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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmainprivate.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkbuildable.h"
  34 #include "gtkbutton.h"
  35 #include "gtkalignment.h"
  36 #include "gtklabel.h"
  37 #include "gtkhbox.h"
  38 #include "gtkvbox.h"
  39 #include "gtkarrow.h"
  40 #include "gtkintl.h"
  41 #include "gtkbindings.h"
  42 #include "gtkcontainer.h"
  43 #include "gtkentry.h"
  44 #include "gtkframe.h"
  45 #include "gtktreemodelsort.h"
  46 #include "gtktooltip.h"
  47 #include "gtkscrollable.h"
  48 #include "gtkcelllayout.h"
  49 #include "gtkprivate.h"
  50 #include "gtkwidgetprivate.h"
  51 #include "gtkentryprivate.h"
  52 #include "gtkstylecontextprivate.h"
  53 #include "gtktypebuiltins.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155  /* This lovely little value is used to determine how far away from the title bar
 156   * you can move the mouse and still have a column drag work.
 157   */
 158 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 159
 160 #ifdef __GNUC__
 161
 162 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 163      if (!(expr))                                                       \
 164        {                                                                \
 165          g_log (G_LOG_DOMAIN,                                           \
 166                 G_LOG_LEVEL_CRITICAL,                                   \
 167                 "%s (%s): assertion `%s' failed.\n"                     \
 168                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 169                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 170                 "without letting the view know.  Any display from now on is likely to\n"  \
 171                 "be incorrect.\n",                                                        \
 172                 G_STRLOC,                                               \
 173                 G_STRFUNC,                                              \
 174                 #expr);                                                 \
 175          return ret;                                                    \
 176        };                               }G_STMT_END
 177
 178 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 179      if (!(expr))                                                       \
 180        {                                                                \
 181          g_log (G_LOG_DOMAIN,                                           \
 182                 G_LOG_LEVEL_CRITICAL,                                   \
 183                 "%s (%s): assertion `%s' failed.\n"                     \
 184                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 185                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 186                 "without letting the view know.  Any display from now on is likely to\n"  \
 187                 "be incorrect.\n",                                                        \
 188                 G_STRLOC,                                               \
 189                 G_STRFUNC,                                              \
 190                 #expr);                                                 \
 191          return;                                                        \
 192        };                               }G_STMT_END
 193
 194 #else
 195
 196 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 197      if (!(expr))                                                       \
 198        {                                                                \
 199          g_log (G_LOG_DOMAIN,                                           \
 200                 G_LOG_LEVEL_CRITICAL,                                   \
 201                 "file %s: line %d: assertion `%s' failed.\n"       \
 202                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 203                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 204                 "without letting the view know.  Any display from now on is likely to\n"  \
 205                 "be incorrect.\n",                                                        \
 206                 __FILE__,                                               \
 207                 __LINE__,                                               \
 208                 #expr);                                                 \
 209          return ret;                                                    \
 210        };                               }G_STMT_END
 211
 212 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 213      if (!(expr))                                                       \
 214        {                                                                \
 215          g_log (G_LOG_DOMAIN,                                           \
 216                 G_LOG_LEVEL_CRITICAL,                                   \
 217                 "file %s: line %d: assertion '%s' failed.\n"            \
 218                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 219                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 220                 "without letting the view know.  Any display from now on is likely to\n"  \
 221                 "be incorrect.\n",                                                        \
 222                 __FILE__,                                               \
 223                 __LINE__,                                               \
 224                 #expr);                                                 \
 225          return;                                                        \
 226        };                               }G_STMT_END
 227 #endif
 228
 229 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 230 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 231 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 232 #define SCROLL_EDGE_SIZE 15
 233 #define EXPANDER_EXTRA_PADDING 4
 234 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 235 #define AUTO_EXPAND_TIMEOUT 500
 236
 237 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 238  * vice versa.
 239  */
 240 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 241 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 242
 243 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 244 struct _GtkTreeViewColumnReorder
 245 {
 246   gint left_align;
 247   gint right_align;
 248   GtkTreeViewColumn *left_column;
 249   GtkTreeViewColumn *right_column;
 250 };
 251
 252 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 253 struct _GtkTreeViewChild
 254 {
 255   GtkWidget *widget;
 256   gint x;
 257   gint y;
 258   gint width;
 259   gint height;
 260 };
 261
 262
 263 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 264 struct _TreeViewDragInfo
 265 {
 266   GdkModifierType start_button_mask;
 267   GtkTargetList *_unused_source_target_list;
 268   GdkDragAction source_actions;
 269
 270   GtkTargetList *_unused_dest_target_list;
 271
 272   guint source_set : 1;
 273   guint dest_set : 1;
 274 };
 275
 276
 277 struct _GtkTreeViewPrivate
 278 {
 279   GtkTreeModel *model;
 280
 281   /* tree information */
 282   GtkRBTree *tree;
 283
 284   /* Container info */
 285   GList *children;
 286   gint width;
 287   gint height;
 288
 289   /* Adjustments */
 290   GtkAdjustment *hadjustment;
 291   GtkAdjustment *vadjustment;
 292   gint           min_display_width;
 293   gint           min_display_height;
 294
 295   /* Sub windows */
 296   GdkWindow *bin_window;
 297   GdkWindow *header_window;
 298
 299   /* Scroll position state keeping */
 300   GtkTreeRowReference *top_row;
 301   gint top_row_dy;
 302   /* dy == y pos of top_row + top_row_dy */
 303   /* we cache it for simplicity of the code */
 304   gint dy;
 305
 306   guint presize_handler_timer;
 307   guint validate_rows_timer;
 308   guint scroll_sync_timer;
 309
 310   /* Indentation and expander layout */
 311   gint expander_size;
 312   GtkTreeViewColumn *expander_column;
 313
 314   gint level_indentation;
 315
 316   /* Key navigation (focus), selection */
 317   gint cursor_offset;
 318
 319   GtkTreeRowReference *anchor;
 320   GtkTreeRowReference *cursor;
 321
 322   GtkTreeViewColumn *focus_column;
 323
 324   /* Current pressed node, previously pressed, prelight */
 325   GtkRBNode *button_pressed_node;
 326   GtkRBTree *button_pressed_tree;
 327
 328   gint pressed_button;
 329   gint press_start_x;
 330   gint press_start_y;
 331
 332   gint event_last_x;
 333   gint event_last_y;
 334
 335   guint last_button_time;
 336   gint last_button_x;
 337   gint last_button_y;
 338
 339   GtkRBNode *prelight_node;
 340   GtkRBTree *prelight_tree;
 341
 342   /* Cell Editing */
 343   GtkTreeViewColumn *edited_column;
 344
 345   /* The node that's currently being collapsed or expanded */
 346   GtkRBNode *expanded_collapsed_node;
 347   GtkRBTree *expanded_collapsed_tree;
 348   guint expand_collapse_timeout;
 349
 350   /* Auto expand/collapse timeout in hover mode */
 351   guint auto_expand_timeout;
 352
 353   /* Selection information */
 354   GtkTreeSelection *selection;
 355
 356   /* Header information */
 357   gint n_columns;
 358   GList *columns;
 359   gint header_height;
 360
 361   GtkTreeViewColumnDropFunc column_drop_func;
 362   gpointer column_drop_func_data;
 363   GDestroyNotify column_drop_func_data_destroy;
 364   GList *column_drag_info;
 365   GtkTreeViewColumnReorder *cur_reorder;
 366
 367   gint prev_width_before_expander;
 368
 369   /* Interactive Header reordering */
 370   GdkWindow *drag_window;
 371   GdkWindow *drag_highlight_window;
 372   GtkTreeViewColumn *drag_column;
 373   gint drag_column_x;
 374
 375   /* Interactive Header Resizing */
 376   gint drag_pos;
 377   gint x_drag;
 378
 379   /* Non-interactive Header Resizing, expand flag support */
 380   gint prev_width;
 381
 382   gint last_extra_space;
 383   gint last_extra_space_per_column;
 384   gint last_number_of_expand_columns;
 385
 386   /* ATK Hack */
 387   GtkTreeDestroyCountFunc destroy_count_func;
 388   gpointer destroy_count_data;
 389   GDestroyNotify destroy_count_destroy;
 390
 391   /* Scroll timeout (e.g. during dnd, rubber banding) */
 392   guint scroll_timeout;
 393
 394   /* Row drag-and-drop */
 395   GtkTreeRowReference *drag_dest_row;
 396   GtkTreeViewDropPosition drag_dest_pos;
 397   guint open_dest_timeout;
 398
 399   /* Rubber banding */
 400   gint rubber_band_status;
 401   gint rubber_band_x;
 402   gint rubber_band_y;
 403   gint rubber_band_shift;
 404   gint rubber_band_ctrl;
 405
 406   GtkRBNode *rubber_band_start_node;
 407   GtkRBTree *rubber_band_start_tree;
 408
 409   GtkRBNode *rubber_band_end_node;
 410   GtkRBTree *rubber_band_end_tree;
 411
 412   /* fixed height */
 413   gint fixed_height;
 414
 415   /* Scroll-to functionality when unrealized */
 416   GtkTreeRowReference *scroll_to_path;
 417   GtkTreeViewColumn *scroll_to_column;
 418   gfloat scroll_to_row_align;
 419   gfloat scroll_to_col_align;
 420
 421   /* Interactive search */
 422   gint selected_iter;
 423   gint search_column;
 424   GtkTreeViewSearchPositionFunc search_position_func;
 425   GtkTreeViewSearchEqualFunc search_equal_func;
 426   gpointer search_user_data;
 427   GDestroyNotify search_destroy;
 428   gpointer search_position_user_data;
 429   GDestroyNotify search_position_destroy;
 430   GtkWidget *search_window;
 431   GtkWidget *search_entry;
 432   gulong search_entry_changed_id;
 433   guint typeselect_flush_timeout;
 434
 435   /* Grid and tree lines */
 436   GtkTreeViewGridLines grid_lines;
 437   double grid_line_dashes[2];
 438   int grid_line_width;
 439
 440   gboolean tree_lines_enabled;
 441   double tree_line_dashes[2];
 442   int tree_line_width;
 443
 444   /* Row separators */
 445   GtkTreeViewRowSeparatorFunc row_separator_func;
 446   gpointer row_separator_data;
 447   GDestroyNotify row_separator_destroy;
 448
 449   /* Tooltip support */
 450   gint tooltip_column;
 451
 452   /* Here comes the bitfield */
 453   guint scroll_to_use_align : 1;
 454
 455   guint fixed_height_mode : 1;
 456   guint fixed_height_check : 1;
 457
 458   guint reorderable : 1;
 459   guint header_has_focus : 1;
 460   guint drag_column_window_state : 3;
 461   /* hint to display rows in alternating colors */
 462   guint has_rules : 1;
 463   guint mark_rows_col_dirty : 1;
 464
 465   /* for DnD */
 466   guint empty_view_drop : 1;
 467
 468   guint ctrl_pressed : 1;
 469   guint shift_pressed : 1;
 470
 471   guint init_hadjust_value : 1;
 472
 473   guint in_top_row_to_dy : 1;
 474
 475   /* interactive search */
 476   guint enable_search : 1;
 477   guint disable_popdown : 1;
 478   guint search_custom_entry_set : 1;
 479
 480   guint hover_selection : 1;
 481   guint hover_expand : 1;
 482   guint imcontext_changed : 1;
 483
 484   guint rubber_banding_enable : 1;
 485
 486   guint in_grab : 1;
 487
 488   guint post_validation_flag : 1;
 489
 490   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 491   guint search_entry_avoid_unhandled_binding : 1;
 492
 493   /* GtkScrollablePolicy needs to be checked when
 494    * driving the scrollable adjustment values */
 495   guint hscroll_policy : 1;
 496   guint vscroll_policy : 1;
 497
 498   /* GtkTreeView flags */
 499   guint is_list : 1;
 500   guint show_expanders : 1;
 501   guint in_column_resize : 1;
 502   guint arrow_prelit : 1;
 503   guint headers_visible : 1;
 504   guint draw_keyfocus : 1;
 505   guint model_setup : 1;
 506   guint in_column_drag : 1;
 507 };
 508
 509
 510 /* Signals */
 511 enum
 512 {
 513   ROW_ACTIVATED,
 514   TEST_EXPAND_ROW,
 515   TEST_COLLAPSE_ROW,
 516   ROW_EXPANDED,
 517   ROW_COLLAPSED,
 518   COLUMNS_CHANGED,
 519   CURSOR_CHANGED,
 520   MOVE_CURSOR,
 521   SELECT_ALL,
 522   UNSELECT_ALL,
 523   SELECT_CURSOR_ROW,
 524   TOGGLE_CURSOR_ROW,
 525   EXPAND_COLLAPSE_CURSOR_ROW,
 526   SELECT_CURSOR_PARENT,
 527   START_INTERACTIVE_SEARCH,
 528   LAST_SIGNAL
 529 };
 530
 531 /* Properties */
 532 enum {
 533   PROP_0,
 534   PROP_MODEL,
 535   PROP_HADJUSTMENT,
 536   PROP_VADJUSTMENT,
 537   PROP_HSCROLL_POLICY,
 538   PROP_VSCROLL_POLICY,
 539   PROP_HEADERS_VISIBLE,
 540   PROP_HEADERS_CLICKABLE,
 541   PROP_EXPANDER_COLUMN,
 542   PROP_REORDERABLE,
 543   PROP_RULES_HINT,
 544   PROP_ENABLE_SEARCH,
 545   PROP_SEARCH_COLUMN,
 546   PROP_FIXED_HEIGHT_MODE,
 547   PROP_HOVER_SELECTION,
 548   PROP_HOVER_EXPAND,
 549   PROP_SHOW_EXPANDERS,
 550   PROP_LEVEL_INDENTATION,
 551   PROP_RUBBER_BANDING,
 552   PROP_ENABLE_GRID_LINES,
 553   PROP_ENABLE_TREE_LINES,
 554   PROP_TOOLTIP_COLUMN
 555 };
 556
 557 /* object signals */
 558 static void     gtk_tree_view_finalize             (GObject          *object);
 559 static void     gtk_tree_view_set_property         (GObject         *object,
 560                                                     guint            prop_id,
 561                                                     const GValue    *value,
 562                                                     GParamSpec      *pspec);
 563 static void     gtk_tree_view_get_property         (GObject         *object,
 564                                                     guint            prop_id,
 565                                                     GValue          *value,
 566                                                     GParamSpec      *pspec);
 567
 568 /* gtkwidget signals */
 569 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 570 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 571 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 572 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 573 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 574                                                     gint             *minimum,
 575                                                     gint             *natural);
 576 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 577                                                     gint             *minimum,
 578                                                     gint             *natural);
 579 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 580                                                     GtkRequisition   *requisition,
 581                                                     gboolean          may_validate);
 582 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 583                                                     GtkAllocation    *allocation);
 584 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 585                                                     cairo_t          *cr);
 586 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 587                                                     GdkEventKey      *event);
 588 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 589                                                     GdkEventKey      *event);
 590 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 591                                                     GdkEventMotion   *event);
 592 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 593                                                     GdkEventCrossing *event);
 594 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 595                                                     GdkEventCrossing *event);
 596 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 597                                                     GdkEventButton   *event);
 598 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 599                                                     GdkEventButton   *event);
 600 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 601                                                     GdkEventGrabBroken *event);
 602 #if 0
 603 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 604                                                     GdkEventConfigure *event);
 605 #endif
 606
 607 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 608                                                          GtkWidget    *child);
 609
 610 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 611                                                     GtkWidget        *child);
 612 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 613                                                     GdkEventFocus    *event);
 614 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 615                                                     GtkDirectionType  direction);
 616 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 617 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 618 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 619                                                     gboolean          was_grabbed);
 620 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 621                                                     GtkStateFlags     previous_state);
 622
 623 /* container signals */
 624 static void     gtk_tree_view_remove               (GtkContainer     *container,
 625                                                     GtkWidget        *widget);
 626 static void     gtk_tree_view_forall               (GtkContainer     *container,
 627                                                     gboolean          include_internals,
 628                                                     GtkCallback       callback,
 629                                                     gpointer          callback_data);
 630
 631 /* Source side drag signals */
 632 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 633                                             GdkDragContext   *context);
 634 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 635                                             GdkDragContext   *context);
 636 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 637                                             GdkDragContext   *context,
 638                                             GtkSelectionData *selection_data,
 639                                             guint             info,
 640                                             guint             time);
 641 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643
 644 /* Target side drag signals */
 645 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 646                                                   GdkDragContext   *context,
 647                                                   guint             time);
 648 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 649                                                   GdkDragContext   *context,
 650                                                   gint              x,
 651                                                   gint              y,
 652                                                   guint             time);
 653 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 654                                                   GdkDragContext   *context,
 655                                                   gint              x,
 656                                                   gint              y,
 657                                                   guint             time);
 658 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 659                                                   GdkDragContext   *context,
 660                                                   gint              x,
 661                                                   gint              y,
 662                                                   GtkSelectionData *selection_data,
 663                                                   guint             info,
 664                                                   guint             time);
 665
 666 /* tree_model signals */
 667 static void     gtk_tree_view_set_hadjustment             (GtkTreeView     *tree_view,
 668                                                            GtkAdjustment   *adjustment);
 669 static void     gtk_tree_view_set_vadjustment             (GtkTreeView     *tree_view,
 670                                                            GtkAdjustment   *adjustment);
 671 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 672                                                            GtkMovementStep  step,
 673                                                            gint             count);
 674 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 675 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 676 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 677                                                            gboolean         start_editing);
 678 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 680                                                                gboolean         logical,
 681                                                                gboolean         expand,
 682                                                                gboolean         open_all);
 683 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 684 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 685                                                            GtkTreePath     *path,
 686                                                            GtkTreeIter     *iter,
 687                                                            gpointer         data);
 688 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 689                                                            GtkTreePath     *path,
 690                                                            GtkTreeIter     *iter,
 691                                                            gpointer         data);
 692 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 693                                                            GtkTreePath     *path,
 694                                                            GtkTreeIter     *iter,
 695                                                            gpointer         data);
 696 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 697                                                            GtkTreePath     *path,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 700                                                            GtkTreePath     *parent,
 701                                                            GtkTreeIter     *iter,
 702                                                            gint            *new_order,
 703                                                            gpointer         data);
 704
 705 /* Incremental reflow */
 706 static gboolean validate_row             (GtkTreeView *tree_view,
 707                                           GtkRBTree   *tree,
 708                                           GtkRBNode   *node,
 709                                           GtkTreeIter *iter,
 710                                           GtkTreePath *path);
 711 static void     validate_visible_area    (GtkTreeView *tree_view);
 712 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 713 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 714                                           gboolean     size_request);
 715 static gboolean validate_rows            (GtkTreeView *tree_view);
 716 static gboolean presize_handler_callback (gpointer     data);
 717 static void     install_presize_handler  (GtkTreeView *tree_view);
 718 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 719 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 720                                              GtkTreePath *path,
 721                                              gint         offset);
 722 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 723 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 724 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 725
 726 /* Internal functions */
 727 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 728                                                               GtkTreeViewColumn  *column);
 729 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 730 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 731                                                               guint               keyval,
 732                                                               guint               modmask,
 733                                                               gboolean            add_shifted_binding,
 734                                                               GtkMovementStep     step,
 735                                                               gint                count);
 736 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 737                                                               GtkRBTree          *tree);
 738 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 739                                                               GtkTreePath        *path,
 740                                                               const GdkRectangle *clip_rect);
 741 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 742                                                               GtkRBTree          *tree,
 743                                                               GtkRBNode          *node);
 744 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 745                                                               cairo_t            *cr,
 746                                                               GtkRBTree          *tree,
 747                                                               GtkRBNode          *node,
 748                                                               gint                x,
 749                                                               gint                y);
 750 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 751                                                               GtkRBTree          *tree,
 752                                                               gint               *x1,
 753                                                               gint               *x2);
 754 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 755                                                               gint                i,
 756                                                               gint               *x);
 757 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 758                                                               GtkTreeView        *tree_view);
 759 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 760                                                               GtkRBTree          *tree,
 761                                                               GtkTreeIter        *iter,
 762                                                               gint                depth,
 763                                                               gboolean            recurse);
 764 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 765                                                               GtkRBTree          *tree,
 766                                                               GtkRBNode          *node);
 767 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 768                                                               GtkTreeViewColumn  *column,
 769                                                               gboolean            focus_to_cell);
 770 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 771                                                               GdkEventMotion     *event);
 772 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 773 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 774                                                               gint                count);
 775 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 776                                                               gint                count);
 777 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 778                                                               gint                count);
 779 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 780                                                               gint                count);
 781 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 782                                                               GtkTreePath        *path,
 783                                                               GtkRBTree          *tree,
 784                                                               GtkRBNode          *node,
 785                                                               gboolean            animate);
 786 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 787                                                               GtkTreePath        *path,
 788                                                               GtkRBTree          *tree,
 789                                                               GtkRBNode          *node,
 790                                                               gboolean            open_all,
 791                                                               gboolean            animate);
 792 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 793                                                               GtkTreePath        *path,
 794                                                               gboolean            clear_and_select,
 795                                                               gboolean            clamp_node);
 796 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 797 static void     column_sizing_notify                         (GObject            *object,
 798                                                               GParamSpec         *pspec,
 799                                                               gpointer            data);
 800 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 801 static void     update_prelight                              (GtkTreeView        *tree_view,
 802                                                               int                 x,
 803                                                               int                 y);
 804
 805 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 806
 807 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 808                                                               GtkRBTree   *tree,
 809                                                               GtkRBNode   *node,
 810                                                               gint         vertical_separator);
 811 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 812                                                               GtkRBNode   *node,
 813                                                               gint         vertical_separator);
 814
 815 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 816                                                               GtkRBTree   *tree,
 817                                                               GtkRBNode   *node);
 818 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 819                                                               GtkRBNode   *node);
 820
 821 /* interactive search */
 822 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 823 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 824                                                          GtkTreeView      *tree_view,
 825                                                          GdkDevice        *device);
 826 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 827                                                          GtkWidget        *search_dialog,
 828                                                          gpointer          user_data);
 829 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 830                                                          GtkMenu          *menu,
 831                                                          gpointer          data);
 832 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 833                                                          GtkTreeView      *tree_view);
 834 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 837 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 838                                                          gpointer          data);
 839 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 840                                                          GdkEventAny      *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 843                                                          GdkEventButton   *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 846                                                          GdkEventScroll   *event,
 847                                                          GtkTreeView      *tree_view);
 848 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 849                                                          GdkEventKey      *event,
 850                                                          GtkTreeView      *tree_view);
 851 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 852                                                          GtkTreeView      *tree_view,
 853                                                          gboolean          up);
 854 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 855                                                          gint              column,
 856                                                          const gchar      *key,
 857                                                          GtkTreeIter      *iter,
 858                                                          gpointer          search_data);
 859 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 860                                                          GtkTreeSelection *selection,
 861                                                          GtkTreeIter      *iter,
 862                                                          const gchar      *text,
 863                                                          gint             *count,
 864                                                          gint              n);
 865 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 866                                                          GtkTreeView      *tree_view);
 867 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 868                                                          GtkWidget        *child_widget,
 869                                                          gint              x,
 870                                                          gint              y,
 871                                                          gint              width,
 872                                                          gint              height);
 873 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 874                                                          GtkTreePath      *cursor_path,
 875                                                          gboolean          edit_only);
 876 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 877                                                          gboolean     cancel_editing);
 878 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 879                                                              GdkDevice   *device,
 880                                                              gboolean     keybinding);
 881 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 882 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 883                                                          GtkTreeViewColumn *column,
 884                                                          gint               drop_position);
 885
 886 /* GtkBuildable */
 887 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 888                                                             GtkBuilder        *builder,
 889                                                             GObject           *child,
 890                                                             const gchar       *type);
 891 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 892                                                             GtkBuilder        *builder,
 893                                                             const gchar       *childname);
 894 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 895
 896
 897 static gboolean scroll_row_timeout                   (gpointer     data);
 898 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 899 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 900
 901 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 902
 903 \f
 904
 905 /* GType Methods
 906  */
 907
 908 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 909                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 910                                                 gtk_tree_view_buildable_init)
 911                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 912
 913 static void
 914 gtk_tree_view_class_init (GtkTreeViewClass *class)
 915 {
 916   GObjectClass *o_class;
 917   GtkWidgetClass *widget_class;
 918   GtkContainerClass *container_class;
 919   GtkBindingSet *binding_set;
 920
 921   binding_set = gtk_binding_set_by_class (class);
 922
 923   o_class = (GObjectClass *) class;
 924   widget_class = (GtkWidgetClass *) class;
 925   container_class = (GtkContainerClass *) class;
 926
 927   /* GObject signals */
 928   o_class->set_property = gtk_tree_view_set_property;
 929   o_class->get_property = gtk_tree_view_get_property;
 930   o_class->finalize = gtk_tree_view_finalize;
 931
 932   /* GtkWidget signals */
 933   widget_class->destroy = gtk_tree_view_destroy;
 934   widget_class->map = gtk_tree_view_map;
 935   widget_class->realize = gtk_tree_view_realize;
 936   widget_class->unrealize = gtk_tree_view_unrealize;
 937   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 938   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 939   widget_class->size_allocate = gtk_tree_view_size_allocate;
 940   widget_class->button_press_event = gtk_tree_view_button_press;
 941   widget_class->button_release_event = gtk_tree_view_button_release;
 942   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 943   /*widget_class->configure_event = gtk_tree_view_configure;*/
 944   widget_class->motion_notify_event = gtk_tree_view_motion;
 945   widget_class->draw = gtk_tree_view_draw;
 946   widget_class->key_press_event = gtk_tree_view_key_press;
 947   widget_class->key_release_event = gtk_tree_view_key_release;
 948   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 949   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 950   widget_class->focus_out_event = gtk_tree_view_focus_out;
 951   widget_class->drag_begin = gtk_tree_view_drag_begin;
 952   widget_class->drag_end = gtk_tree_view_drag_end;
 953   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 954   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 955   widget_class->drag_leave = gtk_tree_view_drag_leave;
 956   widget_class->drag_motion = gtk_tree_view_drag_motion;
 957   widget_class->drag_drop = gtk_tree_view_drag_drop;
 958   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 959   widget_class->focus = gtk_tree_view_focus;
 960   widget_class->grab_focus = gtk_tree_view_grab_focus;
 961   widget_class->style_updated = gtk_tree_view_style_updated;
 962   widget_class->grab_notify = gtk_tree_view_grab_notify;
 963   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 964
 965   /* GtkContainer signals */
 966   container_class->remove = gtk_tree_view_remove;
 967   container_class->forall = gtk_tree_view_forall;
 968   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 969   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 970
 971   class->move_cursor = gtk_tree_view_real_move_cursor;
 972   class->select_all = gtk_tree_view_real_select_all;
 973   class->unselect_all = gtk_tree_view_real_unselect_all;
 974   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 975   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 976   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 977   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 978   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 979
 980   /* Properties */
 981
 982   g_object_class_install_property (o_class,
 983                                    PROP_MODEL,
 984                                    g_param_spec_object ("model",
 985                                                         P_("TreeView Model"),
 986                                                         P_("The model for the tree view"),
 987                                                         GTK_TYPE_TREE_MODEL,
 988                                                         GTK_PARAM_READWRITE));
 989
 990   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 991   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 992   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 993   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
 994
 995   g_object_class_install_property (o_class,
 996                                    PROP_HEADERS_VISIBLE,
 997                                    g_param_spec_boolean ("headers-visible",
 998                                                          P_("Headers Visible"),
 999                                                          P_("Show the column header buttons"),
1000                                                          TRUE,
1001                                                          GTK_PARAM_READWRITE));
1002
1003   g_object_class_install_property (o_class,
1004                                    PROP_HEADERS_CLICKABLE,
1005                                    g_param_spec_boolean ("headers-clickable",
1006                                                          P_("Headers Clickable"),
1007                                                          P_("Column headers respond to click events"),
1008                                                          TRUE,
1009                                                          GTK_PARAM_READWRITE));
1010
1011   g_object_class_install_property (o_class,
1012                                    PROP_EXPANDER_COLUMN,
1013                                    g_param_spec_object ("expander-column",
1014                                                         P_("Expander Column"),
1015                                                         P_("Set the column for the expander column"),
1016                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1017                                                         GTK_PARAM_READWRITE));
1018
1019   g_object_class_install_property (o_class,
1020                                    PROP_REORDERABLE,
1021                                    g_param_spec_boolean ("reorderable",
1022                                                          P_("Reorderable"),
1023                                                          P_("View is reorderable"),
1024                                                          FALSE,
1025                                                          GTK_PARAM_READWRITE));
1026
1027   g_object_class_install_property (o_class,
1028                                    PROP_RULES_HINT,
1029                                    g_param_spec_boolean ("rules-hint",
1030                                                          P_("Rules Hint"),
1031                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1032                                                          FALSE,
1033                                                          GTK_PARAM_READWRITE));
1034
1035     g_object_class_install_property (o_class,
1036                                      PROP_ENABLE_SEARCH,
1037                                      g_param_spec_boolean ("enable-search",
1038                                                            P_("Enable Search"),
1039                                                            P_("View allows user to search through columns interactively"),
1040                                                            TRUE,
1041                                                            GTK_PARAM_READWRITE));
1042
1043     g_object_class_install_property (o_class,
1044                                      PROP_SEARCH_COLUMN,
1045                                      g_param_spec_int ("search-column",
1046                                                        P_("Search Column"),
1047                                                        P_("Model column to search through during interactive search"),
1048                                                        -1,
1049                                                        G_MAXINT,
1050                                                        -1,
1051                                                        GTK_PARAM_READWRITE));
1052
1053     /**
1054      * GtkTreeView:fixed-height-mode:
1055      *
1056      * Setting the ::fixed-height-mode property to %TRUE speeds up
1057      * #GtkTreeView by assuming that all rows have the same height.
1058      * Only enable this option if all rows are the same height.
1059      * Please see gtk_tree_view_set_fixed_height_mode() for more
1060      * information on this option.
1061      *
1062      * Since: 2.4
1063      **/
1064     g_object_class_install_property (o_class,
1065                                      PROP_FIXED_HEIGHT_MODE,
1066                                      g_param_spec_boolean ("fixed-height-mode",
1067                                                            P_("Fixed Height Mode"),
1068                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1069                                                            FALSE,
1070                                                            GTK_PARAM_READWRITE));
1071
1072     /**
1073      * GtkTreeView:hover-selection:
1074      *
1075      * Enables or disables the hover selection mode of @tree_view.
1076      * Hover selection makes the selected row follow the pointer.
1077      * Currently, this works only for the selection modes
1078      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1079      *
1080      * This mode is primarily intended for treeviews in popups, e.g.
1081      * in #GtkComboBox or #GtkEntryCompletion.
1082      *
1083      * Since: 2.6
1084      */
1085     g_object_class_install_property (o_class,
1086                                      PROP_HOVER_SELECTION,
1087                                      g_param_spec_boolean ("hover-selection",
1088                                                            P_("Hover Selection"),
1089                                                            P_("Whether the selection should follow the pointer"),
1090                                                            FALSE,
1091                                                            GTK_PARAM_READWRITE));
1092
1093     /**
1094      * GtkTreeView:hover-expand:
1095      *
1096      * Enables or disables the hover expansion mode of @tree_view.
1097      * Hover expansion makes rows expand or collapse if the pointer moves
1098      * over them.
1099      *
1100      * This mode is primarily intended for treeviews in popups, e.g.
1101      * in #GtkComboBox or #GtkEntryCompletion.
1102      *
1103      * Since: 2.6
1104      */
1105     g_object_class_install_property (o_class,
1106                                      PROP_HOVER_EXPAND,
1107                                      g_param_spec_boolean ("hover-expand",
1108                                                            P_("Hover Expand"),
1109                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1110                                                            FALSE,
1111                                                            GTK_PARAM_READWRITE));
1112
1113     /**
1114      * GtkTreeView:show-expanders:
1115      *
1116      * %TRUE if the view has expanders.
1117      *
1118      * Since: 2.12
1119      */
1120     g_object_class_install_property (o_class,
1121                                      PROP_SHOW_EXPANDERS,
1122                                      g_param_spec_boolean ("show-expanders",
1123                                                            P_("Show Expanders"),
1124                                                            P_("View has expanders"),
1125                                                            TRUE,
1126                                                            GTK_PARAM_READWRITE));
1127
1128     /**
1129      * GtkTreeView:level-indentation:
1130      *
1131      * Extra indentation for each level.
