     tree_view->priv->expander_column = NULL;
11926
11927   g_signal_handlers_disconnect_by_func (column,
11928                                         G_CALLBACK (column_sizing_notify),
11929                                         tree_view);
11930
11931   _gtk_tree_view_column_unset_tree_view (column);
11932
11933   position = g_list_index (tree_view->priv->columns, column);
11934
11935   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11936   tree_view->priv->n_columns--;
11937
11938   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11939     {
11940       GList *list;
11941
11942       _gtk_tree_view_column_unrealize_button (column);
11943       for (list = tree_view->priv->columns; list; list = list->next)
11944         {
11945           GtkTreeViewColumn *tmp_column;
11946
11947           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11948           if (gtk_tree_view_column_get_visible (tmp_column))
11949             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11950         }
11951
11952       if (tree_view->priv->n_columns == 0 &&
11953           gtk_tree_view_get_headers_visible (tree_view))
11954         gdk_window_hide (tree_view->priv->header_window);
11955
11956       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11957     }
11958
11959   _gtk_tree_view_reset_header_styles (tree_view);
11960
11961   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11962
11963   g_object_unref (column);
11964   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11965
11966   return tree_view->priv->n_columns;
11967 }
11968
11969 /**
11970  * gtk_tree_view_insert_column:
11971  * @tree_view: A #GtkTreeView.
11972  * @column: The #GtkTreeViewColumn to be inserted.
11973  * @position: The position to insert @column in.
11974  *
11975  * This inserts the @column into the @tree_view at @position.  If @position is
11976  * -1, then the column is inserted at the end. If @tree_view has
11977  * "fixed_height" mode enabled, then @column must have its "sizing" property
11978  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11979  *
11980  * Return value: The number of columns in @tree_view after insertion.
11981  **/
11982 gint
11983 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11984                              GtkTreeViewColumn *column,
11985                              gint               position)
11986 {
11987   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11988   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11989   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11990
11991   if (tree_view->priv->fixed_height_mode)
11992     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11993                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11994
11995   if (position < 0 || position > tree_view->priv->n_columns)
11996     position = tree_view->priv->n_columns;
11997
11998   g_object_ref_sink (column);
11999
12000   if (tree_view->priv->n_columns == 0 &&
12001       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12002       gtk_tree_view_get_headers_visible (tree_view))
12003     {
12004       gdk_window_show (tree_view->priv->header_window);
12005     }
12006
12007   g_signal_connect (column, "notify::sizing",
12008                     G_CALLBACK (column_sizing_notify), tree_view);
12009
12010   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12011                                             column, position);
12012   tree_view->priv->n_columns++;
12013
12014   _gtk_tree_view_column_set_tree_view (column, tree_view);
12015
12016   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12017     {
12018       GList *list;
12019
12020       _gtk_tree_view_column_realize_button (column);
12021
12022       for (list = tree_view->priv->columns; list; list = list->next)
12023         {
12024           column = GTK_TREE_VIEW_COLUMN (list->data);
12025           if (gtk_tree_view_column_get_visible (column))
12026             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12027         }
12028       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12029     }
12030
12031   _gtk_tree_view_reset_header_styles (tree_view);
12032
12033   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12034
12035   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12036
12037   return tree_view->priv->n_columns;
12038 }
12039
12040 /**
12041  * gtk_tree_view_insert_column_with_attributes:
12042  * @tree_view: A #GtkTreeView
12043  * @position: The position to insert the new column in
12044  * @title: The title to set the header to
12045  * @cell: The #GtkCellRenderer
12046  * @...: A %NULL-terminated list of attributes
12047  *
12048  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12049  * @position.  If @position is -1, then the newly created column is inserted at
12050  * the end.  The column is initialized with the attributes given. If @tree_view
12051  * has "fixed_height" mode enabled, then the new column will have its sizing
12052  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12053  *
12054  * Return value: The number of columns in @tree_view after insertion.
12055  **/
12056 gint
12057 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12058                                              gint             position,
12059                                              const gchar     *title,
12060                                              GtkCellRenderer *cell,
12061                                              ...)
12062 {
12063   GtkTreeViewColumn *column;
12064   gchar *attribute;
12065   va_list args;
12066   gint column_id;
12067
12068   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12069
12070   column = gtk_tree_view_column_new ();
12071   if (tree_view->priv->fixed_height_mode)
12072     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12073
12074   gtk_tree_view_column_set_title (column, title);
12075   gtk_tree_view_column_pack_start (column, cell, TRUE);
12076
12077   va_start (args, cell);
12078
12079   attribute = va_arg (args, gchar *);
12080
12081   while (attribute != NULL)
12082     {
12083       column_id = va_arg (args, gint);
12084       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12085       attribute = va_arg (args, gchar *);
12086     }
12087
12088   va_end (args);
12089
12090   return gtk_tree_view_insert_column (tree_view, column, position);
12091 }
12092
12093 /**
12094  * gtk_tree_view_insert_column_with_data_func:
12095  * @tree_view: a #GtkTreeView
12096  * @position: Position to insert, -1 for append
12097  * @title: column title
12098  * @cell: cell renderer for column
12099  * @func: function to set attributes of cell renderer
12100  * @data: data for @func
12101  * @dnotify: destroy notifier for @data
12102  *
12103  * Convenience function that inserts a new column into the #GtkTreeView
12104  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12105  * attributes (normally using data from the model). See also
12106  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12107  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12108  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12109  *
12110  * Return value: number of columns in the tree view post-insert
12111  **/
12112 gint
12113 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12114                                              gint                       position,
12115                                              const gchar               *title,
12116                                              GtkCellRenderer           *cell,
12117                                              GtkTreeCellDataFunc        func,
12118                                              gpointer                   data,
12119                                              GDestroyNotify             dnotify)
12120 {
12121   GtkTreeViewColumn *column;
12122
12123   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12124
12125   column = gtk_tree_view_column_new ();
12126   if (tree_view->priv->fixed_height_mode)
12127     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12128
12129   gtk_tree_view_column_set_title (column, title);
12130   gtk_tree_view_column_pack_start (column, cell, TRUE);
12131   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12132
12133   return gtk_tree_view_insert_column (tree_view, column, position);
12134 }
12135
12136 /**
12137  * gtk_tree_view_get_n_columns:
12138  * @tree_view: a #GtkTreeView
12139  *
12140  * Queries the number of columns in the given @tree_view.
12141  *
12142  * Returns: The number of columns in the @tree_view
12143  *
12144  * Since: 3.4
12145  **/
12146 guint
12147 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12148 {
12149   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12150
12151   return tree_view->priv->n_columns;
12152 }
12153
12154 /**
12155  * gtk_tree_view_get_column:
12156  * @tree_view: A #GtkTreeView.
12157  * @n: The position of the column, counting from 0.
12158  *
12159  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12160  *
12161  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12162  *     position is outside the range of columns.
12163  **/
12164 GtkTreeViewColumn *
12165 gtk_tree_view_get_column (GtkTreeView *tree_view,
12166                           gint         n)
12167 {
12168   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12169
12170   if (n < 0 || n >= tree_view->priv->n_columns)
12171     return NULL;
12172
12173   if (tree_view->priv->columns == NULL)
12174     return NULL;
12175
12176   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12177 }
12178
12179 /**
12180  * gtk_tree_view_get_columns:
12181  * @tree_view: A #GtkTreeView
12182  *
12183  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12184  * The returned list must be freed with g_list_free ().
12185  *
12186  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12187  **/
12188 GList *
12189 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12190 {
12191   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12192
12193   return g_list_copy (tree_view->priv->columns);
12194 }
12195
12196 /**
12197  * gtk_tree_view_move_column_after:
12198  * @tree_view: A #GtkTreeView
12199  * @column: The #GtkTreeViewColumn to be moved.
12200  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12201  *
12202  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12203  * @column is placed in the first position.
12204  **/
12205 void
12206 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12207                                  GtkTreeViewColumn *column,
12208                                  GtkTreeViewColumn *base_column)
12209 {
12210   GList *column_list_el, *base_el = NULL;
12211
12212   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12213
12214   column_list_el = g_list_find (tree_view->priv->columns, column);
12215   g_return_if_fail (column_list_el != NULL);
12216
12217   if (base_column)
12218     {
12219       base_el = g_list_find (tree_view->priv->columns, base_column);
12220       g_return_if_fail (base_el != NULL);
12221     }
12222
12223   if (column_list_el->prev == base_el)
12224     return;
12225
12226   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12227   if (base_el == NULL)
12228     {
12229       column_list_el->prev = NULL;
12230       column_list_el->next = tree_view->priv->columns;
12231       if (column_list_el->next)
12232         column_list_el->next->prev = column_list_el;
12233       tree_view->priv->columns = column_list_el;
12234     }
12235   else
12236     {
12237       column_list_el->prev = base_el;
12238       column_list_el->next = base_el->next;
12239       if (column_list_el->next)
12240         column_list_el->next->prev = column_list_el;
12241       base_el->next = column_list_el;
12242     }
12243
12244   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12245     {
12246       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12247       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12248     }
12249
12250   _gtk_tree_view_reset_header_styles (tree_view);
12251
12252   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12253
12254   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12255 }
12256
12257 /**
12258  * gtk_tree_view_set_expander_column:
12259  * @tree_view: A #GtkTreeView
12260  * @column: %NULL, or the column to draw the expander arrow at.
12261  *
12262  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12263  * If @column is %NULL, then the expander arrow is always at the first
12264  * visible column.
12265  *
12266  * If you do not want expander arrow to appear in your tree, set the
12267  * expander column to a hidden column.
12268  **/
12269 void
12270 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12271                                    GtkTreeViewColumn *column)
12272 {
12273   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12274   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12275   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12276
12277   if (tree_view->priv->expander_column != column)
12278     {
12279       tree_view->priv->expander_column = column;
12280       g_object_notify (G_OBJECT (tree_view), "expander-column");
12281     }
12282 }
12283
12284 /**
12285  * gtk_tree_view_get_expander_column:
12286  * @tree_view: A #GtkTreeView
12287  *
12288  * Returns the column that is the current expander column.
12289  * This column has the expander arrow drawn next to it.
12290  *
12291  * Return value: (transfer none): The expander column.
12292  **/
12293 GtkTreeViewColumn *
12294 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12295 {
12296   GList *list;
12297
12298   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12299
12300   for (list = tree_view->priv->columns; list; list = list->next)
12301     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12302       return (GtkTreeViewColumn *) list->data;
12303   return NULL;
12304 }
12305
12306
12307 /**
12308  * gtk_tree_view_set_column_drag_function:
12309  * @tree_view: A #GtkTreeView.
12310  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12311  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12312  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12313  *
12314  * Sets a user function for determining where a column may be dropped when
12315  * dragged.  This function is called on every column pair in turn at the
12316  * beginning of a column drag to determine where a drop can take place.  The
12317  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12318  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12319  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12320  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12321  * @tree_view reverts to the default behavior of allowing all columns to be
12322  * dropped everywhere.
12323  **/
12324 void
12325 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12326                                         GtkTreeViewColumnDropFunc  func,
12327                                         gpointer                   user_data,
12328                                         GDestroyNotify             destroy)
12329 {
12330   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12331
12332   if (tree_view->priv->column_drop_func_data_destroy)
12333     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12334
12335   tree_view->priv->column_drop_func = func;
12336   tree_view->priv->column_drop_func_data = user_data;
12337   tree_view->priv->column_drop_func_data_destroy = destroy;
12338 }
12339
12340 /**
12341  * gtk_tree_view_scroll_to_point:
12342  * @tree_view: a #GtkTreeView
12343  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12344  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12345  *
12346  * Scrolls the tree view such that the top-left corner of the visible
12347  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12348  * in tree coordinates.  The @tree_view must be realized before
12349  * this function is called.  If it isn't, you probably want to be
12350  * using gtk_tree_view_scroll_to_cell().
12351  *
12352  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12353  **/
12354 void
12355 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12356                                gint         tree_x,
12357                                gint         tree_y)
12358 {
12359   GtkAdjustment *hadj;
12360   GtkAdjustment *vadj;
12361
12362   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12363   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12364
12365   hadj = tree_view->priv->hadjustment;
12366   vadj = tree_view->priv->vadjustment;
12367
12368   if (tree_x != -1)
12369     gtk_adjustment_set_value (hadj, tree_x);
12370   if (tree_y != -1)
12371     gtk_adjustment_set_value (vadj, tree_y);
12372 }
12373
12374 /**
12375  * gtk_tree_view_scroll_to_cell:
12376  * @tree_view: A #GtkTreeView.
12377  * @path: (allow-none): The path of the row to move to, or %NULL.
12378  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12379  * @use_align: whether to use alignment arguments, or %FALSE.
12380  * @row_align: The vertical alignment of the row specified by @path.
12381  * @col_align: The horizontal alignment of the column specified by @column.
12382  *
12383  * Moves the alignments of @tree_view to the position specified by @column and
12384  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12385  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12386  * or @path need to be non-%NULL.  @row_align determines where the row is
12387  * placed, and @col_align determines where @column is placed.  Both are expected
12388  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12389  * right/bottom alignment, 0.5 means center.
12390  *
12391  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12392  * tree does the minimum amount of work to scroll the cell onto the screen.
12393  * This means that the cell will be scrolled to the edge closest to its current
12394  * position.  If the cell is currently visible on the screen, nothing is done.
12395  *
12396  * This function only works if the model is set, and @path is a valid row on the
12397  * model.  If the model changes before the @tree_view is realized, the centered
12398  * path will be modified to reflect this change.
12399  **/
12400 void
12401 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12402                               GtkTreePath       *path,
12403                               GtkTreeViewColumn *column,
12404                               gboolean           use_align,
12405                               gfloat             row_align,
12406                               gfloat             col_align)
12407 {
12408   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12409   g_return_if_fail (tree_view->priv->model != NULL);
12410   g_return_if_fail (tree_view->priv->tree != NULL);
12411   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12412   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12413   g_return_if_fail (path != NULL || column != NULL);
12414
12415 #if 0
12416   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12417            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12418 #endif
12419   row_align = CLAMP (row_align, 0.0, 1.0);
12420   col_align = CLAMP (col_align, 0.0, 1.0);
12421
12422
12423   /* Note: Despite the benefits that come from having one code path for the
12424    * scrolling code, we short-circuit validate_visible_area's immplementation as
12425    * it is much slower than just going to the point.
12426    */
12427   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12428       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12429       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12430       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12431     {
12432       if (tree_view->priv->scroll_to_path)
12433         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12434
12435       tree_view->priv->scroll_to_path = NULL;
12436       tree_view->priv->scroll_to_column = NULL;
12437
12438       if (path)
12439         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12440       if (column)
12441         tree_view->priv->scroll_to_column = column;
12442       tree_view->priv->scroll_to_use_align = use_align;
12443       tree_view->priv->scroll_to_row_align = row_align;
12444       tree_view->priv->scroll_to_col_align = col_align;
12445
12446       install_presize_handler (tree_view);
12447     }
12448   else
12449     {
12450       GdkRectangle cell_rect;
12451       GdkRectangle vis_rect;
12452       gint dest_x, dest_y;
12453
12454       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12455       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12456
12457       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12458
12459       dest_x = vis_rect.x;
12460       dest_y = vis_rect.y;
12461
12462       if (column)
12463         {
12464           if (use_align)
12465             {
12466               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12467             }
12468           else
12469             {
12470               if (cell_rect.x < vis_rect.x)
12471                 dest_x = cell_rect.x;
12472               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12473                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12474             }
12475         }
12476
12477       if (path)
12478         {
12479           if (use_align)
12480             {
12481               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12482               dest_y = MAX (dest_y, 0);
12483             }
12484           else
12485             {
12486               if (cell_rect.y < vis_rect.y)
12487                 dest_y = cell_rect.y;
12488               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12489                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12490             }
12491         }
12492
12493       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12494     }
12495 }
12496
12497 /**
12498  * gtk_tree_view_row_activated:
12499  * @tree_view: A #GtkTreeView
12500  * @path: The #GtkTreePath to be activated.
12501  * @column: The #GtkTreeViewColumn to be activated.
12502  *
12503  * Activates the cell determined by @path and @column.
12504  **/
12505 void
12506 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12507                              GtkTreePath       *path,
12508                              GtkTreeViewColumn *column)
12509 {
12510   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12511
12512   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12513 }
12514
12515
12516 static void
12517 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12518                                           GtkRBNode *node,
12519                                           gpointer   data)
12520 {
12521   GtkTreeView *tree_view = data;
12522
12523   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12524       node->children)
12525     {
12526       GtkTreePath *path;
12527       GtkTreeIter iter;
12528
12529       path = _gtk_tree_path_new_from_rbtree (tree, node);
12530       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12531
12532       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12533
12534       gtk_tree_path_free (path);
12535     }
12536
12537   if (node->children)
12538     _gtk_rbtree_traverse (node->children,
12539                           node->children->root,
12540                           G_PRE_ORDER,
12541                           gtk_tree_view_expand_all_emission_helper,
12542                           tree_view);
12543 }
12544
12545 /**
12546  * gtk_tree_view_expand_all:
12547  * @tree_view: A #GtkTreeView.
12548  *
12549  * Recursively expands all nodes in the @tree_view.
12550  **/
12551 void
12552 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12553 {
12554   GtkTreePath *path;
12555   GtkRBTree *tree;
12556   GtkRBNode *node;
12557
12558   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12559
12560   if (tree_view->priv->tree == NULL)
12561     return;
12562
12563   path = gtk_tree_path_new_first ();
12564   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12565
12566   while (node)
12567     {
12568       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12569       node = _gtk_rbtree_next (tree, node);
12570       gtk_tree_path_next (path);
12571   }
12572
12573   gtk_tree_path_free (path);
12574 }
12575
12576 /**
12577  * gtk_tree_view_collapse_all:
12578  * @tree_view: A #GtkTreeView.
12579  *
12580  * Recursively collapses all visible, expanded nodes in @tree_view.
12581  **/
12582 void
12583 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12584 {
12585   GtkRBTree *tree;
12586   GtkRBNode *node;
12587   GtkTreePath *path;
12588   gint *indices;
12589
12590   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12591
12592   if (tree_view->priv->tree == NULL)
12593     return;
12594
12595   path = gtk_tree_path_new ();
12596   gtk_tree_path_down (path);
12597   indices = gtk_tree_path_get_indices (path);
12598
12599   tree = tree_view->priv->tree;
12600   node = _gtk_rbtree_first (tree);
12601
12602   while (node)
12603     {
12604       if (node->children)
12605         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12606       indices[0]++;
12607       node = _gtk_rbtree_next (tree, node);
12608     }
12609
12610   gtk_tree_path_free (path);
12611 }
12612
12613 /**
12614  * gtk_tree_view_expand_to_path:
12615  * @tree_view: A #GtkTreeView.
12616  * @path: path to a row.
12617  *
12618  * Expands the row at @path. This will also expand all parent rows of
12619  * @path as necessary.
12620  *
12621  * Since: 2.2
12622  **/
12623 void
12624 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12625                               GtkTreePath *path)
12626 {
12627   gint i, depth;
12628   gint *indices;
12629   GtkTreePath *tmp;
12630
12631   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12632   g_return_if_fail (path != NULL);
12633
12634   depth = gtk_tree_path_get_depth (path);
12635   indices = gtk_tree_path_get_indices (path);
12636
12637   tmp = gtk_tree_path_new ();
12638   g_return_if_fail (tmp != NULL);
12639
12640   for (i = 0; i < depth; i++)
12641     {
12642       gtk_tree_path_append_index (tmp, indices[i]);
12643       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12644     }
12645
12646   gtk_tree_path_free (tmp);
12647 }
12648
12649 /* FIXME the bool return values for expand_row and collapse_row are
12650  * not analagous; they should be TRUE if the row had children and
12651  * was not already in the requested state.
12652  */
12653
12654
12655 static gboolean
12656 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12657                                GtkTreePath *path,
12658                                GtkRBTree   *tree,
12659                                GtkRBNode   *node,
12660                                gboolean     open_all,
12661                                gboolean     animate)
12662 {
12663   GtkTreeIter iter;
12664   GtkTreeIter temp;
12665   gboolean expand;
12666
12667   if (animate)
12668     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12669                   "gtk-enable-animations", &animate,
12670                   NULL);
12671
12672   remove_auto_expand_timeout (tree_view);
12673
12674   if (node->children && !open_all)
12675     return FALSE;
12676
12677   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12678     return FALSE;
12679
12680   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12681   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12682     return FALSE;
12683
12684
12685    if (node->children && open_all)
12686     {
12687       gboolean retval = FALSE;
12688       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12689
12690       gtk_tree_path_append_index (tmp_path, 0);
12691       tree = node->children;
12692       node = _gtk_rbtree_first (tree);
12693       /* try to expand the children */
12694       do
12695         {
12696          gboolean t;
12697          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12698                                             TRUE, animate);
12699          if (t)
12700            retval = TRUE;
12701
12702          gtk_tree_path_next (tmp_path);
12703          node = _gtk_rbtree_next (tree, node);
12704        }
12705       while (node != NULL);
12706
12707       gtk_tree_path_free (tmp_path);
12708
12709       return retval;
12710     }
12711
12712   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12713
12714   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12715     return FALSE;
12716
12717   if (expand)
12718     return FALSE;
12719
12720   node->children = _gtk_rbtree_new ();
12721   node->children->parent_tree = tree;
12722   node->children->parent_node = node;
12723
12724   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12725
12726   gtk_tree_view_build_tree (tree_view,
12727                             node->children,
12728                             &temp,
12729                             gtk_tree_path_get_depth (path) + 1,
12730                             open_all);
12731
12732   if (animate)
12733     {
12734       GtkStyleContext *context;
12735
12736       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12737
12738       gtk_style_context_save (context);
12739       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12740
12741       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12742                                              node, GTK_STATE_ACTIVE, TRUE);
12743
12744       _gtk_style_context_invalidate_animation_areas (context);
12745       gtk_style_context_restore (context);
12746     }
12747
12748   install_presize_handler (tree_view);
12749
12750   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12751   if (open_all && node->children)
12752     {
12753       _gtk_rbtree_traverse (node->children,
12754                             node->children->root,
12755                             G_PRE_ORDER,
12756                             gtk_tree_view_expand_all_emission_helper,
12757                             tree_view);
12758     }
12759   return TRUE;
12760 }
12761
12762
12763 /**
12764  * gtk_tree_view_expand_row:
12765  * @tree_view: a #GtkTreeView
12766  * @path: path to a row
12767  * @open_all: whether to recursively expand, or just expand immediate children
12768  *
12769  * Opens the row so its children are visible.
12770  *
12771  * Return value: %TRUE if the row existed and had children
12772  **/
12773 gboolean
12774 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12775                           GtkTreePath *path,
12776                           gboolean     open_all)
12777 {
12778   GtkRBTree *tree;
12779   GtkRBNode *node;
12780
12781   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12782   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12783   g_return_val_if_fail (path != NULL, FALSE);
12784
12785   if (_gtk_tree_view_find_node (tree_view,
12786                                 path,
12787                                 &tree,
12788                                 &node))
12789     return FALSE;
12790
12791   if (tree != NULL)
12792     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12793   else
12794     return FALSE;
12795 }
12796
12797 static gboolean
12798 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12799                                  GtkTreePath *path,
12800                                  GtkRBTree   *tree,
12801                                  GtkRBNode   *node,
12802                                  gboolean     animate)
12803 {
12804   GtkTreeIter iter;
12805   GtkTreeIter children;
12806   gboolean collapse;
12807   gint x, y;
12808   GList *list;
12809   GdkWindow *child;
12810   gboolean selection_changed, cursor_changed;
12811
12812   if (animate)
12813     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12814                   "gtk-enable-animations", &animate,
12815                   NULL);
12816
12817   remove_auto_expand_timeout (tree_view);
12818
12819   if (node->children == NULL)
12820     return FALSE;
12821   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12822
12823   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12824
12825   if (collapse)
12826     return FALSE;
12827
12828   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12829    * a chance to prelight the correct node below */
12830
12831   if (tree_view->priv->prelight_tree)
12832     {
12833       GtkRBTree *parent_tree;
12834       GtkRBNode *parent_node;
12835
12836       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12837       parent_node = tree_view->priv->prelight_tree->parent_node;
12838       while (parent_tree)
12839         {
12840           if (parent_tree == tree && parent_node == node)
12841             {
12842               ensure_unprelighted (tree_view);
12843               break;
12844             }
12845           parent_node = parent_tree->parent_node;
12846           parent_tree = parent_tree->parent_tree;
12847         }
12848     }
12849
12850   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12851
12852   for (list = tree_view->priv->columns; list; list = list->next)
12853     {
12854       GtkTreeViewColumn *column = list->data;
12855
12856       if (gtk_tree_view_column_get_visible (column) == FALSE)
12857         continue;
12858       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12859         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12860     }
12861
12862   if (tree_view->priv->destroy_count_func)
12863     {
12864       GtkTreePath *child_path;
12865       gint child_count = 0;
12866       child_path = gtk_tree_path_copy (path);
12867       gtk_tree_path_down (child_path);
12868       if (node->children)
12869         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12870       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12871       gtk_tree_path_free (child_path);
12872     }
12873
12874   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12875     {
12876       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12877
12878       cursor_changed = gtk_tree_path_is_ancestor (path, cursor_path);
12879
12880       gtk_tree_path_free (cursor_path);
12881     }
12882
12883   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12884     {
12885       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12886       if (gtk_tree_path_is_ancestor (path, anchor_path))
12887         {
12888           gtk_tree_row_reference_free (tree_view->priv->anchor);
12889           tree_view->priv->anchor = NULL;
12890         }
12891       gtk_tree_path_free (anchor_path);
12892     }
12893
12894   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12895
12896   /* Stop a pending double click */
12897   tree_view->priv->last_button_x = -1;
12898   tree_view->priv->last_button_y = -1;
12899
12900   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12901
12902   _gtk_rbtree_remove (node->children);
12903
12904   /* if we change the cursor, we also change the selection,
12905    * so no need to emit selection-changed. */
12906   if (cursor_changed)
12907     gtk_tree_view_real_set_cursor (tree_view, path, TRUE, FALSE);
12908   else if (selection_changed)
12909     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12910
12911   if (animate)
12912     {
12913       GtkStyleContext *context;
12914
12915       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12916
12917       gtk_style_context_save (context);
12918       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12919
12920       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12921                                              node, GTK_STATE_ACTIVE, FALSE);
12922
12923       _gtk_style_context_invalidate_animation_areas (context);
12924       gtk_style_context_restore (context);
12925     }
12926
12927   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12928     {
12929       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12930     }
12931
12932   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12933
12934   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12935     {
12936       /* now that we've collapsed all rows, we want to try to set the prelight
12937        * again. To do this, we fake a motion event and send it to ourselves. */
12938
12939       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12940                                               gdk_device_manager_get_client_pointer (
12941                                                 gdk_display_get_device_manager (
12942                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12943                                               &x, &y, NULL);
12944       if (child == tree_view->priv->bin_window)
12945         {
12946           GdkEventMotion event;
12947           gint child_x, child_y;
12948
12949           gdk_window_get_position (child, &child_x, &child_y);
12950
12951           event.window = tree_view->priv->bin_window;
12952           event.x = x - child_x;
12953           event.y = y - child_y;
12954
12955           /* despite the fact this isn't a real event, I'm almost positive it will
12956            * never trigger a drag event.  maybe_drag is the only function that uses
12957            * more than just event.x and event.y. */
12958           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12959         }
12960     }
12961
12962   return TRUE;
12963 }
12964
12965 /**
12966  * gtk_tree_view_collapse_row:
12967  * @tree_view: a #GtkTreeView
12968  * @path: path to a row in the @tree_view
12969  *
12970  * Collapses a row (hides its child rows, if they exist).
12971  *
12972  * Return value: %TRUE if the row was collapsed.
12973  **/
12974 gboolean
12975 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12976                             GtkTreePath *path)
12977 {
12978   GtkRBTree *tree;
12979   GtkRBNode *node;
12980
12981   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12982   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12983   g_return_val_if_fail (path != NULL, FALSE);
12984
12985   if (_gtk_tree_view_find_node (tree_view,
12986                                 path,
12987                                 &tree,
12988                                 &node))
12989     return FALSE;
12990
12991   if (tree == NULL || node->children == NULL)
12992     return FALSE;
12993
12994   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12995 }
12996
12997 static void
12998 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12999                                         GtkRBTree              *tree,
13000                                         GtkTreePath            *path,
13001                                         GtkTreeViewMappingFunc  func,
13002                                         gpointer                user_data)
13003 {
13004   GtkRBNode *node;
13005
13006   if (tree == NULL || tree->root == NULL)
13007     return;
13008
13009   node = _gtk_rbtree_first (tree);
13010
13011   while (node)
13012     {
13013       if (node->children)
13014         {
13015           (* func) (tree_view, path, user_data);
13016           gtk_tree_path_down (path);
13017           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13018           gtk_tree_path_up (path);
13019         }
13020       gtk_tree_path_next (path);
13021       node = _gtk_rbtree_next (tree, node);
13022     }
13023 }
13024
13025 /**
13026  * gtk_tree_view_map_expanded_rows:
13027  * @tree_view: A #GtkTreeView
13028  * @func: (scope call): A function to be called
13029  * @data: User data to be passed to the function.
13030  *
13031  * Calls @func on all expanded rows.
13032  **/
13033 void
13034 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13035                                  GtkTreeViewMappingFunc  func,
13036                                  gpointer                user_data)
13037 {
13038   GtkTreePath *path;
13039
13040   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13041   g_return_if_fail (func != NULL);
13042
13043   path = gtk_tree_path_new_first ();
13044
13045   gtk_tree_view_map_expanded_rows_helper (tree_view,
13046                                           tree_view->priv->tree,
13047                                           path, func, user_data);
13048
13049   gtk_tree_path_free (path);
13050 }
13051
13052 /**
13053  * gtk_tree_view_row_expanded:
13054  * @tree_view: A #GtkTreeView.
13055  * @path: A #GtkTreePath to test expansion state.
13056  *
13057  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13058  *
13059  * Return value: %TRUE if #path is expanded.