1132      *
1133      * Since: 2.12
1134      */
1135     g_object_class_install_property (o_class,
1136                                      PROP_LEVEL_INDENTATION,
1137                                      g_param_spec_int ("level-indentation",
1138                                                        P_("Level Indentation"),
1139                                                        P_("Extra indentation for each level"),
1140                                                        0,
1141                                                        G_MAXINT,
1142                                                        0,
1143                                                        GTK_PARAM_READWRITE));
1144
1145     g_object_class_install_property (o_class,
1146                                      PROP_RUBBER_BANDING,
1147                                      g_param_spec_boolean ("rubber-banding",
1148                                                            P_("Rubber Banding"),
1149                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1150                                                            FALSE,
1151                                                            GTK_PARAM_READWRITE));
1152
1153     g_object_class_install_property (o_class,
1154                                      PROP_ENABLE_GRID_LINES,
1155                                      g_param_spec_enum ("enable-grid-lines",
1156                                                         P_("Enable Grid Lines"),
1157                                                         P_("Whether grid lines should be drawn in the tree view"),
1158                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1159                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1160                                                         GTK_PARAM_READWRITE));
1161
1162     g_object_class_install_property (o_class,
1163                                      PROP_ENABLE_TREE_LINES,
1164                                      g_param_spec_boolean ("enable-tree-lines",
1165                                                            P_("Enable Tree Lines"),
1166                                                            P_("Whether tree lines should be drawn in the tree view"),
1167                                                            FALSE,
1168                                                            GTK_PARAM_READWRITE));
1169
1170     g_object_class_install_property (o_class,
1171                                      PROP_TOOLTIP_COLUMN,
1172                                      g_param_spec_int ("tooltip-column",
1173                                                        P_("Tooltip Column"),
1174                                                        P_("The column in the model containing the tooltip texts for the rows"),
1175                                                        -1,
1176                                                        G_MAXINT,
1177                                                        -1,
1178                                                        GTK_PARAM_READWRITE));
1179
1180   /* Style properties */
1181 #define _TREE_VIEW_EXPANDER_SIZE 12
1182 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1183 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1184
1185   gtk_widget_class_install_style_property (widget_class,
1186                                            g_param_spec_int ("expander-size",
1187                                                              P_("Expander Size"),
1188                                                              P_("Size of the expander arrow"),
1189                                                              0,
1190                                                              G_MAXINT,
1191                                                              _TREE_VIEW_EXPANDER_SIZE,
1192                                                              GTK_PARAM_READABLE));
1193
1194   gtk_widget_class_install_style_property (widget_class,
1195                                            g_param_spec_int ("vertical-separator",
1196                                                              P_("Vertical Separator Width"),
1197                                                              P_("Vertical space between cells.  Must be an even number"),
1198                                                              0,
1199                                                              G_MAXINT,
1200                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1201                                                              GTK_PARAM_READABLE));
1202
1203   gtk_widget_class_install_style_property (widget_class,
1204                                            g_param_spec_int ("horizontal-separator",
1205                                                              P_("Horizontal Separator Width"),
1206                                                              P_("Horizontal space between cells.  Must be an even number"),
1207                                                              0,
1208                                                              G_MAXINT,
1209                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1210                                                              GTK_PARAM_READABLE));
1211
1212   gtk_widget_class_install_style_property (widget_class,
1213                                            g_param_spec_boolean ("allow-rules",
1214                                                                  P_("Allow Rules"),
1215                                                                  P_("Allow drawing of alternating color rows"),
1216                                                                  TRUE,
1217                                                                  GTK_PARAM_READABLE));
1218
1219   gtk_widget_class_install_style_property (widget_class,
1220                                            g_param_spec_boolean ("indent-expanders",
1221                                                                  P_("Indent Expanders"),
1222                                                                  P_("Make the expanders indented"),
1223                                                                  TRUE,
1224                                                                  GTK_PARAM_READABLE));
1225
1226   gtk_widget_class_install_style_property (widget_class,
1227                                            g_param_spec_boxed ("even-row-color",
1228                                                                P_("Even Row Color"),
1229                                                                P_("Color to use for even rows"),
1230                                                                GDK_TYPE_COLOR,
1231                                                                GTK_PARAM_READABLE));
1232
1233   gtk_widget_class_install_style_property (widget_class,
1234                                            g_param_spec_boxed ("odd-row-color",
1235                                                                P_("Odd Row Color"),
1236                                                                P_("Color to use for odd rows"),
1237                                                                GDK_TYPE_COLOR,
1238                                                                GTK_PARAM_READABLE));
1239
1240   gtk_widget_class_install_style_property (widget_class,
1241                                            g_param_spec_int ("grid-line-width",
1242                                                              P_("Grid line width"),
1243                                                              P_("Width, in pixels, of the tree view grid lines"),
1244                                                              0, G_MAXINT, 1,
1245                                                              GTK_PARAM_READABLE));
1246
1247   gtk_widget_class_install_style_property (widget_class,
1248                                            g_param_spec_int ("tree-line-width",
1249                                                              P_("Tree line width"),
1250                                                              P_("Width, in pixels, of the tree view lines"),
1251                                                              0, G_MAXINT, 1,
1252                                                              GTK_PARAM_READABLE));
1253
1254   gtk_widget_class_install_style_property (widget_class,
1255                                            g_param_spec_string ("grid-line-pattern",
1256                                                                 P_("Grid line pattern"),
1257                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1258                                                                 "\1\1",
1259                                                                 GTK_PARAM_READABLE));
1260
1261   gtk_widget_class_install_style_property (widget_class,
1262                                            g_param_spec_string ("tree-line-pattern",
1263                                                                 P_("Tree line pattern"),
1264                                                                 P_("Dash pattern used to draw the tree view lines"),
1265                                                                 "\1\1",
1266                                                                 GTK_PARAM_READABLE));
1267
1268   /* Signals */
1269   /**
1270    * GtkTreeView::row-activated:
1271    * @tree_view: the object on which the signal is emitted
1272    * @path: the #GtkTreePath for the activated row
1273    * @column: the #GtkTreeViewColumn in which the activation occurred
1274    *
1275    * The "row-activated" signal is emitted when the method
1276    * gtk_tree_view_row_activated() is called or the user double clicks
1277    * a treeview row. It is also emitted when a non-editable row is
1278    * selected and one of the keys: Space, Shift+Space, Return or
1279    * Enter is pressed.
1280    *
1281    * For selection handling refer to the <link linkend="TreeWidget">tree
1282    * widget conceptual overview</link> as well as #GtkTreeSelection.
1283    */
1284   tree_view_signals[ROW_ACTIVATED] =
1285     g_signal_new (I_("row-activated"),
1286                   G_TYPE_FROM_CLASS (o_class),
1287                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1288                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1289                   NULL, NULL,
1290                   _gtk_marshal_VOID__BOXED_OBJECT,
1291                   G_TYPE_NONE, 2,
1292                   GTK_TYPE_TREE_PATH,
1293                   GTK_TYPE_TREE_VIEW_COLUMN);
1294
1295   /**
1296    * GtkTreeView::test-expand-row:
1297    * @tree_view: the object on which the signal is emitted
1298    * @iter: the tree iter of the row to expand
1299    * @path: a tree path that points to the row
1300    *
1301    * The given row is about to be expanded (show its children nodes). Use this
1302    * signal if you need to control the expandability of individual rows.
1303    *
1304    * Returns: %FALSE to allow expansion, %TRUE to reject
1305    */
1306   tree_view_signals[TEST_EXPAND_ROW] =
1307     g_signal_new (I_("test-expand-row"),
1308                   G_TYPE_FROM_CLASS (o_class),
1309                   G_SIGNAL_RUN_LAST,
1310                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1311                   _gtk_boolean_handled_accumulator, NULL,
1312                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1313                   G_TYPE_BOOLEAN, 2,
1314                   GTK_TYPE_TREE_ITER,
1315                   GTK_TYPE_TREE_PATH);
1316
1317   /**
1318    * GtkTreeView::test-collapse-row:
1319    * @tree_view: the object on which the signal is emitted
1320    * @iter: the tree iter of the row to collapse
1321    * @path: a tree path that points to the row
1322    *
1323    * The given row is about to be collapsed (hide its children nodes). Use this
1324    * signal if you need to control the collapsibility of individual rows.
1325    *
1326    * Returns: %FALSE to allow collapsing, %TRUE to reject
1327    */
1328   tree_view_signals[TEST_COLLAPSE_ROW] =
1329     g_signal_new (I_("test-collapse-row"),
1330                   G_TYPE_FROM_CLASS (o_class),
1331                   G_SIGNAL_RUN_LAST,
1332                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1333                   _gtk_boolean_handled_accumulator, NULL,
1334                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1335                   G_TYPE_BOOLEAN, 2,
1336                   GTK_TYPE_TREE_ITER,
1337                   GTK_TYPE_TREE_PATH);
1338
1339   /**
1340    * GtkTreeView::row-expanded:
1341    * @tree_view: the object on which the signal is emitted
1342    * @iter: the tree iter of the expanded row
1343    * @path: a tree path that points to the row
1344    *
1345    * The given row has been expanded (child nodes are shown).
1346    */
1347   tree_view_signals[ROW_EXPANDED] =
1348     g_signal_new (I_("row-expanded"),
1349                   G_TYPE_FROM_CLASS (o_class),
1350                   G_SIGNAL_RUN_LAST,
1351                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1352                   NULL, NULL,
1353                   _gtk_marshal_VOID__BOXED_BOXED,
1354                   G_TYPE_NONE, 2,
1355                   GTK_TYPE_TREE_ITER,
1356                   GTK_TYPE_TREE_PATH);
1357
1358   /**
1359    * GtkTreeView::row-collapsed:
1360    * @tree_view: the object on which the signal is emitted
1361    * @iter: the tree iter of the collapsed row
1362    * @path: a tree path that points to the row
1363    *
1364    * The given row has been collapsed (child nodes are hidden).
1365    */
1366   tree_view_signals[ROW_COLLAPSED] =
1367     g_signal_new (I_("row-collapsed"),
1368                   G_TYPE_FROM_CLASS (o_class),
1369                   G_SIGNAL_RUN_LAST,
1370                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1371                   NULL, NULL,
1372                   _gtk_marshal_VOID__BOXED_BOXED,
1373                   G_TYPE_NONE, 2,
1374                   GTK_TYPE_TREE_ITER,
1375                   GTK_TYPE_TREE_PATH);
1376
1377   /**
1378    * GtkTreeView::columns-changed:
1379    * @tree_view: the object on which the signal is emitted
1380    *
1381    * The number of columns of the treeview has changed.
1382    */
1383   tree_view_signals[COLUMNS_CHANGED] =
1384     g_signal_new (I_("columns-changed"),
1385                   G_TYPE_FROM_CLASS (o_class),
1386                   G_SIGNAL_RUN_LAST,
1387                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1388                   NULL, NULL,
1389                   _gtk_marshal_VOID__VOID,
1390                   G_TYPE_NONE, 0);
1391
1392   /**
1393    * GtkTreeView::cursor-changed:
1394    * @tree_view: the object on which the signal is emitted
1395    *
1396    * The position of the cursor (focused cell) has changed.
1397    */
1398   tree_view_signals[CURSOR_CHANGED] =
1399     g_signal_new (I_("cursor-changed"),
1400                   G_TYPE_FROM_CLASS (o_class),
1401                   G_SIGNAL_RUN_LAST,
1402                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1403                   NULL, NULL,
1404                   _gtk_marshal_VOID__VOID,
1405                   G_TYPE_NONE, 0);
1406
1407   tree_view_signals[MOVE_CURSOR] =
1408     g_signal_new (I_("move-cursor"),
1409                   G_TYPE_FROM_CLASS (o_class),
1410                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1411                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1412                   NULL, NULL,
1413                   _gtk_marshal_BOOLEAN__ENUM_INT,
1414                   G_TYPE_BOOLEAN, 2,
1415                   GTK_TYPE_MOVEMENT_STEP,
1416                   G_TYPE_INT);
1417
1418   tree_view_signals[SELECT_ALL] =
1419     g_signal_new (I_("select-all"),
1420                   G_TYPE_FROM_CLASS (o_class),
1421                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1422                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1423                   NULL, NULL,
1424                   _gtk_marshal_BOOLEAN__VOID,
1425                   G_TYPE_BOOLEAN, 0);
1426
1427   tree_view_signals[UNSELECT_ALL] =
1428     g_signal_new (I_("unselect-all"),
1429                   G_TYPE_FROM_CLASS (o_class),
1430                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1431                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1432                   NULL, NULL,
1433                   _gtk_marshal_BOOLEAN__VOID,
1434                   G_TYPE_BOOLEAN, 0);
1435
1436   tree_view_signals[SELECT_CURSOR_ROW] =
1437     g_signal_new (I_("select-cursor-row"),
1438                   G_TYPE_FROM_CLASS (o_class),
1439                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1440                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1441                   NULL, NULL,
1442                   _gtk_marshal_BOOLEAN__BOOLEAN,
1443                   G_TYPE_BOOLEAN, 1,
1444                   G_TYPE_BOOLEAN);
1445
1446   tree_view_signals[TOGGLE_CURSOR_ROW] =
1447     g_signal_new (I_("toggle-cursor-row"),
1448                   G_TYPE_FROM_CLASS (o_class),
1449                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1450                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1451                   NULL, NULL,
1452                   _gtk_marshal_BOOLEAN__VOID,
1453                   G_TYPE_BOOLEAN, 0);
1454
1455   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1456     g_signal_new (I_("expand-collapse-cursor-row"),
1457                   G_TYPE_FROM_CLASS (o_class),
1458                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1459                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1460                   NULL, NULL,
1461                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1462                   G_TYPE_BOOLEAN, 3,
1463                   G_TYPE_BOOLEAN,
1464                   G_TYPE_BOOLEAN,
1465                   G_TYPE_BOOLEAN);
1466
1467   tree_view_signals[SELECT_CURSOR_PARENT] =
1468     g_signal_new (I_("select-cursor-parent"),
1469                   G_TYPE_FROM_CLASS (o_class),
1470                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1471                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1472                   NULL, NULL,
1473                   _gtk_marshal_BOOLEAN__VOID,
1474                   G_TYPE_BOOLEAN, 0);
1475
1476   tree_view_signals[START_INTERACTIVE_SEARCH] =
1477     g_signal_new (I_("start-interactive-search"),
1478                   G_TYPE_FROM_CLASS (o_class),
1479                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1480                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1481                   NULL, NULL,
1482                   _gtk_marshal_BOOLEAN__VOID,
1483                   G_TYPE_BOOLEAN, 0);
1484
1485   /* Key bindings */
1486   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1487                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1488   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1489                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1490
1491   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1492                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1493   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1494                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1495
1496   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1497                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1498
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1503                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1504   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1505                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1506
1507   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1508                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1509   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1510                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1511
1512   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1513                                   GTK_MOVEMENT_PAGES, -1);
1514   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1515                                   GTK_MOVEMENT_PAGES, -1);
1516
1517   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1518                                   GTK_MOVEMENT_PAGES, 1);
1519   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1520                                   GTK_MOVEMENT_PAGES, 1);
1521
1522
1523   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1524                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1525                                 G_TYPE_INT, 1);
1526
1527   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1528                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1529                                 G_TYPE_INT, -1);
1530
1531   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1532                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1533                                 G_TYPE_INT, 1);
1534
1535   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1536                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1537                                 G_TYPE_INT, -1);
1538
1539   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1540                                 "move-cursor", 2,
1541                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1542                                 G_TYPE_INT, 1);
1543
1544   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1545                                 "move-cursor", 2,
1546                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1547                                 G_TYPE_INT, -1);
1548
1549   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1550                                 "move-cursor", 2,
1551                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1552                                 G_TYPE_INT, 1);
1553
1554   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1555                                 "move-cursor", 2,
1556                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1557                                 G_TYPE_INT, -1);
1558
1559   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1561
1562   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1563   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1569                                 G_TYPE_BOOLEAN, TRUE);
1570   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1571                                 G_TYPE_BOOLEAN, TRUE);
1572
1573   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1574                                 G_TYPE_BOOLEAN, TRUE);
1575   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1576                                 G_TYPE_BOOLEAN, TRUE);
1577   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1578                                 G_TYPE_BOOLEAN, TRUE);
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583
1584   /* expand and collapse rows */
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1586                                 G_TYPE_BOOLEAN, TRUE,
1587                                 G_TYPE_BOOLEAN, TRUE,
1588                                 G_TYPE_BOOLEAN, FALSE);
1589
1590   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1591                                 "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, TRUE);
1595   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1596                                 "expand-collapse-cursor-row", 3,
1597                                 G_TYPE_BOOLEAN, TRUE,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE);
1600
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, FALSE,
1605                                 G_TYPE_BOOLEAN, FALSE);
1606   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1607                                 "expand-collapse-cursor-row", 3,
1608                                 G_TYPE_BOOLEAN, TRUE,
1609                                 G_TYPE_BOOLEAN, FALSE,
1610                                 G_TYPE_BOOLEAN, FALSE);
1611
1612   /* Not doable on US keyboards */
1613   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, TRUE,
1616                                 G_TYPE_BOOLEAN, TRUE);
1617   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1618                                 G_TYPE_BOOLEAN, TRUE,
1619                                 G_TYPE_BOOLEAN, TRUE,
1620                                 G_TYPE_BOOLEAN, FALSE);
1621   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1622                                 G_TYPE_BOOLEAN, TRUE,
1623                                 G_TYPE_BOOLEAN, TRUE,
1624                                 G_TYPE_BOOLEAN, TRUE);
1625   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1626                                 G_TYPE_BOOLEAN, TRUE,
1627                                 G_TYPE_BOOLEAN, TRUE,
1628                                 G_TYPE_BOOLEAN, TRUE);
1629   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1630                                 "expand-collapse-cursor-row", 3,
1631                                 G_TYPE_BOOLEAN, FALSE,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE);
1634   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1635                                 "expand-collapse-cursor-row", 3,
1636                                 G_TYPE_BOOLEAN, FALSE,
1637                                 G_TYPE_BOOLEAN, TRUE,
1638                                 G_TYPE_BOOLEAN, TRUE);
1639   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1640                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651
1652   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1653                                 G_TYPE_BOOLEAN, TRUE,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, FALSE);
1656   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1657                                 G_TYPE_BOOLEAN, TRUE,
1658                                 G_TYPE_BOOLEAN, FALSE,
1659                                 G_TYPE_BOOLEAN, TRUE);
1660   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1661                                 G_TYPE_BOOLEAN, TRUE,
1662                                 G_TYPE_BOOLEAN, FALSE,
1663                                 G_TYPE_BOOLEAN, FALSE);
1664   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1665                                 G_TYPE_BOOLEAN, TRUE,
1666                                 G_TYPE_BOOLEAN, FALSE,
1667                                 G_TYPE_BOOLEAN, TRUE);
1668   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1669                                 "expand-collapse-cursor-row", 3,
1670                                 G_TYPE_BOOLEAN, FALSE,
1671                                 G_TYPE_BOOLEAN, FALSE,
1672                                 G_TYPE_BOOLEAN, TRUE);
1673   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1674                                 "expand-collapse-cursor-row", 3,
1675                                 G_TYPE_BOOLEAN, FALSE,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, TRUE);
1678   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1679                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690
1691   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1692   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1693
1694   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1695
1696   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1697
1698   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1699 }
1700
1701 static void
1702 gtk_tree_view_init (GtkTreeView *tree_view)
1703 {
1704   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1705
1706   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1707   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1708
1709   tree_view->priv->show_expanders = TRUE;
1710   tree_view->priv->draw_keyfocus = TRUE;
1711   tree_view->priv->headers_visible = TRUE;
1712
1713   /* We need some padding */
1714   tree_view->priv->dy = 0;
1715   tree_view->priv->cursor_offset = 0;
1716   tree_view->priv->n_columns = 0;
1717   tree_view->priv->header_height = 1;
1718   tree_view->priv->x_drag = 0;
1719   tree_view->priv->drag_pos = -1;
1720   tree_view->priv->header_has_focus = FALSE;
1721   tree_view->priv->pressed_button = -1;
1722   tree_view->priv->press_start_x = -1;
1723   tree_view->priv->press_start_y = -1;
1724   tree_view->priv->reorderable = FALSE;
1725   tree_view->priv->presize_handler_timer = 0;
1726   tree_view->priv->scroll_sync_timer = 0;
1727   tree_view->priv->fixed_height = -1;
1728   tree_view->priv->fixed_height_mode = FALSE;
1729   tree_view->priv->fixed_height_check = 0;
1730   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1731   tree_view->priv->enable_search = TRUE;
1732   tree_view->priv->search_column = -1;
1733   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1734   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1735   tree_view->priv->search_custom_entry_set = FALSE;
1736   tree_view->priv->typeselect_flush_timeout = 0;
1737   tree_view->priv->init_hadjust_value = TRUE;
1738   tree_view->priv->width = 0;
1739
1740   tree_view->priv->hover_selection = FALSE;
1741   tree_view->priv->hover_expand = FALSE;
1742
1743   tree_view->priv->level_indentation = 0;
1744
1745   tree_view->priv->rubber_banding_enable = FALSE;
1746
1747   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1748   tree_view->priv->tree_lines_enabled = FALSE;
1749
1750   tree_view->priv->tooltip_column = -1;
1751
1752   tree_view->priv->post_validation_flag = FALSE;
1753
1754   tree_view->priv->last_button_x = -1;
1755   tree_view->priv->last_button_y = -1;
1756
1757   tree_view->priv->event_last_x = -10000;
1758   tree_view->priv->event_last_y = -10000;
1759
1760   gtk_tree_view_set_vadjustment (tree_view, NULL);
1761   gtk_tree_view_set_hadjustment (tree_view, NULL);
1762 }
1763
1764 \f
1765
1766 /* GObject Methods
1767  */
1768
1769 static void
1770 gtk_tree_view_set_property (GObject         *object,
1771                             guint            prop_id,
1772                             const GValue    *value,
1773                             GParamSpec      *pspec)
1774 {
1775   GtkTreeView *tree_view;
1776
1777   tree_view = GTK_TREE_VIEW (object);
1778
1779   switch (prop_id)
1780     {
1781     case PROP_MODEL:
1782       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1783       break;
1784     case PROP_HADJUSTMENT:
1785       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1786       break;
1787     case PROP_VADJUSTMENT:
1788       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1789       break;
1790     case PROP_HSCROLL_POLICY:
1791       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1792       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1793       break;
1794     case PROP_VSCROLL_POLICY:
1795       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1796       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1797       break;
1798     case PROP_HEADERS_VISIBLE:
1799       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1800       break;
1801     case PROP_HEADERS_CLICKABLE:
1802       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1803       break;
1804     case PROP_EXPANDER_COLUMN:
1805       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1806       break;
1807     case PROP_REORDERABLE:
1808       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1809       break;
1810     case PROP_RULES_HINT:
1811       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1812       break;
1813     case PROP_ENABLE_SEARCH:
1814       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1815       break;
1816     case PROP_SEARCH_COLUMN:
1817       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1818       break;
1819     case PROP_FIXED_HEIGHT_MODE:
1820       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1821       break;
1822     case PROP_HOVER_SELECTION:
1823       tree_view->priv->hover_selection = g_value_get_boolean (value);
1824       break;
1825     case PROP_HOVER_EXPAND:
1826       tree_view->priv->hover_expand = g_value_get_boolean (value);
1827       break;
1828     case PROP_SHOW_EXPANDERS:
1829       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1830       break;
1831     case PROP_LEVEL_INDENTATION:
1832       tree_view->priv->level_indentation = g_value_get_int (value);
1833       break;
1834     case PROP_RUBBER_BANDING:
1835       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1836       break;
1837     case PROP_ENABLE_GRID_LINES:
1838       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1839       break;
1840     case PROP_ENABLE_TREE_LINES:
1841       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1842       break;
1843     case PROP_TOOLTIP_COLUMN:
1844       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1845       break;
1846     default:
1847       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1848       break;
1849     }
1850 }
1851
1852 static void
1853 gtk_tree_view_get_property (GObject    *object,
1854                             guint       prop_id,
1855                             GValue     *value,
1856                             GParamSpec *pspec)
1857 {
1858   GtkTreeView *tree_view;
1859
1860   tree_view = GTK_TREE_VIEW (object);
1861
1862   switch (prop_id)
1863     {
1864     case PROP_MODEL:
1865       g_value_set_object (value, tree_view->priv->model);
1866       break;
1867     case PROP_HADJUSTMENT:
1868       g_value_set_object (value, tree_view->priv->hadjustment);
1869       break;
1870     case PROP_VADJUSTMENT:
1871       g_value_set_object (value, tree_view->priv->vadjustment);
1872       break;
1873     case PROP_HSCROLL_POLICY:
1874       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1875       break;
1876     case PROP_VSCROLL_POLICY:
1877       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1878       break;
1879     case PROP_HEADERS_VISIBLE:
1880       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1881       break;
1882     case PROP_HEADERS_CLICKABLE:
1883       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1884       break;
1885     case PROP_EXPANDER_COLUMN:
1886       g_value_set_object (value, tree_view->priv->expander_column);
1887       break;
1888     case PROP_REORDERABLE:
1889       g_value_set_boolean (value, tree_view->priv->reorderable);
1890       break;
1891     case PROP_RULES_HINT:
1892       g_value_set_boolean (value, tree_view->priv->has_rules);
1893       break;
1894     case PROP_ENABLE_SEARCH:
1895       g_value_set_boolean (value, tree_view->priv->enable_search);
1896       break;
1897     case PROP_SEARCH_COLUMN:
1898       g_value_set_int (value, tree_view->priv->search_column);
1899       break;
1900     case PROP_FIXED_HEIGHT_MODE:
1901       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1902       break;
1903     case PROP_HOVER_SELECTION:
1904       g_value_set_boolean (value, tree_view->priv->hover_selection);
1905       break;
1906     case PROP_HOVER_EXPAND:
1907       g_value_set_boolean (value, tree_view->priv->hover_expand);
1908       break;
1909     case PROP_SHOW_EXPANDERS:
1910       g_value_set_boolean (value, tree_view->priv->show_expanders);
1911       break;
1912     case PROP_LEVEL_INDENTATION:
1913       g_value_set_int (value, tree_view->priv->level_indentation);
1914       break;
1915     case PROP_RUBBER_BANDING:
1916       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1917       break;
1918     case PROP_ENABLE_GRID_LINES:
1919       g_value_set_enum (value, tree_view->priv->grid_lines);
1920       break;
1921     case PROP_ENABLE_TREE_LINES:
1922       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1923       break;
1924     case PROP_TOOLTIP_COLUMN:
1925       g_value_set_int (value, tree_view->priv->tooltip_column);
1926       break;
1927     default:
1928       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1929       break;
1930     }
1931 }
1932
1933 static void
1934 gtk_tree_view_finalize (GObject *object)
1935 {
1936   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1937 }
1938
1939
1940 static GtkBuildableIface *parent_buildable_iface;
1941
1942 static void
1943 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1944 {
1945   parent_buildable_iface = g_type_interface_peek_parent (iface);
1946   iface->add_child = gtk_tree_view_buildable_add_child;
1947   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1948 }
1949
1950 static void
1951 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1952                                    GtkBuilder  *builder,
1953                                    GObject     *child,
1954                                    const gchar *type)
1955 {
1956   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1957 }
1958
1959 static GObject *
1960 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1961                                             GtkBuilder        *builder,
1962                                             const gchar       *childname)
1963 {
1964     if (strcmp (childname, "selection") == 0)
1965       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1966
1967     return parent_buildable_iface->get_internal_child (buildable,
1968                                                        builder,
1969                                                        childname);
1970 }
1971
1972 /* GtkWidget Methods
1973  */
1974
1975 static void
1976 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1977 {
1978   _gtk_rbtree_free (tree_view->priv->tree);
1979
1980   tree_view->priv->tree = NULL;
1981   tree_view->priv->button_pressed_node = NULL;
1982   tree_view->priv->button_pressed_tree = NULL;
1983   tree_view->priv->prelight_tree = NULL;
1984   tree_view->priv->prelight_node = NULL;
1985   tree_view->priv->expanded_collapsed_node = NULL;
1986   tree_view->priv->expanded_collapsed_tree = NULL;
1987 }
1988
1989 static void
1990 gtk_tree_view_destroy (GtkWidget *widget)
1991 {
1992   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1993   GList *list;
1994
1995   gtk_tree_view_stop_editing (tree_view, TRUE);
1996
1997   if (tree_view->priv->columns != NULL)
1998     {
1999       list = tree_view->priv->columns;
2000       while (list)
2001         {
2002           GtkTreeViewColumn *column;
2003           column = GTK_TREE_VIEW_COLUMN (list->data);
2004           list = list->next;
2005           gtk_tree_view_remove_column (tree_view, column);
2006         }
2007       tree_view->priv->columns = NULL;
2008     }
2009
2010   if (tree_view->priv->tree != NULL)
2011     {
2012       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2013
2014       gtk_tree_view_free_rbtree (tree_view);
2015     }
2016
2017   if (tree_view->priv->selection != NULL)
2018     {
2019       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2020       g_object_unref (tree_view->priv->selection);
2021       tree_view->priv->selection = NULL;
2022     }
2023
2024   if (tree_view->priv->scroll_to_path != NULL)
2025     {
2026       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2027       tree_view->priv->scroll_to_path = NULL;
2028     }
2029
2030   if (tree_view->priv->drag_dest_row != NULL)
2031     {
2032       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2033       tree_view->priv->drag_dest_row = NULL;
2034     }
2035
2036   if (tree_view->priv->top_row != NULL)
2037     {
2038       gtk_tree_row_reference_free (tree_view->priv->top_row);
2039       tree_view->priv->top_row = NULL;
2040     }
2041
2042   if (tree_view->priv->column_drop_func_data &&
2043       tree_view->priv->column_drop_func_data_destroy)
2044     {
2045       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2046       tree_view->priv->column_drop_func_data = NULL;
2047     }
2048
2049   if (tree_view->priv->destroy_count_destroy &&
2050       tree_view->priv->destroy_count_data)
2051     {
2052       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2053       tree_view->priv->destroy_count_data = NULL;
2054     }
2055
2056   gtk_tree_row_reference_free (tree_view->priv->cursor);
2057   tree_view->priv->cursor = NULL;
2058
2059   gtk_tree_row_reference_free (tree_view->priv->anchor);
2060   tree_view->priv->anchor = NULL;
2061
2062   /* destroy interactive search dialog */
2063   if (tree_view->priv->search_window)
2064     {
2065       gtk_widget_destroy (tree_view->priv->search_window);
2066       tree_view->priv->search_window = NULL;
2067       tree_view->priv->search_entry = NULL;
2068       if (tree_view->priv->typeselect_flush_timeout)
2069         {
2070           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2071           tree_view->priv->typeselect_flush_timeout = 0;
2072         }
2073     }
2074
2075   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2076     {
2077       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2078       tree_view->priv->search_user_data = NULL;
2079     }
2080
2081   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2082     {
2083       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2084       tree_view->priv->search_position_user_data = NULL;
2085     }
2086
2087   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2088     {
2089       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2090       tree_view->priv->row_separator_data = NULL;
2091     }
2092
2093   gtk_tree_view_set_model (tree_view, NULL);
2094
2095   if (tree_view->priv->hadjustment)
2096     {
2097       g_object_unref (tree_view->priv->hadjustment);
2098       tree_view->priv->hadjustment = NULL;
2099     }
2100   if (tree_view->priv->vadjustment)
2101     {
2102       g_object_unref (tree_view->priv->vadjustment);
2103       tree_view->priv->vadjustment = NULL;
2104     }
2105
2106   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2107 }
2108
2109 /* GtkWidget::map helper */
2110 static void
2111 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2112 {
2113   GList *list;
2114
2115   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2116
2117   if (tree_view->priv->headers_visible)
2118     {
2119       GtkTreeViewColumn *column;
2120       GtkWidget         *button;
2121       GdkWindow         *window;
2122
2123       for (list = tree_view->priv->columns; list; list = list->next)
2124         {
2125           column = list->data;
2126           button = gtk_tree_view_column_get_button (column);
2127
2128           if (gtk_tree_view_column_get_visible (column) && button)
2129             gtk_widget_show_now (button);
2130
2131           if (gtk_widget_get_visible (button) &&
2132               !gtk_widget_get_mapped (button))
2133             gtk_widget_map (button);
2134         }
2135       for (list = tree_view->priv->columns; list; list = list->next)
2136         {
2137           column = list->data;
2138           if (gtk_tree_view_column_get_visible (column) == FALSE)
2139             continue;
2140
2141           window = _gtk_tree_view_column_get_window (column);
2142           if (gtk_tree_view_column_get_resizable (column))
2143             {
2144               gdk_window_raise (window);
2145               gdk_window_show (window);
2146             }
2147           else
2148             gdk_window_hide (window);
2149         }
2150       gdk_window_show (tree_view->priv->header_window);
2151     }
2152 }
2153
2154 static void
2155 gtk_tree_view_map (GtkWidget *widget)
2156 {
2157   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2158   GList *tmp_list;
2159
2160   gtk_widget_set_mapped (widget, TRUE);
2161
2162   tmp_list = tree_view->priv->children;
2163   while (tmp_list)
2164     {
2165       GtkTreeViewChild *child = tmp_list->data;
2166       tmp_list = tmp_list->next;
2167
2168       if (gtk_widget_get_visible (child->widget))
2169         {
2170           if (!gtk_widget_get_mapped (child->widget))
2171             gtk_widget_map (child->widget);
2172         }
2173     }
2174   gdk_window_show (tree_view->priv->bin_window);
2175
2176   gtk_tree_view_map_buttons (tree_view);
2177
2178   gdk_window_show (gtk_widget_get_window (widget));
2179 }
2180
2181 static void
2182 gtk_tree_view_realize (GtkWidget *widget)
2183 {
2184   GtkAllocation allocation;
2185   GtkStyleContext *context;
2186   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2187   GdkWindow *window;
2188   GdkWindowAttr attributes;
2189   GList *tmp_list;
2190   gint attributes_mask;
2191
2192   gtk_widget_set_realized (widget, TRUE);
2193
2194   gtk_widget_get_allocation (widget, &allocation);
2195
2196   /* Make the main, clipping window */
2197   attributes.window_type = GDK_WINDOW_CHILD;
2198   attributes.x = allocation.x;
2199   attributes.y = allocation.y;
2200   attributes.width = allocation.width;
2201   attributes.height = allocation.height;
2202   attributes.wclass = GDK_INPUT_OUTPUT;
2203   attributes.visual = gtk_widget_get_visual (widget);
2204   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2205
2206   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2207
2208   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2209                            &attributes, attributes_mask);
2210   gtk_widget_set_window (widget, window);
2211   gdk_window_set_user_data (window, widget);
2212
2213   gtk_widget_get_allocation (widget, &allocation);
2214
2215   /* Make the window for the tree */
2216   attributes.x = 0;
2217   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2218   attributes.width = MAX (tree_view->priv->width, allocation.width);
2219   attributes.height = allocation.height;
2220   attributes.event_mask = (GDK_EXPOSURE_MASK |
2221                            GDK_SCROLL_MASK |
2222                            GDK_POINTER_MOTION_MASK |
2223                            GDK_ENTER_NOTIFY_MASK |
2224                            GDK_LEAVE_NOTIFY_MASK |
2225                            GDK_BUTTON_PRESS_MASK |
2226                            GDK_BUTTON_RELEASE_MASK |
2227                            gtk_widget_get_events (widget));
2228
2229   tree_view->priv->bin_window = gdk_window_new (window,
2230                                                 &attributes, attributes_mask);
2231   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2232
2233   gtk_widget_get_allocation (widget, &allocation);
2234
2235   /* Make the column header window */
2236   attributes.x = 0;
2237   attributes.y = 0;
2238   attributes.width = MAX (tree_view->priv->width, allocation.width);
2239   attributes.height = tree_view->priv->header_height;
2240   attributes.event_mask = (GDK_EXPOSURE_MASK |
2241                            GDK_SCROLL_MASK |
2242                            GDK_ENTER_NOTIFY_MASK |
2243                            GDK_LEAVE_NOTIFY_MASK |
2244                            GDK_BUTTON_PRESS_MASK |
2245                            GDK_BUTTON_RELEASE_MASK |
2246                            GDK_KEY_PRESS_MASK |
2247                            GDK_KEY_RELEASE_MASK |
2248                            gtk_widget_get_events (widget));
2249
2250   tree_view->priv->header_window = gdk_window_new (window,
2251                                                    &attributes, attributes_mask);
2252   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2253
2254   context = gtk_widget_get_style_context (widget);
2255
2256   gtk_style_context_save (context);
2257   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2258   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2259   gtk_style_context_restore (context);
2260
2261   gtk_style_context_set_background (context, tree_view->priv->header_window);
2262
2263   tmp_list = tree_view->priv->children;
2264   while (tmp_list)
2265     {
2266       GtkTreeViewChild *child = tmp_list->data;
2267       tmp_list = tmp_list->next;
2268
2269       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2270     }
2271
2272   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2273     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2274
2275   /* Need to call those here, since they create GCs */
2276   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2277   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2278
2279   install_presize_handler (tree_view);
2280 }
2281
2282 static void
2283 gtk_tree_view_unrealize (GtkWidget *widget)
2284 {
2285   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2286   GtkTreeViewPrivate *priv = tree_view->priv;
2287   GtkStyleContext *context;
2288   GList *list;
2289
2290   if (priv->scroll_timeout != 0)
2291     {
2292       g_source_remove (priv->scroll_timeout);
2293       priv->scroll_timeout = 0;
2294     }
2295
2296   if (priv->auto_expand_timeout != 0)
2297     {
2298       g_source_remove (priv->auto_expand_timeout);
2299       priv->auto_expand_timeout = 0;
2300     }
2301
2302   if (priv->open_dest_timeout != 0)
2303     {
2304       g_source_remove (priv->open_dest_timeout);
2305       priv->open_dest_timeout = 0;
2306     }
2307
2308   context = gtk_widget_get_style_context (widget);
2309   gtk_style_context_cancel_animations (context, NULL);
2310
2311   if (priv->presize_handler_timer != 0)
2312     {
2313       g_source_remove (priv->presize_handler_timer);
2314       priv->presize_handler_timer = 0;
2315     }
2316
2317   if (priv->validate_rows_timer != 0)
2318     {
2319       g_source_remove (priv->validate_rows_timer);
2320       priv->validate_rows_timer = 0;
2321     }
2322
2323   if (priv->scroll_sync_timer != 0)
2324     {
2325       g_source_remove (priv->scroll_sync_timer);
2326       priv->scroll_sync_timer = 0;
2327     }
2328
2329   if (priv->typeselect_flush_timeout)
2330     {
2331       g_source_remove (priv->typeselect_flush_timeout);
2332       priv->typeselect_flush_timeout = 0;
2333     }
2334
2335   for (list = priv->columns; list; list = list->next)
2336     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2337
2338   gdk_window_set_user_data (priv->bin_window, NULL);
2339   gdk_window_destroy (priv->bin_window);
2340   priv->bin_window = NULL;
2341
2342   gdk_window_set_user_data (priv->header_window, NULL);
2343   gdk_window_destroy (priv->header_window);
2344   priv->header_window = NULL;
2345
2346   if (priv->drag_window)
2347     {
2348       gdk_window_set_user_data (priv->drag_window, NULL);
2349       gdk_window_destroy (priv->drag_window);
2350       priv->drag_window = NULL;
2351     }
2352
2353   if (priv->drag_highlight_window)
2354     {
2355       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2356       gdk_window_destroy (priv->drag_highlight_window);
2357       priv->drag_highlight_window = NULL;
2358     }
2359
2360   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2361 }
2362
2363 /* GtkWidget::size_request helper */
2364 static void
2365 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2366 {
2367   GList *list;
2368
2369   tree_view->priv->header_height = 0;
2370
2371   if (tree_view->priv->model)
2372     {
2373       for (list = tree_view->priv->columns; list; list = list->next)
2374         {
2375           GtkRequisition     requisition;
2376           GtkTreeViewColumn *column = list->data;
2377           GtkWidget         *button = gtk_tree_view_column_get_button (column);
2378
2379           if (button == NULL)
2380             continue;
2381
2382           column = list->data;
2383
2384           gtk_widget_get_preferred_size (button, &requisition, NULL);
2385           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2386         }
2387     }
2388 }
2389
2390
2391 /* Called only by ::size_request */
2392 static void
2393 gtk_tree_view_update_size (GtkTreeView *tree_view)
2394 {
2395   GList *list;
2396   GtkTreeViewColumn *column;
2397   gint i;
2398
2399   if (tree_view->priv->model == NULL)
2400     {
2401       tree_view->priv->width = 0;
2402       tree_view->priv->prev_width = 0;
2403       tree_view->priv->height = 0;
2404       return;
2405     }
2406
2407   tree_view->priv->prev_width = tree_view->priv->width;
2408   tree_view->priv->width = 0;
2409
2410   /* keep this in sync with size_allocate below */
2411   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2412     {
2413       column = list->data;
2414       if (!gtk_tree_view_column_get_visible (column))
2415         continue;
2416
2417       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2418     }
2419
2420   if (tree_view->priv->tree == NULL)
2421     tree_view->priv->height = 0;
2422   else
2423     tree_view->priv->height = tree_view->priv->tree->root->offset;
2424 }
2425
2426 static void
2427 gtk_tree_view_size_request (GtkWidget      *widget,
2428                             GtkRequisition *requisition,
2429                             gboolean        may_validate)
2430 {
2431   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2432
2433   if (may_validate)
2434     {
2435       /* we validate some rows initially just to make sure we have some size.