13060  **/
13061 gboolean
13062 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13063                             GtkTreePath *path)
13064 {
13065   GtkRBTree *tree;
13066   GtkRBNode *node;
13067
13068   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13069   g_return_val_if_fail (path != NULL, FALSE);
13070
13071   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13072
13073   if (node == NULL)
13074     return FALSE;
13075
13076   return (node->children != NULL);
13077 }
13078
13079 /**
13080  * gtk_tree_view_get_reorderable:
13081  * @tree_view: a #GtkTreeView
13082  *
13083  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13084  * gtk_tree_view_set_reorderable().
13085  *
13086  * Return value: %TRUE if the tree can be reordered.
13087  **/
13088 gboolean
13089 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13090 {
13091   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13092
13093   return tree_view->priv->reorderable;
13094 }
13095
13096 /**
13097  * gtk_tree_view_set_reorderable:
13098  * @tree_view: A #GtkTreeView.
13099  * @reorderable: %TRUE, if the tree can be reordered.
13100  *
13101  * This function is a convenience function to allow you to reorder
13102  * models that support the #GtkTreeDragSourceIface and the
13103  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13104  * these.  If @reorderable is %TRUE, then the user can reorder the
13105  * model by dragging and dropping rows. The developer can listen to
13106  * these changes by connecting to the model's row_inserted and
13107  * row_deleted signals. The reordering is implemented by setting up
13108  * the tree view as a drag source and destination. Therefore, drag and
13109  * drop can not be used in a reorderable view for any other purpose.
13110  *
13111  * This function does not give you any degree of control over the order -- any
13112  * reordering is allowed.  If more control is needed, you should probably
13113  * handle drag and drop manually.
13114  **/
13115 void
13116 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13117                                gboolean     reorderable)
13118 {
13119   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13120
13121   reorderable = reorderable != FALSE;
13122
13123   if (tree_view->priv->reorderable == reorderable)
13124     return;
13125
13126   if (reorderable)
13127     {
13128       const GtkTargetEntry row_targets[] = {
13129         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13130       };
13131
13132       gtk_tree_view_enable_model_drag_source (tree_view,
13133                                               GDK_BUTTON1_MASK,
13134                                               row_targets,
13135                                               G_N_ELEMENTS (row_targets),
13136                                               GDK_ACTION_MOVE);
13137       gtk_tree_view_enable_model_drag_dest (tree_view,
13138                                             row_targets,
13139                                             G_N_ELEMENTS (row_targets),
13140                                             GDK_ACTION_MOVE);
13141     }
13142   else
13143     {
13144       gtk_tree_view_unset_rows_drag_source (tree_view);
13145       gtk_tree_view_unset_rows_drag_dest (tree_view);
13146     }
13147
13148   tree_view->priv->reorderable = reorderable;
13149
13150   g_object_notify (G_OBJECT (tree_view), "reorderable");
13151 }
13152
13153 static void
13154 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13155                                GtkTreePath     *path,
13156                                gboolean         clear_and_select,
13157                                gboolean         clamp_node)
13158 {
13159   GtkRBTree *tree = NULL;
13160   GtkRBNode *node = NULL;
13161
13162   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13163     {
13164       GtkTreePath *cursor_path;
13165       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13166       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
13167       gtk_tree_path_free (cursor_path);
13168     }
13169
13170   gtk_tree_row_reference_free (tree_view->priv->cursor);
13171   tree_view->priv->cursor = NULL;
13172
13173   /* One cannot set the cursor on a separator.   Also, if
13174    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13175    * before finding the tree and node belonging to path.  The
13176    * path maps to a non-existing path and we will silently bail out.
13177    * We unset tree and node to avoid further processing.
13178    */
13179   if (!row_is_separator (tree_view, NULL, path)
13180       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
13181     {
13182       tree_view->priv->cursor =
13183           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
13184                                             tree_view->priv->model,
13185                                             path);
13186     }
13187   else
13188     {
13189       tree = NULL;
13190       node = NULL;
13191     }
13192
13193   if (tree != NULL)
13194     {
13195       GtkRBTree *new_tree = NULL;
13196       GtkRBNode *new_node = NULL;
13197
13198       if (clear_and_select && !tree_view->priv->modify_selection_pressed)
13199         {
13200           GtkTreeSelectMode mode = 0;
13201
13202           if (tree_view->priv->extend_selection_pressed)
13203             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13204
13205           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13206                                                     node, tree, path, mode,
13207                                                     FALSE);
13208         }
13209
13210       /* We have to re-find tree and node here again, somebody might have
13211        * cleared the node or the whole tree in the GtkTreeSelection::changed
13212        * callback. If the nodes differ we bail out here.
13213        */
13214       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13215
13216       if (tree != new_tree || node != new_node)
13217         return;
13218
13219       if (clamp_node)
13220         {
13221           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
13222           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13223         }
13224     }
13225
13226   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13227 }
13228
13229 /**
13230  * gtk_tree_view_get_cursor:
13231  * @tree_view: A #GtkTreeView
13232  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13233  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13234  *
13235  * Fills in @path and @focus_column with the current path and focus column.  If
13236  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13237  * currently has focus, then *@focus_column will be %NULL.
13238  *
13239  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13240  * you are done with it.
13241  **/
13242 void
13243 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13244                           GtkTreePath       **path,
13245                           GtkTreeViewColumn **focus_column)
13246 {
13247   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13248
13249   if (path)
13250     {
13251       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13252         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13253       else
13254         *path = NULL;
13255     }
13256
13257   if (focus_column)
13258     {
13259       *focus_column = tree_view->priv->focus_column;
13260     }
13261 }
13262
13263 /**
13264  * gtk_tree_view_set_cursor:
13265  * @tree_view: A #GtkTreeView
13266  * @path: A #GtkTreePath
13267  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13268  * @start_editing: %TRUE if the specified cell should start being edited.
13269  *
13270  * Sets the current keyboard focus to be at @path, and selects it.  This is
13271  * useful when you want to focus the user's attention on a particular row.  If
13272  * @focus_column is not %NULL, then focus is given to the column specified by
13273  * it. Additionally, if @focus_column is specified, and @start_editing is
13274  * %TRUE, then editing should be started in the specified cell.
13275  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13276  * in order to give keyboard focus to the widget.  Please note that editing
13277  * can only happen when the widget is realized.
13278  *
13279  * If @path is invalid for @model, the current cursor (if any) will be unset
13280  * and the function will return without failing.
13281  **/
13282 void
13283 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13284                           GtkTreePath       *path,
13285                           GtkTreeViewColumn *focus_column,
13286                           gboolean           start_editing)
13287 {
13288   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13289                                     NULL, start_editing);
13290 }
13291
13292 /**
13293  * gtk_tree_view_set_cursor_on_cell:
13294  * @tree_view: A #GtkTreeView
13295  * @path: A #GtkTreePath
13296  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13297  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13298  * @start_editing: %TRUE if the specified cell should start being edited.
13299  *
13300  * Sets the current keyboard focus to be at @path, and selects it.  This is
13301  * useful when you want to focus the user's attention on a particular row.  If
13302  * @focus_column is not %NULL, then focus is given to the column specified by
13303  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13304  * contains 2 or more editable or activatable cells, then focus is given to
13305  * the cell specified by @focus_cell. Additionally, if @focus_column is
13306  * specified, and @start_editing is %TRUE, then editing should be started in
13307  * the specified cell.  This function is often followed by
13308  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13309  * widget.  Please note that editing can only happen when the widget is
13310  * realized.
13311  *
13312  * If @path is invalid for @model, the current cursor (if any) will be unset
13313  * and the function will return without failing.
13314  *
13315  * Since: 2.2
13316  **/
13317 void
13318 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13319                                   GtkTreePath       *path,
13320                                   GtkTreeViewColumn *focus_column,
13321                                   GtkCellRenderer   *focus_cell,
13322                                   gboolean           start_editing)
13323 {
13324   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13325   g_return_if_fail (path != NULL);
13326   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13327
13328   if (!tree_view->priv->model)
13329     return;
13330
13331   if (focus_cell)
13332     {
13333       g_return_if_fail (focus_column);
13334       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13335     }
13336
13337   /* cancel the current editing, if it exists */
13338   if (tree_view->priv->edited_column &&
13339       gtk_cell_area_get_edit_widget
13340       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13341     gtk_tree_view_stop_editing (tree_view, TRUE);
13342
13343   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
13344
13345   if (focus_column &&
13346       gtk_tree_view_column_get_visible (focus_column))
13347     {
13348       GList *list;
13349       gboolean column_in_tree = FALSE;
13350
13351       for (list = tree_view->priv->columns; list; list = list->next)
13352         if (list->data == focus_column)
13353           {
13354             column_in_tree = TRUE;
13355             break;
13356           }
13357       g_return_if_fail (column_in_tree);
13358       tree_view->priv->focus_column = focus_column;
13359       if (focus_cell)
13360         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13361       if (start_editing)
13362         gtk_tree_view_start_editing (tree_view, path, TRUE);
13363     }
13364 }
13365
13366 /**
13367  * gtk_tree_view_get_bin_window:
13368  * @tree_view: A #GtkTreeView
13369  *
13370  * Returns the window that @tree_view renders to.
13371  * This is used primarily to compare to <literal>event->window</literal>
13372  * to confirm that the event on @tree_view is on the right window.
13373  *
13374  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13375  *     hasn't been realized yet
13376  **/
13377 GdkWindow *
13378 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13379 {
13380   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13381
13382   return tree_view->priv->bin_window;
13383 }
13384
13385 /**
13386  * gtk_tree_view_get_path_at_pos:
13387  * @tree_view: A #GtkTreeView.
13388  * @x: The x position to be identified (relative to bin_window).
13389  * @y: The y position to be identified (relative to bin_window).
13390  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13391  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13392  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13393  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13394  *
13395  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13396  * (please see gtk_tree_view_get_bin_window()).
13397  * That is, @x and @y are relative to an events coordinates. @x and @y must
13398  * come from an event on the @tree_view only where <literal>event->window ==
13399  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13400  * things like popup menus. If @path is non-%NULL, then it will be filled
13401  * with the #GtkTreePath at that point.  This path should be freed with
13402  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13403  * with the column at that point.  @cell_x and @cell_y return the coordinates
13404  * relative to the cell background (i.e. the @background_area passed to
13405  * gtk_cell_renderer_render()).  This function is only meaningful if
13406  * @tree_view is realized.  Therefore this function will always return %FALSE
13407  * if @tree_view is not realized or does not have a model.
13408  *
13409  * For converting widget coordinates (eg. the ones you get from
13410  * GtkWidget::query-tooltip), please see
13411  * gtk_tree_view_convert_widget_to_bin_window_coords().
13412  *
13413  * Return value: %TRUE if a row exists at that coordinate.
13414  **/
13415 gboolean
13416 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13417                                gint                x,
13418                                gint                y,
13419                                GtkTreePath       **path,
13420                                GtkTreeViewColumn **column,
13421                                gint               *cell_x,
13422                                gint               *cell_y)
13423 {
13424   GtkRBTree *tree;
13425   GtkRBNode *node;
13426   gint y_offset;
13427
13428   g_return_val_if_fail (tree_view != NULL, FALSE);
13429
13430   if (path)
13431     *path = NULL;
13432   if (column)
13433     *column = NULL;
13434
13435   if (tree_view->priv->bin_window == NULL)
13436     return FALSE;
13437
13438   if (tree_view->priv->tree == NULL)
13439     return FALSE;
13440
13441   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13442     return FALSE;
13443
13444   if (x < 0 || y < 0)
13445     return FALSE;
13446
13447   if (column || cell_x)
13448     {
13449       GtkTreeViewColumn *tmp_column;
13450       GtkTreeViewColumn *last_column = NULL;
13451       GList *list;
13452       gint remaining_x = x;
13453       gboolean found = FALSE;
13454       gboolean rtl;
13455       gint width;
13456
13457       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13458       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13459            list;
13460            list = (rtl ? list->prev : list->next))
13461         {
13462           tmp_column = list->data;
13463
13464           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13465             continue;
13466
13467           last_column = tmp_column;
13468           width = gtk_tree_view_column_get_width (tmp_column);
13469           if (remaining_x <= width)
13470             {
13471               found = TRUE;
13472
13473               if (column)
13474                 *column = tmp_column;
13475
13476               if (cell_x)
13477                 *cell_x = remaining_x;
13478
13479               break;
13480             }
13481           remaining_x -= width;
13482         }
13483
13484       /* If found is FALSE and there is a last_column, then it the remainder
13485        * space is in that area
13486        */
13487       if (!found)
13488         {
13489           if (last_column)
13490             {
13491               if (column)
13492                 *column = last_column;
13493
13494               if (cell_x)
13495                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13496             }
13497           else
13498             {
13499               return FALSE;
13500             }
13501         }
13502     }
13503
13504   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13505                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13506                                       &tree, &node);
13507
13508   if (tree == NULL)
13509     return FALSE;
13510
13511   if (cell_y)
13512     *cell_y = y_offset;
13513
13514   if (path)
13515     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13516
13517   return TRUE;
13518 }
13519
13520
13521 static inline gint
13522 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13523                                     GtkRBNode   *node,
13524                                     gint         vertical_separator)
13525 {
13526   int height;
13527
13528   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13529    * i.e. just the cells, no spacing.
13530    *
13531    * The cell area height is at least expander_size - vertical_separator.
13532    * For regular nodes, the height is then at least expander_size. We should
13533    * be able to enforce the expander_size minimum here, because this
13534    * function will not be called for irregular (e.g. separator) rows.
13535    */
13536   height = gtk_tree_view_get_row_height (tree_view, node);
13537   if (height < tree_view->priv->expander_size)
13538     height = tree_view->priv->expander_size;
13539
13540   return height - vertical_separator;
13541 }
13542
13543 static inline gint
13544 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13545                                       GtkRBTree   *tree,
13546                                       GtkRBNode   *node,
13547                                       gint         vertical_separator)
13548 {
13549   int offset;
13550
13551   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13552   offset += vertical_separator / 2;
13553
13554   return offset;
13555 }
13556
13557 /**
13558  * gtk_tree_view_get_cell_area:
13559  * @tree_view: a #GtkTreeView
13560  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13561  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13562  * @rect: (out): rectangle to fill with cell rect
13563  *
13564  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13565  * row specified by @path and the column specified by @column.  If @path is
13566  * %NULL, or points to a path not currently displayed, the @y and @height fields
13567  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13568  * fields will be filled with 0.  The sum of all cell rects does not cover the
13569  * entire tree; there are extra pixels in between rows, for example. The
13570  * returned rectangle is equivalent to the @cell_area passed to
13571  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13572  * realized.
13573  **/
13574 void
13575 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13576                              GtkTreePath        *path,
13577                              GtkTreeViewColumn  *column,
13578                              GdkRectangle       *rect)
13579 {
13580   GtkRBTree *tree = NULL;
13581   GtkRBNode *node = NULL;
13582   gint vertical_separator;
13583   gint horizontal_separator;
13584
13585   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13586   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13587   g_return_if_fail (rect != NULL);
13588   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13589   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13590
13591   gtk_widget_style_get (GTK_WIDGET (tree_view),
13592                         "vertical-separator", &vertical_separator,
13593                         "horizontal-separator", &horizontal_separator,
13594                         NULL);
13595
13596   rect->x = 0;
13597   rect->y = 0;
13598   rect->width = 0;
13599   rect->height = 0;
13600
13601   if (column)
13602     {
13603       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13604       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13605     }
13606
13607   if (path)
13608     {
13609       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13610
13611       /* Get vertical coords */
13612       if ((!ret && tree == NULL) || ret)
13613         return;
13614
13615       if (row_is_separator (tree_view, NULL, path))
13616         {
13617           /* There isn't really a "cell area" for separator, so we
13618            * return the y, height values for background area instead.