2436        * In practice, with a lot of static lists, this should get a good width.
2437        */
2438       do_validate_rows (tree_view, FALSE);
2439     }
2440
2441   gtk_tree_view_size_request_columns (tree_view);
2442   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2443
2444   requisition->width = tree_view->priv->width;
2445   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2446 }
2447
2448 static void
2449 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2450                                    gint      *minimum,
2451                                    gint      *natural)
2452 {
2453   GtkRequisition requisition;
2454
2455   gtk_tree_view_size_request (widget, &requisition, TRUE);
2456
2457   *minimum = *natural = requisition.width;
2458 }
2459
2460 static void
2461 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2462                                     gint      *minimum,
2463                                     gint      *natural)
2464 {
2465   GtkRequisition requisition;
2466
2467   gtk_tree_view_size_request (widget, &requisition, TRUE);
2468
2469   *minimum = *natural = requisition.height;
2470 }
2471
2472 static int
2473 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2474 {
2475   int width = 0;
2476   GList *list;
2477   gboolean rtl;
2478
2479   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2480   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2481        list->data != tree_view->priv->expander_column;
2482        list = (rtl ? list->prev : list->next))
2483     {
2484       GtkTreeViewColumn *column = list->data;
2485
2486       width += gtk_tree_view_column_get_width (column);
2487     }
2488
2489   return width;
2490 }
2491
2492 /* GtkWidget::size_allocate helper */
2493 static void
2494 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2495                                      gboolean  *width_changed)
2496 {
2497   GtkTreeView *tree_view;
2498   GList *list, *first_column, *last_column;
2499   GtkTreeViewColumn *column;
2500   GtkAllocation widget_allocation;
2501   gint width = 0;
2502   gint extra, extra_per_column, extra_for_last;
2503   gint full_requested_width = 0;
2504   gint number_of_expand_columns = 0;
2505   gboolean rtl;
2506   gboolean update_expand;
2507
2508   tree_view = GTK_TREE_VIEW (widget);
2509
2510   for (last_column = g_list_last (tree_view->priv->columns);
2511        last_column &&
2512        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2513        last_column = last_column->prev)
2514     ;
2515   if (last_column == NULL)
2516     return;
2517
2518   for (first_column = g_list_first (tree_view->priv->columns);
2519        first_column &&
2520        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2521        first_column = first_column->next)
2522     ;
2523
2524   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2525
2526   /* find out how many extra space and expandable columns we have */
2527   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2528     {
2529       column = (GtkTreeViewColumn *)list->data;
2530
2531       if (!gtk_tree_view_column_get_visible (column))
2532         continue;
2533
2534       full_requested_width += _gtk_tree_view_column_request_width (column);
2535
2536       if (gtk_tree_view_column_get_expand (column))
2537         number_of_expand_columns++;
2538     }
2539
2540   /* Only update the expand value if the width of the widget has changed,
2541    * or the number of expand columns has changed, or if there are no expand
2542    * columns, or if we didn't have an size-allocation yet after the
2543    * last validated node.
2544    */
2545   update_expand = (width_changed && *width_changed == TRUE)
2546       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2547       || number_of_expand_columns == 0
2548       || tree_view->priv->post_validation_flag == TRUE;
2549
2550   tree_view->priv->post_validation_flag = FALSE;
2551
2552   gtk_widget_get_allocation (widget, &widget_allocation);
2553   if (!update_expand)
2554     {
2555       extra = tree_view->priv->last_extra_space;
2556       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2557     }
2558   else
2559     {
2560       extra = MAX (widget_allocation.width - full_requested_width, 0);
2561       extra_for_last = 0;
2562
2563       tree_view->priv->last_extra_space = extra;
2564     }
2565
2566   if (number_of_expand_columns > 0)
2567     extra_per_column = extra/number_of_expand_columns;
2568   else
2569     extra_per_column = 0;
2570
2571   if (update_expand)
2572     {
2573       tree_view->priv->last_extra_space_per_column = extra_per_column;
2574       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2575     }
2576
2577   for (list = (rtl ? last_column : first_column);
2578        list != (rtl ? first_column->prev : last_column->next);
2579        list = (rtl ? list->prev : list->next))
2580     {
2581       gint old_width, column_width;
2582
2583       column = list->data;
2584       old_width = gtk_tree_view_column_get_width (column);
2585
2586       if (!gtk_tree_view_column_get_visible (column))
2587         continue;
2588
2589       /* We need to handle the dragged button specially.
2590        */
2591       if (column == tree_view->priv->drag_column)
2592         {
2593           GtkAllocation drag_allocation;
2594           GtkWidget    *button;
2595
2596           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2597
2598           drag_allocation.x = 0;
2599           drag_allocation.y = 0;
2600           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2601           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2602           gtk_widget_size_allocate (button, &drag_allocation);
2603           width += drag_allocation.width;
2604           continue;
2605         }
2606
2607       column_width = _gtk_tree_view_column_request_width (column);
2608
2609       if (gtk_tree_view_column_get_expand (column))
2610         {
2611           if (number_of_expand_columns == 1)
2612             {
2613               /* We add the remander to the last column as
2614                * */
2615               column_width += extra;
2616             }
2617           else
2618             {
2619               column_width += extra_per_column;
2620               extra -= extra_per_column;
2621               number_of_expand_columns --;
2622             }
2623         }
2624       else if (number_of_expand_columns == 0 &&
2625                list == last_column)
2626         {
2627           column_width += extra;
2628         }
2629
2630       /* In addition to expand, the last column can get even more
2631        * extra space so all available space is filled up.
2632        */
2633       if (extra_for_last > 0 && list == last_column)
2634         column_width += extra_for_last;
2635
2636       _gtk_tree_view_column_allocate (column, width, column_width);
2637
2638       width += column_width;
2639     }
2640
2641   /* We change the width here.  The user might have been resizing columns,
2642    * which changes the total width of the tree view.  This is of
2643    * importance for getting the horizontal scroll bar right.
2644    */
2645   if (tree_view->priv->width != width)
2646     {
2647       tree_view->priv->width = width;
2648       if (width_changed)
2649         *width_changed = TRUE;
2650     }
2651 }
2652
2653
2654 static void
2655 gtk_tree_view_size_allocate (GtkWidget     *widget,
2656                              GtkAllocation *allocation)
2657 {
2658   GtkAllocation widget_allocation;
2659   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2660   GList *tmp_list;
2661   gboolean width_changed = FALSE;
2662   gint old_width;
2663
2664   gtk_widget_get_allocation (widget, &widget_allocation);
2665   old_width = widget_allocation.width;
2666   if (allocation->width != widget_allocation.width)
2667     width_changed = TRUE;
2668
2669   gtk_widget_set_allocation (widget, allocation);
2670
2671   tmp_list = tree_view->priv->children;
2672
2673   while (tmp_list)
2674     {
2675       GtkAllocation allocation;
2676
2677       GtkTreeViewChild *child = tmp_list->data;
2678       tmp_list = tmp_list->next;
2679
2680       /* totally ignore our child's requisition */
2681       allocation.x = child->x;
2682       allocation.y = child->y;
2683       allocation.width = child->width;
2684       allocation.height = child->height;
2685       gtk_widget_size_allocate (child->widget, &allocation);
2686     }
2687
2688   /* We size-allocate the columns first because the width of the
2689    * tree view (used in updating the adjustments below) might change.
2690    */
2691   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2692
2693   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2694   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2695                                 allocation->width);
2696   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2697                                      allocation->width * 0.9);
2698   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2699                                      allocation->width * 0.1);
2700   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2701   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2702                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2703                                  tree_view->priv->width));
2704   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2705
2706   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2707     {
2708       if (allocation->width < tree_view->priv->width)
2709         {
2710           if (tree_view->priv->init_hadjust_value)
2711             {
2712               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2713                                         MAX (tree_view->priv->width -
2714                                              allocation->width, 0));
2715               tree_view->priv->init_hadjust_value = FALSE;
2716             }
2717           else if (allocation->width != old_width)
2718             {
2719               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2720                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2721                                                0,
2722                                                tree_view->priv->width - allocation->width));
2723             }
2724           else
2725             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2726                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2727                                              0,
2728                                              tree_view->priv->width - allocation->width));
2729         }
2730       else
2731         {
2732           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2733           tree_view->priv->init_hadjust_value = TRUE;
2734         }
2735     }
2736   else
2737     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2738       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2739                                 MAX (tree_view->priv->width -
2740                                      allocation->width, 0));
2741
2742   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2743   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2744                                 allocation->height -
2745                                 gtk_tree_view_get_effective_header_height (tree_view));
2746   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2747                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2748   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2749                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2750   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2751   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2752                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2753                                  tree_view->priv->height));
2754   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2755
2756   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2757   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2758     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2759   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2760     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2761                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2762   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2763     gtk_tree_view_top_row_to_dy (tree_view);
2764   else
2765     gtk_tree_view_dy_to_top_row (tree_view);
2766
2767   if (gtk_widget_get_realized (widget))
2768     {
2769       gboolean has_expand_column = FALSE;
2770
2771       gdk_window_move_resize (gtk_widget_get_window (widget),
2772                               allocation->x, allocation->y,
2773                               allocation->width, allocation->height);
2774       gdk_window_move_resize (tree_view->priv->header_window,
2775                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2776                               0,
2777                               MAX (tree_view->priv->width, allocation->width),
2778                               tree_view->priv->header_height);
2779       gdk_window_move_resize (tree_view->priv->bin_window,
2780                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2781                               gtk_tree_view_get_effective_header_height (tree_view),
2782                               MAX (tree_view->priv->width, allocation->width),
2783                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2784
2785       if (tree_view->priv->tree == NULL)
2786         invalidate_empty_focus (tree_view);
2787
2788       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2789         {
2790           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2791             {
2792               has_expand_column = TRUE;
2793               break;
2794             }
2795         }
2796
2797       if (width_changed && tree_view->priv->expander_column)
2798         {
2799           /* Might seem awkward, but is the best heuristic I could come up
2800            * with.  Only if the width of the columns before the expander
2801            * changes, we will update the prelight status.  It is this
2802            * width that makes the expander move vertically.  Always updating
2803            * prelight status causes trouble with hover selections.
2804            */
2805           gint width_before_expander;
2806
2807           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2808
2809           if (tree_view->priv->prev_width_before_expander
2810               != width_before_expander)
2811               update_prelight (tree_view,
2812                                tree_view->priv->event_last_x,
2813                                tree_view->priv->event_last_y);
2814
2815           tree_view->priv->prev_width_before_expander = width_before_expander;
2816         }
2817     }
2818 }
2819
2820 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2821 static void
2822 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2823 {
2824   GtkWidget *widget = GTK_WIDGET (tree_view);
2825
2826   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2827     gtk_widget_grab_focus (widget);
2828   tree_view->priv->draw_keyfocus = 0;
2829 }
2830
2831 static inline gboolean
2832 row_is_separator (GtkTreeView *tree_view,
2833                   GtkTreeIter *iter,
2834                   GtkTreePath *path)
2835 {
2836   gboolean is_separator = FALSE;
2837
2838   if (tree_view->priv->row_separator_func)
2839     {
2840       GtkTreeIter tmpiter;
2841
2842       if (iter)
2843         tmpiter = *iter;
2844       else
2845         {
2846           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2847             return FALSE;
2848         }
2849
2850       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2851                                                           &tmpiter,
2852                                                           tree_view->priv->row_separator_data);
2853     }
2854
2855   return is_separator;
2856 }
2857
2858 static gboolean
2859 gtk_tree_view_button_press (GtkWidget      *widget,
2860                             GdkEventButton *event)
2861 {
2862   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2863   GList *list;
2864   GtkTreeViewColumn *column = NULL;
2865   gint i;
2866   GdkRectangle background_area;
2867   GdkRectangle cell_area;
2868   gint vertical_separator;
2869   gint horizontal_separator;
2870   gboolean path_is_selectable;
2871   gboolean rtl;
2872
2873   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2874   gtk_tree_view_stop_editing (tree_view, FALSE);
2875   gtk_widget_style_get (widget,
2876                         "vertical-separator", &vertical_separator,
2877                         "horizontal-separator", &horizontal_separator,
2878                         NULL);
2879
2880   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2881    * we're done handling the button press.
2882    */
2883
2884   if (event->window == tree_view->priv->bin_window)
2885     {
2886       GtkRBNode *node;
2887       GtkRBTree *tree;
2888       GtkTreePath *path;
2889       gint depth;
2890       gint new_y;
2891       gint y_offset;
2892       gint dval;
2893       gint pre_val, aft_val;
2894       GtkTreeViewColumn *column = NULL;
2895       gint column_handled_click = FALSE;
2896       gboolean row_double_click = FALSE;
2897       gboolean rtl;
2898       gboolean node_selected;
2899
2900       /* Empty tree? */
2901       if (tree_view->priv->tree == NULL)
2902         {
2903           grab_focus_and_unset_draw_keyfocus (tree_view);
2904           return TRUE;
2905         }
2906
2907       /* are we in an arrow? */
2908       if (tree_view->priv->prelight_node &&
2909           tree_view->priv->arrow_prelit &&
2910           gtk_tree_view_draw_expanders (tree_view))
2911         {
2912           if (event->button == 1)
2913             {
2914               gtk_grab_add (widget);
2915               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2916               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2917               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2918                                               tree_view->priv->prelight_tree,
2919                                               tree_view->priv->prelight_node);
2920             }
2921
2922           grab_focus_and_unset_draw_keyfocus (tree_view);
2923           return TRUE;
2924         }
2925
2926       /* find the node that was clicked */
2927       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2928       if (new_y < 0)
2929         new_y = 0;
2930       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2931
2932       if (node == NULL)
2933         {
2934           /* We clicked in dead space */
2935           grab_focus_and_unset_draw_keyfocus (tree_view);
2936           return TRUE;
2937         }
2938
2939       /* Get the path and the node */
2940       path = _gtk_tree_view_find_path (tree_view, tree, node);
2941       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2942
2943       if (!path_is_selectable)
2944         {
2945           gtk_tree_path_free (path);
2946           grab_focus_and_unset_draw_keyfocus (tree_view);
2947           return TRUE;
2948         }
2949
2950       depth = gtk_tree_path_get_depth (path);
2951       background_area.y = y_offset + event->y;
2952       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2953       background_area.x = 0;
2954
2955
2956       /* Let the column have a chance at selecting it. */
2957       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2958       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2959            list; list = (rtl ? list->prev : list->next))
2960         {
2961           GtkTreeViewColumn *candidate = list->data;
2962
2963           if (!gtk_tree_view_column_get_visible (candidate))
2964             continue;
2965
2966           background_area.width = gtk_tree_view_column_get_width (candidate);
2967           if ((background_area.x > (gint) event->x) ||
2968               (background_area.x + background_area.width <= (gint) event->x))
2969             {
2970               background_area.x += background_area.width;
2971               continue;
2972             }
2973
2974           /* we found the focus column */
2975           column = candidate;
2976           cell_area = background_area;
2977           cell_area.width -= horizontal_separator;
2978           cell_area.height -= vertical_separator;
2979           cell_area.x += horizontal_separator/2;
2980           cell_area.y += vertical_separator/2;
2981           if (gtk_tree_view_is_expander_column (tree_view, column))
2982             {
2983               if (!rtl)
2984                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2985               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2986
2987               if (gtk_tree_view_draw_expanders (tree_view))
2988                 {
2989                   if (!rtl)
2990                     cell_area.x += depth * tree_view->priv->expander_size;
2991                   cell_area.width -= depth * tree_view->priv->expander_size;
2992                 }
2993             }
2994           break;
2995         }
2996
2997       if (column == NULL)
2998         {
2999           gtk_tree_path_free (path);
3000           grab_focus_and_unset_draw_keyfocus (tree_view);
3001           return FALSE;
3002         }
3003
3004       tree_view->priv->focus_column = column;
3005
3006       /* decide if we edit */
3007       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3008           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3009         {
3010           GtkTreePath *anchor;
3011           GtkTreeIter iter;
3012
3013           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3014           gtk_tree_view_column_cell_set_cell_data (column,
3015                                                    tree_view->priv->model,
3016                                                    &iter,
3017                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3018                                                    node->children?TRUE:FALSE);
3019
3020           if (tree_view->priv->anchor)
3021             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3022           else
3023             anchor = NULL;
3024
3025           if ((anchor && !gtk_tree_path_compare (anchor, path))
3026               || !_gtk_tree_view_column_has_editable_cell (column))
3027             {
3028               GtkCellEditable *cell_editable = NULL;
3029
3030               /* FIXME: get the right flags */
3031               guint flags = 0;
3032
3033               if (_gtk_tree_view_column_cell_event (column,
3034                                                     (GdkEvent *)event,
3035                                                     &cell_area, flags))
3036                 {
3037                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3038                   cell_editable = gtk_cell_area_get_edit_widget (area);
3039
3040                   if (cell_editable != NULL)
3041                     {
3042                       gtk_tree_path_free (path);
3043                       gtk_tree_path_free (anchor);
3044                       return TRUE;
3045                     }
3046                   column_handled_click = TRUE;
3047                 }
3048             }
3049           if (anchor)
3050             gtk_tree_path_free (anchor);
3051         }
3052
3053       /* select */
3054       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3055       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3056
3057       /* we only handle selection modifications on the first button press
3058        */
3059       if (event->type == GDK_BUTTON_PRESS)
3060         {
3061           GtkCellRenderer *focus_cell;
3062
3063           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3064             tree_view->priv->ctrl_pressed = TRUE;
3065           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
3066             tree_view->priv->shift_pressed = TRUE;
3067
3068           /* We update the focus cell here, this is also needed if the
3069            * column does not contain an editable cell.  In this case,
3070            * GtkCellArea did not receive the event for processing (and
3071            * could not update the focus cell).
3072            */
3073           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3074                                                               &cell_area,
3075                                                               &background_area,
3076                                                               event->x,
3077                                                               event->y);
3078
3079           if (focus_cell)
3080             gtk_tree_view_column_focus_cell (column, focus_cell);
3081
3082           if (event->state & GDK_CONTROL_MASK)
3083             {
3084               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3085               gtk_tree_view_real_toggle_cursor_row (tree_view);
3086             }
3087           else if (event->state & GDK_SHIFT_MASK)
3088             {
3089               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3090               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3091             }
3092           else
3093             {
3094               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
3095             }
3096
3097           tree_view->priv->ctrl_pressed = FALSE;
3098           tree_view->priv->shift_pressed = FALSE;
3099         }
3100
3101       /* the treeview may have been scrolled because of _set_cursor,
3102        * correct here
3103        */
3104
3105       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3106       dval = pre_val - aft_val;
3107
3108       cell_area.y += dval;
3109       background_area.y += dval;
3110
3111       /* Save press to possibly begin a drag
3112        */
3113       if (!column_handled_click &&
3114           !tree_view->priv->in_grab &&
3115           tree_view->priv->pressed_button < 0)
3116         {
3117           tree_view->priv->pressed_button = event->button;
3118           tree_view->priv->press_start_x = event->x;
3119           tree_view->priv->press_start_y = event->y;
3120
3121           if (tree_view->priv->rubber_banding_enable
3122               && !node_selected
3123               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3124             {
3125               tree_view->priv->press_start_y += tree_view->priv->dy;
3126               tree_view->priv->rubber_band_x = event->x;
3127               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3128               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3129
3130               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3131                 tree_view->priv->rubber_band_ctrl = TRUE;
3132               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
3133                 tree_view->priv->rubber_band_shift = TRUE;
3134             }
3135         }
3136
3137       /* Test if a double click happened on the same row. */
3138       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3139         {
3140           int double_click_time, double_click_distance;
3141
3142           g_object_get (gtk_settings_get_default (),
3143                         "gtk-double-click-time", &double_click_time,
3144                         "gtk-double-click-distance", &double_click_distance,
3145                         NULL);
3146
3147           /* Same conditions as _gdk_event_button_generate */
3148           if (tree_view->priv->last_button_x != -1 &&
3149               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3150               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3151               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3152             {
3153               /* We do no longer compare paths of this row and the
3154                * row clicked previously.  We use the double click
3155                * distance to decide whether this is a valid click,
3156                * allowing the mouse to slightly move over another row.
3157                */
3158               row_double_click = TRUE;
3159
3160               tree_view->priv->last_button_time = 0;
3161               tree_view->priv->last_button_x = -1;
3162               tree_view->priv->last_button_y = -1;
3163             }
3164           else
3165             {
3166               tree_view->priv->last_button_time = event->time;
3167               tree_view->priv->last_button_x = event->x;
3168               tree_view->priv->last_button_y = event->y;
3169             }
3170         }
3171
3172       if (row_double_click)
3173         {
3174           gtk_grab_remove (widget);
3175           gtk_tree_view_row_activated (tree_view, path, column);
3176
3177           if (tree_view->priv->pressed_button == event->button)
3178             tree_view->priv->pressed_button = -1;
3179         }
3180
3181       gtk_tree_path_free (path);
3182
3183       /* If we activated the row through a double click we don't want to grab
3184        * focus back, as moving focus to another widget is pretty common.
3185        */
3186       if (!row_double_click)
3187         grab_focus_and_unset_draw_keyfocus (tree_view);
3188
3189       return TRUE;
3190     }
3191
3192   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3193    */
3194   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3195     {
3196       column = list->data;
3197       if (event->window == _gtk_tree_view_column_get_window (column) &&
3198           gtk_tree_view_column_get_resizable (column) &&
3199           _gtk_tree_view_column_get_window (column))
3200         {
3201           GtkWidget *button;
3202           GtkAllocation button_allocation;
3203           gpointer drag_data;
3204
3205           if (event->type == GDK_2BUTTON_PRESS &&
3206               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3207             {
3208               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3209               _gtk_tree_view_column_autosize (tree_view, column);
3210               return TRUE;
3211             }
3212
3213           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3214                                _gtk_tree_view_column_get_window (column),
3215                                GDK_OWNERSHIP_NONE,
3216                                FALSE,
3217                                GDK_POINTER_MOTION_HINT_MASK
3218                                 | GDK_BUTTON1_MOTION_MASK
3219                                 | GDK_BUTTON_RELEASE_MASK,
3220                                NULL,
3221                                event->time) != GDK_GRAB_SUCCESS)
3222             return FALSE;
3223
3224           gtk_grab_add (widget);
3225           tree_view->priv->in_column_resize = TRUE;
3226
3227           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3228                                                    tree_view->priv->last_extra_space_per_column);
3229
3230           /* block attached dnd signal handler */
3231           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3232           if (drag_data)
3233             g_signal_handlers_block_matched (widget,
3234                                              G_SIGNAL_MATCH_DATA,
3235                                              0, 0, NULL, NULL,
3236                                              drag_data);
3237
3238           button = gtk_tree_view_column_get_button (column);
3239           gtk_widget_get_allocation (button, &button_allocation);
3240           tree_view->priv->drag_pos = i;
3241           tree_view->priv->x_drag = button_allocation.x + (rtl ? 0 : button_allocation.width);
3242
3243           if (!gtk_widget_has_focus (widget))
3244             gtk_widget_grab_focus (widget);
3245
3246           return TRUE;
3247         }
3248     }
3249   return FALSE;
3250 }
3251
3252 /* GtkWidget::button_release_event helper */
3253 static gboolean
3254 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3255                                           GdkEventButton *event)
3256 {
3257   GtkTreeView *tree_view;
3258   GtkWidget *button;
3259   GList *l;
3260   gboolean rtl;
3261   GdkDevice *device, *other;
3262
3263   tree_view = GTK_TREE_VIEW (widget);
3264
3265   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3266   device = gdk_event_get_device ((GdkEvent*)event);
3267   other = gdk_device_get_associated_device (device);
3268   gdk_device_ungrab (device, event->time);
3269   gdk_device_ungrab (other, event->time);
3270
3271   /* Move the button back */
3272   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3273   g_object_ref (button);
3274   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3275   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3276   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3277   g_object_unref (button);
3278   gtk_widget_queue_resize (widget);
3279   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3280     {
3281       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3283     }
3284   else
3285     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3286
3287   gtk_widget_grab_focus (button);
3288
3289   if (rtl)
3290     {
3291       if (tree_view->priv->cur_reorder &&
3292           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3293         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3294                                          tree_view->priv->cur_reorder->right_column);
3295     }
3296   else
3297     {
3298       if (tree_view->priv->cur_reorder &&
3299           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3300         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3301                                          tree_view->priv->cur_reorder->left_column);
3302     }
3303   tree_view->priv->drag_column = NULL;
3304   gdk_window_hide (tree_view->priv->drag_window);
3305
3306   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3307     g_slice_free (GtkTreeViewColumnReorder, l->data);
3308   g_list_free (tree_view->priv->column_drag_info);
3309   tree_view->priv->column_drag_info = NULL;
3310   tree_view->priv->cur_reorder = NULL;
3311
3312   if (tree_view->priv->drag_highlight_window)
3313     gdk_window_hide (tree_view->priv->drag_highlight_window);
3314
3315   /* Reset our flags */
3316   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3317   tree_view->priv->in_column_drag = FALSE;
3318
3319   return TRUE;
3320 }
3321
3322 /* GtkWidget::button_release_event helper */
3323 static gboolean
3324 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3325                                             GdkEventButton *event)
3326 {
3327   GtkTreeView *tree_view;
3328   gpointer drag_data;
3329
3330   tree_view = GTK_TREE_VIEW (widget);
3331
3332   tree_view->priv->drag_pos = -1;
3333
3334   /* unblock attached dnd signal handler */
3335   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3336   if (drag_data)
3337     g_signal_handlers_unblock_matched (widget,
3338                                        G_SIGNAL_MATCH_DATA,
3339                                        0, 0, NULL, NULL,
3340                                        drag_data);
3341
3342   tree_view->priv->in_column_resize = FALSE;
3343   gtk_grab_remove (widget);
3344   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3345   return TRUE;
3346 }
3347
3348 static gboolean
3349 gtk_tree_view_button_release (GtkWidget      *widget,
3350                               GdkEventButton *event)
3351 {
3352   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3353
3354   if (tree_view->priv->in_column_drag)
3355     return gtk_tree_view_button_release_drag_column (widget, event);
3356
3357   if (tree_view->priv->rubber_band_status)
3358     gtk_tree_view_stop_rubber_band (tree_view);
3359
3360   if (tree_view->priv->pressed_button == event->button)
3361     tree_view->priv->pressed_button = -1;
3362
3363   if (tree_view->priv->in_column_resize)
3364     return gtk_tree_view_button_release_column_resize (widget, event);
3365
3366   if (tree_view->priv->button_pressed_node == NULL)
3367     return FALSE;
3368
3369   if (event->button == 1)
3370     {
3371       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3372           tree_view->priv->arrow_prelit)
3373         {
3374           GtkTreePath *path = NULL;
3375
3376           path = _gtk_tree_view_find_path (tree_view,
3377                                            tree_view->priv->button_pressed_tree,
3378                                            tree_view->priv->button_pressed_node);
3379           /* Actually activate the node */
3380           if (tree_view->priv->button_pressed_node->children == NULL)
3381             gtk_tree_view_real_expand_row (tree_view, path,
3382                                            tree_view->priv->button_pressed_tree,
3383                                            tree_view->priv->button_pressed_node,
3384                                            FALSE, TRUE);
3385           else
3386             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3387                                              tree_view->priv->button_pressed_tree,
3388                                              tree_view->priv->button_pressed_node, TRUE);
3389           gtk_tree_path_free (path);
3390         }
3391
3392       gtk_grab_remove (widget);
3393       tree_view->priv->button_pressed_tree = NULL;
3394       tree_view->priv->button_pressed_node = NULL;
3395     }
3396
3397   return TRUE;
3398 }
3399
3400 static gboolean
3401 gtk_tree_view_grab_broken (GtkWidget          *widget,
3402                            GdkEventGrabBroken *event)
3403 {
3404   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3405
3406   if (tree_view->priv->in_column_drag)
3407     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3408
3409   if (tree_view->priv->in_column_resize)
3410     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3411
3412   return TRUE;
3413 }
3414
3415 #if 0
3416 static gboolean
3417 gtk_tree_view_configure (GtkWidget *widget,
3418                          GdkEventConfigure *event)
3419 {
3420   GtkTreeView *tree_view;
3421
3422   tree_view = GTK_TREE_VIEW (widget);
3423   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3424
3425   return FALSE;
3426 }
3427 #endif
3428
3429 /* GtkWidget::motion_event function set.