13619            */
13620           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13621           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13622         }
13623       else
13624         {
13625           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13626                                                           vertical_separator);
13627           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13628                                                              vertical_separator);
13629         }
13630
13631       if (column &&
13632           gtk_tree_view_is_expander_column (tree_view, column))
13633         {
13634           gint depth = gtk_tree_path_get_depth (path);
13635           gboolean rtl;
13636
13637           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13638
13639           if (!rtl)
13640             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13641           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13642
13643           if (gtk_tree_view_draw_expanders (tree_view))
13644             {
13645               if (!rtl)
13646                 rect->x += depth * tree_view->priv->expander_size;
13647               rect->width -= depth * tree_view->priv->expander_size;
13648             }
13649
13650           rect->width = MAX (rect->width, 0);
13651         }
13652     }
13653 }
13654
13655 static inline gint
13656 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13657                               GtkRBNode   *node)
13658 {
13659   int height;
13660
13661   /* The "background" areas of all rows/cells add up to cover the entire tree.
13662    * The background includes all inter-row and inter-cell spacing.
13663    *
13664    * If the row pointed at by node does not have a height set, we default
13665    * to expander_size, which is the minimum height for regular nodes.
13666    * Non-regular nodes (e.g. separators) can have a height set smaller
13667    * than expander_size and should not be overruled here.
13668    */
13669   height = GTK_RBNODE_GET_HEIGHT (node);
13670   if (height <= 0)
13671     height = tree_view->priv->expander_size;
13672
13673   return height;
13674 }
13675
13676 static inline gint
13677 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13678                                 GtkRBTree   *tree,
13679                                 GtkRBNode   *node)
13680 {
13681   int offset;
13682
13683   offset = _gtk_rbtree_node_find_offset (tree, node);
13684
13685   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13686 }
13687
13688 /**
13689  * gtk_tree_view_get_background_area:
13690  * @tree_view: a #GtkTreeView
13691  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13692  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13693  * @rect: (out): rectangle to fill with cell background rect
13694  *
13695  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13696  * row specified by @path and the column specified by @column.  If @path is
13697  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13698  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13699  * fields will be filled with 0.  The returned rectangle is equivalent to the
13700  * @background_area passed to gtk_cell_renderer_render().  These background
13701  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13702  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13703  * itself, excluding surrounding borders and the tree expander area.
13704  *
13705  **/
13706 void
13707 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13708                                    GtkTreePath        *path,
13709                                    GtkTreeViewColumn  *column,
13710                                    GdkRectangle       *rect)
13711 {
13712   GtkRBTree *tree = NULL;
13713   GtkRBNode *node = NULL;
13714
13715   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13716   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13717   g_return_if_fail (rect != NULL);
13718
13719   rect->x = 0;
13720   rect->y = 0;
13721   rect->width = 0;
13722   rect->height = 0;
13723
13724   if (path)
13725     {
13726       /* Get vertical coords */
13727
13728       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13729           tree == NULL)
13730         return;
13731
13732       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13733       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13734     }
13735
13736   if (column)
13737     {
13738       gint x2 = 0;
13739
13740       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13741       rect->width = x2 - rect->x;
13742     }
13743 }
13744
13745 /**
13746  * gtk_tree_view_get_visible_rect:
13747  * @tree_view: a #GtkTreeView
13748  * @visible_rect: (out): rectangle to fill
13749  *
13750  * Fills @visible_rect with the currently-visible region of the
13751  * buffer, in tree coordinates. Convert to bin_window coordinates with
13752  * gtk_tree_view_convert_tree_to_bin_window_coords().
13753  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13754  * scrollable area of the tree.
13755  **/
13756 void
13757 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13758                                 GdkRectangle *visible_rect)
13759 {
13760   GtkAllocation allocation;
13761   GtkWidget *widget;
13762
13763   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13764
13765   widget = GTK_WIDGET (tree_view);
13766
13767   if (visible_rect)
13768     {
13769       gtk_widget_get_allocation (widget, &allocation);
13770       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13771       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13772       visible_rect->width = allocation.width;
13773       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13774     }
13775 }
13776
13777 /**
13778  * gtk_tree_view_convert_widget_to_tree_coords:
13779  * @tree_view: a #GtkTreeView
13780  * @wx: X coordinate relative to the widget
13781  * @wy: Y coordinate relative to the widget
13782  * @tx: (out): return location for tree X coordinate
13783  * @ty: (out): return location for tree Y coordinate
13784  *
13785  * Converts widget coordinates to coordinates for the
13786  * tree (the full scrollable area of the tree).
13787  *
13788  * Since: 2.12
13789  **/
13790 void
13791 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13792                                              gint         wx,
13793                                              gint         wy,
13794                                              gint        *tx,
13795                                              gint        *ty)
13796 {
13797   gint x, y;
13798
13799   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13800
13801   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13802                                                      wx, wy,
13803                                                      &x, &y);
13804   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13805                                                    x, y,
13806                                                    tx, ty);
13807 }
13808
13809 /**
13810  * gtk_tree_view_convert_tree_to_widget_coords:
13811  * @tree_view: a #GtkTreeView
13812  * @tx: X coordinate relative to the tree
13813  * @ty: Y coordinate relative to the tree
13814  * @wx: (out): return location for widget X coordinate
13815  * @wy: (out): return location for widget Y coordinate
13816  *
13817  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13818  * to widget coordinates.
13819  *
13820  * Since: 2.12
13821  **/
13822 void
13823 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13824                                              gint         tx,
13825                                              gint         ty,
13826                                              gint        *wx,
13827                                              gint        *wy)
13828 {
13829   gint x, y;
13830
13831   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13832
13833   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13834                                                    tx, ty,
13835                                                    &x, &y);
13836   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13837                                                      x, y,
13838                                                      wx, wy);
13839 }
13840
13841 /**
13842  * gtk_tree_view_convert_widget_to_bin_window_coords:
13843  * @tree_view: a #GtkTreeView
13844  * @wx: X coordinate relative to the widget
13845  * @wy: Y coordinate relative to the widget
13846  * @bx: (out): return location for bin_window X coordinate
13847  * @by: (out): return location for bin_window Y coordinate
13848  *
13849  * Converts widget coordinates to coordinates for the bin_window
13850  * (see gtk_tree_view_get_bin_window()).
13851  *
13852  * Since: 2.12
13853  **/
13854 void
13855 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13856                                                    gint         wx,
13857                                                    gint         wy,
13858                                                    gint        *bx,
13859                                                    gint        *by)
13860 {
13861   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13862
13863   if (bx)
13864     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13865   if (by)
13866     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13867 }
13868
13869 /**
13870  * gtk_tree_view_convert_bin_window_to_widget_coords:
13871  * @tree_view: a #GtkTreeView
13872  * @bx: bin_window X coordinate
13873  * @by: bin_window Y coordinate
13874  * @wx: (out): return location for widget X coordinate
13875  * @wy: (out): return location for widget Y coordinate
13876  *
13877  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13878  * to widget relative coordinates.
13879  *
13880  * Since: 2.12
13881  **/
13882 void
13883 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13884                                                    gint         bx,
13885                                                    gint         by,
13886                                                    gint        *wx,
13887                                                    gint        *wy)
13888 {
13889   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13890
13891   if (wx)
13892     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13893   if (wy)
13894     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13895 }
13896
13897 /**
13898  * gtk_tree_view_convert_tree_to_bin_window_coords:
13899  * @tree_view: a #GtkTreeView
13900  * @tx: tree X coordinate
13901  * @ty: tree Y coordinate
13902  * @bx: (out): return location for X coordinate relative to bin_window
13903  * @by: (out): return location for Y coordinate relative to bin_window
13904  *
13905  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13906  * to bin_window coordinates.
13907  *
13908  * Since: 2.12
13909  **/
13910 void
13911 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13912                                                  gint         tx,
13913                                                  gint         ty,
13914                                                  gint        *bx,
13915                                                  gint        *by)
13916 {
13917   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13918
13919   if (bx)
13920     *bx = tx;
13921   if (by)
13922     *by = ty - tree_view->priv->dy;
13923 }
13924
13925 /**
13926  * gtk_tree_view_convert_bin_window_to_tree_coords:
13927  * @tree_view: a #GtkTreeView
13928  * @bx: X coordinate relative to bin_window
13929  * @by: Y coordinate relative to bin_window
13930  * @tx: (out): return location for tree X coordinate
13931  * @ty: (out): return location for tree Y coordinate
13932  *
13933  * Converts bin_window coordinates to coordinates for the
13934  * tree (the full scrollable area of the tree).
13935  *
13936  * Since: 2.12
13937  **/
13938 void
13939 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13940                                                  gint         bx,
13941                                                  gint         by,
13942                                                  gint        *tx,
13943                                                  gint        *ty)
13944 {
13945   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13946
13947   if (tx)
13948     *tx = bx;
13949   if (ty)
13950     *ty = by + tree_view->priv->dy;
13951 }
13952
13953
13954
13955 /**
13956  * gtk_tree_view_get_visible_range:
13957  * @tree_view: A #GtkTreeView
13958  * @start_path: (out) (allow-none): Return location for start of region,
13959  *              or %NULL.
13960  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13961  *
13962  * Sets @start_path and @end_path to be the first and last visible path.
13963  * Note that there may be invisible paths in between.
13964  *
13965  * The paths should be freed with gtk_tree_path_free() after use.
13966  *
13967  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13968  *
13969  * Since: 2.8
13970  **/
13971 gboolean
13972 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13973                                  GtkTreePath **start_path,
13974                                  GtkTreePath **end_path)
13975 {
13976   GtkRBTree *tree;
13977   GtkRBNode *node;
13978   gboolean retval;
13979
13980   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13981
13982   if (!tree_view->priv->tree)
13983     return FALSE;
13984
13985   retval = TRUE;
13986
13987   if (start_path)
13988     {
13989       _gtk_rbtree_find_offset (tree_view->priv->tree,
13990                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13991                                &tree, &node);
13992       if (node)
13993         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
13994       else
13995         retval = FALSE;
13996     }
13997
13998   if (end_path)
13999     {
14000       gint y;
14001
14002       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14003         y = tree_view->priv->height - 1;
14004       else
14005         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14006
14007       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14008       if (node)
14009         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14010       else
14011         retval = FALSE;
14012     }
14013
14014   return retval;
14015 }
14016
14017 /**
14018  * gtk_tree_view_is_blank_at_pos:
14019  * @tree_view: A #GtkTreeView
14020  * @x: The x position to be identified (relative to bin_window)
14021  * @y: The y position to be identified (relative to bin_window)
14022  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14023  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14024  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14025  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14026  *
14027  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14028  * cell content nor an expander arrow is drawn at the location. If so, the
14029  * location can be considered as the background. You might wish to take
14030  * special action on clicks on the background, such as clearing a current
14031  * selection, having a custom context menu or starting rubber banding.
14032  *
14033  * The @x and @y coordinate that are provided must be relative to bin_window
14034  * coordinates.  That is, @x and @y must come from an event on @tree_view
14035  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14036  *
14037  * For converting widget coordinates (eg. the ones you get from
14038  * GtkWidget::query-tooltip), please see
14039  * gtk_tree_view_convert_widget_to_bin_window_coords().
14040  *
14041  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14042  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14043  * gtk_tree_view_get_path_at_pos() for more information.
14044  *
14045  * Return value: %TRUE if the area at the given coordinates is blank,
14046  * %FALSE otherwise.
14047  *
14048  * Since: 3.0
14049  */
14050 gboolean
14051 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14052                                gint                x,
14053                                gint                y,
14054                                GtkTreePath       **path,
14055                                GtkTreeViewColumn **column,
14056                                gint               *cell_x,
14057                                gint               *cell_y)
14058 {
14059   GtkRBTree *tree;
14060   GtkRBNode *node;
14061   GtkTreeIter iter;
14062   GtkTreePath *real_path;
14063   GtkTreeViewColumn *real_column;
14064   GdkRectangle cell_area, background_area;
14065
14066   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14067
14068   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14069                                       &real_path, &real_column,
14070                                       cell_x, cell_y))
14071     /* If there's no path here, it is blank */
14072     return TRUE;
14073
14074   if (path)
14075     *path = real_path;
14076
14077   if (column)
14078     *column = real_column;
14079
14080   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14081   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14082
14083   /* Check if there's an expander arrow at (x, y) */
14084   if (real_column == tree_view->priv->expander_column
14085       && gtk_tree_view_draw_expanders (tree_view))
14086     {
14087       gboolean over_arrow;
14088
14089       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14090
14091       if (over_arrow)
14092         {
14093           if (!path)
14094             gtk_tree_path_free (real_path);
14095           return FALSE;
14096         }
14097     }
14098
14099   /* Otherwise, have the column see if there's a cell at (x, y) */
14100   gtk_tree_view_column_cell_set_cell_data (real_column,
14101                                            tree_view->priv->model,
14102                                            &iter,
14103                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14104                                            node->children ? TRUE : FALSE);
14105
14106   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14107                                      &background_area);
14108   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14109                                &cell_area);
14110
14111   if (!path)
14112     gtk_tree_path_free (real_path);
14113
14114   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14115                                                 &cell_area,
14116                                                 &background_area,
14117                                                 x, y);
14118 }
14119
14120 static void
14121 unset_reorderable (GtkTreeView *tree_view)
14122 {
14123   if (tree_view->priv->reorderable)
14124     {
14125       tree_view->priv->reorderable = FALSE;
14126       g_object_notify (G_OBJECT (tree_view), "reorderable");
14127     }
14128 }
14129
14130 /**
14131  * gtk_tree_view_enable_model_drag_source:
14132  * @tree_view: a #GtkTreeView
14133  * @start_button_mask: Mask of allowed buttons to start drag
14134  * @targets: (array length=n_targets): the table of targets that the drag will support
14135  * @n_targets: the number of items in @targets
14136  * @actions: the bitmask of possible actions for a drag from this
14137  *    widget
14138  *
14139  * Turns @tree_view into a drag source for automatic DND. Calling this
14140  * method sets #GtkTreeView:reorderable to %FALSE.
14141  **/
14142 void
14143 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14144                                         GdkModifierType           start_button_mask,
14145                                         const GtkTargetEntry     *targets,
14146                                         gint                      n_targets,
14147                                         GdkDragAction             actions)
14148 {
14149   TreeViewDragInfo *di;
14150
14151   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14152
14153   gtk_drag_source_set (GTK_WIDGET (tree_view),
14154                        0,
14155                        targets,
14156                        n_targets,
14157                        actions);
14158
14159   di = ensure_info (tree_view);
14160
14161   di->start_button_mask = start_button_mask;
14162   di->source_actions = actions;
14163   di->source_set = TRUE;
14164
14165   unset_reorderable (tree_view);
14166 }
14167
14168 /**
14169  * gtk_tree_view_enable_model_drag_dest:
14170  * @tree_view: a #GtkTreeView
14171  * @targets: (array length=n_targets): the table of targets that
14172  *           the drag will support
14173  * @n_targets: the number of items in @targets
14174  * @actions: the bitmask of possible actions for a drag from this
14175  *    widget
14176  *
14177  * Turns @tree_view into a drop destination for automatic DND. Calling
14178  * this method sets #GtkTreeView:reorderable to %FALSE.