3430  */
3431
3432 static gboolean
3433 coords_are_over_arrow (GtkTreeView *tree_view,
3434                        GtkRBTree   *tree,
3435                        GtkRBNode   *node,
3436                        /* these are in bin window coords */
3437                        gint         x,
3438                        gint         y)
3439 {
3440   GdkRectangle arrow;
3441   gint x2;
3442
3443   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3444     return FALSE;
3445
3446   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3447     return FALSE;
3448
3449   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3450   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3451
3452   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3453
3454   arrow.width = x2 - arrow.x;
3455
3456   return (x >= arrow.x &&
3457           x < (arrow.x + arrow.width) &&
3458           y >= arrow.y &&
3459           y < (arrow.y + arrow.height));
3460 }
3461
3462 static gboolean
3463 auto_expand_timeout (gpointer data)
3464 {
3465   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3466   GtkTreePath *path;
3467
3468   if (tree_view->priv->prelight_node)
3469     {
3470       path = _gtk_tree_view_find_path (tree_view,
3471                                        tree_view->priv->prelight_tree,
3472                                        tree_view->priv->prelight_node);
3473
3474       if (tree_view->priv->prelight_node->children)
3475         gtk_tree_view_collapse_row (tree_view, path);
3476       else
3477         gtk_tree_view_expand_row (tree_view, path, FALSE);
3478
3479       gtk_tree_path_free (path);
3480     }
3481
3482   tree_view->priv->auto_expand_timeout = 0;
3483
3484   return FALSE;
3485 }
3486
3487 static void
3488 remove_auto_expand_timeout (GtkTreeView *tree_view)
3489 {
3490   if (tree_view->priv->auto_expand_timeout != 0)
3491     {
3492       g_source_remove (tree_view->priv->auto_expand_timeout);
3493       tree_view->priv->auto_expand_timeout = 0;
3494     }
3495 }
3496
3497 static void
3498 do_prelight (GtkTreeView *tree_view,
3499              GtkRBTree   *tree,
3500              GtkRBNode   *node,
3501              /* these are in bin_window coords */
3502              gint         x,
3503              gint         y)
3504 {
3505   if (tree_view->priv->prelight_tree == tree &&
3506       tree_view->priv->prelight_node == node)
3507     {
3508       /*  We are still on the same node,
3509           but we might need to take care of the arrow  */
3510
3511       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3512         {
3513           gboolean over_arrow;
3514
3515           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3516
3517           if (over_arrow != tree_view->priv->arrow_prelit)
3518             {
3519               if (over_arrow)
3520                 tree_view->priv->arrow_prelit = TRUE;
3521               else
3522                 tree_view->priv->arrow_prelit = FALSE;
3523
3524               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3525             }
3526         }
3527
3528       return;
3529     }
3530
3531   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3532     {
3533       /*  Unprelight the old node and arrow  */
3534
3535       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3536                              GTK_RBNODE_IS_PRELIT);
3537
3538       if (tree_view->priv->arrow_prelit
3539           && gtk_tree_view_draw_expanders (tree_view))
3540         {
3541           tree_view->priv->arrow_prelit = FALSE;
3542
3543           gtk_tree_view_queue_draw_arrow (tree_view,
3544                                           tree_view->priv->prelight_tree,
3545                                           tree_view->priv->prelight_node);
3546         }
3547
3548       _gtk_tree_view_queue_draw_node (tree_view,
3549                                       tree_view->priv->prelight_tree,
3550                                       tree_view->priv->prelight_node,
3551                                       NULL);
3552     }
3553
3554
3555   if (tree_view->priv->hover_expand)
3556     remove_auto_expand_timeout (tree_view);
3557
3558   /*  Set the new prelight values  */
3559   tree_view->priv->prelight_node = node;
3560   tree_view->priv->prelight_tree = tree;
3561
3562   if (!node || !tree)
3563     return;
3564
3565   /*  Prelight the new node and arrow  */
3566
3567   if (gtk_tree_view_draw_expanders (tree_view)
3568       && coords_are_over_arrow (tree_view, tree, node, x, y))
3569     {
3570       tree_view->priv->arrow_prelit = TRUE;
3571
3572       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3573     }
3574
3575   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3576
3577   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3578
3579   if (tree_view->priv->hover_expand)
3580     {
3581       tree_view->priv->auto_expand_timeout =
3582         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3583     }
3584 }
3585
3586 static void
3587 prelight_or_select (GtkTreeView *tree_view,
3588                     GtkRBTree   *tree,
3589                     GtkRBNode   *node,
3590                     /* these are in bin_window coords */
3591                     gint         x,
3592                     gint         y)
3593 {
3594   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3595
3596   if (tree_view->priv->hover_selection &&
3597       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3598       !(tree_view->priv->edited_column &&
3599         gtk_cell_area_get_edit_widget
3600         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3601     {
3602       if (node)
3603         {
3604           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3605             {
3606               GtkTreePath *path;
3607
3608               path = _gtk_tree_view_find_path (tree_view, tree, node);
3609               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3610               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3611                 {
3612                   tree_view->priv->draw_keyfocus = FALSE;
3613                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3614                 }
3615               gtk_tree_path_free (path);
3616             }
3617         }
3618
3619       else if (mode == GTK_SELECTION_SINGLE)
3620         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3621     }
3622
3623     do_prelight (tree_view, tree, node, x, y);
3624 }
3625
3626 static void
3627 ensure_unprelighted (GtkTreeView *tree_view)
3628 {
3629   do_prelight (tree_view,
3630                NULL, NULL,
3631                -1000, -1000); /* coords not possibly over an arrow */
3632
3633   g_assert (tree_view->priv->prelight_node == NULL);
3634 }
3635
3636 static void
3637 update_prelight (GtkTreeView *tree_view,
3638                  gint         x,
3639                  gint         y)
3640 {
3641   int new_y;
3642   GtkRBTree *tree;
3643   GtkRBNode *node;
3644
3645   if (tree_view->priv->tree == NULL)
3646     return;
3647
3648   if (x == -10000)
3649     {
3650       ensure_unprelighted (tree_view);
3651       return;
3652     }
3653
3654   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3655   if (new_y < 0)
3656     new_y = 0;
3657
3658   _gtk_rbtree_find_offset (tree_view->priv->tree,
3659                            new_y, &tree, &node);
3660
3661   if (node)
3662     prelight_or_select (tree_view, tree, node, x, y);
3663 }
3664
3665
3666
3667
3668 /* Our motion arrow is either a box (in the case of the original spot)
3669  * or an arrow.  It is expander_size wide.
3670  */
3671 /*
3672  * 11111111111111
3673  * 01111111111110
3674  * 00111111111100
3675  * 00011111111000
3676  * 00001111110000
3677  * 00000111100000
3678  * 00000111100000
3679  * 00000111100000
3680  * ~ ~ ~ ~ ~ ~ ~
3681  * 00000111100000
3682  * 00000111100000
3683  * 00000111100000
3684  * 00001111110000
3685  * 00011111111000
3686  * 00111111111100
3687  * 01111111111110
3688  * 11111111111111
3689  */
3690
3691 static void
3692 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3693 {
3694   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3695   GtkWidget *widget = GTK_WIDGET (tree_view);
3696   cairo_surface_t *mask_image;
3697   cairo_region_t *mask_region;
3698   gint x;
3699   gint y;
3700   gint width;
3701   gint height;
3702   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3703   GdkWindowAttr attributes;
3704   guint attributes_mask;
3705   cairo_t *cr;
3706
3707   if (!reorder ||
3708       reorder->left_column == tree_view->priv->drag_column ||
3709       reorder->right_column == tree_view->priv->drag_column)
3710     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3711   else if (reorder->left_column || reorder->right_column)
3712     {
3713       GtkAllocation left_allocation, right_allocation;
3714       GdkRectangle visible_rect;
3715       GtkWidget *button;
3716
3717       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3718       if (reorder->left_column)
3719         {
3720           button = gtk_tree_view_column_get_button (reorder->left_column);
3721           gtk_widget_get_allocation (button, &left_allocation);
3722           x = left_allocation.x + left_allocation.width;
3723         }
3724       else
3725         {
3726           button = gtk_tree_view_column_get_button (reorder->right_column);
3727           gtk_widget_get_allocation (button, &right_allocation);
3728           x = right_allocation.x;
3729         }
3730
3731       if (x < visible_rect.x)
3732         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3733       else if (x > visible_rect.x + visible_rect.width)
3734         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3735       else
3736         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3737     }
3738
3739   /* We want to draw the rectangle over the initial location. */
3740   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3741     {
3742       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3743         {
3744           GtkAllocation drag_allocation;
3745           GtkWidget    *button;
3746
3747           if (tree_view->priv->drag_highlight_window)
3748             {
3749               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3750                                         NULL);
3751               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3752             }
3753
3754           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3755           attributes.window_type = GDK_WINDOW_CHILD;
3756           attributes.wclass = GDK_INPUT_OUTPUT;
3757           attributes.x = tree_view->priv->drag_column_x;
3758           attributes.y = 0;
3759           gtk_widget_get_allocation (button, &drag_allocation);
3760           width = attributes.width = drag_allocation.width;
3761           height = attributes.height = drag_allocation.height;
3762           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3763           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3764           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3765           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3766           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3767
3768           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3769           cr = cairo_create (mask_image);
3770
3771           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3772           cairo_stroke (cr);
3773           cairo_destroy (cr);
3774
3775           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3776           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3777                                            mask_region, 0, 0);
3778
3779           cairo_region_destroy (mask_region);
3780           cairo_surface_destroy (mask_image);
3781
3782           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3783         }
3784     }
3785   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3786     {
3787       GtkAllocation button_allocation;
3788       GtkWidget    *button;
3789
3790       width = tree_view->priv->expander_size;
3791
3792       /* Get x, y, width, height of arrow */
3793       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3794       if (reorder->left_column)
3795         {
3796           button = gtk_tree_view_column_get_button (reorder->left_column);
3797           gtk_widget_get_allocation (button, &button_allocation);
3798           x += button_allocation.x + button_allocation.width - width/2;
3799           height = button_allocation.height;
3800         }
3801       else
3802         {
3803           button = gtk_tree_view_column_get_button (reorder->right_column);
3804           gtk_widget_get_allocation (button, &button_allocation);
3805           x += button_allocation.x - width/2;
3806           height = button_allocation.height;
3807         }
3808       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3809       height += tree_view->priv->expander_size;
3810
3811       /* Create the new window */
3812       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3813         {
3814           if (tree_view->priv->drag_highlight_window)
3815             {
3816               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3817                                         NULL);
3818               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3819             }
3820
3821           attributes.window_type = GDK_WINDOW_TEMP;
3822           attributes.wclass = GDK_INPUT_OUTPUT;
3823           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3824           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3825           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3826           attributes.x = x;
3827           attributes.y = y;
3828           attributes.width = width;
3829           attributes.height = height;
3830           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3831                                                                    &attributes, attributes_mask);
3832           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3833
3834           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3835
3836           cr = cairo_create (mask_image);
3837           cairo_move_to (cr, 0, 0);
3838           cairo_line_to (cr, width, 0);
3839           cairo_line_to (cr, width / 2., width / 2);
3840           cairo_move_to (cr, 0, height);
3841           cairo_line_to (cr, width, height);
3842           cairo_line_to (cr, width / 2., height - width / 2.);
3843           cairo_fill (cr);
3844           cairo_destroy (cr);
3845
3846           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3847           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3848                                            mask_region, 0, 0);
3849
3850           cairo_region_destroy (mask_region);
3851           cairo_surface_destroy (mask_image);
3852         }
3853
3854       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3855       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3856     }
3857   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3858            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3859     {
3860       GtkAllocation allocation;
3861       GtkWidget    *button;
3862
3863       width = tree_view->priv->expander_size;
3864
3865       /* Get x, y, width, height of arrow */
3866       width = width/2; /* remember, the arrow only takes half the available width */
3867       gdk_window_get_origin (gtk_widget_get_window (widget),
3868                              &x, &y);
3869       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3870         {
3871           gtk_widget_get_allocation (widget, &allocation);
3872           x += allocation.width - width;
3873         }
3874
3875       if (reorder->left_column)
3876         {
3877           button = gtk_tree_view_column_get_button (reorder->left_column);
3878           gtk_widget_get_allocation (button, &allocation);
3879           height = allocation.height;
3880         }
3881       else
3882         {
3883           button = gtk_tree_view_column_get_button (reorder->right_column);
3884           gtk_widget_get_allocation (button, &allocation);
3885           height = allocation.height;
3886         }
3887
3888       y -= tree_view->priv->expander_size;
3889       height += 2*tree_view->priv->expander_size;
3890
3891       /* Create the new window */
3892       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3893           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3894         {
3895           if (tree_view->priv->drag_highlight_window)
3896             {
3897               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3898                                         NULL);
3899               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3900             }
3901
3902           attributes.window_type = GDK_WINDOW_TEMP;
3903           attributes.wclass = GDK_INPUT_OUTPUT;
3904           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3905           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3906           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3907           attributes.x = x;
3908           attributes.y = y;
3909           attributes.width = width;
3910           attributes.height = height;
3911           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3912           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3913
3914           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3915
3916           cr = cairo_create (mask_image);
3917           /* mirror if we're on the left */
3918           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3919             {
3920               cairo_translate (cr, width, 0);
3921               cairo_scale (cr, -1, 1);
3922             }
3923           cairo_move_to (cr, 0, 0);
3924           cairo_line_to (cr, width, width);
3925           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3926           cairo_move_to (cr, 0, height);
3927           cairo_line_to (cr, width, height - width);
3928           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3929           cairo_fill (cr);
3930           cairo_destroy (cr);
3931
3932           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3933           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3934                                            mask_region, 0, 0);
3935
3936           cairo_region_destroy (mask_region);
3937           cairo_surface_destroy (mask_image);
3938         }
3939
3940       tree_view->priv->drag_column_window_state = arrow_type;
3941       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3942    }
3943   else
3944     {
3945       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3946       gdk_window_hide (tree_view->priv->drag_highlight_window);
3947       return;
3948     }
3949
3950   gdk_window_show (tree_view->priv->drag_highlight_window);
3951   gdk_window_raise (tree_view->priv->drag_highlight_window);
3952 }
3953
3954 static gboolean
3955 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3956                                     GdkEventMotion *event)
3957 {
3958   gint x;
3959   gint new_width;
3960   GtkTreeViewColumn *column;
3961   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3962
3963   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3964
3965   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3966     gtk_widget_get_pointer (widget, &x, NULL);
3967   else
3968     x = event->x;
3969
3970   if (tree_view->priv->hadjustment)
3971     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3972
3973   new_width = gtk_tree_view_new_column_width (tree_view,
3974                                               tree_view->priv->drag_pos, &x);
3975   if (x != tree_view->priv->x_drag &&
3976       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3977     {
3978       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3979
3980       if (gtk_tree_view_column_get_expand (column))
3981         new_width -= tree_view->priv->last_extra_space_per_column;
3982
3983       _gtk_tree_view_column_set_resized_width (column, new_width);
3984
3985
3986       gtk_widget_queue_resize (widget);
3987     }
3988
3989   return FALSE;
3990 }
3991
3992
3993 static void
3994 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3995 {
3996   GtkTreeViewColumnReorder *reorder = NULL;
3997   GList *list;
3998   gint mouse_x;
3999
4000   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
4001   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4002     {
4003       reorder = (GtkTreeViewColumnReorder *) list->data;
4004       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4005         break;
4006       reorder = NULL;
4007     }
4008
4009   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4010       return;*/
4011
4012   tree_view->priv->cur_reorder = reorder;
4013   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4014 }
4015
4016 static void
4017 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4018 {
4019   GdkRectangle visible_rect;
4020   gint y;
4021   gint offset;
4022
4023   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
4024   y += tree_view->priv->dy;
4025
4026   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4027
4028   /* see if we are near the edge. */
4029   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4030   if (offset > 0)
4031     {
4032       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4033       if (offset < 0)
4034         return;
4035     }
4036
4037   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4038                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4039 }
4040
4041 static gboolean
4042 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
4043 {
4044   GdkRectangle visible_rect;
4045   gint x;
4046   gint offset;
4047
4048   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
4049
4050   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4051
4052   /* See if we are near the edge. */
4053   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4054   if (offset > 0)
4055     {
4056       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4057       if (offset < 0)
4058         return TRUE;
4059     }
4060   offset = offset/3;
4061
4062   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4063                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4064
4065   return TRUE;
4066
4067 }
4068
4069 static gboolean
4070 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4071                                   GdkEventMotion *event)
4072 {
4073   GtkAllocation allocation, button_allocation;
4074   GtkTreeView *tree_view = (GtkTreeView *) widget;
4075   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4076   GtkWidget *button;
4077   gint x, y;
4078
4079   /* Sanity Check */
4080   if ((column == NULL) ||
4081       (event->window != tree_view->priv->drag_window))
4082     return FALSE;
4083
4084   button = gtk_tree_view_column_get_button (column);
4085
4086   /* Handle moving the header */
4087   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4088   gtk_widget_get_allocation (widget, &allocation);
4089   gtk_widget_get_allocation (button, &button_allocation);
4090   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4091              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4092   gdk_window_move (tree_view->priv->drag_window, x, y);
4093
4094   /* autoscroll, if needed */
4095   gtk_tree_view_horizontal_autoscroll (tree_view);
4096   /* Update the current reorder position and arrow; */
4097   gtk_tree_view_update_current_reorder (tree_view);
4098
4099   return TRUE;
4100 }
4101
4102 static void
4103 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4104 {
4105   remove_scroll_timeout (tree_view);
4106   gtk_grab_remove (GTK_WIDGET (tree_view));
4107
4108   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4109     {
4110       GtkTreePath *tmp_path;
4111
4112       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4113
4114       /* The anchor path should be set to the start path */
4115       tmp_path = _gtk_tree_view_find_path (tree_view,
4116                                            tree_view->priv->rubber_band_start_tree,
4117                                            tree_view->priv->rubber_band_start_node);
4118
4119       if (tree_view->priv->anchor)
4120         gtk_tree_row_reference_free (tree_view->priv->anchor);
4121
4122       tree_view->priv->anchor =
4123         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4124                                           tree_view->priv->model,
4125                                           tmp_path);
4126
4127       gtk_tree_path_free (tmp_path);
4128
4129       /* ... and the cursor to the end path */
4130       tmp_path = _gtk_tree_view_find_path (tree_view,
4131                                            tree_view->priv->rubber_band_end_tree,
4132                                            tree_view->priv->rubber_band_end_node);
4133       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
4134       gtk_tree_path_free (tmp_path);
4135
4136       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4137     }
4138
4139   /* Clear status variables */
4140   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4141   tree_view->priv->rubber_band_shift = 0;
4142   tree_view->priv->rubber_band_ctrl = 0;
4143
4144   tree_view->priv->rubber_band_start_node = NULL;
4145   tree_view->priv->rubber_band_start_tree = NULL;
4146   tree_view->priv->rubber_band_end_node = NULL;
4147   tree_view->priv->rubber_band_end_tree = NULL;
4148 }
4149
4150 static void
4151 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4152                                                  GtkRBTree   *start_tree,
4153                                                  GtkRBNode   *start_node,
4154                                                  GtkRBTree   *end_tree,
4155                                                  GtkRBNode   *end_node,
4156                                                  gboolean     select,
4157                                                  gboolean     skip_start,
4158                                                  gboolean     skip_end)
4159 {
4160   if (start_node == end_node)
4161     return;
4162
4163   /* We skip the first node and jump inside the loop */
4164   if (skip_start)
4165     goto skip_first;
4166
4167   do
4168     {
4169       /* Small optimization by assuming insensitive nodes are never
4170        * selected.
4171        */
4172       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4173         {
4174           GtkTreePath *path;
4175           gboolean selectable;
4176
4177           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
4178           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4179           gtk_tree_path_free (path);
4180
4181           if (!selectable)
4182             goto node_not_selectable;
4183         }
4184
4185       if (select)
4186         {
4187           if (tree_view->priv->rubber_band_shift)
4188             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4189           else if (tree_view->priv->rubber_band_ctrl)
4190             {
4191               /* Toggle the selection state */
4192               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4193                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4194               else
4195                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4196             }
4197           else
4198             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4199         }
4200       else
4201         {
4202           /* Mirror the above */
4203           if (tree_view->priv->rubber_band_shift)
4204             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4205           else if (tree_view->priv->rubber_band_ctrl)
4206             {
4207               /* Toggle the selection state */
4208               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4209                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4210               else
4211                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4212             }
4213           else
4214             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4215         }
4216
4217       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4218
4219 node_not_selectable:
4220       if (start_node == end_node)
4221         break;
4222
4223 skip_first:
4224
4225       if (start_node->children)
4226         {
4227           start_tree = start_node->children;
4228           start_node = start_tree->root;
4229           while (start_node->left != start_tree->nil)
4230             start_node = start_node->left;
4231         }
4232       else
4233         {
4234           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4235
4236           if (!start_tree)
4237             /* Ran out of tree */
4238             break;
4239         }
4240
4241       if (skip_end && start_node == end_node)
4242         break;
4243     }
4244   while (TRUE);
4245 }
4246
4247 static void
4248 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4249 {
4250   GtkRBTree *start_tree, *end_tree;
4251   GtkRBNode *start_node, *end_node;
4252
4253   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
4254   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
4255
4256   /* Handle the start area first */
4257   if (!tree_view->priv->rubber_band_start_node)
4258     {
4259       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4260                                                        start_tree,
4261                                                        start_node,
4262                                                        end_tree,
4263                                                        end_node,
4264                                                        TRUE,
4265                                                        FALSE,
4266                                                        FALSE);
4267     }
4268   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4269            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4270     {
4271       /* New node is above the old one; selection became bigger */
4272       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4273                                                        start_tree,
4274                                                        start_node,
4275                                                        tree_view->priv->rubber_band_start_tree,
4276                                                        tree_view->priv->rubber_band_start_node,
4277                                                        TRUE,
4278                                                        FALSE,
4279                                                        TRUE);
4280     }
4281   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4282            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4283     {
4284       /* New node is below the old one; selection became smaller */
4285       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4286                                                        tree_view->priv->rubber_band_start_tree,
4287                                                        tree_view->priv->rubber_band_start_node,
4288                                                        start_tree,
4289                                                        start_node,
4290                                                        FALSE,
4291                                                        FALSE,
4292                                                        TRUE);
4293     }
4294
4295   tree_view->priv->rubber_band_start_tree = start_tree;
4296   tree_view->priv->rubber_band_start_node = start_node;
4297
4298   /* Next, handle the end area */
4299   if (!tree_view->priv->rubber_band_end_node)
4300     {
4301       /* In the event this happens, start_node was also NULL; this case is
4302        * handled above.
4303        */
4304     }
4305   else if (!end_node)
4306     {
4307       /* Find the last node in the tree */
4308       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4309                                &end_tree, &end_node);
4310
4311       /* Selection reached end of the tree */
4312       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4313                                                        tree_view->priv->rubber_band_end_tree,
4314                                                        tree_view->priv->rubber_band_end_node,
4315                                                        end_tree,
4316                                                        end_node,
4317                                                        TRUE,
4318                                                        TRUE,
4319                                                        FALSE);
4320     }
4321   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4322            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4323     {
4324       /* New node is below the old one; selection became bigger */
4325       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4326                                                        tree_view->priv->rubber_band_end_tree,
4327                                                        tree_view->priv->rubber_band_end_node,
4328                                                        end_tree,
4329                                                        end_node,
4330                                                        TRUE,
4331                                                        TRUE,
4332                                                        FALSE);
4333     }
4334   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4335            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4336     {
4337       /* New node is above the old one; selection became smaller */
4338       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4339                                                        end_tree,
4340                                                        end_node,
4341                                                        tree_view->priv->rubber_band_end_tree,
4342                                                        tree_view->priv->rubber_band_end_node,
4343                                                        FALSE,
4344                                                        TRUE,
4345                                                        FALSE);
4346     }
4347
4348   tree_view->priv->rubber_band_end_tree = end_tree;
4349   tree_view->priv->rubber_band_end_node = end_node;
4350 }
4351
4352 static void
4353 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4354 {
4355   gint x, y;
4356   GdkRectangle old_area;
4357   GdkRectangle new_area;
4358   GdkRectangle common;
4359   cairo_region_t *invalid_region;
4360
4361   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4362   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4363   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4364   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4365
4366   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4367
4368   x = MAX (x, 0);
4369   y = MAX (y, 0) + tree_view->priv->dy;
4370
4371   new_area.x = MIN (tree_view->priv->press_start_x, x);
4372   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4373   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4374   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4375
4376   invalid_region = cairo_region_create_rectangle (&old_area);
4377   cairo_region_union_rectangle (invalid_region, &new_area);
4378
4379   gdk_rectangle_intersect (&old_area, &new_area, &common);
4380   if (common.width > 2 && common.height > 2)
4381     {
4382       cairo_region_t *common_region;
4383
4384       /* make sure the border is invalidated */
4385       common.x += 1;
4386       common.y += 1;
4387       common.width -= 2;
4388       common.height -= 2;
4389
4390       common_region = cairo_region_create_rectangle (&common);
4391
4392       cairo_region_subtract (invalid_region, common_region);
4393       cairo_region_destroy (common_region);
4394     }
4395
4396   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4397
4398   cairo_region_destroy (invalid_region);
4399
4400   tree_view->priv->rubber_band_x = x;
4401   tree_view->priv->rubber_band_y = y;
4402
4403   gtk_tree_view_update_rubber_band_selection (tree_view);
4404 }
4405
4406 static void
4407 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4408                                  cairo_t      *cr)
4409 {
4410   GdkRectangle rect;
4411   GtkStyleContext *context;
4412
4413   cairo_save (cr);
4414
4415   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4416
4417   gtk_style_context_save (context);
4418   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4419
4420   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4421   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4422   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4423   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4424
4425   gdk_cairo_rectangle (cr, &rect);
4426   cairo_clip (cr);
4427
4428   gtk_render_background (context, cr,
4429                          rect.x, rect.y,
4430                          rect.width, rect.height);
4431   gtk_render_frame (context, cr,
4432                     rect.x, rect.y,
4433                     rect.width, rect.height);
4434
4435   gtk_style_context_restore (context);
4436   cairo_restore (cr);
4437 }
4438
4439 static gboolean
4440 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4441                                  GdkEventMotion *event)
4442 {
4443   GtkTreeView *tree_view;
4444   GtkRBTree *tree;
4445   GtkRBNode *node;
4446   gint new_y;
4447
4448   tree_view = (GtkTreeView *) widget;
4449
4450   if (tree_view->priv->tree == NULL)
4451     return FALSE;
4452
4453   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4454     {
4455       gtk_grab_add (GTK_WIDGET (tree_view));
4456       gtk_tree_view_update_rubber_band (tree_view);
4457
4458       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4459     }
4460   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4461     {
4462       gtk_tree_view_update_rubber_band (tree_view);
4463
4464       add_scroll_timeout (tree_view);
4465     }
4466
4467   /* only check for an initiated drag when a button is pressed */
4468   if (tree_view->priv->pressed_button >= 0
4469       && !tree_view->priv->rubber_band_status)
4470     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4471
4472   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4473   if (new_y < 0)
4474     new_y = 0;
4475
4476   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4477
4478   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4479   if ((tree_view->priv->button_pressed_node != NULL) &&
4480       (tree_view->priv->button_pressed_node != node))
4481     node = NULL;
4482
4483   tree_view->priv->event_last_x = event->x;
4484   tree_view->priv->event_last_y = event->y;
4485
4486   prelight_or_select (tree_view, tree, node, event->x, event->y);
4487
4488   return TRUE;
4489 }
4490
4491 static gboolean
4492 gtk_tree_view_motion (GtkWidget      *widget,
4493                       GdkEventMotion *event)
4494 {
4495   GtkTreeView *tree_view;
4496
4497   tree_view = (GtkTreeView *) widget;
4498
4499   /* Resizing a column */
4500   if (tree_view->priv->in_column_resize)
4501     return gtk_tree_view_motion_resize_column (widget, event);
4502
4503   /* Drag column */
4504   if (tree_view->priv->in_column_drag)
4505     return gtk_tree_view_motion_drag_column (widget, event);
4506
4507   /* Sanity check it */
4508   if (event->window == tree_view->priv->bin_window)
4509     return gtk_tree_view_motion_bin_window (widget, event);
4510
4511   return FALSE;
4512 }
4513
4514 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4515  * the tree is empty.
4516  */
4517 static void
4518 invalidate_empty_focus (GtkTreeView *tree_view)
4519 {
4520   GdkRectangle area;
4521
4522   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4523     return;
4524
4525   area.x = 0;
4526   area.y = 0;
4527   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4528   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4529   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4530 }
4531
4532 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4533  * is empty.
4534  */
4535 static void
4536 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4537 {
4538   GtkWidget *widget = GTK_WIDGET (tree_view);
4539   gint w, h;
4540
4541   if (!gtk_widget_has_focus (widget))
4542     return;
4543
4544   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4545   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4546
4547   if (w > 0 && h > 0)
4548     {
4549       GtkStyleContext *context;
4550       GtkStateFlags state;
4551
4552       context = gtk_widget_get_style_context (widget);
4553       state = gtk_widget_get_state_flags (widget);
4554
4555       gtk_style_context_save (context);
4556       gtk_style_context_set_state (context, state);
4557
4558       gtk_render_focus (context, cr, 1, 1, w, h);
4559
4560       gtk_style_context_restore (context);
4561     }
4562 }
4563
4564 typedef enum {
4565   GTK_TREE_VIEW_GRID_LINE,
4566   GTK_TREE_VIEW_TREE_LINE,
4567   GTK_TREE_VIEW_FOREGROUND_LINE
4568 } GtkTreeViewLineType;
4569
4570 static void
4571 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4572                          cairo_t             *cr,
4573                          GtkTreeViewLineType  type,
4574                          int                  x1,
4575                          int                  y1,
4576                          int                  x2,
4577                          int                  y2)
4578 {
4579   cairo_save (cr);
4580
4581   switch (type)
4582     {
4583     case GTK_TREE_VIEW_TREE_LINE:
4584       cairo_set_source_rgb (cr, 0, 0, 0);
4585       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4586       if (tree_view->priv->tree_line_dashes[0])
4587         cairo_set_dash (cr,
4588                         tree_view->priv->tree_line_dashes,
4589                         2, 0.5);
4590       break;
4591     case GTK_TREE_VIEW_GRID_LINE:
4592       cairo_set_source_rgb (cr, 0, 0, 0);
4593       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4594       if (tree_view->priv->grid_line_dashes[0])
4595         cairo_set_dash (cr,
4596                         tree_view->priv->grid_line_dashes,
4597                         2, 0.5);
4598       break;
4599     default:
4600       g_assert_not_reached ();
4601       /* fall through */
4602     case GTK_TREE_VIEW_FOREGROUND_LINE:
4603       {
4604         GtkStyleContext *context;
4605         GtkStateFlags state;
4606         GdkRGBA color;
4607
4608         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4609         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4610
4611         cairo_set_line_width (cr, 1.0);
4612         gtk_style_context_get_color (context, state, &color);
4613         gdk_cairo_set_source_rgba (cr, &color);
4614       }
4615
4616       break;
4617     }
4618
4619   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4620   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4621   cairo_stroke (cr);
4622
4623   cairo_restore (cr);
4624 }
4625
4626 static void
4627 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4628                                cairo_t        *cr,
4629                                gint            n_visible_columns)
4630 {
4631   GList *list = tree_view->priv->columns;
4632   gint i = 0;
4633   gint current_x = 0;
4634
4635   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4636       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4637     return;
4638
4639   /* Only draw the lines for visible rows and columns */
4640   for (list = tree_view->priv->columns; list; list = list->next, i++)
4641     {
4642       GtkTreeViewColumn *column = list->data;
4643
4644       /* We don't want a line for the last column */
4645       if (i == n_visible_columns - 1)
4646         break;
4647
4648       if (!gtk_tree_view_column_get_visible (column))
4649         continue;
4650
4651       current_x += gtk_tree_view_column_get_width (column);
4652
4653       gtk_tree_view_draw_line (tree_view, cr,
4654                                GTK_TREE_VIEW_GRID_LINE,
4655                                current_x - 1, 0,
4656                                current_x - 1, tree_view->priv->height);
4657     }
4658 }
4659
4660 /* Warning: Very scary function.
4661  * Modify at your own risk
4662  *
4663  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4664  * FIXME: It's not...
4665  */
4666 static gboolean
4667 gtk_tree_view_bin_draw (GtkWidget      *widget,
4668                         cairo_t        *cr)
4669 {
4670   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4671   GtkTreePath *path;
4672   GtkRBTree *tree;
4673   GList *list;
4674   GtkRBNode *node;
4675   GtkRBNode *cursor = NULL;
4676   GtkRBTree *cursor_tree = NULL;
4677   GtkRBNode *drag_highlight = NULL;
4678   GtkRBTree *drag_highlight_tree = NULL;
4679   GtkTreeIter iter;
4680   gint new_y;
4681   gint y_offset, cell_offset;
4682   gint max_height;
4683   gint depth;
4684   GdkRectangle background_area;
4685   GdkRectangle cell_area;
4686   GdkRectangle clip;
4687   guint flags;
4688   gint highlight_x;
4689   gint expander_cell_width;
4690   gint bin_window_width;
4691   gint bin_window_height;
4692   GtkTreePath *cursor_path;
4693   GtkTreePath *drag_dest_path;
4694   GList *first_column, *last_column;
4695   gint vertical_separator;
4696   gint horizontal_separator;
4697   gint focus_line_width;
4698   gboolean allow_rules;
4699   gboolean has_can_focus_cell;
4700   gboolean rtl;
4701   gint n_visible_columns;
4702   gint pointer_x, pointer_y;
4703   gint grid_line_width;
4704   gboolean got_pointer = FALSE;
4705   gboolean draw_vgrid_lines, draw_hgrid_lines;
4706   GtkStyleContext *context;
4707   GtkStateFlags state;
4708
4709   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4710   context = gtk_widget_get_style_context (widget);
4711   state = gtk_widget_get_state_flags (widget);
4712
4713   gtk_widget_style_get (widget,
4714                         "horizontal-separator", &horizontal_separator,
4715                         "vertical-separator", &vertical_separator,
4716                         "allow-rules", &allow_rules,
4717                         "focus-line-width", &focus_line_width,
4718                         NULL);
4719
4720   if (tree_view->priv->tree == NULL)
4721     {
4722       draw_empty_focus (tree_view, cr);
4723       return TRUE;
4724     }
4725
4726   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4727   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4728   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4729   cairo_clip (cr);
4730   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4731     return TRUE;
4732
4733   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4734
4735   if (new_y < 0)
4736     new_y = 0;
4737   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4738
4739   if (tree_view->priv->height < bin_window_height)
4740     {
4741       gtk_style_context_save (context);
4742       gtk_style_context_set_state (context, state);
4743       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4744
4745       gtk_render_background (context, cr,
4746                              0, tree_view->priv->height,
4747                              bin_window_width,
4748                              bin_window_height - tree_view->priv->height);
4749
4750       gtk_style_context_restore (context);
4751     }
4752
4753   if (node == NULL)
4754     return TRUE;
4755
4756   /* find the path for the node */
4757   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4758                                    tree,
4759                                    node);
4760   gtk_tree_model_get_iter (tree_view->priv->model,
4761                            &iter,
4762                            path);
4763   depth = gtk_tree_path_get_depth (path);
4764   gtk_tree_path_free (path);
4765
4766   cursor_path = NULL;
4767   drag_dest_path = NULL;
4768
4769   if (tree_view->priv->cursor)
4770     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4771
4772   if (cursor_path)
4773     _gtk_tree_view_find_node (tree_view, cursor_path,
4774                               &cursor_tree, &cursor);
4775
4776   if (tree_view->priv->drag_dest_row)
4777     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4778
4779   if (drag_dest_path)
4780     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4781                               &drag_highlight_tree, &drag_highlight);
4782
4783   draw_vgrid_lines =
4784     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4785     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4786   draw_hgrid_lines =
4787     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4788     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4789
4790   if (draw_vgrid_lines || draw_hgrid_lines)
4791     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4792
4793   n_visible_columns = 0;
4794   for (list = tree_view->priv->columns; list; list = list->next)
4795     {
4796       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4797         continue;
4798       n_visible_columns ++;
4799     }
4800
4801   /* Find the last column */
4802   for (last_column = g_list_last (tree_view->priv->columns);
4803        last_column &&
4804        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4805        last_column = last_column->prev)
4806     ;
4807
4808   /* and the first */
4809   for (first_column = g_list_first (tree_view->priv->columns);
4810        first_column &&
4811        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4812        first_column = first_column->next)
4813     ;
4814
4815   /* Actually process the expose event.  To do this, we want to
4816    * start at the first node of the event, and walk the tree in
4817    * order, drawing each successive node.
4818    */
4819
4820   do
4821     {
4822       gboolean parity;
4823       gboolean is_separator = FALSE;
4824       gboolean is_first = FALSE;
4825       gboolean is_last = FALSE;
4826       gint n_col = 0;
4827
4828       is_separator = row_is_separator (tree_view, &iter, NULL);
4829
4830       max_height = gtk_tree_view_get_row_height (tree_view, node);
4831
4832       cell_offset = 0;
4833       highlight_x = 0; /* should match x coord of first cell */
4834       expander_cell_width = 0;
4835
4836       background_area.y = y_offset + clip.y;
4837       background_area.height = max_height;
4838
4839       flags = 0;
4840
4841       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4842         flags |= GTK_CELL_RENDERER_PRELIT;
4843
4844       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4845         flags |= GTK_CELL_RENDERER_SELECTED;
4846
4847       parity = _gtk_rbtree_node_find_parity (tree, node);
4848
4849       /* we *need* to set cell data on all cells before the call
4850        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4851        * return a correct value.