14179  **/
14180 void
14181 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14182                                       const GtkTargetEntry     *targets,
14183                                       gint                      n_targets,
14184                                       GdkDragAction             actions)
14185 {
14186   TreeViewDragInfo *di;
14187
14188   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14189
14190   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14191                      0,
14192                      targets,
14193                      n_targets,
14194                      actions);
14195
14196   di = ensure_info (tree_view);
14197   di->dest_set = TRUE;
14198
14199   unset_reorderable (tree_view);
14200 }
14201
14202 /**
14203  * gtk_tree_view_unset_rows_drag_source:
14204  * @tree_view: a #GtkTreeView
14205  *
14206  * Undoes the effect of
14207  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14208  * #GtkTreeView:reorderable to %FALSE.
14209  **/
14210 void
14211 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14212 {
14213   TreeViewDragInfo *di;
14214
14215   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14216
14217   di = get_info (tree_view);
14218
14219   if (di)
14220     {
14221       if (di->source_set)
14222         {
14223           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14224           di->source_set = FALSE;
14225         }
14226
14227       if (!di->dest_set && !di->source_set)
14228         remove_info (tree_view);
14229     }
14230
14231   unset_reorderable (tree_view);
14232 }
14233
14234 /**
14235  * gtk_tree_view_unset_rows_drag_dest:
14236  * @tree_view: a #GtkTreeView
14237  *
14238  * Undoes the effect of
14239  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14240  * #GtkTreeView:reorderable to %FALSE.
14241  **/
14242 void
14243 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14244 {
14245   TreeViewDragInfo *di;
14246
14247   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14248
14249   di = get_info (tree_view);
14250
14251   if (di)
14252     {
14253       if (di->dest_set)
14254         {
14255           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14256           di->dest_set = FALSE;
14257         }
14258
14259       if (!di->dest_set && !di->source_set)
14260         remove_info (tree_view);
14261     }
14262
14263   unset_reorderable (tree_view);
14264 }
14265
14266 /**
14267  * gtk_tree_view_set_drag_dest_row:
14268  * @tree_view: a #GtkTreeView
14269  * @path: (allow-none): The path of the row to highlight, or %NULL
14270  * @pos: Specifies whether to drop before, after or into the row
14271  *
14272  * Sets the row that is highlighted for feedback.
14273  * If @path is %NULL, an existing highlight is removed.
14274  */
14275 void
14276 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14277                                  GtkTreePath            *path,
14278                                  GtkTreeViewDropPosition pos)
14279 {
14280   GtkTreePath *current_dest;
14281
14282   /* Note; this function is exported to allow a custom DND
14283    * implementation, so it can't touch TreeViewDragInfo
14284    */
14285
14286   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14287
14288   current_dest = NULL;
14289
14290   if (tree_view->priv->drag_dest_row)
14291     {
14292       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14293       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14294     }
14295
14296   /* special case a drop on an empty model */
14297   tree_view->priv->empty_view_drop = 0;
14298
14299   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14300       && gtk_tree_path_get_depth (path) == 1
14301       && gtk_tree_path_get_indices (path)[0] == 0)
14302     {
14303       gint n_children;
14304
14305       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14306                                                    NULL);
14307
14308       if (!n_children)
14309         tree_view->priv->empty_view_drop = 1;
14310     }
14311
14312   tree_view->priv->drag_dest_pos = pos;
14313
14314   if (path)
14315     {
14316       tree_view->priv->drag_dest_row =
14317         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14318       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14319     }
14320   else
14321     tree_view->priv->drag_dest_row = NULL;
14322
14323   if (current_dest)
14324     {
14325       GtkRBTree *tree, *new_tree;
14326       GtkRBNode *node, *new_node;
14327
14328       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14329       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14330
14331       if (tree && node)
14332         {
14333           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14334           if (new_tree && new_node)
14335             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14336
14337           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14338           if (new_tree && new_node)
14339             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14340         }
14341       gtk_tree_path_free (current_dest);
14342     }
14343 }
14344
14345 /**
14346  * gtk_tree_view_get_drag_dest_row:
14347  * @tree_view: a #GtkTreeView
14348  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14349  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14350  *
14351  * Gets information about the row that is highlighted for feedback.
14352  **/
14353 void
14354 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14355                                  GtkTreePath             **path,
14356                                  GtkTreeViewDropPosition  *pos)
14357 {
14358   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14359
14360   if (path)
14361     {
14362       if (tree_view->priv->drag_dest_row)
14363         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14364       else
14365         {
14366           if (tree_view->priv->empty_view_drop)
14367             *path = gtk_tree_path_new_from_indices (0, -1);
14368           else
14369             *path = NULL;
14370         }
14371     }
14372
14373   if (pos)
14374     *pos = tree_view->priv->drag_dest_pos;
14375 }
14376
14377 /**
14378  * gtk_tree_view_get_dest_row_at_pos:
14379  * @tree_view: a #GtkTreeView
14380  * @drag_x: the position to determine the destination row for
14381  * @drag_y: the position to determine the destination row for
14382  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14383  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14384  *
14385  * Determines the destination row for a given position.  @drag_x and
14386  * @drag_y are expected to be in widget coordinates.  This function is only
14387  * meaningful if @tree_view is realized.  Therefore this function will always
14388  * return %FALSE if @tree_view is not realized or does not have a model.
14389  *
14390  * Return value: whether there is a row at the given position, %TRUE if this
14391  * is indeed the case.
14392  **/
14393 gboolean
14394 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14395                                    gint                     drag_x,
14396                                    gint                     drag_y,
14397                                    GtkTreePath            **path,
14398                                    GtkTreeViewDropPosition *pos)
14399 {
14400   gint cell_y;
14401   gint bin_x, bin_y;
14402   gdouble offset_into_row;
14403   gdouble third;
14404   GdkRectangle cell;
14405   GtkTreeViewColumn *column = NULL;
14406   GtkTreePath *tmp_path = NULL;
14407
14408   /* Note; this function is exported to allow a custom DND
14409    * implementation, so it can't touch TreeViewDragInfo
14410    */
14411
14412   g_return_val_if_fail (tree_view != NULL, FALSE);
14413   g_return_val_if_fail (drag_x >= 0, FALSE);
14414   g_return_val_if_fail (drag_y >= 0, FALSE);
14415
14416   if (path)
14417     *path = NULL;
14418
14419   if (tree_view->priv->bin_window == NULL)
14420     return FALSE;
14421
14422   if (tree_view->priv->tree == NULL)
14423     return FALSE;
14424
14425   /* If in the top third of a row, we drop before that row; if
14426    * in the bottom third, drop after that row; if in the middle,
14427    * and the row has children, drop into the row.
14428    */
14429   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14430                                                      &bin_x, &bin_y);
14431
14432   if (!gtk_tree_view_get_path_at_pos (tree_view,
14433                                       bin_x,
14434                                       bin_y,
14435                                       &tmp_path,
14436                                       &column,
14437                                       NULL,
14438                                       &cell_y))
14439     return FALSE;
14440
14441   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14442                                      &cell);
14443
14444   offset_into_row = cell_y;
14445
14446   if (path)
14447     *path = tmp_path;
14448   else
14449     gtk_tree_path_free (tmp_path);
14450
14451   tmp_path = NULL;
14452
14453   third = cell.height / 3.0;
14454
14455   if (pos)
14456     {
14457       if (offset_into_row < third)
14458         {
14459           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14460         }
14461       else if (offset_into_row < (cell.height / 2.0))
14462         {
14463           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14464         }
14465       else if (offset_into_row < third * 2.0)
14466         {
14467           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14468         }
14469       else
14470         {
14471           *pos = GTK_TREE_VIEW_DROP_AFTER;
14472         }
14473     }
14474
14475   return TRUE;
14476 }
14477
14478
14479
14480 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14481 /**
14482  * gtk_tree_view_create_row_drag_icon:
14483  * @tree_view: a #GtkTreeView
14484  * @path: a #GtkTreePath in @tree_view
14485  *
14486  * Creates a #cairo_surface_t representation of the row at @path.
14487  * This image is used for a drag icon.
14488  *
14489  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14490  **/
14491 cairo_surface_t *
14492 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14493                                     GtkTreePath  *path)
14494 {
14495   GtkTreeIter   iter;
14496   GtkRBTree    *tree;
14497   GtkRBNode    *node;
14498   GtkStyleContext *context;
14499   GtkStateFlags state;
14500   gint cell_offset;
14501   GList *list;
14502   GdkRectangle background_area;
14503   GtkWidget *widget;
14504   gint depth;
14505   /* start drawing inside the black outline */
14506   gint x = 1, y = 1;
14507   cairo_surface_t *surface;
14508   gint bin_window_width;
14509   gboolean is_separator = FALSE;
14510   gboolean rtl, allow_rules;
14511   cairo_t *cr;
14512
14513   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14514   g_return_val_if_fail (path != NULL, NULL);
14515
14516   widget = GTK_WIDGET (tree_view);
14517
14518   if (!gtk_widget_get_realized (widget))
14519     return NULL;
14520
14521   depth = gtk_tree_path_get_depth (path);
14522
14523   _gtk_tree_view_find_node (tree_view,
14524                             path,
14525                             &tree,
14526                             &node);
14527
14528   if (tree == NULL)
14529     return NULL;
14530
14531   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14532                                 &iter,
14533                                 path))
14534     return NULL;
14535
14536   context = gtk_widget_get_style_context (widget);
14537
14538   gtk_style_context_save (context);
14539
14540   state = gtk_widget_get_state_flags (widget);
14541   gtk_style_context_set_state (context, state);
14542
14543   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14544   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14545
14546   gtk_widget_style_get (widget,
14547                         "allow-rules", &allow_rules,
14548                         NULL);
14549
14550   if (allow_rules && tree_view->priv->has_rules)
14551     {
14552       GtkRegionFlags row_flags;
14553
14554       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14555         row_flags = GTK_REGION_ODD;
14556       else
14557         row_flags = GTK_REGION_EVEN;
14558
14559       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14560     }
14561
14562   is_separator = row_is_separator (tree_view, &iter, NULL);
14563
14564   cell_offset = x;
14565
14566   background_area.y = y;
14567   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14568
14569   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14570
14571   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14572                                                CAIRO_CONTENT_COLOR,
14573                                                bin_window_width + 2,
14574                                                background_area.height + 2);
14575
14576   cr = cairo_create (surface);
14577
14578   gtk_render_background (context, cr, 0, 0,
14579                          bin_window_width + 2,
14580                          background_area.height + 2);
14581
14582   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14583
14584   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14585       list;
14586       list = (rtl ? list->prev : list->next))
14587     {
14588       GtkTreeViewColumn *column = list->data;
14589       GdkRectangle cell_area;
14590       gint vertical_separator;
14591
14592       if (!gtk_tree_view_column_get_visible (column))
14593         continue;
14594
14595       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14596                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14597                                                node->children?TRUE:FALSE);
14598
14599       background_area.x = cell_offset;
14600       background_area.width = gtk_tree_view_column_get_width (column);
14601
14602       gtk_widget_style_get (widget,
14603                             "vertical-separator", &vertical_separator,
14604                             NULL);
14605
14606       cell_area = background_area;
14607
14608       cell_area.y += vertical_separator / 2;
14609       cell_area.height -= vertical_separator;
14610
14611       if (gtk_tree_view_is_expander_column (tree_view, column))
14612         {
14613           if (!rtl)
14614             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14615           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14616
14617           if (gtk_tree_view_draw_expanders (tree_view))
14618             {
14619               if (!rtl)
14620                 cell_area.x += depth * tree_view->priv->expander_size;
14621               cell_area.width -= depth * tree_view->priv->expander_size;
14622             }
14623         }
14624
14625       if (gtk_tree_view_column_cell_is_visible (column))
14626         {
14627           if (is_separator)
14628             {
14629               gtk_style_context_save (context);
14630               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14631
14632               gtk_render_line (context, cr,
14633                                cell_area.x,
14634                                cell_area.y + cell_area.height / 2,
14635                                cell_area.x + cell_area.width,
14636                                cell_area.y + cell_area.height / 2);
14637
14638               gtk_style_context_restore (context);
14639             }
14640           else
14641             {
14642               _gtk_tree_view_column_cell_render (column,
14643                                                  cr,
14644                                                  &background_area,
14645                                                  &cell_area,
14646                                                  0, FALSE);
14647             }
14648         }
14649       cell_offset += gtk_tree_view_column_get_width (column);
14650     }
14651
14652   cairo_set_source_rgb (cr, 0, 0, 0);
14653   cairo_rectangle (cr,
14654                    0.5, 0.5,
14655                    bin_window_width + 1,
14656                    background_area.height + 1);
14657   cairo_set_line_width (cr, 1.0);
14658   cairo_stroke (cr);
14659
14660   cairo_destroy (cr);
14661
14662   cairo_surface_set_device_offset (surface, 2, 2);
14663
14664   gtk_style_context_restore (context);
14665
14666   return surface;
14667 }
14668
14669
14670 /**
14671  * gtk_tree_view_set_destroy_count_func:
14672  * @tree_view: A #GtkTreeView
14673  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14674  * @data: (allow-none): User data to be passed to @func, or %NULL
14675  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14676  *
14677  * This function should almost never be used.  It is meant for private use by
14678  * ATK for determining the number of visible children that are removed when the
14679  * user collapses a row, or a row is deleted.
14680  **/
14681 void
14682 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14683                                       GtkTreeDestroyCountFunc  func,
14684                                       gpointer                 data,
14685                                       GDestroyNotify           destroy)
14686 {
14687   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14688
14689   if (tree_view->priv->destroy_count_destroy)
14690     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14691
14692   tree_view->priv->destroy_count_func = func;
14693   tree_view->priv->destroy_count_data = data;
14694   tree_view->priv->destroy_count_destroy = destroy;
14695 }
14696
14697
14698 /*
14699  * Interactive search
14700  */
14701
14702 /**
14703  * gtk_tree_view_set_enable_search:
14704  * @tree_view: A #GtkTreeView
14705  * @enable_search: %TRUE, if the user can search interactively
14706  *
14707  * If @enable_search is set, then the user can type in text to search through
14708  * the tree interactively (this is sometimes called "typeahead find").
14709  *
14710  * Note that even if this is %FALSE, the user can still initiate a search
14711  * using the "start-interactive-search" key binding.
14712  */
14713 void
14714 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14715                                  gboolean     enable_search)
14716 {
14717   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14718
14719   enable_search = !!enable_search;
14720
14721   if (tree_view->priv->enable_search != enable_search)
14722     {
14723        tree_view->priv->enable_search = enable_search;
14724        g_object_notify (G_OBJECT (tree_view), "enable-search");
14725     }
14726 }
14727
14728 /**
14729  * gtk_tree_view_get_enable_search:
14730  * @tree_view: A #GtkTreeView
14731  *
14732  * Returns whether or not the tree allows to start interactive searching
14733  * by typing in text.
14734  *
14735  * Return value: whether or not to let the user search interactively
14736  */
14737 gboolean
14738 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14739 {
14740   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14741
14742   return tree_view->priv->enable_search;
14743 }
14744
14745
14746 /**
14747  * gtk_tree_view_get_search_column:
14748  * @tree_view: A #GtkTreeView
14749  *
14750  * Gets the column searched on by the interactive search code.
14751  *
14752  * Return value: the column the interactive search code searches in.
14753  */
14754 gint
14755 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14756 {
14757   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14758
14759   return (tree_view->priv->search_column);
14760 }
14761
14762 /**
14763  * gtk_tree_view_set_search_column:
14764  * @tree_view: A #GtkTreeView
14765  * @column: the column of the model to search in, or -1 to disable searching
14766  *
14767  * Sets @column as the column where the interactive search code should
14768  * search in for the current model.
14769  *
14770  * If the search column is set, users can use the "start-interactive-search"
14771  * key binding to bring up search popup. The enable-search property controls
14772  * whether simply typing text will also start an interactive search.
14773  *
14774  * Note that @column refers to a column of the current model. The search
14775  * column is reset to -1 when the model is changed.
14776  */
14777 void
14778 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14779                                  gint         column)
14780 {
14781   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14782   g_return_if_fail (column >= -1);
14783
14784   if (tree_view->priv->search_column == column)
14785     return;
14786
14787   tree_view->priv->search_column = column;
14788   g_object_notify (G_OBJECT (tree_view), "search-column");
14789 }
14790
14791 /**
14792  * gtk_tree_view_get_search_equal_func: (skip)
14793  * @tree_view: A #GtkTreeView
14794  *
14795  * Returns the compare function currently in use.
14796  *
14797  * Return value: the currently used compare function for the search code.
14798  */
14799
14800 GtkTreeViewSearchEqualFunc
14801 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14802 {
14803   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14804
14805   return tree_view->priv->search_equal_func;
14806 }
14807
14808 /**
14809  * gtk_tree_view_set_search_equal_func:
14810  * @tree_view: A #GtkTreeView
14811  * @search_equal_func: the compare function to use during the search
14812  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14813  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14814  *
14815  * Sets the compare function for the interactive search capabilities; note
14816  * that somewhat like strcmp() returning 0 for equality
14817  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14818  **/
14819 void
14820 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14821                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14822                                      gpointer                    search_user_data,
14823                                      GDestroyNotify              search_destroy)
14824 {
14825   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14826   g_return_if_fail (search_equal_func != NULL);
14827
14828   if (tree_view->priv->search_destroy)
14829     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14830
14831   tree_view->priv->search_equal_func = search_equal_func;
14832   tree_view->priv->search_user_data = search_user_data;
14833   tree_view->priv->search_destroy = search_destroy;
14834   if (tree_view->priv->search_equal_func == NULL)
14835     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14836 }
14837
14838 /**
14839  * gtk_tree_view_get_search_entry:
14840  * @tree_view: A #GtkTreeView
14841  *
14842  * Returns the #GtkEntry which is currently in use as interactive search
14843  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14844  * will be returned.
14845  *
14846  * Return value: (transfer none): the entry currently in use as search entry.
14847  *
14848  * Since: 2.10
14849  */
14850 GtkEntry *
14851 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14852 {
14853   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14854
14855   if (tree_view->priv->search_custom_entry_set)
14856     return GTK_ENTRY (tree_view->priv->search_entry);
14857
14858   return NULL;
14859 }
14860
14861 /**
14862  * gtk_tree_view_set_search_entry:
14863  * @tree_view: A #GtkTreeView
14864  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14865  *
14866  * Sets the entry which the interactive search code will use for this
14867  * @tree_view.  This is useful when you want to provide a search entry
14868  * in our interface at all time at a fixed position.  Passing %NULL for
14869  * @entry will make the interactive search code use the built-in popup
14870  * entry again.
14871  *
14872  * Since: 2.10
14873  */
14874 void
14875 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14876                                 GtkEntry    *entry)
14877 {
14878   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14879   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14880
14881   if (tree_view->priv->search_custom_entry_set)
14882     {
14883       if (tree_view->priv->search_entry_changed_id)
14884         {
14885           g_signal_handler_disconnect (tree_view->priv->search_entry,
14886                                        tree_view->priv->search_entry_changed_id);
14887           tree_view->priv->search_entry_changed_id = 0;
14888         }
14889       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14890                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14891                                             tree_view);
14892
14893       g_object_unref (tree_view->priv->search_entry);
14894     }
14895   else if (tree_view->priv->search_window)
14896     {
14897       gtk_widget_destroy (tree_view->priv->search_window);
14898
14899       tree_view->priv->search_window = NULL;
14900     }
14901
14902   if (entry)
14903     {
14904       tree_view->priv->search_entry = g_object_ref (entry);
14905       tree_view->priv->search_custom_entry_set = TRUE;
14906
14907       if (tree_view->priv->search_entry_changed_id == 0)
14908         {
14909           tree_view->priv->search_entry_changed_id =
14910             g_signal_connect (tree_view->priv->search_entry, "changed",
14911                               G_CALLBACK (gtk_tree_view_search_init),
14912                               tree_view);
14913         }
14914
14915         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14916                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14917                           tree_view);
14918
14919         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14920     }
14921   else
14922     {
14923       tree_view->priv->search_entry = NULL;
14924       tree_view->priv->search_custom_entry_set = FALSE;
14925     }
14926 }
14927
14928 /**
14929  * gtk_tree_view_set_search_position_func:
14930  * @tree_view: A #GtkTreeView
14931  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14932  *    to use the default search position function
14933  * @data: (allow-none): user data to pass to @func, or %NULL
14934  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14935  *
14936  * Sets the function to use when positioning the search dialog.
14937  *
14938  * Since: 2.10
14939  **/
14940 void
14941 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14942                                         GtkTreeViewSearchPositionFunc  func,
14943                                         gpointer                       user_data,
14944                                         GDestroyNotify                 destroy)
14945 {
14946   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14947
14948   if (tree_view->priv->search_position_destroy)
14949     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14950
14951   tree_view->priv->search_position_func = func;
14952   tree_view->priv->search_position_user_data = user_data;
14953   tree_view->priv->search_position_destroy = destroy;
14954   if (tree_view->priv->search_position_func == NULL)
14955     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14956 }
14957
14958 /**
14959  * gtk_tree_view_get_search_position_func: (skip)
14960  * @tree_view: A #GtkTreeView
14961  *
14962  * Returns the positioning function currently in use.
14963  *
14964  * Return value: the currently used function for positioning the search dialog.
14965  *
14966  * Since: 2.10
14967  */
14968 GtkTreeViewSearchPositionFunc
14969 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14970 {
14971   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14972
14973   return tree_view->priv->search_position_func;
14974 }
14975
14976
14977 static void
14978 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14979                                   GtkTreeView *tree_view,
14980                                   GdkDevice   *device)
14981 {
14982   if (tree_view->priv->disable_popdown)
14983     return;
14984
14985   if (tree_view->priv->search_entry_changed_id)
14986     {
14987       g_signal_handler_disconnect (tree_view->priv->search_entry,
14988                                    tree_view->priv->search_entry_changed_id);
14989       tree_view->priv->search_entry_changed_id = 0;
14990     }
14991   if (tree_view->priv->typeselect_flush_timeout)
14992     {
14993       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14994       tree_view->priv->typeselect_flush_timeout = 0;
14995     }
14996
14997   if (gtk_widget_get_visible (search_dialog))
14998     {
14999       /* send focus-in event */
15000       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15001       gtk_widget_hide (search_dialog);
15002       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15003       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15004     }
15005 }
15006
15007 static void
15008 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15009                                     GtkWidget   *search_dialog,
15010                                     gpointer     user_data)
15011 {
15012   gint x, y;
15013   gint tree_x, tree_y;
15014   gint tree_width, tree_height;
15015   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15016   GdkScreen *screen = gdk_window_get_screen (tree_window);
15017   GtkRequisition requisition;
15018   gint monitor_num;
15019   GdkRectangle monitor;
15020
15021   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15022   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
15023
15024   gtk_widget_realize (search_dialog);
15025
15026   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15027   tree_width = gdk_window_get_width (tree_window);
15028   tree_height = gdk_window_get_height (tree_window);
15029   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15030
15031   if (tree_x + tree_width > gdk_screen_get_width (screen))
15032     x = gdk_screen_get_width (screen) - requisition.width;
15033   else if (tree_x + tree_width - requisition.width < 0)
15034     x = 0;
15035   else
15036     x = tree_x + tree_width - requisition.width;
15037
15038   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15039     y = gdk_screen_get_height (screen) - requisition.height;
15040   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15041     y = 0;
15042   else
15043     y = tree_y + tree_height;
15044
15045   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15046 }
15047
15048 static void
15049 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15050                                       GtkMenu  *menu,
15051                                       gpointer  data)
15052 {
15053   GtkTreeView *tree_view = (GtkTreeView *)data;
15054
15055   tree_view->priv->disable_popdown = 1;
15056   g_signal_connect (menu, "hide",
15057                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15058 }
15059
15060 /* Because we're visible but offscreen, we just set a flag in the preedit
15061  * callback.
15062  */
15063 static void
15064 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15065                                       GtkTreeView  *tree_view)
15066 {
15067   tree_view->priv->imcontext_changed = 1;
15068   if (tree_view->priv->typeselect_flush_timeout)
15069     {
15070       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15071       tree_view->priv->typeselect_flush_timeout =
15072         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15073                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15074                        tree_view);
15075     }
15076
15077 }
15078
15079 static void
15080 gtk_tree_view_search_activate (GtkEntry    *entry,
15081                                GtkTreeView *tree_view)
15082 {
15083   GtkTreePath *path;
15084   GtkRBNode *node;
15085   GtkRBTree *tree;
15086
15087   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15088                                     tree_view,
15089                                     gtk_get_current_event_device ());
15090
15091   /* If we have a row selected and it's the cursor row, we activate
15092    * the row XXX */
15093   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
15094     {
15095       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
15096
15097       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15098
15099       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
15100         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15101
15102       gtk_tree_path_free (path);
15103     }
15104 }
15105
15106 static gboolean
15107 gtk_tree_view_real_search_enable_popdown (gpointer data)
15108 {
15109   GtkTreeView *tree_view = (GtkTreeView *)data;
15110
15111   tree_view->priv->disable_popdown = 0;
15112
15113   return FALSE;
15114 }
15115
15116 static void
15117 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15118                                      gpointer   data)
15119 {
15120   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15121 }
15122
15123 static gboolean
15124 gtk_tree_view_search_delete_event (GtkWidget *widget,
15125                                    GdkEventAny *event,
15126                                    GtkTreeView *tree_view)
15127 {
15128   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15129
15130   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15131
15132   return TRUE;
15133 }
15134
15135 static gboolean
15136 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15137                                          GdkEventButton *event,
15138                                          GtkTreeView *tree_view)
15139 {
15140   GdkDevice *keyb_device;
15141
15142   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15143
15144   keyb_device = gdk_device_get_associated_device (event->device);
15145   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15146
15147   if (event->window == tree_view->priv->bin_window)
15148     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15149
15150   return TRUE;
15151 }
15152
15153 static gboolean
15154 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15155                                    GdkEventScroll *event,
15156                                    GtkTreeView *tree_view)
15157 {
15158   gboolean retval = FALSE;
15159
15160   if (event->direction == GDK_SCROLL_UP)
15161     {
15162       gtk_tree_view_search_move (widget, tree_view, TRUE);
15163       retval = TRUE;
15164     }
15165   else if (event->direction == GDK_SCROLL_DOWN)
15166     {
15167       gtk_tree_view_search_move (widget, tree_view, FALSE);
15168       retval = TRUE;
15169     }
15170
15171   /* renew the flush timeout */
15172   if (retval && tree_view->priv->typeselect_flush_timeout
15173       && !tree_view->priv->search_custom_entry_set)
15174     {
15175       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15176       tree_view->priv->typeselect_flush_timeout =
15177         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15178                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15179                        tree_view);
15180     }
15181
15182   return retval;
15183 }
15184
15185 static gboolean
15186 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15187                                       GdkEventKey *event,
15188                                       GtkTreeView *tree_view)
15189 {
15190   GdkModifierType default_accel;
15191   gboolean        retval = FALSE;
15192
15193   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15194   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15195
15196   /* close window and cancel the search */
15197   if (!tree_view->priv->search_custom_entry_set
15198       && (event->keyval == GDK_KEY_Escape ||
15199           event->keyval == GDK_KEY_Tab ||
15200             event->keyval == GDK_KEY_KP_Tab ||
15201             event->keyval == GDK_KEY_ISO_Left_Tab))
15202     {
15203       gtk_tree_view_search_dialog_hide (widget, tree_view,
15204                                         gdk_event_get_device ((GdkEvent *) event));
15205       return TRUE;
15206     }
15207
15208   default_accel = gtk_widget_get_modifier_mask (widget,
15209                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15210
15211   /* select previous matching iter */
15212   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15213     {
15214       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15215         gtk_widget_error_bell (widget);
15216
15217       retval = TRUE;
15218     }
15219
15220   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15221       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15222     {
15223       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15224         gtk_widget_error_bell (widget);
15225
15226       retval = TRUE;
15227     }
15228
15229   /* select next matching iter */
15230   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15231     {
15232       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15233         gtk_widget_error_bell (widget);
15234
15235       retval = TRUE;
15236     }
15237
15238   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15239       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15240     {
15241       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15242         gtk_widget_error_bell (widget);
15243
15244       retval = TRUE;
15245     }
15246
15247   /* renew the flush timeout */
15248   if (retval && tree_view->priv->typeselect_flush_timeout
15249       && !tree_view->priv->search_custom_entry_set)
15250     {
15251       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15252       tree_view->priv->typeselect_flush_timeout =
15253         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15254                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15255                        tree_view);
15256     }
15257
15258   return retval;
15259 }
15260
15261 /*  this function returns FALSE if there is a search string but
15262  *  nothing was found, and TRUE otherwise.