4852        */
4853       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4854            list;
4855            list = (rtl ? list->prev : list->next))
4856         {
4857           GtkTreeViewColumn *column = list->data;
4858           gtk_tree_view_column_cell_set_cell_data (column,
4859                                                    tree_view->priv->model,
4860                                                    &iter,
4861                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4862                                                    node->children?TRUE:FALSE);
4863         }
4864
4865       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4866
4867       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4868            list;
4869            list = (rtl ? list->prev : list->next))
4870         {
4871           GtkTreeViewColumn *column = list->data;
4872           GtkRegionFlags row_flags = 0, column_flags = 0;
4873           GtkStateFlags state = 0;
4874           gint width;
4875           gboolean draw_focus;
4876
4877           if (!gtk_tree_view_column_get_visible (column))
4878             continue;
4879
4880           n_col++;
4881           width = gtk_tree_view_column_get_width (column);
4882
4883           if (cell_offset > clip.x + clip.width ||
4884               cell_offset + width < clip.x)
4885             {
4886               cell_offset += width;
4887               continue;
4888             }
4889
4890           if (gtk_tree_view_column_get_sort_indicator (column))
4891             flags |= GTK_CELL_RENDERER_SORTED;
4892           else
4893             flags &= ~GTK_CELL_RENDERER_SORTED;
4894
4895           if (cursor == node)
4896             flags |= GTK_CELL_RENDERER_FOCUSED;
4897           else
4898             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4899
4900           background_area.x = cell_offset;
4901           background_area.width = width;
4902
4903           cell_area = background_area;
4904           cell_area.y += vertical_separator / 2;
4905           cell_area.x += horizontal_separator / 2;
4906           cell_area.height -= vertical_separator;
4907           cell_area.width -= horizontal_separator;
4908
4909           if (draw_vgrid_lines)
4910             {
4911               if (list == first_column)
4912                 {
4913                   cell_area.width -= grid_line_width / 2;
4914                 }
4915               else if (list == last_column)
4916                 {
4917                   cell_area.x += grid_line_width / 2;
4918                   cell_area.width -= grid_line_width / 2;
4919                 }
4920               else
4921                 {
4922                   cell_area.x += grid_line_width / 2;
4923                   cell_area.width -= grid_line_width;
4924                 }
4925             }
4926
4927           if (draw_hgrid_lines)
4928             {
4929               cell_area.y += grid_line_width / 2;
4930               cell_area.height -= grid_line_width;
4931             }
4932
4933           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4934             {
4935               cell_offset += gtk_tree_view_column_get_width (column);
4936               continue;
4937             }
4938
4939           gtk_tree_view_column_cell_set_cell_data (column,
4940                                                    tree_view->priv->model,
4941                                                    &iter,
4942                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4943                                                    node->children?TRUE:FALSE);
4944
4945           /* Select the detail for drawing the cell.  relevant
4946            * factors are parity, sortedness, and whether to
4947            * display rules.
4948            */
4949           if (allow_rules && tree_view->priv->has_rules)
4950             {
4951               if (parity)
4952                 row_flags |= GTK_REGION_ODD;
4953               else
4954                 row_flags |= GTK_REGION_EVEN;
4955             }
4956
4957           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4958               n_visible_columns >= 3)
4959             column_flags |= GTK_REGION_SORTED;
4960
4961           is_first = (rtl ? !list->next : !list->prev);
4962           is_last = (rtl ? !list->prev : !list->next);
4963
4964           if (is_first)
4965             column_flags |= GTK_REGION_FIRST;
4966
4967           if (is_last)
4968             column_flags |= GTK_REGION_LAST;
4969
4970           if ((n_col % 2) == 0)
4971             column_flags |= GTK_REGION_EVEN;
4972           else
4973             column_flags |= GTK_REGION_ODD;
4974
4975           gtk_style_context_save (context);
4976
4977           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4978           gtk_style_context_set_state (context, state);
4979
4980           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4981           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4982           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4983
4984           if (node == cursor && has_can_focus_cell
4985               && ((column == tree_view->priv->focus_column
4986                    && tree_view->priv->draw_keyfocus &&
4987                    gtk_widget_has_focus (widget))
4988                   || (column == tree_view->priv->edited_column)))
4989             draw_focus = TRUE;
4990           else
4991             draw_focus = FALSE;
4992
4993           /* Draw background */
4994           gtk_render_background (context, cr,
4995                                  background_area.x,
4996                                  background_area.y,
4997                                  background_area.width,
4998                                  background_area.height);
4999
5000           if (gtk_tree_view_is_expander_column (tree_view, column))
5001             {
5002               if (!rtl)
5003                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5004               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5005
5006               if (gtk_tree_view_draw_expanders (tree_view))
5007                 {
5008                   if (!rtl)
5009                     cell_area.x += depth * tree_view->priv->expander_size;
5010                   cell_area.width -= depth * tree_view->priv->expander_size;
5011                 }
5012
5013               /* If we have an expander column, the highlight underline
5014                * starts with that column, so that it indicates which
5015                * level of the tree we're dropping at.
5016                */
5017               highlight_x = cell_area.x;
5018               expander_cell_width = cell_area.width;
5019
5020               if (is_separator)
5021                 gtk_render_line (context, cr,
5022                                  cell_area.x,
5023                                  cell_area.y + cell_area.height / 2,
5024                                  cell_area.x + cell_area.width,
5025                                  cell_area.y + cell_area.height / 2);
5026               else
5027                 _gtk_tree_view_column_cell_render (column,
5028                                                    cr,
5029                                                    &background_area,
5030                                                    &cell_area,
5031                                                    flags,
5032                                                    draw_focus);
5033               if (gtk_tree_view_draw_expanders (tree_view)
5034                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5035                 {
5036                   if (!got_pointer)
5037                     {
5038                       gdk_window_get_pointer (tree_view->priv->bin_window,
5039                                               &pointer_x, &pointer_y, NULL);
5040                       got_pointer = TRUE;
5041                     }
5042
5043                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5044                                             cr,
5045                                             tree,
5046                                             node,
5047                                             pointer_x, pointer_y);
5048                 }
5049             }
5050           else
5051             {
5052               if (is_separator)
5053                 {
5054                   gtk_style_context_save (context);
5055                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5056
5057                   gtk_render_line (context, cr,
5058                                    cell_area.x,
5059                                    cell_area.y + cell_area.height / 2,
5060                                    cell_area.x + cell_area.width,
5061                                    cell_area.y + cell_area.height / 2);
5062
5063                   gtk_style_context_restore (context);
5064                 }
5065               else
5066                 _gtk_tree_view_column_cell_render (column,
5067                                                    cr,
5068                                                    &background_area,
5069                                                    &cell_area,
5070                                                    flags,
5071                                                    draw_focus);
5072             }
5073
5074           if (draw_hgrid_lines)
5075             {
5076               if (background_area.y > 0)
5077                 gtk_tree_view_draw_line (tree_view, cr,
5078                                          GTK_TREE_VIEW_GRID_LINE,
5079                                          background_area.x, background_area.y,
5080                                          background_area.x + background_area.width,
5081                                          background_area.y);
5082
5083               if (y_offset + max_height >= clip.height)
5084                 gtk_tree_view_draw_line (tree_view, cr,
5085                                          GTK_TREE_VIEW_GRID_LINE,
5086                                          background_area.x, background_area.y + max_height,
5087                                          background_area.x + background_area.width,
5088                                          background_area.y + max_height);
5089             }
5090
5091           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5092               tree_view->priv->tree_lines_enabled)
5093             {
5094               gint x = background_area.x;
5095               gint mult = rtl ? -1 : 1;
5096               gint y0 = background_area.y;
5097               gint y1 = background_area.y + background_area.height/2;
5098               gint y2 = background_area.y + background_area.height;
5099
5100               if (rtl)
5101                 x += background_area.width - 1;
5102
5103               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5104                   && depth > 1)
5105                 {
5106                   gtk_tree_view_draw_line (tree_view, cr,
5107                                            GTK_TREE_VIEW_TREE_LINE,
5108                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5109                                            y1,
5110                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5111                                            y1);
5112                 }
5113               else if (depth > 1)
5114                 {
5115                   gtk_tree_view_draw_line (tree_view, cr,
5116                                            GTK_TREE_VIEW_TREE_LINE,
5117                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5118                                            y1,
5119                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5120                                            y1);
5121                 }
5122
5123               if (depth > 1)
5124                 {
5125                   gint i;
5126                   GtkRBNode *tmp_node;
5127                   GtkRBTree *tmp_tree;
5128
5129                   if (!_gtk_rbtree_next (tree, node))
5130                     gtk_tree_view_draw_line (tree_view, cr,
5131                                              GTK_TREE_VIEW_TREE_LINE,
5132                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5133                                              y0,
5134                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5135                                              y1);
5136                   else
5137                     gtk_tree_view_draw_line (tree_view, cr,
5138                                              GTK_TREE_VIEW_TREE_LINE,
5139                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5140                                              y0,
5141                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5142                                              y2);
5143
5144                   tmp_node = tree->parent_node;
5145                   tmp_tree = tree->parent_tree;
5146
5147                   for (i = depth - 2; i > 0; i--)
5148                     {
5149                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5150                         gtk_tree_view_draw_line (tree_view, cr,
5151                                                  GTK_TREE_VIEW_TREE_LINE,
5152                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5153                                                  y0,
5154                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5155                                                  y2);
5156
5157                       tmp_node = tmp_tree->parent_node;
5158                       tmp_tree = tmp_tree->parent_tree;
5159                     }
5160                 }
5161             }
5162
5163           gtk_style_context_restore (context);
5164           cell_offset += gtk_tree_view_column_get_width (column);
5165         }
5166
5167       if (node == drag_highlight)
5168         {
5169           /* Draw indicator for the drop
5170            */
5171           gint highlight_y = -1;
5172           GtkRBTree *tree = NULL;
5173           GtkRBNode *node = NULL;
5174
5175           switch (tree_view->priv->drag_dest_pos)
5176             {
5177             case GTK_TREE_VIEW_DROP_BEFORE:
5178               highlight_y = background_area.y - 1;
5179               if (highlight_y < 0)
5180                       highlight_y = 0;
5181               break;
5182
5183             case GTK_TREE_VIEW_DROP_AFTER:
5184               highlight_y = background_area.y + background_area.height - 1;
5185               break;
5186
5187             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5188             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5189               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5190
5191               if (tree == NULL)
5192                 break;
5193
5194               gtk_render_focus (context, cr,
5195                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5196                                    - focus_line_width / 2,
5197                                 gdk_window_get_width (tree_view->priv->bin_window),
5198                                 gtk_tree_view_get_row_height (tree_view, node)
5199                                    - focus_line_width + 1);
5200               break;
5201             }
5202
5203           if (highlight_y >= 0)
5204             {
5205               gtk_tree_view_draw_line (tree_view, cr,
5206                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5207                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5208                                        highlight_y,
5209                                        rtl ? 0 : bin_window_width,
5210                                        highlight_y);
5211             }
5212         }
5213
5214       /* draw the big row-spanning focus rectangle, if needed */
5215       if (!has_can_focus_cell && node == cursor &&
5216           tree_view->priv->draw_keyfocus &&
5217           gtk_widget_has_focus (widget))
5218         {
5219           gint tmp_y, tmp_height;
5220           GtkStateFlags focus_rect_state = 0;
5221
5222           gtk_style_context_save (context);
5223
5224           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5225           gtk_style_context_set_state (context, focus_rect_state);
5226
5227           if (draw_hgrid_lines)
5228             {
5229               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5230               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5231             }
5232           else
5233             {
5234               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5235               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5236             }
5237
5238           gtk_render_focus (context, cr,
5239                             0, tmp_y,
5240                             gdk_window_get_width (tree_view->priv->bin_window),
5241                             tmp_height);
5242
5243           gtk_style_context_restore (context);
5244         }
5245
5246       y_offset += max_height;
5247       if (node->children)
5248         {
5249           GtkTreeIter parent = iter;
5250           gboolean has_child;
5251
5252           tree = node->children;
5253           node = tree->root;
5254
5255           g_assert (node != tree->nil);
5256
5257           while (node->left != tree->nil)
5258             node = node->left;
5259           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5260                                                     &iter,
5261                                                     &parent);
5262           depth++;
5263
5264           /* Sanity Check! */
5265           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5266         }
5267       else
5268         {
5269           gboolean done = FALSE;
5270
5271           do
5272             {
5273               node = _gtk_rbtree_next (tree, node);
5274               if (node != NULL)
5275                 {
5276                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5277                   done = TRUE;
5278
5279                   /* Sanity Check! */
5280                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5281                 }
5282               else
5283                 {
5284                   GtkTreeIter parent_iter = iter;
5285                   gboolean has_parent;
5286
5287                   node = tree->parent_node;
5288                   tree = tree->parent_tree;
5289                   if (tree == NULL)
5290                     /* we should go to done to free some memory */
5291                     goto done;
5292                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5293                                                            &iter,
5294                                                            &parent_iter);
5295                   depth--;
5296
5297                   /* Sanity check */
5298                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5299                 }
5300             }
5301           while (!done);
5302         }
5303     }
5304   while (y_offset < clip.height);
5305
5306 done:
5307   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5308
5309   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5310     gtk_tree_view_paint_rubber_band (tree_view, cr);
5311
5312   if (cursor_path)
5313     gtk_tree_path_free (cursor_path);
5314
5315   if (drag_dest_path)
5316     gtk_tree_path_free (drag_dest_path);
5317
5318   return FALSE;
5319 }
5320
5321 static gboolean
5322 gtk_tree_view_draw (GtkWidget *widget,
5323                     cairo_t   *cr)
5324 {
5325   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5326   GtkWidget   *button;
5327
5328   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5329     {
5330       GtkStyleContext *context;
5331       GList *tmp_list;
5332
5333       context = gtk_widget_get_style_context (widget);
5334
5335       cairo_save (cr);
5336
5337       gtk_style_context_save (context);
5338       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5339
5340       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5341
5342       gtk_tree_view_bin_draw (widget, cr);
5343
5344       gtk_style_context_restore (context);
5345       cairo_restore (cr);
5346
5347       /* We can't just chain up to Container::draw as it will try to send the
5348        * event to the headers, so we handle propagating it to our children
5349        * (eg. widgets being edited) ourselves.
5350        */
5351       tmp_list = tree_view->priv->children;
5352       while (tmp_list)
5353         {
5354           GtkTreeViewChild *child = tmp_list->data;
5355           tmp_list = tmp_list->next;
5356
5357           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5358         }
5359     }
5360
5361   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5362     {
5363       GList *list;
5364
5365       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5366         {
5367           GtkTreeViewColumn *column = list->data;
5368
5369           if (column == tree_view->priv->drag_column)
5370             continue;
5371
5372           if (gtk_tree_view_column_get_visible (column))
5373             {
5374               button = gtk_tree_view_column_get_button (column);
5375               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5376                                             button, cr);
5377             }
5378         }
5379     }
5380
5381   if (tree_view->priv->drag_window &&
5382       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5383     {
5384       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5385       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5386                                     button, cr);
5387     }
5388
5389   return TRUE;
5390 }
5391
5392 enum
5393 {
5394   DROP_HOME,
5395   DROP_RIGHT,
5396   DROP_LEFT,
5397   DROP_END
5398 };
5399
5400 /* returns 0x1 when no column has been found -- yes it's hackish */
5401 static GtkTreeViewColumn *
5402 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5403                                GtkTreeViewColumn *column,
5404                                gint               drop_position)
5405 {
5406   GtkTreeViewColumn *left_column = NULL;
5407   GtkTreeViewColumn *cur_column = NULL;
5408   GList *tmp_list;
5409
5410   if (!gtk_tree_view_column_get_reorderable (column))
5411     return (GtkTreeViewColumn *)0x1;
5412
5413   switch (drop_position)
5414     {
5415       case DROP_HOME:
5416         /* find first column where we can drop */
5417         tmp_list = tree_view->priv->columns;
5418         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5419           return (GtkTreeViewColumn *)0x1;
5420
5421         while (tmp_list)
5422           {
5423             g_assert (tmp_list);
5424
5425             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5426             tmp_list = tmp_list->next;
5427
5428             if (left_column &&
5429                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5430               continue;
5431
5432             if (!tree_view->priv->column_drop_func)
5433               return left_column;
5434
5435             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5436               {
5437                 left_column = cur_column;
5438                 continue;
5439               }
5440
5441             return left_column;
5442           }
5443
5444         if (!tree_view->priv->column_drop_func)
5445           return left_column;
5446
5447         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5448           return left_column;
5449         else
5450           return (GtkTreeViewColumn *)0x1;
5451         break;
5452
5453       case DROP_RIGHT:
5454         /* find first column after column where we can drop */
5455         tmp_list = tree_view->priv->columns;
5456
5457         for (; tmp_list; tmp_list = tmp_list->next)
5458           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5459             break;
5460
5461         if (!tmp_list || !tmp_list->next)
5462           return (GtkTreeViewColumn *)0x1;
5463
5464         tmp_list = tmp_list->next;
5465         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5466         tmp_list = tmp_list->next;
5467
5468         while (tmp_list)
5469           {
5470             g_assert (tmp_list);
5471
5472             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5473             tmp_list = tmp_list->next;
5474
5475             if (left_column &&
5476                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5477               {
5478                 left_column = cur_column;
5479                 if (tmp_list)
5480                   tmp_list = tmp_list->next;
5481                 continue;
5482               }
5483
5484             if (!tree_view->priv->column_drop_func)
5485               return left_column;
5486
5487             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5488               {
5489                 left_column = cur_column;
5490                 continue;
5491               }
5492
5493             return left_column;
5494           }
5495
5496         if (!tree_view->priv->column_drop_func)
5497           return left_column;
5498
5499         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5500           return left_column;
5501         else
5502           return (GtkTreeViewColumn *)0x1;
5503         break;
5504
5505       case DROP_LEFT:
5506         /* find first column before column where we can drop */
5507         tmp_list = tree_view->priv->columns;
5508
5509         for (; tmp_list; tmp_list = tmp_list->next)
5510           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5511             break;
5512
5513         if (!tmp_list || !tmp_list->prev)
5514           return (GtkTreeViewColumn *)0x1;
5515
5516         tmp_list = tmp_list->prev;
5517         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5518         tmp_list = tmp_list->prev;
5519
5520         while (tmp_list)
5521           {
5522             g_assert (tmp_list);
5523
5524             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5525
5526             if (left_column &&
5527                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5528               {
5529                 /*if (!tmp_list->prev)
5530                   return (GtkTreeViewColumn *)0x1;
5531                   */
5532 /*
5533                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5534                 tmp_list = tmp_list->prev->prev;
5535                 continue;*/
5536
5537                 cur_column = left_column;
5538                 if (tmp_list)
5539                   tmp_list = tmp_list->prev;
5540                 continue;
5541               }
5542
5543             if (!tree_view->priv->column_drop_func)
5544               return left_column;
5545
5546             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5547               return left_column;
5548
5549             cur_column = left_column;
5550             tmp_list = tmp_list->prev;
5551           }
5552
5553         if (!tree_view->priv->column_drop_func)
5554           return NULL;
5555
5556         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5557           return NULL;
5558         else
5559           return (GtkTreeViewColumn *)0x1;
5560         break;
5561
5562       case DROP_END:
5563         /* same as DROP_HOME case, but doing it backwards */
5564         tmp_list = g_list_last (tree_view->priv->columns);
5565         cur_column = NULL;
5566
5567         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5568           return (GtkTreeViewColumn *)0x1;
5569
5570         while (tmp_list)
5571           {
5572             g_assert (tmp_list);
5573
5574             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5575
5576             if (left_column &&
5577                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5578               {
5579                 cur_column = left_column;
5580                 tmp_list = tmp_list->prev;
5581               }
5582
5583             if (!tree_view->priv->column_drop_func)
5584               return left_column;
5585
5586             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5587               return left_column;
5588
5589             cur_column = left_column;
5590             tmp_list = tmp_list->prev;
5591           }
5592
5593         if (!tree_view->priv->column_drop_func)
5594           return NULL;
5595
5596         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5597           return NULL;
5598         else
5599           return (GtkTreeViewColumn *)0x1;
5600         break;
5601     }
5602
5603   return (GtkTreeViewColumn *)0x1;
5604 }
5605
5606 static gboolean
5607 gtk_tree_view_key_press (GtkWidget   *widget,
5608                          GdkEventKey *event)
5609 {
5610   GtkTreeView *tree_view = (GtkTreeView *) widget;
5611   GtkWidget   *button;
5612
5613   if (tree_view->priv->rubber_band_status)
5614     {
5615       if (event->keyval == GDK_KEY_Escape)
5616         gtk_tree_view_stop_rubber_band (tree_view);
5617
5618       return TRUE;
5619     }
5620
5621   if (tree_view->priv->in_column_drag)
5622     {
5623       if (event->keyval == GDK_KEY_Escape)
5624         {
5625           tree_view->priv->cur_reorder = NULL;
5626           gtk_tree_view_button_release_drag_column (widget, NULL);
5627         }
5628       return TRUE;
5629     }
5630
5631   if (tree_view->priv->headers_visible)
5632     {
5633       GList *focus_column;
5634       gboolean rtl;
5635
5636       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5637
5638       for (focus_column = tree_view->priv->columns;
5639            focus_column;
5640            focus_column = focus_column->next)
5641         {
5642           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5643
5644           button = gtk_tree_view_column_get_button (column);
5645           if (gtk_widget_has_focus (button))
5646             break;
5647         }
5648
5649       if (focus_column &&
5650           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5651           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5652            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5653         {
5654           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5655           gint max_width, min_width;
5656
5657           if (!gtk_tree_view_column_get_resizable (column))
5658             {
5659               gtk_widget_error_bell (widget);
5660               return TRUE;
5661             }
5662
5663           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5664               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5665             {
5666               GtkRequisition button_req;
5667               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5668               gint new_width;
5669
5670               button = gtk_tree_view_column_get_button (column);
5671
5672               gtk_widget_get_preferred_size (button, &button_req, NULL);
5673
5674               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5675               new_width -= 2;
5676               if (new_width < 0)
5677                 new_width = 0;
5678
5679               _gtk_tree_view_column_set_resized_width (column, new_width);
5680
5681               min_width = gtk_tree_view_column_get_min_width (column);
5682               if (min_width == -1)
5683                 new_width = MAX (button_req.width, new_width);
5684               else
5685                 {
5686                   new_width = MAX (min_width, new_width);
5687                 }
5688
5689               max_width = gtk_tree_view_column_get_max_width (column);
5690               if (max_width != -1)
5691                 new_width = MIN (new_width, max_width);
5692
5693               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5694
5695               if (new_width != old_width)
5696                 {
5697                   _gtk_tree_view_column_set_resized_width (column, new_width);
5698                   gtk_widget_queue_resize (widget);
5699                 }
5700               else
5701                 gtk_widget_error_bell (widget);
5702             }
5703           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5704                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5705             {
5706               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5707               gint new_width;
5708
5709               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5710               new_width += 2;
5711
5712               max_width = gtk_tree_view_column_get_max_width (column);
5713               if (max_width != -1)
5714                 new_width = MIN (new_width, max_width);
5715
5716               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5717
5718               if (new_width != old_width)
5719                 {
5720                   _gtk_tree_view_column_set_resized_width (column, new_width);
5721                   gtk_widget_queue_resize (widget);
5722                 }
5723               else
5724                 gtk_widget_error_bell (widget);
5725             }
5726
5727           return TRUE;
5728         }
5729
5730       if (focus_column &&
5731           (event->state & GDK_MOD1_MASK) &&
5732           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5733            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5734            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5735            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5736         {
5737           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5738
5739           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5740               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5741             {
5742               GtkTreeViewColumn *col;
5743               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5744               if (col != (GtkTreeViewColumn *)0x1)
5745                 gtk_tree_view_move_column_after (tree_view, column, col);
5746               else
5747                 gtk_widget_error_bell (widget);
5748             }
5749           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5750                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5751             {
5752               GtkTreeViewColumn *col;
5753               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5754               if (col != (GtkTreeViewColumn *)0x1)
5755                 gtk_tree_view_move_column_after (tree_view, column, col);
5756               else
5757                 gtk_widget_error_bell (widget);
5758             }
5759           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5760             {
5761               GtkTreeViewColumn *col;
5762               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5763               if (col != (GtkTreeViewColumn *)0x1)
5764                 gtk_tree_view_move_column_after (tree_view, column, col);
5765               else
5766                 gtk_widget_error_bell (widget);
5767             }
5768           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5769             {
5770               GtkTreeViewColumn *col;
5771               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5772               if (col != (GtkTreeViewColumn *)0x1)
5773                 gtk_tree_view_move_column_after (tree_view, column, col);
5774               else
5775                 gtk_widget_error_bell (widget);
5776             }
5777
5778           return TRUE;
5779         }
5780     }
5781
5782   /* Chain up to the parent class.  It handles the keybindings. */
5783   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5784     return TRUE;
5785
5786   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5787     {
5788       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5789       return FALSE;
5790     }
5791
5792   /* We pass the event to the search_entry.  If its text changes, then we start
5793    * the typeahead find capabilities. */
5794   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5795       && tree_view->priv->enable_search
5796       && !tree_view->priv->search_custom_entry_set)
5797     {
5798       GdkEvent *new_event;
5799       char *old_text;
5800       const char *new_text;
5801       gboolean retval;
5802       GdkScreen *screen;
5803       gboolean text_modified;
5804       gulong popup_menu_id;
5805
5806       gtk_tree_view_ensure_interactive_directory (tree_view);
5807
5808       /* Make a copy of the current text */
5809       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5810       new_event = gdk_event_copy ((GdkEvent *) event);
5811       g_object_unref (((GdkEventKey *) new_event)->window);
5812       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5813       gtk_widget_realize (tree_view->priv->search_window);
5814
5815       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5816                                         "popup-menu", G_CALLBACK (gtk_true),
5817                                         NULL);
5818
5819       /* Move the entry off screen */
5820       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5821       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5822                        gdk_screen_get_width (screen) + 1,
5823                        gdk_screen_get_height (screen) + 1);
5824       gtk_widget_show (tree_view->priv->search_window);
5825
5826       /* Send the event to the window.  If the preedit_changed signal is emitted
5827        * during this event, we will set priv->imcontext_changed  */
5828       tree_view->priv->imcontext_changed = FALSE;
5829       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5830       gdk_event_free (new_event);
5831       gtk_widget_hide (tree_view->priv->search_window);
5832
5833       g_signal_handler_disconnect (tree_view->priv->search_entry,
5834                                    popup_menu_id);
5835
5836       /* We check to make sure that the entry tried to handle the text, and that
5837        * the text has changed.
5838        */
5839       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5840       text_modified = strcmp (old_text, new_text) != 0;
5841       g_free (old_text);
5842       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5843           (retval && text_modified))               /* ...or the text was modified */
5844         {
5845           if (gtk_tree_view_real_start_interactive_search (tree_view,
5846                                                            gdk_event_get_device ((GdkEvent *) event),
5847                                                            FALSE))
5848             {
5849               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5850               return TRUE;
5851             }
5852           else
5853             {
5854               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5855               return FALSE;
5856             }
5857         }
5858     }
5859
5860   return FALSE;
5861 }
5862
5863 static gboolean
5864 gtk_tree_view_key_release (GtkWidget   *widget,
5865                            GdkEventKey *event)
5866 {
5867   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5868
5869   if (tree_view->priv->rubber_band_status)
5870     return TRUE;
5871
5872   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5873 }
5874
5875 /* FIXME Is this function necessary? Can I get an enter_notify event
5876  * w/o either an expose event or a mouse motion event?
5877  */
5878 static gboolean
5879 gtk_tree_view_enter_notify (GtkWidget        *widget,
5880                             GdkEventCrossing *event)
5881 {
5882   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5883   GtkRBTree *tree;
5884   GtkRBNode *node;
5885   gint new_y;
5886
5887   /* Sanity check it */
5888   if (event->window != tree_view->priv->bin_window)
5889     return FALSE;
5890
5891   if (tree_view->priv->tree == NULL)
5892     return FALSE;
5893
5894   if (event->mode == GDK_CROSSING_GRAB ||
5895       event->mode == GDK_CROSSING_GTK_GRAB ||
5896       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5897       event->mode == GDK_CROSSING_STATE_CHANGED)
5898     return TRUE;
5899
5900   /* find the node internally */
5901   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5902   if (new_y < 0)
5903     new_y = 0;
5904   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5905
5906   tree_view->priv->event_last_x = event->x;
5907   tree_view->priv->event_last_y = event->y;
5908
5909   if ((tree_view->priv->button_pressed_node == NULL) ||
5910       (tree_view->priv->button_pressed_node == node))
5911     prelight_or_select (tree_view, tree, node, event->x, event->y);
5912
5913   return TRUE;
5914 }
5915
5916 static gboolean
5917 gtk_tree_view_leave_notify (GtkWidget        *widget,
5918                             GdkEventCrossing *event)
5919 {
5920   GtkTreeView *tree_view;
5921
5922   if (event->mode == GDK_CROSSING_GRAB)
5923     return TRUE;
5924
5925   tree_view = GTK_TREE_VIEW (widget);
5926
5927   if (tree_view->priv->prelight_node)
5928     _gtk_tree_view_queue_draw_node (tree_view,
5929                                    tree_view->priv->prelight_tree,
5930                                    tree_view->priv->prelight_node,
5931                                    NULL);
5932
5933   tree_view->priv->event_last_x = -10000;
5934   tree_view->priv->event_last_y = -10000;
5935
5936   prelight_or_select (tree_view,
5937                       NULL, NULL,
5938                       -1000, -1000); /* coords not possibly over an arrow */
5939
5940   return TRUE;
5941 }
5942
5943
5944 static gint
5945 gtk_tree_view_focus_out (GtkWidget     *widget,
5946                          GdkEventFocus *event)
5947 {
5948   GtkTreeView *tree_view;
5949
5950   tree_view = GTK_TREE_VIEW (widget);
5951
5952   gtk_widget_queue_draw (widget);
5953
5954   /* destroy interactive search dialog */
5955   if (tree_view->priv->search_window)
5956     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5957                                       gdk_event_get_device ((GdkEvent *) event));
5958
5959   return FALSE;
5960 }
5961
5962
5963 /* Incremental Reflow
5964  */
5965
5966 static void
5967 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5968                                  GtkRBTree   *tree,
5969                                  GtkRBNode   *node)
5970 {
5971   GtkAllocation allocation;
5972   gint y;
5973
5974   y = _gtk_rbtree_node_find_offset (tree, node)
5975     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5976     + gtk_tree_view_get_effective_header_height (tree_view);
5977
5978   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5979   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5980                               0, y,
5981                               allocation.width,
5982                               GTK_RBNODE_GET_HEIGHT (node));
5983 }
5984
5985 static gboolean
5986 node_is_visible (GtkTreeView *tree_view,
5987                  GtkRBTree   *tree,
5988                  GtkRBNode   *node)
5989 {
5990   int y;
5991   int height;
5992
5993   y = _gtk_rbtree_node_find_offset (tree, node);
5994   height = gtk_tree_view_get_row_height (tree_view, node);
5995
5996   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
5997       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
5998                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
5999     return TRUE;
6000
6001   return FALSE;
6002 }
6003
6004 /* Returns TRUE if it updated the size
6005  */
6006 static gboolean
6007 validate_row (GtkTreeView *tree_view,
6008               GtkRBTree   *tree,
6009               GtkRBNode   *node,
6010               GtkTreeIter *iter,
6011               GtkTreePath *path)
6012 {
6013   GtkTreeViewColumn *column;
6014   GList *list, *first_column, *last_column;
6015   gint height = 0;
6016   gint horizontal_separator;
6017   gint vertical_separator;
6018   gint depth = gtk_tree_path_get_depth (path);
6019   gboolean retval = FALSE;
6020   gboolean is_separator = FALSE;
6021   gboolean draw_vgrid_lines, draw_hgrid_lines;
6022   gint focus_pad;
6023   gint grid_line_width;
6024   gboolean wide_separators;
6025   gint separator_height;
6026
6027   /* double check the row needs validating */
6028   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6029       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6030     return FALSE;
6031
6032   is_separator = row_is_separator (tree_view, iter, NULL);
6033
6034   gtk_widget_style_get (GTK_WIDGET (tree_view),
6035                         "focus-padding", &focus_pad,
6036                         "horizontal-separator", &horizontal_separator,
6037                         "vertical-separator", &vertical_separator,
6038                         "grid-line-width", &grid_line_width,
6039                         "wide-separators",  &wide_separators,
6040                         "separator-height", &separator_height,
6041                         NULL);
6042
6043   draw_vgrid_lines =
6044     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6045     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6046   draw_hgrid_lines =
6047     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6048     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6049
6050   for (last_column = g_list_last (tree_view->priv->columns);
6051        last_column &&
6052        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6053        last_column = last_column->prev)
6054     ;
6055
6056   for (first_column = g_list_first (tree_view->priv->columns);
6057        first_column &&
6058        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6059        first_column = first_column->next)
6060     ;
6061
6062   for (list = tree_view->priv->columns; list; list = list->next)
6063     {
6064       gint padding = 0;
6065       gint original_width;
6066       gint new_width;
6067       gint row_height;
6068
6069       column = list->data;
6070
6071       if (!gtk_tree_view_column_get_visible (column))
6072         continue;
6073
6074       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6075           !_gtk_tree_view_column_cell_get_dirty (column))
6076         continue;
6077
6078       original_width = _gtk_tree_view_column_get_requested_width (column);
6079
6080       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6081                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6082                                                node->children?TRUE:FALSE);
6083       gtk_tree_view_column_cell_get_size (column,
6084                                           NULL, NULL, NULL,
6085                                           NULL, &row_height);
6086
6087       if (!is_separator)
6088         {
6089           row_height += vertical_separator;
6090           height = MAX (height, row_height);
6091           height = MAX (height, tree_view->priv->expander_size);
6092         }
6093       else
6094         {
6095           if (wide_separators)
6096             height = separator_height + 2 * focus_pad;
6097           else
6098             height = 2 + 2 * focus_pad;
6099         }
6100
6101       if (gtk_tree_view_is_expander_column (tree_view, column))
6102         {
6103           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6104
6105           if (gtk_tree_view_draw_expanders (tree_view))
6106             padding += depth * tree_view->priv->expander_size;
6107         }
6108       else
6109         padding += horizontal_separator;
6110
6111       if (draw_vgrid_lines)
6112         {
6113           if (list->data == first_column || list->data == last_column)
6114             padding += grid_line_width / 2.0;
6115           else
6116             padding += grid_line_width;
6117         }
6118
6119       /* Update the padding for the column */
6120       _gtk_tree_view_column_push_padding (column, padding);
6121       new_width = _gtk_tree_view_column_get_requested_width (column);
6122
6123       if (new_width > original_width)
6124         retval = TRUE;
6125     }
6126
6127   if (draw_hgrid_lines)
6128     height += grid_line_width;
6129
6130   if (height != GTK_RBNODE_GET_HEIGHT (node))
6131     {
6132       retval = TRUE;
6133       _gtk_rbtree_node_set_height (tree, node, height);
6134     }
6135   _gtk_rbtree_node_mark_valid (tree, node);
6136   tree_view->priv->post_validation_flag = TRUE;
6137
6138   return retval;
6139 }
6140
6141
6142 static void
6143 validate_visible_area (GtkTreeView *tree_view)
6144 {
6145   GtkAllocation allocation;
6146   GtkTreePath *path = NULL;
6147   GtkTreePath *above_path = NULL;
6148   GtkTreeIter iter;
6149   GtkRBTree *tree = NULL;
6150   GtkRBNode *node = NULL;
6151   gboolean need_redraw = FALSE;
6152   gboolean size_changed = FALSE;
6153   gint total_height;
6154   gint area_above = 0;
6155   gint area_below = 0;
6156
6157   if (tree_view->priv->tree == NULL)
6158     return;
6159
6160   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6161       tree_view->priv->scroll_to_path == NULL)
6162     return;
6163
6164   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6165   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6166
6167   if (total_height == 0)
6168     return;
6169
6170   /* First, we check to see if we need to scroll anywhere
6171    */
6172   if (tree_view->priv->scroll_to_path)
6173     {
6174       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6175       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6176         {
6177           /* we are going to scroll, and will update dy */
6178           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6179           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6180               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6181             {
6182               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6183               if (validate_row (tree_view, tree, node, &iter, path))
6184                 size_changed = TRUE;
6185             }
6186
6187           if (tree_view->priv->scroll_to_use_align)
6188             {
6189               gint height = gtk_tree_view_get_row_height (tree_view, node);
6190               area_above = (total_height - height) *
6191                 tree_view->priv->scroll_to_row_align;
6192               area_below = total_height - area_above - height;
6193               area_above = MAX (area_above, 0);
6194               area_below = MAX (area_below, 0);
6195             }
6196           else
6197             {
6198               /* two cases:
6199                * 1) row not visible
6200                * 2) row visible
6201                */
6202               gint dy;
6203               gint height = gtk_tree_view_get_row_height (tree_view, node);
6204
6205               dy = _gtk_rbtree_node_find_offset (tree, node);
6206
6207               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6208                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6209                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6210                 {
6211                   /* row visible: keep the row at the same position */
6212                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6213                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6214                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6215                                - dy - height;
6216                 }
6217               else
6218                 {
6219                   /* row not visible */
6220                   if (dy >= 0
6221                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6222                     {
6223                       /* row at the beginning -- fixed */
6224                       area_above = dy;
6225                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6226                                    - area_above - height;
6227                     }
6228                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6229                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6230                     {
6231                       /* row at the end -- fixed */
6232                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6233                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6234                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6235                                    area_above - height;
6236
6237                       if (area_below < 0)
6238                         {
6239                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6240                           area_below = 0;
6241                         }
6242                     }
6243                   else
6244                     {
6245                       /* row somewhere in the middle, bring it to the top
6246                        * of the view
6247                        */
6248                       area_above = 0;
6249                       area_below = total_height - height;
6250                     }
6251                 }
6252             }
6253         }
6254       else
6255         /* the scroll to isn't valid; ignore it.