15263  */
15264 static gboolean
15265 gtk_tree_view_search_move (GtkWidget   *window,
15266                            GtkTreeView *tree_view,
15267                            gboolean     up)
15268 {
15269   gboolean ret;
15270   gint len;
15271   gint count = 0;
15272   const gchar *text;
15273   GtkTreeIter iter;
15274   GtkTreeModel *model;
15275   GtkTreeSelection *selection;
15276
15277   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15278
15279   g_return_val_if_fail (text != NULL, FALSE);
15280
15281   len = strlen (text);
15282
15283   if (up && tree_view->priv->selected_iter == 1)
15284     return strlen (text) < 1;
15285
15286   len = strlen (text);
15287
15288   if (len < 1)
15289     return TRUE;
15290
15291   model = gtk_tree_view_get_model (tree_view);
15292   selection = gtk_tree_view_get_selection (tree_view);
15293
15294   /* search */
15295   gtk_tree_selection_unselect_all (selection);
15296   if (!gtk_tree_model_get_iter_first (model, &iter))
15297     return TRUE;
15298
15299   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15300                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15301
15302   if (ret)
15303     {
15304       /* found */
15305       tree_view->priv->selected_iter += up?(-1):(1);
15306       return TRUE;
15307     }
15308   else
15309     {
15310       /* return to old iter */
15311       count = 0;
15312       gtk_tree_model_get_iter_first (model, &iter);
15313       gtk_tree_view_search_iter (model, selection,
15314                                  &iter, text,
15315                                  &count, tree_view->priv->selected_iter);
15316       return FALSE;
15317     }
15318 }
15319
15320 static gboolean
15321 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15322                                  gint          column,
15323                                  const gchar  *key,
15324                                  GtkTreeIter  *iter,
15325                                  gpointer      search_data)
15326 {
15327   gboolean retval = TRUE;
15328   const gchar *str;
15329   gchar *normalized_string;
15330   gchar *normalized_key;
15331   gchar *case_normalized_string = NULL;
15332   gchar *case_normalized_key = NULL;
15333   GValue value = G_VALUE_INIT;
15334   GValue transformed = G_VALUE_INIT;
15335
15336   gtk_tree_model_get_value (model, iter, column, &value);
15337
15338   g_value_init (&transformed, G_TYPE_STRING);
15339
15340   if (!g_value_transform (&value, &transformed))
15341     {
15342       g_value_unset (&value);
15343       return TRUE;
15344     }
15345
15346   g_value_unset (&value);
15347
15348   str = g_value_get_string (&transformed);
15349   if (!str)
15350     {
15351       g_value_unset (&transformed);
15352       return TRUE;
15353     }
15354
15355   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15356   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15357
15358   if (normalized_string && normalized_key)
15359     {
15360       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15361       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15362
15363       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15364         retval = FALSE;
15365     }
15366
15367   g_value_unset (&transformed);
15368   g_free (normalized_key);
15369   g_free (normalized_string);
15370   g_free (case_normalized_key);
15371   g_free (case_normalized_string);
15372
15373   return retval;
15374 }
15375
15376 static gboolean
15377 gtk_tree_view_search_iter (GtkTreeModel     *model,
15378                            GtkTreeSelection *selection,
15379                            GtkTreeIter      *iter,
15380                            const gchar      *text,
15381                            gint             *count,
15382                            gint              n)
15383 {
15384   GtkRBTree *tree = NULL;
15385   GtkRBNode *node = NULL;
15386   GtkTreePath *path;
15387
15388   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15389
15390   path = gtk_tree_model_get_path (model, iter);
15391   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15392
15393   do
15394     {
15395       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15396         {
15397           (*count)++;
15398           if (*count == n)
15399             {
15400               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15401                                             TRUE, 0.5, 0.0);
15402               gtk_tree_selection_select_iter (selection, iter);
15403               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15404
15405               if (path)
15406                 gtk_tree_path_free (path);
15407
15408               return TRUE;
15409             }
15410         }
15411
15412       if (node->children)
15413         {
15414           gboolean has_child;
15415           GtkTreeIter tmp;
15416
15417           tree = node->children;
15418           node = _gtk_rbtree_first (tree);
15419
15420           tmp = *iter;
15421           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15422           gtk_tree_path_down (path);
15423
15424           /* sanity check */
15425           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15426         }
15427       else
15428         {
15429           gboolean done = FALSE;
15430
15431           do
15432             {
15433               node = _gtk_rbtree_next (tree, node);
15434
15435               if (node)
15436                 {
15437                   gboolean has_next;
15438
15439                   has_next = gtk_tree_model_iter_next (model, iter);
15440
15441                   done = TRUE;
15442                   gtk_tree_path_next (path);
15443
15444                   /* sanity check */
15445                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15446                 }
15447               else
15448                 {
15449                   gboolean has_parent;
15450                   GtkTreeIter tmp_iter = *iter;
15451
15452                   node = tree->parent_node;
15453                   tree = tree->parent_tree;
15454
15455                   if (!tree)
15456                     {
15457                       if (path)
15458                         gtk_tree_path_free (path);
15459
15460                       /* we've run out of tree, done with this func */
15461                       return FALSE;
15462                     }
15463
15464                   has_parent = gtk_tree_model_iter_parent (model,
15465                                                            iter,
15466                                                            &tmp_iter);
15467                   gtk_tree_path_up (path);
15468
15469                   /* sanity check */
15470                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15471                 }
15472             }
15473           while (!done);
15474         }
15475     }
15476   while (1);
15477
15478   return FALSE;
15479 }
15480
15481 static void
15482 gtk_tree_view_search_init (GtkWidget   *entry,
15483                            GtkTreeView *tree_view)
15484 {
15485   gint ret;
15486   gint count = 0;
15487   const gchar *text;
15488   GtkTreeIter iter;
15489   GtkTreeModel *model;
15490   GtkTreeSelection *selection;
15491
15492   g_return_if_fail (GTK_IS_ENTRY (entry));
15493   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15494
15495   text = gtk_entry_get_text (GTK_ENTRY (entry));
15496
15497   model = gtk_tree_view_get_model (tree_view);
15498   selection = gtk_tree_view_get_selection (tree_view);
15499
15500   /* search */
15501   gtk_tree_selection_unselect_all (selection);
15502   if (tree_view->priv->typeselect_flush_timeout
15503       && !tree_view->priv->search_custom_entry_set)
15504     {
15505       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15506       tree_view->priv->typeselect_flush_timeout =
15507         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15508                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15509                        tree_view);
15510     }
15511
15512   if (*text == '\0')
15513     return;
15514
15515   if (!gtk_tree_model_get_iter_first (model, &iter))
15516     return;
15517
15518   ret = gtk_tree_view_search_iter (model, selection,
15519                                    &iter, text,
15520                                    &count, 1);
15521
15522   if (ret)
15523     tree_view->priv->selected_iter = 1;
15524 }
15525
15526 void
15527 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15528                                 GtkTreeViewColumn *column,
15529                                 GtkCellEditable   *cell_editable)
15530 {
15531   if (tree_view->priv->edited_column == NULL)
15532     return;
15533
15534   g_return_if_fail (column == tree_view->priv->edited_column);
15535
15536   tree_view->priv->edited_column = NULL;
15537
15538   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15539     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15540
15541   gtk_container_remove (GTK_CONTAINER (tree_view),
15542                         GTK_WIDGET (cell_editable));
15543
15544   /* FIXME should only redraw a single node */
15545   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15546 }
15547
15548 static gboolean
15549 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15550                              GtkTreePath *cursor_path,
15551                              gboolean     edit_only)
15552 {
15553   GtkTreeIter iter;
15554   GdkRectangle cell_area;
15555   GtkTreeViewColumn *focus_column;
15556   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15557   gint retval = FALSE;
15558   GtkRBTree *cursor_tree;
15559   GtkRBNode *cursor_node;
15560
15561   g_assert (tree_view->priv->focus_column);
15562   focus_column = tree_view->priv->focus_column;
15563
15564   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15565     return FALSE;
15566
15567   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15568       cursor_node == NULL)
15569     return FALSE;
15570
15571   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15572
15573   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15574
15575   gtk_tree_view_column_cell_set_cell_data (focus_column,
15576                                            tree_view->priv->model,
15577                                            &iter,
15578                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15579                                            cursor_node->children ? TRUE : FALSE);
15580   gtk_tree_view_get_cell_area (tree_view,
15581                                cursor_path,
15582                                focus_column,
15583                                &cell_area);
15584
15585   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15586                               _gtk_tree_view_column_get_context (focus_column),
15587                               GTK_WIDGET (tree_view),
15588                               &cell_area,
15589                               flags, edit_only))
15590     retval = TRUE;
15591
15592   return retval;
15593 }
15594
15595 void
15596 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15597                              GtkTreeViewColumn *column,
15598                              GtkTreePath       *path,
15599                              GtkCellEditable   *cell_editable,
15600                              GdkRectangle      *cell_area)
15601 {
15602   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15603   GtkRequisition requisition;
15604
15605   tree_view->priv->edited_column = column;
15606
15607   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15608   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15609
15610   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15611                                  &requisition, NULL);
15612
15613   tree_view->priv->draw_keyfocus = TRUE;
15614
15615   if (requisition.height < cell_area->height)
15616     {
15617       gint diff = cell_area->height - requisition.height;
15618       gtk_tree_view_put (tree_view,
15619                          GTK_WIDGET (cell_editable),
15620                          cell_area->x, cell_area->y + diff/2,
15621                          cell_area->width, requisition.height);
15622     }
15623   else
15624     {
15625       gtk_tree_view_put (tree_view,
15626                          GTK_WIDGET (cell_editable),
15627                          cell_area->x, cell_area->y,
15628                          cell_area->width, cell_area->height);
15629     }
15630 }
15631
15632 static void
15633 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15634                             gboolean     cancel_editing)
15635 {
15636   GtkTreeViewColumn *column;
15637
15638   if (tree_view->priv->edited_column == NULL)
15639     return;
15640
15641   /*
15642    * This is very evil. We need to do this, because
15643    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15644    * later on. If gtk_tree_view_row_changed notices
15645    * tree_view->priv->edited_column != NULL, it'll call
15646    * gtk_tree_view_stop_editing again. Bad things will happen then.
15647    *
15648    * Please read that again if you intend to modify anything here.
15649    */
15650
15651   column = tree_view->priv->edited_column;
15652   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15653   tree_view->priv->edited_column = NULL;
15654 }
15655
15656
15657 /**
15658  * gtk_tree_view_set_hover_selection:
15659  * @tree_view: a #GtkTreeView
15660  * @hover: %TRUE to enable hover selection mode
15661  *
15662  * Enables or disables the hover selection mode of @tree_view.
15663  * Hover selection makes the selected row follow the pointer.
15664  * Currently, this works only for the selection modes
15665  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15666  *
15667  * Since: 2.6
15668  **/
15669 void
15670 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15671                                    gboolean     hover)
15672 {
15673   hover = hover != FALSE;
15674
15675   if (hover != tree_view->priv->hover_selection)
15676     {
15677       tree_view->priv->hover_selection = hover;
15678
15679       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15680     }
15681 }
15682
15683 /**
15684  * gtk_tree_view_get_hover_selection:
15685  * @tree_view: a #GtkTreeView
15686  *
15687  * Returns whether hover selection mode is turned on for @tree_view.
15688  *
15689  * Return value: %TRUE if @tree_view is in hover selection mode
15690  *
15691  * Since: 2.6
15692  **/
15693 gboolean
15694 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15695 {
15696   return tree_view->priv->hover_selection;
15697 }
15698
15699 /**
15700  * gtk_tree_view_set_hover_expand:
15701  * @tree_view: a #GtkTreeView
15702  * @expand: %TRUE to enable hover selection mode
15703  *
15704  * Enables of disables the hover expansion mode of @tree_view.
15705  * Hover expansion makes rows expand or collapse if the pointer
15706  * moves over them.
15707  *
15708  * Since: 2.6
15709  **/
15710 void
15711 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15712                                 gboolean     expand)
15713 {
15714   expand = expand != FALSE;
15715
15716   if (expand != tree_view->priv->hover_expand)
15717     {
15718       tree_view->priv->hover_expand = expand;
15719
15720       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15721     }
15722 }
15723
15724 /**
15725  * gtk_tree_view_get_hover_expand:
15726  * @tree_view: a #GtkTreeView
15727  *
15728  * Returns whether hover expansion mode is turned on for @tree_view.
15729  *
15730  * Return value: %TRUE if @tree_view is in hover expansion mode
15731  *
15732  * Since: 2.6
15733  **/
15734 gboolean
15735 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15736 {
15737   return tree_view->priv->hover_expand;
15738 }
15739
15740 /**
15741  * gtk_tree_view_set_rubber_banding:
15742  * @tree_view: a #GtkTreeView
15743  * @enable: %TRUE to enable rubber banding
15744  *
15745  * Enables or disables rubber banding in @tree_view.  If the selection mode
15746  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15747  * multiple rows by dragging the mouse.
15748  *
15749  * Since: 2.10
15750  **/
15751 void
15752 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15753                                   gboolean     enable)
15754 {
15755   enable = enable != FALSE;
15756
15757   if (enable != tree_view->priv->rubber_banding_enable)
15758     {
15759       tree_view->priv->rubber_banding_enable = enable;
15760
15761       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15762     }
15763 }
15764
15765 /**
15766  * gtk_tree_view_get_rubber_banding:
15767  * @tree_view: a #GtkTreeView
15768  *
15769  * Returns whether rubber banding is turned on for @tree_view.  If the
15770  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15771  * user to select multiple rows by dragging the mouse.
15772  *
15773  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15774  *
15775  * Since: 2.10
15776  **/
15777 gboolean
15778 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15779 {
15780   return tree_view->priv->rubber_banding_enable;
15781 }
15782
15783 /**
15784  * gtk_tree_view_is_rubber_banding_active:
15785  * @tree_view: a #GtkTreeView
15786  *
15787  * Returns whether a rubber banding operation is currently being done
15788  * in @tree_view.
15789  *
15790  * Return value: %TRUE if a rubber banding operation is currently being
15791  * done in @tree_view.
15792  *
15793  * Since: 2.12
15794  **/
15795 gboolean
15796 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15797 {
15798   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15799
15800   if (tree_view->priv->rubber_banding_enable
15801       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15802     return TRUE;
15803
15804   return FALSE;
15805 }
15806
15807 /**
15808  * gtk_tree_view_get_row_separator_func: (skip)
15809  * @tree_view: a #GtkTreeView
15810  *
15811  * Returns the current row separator function.
15812  *
15813  * Return value: the current row separator function.
15814  *
15815  * Since: 2.6
15816  **/
15817 GtkTreeViewRowSeparatorFunc
15818 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15819 {
15820   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15821
15822   return tree_view->priv->row_separator_func;
15823 }
15824
15825 /**
15826  * gtk_tree_view_set_row_separator_func:
15827  * @tree_view: a #GtkTreeView
15828  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15829  * @data: (allow-none): user data to pass to @func, or %NULL
15830  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15831  *
15832  * Sets the row separator function, which is used to determine
15833  * whether a row should be drawn as a separator. If the row separator
15834  * function is %NULL, no separators are drawn. This is the default value.
15835  *
15836  * Since: 2.6
15837  **/
15838 void
15839 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15840                                       GtkTreeViewRowSeparatorFunc  func,
15841                                       gpointer                     data,
15842                                       GDestroyNotify               destroy)
15843 {
15844   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15845
15846   if (tree_view->priv->row_separator_destroy)
15847     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15848
15849   tree_view->priv->row_separator_func = func;
15850   tree_view->priv->row_separator_data = data;
15851   tree_view->priv->row_separator_destroy = destroy;
15852
15853   /* Have the tree recalculate heights */
15854   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15855   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15856 }
15857
15858
15859 static void
15860 gtk_tree_view_grab_notify (GtkWidget *widget,
15861                            gboolean   was_grabbed)
15862 {
15863   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15864
15865   tree_view->priv->in_grab = !was_grabbed;
15866
15867   if (!was_grabbed)
15868     {
15869       tree_view->priv->pressed_button = -1;
15870
15871       if (tree_view->priv->rubber_band_status)
15872         gtk_tree_view_stop_rubber_band (tree_view);
15873     }
15874 }
15875
15876 static void
15877 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15878                                    GtkStateFlags  previous_state)
15879 {
15880   if (gtk_widget_get_realized (widget))
15881     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15882
15883   gtk_widget_queue_draw (widget);
15884 }
15885
15886 /**
15887  * gtk_tree_view_get_grid_lines:
15888  * @tree_view: a #GtkTreeView
15889  *
15890  * Returns which grid lines are enabled in @tree_view.