6256          */
6257         {
6258           if (tree_view->priv->scroll_to_path && !path)
6259             {
6260               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6261               tree_view->priv->scroll_to_path = NULL;
6262             }
6263           if (path)
6264             gtk_tree_path_free (path);
6265           path = NULL;
6266         }
6267     }
6268
6269   /* We didn't have a scroll_to set, so we just handle things normally
6270    */
6271   if (path == NULL)
6272     {
6273       gint offset;
6274
6275       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6276                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6277                                         &tree, &node);
6278       if (node == NULL)
6279         {
6280           /* In this case, nothing has been validated */
6281           path = gtk_tree_path_new_first ();
6282           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6283         }
6284       else
6285         {
6286           path = _gtk_tree_view_find_path (tree_view, tree, node);
6287           total_height += offset;
6288         }
6289
6290       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6291
6292       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6293           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6294         {
6295           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6296           if (validate_row (tree_view, tree, node, &iter, path))
6297             size_changed = TRUE;
6298         }
6299       area_above = 0;
6300       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6301     }
6302
6303   above_path = gtk_tree_path_copy (path);
6304
6305   /* if we do not validate any row above the new top_row, we will make sure
6306    * that the row immediately above top_row has been validated. (if we do not
6307    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6308    * when invalidated that row's height will be zero. and this will mess up
6309    * scrolling).
6310    */
6311   if (area_above == 0)
6312     {
6313       GtkRBTree *tmptree;
6314       GtkRBNode *tmpnode;
6315
6316       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6317       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6318
6319       if (tmpnode)
6320         {
6321           GtkTreePath *tmppath;
6322           GtkTreeIter tmpiter;
6323
6324           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6325           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6326
6327           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6328               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6329             {
6330               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6331               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6332                 size_changed = TRUE;
6333             }
6334
6335           gtk_tree_path_free (tmppath);
6336         }
6337     }
6338
6339   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6340    * backwards is much slower then forward, as there is no iter_prev function.
6341    * We go forwards first in case we run out of tree.  Then we go backwards to
6342    * fill out the top.
6343    */
6344   while (node && area_below > 0)
6345     {
6346       if (node->children)
6347         {
6348           GtkTreeIter parent = iter;
6349           gboolean has_child;
6350
6351           tree = node->children;
6352           node = tree->root;
6353
6354           g_assert (node != tree->nil);
6355
6356           while (node->left != tree->nil)
6357             node = node->left;
6358           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6359                                                     &iter,
6360                                                     &parent);
6361           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6362           gtk_tree_path_down (path);
6363         }
6364       else
6365         {
6366           gboolean done = FALSE;
6367           do
6368             {
6369               node = _gtk_rbtree_next (tree, node);
6370               if (node != NULL)
6371                 {
6372                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6373                   done = TRUE;
6374                   gtk_tree_path_next (path);
6375
6376                   /* Sanity Check! */
6377                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6378                 }
6379               else
6380                 {
6381                   GtkTreeIter parent_iter = iter;
6382                   gboolean has_parent;
6383
6384                   node = tree->parent_node;
6385                   tree = tree->parent_tree;
6386                   if (tree == NULL)
6387                     break;
6388                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6389                                                            &iter,
6390                                                            &parent_iter);
6391                   gtk_tree_path_up (path);
6392
6393                   /* Sanity check */
6394                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6395                 }
6396             }
6397           while (!done);
6398         }
6399
6400       if (!node)
6401         break;
6402
6403       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6404           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6405         {
6406           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6407           if (validate_row (tree_view, tree, node, &iter, path))
6408               size_changed = TRUE;
6409         }
6410
6411       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6412     }
6413   gtk_tree_path_free (path);
6414
6415   /* If we ran out of tree, and have extra area_below left, we need to add it
6416    * to area_above */
6417   if (area_below > 0)
6418     area_above += area_below;
6419
6420   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6421
6422   /* We walk backwards */
6423   while (area_above > 0)
6424     {
6425       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6426
6427       /* Always find the new path in the tree.  We cannot just assume
6428        * a gtk_tree_path_prev() is enough here, as there might be children
6429        * in between this node and the previous sibling node.  If this
6430        * appears to be a performance hotspot in profiles, we can look into
6431        * intrigate logic for keeping path, node and iter in sync like
6432        * we do for forward walks.  (Which will be hard because of the lacking
6433        * iter_prev).
6434        */
6435
6436       if (node == NULL)
6437         break;
6438
6439       gtk_tree_path_free (above_path);
6440       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6441
6442       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6443
6444       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6445           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6446         {
6447           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6448           if (validate_row (tree_view, tree, node, &iter, above_path))
6449             size_changed = TRUE;
6450         }
6451       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6452     }
6453
6454   /* if we scrolled to a path, we need to set the dy here,
6455    * and sync the top row accordingly
6456    */
6457   if (tree_view->priv->scroll_to_path)
6458     {
6459       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6460       gtk_tree_view_top_row_to_dy (tree_view);
6461
6462       need_redraw = TRUE;
6463     }
6464   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6465     {
6466       /* when we are not scrolling, we should never set dy to something
6467        * else than zero. we update top_row to be in sync with dy = 0.
6468        */
6469       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6470       gtk_tree_view_dy_to_top_row (tree_view);
6471     }
6472   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6473     {
6474       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6475       gtk_tree_view_dy_to_top_row (tree_view);
6476     }
6477   else
6478     gtk_tree_view_top_row_to_dy (tree_view);
6479
6480   /* update width/height and queue a resize */
6481   if (size_changed)
6482     {
6483       GtkRequisition requisition;
6484
6485       /* We temporarily guess a size, under the assumption that it will be the
6486        * same when we get our next size_allocate.  If we don't do this, we'll be
6487        * in an inconsistent state if we call top_row_to_dy. */
6488
6489       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6490                                      &requisition, NULL);
6491       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6492                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6493       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6494                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6495       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6496     }
6497
6498   if (tree_view->priv->scroll_to_path)
6499     {
6500       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6501       tree_view->priv->scroll_to_path = NULL;
6502     }
6503
6504   if (above_path)
6505     gtk_tree_path_free (above_path);
6506
6507   if (tree_view->priv->scroll_to_column)
6508     {
6509       tree_view->priv->scroll_to_column = NULL;
6510     }
6511   if (need_redraw)
6512     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6513 }
6514
6515 static void
6516 initialize_fixed_height_mode (GtkTreeView *tree_view)
6517 {
6518   if (!tree_view->priv->tree)
6519     return;
6520
6521   if (tree_view->priv->fixed_height < 0)
6522     {
6523       GtkTreeIter iter;
6524       GtkTreePath *path;
6525
6526       GtkRBTree *tree = NULL;
6527       GtkRBNode *node = NULL;
6528
6529       tree = tree_view->priv->tree;
6530       node = tree->root;
6531
6532       path = _gtk_tree_view_find_path (tree_view, tree, node);
6533       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6534
6535       validate_row (tree_view, tree, node, &iter, path);
6536
6537       gtk_tree_path_free (path);
6538
6539       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6540     }
6541
6542    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6543                                  tree_view->priv->fixed_height, TRUE);
6544 }
6545
6546 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6547  * the left-most uninvalidated node.  We then try walking right, validating
6548  * nodes.  Once we find a valid node, we repeat the previous process of finding
6549  * the first invalid node.
6550  */
6551
6552 static gboolean
6553 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6554 {
6555   GtkRBTree *tree = NULL;
6556   GtkRBNode *node = NULL;
6557   gboolean validated_area = FALSE;
6558   gint retval = TRUE;
6559   GtkTreePath *path = NULL;
6560   GtkTreeIter iter;
6561   GTimer *timer;
6562   gint i = 0;
6563
6564   gint y = -1;
6565   gint prev_height = -1;
6566   gboolean fixed_height = TRUE;
6567
6568   g_assert (tree_view);
6569
6570   if (tree_view->priv->tree == NULL)
6571       return FALSE;
6572
6573   if (tree_view->priv->fixed_height_mode)
6574     {
6575       if (tree_view->priv->fixed_height < 0)
6576         initialize_fixed_height_mode (tree_view);
6577
6578       return FALSE;
6579     }
6580
6581   timer = g_timer_new ();
6582   g_timer_start (timer);
6583
6584   do
6585     {
6586       gboolean changed = FALSE;
6587
6588       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6589         {
6590           retval = FALSE;
6591           goto done;
6592         }
6593
6594       if (path != NULL)
6595         {
6596           node = _gtk_rbtree_next (tree, node);
6597           if (node != NULL)
6598             {
6599               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6600               gtk_tree_path_next (path);
6601             }
6602           else
6603             {
6604               gtk_tree_path_free (path);
6605               path = NULL;
6606             }
6607         }
6608
6609       if (path == NULL)
6610         {
6611           tree = tree_view->priv->tree;
6612           node = tree_view->priv->tree->root;
6613
6614           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6615
6616           do
6617             {
6618               if (node->left != tree->nil &&
6619                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6620                 {
6621                   node = node->left;
6622                 }
6623               else if (node->right != tree->nil &&
6624                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6625                 {
6626                   node = node->right;
6627                 }
6628               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6629                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6630                 {
6631                   break;
6632                 }
6633               else if (node->children != NULL)
6634                 {
6635                   tree = node->children;
6636                   node = tree->root;
6637                 }
6638               else
6639                 /* RBTree corruption!  All bad */
6640                 g_assert_not_reached ();
6641             }
6642           while (TRUE);
6643           path = _gtk_tree_view_find_path (tree_view, tree, node);
6644           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6645         }
6646
6647       changed = validate_row (tree_view, tree, node, &iter, path);
6648       validated_area = changed || validated_area;
6649
6650       if (changed)
6651         {
6652           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6653
6654           if (y == -1 || y > offset)
6655             y = offset;
6656         }
6657
6658       if (!tree_view->priv->fixed_height_check)
6659         {
6660           gint height;
6661
6662           height = gtk_tree_view_get_row_height (tree_view, node);
6663           if (prev_height < 0)
6664             prev_height = height;
6665           else if (prev_height != height)
6666             fixed_height = FALSE;
6667         }
6668
6669       i++;
6670     }
6671   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6672
6673   if (!tree_view->priv->fixed_height_check)
6674    {
6675      if (fixed_height)
6676        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6677
6678      tree_view->priv->fixed_height_check = 1;
6679    }
6680
6681  done:
6682   if (validated_area)
6683     {
6684       GtkRequisition requisition;
6685
6686       /* We temporarily guess a size, under the assumption that it will be the
6687        * same when we get our next size_allocate.  If we don't do this, we'll be
6688        * in an inconsistent state when we call top_row_to_dy. */
6689
6690       /* FIXME: This is called from size_request, for some reason it is not infinitely
6691        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6692        * not allowed (from inside ->get_preferred_width/height() implementations, one
6693        * should call the vfuncs directly). However what is desired here is the full
6694        * size including any margins and limited by any alignment (i.e. after
6695        * GtkWidget:adjust_size_request() is called).
6696        *
6697        * Currently bypassing this but the real solution is to not update the scroll adjustments
6698        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6699        */
6700       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6701
6702       /* If rows above the current position have changed height, this has
6703        * affected the current view and thus needs a redraw.
6704        */
6705       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6706         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6707
6708       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6709                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6710       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6711                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6712
6713       if (queue_resize)
6714         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6715     }
6716
6717   if (path) gtk_tree_path_free (path);
6718   g_timer_destroy (timer);
6719
6720   return retval;
6721 }
6722
6723 static gboolean
6724 validate_rows (GtkTreeView *tree_view)
6725 {
6726   gboolean retval;
6727
6728   retval = do_validate_rows (tree_view, TRUE);
6729
6730   if (! retval && tree_view->priv->validate_rows_timer)
6731     {
6732       g_source_remove (tree_view->priv->validate_rows_timer);
6733       tree_view->priv->validate_rows_timer = 0;
6734     }
6735
6736   return retval;
6737 }
6738
6739 static gboolean
6740 validate_rows_handler (GtkTreeView *tree_view)
6741 {
6742   gboolean retval;
6743
6744   retval = do_validate_rows (tree_view, TRUE);
6745   if (! retval && tree_view->priv->validate_rows_timer)
6746     {
6747       g_source_remove (tree_view->priv->validate_rows_timer);
6748       tree_view->priv->validate_rows_timer = 0;
6749     }
6750
6751   return retval;
6752 }
6753
6754 static gboolean
6755 do_presize_handler (GtkTreeView *tree_view)
6756 {
6757   if (tree_view->priv->mark_rows_col_dirty)
6758     {
6759       if (tree_view->priv->tree)
6760         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6761       tree_view->priv->mark_rows_col_dirty = FALSE;
6762     }
6763   validate_visible_area (tree_view);
6764   tree_view->priv->presize_handler_timer = 0;
6765
6766   if (tree_view->priv->fixed_height_mode)
6767     {
6768       GtkRequisition requisition;
6769
6770       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6771                                      &requisition, NULL);
6772
6773       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6774                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6775       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6776                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6777       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6778     }
6779
6780   return FALSE;
6781 }
6782
6783 static gboolean
6784 presize_handler_callback (gpointer data)
6785 {
6786   do_presize_handler (GTK_TREE_VIEW (data));
6787
6788   return FALSE;
6789 }
6790
6791 static void
6792 install_presize_handler (GtkTreeView *tree_view)
6793 {
6794   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6795     return;
6796
6797   if (! tree_view->priv->presize_handler_timer)
6798     {
6799       tree_view->priv->presize_handler_timer =
6800         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6801     }
6802   if (! tree_view->priv->validate_rows_timer)
6803     {
6804       tree_view->priv->validate_rows_timer =
6805         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6806     }
6807 }
6808
6809 static void
6810 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6811 {
6812   /* Prior to drawing, we make sure the visible area is validated. */
6813   if (tree_view->priv->presize_handler_timer)
6814     {
6815       g_source_remove (tree_view->priv->presize_handler_timer);
6816       tree_view->priv->presize_handler_timer = 0;
6817
6818       do_presize_handler (tree_view);
6819     }
6820
6821   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6822 }
6823
6824 static gboolean
6825 scroll_sync_handler (GtkTreeView *tree_view)
6826 {
6827   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6828     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6829   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6830     gtk_tree_view_top_row_to_dy (tree_view);
6831   else
6832     gtk_tree_view_dy_to_top_row (tree_view);
6833
6834   tree_view->priv->scroll_sync_timer = 0;
6835
6836   return FALSE;
6837 }
6838
6839 static void
6840 install_scroll_sync_handler (GtkTreeView *tree_view)
6841 {
6842   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6843     return;
6844
6845   if (!tree_view->priv->scroll_sync_timer)
6846     {
6847       tree_view->priv->scroll_sync_timer =
6848         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6849     }
6850 }
6851
6852 static void
6853 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6854                            GtkTreePath *path,
6855                            gint         offset)
6856 {
6857   gtk_tree_row_reference_free (tree_view->priv->top_row);
6858
6859   if (!path)
6860     {
6861       tree_view->priv->top_row = NULL;
6862       tree_view->priv->top_row_dy = 0;
6863     }
6864   else
6865     {
6866       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6867       tree_view->priv->top_row_dy = offset;
6868     }
6869 }
6870
6871 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6872  * it's set to be NULL, and top_row_dy is 0;
6873  */
6874 static void
6875 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6876 {
6877   gint offset;
6878   GtkTreePath *path;
6879   GtkRBTree *tree;
6880   GtkRBNode *node;
6881
6882   if (tree_view->priv->tree == NULL)
6883     {
6884       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6885     }
6886   else
6887     {
6888       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6889                                         tree_view->priv->dy,
6890                                         &tree, &node);
6891
6892       if (tree == NULL)
6893         {
6894           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6895         }
6896       else
6897         {
6898           path = _gtk_tree_view_find_path (tree_view, tree, node);
6899           gtk_tree_view_set_top_row (tree_view, path, offset);
6900           gtk_tree_path_free (path);
6901         }
6902     }
6903 }
6904
6905 static void
6906 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6907 {
6908   GtkTreePath *path;
6909   GtkRBTree *tree;
6910   GtkRBNode *node;
6911   int new_dy;
6912
6913   /* Avoid recursive calls */
6914   if (tree_view->priv->in_top_row_to_dy)
6915     return;
6916
6917   if (tree_view->priv->top_row)
6918     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6919   else
6920     path = NULL;
6921
6922   if (!path)
6923     tree = NULL;
6924   else
6925     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6926
6927   if (path)
6928     gtk_tree_path_free (path);
6929
6930   if (tree == NULL)
6931     {
6932       /* keep dy and set new toprow */
6933       gtk_tree_row_reference_free (tree_view->priv->top_row);
6934       tree_view->priv->top_row = NULL;
6935       tree_view->priv->top_row_dy = 0;
6936       /* DO NOT install the idle handler */
6937       gtk_tree_view_dy_to_top_row (tree_view);
6938       return;
6939     }
6940
6941   if (gtk_tree_view_get_row_height (tree_view, node)
6942       < tree_view->priv->top_row_dy)
6943     {
6944       /* new top row -- do NOT install the idle handler */
6945       gtk_tree_view_dy_to_top_row (tree_view);
6946       return;
6947     }
6948
6949   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6950   new_dy += tree_view->priv->top_row_dy;
6951
6952   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6953     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6954
6955   new_dy = MAX (0, new_dy);
6956
6957   tree_view->priv->in_top_row_to_dy = TRUE;
6958   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6959   tree_view->priv->in_top_row_to_dy = FALSE;
6960 }
6961
6962
6963 void
6964 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6965                                             gboolean     install_handler)
6966 {
6967   tree_view->priv->mark_rows_col_dirty = TRUE;
6968
6969   if (install_handler)
6970     install_presize_handler (tree_view);
6971 }
6972
6973 /*
6974  * This function works synchronously (due to the while (validate_rows...)
6975  * loop).
6976  *
6977  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6978  * here. You now need to check that yourself.
6979  */
6980 void
6981 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6982                                 GtkTreeViewColumn *column)
6983 {
6984   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6985   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6986
6987   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6988
6989   do_presize_handler (tree_view);
6990   while (validate_rows (tree_view));
6991
6992   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6993 }
6994
6995 /* Drag-and-drop */
6996
6997 static void
6998 set_source_row (GdkDragContext *context,
6999                 GtkTreeModel   *model,
7000                 GtkTreePath    *source_row)
7001 {
7002   g_object_set_data_full (G_OBJECT (context),
7003                           I_("gtk-tree-view-source-row"),
7004                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7005                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7006 }
7007
7008 static GtkTreePath*
7009 get_source_row (GdkDragContext *context)
7010 {
7011   GtkTreeRowReference *ref =
7012     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7013
7014   if (ref)
7015     return gtk_tree_row_reference_get_path (ref);
7016   else
7017     return NULL;
7018 }
7019
7020 typedef struct
7021 {
7022   GtkTreeRowReference *dest_row;
7023   guint                path_down_mode   : 1;
7024   guint                empty_view_drop  : 1;
7025   guint                drop_append_mode : 1;
7026 }
7027 DestRow;
7028
7029 static void
7030 dest_row_free (gpointer data)
7031 {
7032   DestRow *dr = (DestRow *)data;
7033
7034   gtk_tree_row_reference_free (dr->dest_row);
7035   g_slice_free (DestRow, dr);
7036 }
7037
7038 static void
7039 set_dest_row (GdkDragContext *context,
7040               GtkTreeModel   *model,
7041               GtkTreePath    *dest_row,
7042               gboolean        path_down_mode,
7043               gboolean        empty_view_drop,
7044               gboolean        drop_append_mode)
7045 {
7046   DestRow *dr;
7047
7048   if (!dest_row)
7049     {
7050       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7051                               NULL, NULL);
7052       return;
7053     }
7054
7055   dr = g_slice_new (DestRow);
7056
7057   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7058   dr->path_down_mode = path_down_mode != FALSE;
7059   dr->empty_view_drop = empty_view_drop != FALSE;
7060   dr->drop_append_mode = drop_append_mode != FALSE;
7061
7062   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7063                           dr, (GDestroyNotify) dest_row_free);
7064 }
7065
7066 static GtkTreePath*
7067 get_dest_row (GdkDragContext *context,
7068               gboolean       *path_down_mode)
7069 {
7070   DestRow *dr =
7071     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7072
7073   if (dr)
7074     {
7075       GtkTreePath *path = NULL;
7076
7077       if (path_down_mode)
7078         *path_down_mode = dr->path_down_mode;
7079
7080       if (dr->dest_row)
7081         path = gtk_tree_row_reference_get_path (dr->dest_row);
7082       else if (dr->empty_view_drop)
7083         path = gtk_tree_path_new_from_indices (0, -1);
7084       else
7085         path = NULL;
7086
7087       if (path && dr->drop_append_mode)
7088         gtk_tree_path_next (path);
7089
7090       return path;
7091     }
7092   else
7093     return NULL;
7094 }
7095
7096 /* Get/set whether drag_motion requested the drag data and
7097  * drag_data_received should thus not actually insert the data,
7098  * since the data doesn't result from a drop.
7099  */
7100 static void
7101 set_status_pending (GdkDragContext *context,
7102                     GdkDragAction   suggested_action)
7103 {
7104   g_object_set_data (G_OBJECT (context),
7105                      I_("gtk-tree-view-status-pending"),
7106                      GINT_TO_POINTER (suggested_action));
7107 }
7108
7109 static GdkDragAction
7110 get_status_pending (GdkDragContext *context)
7111 {
7112   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7113                                              "gtk-tree-view-status-pending"));
7114 }
7115
7116 static TreeViewDragInfo*
7117 get_info (GtkTreeView *tree_view)
7118 {
7119   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7120 }
7121
7122 static void
7123 destroy_info (TreeViewDragInfo *di)
7124 {
7125   g_slice_free (TreeViewDragInfo, di);
7126 }
7127
7128 static TreeViewDragInfo*
7129 ensure_info (GtkTreeView *tree_view)
7130 {
7131   TreeViewDragInfo *di;
7132
7133   di = get_info (tree_view);
7134
7135   if (di == NULL)
7136     {
7137       di = g_slice_new0 (TreeViewDragInfo);
7138
7139       g_object_set_data_full (G_OBJECT (tree_view),
7140                               I_("gtk-tree-view-drag-info"),
7141                               di,
7142                               (GDestroyNotify) destroy_info);
7143     }
7144
7145   return di;
7146 }
7147
7148 static void
7149 remove_info (GtkTreeView *tree_view)
7150 {
7151   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7152 }
7153
7154 #if 0
7155 static gint
7156 drag_scan_timeout (gpointer data)
7157 {
7158   GtkTreeView *tree_view;
7159   gint x, y;
7160   GdkModifierType state;
7161   GtkTreePath *path = NULL;
7162   GtkTreeViewColumn *column = NULL;
7163   GdkRectangle visible_rect;
7164
7165   GDK_THREADS_ENTER ();
7166
7167   tree_view = GTK_TREE_VIEW (data);
7168
7169   gdk_window_get_pointer (tree_view->priv->bin_window,
7170                           &x, &y, &state);
7171
7172   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7173
7174   /* See if we are near the edge. */
7175   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7176       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7177       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7178       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7179     {
7180       gtk_tree_view_get_path_at_pos (tree_view,
7181                                      tree_view->priv->bin_window,
7182                                      x, y,
7183                                      &path,
7184                                      &column,
7185                                      NULL,
7186                                      NULL);
7187
7188       if (path != NULL)
7189         {
7190           gtk_tree_view_scroll_to_cell (tree_view,
7191                                         path,
7192                                         column,
7193                                         TRUE,
7194                                         0.5, 0.5);
7195
7196           gtk_tree_path_free (path);
7197         }
7198     }
7199
7200   GDK_THREADS_LEAVE ();
7201
7202   return TRUE;
7203 }
7204 #endif /* 0 */
7205
7206 static void
7207 add_scroll_timeout (GtkTreeView *tree_view)
7208 {
7209   if (tree_view->priv->scroll_timeout == 0)
7210     {
7211       tree_view->priv->scroll_timeout =
7212         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7213     }
7214 }
7215
7216 static void
7217 remove_scroll_timeout (GtkTreeView *tree_view)
7218 {
7219   if (tree_view->priv->scroll_timeout != 0)
7220     {
7221       g_source_remove (tree_view->priv->scroll_timeout);
7222       tree_view->priv->scroll_timeout = 0;
7223     }
7224 }
7225
7226 static gboolean
7227 check_model_dnd (GtkTreeModel *model,
7228                  GType         required_iface,
7229                  const gchar  *signal)
7230 {
7231   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7232     {
7233       g_warning ("You must override the default '%s' handler "
7234                  "on GtkTreeView when using models that don't support "
7235                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7236                  "is to connect to '%s' and call "
7237                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7238                  "the default handler from running. Look at the source code "
7239                  "for the default handler in gtktreeview.c to get an idea what "
7240                  "your handler should do. (gtktreeview.c is in the GTK source "
7241                  "code.) If you're using GTK from a language other than C, "
7242                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7243                  signal, g_type_name (required_iface), signal);
7244       return FALSE;
7245     }
7246   else
7247     return TRUE;
7248 }
7249
7250 static void
7251 remove_open_timeout (GtkTreeView *tree_view)
7252 {
7253   if (tree_view->priv->open_dest_timeout != 0)
7254     {
7255       g_source_remove (tree_view->priv->open_dest_timeout);
7256       tree_view->priv->open_dest_timeout = 0;
7257     }
7258 }
7259
7260
7261 static gint
7262 open_row_timeout (gpointer data)
7263 {
7264   GtkTreeView *tree_view = data;
7265   GtkTreePath *dest_path = NULL;
7266   GtkTreeViewDropPosition pos;
7267   gboolean result = FALSE;
7268
7269   gtk_tree_view_get_drag_dest_row (tree_view,
7270                                    &dest_path,
7271                                    &pos);
7272
7273   if (dest_path &&
7274       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7275        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7276     {
7277       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7278       tree_view->priv->open_dest_timeout = 0;
7279
7280       gtk_tree_path_free (dest_path);
7281     }
7282   else
7283     {
7284       if (dest_path)
7285         gtk_tree_path_free (dest_path);
7286
7287       result = TRUE;
7288     }
7289
7290   return result;
7291 }
7292
7293 static gboolean
7294 scroll_row_timeout (gpointer data)
7295 {
7296   GtkTreeView *tree_view = data;
7297
7298   gtk_tree_view_vertical_autoscroll (tree_view);
7299
7300   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7301     gtk_tree_view_update_rubber_band (tree_view);
7302
7303   return TRUE;
7304 }
7305
7306 /* Returns TRUE if event should not be propagated to parent widgets */
7307 static gboolean
7308 set_destination_row (GtkTreeView    *tree_view,
7309                      GdkDragContext *context,
7310                      /* coordinates relative to the widget */
7311                      gint            x,
7312                      gint            y,
7313                      GdkDragAction  *suggested_action,
7314                      GdkAtom        *target)
7315 {
7316   GtkTreePath *path = NULL;
7317   GtkTreeViewDropPosition pos;
7318   GtkTreeViewDropPosition old_pos;
7319   TreeViewDragInfo *di;
7320   GtkWidget *widget;
7321   GtkTreePath *old_dest_path = NULL;
7322   gboolean can_drop = FALSE;
7323
7324   *suggested_action = 0;
7325   *target = GDK_NONE;
7326
7327   widget = GTK_WIDGET (tree_view);
7328
7329   di = get_info (tree_view);
7330
7331   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7332     {
7333       /* someone unset us as a drag dest, note that if
7334        * we return FALSE drag_leave isn't called
7335        */
7336
7337       gtk_tree_view_set_drag_dest_row (tree_view,
7338                                        NULL,
7339                                        GTK_TREE_VIEW_DROP_BEFORE);
7340
7341       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7342       remove_open_timeout (GTK_TREE_VIEW (widget));
7343
7344       return FALSE; /* no longer a drop site */
7345     }
7346
7347   *target = gtk_drag_dest_find_target (widget, context,
7348                                        gtk_drag_dest_get_target_list (widget));
7349   if (*target == GDK_NONE)
7350     {
7351       return FALSE;
7352     }
7353
7354   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7355                                           x, y,
7356                                           &path,
7357                                           &pos))
7358     {
7359       gint n_children;
7360       GtkTreeModel *model;
7361
7362       remove_open_timeout (tree_view);
7363
7364       /* the row got dropped on empty space, let's setup a special case
7365        */
7366
7367       if (path)
7368         gtk_tree_path_free (path);
7369
7370       model = gtk_tree_view_get_model (tree_view);
7371
7372       n_children = gtk_tree_model_iter_n_children (model, NULL);
7373       if (n_children)
7374         {
7375           pos = GTK_TREE_VIEW_DROP_AFTER;
7376           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7377         }
7378       else
7379         {
7380           pos = GTK_TREE_VIEW_DROP_BEFORE;
7381           path = gtk_tree_path_new_from_indices (0, -1);
7382         }
7383
7384       can_drop = TRUE;
7385
7386       goto out;
7387     }
7388
7389   g_assert (path);
7390
7391   /* If we left the current row's "open" zone, unset the timeout for
7392    * opening the row
7393    */
7394   gtk_tree_view_get_drag_dest_row (tree_view,
7395                                    &old_dest_path,
7396                                    &old_pos);
7397
7398   if (old_dest_path &&
7399       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7400        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7401          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7402     remove_open_timeout (tree_view);
7403
7404   if (old_dest_path)
7405     gtk_tree_path_free (old_dest_path);
7406
7407   if (TRUE /* FIXME if the location droppable predicate */)
7408     {
7409       can_drop = TRUE;
7410     }
7411
7412 out:
7413   if (can_drop)
7414     {
7415       GtkWidget *source_widget;
7416
7417       *suggested_action = gdk_drag_context_get_suggested_action (context);
7418       source_widget = gtk_drag_get_source_widget (context);
7419
7420       if (source_widget == widget)
7421         {
7422           /* Default to MOVE, unless the user has
7423            * pressed ctrl or shift to affect available actions
7424            */
7425           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7426             *suggested_action = GDK_ACTION_MOVE;
7427         }
7428
7429       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7430                                        path, pos);
7431     }
7432   else
7433     {
7434       /* can't drop here */
7435       remove_open_timeout (tree_view);
7436
7437       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7438                                        NULL,
7439                                        GTK_TREE_VIEW_DROP_BEFORE);
7440     }
7441
7442   if (path)
7443     gtk_tree_path_free (path);
7444
7445   return TRUE;
7446 }
7447
7448 static GtkTreePath*
7449 get_logical_dest_row (GtkTreeView *tree_view,
7450                       gboolean    *path_down_mode,
7451                       gboolean    *drop_append_mode)
7452 {
7453   /* adjust path to point to the row the drop goes in front of */
7454   GtkTreePath *path = NULL;
7455   GtkTreeViewDropPosition pos;
7456
7457   g_return_val_if_fail (path_down_mode != NULL, NULL);
7458   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7459
7460   *path_down_mode = FALSE;
7461   *drop_append_mode = 0;
7462
7463   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7464
7465   if (path == NULL)
7466     return NULL;
7467
7468   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7469     ; /* do nothing */
7470   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7471            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7472     *path_down_mode = TRUE;
7473   else
7474     {
7475       GtkTreeIter iter;
7476       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7477
7478       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7479
7480       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7481           !gtk_tree_model_iter_next (model, &iter))
7482         *drop_append_mode = 1;
7483       else
7484         {
7485           *drop_append_mode = 0;
7486           gtk_tree_path_next (path);
7487         }
7488     }
7489
7490   return path;
7491 }
7492
7493 static gboolean
7494 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7495                                         GdkEventMotion   *event)
7496 {
7497   GtkWidget *widget = GTK_WIDGET (tree_view);
7498   GdkDragContext *context;
7499   TreeViewDragInfo *di;
7500   GtkTreePath *path = NULL;
7501   gint button;
7502   gint cell_x, cell_y;
7503   GtkTreeModel *model;
7504   gboolean retval = FALSE;
7505
7506   di = get_info (tree_view);
7507
7508   if (di == NULL || !di->source_set)
7509     goto out;
7510
7511   if (tree_view->priv->pressed_button < 0)
7512     goto out;
7513
7514   if (!gtk_drag_check_threshold (widget,
7515                                  tree_view->priv->press_start_x,
7516                                  tree_view->priv->press_start_y,
7517                                  event->x, event->y))
7518     goto out;
7519
7520   model = gtk_tree_view_get_model (tree_view);
7521
7522   if (model == NULL)
7523     goto out;
7524
7525   button = tree_view->priv->pressed_button;
7526   tree_view->priv->pressed_button = -1;
7527
7528   gtk_tree_view_get_path_at_pos (tree_view,
7529                                  tree_view->priv->press_start_x,
7530                                  tree_view->priv->press_start_y,
7531                                  &path,
7532                                  NULL,
7533                                  &cell_x,
7534                                  &cell_y);
7535
7536   if (path == NULL)
7537     goto out;
7538
7539   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7540       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7541                                            path))
7542     goto out;
7543
7544   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7545     goto out;
7546
7547   /* Now we can begin the drag */
7548
7549   retval = TRUE;
7550
7551   context = gtk_drag_begin (widget,
7552                             gtk_drag_source_get_target_list (widget),
7553                             di->source_actions,
7554                             button,
7555                             (GdkEvent*)event);
7556
7557   set_source_row (context, model, path);
7558
7559  out:
7560   if (path)
7561     gtk_tree_path_free (path);
7562
7563   return retval;
7564 }
7565
7566
7567 static void
7568 gtk_tree_view_drag_begin (GtkWidget      *widget,
7569                           GdkDragContext *context)
7570 {
7571   GtkTreeView *tree_view;
7572   GtkTreePath *path = NULL;
7573   gint cell_x, cell_y;
7574   cairo_surface_t *row_pix;
7575   TreeViewDragInfo *di;
7576
7577   tree_view = GTK_TREE_VIEW (widget);
7578
7579   /* if the user uses a custom DND source impl, we don't set the icon here */
7580   di = get_info (tree_view);
7581
7582   if (di == NULL || !di->source_set)
7583     return;
7584
7585   gtk_tree_view_get_path_at_pos (tree_view,
7586                                  tree_view->priv->press_start_x,
7587                                  tree_view->priv->press_start_y,
7588                                  &path,
7589                                  NULL,
7590                                  &cell_x,
7591                                  &cell_y);
7592
7593   g_return_if_fail (path != NULL);
7594
7595   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7596                                                 path);
7597   cairo_surface_set_device_offset (row_pix,
7598                                    /* the + 1 is for the black border in the icon */
7599                                    - (tree_view->priv->press_start_x + 1),
7600                                    - (cell_y + 1));
7601
7602   gtk_drag_set_icon_surface (context, row_pix);
7603
7604   cairo_surface_destroy (row_pix);
7605   gtk_tree_path_free (path);
7606 }
7607
7608 static void
7609 gtk_tree_view_drag_end (GtkWidget      *widget,
7610                         GdkDragContext *context)
7611 {
7612   /* do nothing */
7613 }
7614
7615 /* Default signal implementations for the drag signals */
7616 static void
7617 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7618                              GdkDragContext   *context,
7619                              GtkSelectionData *selection_data,
7620                              guint             info,
7621                              guint             time)
7622 {
7623   GtkTreeView *tree_view;
7624   GtkTreeModel *model;
7625   TreeViewDragInfo *di;
7626   GtkTreePath *source_row;
7627
7628   tree_view = GTK_TREE_VIEW (widget);
7629
7630   model = gtk_tree_view_get_model (tree_view);
7631
7632   if (model == NULL)
7633     return;
7634
7635   di = get_info (GTK_TREE_VIEW (widget));
7636
7637   if (di == NULL)
7638     return;
7639
7640   source_row = get_source_row (context);
7641
7642   if (source_row == NULL)
7643     return;
7644
7645   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7646    * any model; for DragSource models there are some other targets
7647    * we also support.
7648    */
7649
7650   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7651       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7652                                           source_row,
7653                                           selection_data))
7654     goto done;
7655
7656   /* If drag_data_get does nothing, try providing row data. */
7657   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7658     {
7659       gtk_tree_set_row_drag_data (selection_data,
7660                                   model,
7661                                   source_row);
7662     }
7663
7664  done:
7665   gtk_tree_path_free (source_row);
7666 }
7667
7668
7669 static void
7670 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7671                                 GdkDragContext *context)
7672 {
7673   TreeViewDragInfo *di;
7674   GtkTreeModel *model;
7675   GtkTreeView *tree_view;
7676   GtkTreePath *source_row;
7677
7678   tree_view = GTK_TREE_VIEW (widget);
7679   model = gtk_tree_view_get_model (tree_view);
7680
7681   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7682     return;
7683
7684   di = get_info (tree_view);
7685
7686   if (di == NULL)
7687     return;
7688
7689   source_row = get_source_row (context);
7690
7691   if (source_row == NULL)
7692     return;
7693
7694   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7695                                          source_row);
7696
7697   gtk_tree_path_free (source_row);
7698
7699   set_source_row (context, NULL, NULL);
7700 }
7701
7702 static void
7703 gtk_tree_view_drag_leave (GtkWidget      *widget,
7704                           GdkDragContext *context,
7705                           guint             time)
7706 {
7707   /* unset any highlight row */
7708   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7709                                    NULL,
7710                                    GTK_TREE_VIEW_DROP_BEFORE);
7711
7712   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7713   remove_open_timeout (GTK_TREE_VIEW (widget));
7714 }
7715
7716
7717 static gboolean
7718 gtk_tree_view_drag_motion (GtkWidget        *widget,
7719                            GdkDragContext   *context,
7720                            /* coordinates relative to the widget */
7721                            gint              x,
7722                            gint              y,
7723                            guint             time)
7724 {
7725   gboolean empty;
7726   GtkTreePath *path = NULL;
7727   GtkTreeViewDropPosition pos;
7728   GtkTreeView *tree_view;
7729   GdkDragAction suggested_action = 0;
7730   GdkAtom target;
7731
7732   tree_view = GTK_TREE_VIEW (widget);
7733
7734   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7735     return FALSE;
7736
7737   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7738
7739   /* we only know this *after* set_desination_row */
7740   empty = tree_view->priv->empty_view_drop;
7741
7742   if (path == NULL && !empty)
7743     {
7744       /* Can't drop here. */
7745       gdk_drag_status (context, 0, time);
7746     }
7747   else
7748     {
7749       if (tree_view->priv->open_dest_timeout == 0 &&
7750           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7751            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7752         {
7753           tree_view->priv->open_dest_timeout =
7754             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7755         }
7756       else
7757         {
7758           add_scroll_timeout (tree_view);
7759         }
7760
7761       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7762         {
7763           /* Request data so we can use the source row when
7764            * determining whether to accept the drop
7765            */
7766           set_status_pending (context, suggested_action);
7767           gtk_drag_get_data (widget, context, target, time);
7768         }
7769       else
7770         {
7771           set_status_pending (context, 0);
7772           gdk_drag_status (context, suggested_action, time);
7773         }
7774     }
7775
7776   if (path)
7777     gtk_tree_path_free (path);
7778
7779   return TRUE;
7780 }
7781
7782
7783 static gboolean
7784 gtk_tree_view_drag_drop (GtkWidget        *widget,
7785                          GdkDragContext   *context,
7786                          /* coordinates relative to the widget */
7787                          gint              x,
7788                          gint              y,
7789                          guint             time)
7790 {
7791   GtkTreeView *tree_view;
7792   GtkTreePath *path;
7793   GdkDragAction suggested_action = 0;
7794   GdkAtom target = GDK_NONE;
7795   TreeViewDragInfo *di;
7796   GtkTreeModel *model;
7797   gboolean path_down_mode;
7798   gboolean drop_append_mode;
7799
7800   tree_view = GTK_TREE_VIEW (widget);
7801
7802   model = gtk_tree_view_get_model (tree_view);
7803
7804   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7805   remove_open_timeout (GTK_TREE_VIEW (widget));
7806
7807   di = get_info (tree_view);
7808
7809   if (di == NULL)
7810     return FALSE;
7811
7812   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7813     return FALSE;
7814
7815   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7816     return FALSE;
7817
7818   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7819
7820   if (target != GDK_NONE && path != NULL)
7821     {
7822       /* in case a motion had requested drag data, change things so we
7823        * treat drag data receives as a drop.
7824        */
7825       set_status_pending (context, 0);
7826       set_dest_row (context, model, path,
7827                     path_down_mode, tree_view->priv->empty_view_drop,
7828                     drop_append_mode);
7829     }
7830
7831   if (path)
7832     gtk_tree_path_free (path);
7833
7834   /* Unset this thing */
7835   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7836                                    NULL,
7837                                    GTK_TREE_VIEW_DROP_BEFORE);
7838
7839   if (target != GDK_NONE)
7840     {
7841       gtk_drag_get_data (widget, context, target, time);
7842       return TRUE;
7843     }
7844   else
7845     return FALSE;
7846 }
7847
7848 static void
7849 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7850                                   GdkDragContext   *context,
7851                                   /* coordinates relative to the widget */
7852                                   gint              x,
7853                                   gint              y,
7854                                   GtkSelectionData *selection_data,
7855                                   guint             info,
7856                                   guint             time)
7857 {
7858   GtkTreePath *path;
7859   TreeViewDragInfo *di;
7860   gboolean accepted = FALSE;
7861   GtkTreeModel *model;
7862   GtkTreeView *tree_view;
7863   GtkTreePath *dest_row;
7864   GdkDragAction suggested_action;
7865   gboolean path_down_mode;
7866   gboolean drop_append_mode;
7867
7868   tree_view = GTK_TREE_VIEW (widget);
7869
7870   model = gtk_tree_view_get_model (tree_view);
7871
7872   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7873     return;
7874
7875   di = get_info (tree_view);
7876
7877   if (di == NULL)
7878     return;
7879
7880   suggested_action = get_status_pending (context);
7881
7882   if (suggested_action)
7883     {
7884       /* We are getting this data due to a request in drag_motion,
7885        * rather than due to a request in drag_drop, so we are just
7886        * supposed to call drag_status, not actually paste in the
7887        * data.
7888        */
7889       path = get_logical_dest_row (tree_view, &path_down_mode,
7890                                    &drop_append_mode);
7891
7892       if (path == NULL)
7893         suggested_action = 0;
7894       else if (path_down_mode)
7895         gtk_tree_path_down (path);
7896
7897       if (suggested_action)
7898         {
7899           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7900                                                      path,
7901                                                      selection_data))
7902             {
7903               if (path_down_mode)
7904                 {
7905                   path_down_mode = FALSE;
7906                   gtk_tree_path_up (path);
7907
7908                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7909                                                              path,
7910                                                              selection_data))
7911                     suggested_action = 0;
7912                 }
7913               else
7914                 suggested_action = 0;
7915             }
7916         }
7917
7918       gdk_drag_status (context, suggested_action, time);
7919
7920       if (path)
7921         gtk_tree_path_free (path);
7922
7923       /* If you can't drop, remove user drop indicator until the next motion */
7924       if (suggested_action == 0)
7925         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7926                                          NULL,
7927                                          GTK_TREE_VIEW_DROP_BEFORE);
7928
7929       return;
7930     }
7931
7932   dest_row = get_dest_row (context, &path_down_mode);
7933
7934   if (dest_row == NULL)
7935     return;
7936
7937   if (gtk_selection_data_get_length (selection_data) >= 0)
7938     {
7939       if (path_down_mode)
7940         {
7941           gtk_tree_path_down (dest_row);
7942           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7943                                                      dest_row, selection_data))
7944             gtk_tree_path_up (dest_row);
7945         }
7946     }
7947
7948   if (gtk_selection_data_get_length (selection_data) >= 0)
7949     {
7950       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7951                                                  dest_row,
7952                                                  selection_data))
7953         accepted = TRUE;
7954     }
7955
7956   gtk_drag_finish (context,
7957                    accepted,
7958                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7959                    time);
7960
7961   if (gtk_tree_path_get_depth (dest_row) == 1
7962       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7963     {
7964       /* special special case drag to "0", scroll to first item */
7965       if (!tree_view->priv->scroll_to_path)
7966         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7967     }
7968
7969   gtk_tree_path_free (dest_row);
7970
7971   /* drop dest_row */
7972   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7973 }
7974
7975
7976
7977 /* GtkContainer Methods
7978  */
7979
7980
7981 static void
7982 gtk_tree_view_remove (GtkContainer *container,
7983                       GtkWidget    *widget)
7984 {
7985   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7986   GtkTreeViewChild *child = NULL;
7987   GList *tmp_list;
7988
7989   tmp_list = tree_view->priv->children;
7990   while (tmp_list)
7991     {
7992       child = tmp_list->data;
7993       if (child->widget == widget)
7994         {
7995           gtk_widget_unparent (widget);
7996
7997           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7998           g_list_free_1 (tmp_list);
7999           g_slice_free (GtkTreeViewChild, child);
8000           return;
8001         }
8002
8003       tmp_list = tmp_list->next;
8004     }
8005
8006   tmp_list = tree_view->priv->columns;
8007
8008   while (tmp_list)
8009     {
8010       GtkTreeViewColumn *column;
8011       GtkWidget         *button;
8012
8013       column = tmp_list->data;
8014       button = gtk_tree_view_column_get_button (column);
8015
8016       if (button == widget)
8017         {
8018           gtk_widget_unparent (widget);
8019           return;
8020         }
8021       tmp_list = tmp_list->next;
8022     }
8023 }
8024
8025 static void
8026 gtk_tree_view_forall (GtkContainer *container,
8027                       gboolean      include_internals,
8028                       GtkCallback   callback,
8029                       gpointer      callback_data)
8030 {
8031   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8032   GtkTreeViewChild *child = NULL;
8033   GtkTreeViewColumn *column;
8034   GtkWidget *button;
8035   GList *tmp_list;
8036
8037   tmp_list = tree_view->priv->children;
8038   while (tmp_list)
8039     {
8040       child = tmp_list->data;
8041       tmp_list = tmp_list->next;
8042
8043       (* callback) (child->widget, callback_data);
8044     }
8045   if (include_internals == FALSE)
8046     return;
8047
8048   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8049     {
8050       column = tmp_list->data;
8051       button = gtk_tree_view_column_get_button (column);
8052
8053       if (button)
8054         (* callback) (button, callback_data);
8055     }
8056 }
8057
8058 /* Returns TRUE is any of the columns contains a cell that can-focus.
8059  * If this is not the case, a column-spanning focus rectangle will be
8060  * drawn.
8061  */
8062 static gboolean
8063 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8064 {
8065   GList *list;
8066
8067   for (list = tree_view->priv->columns; list; list = list->next)
8068     {
8069       GtkTreeViewColumn *column = list->data;
8070
8071       if (!gtk_tree_view_column_get_visible (column))
8072         continue;
8073       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8074         return TRUE;
8075     }
8076
8077   return FALSE;
8078 }
8079
8080 static void
8081 column_sizing_notify (GObject    *object,
8082                       GParamSpec *pspec,
8083                       gpointer    data)
8084 {
8085   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8086
8087   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8088     /* disable fixed height mode */
8089     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8090 }
8091
8092 /**
8093  * gtk_tree_view_set_fixed_height_mode:
8094  * @tree_view: a #GtkTreeView
8095  * @enable: %TRUE to enable fixed height mode
8096  *
8097  * Enables or disables the fixed height mode of @tree_view.
8098  * Fixed height mode speeds up #GtkTreeView by assuming that all
8099  * rows have the same height.
8100  * Only enable this option if all rows are the same height and all
8101  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8102  *
8103  * Since: 2.6
8104  **/
8105 void
8106 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8107                                      gboolean     enable)
8108 {
8109   GList *l;
8110
8111   enable = enable != FALSE;
8112
8113   if (enable == tree_view->priv->fixed_height_mode)
8114     return;
8115
8116   if (!enable)
8117     {
8118       tree_view->priv->fixed_height_mode = 0;
8119       tree_view->priv->fixed_height = -1;
8120
8121       /* force a revalidation */
8122       install_presize_handler (tree_view);
8123     }
8124   else
8125     {
8126       /* make sure all columns are of type FIXED */
8127       for (l = tree_view->priv->columns; l; l = l->next)
8128         {
8129           GtkTreeViewColumn *c = l->data;
8130
8131           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8132         }
8133
8134       /* yes, we really have to do this is in a separate loop */
8135       for (l = tree_view->priv->columns; l; l = l->next)
8136         g_signal_connect (l->data, "notify::sizing",
8137                           G_CALLBACK (column_sizing_notify), tree_view);
8138
8139       tree_view->priv->fixed_height_mode = 1;
8140       tree_view->priv->fixed_height = -1;
8141
8142       if (tree_view->priv->tree)
8143         initialize_fixed_height_mode (tree_view);
8144     }
8145
8146   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8147 }
8148
8149 /**
8150  * gtk_tree_view_get_fixed_height_mode:
8151  * @tree_view: a #GtkTreeView
8152  *
8153  * Returns whether fixed height mode is turned on for @tree_view.
8154  *
8155  * Return value: %TRUE if @tree_view is in fixed height mode
8156  *
8157  * Since: 2.6
8158  **/
8159 gboolean
8160 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8161 {
8162   return tree_view->priv->fixed_height_mode;
8163 }
8164
8165 /* Returns TRUE if the focus is within the headers, after the focus operation is
8166  * done
8167  */
8168 static gboolean
8169 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8170                             GtkDirectionType  dir,
8171                             gboolean          clamp_column_visible)
8172 {
8173   GtkTreeViewColumn *column;
8174   GtkWidget *focus_child;
8175   GtkWidget *button;
8176   GList *last_column, *first_column;
8177   GList *tmp_list;
8178   gboolean rtl;
8179
8180   if (! tree_view->priv->headers_visible)
8181     return FALSE;
8182
8183   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8184
8185   first_column = tree_view->priv->columns;
8186   while (first_column)
8187     {
8188       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8189       button = gtk_tree_view_column_get_button (column);
8190
8191       if (gtk_widget_get_can_focus (button) &&
8192           gtk_tree_view_column_get_visible (column) &&
8193           (gtk_tree_view_column_get_clickable (column) ||
8194            gtk_tree_view_column_get_reorderable (column)))
8195         break;
8196       first_column = first_column->next;
8197     }
8198
8199   /* No headers are visible, or are focusable.  We can't focus in or out.
8200    */
8201   if (first_column == NULL)
8202     return FALSE;
8203
8204   last_column = g_list_last (tree_view->priv->columns);
8205   while (last_column)
8206     {
8207       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8208       button = gtk_tree_view_column_get_button (column);
8209
8210       if (gtk_widget_get_can_focus (button) &&
8211           gtk_tree_view_column_get_visible (column) &&
8212           (gtk_tree_view_column_get_clickable (column) ||
8213            gtk_tree_view_column_get_reorderable (column)))
8214         break;
8215       last_column = last_column->prev;
8216     }
8217
8218
8219   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8220
8221   switch (dir)
8222     {
8223     case GTK_DIR_TAB_BACKWARD:
8224     case GTK_DIR_TAB_FORWARD:
8225     case GTK_DIR_UP:
8226     case GTK_DIR_DOWN:
8227       if (focus_child == NULL)
8228         {
8229           if (tree_view->priv->focus_column != NULL)
8230             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8231           else
8232             button = NULL;
8233
8234           if (button && gtk_widget_get_can_focus (button))
8235             focus_child = button;
8236           else
8237             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8238
8239           gtk_widget_grab_focus (focus_child);
8240           break;
8241         }
8242       return FALSE;
8243
8244     case GTK_DIR_LEFT:
8245     case GTK_DIR_RIGHT:
8246       if (focus_child == NULL)
8247         {
8248           if (tree_view->priv->focus_column != NULL)
8249             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8250           else if (dir == GTK_DIR_LEFT)
8251             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8252           else
8253             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8254
8255           gtk_widget_grab_focus (focus_child);
8256           break;
8257         }
8258
8259       if (gtk_widget_child_focus (focus_child, dir))
8260         {
8261           /* The focus moves inside the button. */
8262           /* This is probably a great example of bad UI */
8263           break;
8264         }
8265
8266       /* We need to move the focus among the row of buttons. */
8267       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8268         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8269           break;
8270
8271       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8272           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8273         {
8274           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8275           break;
8276         }
8277
8278       while (tmp_list)
8279         {
8280           GtkTreeViewColumn *column;
8281           GtkWidget         *button;
8282
8283           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8284             tmp_list = tmp_list->next;
8285           else
8286             tmp_list = tmp_list->prev;
8287
8288           if (tmp_list == NULL)
8289             {
8290               g_warning ("Internal button not found");
8291               break;
8292             }
8293           column = tmp_list->data;
8294           button = gtk_tree_view_column_get_button (column);
8295           if (button &&
8296               gtk_tree_view_column_get_visible (column) &&
8297               gtk_widget_get_can_focus (button))
8298             {
8299               focus_child = button;
8300               gtk_widget_grab_focus (button);
8301               break;
8302             }
8303         }
8304       break;
8305     default:
8306       g_assert_not_reached ();
8307       break;
8308     }
8309
8310   /* if focus child is non-null, we assume it's been set to the current focus child
8311    */
8312   if (focus_child)
8313     {
8314       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8315         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8316           {
8317             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8318             break;
8319           }
8320
8321       if (clamp_column_visible)
8322         {
8323           gtk_tree_view_clamp_column_visible (tree_view,
8324                                               tree_view->priv->focus_column,
8325                                               FALSE);
8326         }
8327     }
8328
8329   return (focus_child != NULL);
8330 }
8331
8332 /* This function returns in 'path' the first focusable path, if the given path
8333  * is already focusable, it's the returned one.
8334  */
8335 static gboolean
8336 search_first_focusable_path (GtkTreeView  *tree_view,
8337                              GtkTreePath **path,
8338                              gboolean      search_forward,
8339                              GtkRBTree   **new_tree,
8340                              GtkRBNode   **new_node)
8341 {
8342   GtkRBTree *tree = NULL;
8343   GtkRBNode *node = NULL;
8344
8345   if (!path || !*path)
8346     return FALSE;
8347
8348   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8349
8350   if (!tree || !node)
8351     return FALSE;
8352
8353   while (node && row_is_separator (tree_view, NULL, *path))
8354     {
8355       if (search_forward)
8356         _gtk_rbtree_next_full (tree, node, &tree, &node);
8357       else
8358         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8359
8360       if (*path)
8361         gtk_tree_path_free (*path);
8362
8363       if (node)
8364         *path = _gtk_tree_view_find_path (tree_view, tree, node);
8365       else
8366         *path = NULL;
8367     }
8368
8369   if (new_tree)
8370     *new_tree = tree;
8371
8372   if (new_node)
8373     *new_node = node;
8374
8375   return (*path != NULL);
8376 }
8377
8378 static gint
8379 gtk_tree_view_focus (GtkWidget        *widget,
8380                      GtkDirectionType  direction)
8381 {
8382   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8383   GtkContainer *container = GTK_CONTAINER (widget);
8384   GtkWidget *focus_child;
8385
8386   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8387     return FALSE;
8388
8389   focus_child = gtk_container_get_focus_child (container);
8390
8391   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8392   /* Case 1.  Headers currently have focus. */
8393   if (focus_child)
8394     {
8395       switch (direction)
8396         {
8397         case GTK_DIR_LEFT:
8398         case GTK_DIR_RIGHT:
8399           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8400           return TRUE;
8401         case GTK_DIR_TAB_BACKWARD:
8402         case GTK_DIR_UP:
8403           return FALSE;
8404         case GTK_DIR_TAB_FORWARD:
8405         case GTK_DIR_DOWN:
8406           gtk_widget_grab_focus (widget);
8407           return TRUE;
8408         default:
8409           g_assert_not_reached ();
8410           return FALSE;
8411         }
8412     }
8413
8414   /* Case 2. We don't have focus at all. */
8415   if (!gtk_widget_has_focus (widget))
8416     {
8417       gtk_widget_grab_focus (widget);
8418       return TRUE;
8419     }
8420
8421   /* Case 3. We have focus already. */
8422   if (direction == GTK_DIR_TAB_BACKWARD)
8423     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8424   else if (direction == GTK_DIR_TAB_FORWARD)
8425     return FALSE;
8426
8427   /* Other directions caught by the keybindings */
8428   gtk_widget_grab_focus (widget);
8429   return TRUE;
8430 }
8431
8432 static void
8433 gtk_tree_view_grab_focus (GtkWidget *widget)
8434 {
8435   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8436
8437   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8438 }
8439
8440 static void
8441 gtk_tree_view_style_updated (GtkWidget *widget)
8442 {
8443   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8444   GList *list;
8445   GtkTreeViewColumn *column;
8446
8447   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8448
8449   if (gtk_widget_get_realized (widget))
8450     {
8451       GtkStyleContext *context;
8452
8453       context = gtk_widget_get_style_context (widget);
8454
8455       gtk_style_context_save (context);
8456       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
8457       gtk_style_context_set_background (context, tree_view->priv->bin_window);
8458       gtk_style_context_restore (context);
8459
8460       gtk_style_context_set_background (context, tree_view->priv->header_window);
8461
8462       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8463       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8464     }
8465
8466   gtk_widget_style_get (widget,
8467                         "expander-size", &tree_view->priv->expander_size,
8468                         NULL);
8469   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8470
8471   for (list = tree_view->priv->columns; list; list = list->next)
8472     {
8473       column = list->data;
8474       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8475     }
8476
8477   tree_view->priv->fixed_height = -1;
8478   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8479
8480   gtk_widget_queue_resize (widget);
8481 }
8482
8483
8484 static void
8485 gtk_tree_view_set_focus_child (GtkContainer *container,
8486                                GtkWidget    *child)
8487 {
8488   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8489   GList *list;
8490
8491   for (list = tree_view->priv->columns; list; list = list->next)
8492     {
8493       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8494         {
8495           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8496           break;
8497         }
8498     }
8499
8500   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8501 }
8502
8503 static GtkWidgetPath *
8504 gtk_tree_view_get_path_for_child (GtkContainer *container,
8505                                   GtkWidget    *child)
8506 {
8507   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8508   GtkWidgetPath *path;
8509   gboolean rtl;
8510   GList *list;
8511   gint n_col = 0;
8512
8513   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8514   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8515
8516   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8517        list;
8518        list = (rtl ? list->prev : list->next))
8519     {
8520       GtkTreeViewColumn *column = list->data;
8521       GtkRegionFlags flags = 0;
8522
8523       if (!gtk_tree_view_column_get_visible (column))
8524         continue;
8525
8526       n_col++;
8527
8528       if (gtk_tree_view_column_get_widget (column) != child &&
8529           gtk_tree_view_column_get_button (column) != child)
8530         continue;
8531
8532       if ((n_col % 2) == 0)
8533         flags |= GTK_REGION_EVEN;
8534       else
8535         flags |= GTK_REGION_ODD;
8536
8537       if (n_col == 1)
8538         flags |= GTK_REGION_FIRST;
8539
8540       if ((rtl && !list->prev) ||
8541           (!rtl && !list->next))
8542         flags |= GTK_REGION_LAST;
8543
8544       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8545       break;
8546     }
8547
8548   return path;
8549 }
8550
8551 static gboolean
8552 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8553                                 GtkMovementStep    step,
8554                                 gint               count)
8555 {
8556   GdkModifierType state;
8557
8558   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8559   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8560                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8561                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8562                         step == GTK_MOVEMENT_PAGES ||
8563                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8564
8565   if (tree_view->priv->tree == NULL)
8566     return FALSE;
8567   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8568     return FALSE;
8569
8570   gtk_tree_view_stop_editing (tree_view, FALSE);
8571   tree_view->priv->draw_keyfocus = TRUE;
8572   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8573
8574   if (gtk_get_current_event_state (&state))
8575     {
8576       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8577         tree_view->priv->ctrl_pressed = TRUE;
8578       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8579         tree_view->priv->shift_pressed = TRUE;
8580     }
8581   /* else we assume not pressed */
8582
8583   switch (step)
8584     {
8585       /* currently we make no distinction.  When we go bi-di, we need to */
8586     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8587     case GTK_MOVEMENT_VISUAL_POSITIONS:
8588       gtk_tree_view_move_cursor_left_right (tree_view, count);
8589       break;
8590     case GTK_MOVEMENT_DISPLAY_LINES:
8591       gtk_tree_view_move_cursor_up_down (tree_view, count);
8592       break;
8593     case GTK_MOVEMENT_PAGES:
8594       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8595       break;
8596     case GTK_MOVEMENT_BUFFER_ENDS:
8597       gtk_tree_view_move_cursor_start_end (tree_view, count);
8598       break;
8599     default:
8600       g_assert_not_reached ();
8601     }
8602
8603   tree_view->priv->ctrl_pressed = FALSE;
8604   tree_view->priv->shift_pressed = FALSE;
8605
8606   return TRUE;
8607 }
8608
8609 static void
8610 gtk_tree_view_put (GtkTreeView *tree_view,
8611                    GtkWidget   *child_widget,
8612                    /* in bin_window coordinates */
8613                    gint         x,
8614                    gint         y,
8615                    gint         width,
8616                    gint         height)
8617 {
8618   GtkTreeViewChild *child;
8619
8620   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8621   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8622
8623   child = g_slice_new (GtkTreeViewChild);
8624
8625   child->widget = child_widget;
8626   child->x = x;
8627   child->y = y;
8628   child->width = width;
8629   child->height = height;
8630
8631   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8632
8633   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8634     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8635
8636   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8637 }
8638
8639 void
8640 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8641                                   GtkWidget   *widget,
8642                                   /* in tree coordinates */
8643                                   gint         x,
8644                                   gint         y,
8645                                   gint         width,
8646                                   gint         height)
8647 {
8648   GtkTreeViewChild *child = NULL;
8649   GList *list;
8650   GdkRectangle allocation;
8651
8652   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8653   g_return_if_fail (GTK_IS_WIDGET (widget));
8654
8655   for (list = tree_view->priv->children; list; list = list->next)
8656     {
8657       if (((GtkTreeViewChild *)list->data)->widget == widget)
8658         {
8659           child = list->data;
8660           break;
8661         }
8662     }
8663   if (child == NULL)
8664     return;
8665
8666   allocation.x = child->x = x;
8667   allocation.y = child->y = y;
8668   allocation.width = child->width = width;
8669   allocation.height = child->height = height;
8670
8671   if (gtk_widget_get_realized (widget))
8672     gtk_widget_size_allocate (widget, &allocation);
8673 }
8674
8675
8676 /* TreeModel Callbacks
8677  */
8678
8679 static void
8680 gtk_tree_view_row_changed (GtkTreeModel *model,
8681                            GtkTreePath  *path,
8682                            GtkTreeIter  *iter,
8683                            gpointer      data)
8684 {
8685   GtkTreeView *tree_view = (GtkTreeView *)data;
8686   GtkRBTree *tree;
8687   GtkRBNode *node;
8688   gboolean free_path = FALSE;
8689   GList *list;
8690   GtkTreePath *cursor_path;
8691
8692   g_return_if_fail (path != NULL || iter != NULL);
8693
8694   if (tree_view->priv->cursor != NULL)
8695     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8696   else
8697     cursor_path = NULL;
8698
8699   if (tree_view->priv->edited_column &&
8700       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8701     gtk_tree_view_stop_editing (tree_view, TRUE);
8702
8703   if (cursor_path != NULL)
8704     gtk_tree_path_free (cursor_path);
8705
8706   if (path == NULL)
8707     {
8708       path = gtk_tree_model_get_path (model, iter);
8709       free_path = TRUE;
8710     }
8711   else if (iter == NULL)
8712     gtk_tree_model_get_iter (model, iter, path);
8713
8714   if (_gtk_tree_view_find_node (tree_view,
8715                                 path,
8716                                 &tree,
8717                                 &node))
8718     /* We aren't actually showing the node */
8719     goto done;
8720
8721   if (tree == NULL)
8722     goto done;
8723
8724   if (tree_view->priv->fixed_height_mode
8725       && tree_view->priv->fixed_height >= 0)
8726     {
8727       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8728       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8729         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8730     }
8731   else
8732     {
8733       _gtk_rbtree_node_mark_invalid (tree, node);
8734       for (list = tree_view->priv->columns; list; list = list->next)
8735         {
8736           GtkTreeViewColumn *column;
8737
8738           column = list->data;
8739           if (!gtk_tree_view_column_get_visible (column))
8740             continue;
8741
8742           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8743             {
8744               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8745             }
8746         }
8747     }
8748
8749  done:
8750   if (!tree_view->priv->fixed_height_mode &&
8751       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8752     install_presize_handler (tree_view);
8753   if (free_path)
8754     gtk_tree_path_free (path);
8755 }
8756
8757 static void
8758 gtk_tree_view_row_inserted (GtkTreeModel *model,
8759                             GtkTreePath  *path,
8760                             GtkTreeIter  *iter,
8761                             gpointer      data)
8762 {
8763   GtkTreeView *tree_view = (GtkTreeView *) data;
8764   gint *indices;
8765   GtkRBTree *tmptree, *tree;
8766   GtkRBNode *tmpnode = NULL;
8767   gint depth;
8768   gint i = 0;
8769   gint height;
8770   gboolean free_path = FALSE;
8771   gboolean node_visible = TRUE;
8772
8773   g_return_if_fail (path != NULL || iter != NULL);
8774
8775   if (tree_view->priv->fixed_height_mode
8776       && tree_view->priv->fixed_height >= 0)
8777     height = tree_view->priv->fixed_height;
8778   else
8779     height = 0;
8780
8781   if (path == NULL)
8782     {
8783       path = gtk_tree_model_get_path (model, iter);
8784       free_path = TRUE;
8785     }
8786   else if (iter == NULL)
8787     gtk_tree_model_get_iter (model, iter, path);
8788
8789   if (tree_view->priv->tree == NULL)
8790     tree_view->priv->tree = _gtk_rbtree_new ();
8791
8792   tmptree = tree = tree_view->priv->tree;
8793
8794   /* Update all row-references */
8795   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8796   depth = gtk_tree_path_get_depth (path);
8797   indices = gtk_tree_path_get_indices (path);
8798
8799   /* First, find the parent tree */
8800   while (i < depth - 1)
8801     {
8802       if (tmptree == NULL)
8803         {
8804           /* We aren't showing the node */
8805           node_visible = FALSE;
8806           goto done;
8807         }
8808
8809       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8810       if (tmpnode == NULL)
8811         {
8812           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8813                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8814                      "before the parent was inserted.");
8815           goto done;
8816         }
8817       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8818         {
8819           /* FIXME enforce correct behavior on model, probably */
8820           /* In theory, the model should have emitted has_child_toggled here.  We
8821            * try to catch it anyway, just to be safe, in case the model hasn't.