15891  *
15892  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15893  * are enabled.
15894  *
15895  * Since: 2.10
15896  */
15897 GtkTreeViewGridLines
15898 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15899 {
15900   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15901
15902   return tree_view->priv->grid_lines;
15903 }
15904
15905 /**
15906  * gtk_tree_view_set_grid_lines:
15907  * @tree_view: a #GtkTreeView
15908  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15909  * enable.
15910  *
15911  * Sets which grid lines to draw in @tree_view.
15912  *
15913  * Since: 2.10
15914  */
15915 void
15916 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15917                               GtkTreeViewGridLines   grid_lines)
15918 {
15919   GtkTreeViewPrivate *priv;
15920   GtkWidget *widget;
15921   GtkTreeViewGridLines old_grid_lines;
15922
15923   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15924
15925   priv = tree_view->priv;
15926   widget = GTK_WIDGET (tree_view);
15927
15928   old_grid_lines = priv->grid_lines;
15929   priv->grid_lines = grid_lines;
15930
15931   if (gtk_widget_get_realized (widget))
15932     {
15933       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15934           priv->grid_line_width)
15935         {
15936           priv->grid_line_width = 0;
15937         }
15938
15939       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15940           !priv->grid_line_width)
15941         {
15942           gint8 *dash_list;
15943
15944           gtk_widget_style_get (widget,
15945                                 "grid-line-width", &priv->grid_line_width,
15946                                 "grid-line-pattern", (gchar *)&dash_list,
15947                                 NULL);
15948
15949           if (dash_list)
15950             {
15951               priv->grid_line_dashes[0] = dash_list[0];
15952               if (dash_list[0])
15953                 priv->grid_line_dashes[1] = dash_list[1];
15954
15955               g_free (dash_list);
15956             }
15957           else
15958             {
15959               priv->grid_line_dashes[0] = 1;
15960               priv->grid_line_dashes[1] = 1;
15961             }
15962         }
15963     }
15964
15965   if (old_grid_lines != grid_lines)
15966     {
15967       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15968
15969       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15970     }
15971 }
15972
15973 /**
15974  * gtk_tree_view_get_enable_tree_lines:
15975  * @tree_view: a #GtkTreeView.
15976  *
15977  * Returns whether or not tree lines are drawn in @tree_view.
15978  *
15979  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15980  * otherwise.
15981  *
15982  * Since: 2.10
15983  */
15984 gboolean
15985 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15986 {
15987   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15988
15989   return tree_view->priv->tree_lines_enabled;
15990 }
15991
15992 /**
15993  * gtk_tree_view_set_enable_tree_lines:
15994  * @tree_view: a #GtkTreeView
15995  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15996  *
15997  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15998  * This does not have any visible effects for lists.
15999  *
16000  * Since: 2.10
16001  */
16002 void
16003 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16004                                      gboolean     enabled)
16005 {
16006   GtkTreeViewPrivate *priv;
16007   GtkWidget *widget;
16008   gboolean was_enabled;
16009
16010   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16011
16012   enabled = enabled != FALSE;
16013
16014   priv = tree_view->priv;
16015   widget = GTK_WIDGET (tree_view);
16016
16017   was_enabled = priv->tree_lines_enabled;
16018
16019   priv->tree_lines_enabled = enabled;
16020
16021   if (gtk_widget_get_realized (widget))
16022     {
16023       if (!enabled && priv->tree_line_width)
16024         {
16025           priv->tree_line_width = 0;
16026         }
16027
16028       if (enabled && !priv->tree_line_width)
16029         {
16030           gint8 *dash_list;
16031           gtk_widget_style_get (widget,
16032                                 "tree-line-width", &priv->tree_line_width,
16033                                 "tree-line-pattern", (gchar *)&dash_list,
16034                                 NULL);
16035
16036           if (dash_list)
16037             {
16038               priv->tree_line_dashes[0] = dash_list[0];
16039               if (dash_list[0])
16040                 priv->tree_line_dashes[1] = dash_list[1];
16041
16042               g_free (dash_list);
16043             }
16044           else
16045             {
16046               priv->tree_line_dashes[0] = 1;
16047               priv->tree_line_dashes[1] = 1;
16048             }
16049         }
16050     }
16051
16052   if (was_enabled != enabled)
16053     {
16054       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16055
16056       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16057     }
16058 }
16059
16060
16061 /**
16062  * gtk_tree_view_set_show_expanders:
16063  * @tree_view: a #GtkTreeView
16064  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16065  *
16066  * Sets whether to draw and enable expanders and indent child rows in
16067  * @tree_view.  When disabled there will be no expanders visible in trees
16068  * and there will be no way to expand and collapse rows by default.  Also
16069  * note that hiding the expanders will disable the default indentation.  You
16070  * can set a custom indentation in this case using
16071  * gtk_tree_view_set_level_indentation().
16072  * This does not have any visible effects for lists.
16073  *
16074  * Since: 2.12
16075  */
16076 void
16077 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16078                                   gboolean     enabled)
16079 {
16080   gboolean was_enabled;
16081
16082   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16083
16084   enabled = enabled != FALSE;
16085   was_enabled = tree_view->priv->show_expanders;
16086
16087   tree_view->priv->show_expanders = enabled == TRUE;
16088
16089   if (enabled != was_enabled)
16090     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16091 }
16092
16093 /**
16094  * gtk_tree_view_get_show_expanders:
16095  * @tree_view: a #GtkTreeView.
16096  *
16097  * Returns whether or not expanders are drawn in @tree_view.
16098  *
16099  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16100  * otherwise.
16101  *
16102  * Since: 2.12
16103  */
16104 gboolean
16105 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16106 {
16107   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16108
16109   return tree_view->priv->show_expanders;
16110 }
16111
16112 /**
16113  * gtk_tree_view_set_level_indentation:
16114  * @tree_view: a #GtkTreeView
16115  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16116  *
16117  * Sets the amount of extra indentation for child levels to use in @tree_view
16118  * in addition to the default indentation.  The value should be specified in
16119  * pixels, a value of 0 disables this feature and in this case only the default
16120  * indentation will be used.
16121  * This does not have any visible effects for lists.
16122  *
16123  * Since: 2.12
16124  */
16125 void
16126 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16127                                      gint         indentation)
16128 {
16129   tree_view->priv->level_indentation = indentation;
16130
16131   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16132 }
16133
16134 /**
16135  * gtk_tree_view_get_level_indentation:
16136  * @tree_view: a #GtkTreeView.
16137  *
16138  * Returns the amount, in pixels, of extra indentation for child levels
16139  * in @tree_view.
16140  *
16141  * Return value: the amount of extra indentation for child levels in
16142  * @tree_view.  A return value of 0 means that this feature is disabled.
16143  *
16144  * Since: 2.12
16145  */
16146 gint
16147 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16148 {
16149   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16150
16151   return tree_view->priv->level_indentation;
16152 }
16153
16154 /**
16155  * gtk_tree_view_set_tooltip_row:
16156  * @tree_view: a #GtkTreeView
16157  * @tooltip: a #GtkTooltip
16158  * @path: a #GtkTreePath
16159  *
16160  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16161  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16162  * See also gtk_tooltip_set_tip_area().
16163  *
16164  * Since: 2.12
16165  */
16166 void
16167 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16168                                GtkTooltip  *tooltip,
16169                                GtkTreePath *path)
16170 {
16171   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16172   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16173
16174   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16175 }
16176
16177 /**
16178  * gtk_tree_view_set_tooltip_cell:
16179  * @tree_view: a #GtkTreeView
16180  * @tooltip: a #GtkTooltip
16181  * @path: (allow-none): a #GtkTreePath or %NULL
16182  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16183  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16184  *
16185  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16186  * in common.  For example if @path is %NULL and @column is set, the tip
16187  * area will be set to the full area covered by @column.  See also
16188  * gtk_tooltip_set_tip_area().
16189  *
16190  * Note that if @path is not specified and @cell is set and part of a column
16191  * containing the expander, the tooltip might not show and hide at the correct
16192  * position.  In such cases @path must be set to the current node under the
16193  * mouse cursor for this function to operate correctly.
16194  *
16195  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16196  *
16197  * Since: 2.12
16198  */
16199 void
16200 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16201                                 GtkTooltip        *tooltip,
16202                                 GtkTreePath       *path,
16203                                 GtkTreeViewColumn *column,
16204                                 GtkCellRenderer   *cell)
16205 {
16206   GtkAllocation allocation;
16207   GdkRectangle rect;
16208
16209   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16210   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16211   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16212   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16213
16214   /* Determine x values. */
16215   if (column && cell)
16216     {
16217       GdkRectangle tmp;
16218       gint start, width;
16219
16220       /* We always pass in path here, whether it is NULL or not.
16221        * For cells in expander columns path must be specified so that
16222        * we can correctly account for the indentation.  This also means
16223        * that the tooltip is constrained vertically by the "Determine y
16224        * values" code below; this is not a real problem since cells actually
16225        * don't stretch vertically in constrast to columns.
16226        */
16227       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16228       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16229
16230       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16231                                                          tmp.x + start, 0,
16232                                                          &rect.x, NULL);
16233       rect.width = width;
16234     }
16235   else if (column)
16236     {
16237       GdkRectangle tmp;
16238
16239       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16240       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16241                                                          tmp.x, 0,
16242                                                          &rect.x, NULL);
16243       rect.width = tmp.width;
16244     }
16245   else
16246     {
16247       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16248       rect.x = 0;
16249       rect.width = allocation.width;
16250     }
16251
16252   /* Determine y values. */
16253   if (path)
16254     {
16255       GdkRectangle tmp;
16256
16257       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16258       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16259                                                          0, tmp.y,
16260                                                          NULL, &rect.y);
16261       rect.height = tmp.height;
16262     }
16263   else
16264     {
16265       rect.y = 0;
16266       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16267     }
16268
16269   gtk_tooltip_set_tip_area (tooltip, &rect);
16270 }
16271
16272 /**
16273  * gtk_tree_view_get_tooltip_context:
16274  * @tree_view: a #GtkTreeView
16275  * @x: (inout): the x coordinate (relative to widget coordinates)
16276  * @y: (inout): the y coordinate (relative to widget coordinates)
16277  * @keyboard_tip: whether this is a keyboard tooltip or not
16278  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16279  *         #GtkTreeModel or %NULL
16280  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16281  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16282  *
16283  * This function is supposed to be used in a #GtkWidget::query-tooltip
16284  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16285  * which are received in the signal handler, should be passed to this
16286  * function without modification.
16287  *
16288  * The return value indicates whether there is a tree view row at the given
16289  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16290  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16291  * @model, @path and @iter which have been provided will be set to point to
16292  * that row and the corresponding model.  @x and @y will always be converted
16293  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16294  *
16295  * Return value: whether or not the given tooltip context points to a row.
16296  *
16297  * Since: 2.12
16298  */
16299 gboolean
16300 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16301                                    gint          *x,
16302                                    gint          *y,
16303                                    gboolean       keyboard_tip,
16304                                    GtkTreeModel **model,
16305                                    GtkTreePath  **path,
16306                                    GtkTreeIter   *iter)
16307 {
16308   GtkTreePath *tmppath = NULL;
16309
16310   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16311   g_return_val_if_fail (x != NULL, FALSE);
16312   g_return_val_if_fail (y != NULL, FALSE);
16313
16314   if (keyboard_tip)
16315     {
16316       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16317
16318       if (!tmppath)
16319         return FALSE;
16320     }
16321   else
16322     {
16323       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16324                                                          x, y);
16325
16326       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16327                                           &tmppath, NULL, NULL, NULL))
16328         return FALSE;
16329     }
16330
16331   if (model)
16332     *model = gtk_tree_view_get_model (tree_view);
16333
16334   if (iter)
16335     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16336                              iter, tmppath);
16337
16338   if (path)
16339     *path = tmppath;
16340   else
16341     gtk_tree_path_free (tmppath);
16342
16343   return TRUE;
16344 }
16345
16346 static gboolean
16347 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16348                                     gint        x,
16349                                     gint        y,
16350                                     gboolean    keyboard_tip,
16351                                     GtkTooltip *tooltip,
16352                                     gpointer    data)
16353 {
16354   GValue value = G_VALUE_INIT;
16355   GValue transformed = G_VALUE_INIT;
16356   GtkTreeIter iter;
16357   GtkTreePath *path;
16358   GtkTreeModel *model;
16359   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16360
16361   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16362                                           &x, &y,
16363                                           keyboard_tip,
16364                                           &model, &path, &iter))
16365     return FALSE;
16366
16367   gtk_tree_model_get_value (model, &iter,
16368                             tree_view->priv->tooltip_column, &value);
16369
16370   g_value_init (&transformed, G_TYPE_STRING);
16371
16372   if (!g_value_transform (&value, &transformed))
16373     {
16374       g_value_unset (&value);
16375       gtk_tree_path_free (path);
16376
16377       return FALSE;
16378     }
16379
16380   g_value_unset (&value);
16381
16382   if (!g_value_get_string (&transformed))
16383     {
16384       g_value_unset (&transformed);
16385       gtk_tree_path_free (path);
16386
16387       return FALSE;
16388     }
16389
16390   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16391   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16392
16393   gtk_tree_path_free (path);
16394   g_value_unset (&transformed);
16395
16396   return TRUE;
16397 }
16398
16399 /**
16400  * gtk_tree_view_set_tooltip_column:
16401  * @tree_view: a #GtkTreeView
16402  * @column: an integer, which is a valid column number for @tree_view's model
16403  *
16404  * If you only plan to have simple (text-only) tooltips on full rows, you
16405  * can use this function to have #GtkTreeView handle these automatically
16406  * for you. @column should be set to the column in @tree_view's model
16407  * containing the tooltip texts, or -1 to disable this feature.
16408  *
16409  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16410  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16411  *
16412  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16413  * so &amp;, &lt;, etc have to be escaped in the text.
16414  *
16415  * Since: 2.12
16416  */
16417 void
16418 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16419                                   gint         column)
16420 {
16421   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16422
16423   if (column == tree_view->priv->tooltip_column)
16424     return;
16425
16426   if (column == -1)
16427     {
16428       g_signal_handlers_disconnect_by_func (tree_view,
16429                                             gtk_tree_view_set_tooltip_query_cb,
16430                                             NULL);
16431       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16432     }
16433   else
16434     {
16435       if (tree_view->priv->tooltip_column == -1)
16436         {
16437           g_signal_connect (tree_view, "query-tooltip",
16438                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16439           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16440         }
16441     }
16442
16443   tree_view->priv->tooltip_column = column;
16444   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16445 }
16446
16447 /**
16448  * gtk_tree_view_get_tooltip_column:
16449  * @tree_view: a #GtkTreeView
16450  *
16451  * Returns the column of @tree_view's model which is being used for
16452  * displaying tooltips on @tree_view's rows.
16453  *
16454  * Return value: the index of the tooltip column that is currently being
16455  * used, or -1 if this is disabled.
16456  *
16457  * Since: 2.12
16458  */
16459 gint
16460 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16461 {
16462   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16463
16464   return tree_view->priv->tooltip_column;
16465 }