8822            */
8823           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8824                                                            tree,
8825                                                            tmpnode);
8826           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8827           gtk_tree_path_free (tmppath);
8828           goto done;
8829         }
8830
8831       tmptree = tmpnode->children;
8832       tree = tmptree;
8833       i++;
8834     }
8835
8836   if (tree == NULL)
8837     {
8838       node_visible = FALSE;
8839       goto done;
8840     }
8841
8842   /* ref the node */
8843   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8844   if (indices[depth - 1] == 0)
8845     {
8846       tmpnode = _gtk_rbtree_find_count (tree, 1);
8847       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8848     }
8849   else
8850     {
8851       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8852       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8853     }
8854
8855  done:
8856   if (height > 0)
8857     {
8858       if (tree)
8859         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8860
8861       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8862         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8863       else
8864         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8865     }
8866   else
8867     install_presize_handler (tree_view);
8868   if (free_path)
8869     gtk_tree_path_free (path);
8870 }
8871
8872 static void
8873 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8874                                      GtkTreePath  *path,
8875                                      GtkTreeIter  *iter,
8876                                      gpointer      data)
8877 {
8878   GtkTreeView *tree_view = (GtkTreeView *)data;
8879   GtkTreeIter real_iter;
8880   gboolean has_child;
8881   GtkRBTree *tree;
8882   GtkRBNode *node;
8883   gboolean free_path = FALSE;
8884
8885   g_return_if_fail (path != NULL || iter != NULL);
8886
8887   if (iter)
8888     real_iter = *iter;
8889
8890   if (path == NULL)
8891     {
8892       path = gtk_tree_model_get_path (model, iter);
8893       free_path = TRUE;
8894     }
8895   else if (iter == NULL)
8896     gtk_tree_model_get_iter (model, &real_iter, path);
8897
8898   if (_gtk_tree_view_find_node (tree_view,
8899                                 path,
8900                                 &tree,
8901                                 &node))
8902     /* We aren't actually showing the node */
8903     goto done;
8904
8905   if (tree == NULL)
8906     goto done;
8907
8908   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8909   /* Sanity check.
8910    */
8911   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8912     goto done;
8913
8914   if (has_child)
8915     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8916   else
8917     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8918
8919   if (has_child && tree_view->priv->is_list)
8920     {
8921       tree_view->priv->is_list = FALSE;
8922       if (tree_view->priv->show_expanders)
8923         {
8924           GList *list;
8925
8926           for (list = tree_view->priv->columns; list; list = list->next)
8927             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8928               {
8929                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8930                 break;
8931               }
8932         }
8933       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8934     }
8935   else
8936     {
8937       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8938     }
8939
8940  done:
8941   if (free_path)
8942     gtk_tree_path_free (path);
8943 }
8944
8945 static void
8946 count_children_helper (GtkRBTree *tree,
8947                        GtkRBNode *node,
8948                        gpointer   data)
8949 {
8950   if (node->children)
8951     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8952   (*((gint *)data))++;
8953 }
8954
8955 static void
8956 check_selection_helper (GtkRBTree *tree,
8957                         GtkRBNode *node,
8958                         gpointer   data)
8959 {
8960   gint *value = (gint *)data;
8961
8962   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8963
8964   if (node->children && !*value)
8965     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8966 }
8967
8968 static void
8969 gtk_tree_view_row_deleted (GtkTreeModel *model,
8970                            GtkTreePath  *path,
8971                            gpointer      data)
8972 {
8973   GtkTreeView *tree_view = (GtkTreeView *)data;
8974   GtkRBTree *tree;
8975   GtkRBNode *node;
8976   GList *list;
8977   gint selection_changed = FALSE;
8978   GtkStyleContext *context;
8979
8980   g_return_if_fail (path != NULL);
8981
8982   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8983
8984   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8985     return;
8986
8987   if (tree == NULL)
8988     return;
8989
8990   /* check if the selection has been changed */
8991   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8992                         check_selection_helper, &selection_changed);
8993
8994   for (list = tree_view->priv->columns; list; list = list->next)
8995     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
8996         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8997       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8998
8999   /* Ensure we don't have a dangling pointer to a dead node */
9000   ensure_unprelighted (tree_view);
9001
9002   /* Cancel editting if we've started */
9003   gtk_tree_view_stop_editing (tree_view, TRUE);
9004
9005   if (tree_view->priv->destroy_count_func)
9006     {
9007       gint child_count = 0;
9008       if (node->children)
9009         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9010       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9011     }
9012
9013   if (tree->root->count == 1)
9014     {
9015       if (tree_view->priv->tree == tree)
9016         tree_view->priv->tree = NULL;
9017
9018       _gtk_rbtree_remove (tree);
9019     }
9020   else
9021     {
9022       _gtk_rbtree_remove_node (tree, node);
9023     }
9024
9025   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9026     {
9027       gtk_tree_row_reference_free (tree_view->priv->top_row);
9028       tree_view->priv->top_row = NULL;
9029     }
9030
9031   /* Cancel any ongoing animation happening within the row */
9032   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9033   gtk_style_context_cancel_animations (context, node);
9034
9035   install_scroll_sync_handler (tree_view);
9036
9037   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9038
9039   if (selection_changed)
9040     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9041 }
9042
9043 static void
9044 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9045                               GtkTreePath  *parent,
9046                               GtkTreeIter  *iter,
9047                               gint         *new_order,
9048                               gpointer      data)
9049 {
9050   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9051   GtkRBTree *tree;
9052   GtkRBNode *node;
9053   gint len;
9054
9055   len = gtk_tree_model_iter_n_children (model, iter);
9056
9057   if (len < 2)
9058     return;
9059
9060   gtk_tree_row_reference_reordered (G_OBJECT (data),
9061                                     parent,
9062                                     iter,
9063                                     new_order);
9064
9065   if (_gtk_tree_view_find_node (tree_view,
9066                                 parent,
9067                                 &tree,
9068                                 &node))
9069     return;
9070
9071   /* We need to special case the parent path */
9072   if (tree == NULL)
9073     tree = tree_view->priv->tree;
9074   else
9075     tree = node->children;
9076
9077   if (tree == NULL)
9078     return;
9079
9080   if (tree_view->priv->edited_column)
9081     gtk_tree_view_stop_editing (tree_view, TRUE);
9082
9083   /* we need to be unprelighted */
9084   ensure_unprelighted (tree_view);
9085
9086   _gtk_rbtree_reorder (tree, new_order, len);
9087
9088   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9089
9090   gtk_tree_view_dy_to_top_row (tree_view);
9091 }
9092
9093
9094 /* Internal tree functions
9095  */
9096
9097
9098 static void
9099 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9100                                      GtkRBTree         *tree,
9101                                      GtkTreeViewColumn *column,
9102                                      gint              *x1,
9103                                      gint              *x2)
9104 {
9105   GtkTreeViewColumn *tmp_column = NULL;
9106   gint total_width;
9107   GList *list;
9108   gboolean rtl;
9109
9110   if (x1)
9111     *x1 = 0;
9112
9113   if (x2)
9114     *x2 = 0;
9115
9116   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9117
9118   total_width = 0;
9119   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9120        list;
9121        list = (rtl ? list->prev : list->next))
9122     {
9123       tmp_column = list->data;
9124
9125       if (tmp_column == column)
9126         break;
9127
9128       if (gtk_tree_view_column_get_visible (tmp_column))
9129         total_width += gtk_tree_view_column_get_width (tmp_column);
9130     }
9131
9132   if (tmp_column != column)
9133     {
9134       g_warning (G_STRLOC": passed-in column isn't in the tree");
9135       return;
9136     }
9137
9138   if (x1)
9139     *x1 = total_width;
9140
9141   if (x2)
9142     {
9143       if (gtk_tree_view_column_get_visible (column))
9144         *x2 = total_width + gtk_tree_view_column_get_width (column);
9145       else
9146         *x2 = total_width; /* width of 0 */
9147     }
9148 }
9149
9150 static void
9151 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9152                                 GtkRBTree   *tree,
9153                                 gint        *x1,
9154                                 gint        *x2)
9155 {
9156   gint x_offset = 0;
9157   GList *list;
9158   GtkTreeViewColumn *tmp_column = NULL;
9159   gint total_width;
9160   gboolean indent_expanders;
9161   gboolean rtl;
9162
9163   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9164
9165   total_width = 0;
9166   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9167        list;
9168        list = (rtl ? list->prev : list->next))
9169     {
9170       tmp_column = list->data;
9171
9172       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9173         {
9174           if (rtl)
9175             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9176           else
9177             x_offset = total_width;
9178           break;
9179         }
9180
9181       if (gtk_tree_view_column_get_visible (tmp_column))
9182         total_width += gtk_tree_view_column_get_width (tmp_column);
9183     }
9184
9185   gtk_widget_style_get (GTK_WIDGET (tree_view),
9186                         "indent-expanders", &indent_expanders,
9187                         NULL);
9188
9189   if (indent_expanders)
9190     {
9191       if (rtl)
9192         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9193       else
9194         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9195     }
9196
9197   *x1 = x_offset;
9198
9199   if (tmp_column &&
9200       gtk_tree_view_column_get_visible (tmp_column))
9201     /* +1 because x2 isn't included in the range. */
9202     *x2 = *x1 + tree_view->priv->expander_size + 1;
9203   else
9204     *x2 = *x1;
9205 }
9206
9207 static void
9208 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9209                           GtkRBTree   *tree,
9210                           GtkTreeIter *iter,
9211                           gint         depth,
9212                           gboolean     recurse)
9213 {
9214   GtkRBNode *temp = NULL;
9215   GtkTreePath *path = NULL;
9216
9217   do
9218     {
9219       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9220       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9221
9222       if (tree_view->priv->fixed_height > 0)
9223         {
9224           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9225             {
9226               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9227               _gtk_rbtree_node_mark_valid (tree, temp);
9228             }
9229         }
9230
9231       if (tree_view->priv->is_list)
9232         continue;
9233
9234       if (recurse)
9235         {
9236           GtkTreeIter child;
9237
9238           if (!path)
9239             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9240           else
9241             gtk_tree_path_next (path);
9242
9243           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9244             {
9245               gboolean expand;
9246
9247               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9248
9249               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9250                   && !expand)
9251                 {
9252                   temp->children = _gtk_rbtree_new ();
9253                   temp->children->parent_tree = tree;
9254                   temp->children->parent_node = temp;
9255                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9256                 }
9257             }
9258         }
9259
9260       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9261         {
9262           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9263             temp->flags ^= GTK_RBNODE_IS_PARENT;
9264         }
9265     }
9266   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9267
9268   if (path)
9269     gtk_tree_path_free (path);
9270 }
9271
9272 /* Make sure the node is visible vertically */
9273 static void
9274 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9275                                   GtkRBTree   *tree,
9276                                   GtkRBNode   *node)
9277 {
9278   gint node_dy, height;
9279   GtkTreePath *path = NULL;
9280
9281   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9282     return;
9283
9284   /* just return if the node is visible, avoiding a costly expose */
9285   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9286   height = gtk_tree_view_get_row_height (tree_view, node);
9287   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9288       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9289       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9290                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9291     return;
9292
9293   path = _gtk_tree_view_find_path (tree_view, tree, node);
9294   if (path)
9295     {
9296       /* We process updates because we want to clear old selected items when we scroll.
9297        * if this is removed, we get a "selection streak" at the bottom. */
9298       gtk_tree_view_bin_process_updates (tree_view);
9299
9300       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9301       gtk_tree_path_free (path);
9302     }
9303 }
9304
9305 static void
9306 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9307                                     GtkTreeViewColumn *column,
9308                                     gboolean           focus_to_cell)
9309 {
9310   GtkAllocation allocation;
9311   gint x, width;
9312
9313   if (column == NULL)
9314     return;
9315
9316   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9317   x = allocation.x;
9318   width = allocation.width;
9319
9320   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9321     {
9322       /* The column is larger than the horizontal page size.  If the
9323        * column has cells which can be focussed individually, then we make
9324        * sure the cell which gets focus is fully visible (if even the
9325        * focus cell is bigger than the page size, we make sure the
9326        * left-hand side of the cell is visible).
9327        *
9328        * If the column does not have an activatable cell, we
9329        * make sure the left-hand side of the column is visible.
9330        */
9331
9332       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9333         {
9334           GtkCellArea *cell_area;
9335           GtkCellRenderer *focus_cell;
9336
9337           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9338           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9339
9340           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9341                                                       &x, &width))
9342             {
9343               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9344                 {
9345                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9346                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9347                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9348                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9349                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9350                 }
9351             }
9352         }
9353
9354       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9355     }
9356   else
9357     {
9358       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9359           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9360                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9361       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9362         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9363   }
9364 }
9365
9366 /* This function could be more efficient.  I'll optimize it if profiling seems
9367  * to imply that it is important */
9368 GtkTreePath *
9369 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9370                           GtkRBTree   *tree,
9371                           GtkRBNode   *node)
9372 {
9373   GtkTreePath *path;
9374   GtkRBTree *tmp_tree;
9375   GtkRBNode *tmp_node, *last;
9376   gint count;
9377
9378   path = gtk_tree_path_new ();
9379
9380   g_return_val_if_fail (node != NULL, path);
9381   g_return_val_if_fail (node != tree->nil, path);
9382
9383   count = 1 + node->left->count;
9384
9385   last = node;
9386   tmp_node = node->parent;
9387   tmp_tree = tree;
9388   while (tmp_tree)
9389     {
9390       while (tmp_node != tmp_tree->nil)
9391         {
9392           if (tmp_node->right == last)
9393             count += 1 + tmp_node->left->count;
9394           last = tmp_node;
9395           tmp_node = tmp_node->parent;
9396         }
9397       gtk_tree_path_prepend_index (path, count - 1);
9398       last = tmp_tree->parent_node;
9399       tmp_tree = tmp_tree->parent_tree;
9400       if (last)
9401         {
9402           count = 1 + last->left->count;
9403           tmp_node = last->parent;
9404         }
9405     }
9406   return path;
9407 }
9408
9409 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9410  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9411  * both set to NULL.
9412  */
9413 gboolean
9414 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9415                           GtkTreePath  *path,
9416                           GtkRBTree   **tree,
9417                           GtkRBNode   **node)
9418 {
9419   GtkRBNode *tmpnode = NULL;
9420   GtkRBTree *tmptree = tree_view->priv->tree;
9421   gint *indices = gtk_tree_path_get_indices (path);
9422   gint depth = gtk_tree_path_get_depth (path);
9423   gint i = 0;
9424
9425   *node = NULL;
9426   *tree = NULL;
9427
9428   if (depth == 0 || tmptree == NULL)
9429     return FALSE;
9430   do
9431     {
9432       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9433       ++i;
9434       if (tmpnode == NULL)
9435         {
9436           *tree = NULL;
9437           *node = NULL;
9438           return FALSE;
9439         }
9440       if (i >= depth)
9441         {
9442           *tree = tmptree;
9443           *node = tmpnode;
9444           return FALSE;
9445         }
9446       *tree = tmptree;
9447       *node = tmpnode;
9448       tmptree = tmpnode->children;
9449       if (tmptree == NULL)
9450         return TRUE;
9451     }
9452   while (1);
9453 }
9454
9455 static gboolean
9456 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9457                                   GtkTreeViewColumn *column)
9458 {
9459   GList *list;
9460
9461   if (tree_view->priv->is_list)
9462     return FALSE;
9463
9464   if (tree_view->priv->expander_column != NULL)
9465     {
9466       if (tree_view->priv->expander_column == column)
9467         return TRUE;
9468       return FALSE;
9469     }
9470   else
9471     {
9472       for (list = tree_view->priv->columns;
9473            list;
9474            list = list->next)
9475         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9476           break;
9477       if (list && list->data == column)
9478         return TRUE;
9479     }
9480   return FALSE;
9481 }
9482
9483 static inline gboolean
9484 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9485 {
9486   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9487     return TRUE;
9488   /* else */
9489   return FALSE;
9490 }
9491
9492 static void
9493 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9494                                 guint           keyval,
9495                                 guint           modmask,
9496                                 gboolean        add_shifted_binding,
9497                                 GtkMovementStep step,
9498                                 gint            count)
9499 {
9500
9501   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9502                                 "move-cursor", 2,
9503                                 G_TYPE_ENUM, step,
9504                                 G_TYPE_INT, count);
9505
9506   if (add_shifted_binding)
9507     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9508                                   "move-cursor", 2,
9509                                   G_TYPE_ENUM, step,
9510                                   G_TYPE_INT, count);
9511
9512   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9513    return;
9514
9515   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9516                                 "move-cursor", 2,
9517                                 G_TYPE_ENUM, step,
9518                                 G_TYPE_INT, count);
9519
9520   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9521                                 "move-cursor", 2,
9522                                 G_TYPE_ENUM, step,
9523                                 G_TYPE_INT, count);
9524 }
9525
9526 static gint
9527 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9528                                  GtkTreeIter  *iter,
9529                                  GtkRBTree    *tree,
9530                                  GtkRBNode    *node)
9531 {
9532   gint retval = FALSE;
9533   do
9534     {
9535       g_return_val_if_fail (node != NULL, FALSE);
9536
9537       if (node->children)
9538         {
9539           GtkTreeIter child;
9540           GtkRBTree *new_tree;
9541           GtkRBNode *new_node;
9542
9543           new_tree = node->children;
9544           new_node = new_tree->root;
9545
9546           while (new_node && new_node->left != new_tree->nil)
9547             new_node = new_node->left;
9548
9549           if (!gtk_tree_model_iter_children (model, &child, iter))
9550             return FALSE;
9551
9552           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9553         }
9554
9555       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9556         retval = TRUE;
9557       gtk_tree_model_unref_node (model, iter);
9558       node = _gtk_rbtree_next (tree, node);
9559     }
9560   while (gtk_tree_model_iter_next (model, iter));
9561
9562   return retval;
9563 }
9564
9565 static gint
9566 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9567                                               GtkRBTree   *tree)
9568 {
9569   GtkTreeIter iter;
9570   GtkTreePath *path;
9571   GtkRBNode *node;
9572   gint retval;
9573
9574   if (!tree)
9575     return FALSE;
9576
9577   node = tree->root;
9578   while (node && node->left != tree->nil)
9579     node = node->left;
9580
9581   g_return_val_if_fail (node != NULL, FALSE);
9582   path = _gtk_tree_view_find_path (tree_view, tree, node);
9583   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9584                            &iter, path);
9585   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9586   gtk_tree_path_free (path);
9587
9588   return retval;
9589 }
9590
9591 static void
9592 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9593                                     GtkTreeViewColumn *column)
9594 {
9595   GtkTreeViewColumn *left_column;
9596   GtkTreeViewColumn *cur_column = NULL;
9597   GtkTreeViewColumnReorder *reorder;
9598   gboolean rtl;
9599   GList *tmp_list;
9600   gint left;
9601
9602   /* We want to precalculate the motion list such that we know what column slots
9603    * are available.
9604    */
9605   left_column = NULL;
9606   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9607
9608   /* First, identify all possible drop spots */
9609   if (rtl)
9610     tmp_list = g_list_last (tree_view->priv->columns);
9611   else
9612     tmp_list = g_list_first (tree_view->priv->columns);
9613
9614   while (tmp_list)
9615     {
9616       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9617       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9618
9619       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9620         continue;
9621
9622       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9623       if (left_column != column && cur_column != column &&
9624           tree_view->priv->column_drop_func &&
9625           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9626         {
9627           left_column = cur_column;
9628           continue;
9629         }
9630       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9631       reorder->left_column = left_column;
9632       left_column = reorder->right_column = cur_column;
9633
9634       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9635     }
9636
9637   /* Add the last one */
9638   if (tree_view->priv->column_drop_func == NULL ||
9639       ((left_column != column) &&
9640        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9641     {
9642       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9643       reorder->left_column = left_column;
9644       reorder->right_column = NULL;
9645       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9646     }
9647
9648   /* We quickly check to see if it even makes sense to reorder columns. */
9649   /* If there is nothing that can be moved, then we return */
9650
9651   if (tree_view->priv->column_drag_info == NULL)
9652     return;
9653
9654   /* We know there are always 2 slots possbile, as you can always return column. */
9655   /* If that's all there is, return */
9656   if (tree_view->priv->column_drag_info->next == NULL ||
9657       (tree_view->priv->column_drag_info->next->next == NULL &&
9658        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9659        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9660     {
9661       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9662         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9663       g_list_free (tree_view->priv->column_drag_info);
9664       tree_view->priv->column_drag_info = NULL;
9665       return;
9666     }
9667   /* We fill in the ranges for the columns, now that we've isolated them */
9668   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9669
9670   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9671     {
9672       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9673
9674       reorder->left_align = left;
9675       if (tmp_list->next != NULL)
9676         {
9677           GtkAllocation right_allocation, left_allocation;
9678           GtkWidget    *left_button, *right_button;
9679
9680           g_assert (tmp_list->next->data);
9681
9682           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9683           left_button  = gtk_tree_view_column_get_button
9684             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9685
9686           gtk_widget_get_allocation (right_button, &right_allocation);
9687           gtk_widget_get_allocation (left_button, &left_allocation);
9688           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9689         }
9690       else
9691         {
9692           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9693                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9694         }
9695     }
9696 }
9697
9698 void
9699 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9700                                   GtkTreeViewColumn *column,
9701                                   GdkDevice         *device)
9702 {
9703   GdkEvent *send_event;
9704   GtkAllocation allocation;
9705   GtkAllocation button_allocation;
9706   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9707   GtkWidget *button;
9708   GdkDevice *pointer, *keyboard;
9709
9710   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9711   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9712
9713   gtk_tree_view_set_column_drag_info (tree_view, column);
9714
9715   if (tree_view->priv->column_drag_info == NULL)
9716     return;
9717
9718   button = gtk_tree_view_column_get_button (column);
9719
9720   if (tree_view->priv->drag_window == NULL)
9721     {
9722       GdkWindowAttr attributes;
9723       guint attributes_mask;
9724
9725       gtk_widget_get_allocation (button, &button_allocation);
9726
9727       attributes.window_type = GDK_WINDOW_CHILD;
9728       attributes.wclass = GDK_INPUT_OUTPUT;
9729       attributes.x = button_allocation.x;
9730       attributes.y = 0;
9731       attributes.width = button_allocation.width;
9732       attributes.height = button_allocation.height;
9733       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9734       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9735       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9736
9737       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9738                                                      &attributes,
9739                                                      attributes_mask);
9740       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9741     }
9742
9743   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9744     {
9745       keyboard = device;
9746       pointer = gdk_device_get_associated_device (device);
9747     }
9748   else
9749     {
9750       pointer = device;
9751       keyboard = gdk_device_get_associated_device (device);
9752     }
9753
9754   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9755   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9756
9757   gtk_grab_remove (button);
9758
9759   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9760   send_event->crossing.send_event = TRUE;
9761   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9762   send_event->crossing.subwindow = NULL;
9763   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9764   send_event->crossing.time = GDK_CURRENT_TIME;
9765   gdk_event_set_device (send_event, device);
9766
9767   gtk_propagate_event (button, send_event);
9768   gdk_event_free (send_event);
9769
9770   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9771   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9772   send_event->button.send_event = TRUE;
9773   send_event->button.time = GDK_CURRENT_TIME;
9774   send_event->button.x = -1;
9775   send_event->button.y = -1;
9776   send_event->button.axes = NULL;
9777   send_event->button.state = 0;
9778   send_event->button.button = 1;
9779   send_event->button.x_root = 0;
9780   send_event->button.y_root = 0;
9781   gdk_event_set_device (send_event, device);
9782
9783   gtk_propagate_event (button, send_event);
9784   gdk_event_free (send_event);
9785
9786   /* Kids, don't try this at home */
9787   g_object_ref (button);
9788   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9789   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9790   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9791   g_object_unref (button);
9792
9793   gtk_widget_get_allocation (button, &button_allocation);
9794   tree_view->priv->drag_column_x = button_allocation.x;
9795   allocation = button_allocation;
9796   allocation.x = 0;
9797   gtk_widget_size_allocate (button, &allocation);
9798   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9799
9800   tree_view->priv->drag_column = column;
9801   gdk_window_show (tree_view->priv->drag_window);
9802
9803   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9804   while (gtk_events_pending ())
9805     gtk_main_iteration ();
9806
9807   tree_view->priv->in_column_drag = TRUE;
9808
9809   gdk_device_grab (pointer,
9810                    tree_view->priv->drag_window,
9811                    GDK_OWNERSHIP_NONE,
9812                    FALSE,
9813                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9814                    NULL,
9815                    GDK_CURRENT_TIME);
9816   gdk_device_grab (keyboard,
9817                    tree_view->priv->drag_window,
9818                    GDK_OWNERSHIP_NONE,
9819                    FALSE,
9820                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9821                    NULL,
9822                    GDK_CURRENT_TIME);
9823 }
9824
9825 static void
9826 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9827                                 GtkRBTree          *tree,
9828                                 GtkRBNode          *node)
9829 {
9830   GtkAllocation allocation;
9831   GdkRectangle rect;
9832
9833   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9834     return;
9835
9836   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9837   rect.x = 0;
9838   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9839
9840   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9841   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9842
9843   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9844 }
9845
9846 void
9847 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9848                                 GtkRBTree          *tree,
9849                                 GtkRBNode          *node,
9850                                 const GdkRectangle *clip_rect)
9851 {
9852   GtkAllocation allocation;
9853   GdkRectangle rect;
9854
9855   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9856     return;
9857
9858   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9859   rect.x = 0;
9860   rect.width = MAX (tree_view->priv->width, allocation.width);
9861
9862   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9863   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9864
9865   if (clip_rect)
9866     {
9867       GdkRectangle new_rect;
9868
9869       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9870
9871       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9872     }
9873   else
9874     {
9875       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9876     }
9877 }
9878
9879 static inline gint
9880 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9881 {
9882   if (tree_view->priv->headers_visible)
9883     return tree_view->priv->header_height;
9884   /* else */
9885   return 0;
9886 }
9887
9888 gint
9889 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9890 {
9891   return tree_view->priv->header_height;
9892 }
9893
9894 void
9895 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9896                                        GtkTreeViewRowSeparatorFunc *func,
9897                                        gpointer                    *data)
9898 {
9899   *func = tree_view->priv->row_separator_func;
9900   *data = tree_view->priv->row_separator_data;
9901 }
9902
9903 GtkTreePath *
9904 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9905 {
9906   if (tree_view->priv->anchor)
9907     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9908
9909   return NULL;
9910 }
9911
9912 void
9913 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9914                                 GtkTreePath *anchor_path)
9915 {
9916   if (tree_view->priv->anchor)
9917     {
9918       gtk_tree_row_reference_free (tree_view->priv->anchor);
9919       tree_view->priv->anchor = NULL;
9920     }
9921
9922   if (anchor_path && tree_view->priv->model)
9923     tree_view->priv->anchor =
9924       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9925                                         tree_view->priv->model, anchor_path);
9926 }
9927
9928 GtkRBTree *
9929 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9930 {
9931   return tree_view->priv->tree;
9932 }
9933
9934 GdkWindow *
9935 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
9936 {
9937   return tree_view->priv->header_window;
9938 }
9939
9940 void
9941 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
9942                                  GtkTreeViewColumn *column)
9943 {
9944   tree_view->priv->focus_column = column;
9945 }
9946
9947
9948 static void
9949 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9950                                GtkTreePath        *path,
9951                                const GdkRectangle *clip_rect)
9952 {
9953   GtkRBTree *tree = NULL;
9954   GtkRBNode *node = NULL;
9955
9956   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9957
9958   if (tree)
9959     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9960 }
9961
9962 /* x and y are the mouse position
9963  */
9964 static void
9965 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9966                           cairo_t     *cr,
9967                           GtkRBTree   *tree,
9968                           GtkRBNode   *node,
9969                           /* in bin_window coordinates */
9970                           gint         x,
9971                           gint         y)
9972 {
9973   GdkRectangle area;
9974   GtkStateFlags state = 0;
9975   GtkStyleContext *context;
9976   GtkWidget *widget;
9977   gint x_offset = 0;
9978   gint x2;
9979   gint vertical_separator;
9980   gint expander_size;
9981   GtkCellRendererState flags;
9982
9983   widget = GTK_WIDGET (tree_view);
9984   context = gtk_widget_get_style_context (widget);
9985
9986   gtk_widget_style_get (widget,
9987                         "vertical-separator", &vertical_separator,
9988                         NULL);
9989   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9990
9991   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9992     return;
9993
9994   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9995
9996   area.x = x_offset;
9997   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
9998                                                  vertical_separator);
9999   area.width = expander_size + 2;
10000   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10001                                                     vertical_separator);
10002
10003   if (!gtk_widget_get_sensitive (widget))
10004     state |= GTK_STATE_FLAG_INSENSITIVE;
10005   else
10006     {
10007       flags = 0;
10008
10009       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10010         flags |= GTK_CELL_RENDERER_SELECTED;
10011
10012       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10013
10014       if (node == tree_view->priv->button_pressed_node &&
10015           x >= area.x && x <= (area.x + area.width) &&
10016           y >= area.y && y <= (area.y + area.height))
10017         state |= GTK_STATE_FLAG_FOCUSED;
10018
10019       if (node == tree_view->priv->prelight_node &&
10020           tree_view->priv->arrow_prelit)
10021         state |= GTK_STATE_FLAG_PRELIGHT;
10022     }
10023
10024   if (node->children != NULL)
10025     state |= GTK_STATE_FLAG_ACTIVE;
10026
10027   gtk_style_context_save (context);
10028
10029   gtk_style_context_set_state (context, state);
10030   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10031
10032   gtk_style_context_push_animatable_region (context, node);
10033
10034   gtk_render_expander (context, cr,
10035                        area.x, area.y,
10036                        area.width, area.height);
10037
10038   gtk_style_context_pop_animatable_region (context);
10039   gtk_style_context_restore (context);
10040 }
10041
10042 static void
10043 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10044
10045 {
10046   GtkTreePath *cursor_path;
10047
10048   if ((tree_view->priv->tree == NULL) ||
10049       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10050     return;
10051
10052   cursor_path = NULL;
10053   if (tree_view->priv->cursor)
10054     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10055
10056   if (cursor_path == NULL)
10057     {
10058       /* Consult the selection before defaulting to the
10059        * first focusable element
10060        */
10061       GList *selected_rows;
10062       GtkTreeModel *model;
10063       GtkTreeSelection *selection;
10064
10065       selection = gtk_tree_view_get_selection (tree_view);
10066       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10067
10068       if (selected_rows)
10069         {
10070           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10071           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10072           g_list_free (selected_rows);
10073         }
10074       else
10075         {
10076           cursor_path = gtk_tree_path_new_first ();
10077           search_first_focusable_path (tree_view, &cursor_path,
10078                                        TRUE, NULL, NULL);
10079         }
10080
10081       gtk_tree_row_reference_free (tree_view->priv->cursor);
10082       tree_view->priv->cursor = NULL;
10083
10084       if (cursor_path)
10085         {
10086           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10087             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
10088           else
10089             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10090         }
10091     }
10092
10093   if (cursor_path)
10094     {
10095       tree_view->priv->draw_keyfocus = TRUE;
10096
10097       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10098       gtk_tree_path_free (cursor_path);
10099
10100       if (tree_view->priv->focus_column == NULL)
10101         {
10102           GList *list;
10103           for (list = tree_view->priv->columns; list; list = list->next)
10104             {
10105               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10106                 {
10107                   GtkCellArea *cell_area;
10108
10109                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10110
10111                   /* This happens when the treeview initially grabs focus and there
10112                    * is no column in focus, here we explicitly focus into the first cell */
10113                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10114                   if (!gtk_cell_area_get_focus_cell (cell_area))
10115                     {
10116                       gboolean rtl;
10117
10118                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10119                       gtk_cell_area_focus (cell_area,
10120                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10121                     }
10122
10123                   break;
10124                 }
10125             }
10126         }
10127     }
10128 }
10129
10130 static void
10131 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10132                                    gint         count)
10133 {
10134   gint selection_count;
10135   GtkRBTree *cursor_tree = NULL;
10136   GtkRBNode *cursor_node = NULL;
10137   GtkRBTree *new_cursor_tree = NULL;
10138   GtkRBNode *new_cursor_node = NULL;
10139   GtkTreePath *cursor_path = NULL;
10140   gboolean grab_focus = TRUE;
10141   gboolean selectable;
10142   GtkDirectionType direction;
10143   GtkCellArea *cell_area = NULL;
10144   GtkCellRenderer *last_focus_cell = NULL;
10145   GtkTreeIter iter;
10146
10147   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10148     return;
10149
10150   cursor_path = NULL;
10151   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
10152     /* FIXME: we lost the cursor; should we get the first? */
10153     return;
10154
10155   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10156   _gtk_tree_view_find_node (tree_view, cursor_path,
10157                             &cursor_tree, &cursor_node);
10158
10159   if (cursor_tree == NULL)
10160     /* FIXME: we lost the cursor; should we get the first? */
10161     return;
10162
10163   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10164
10165   if (tree_view->priv->focus_column)
10166     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10167
10168   /* If focus stays in the area for this row, then just return for this round */
10169   if (cell_area && (count == -1 || count == 1) &&
10170       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10171     {
10172       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10173                                                tree_view->priv->model,
10174                                                &iter,
10175                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10176                                                cursor_node->children?TRUE:FALSE);
10177
10178       /* Save the last cell that had focus, if we hit the end of the view we'll give
10179        * focus back to it. */
10180       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10181
10182       /* If focus stays in the area, no need to change the cursor row */
10183       if (gtk_cell_area_focus (cell_area, direction))
10184         return;
10185     }
10186
10187   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10188   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10189                                                       cursor_node,
10190                                                       cursor_path);
10191
10192   if (selection_count == 0
10193       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10194       && !tree_view->priv->ctrl_pressed
10195       && selectable)
10196     {
10197       /* Don't move the cursor, but just select the current node */
10198       new_cursor_tree = cursor_tree;
10199       new_cursor_node = cursor_node;
10200     }
10201   else
10202     {
10203       if (count == -1)
10204         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10205                                &new_cursor_tree, &new_cursor_node);
10206       else
10207         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10208                                &new_cursor_tree, &new_cursor_node);
10209     }
10210
10211   gtk_tree_path_free (cursor_path);
10212
10213   if (new_cursor_node)
10214     {
10215       cursor_path = _gtk_tree_view_find_path (tree_view,
10216                                               new_cursor_tree, new_cursor_node);
10217
10218       search_first_focusable_path (tree_view, &cursor_path,
10219                                    (count != -1),
10220                                    &new_cursor_tree,
10221                                    &new_cursor_node);
10222
10223       if (cursor_path)
10224         gtk_tree_path_free (cursor_path);
10225     }
10226
10227   /*
10228    * If the list has only one item and multi-selection is set then select
10229    * the row (if not yet selected).
10230    */
10231   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10232       new_cursor_node == NULL)
10233     {
10234       if (count == -1)
10235         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10236                                &new_cursor_tree, &new_cursor_node);
10237       else
10238         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10239                                &new_cursor_tree, &new_cursor_node);
10240
10241       if (new_cursor_node == NULL
10242           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
10243         {
10244           new_cursor_node = cursor_node;
10245           new_cursor_tree = cursor_tree;
10246         }
10247       else
10248         {
10249           new_cursor_node = NULL;
10250         }
10251     }
10252
10253   if (new_cursor_node)
10254     {
10255       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
10256       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10257       gtk_tree_path_free (cursor_path);
10258
10259       /* Give focus to the area in the new row */
10260       if (cell_area)
10261         gtk_cell_area_focus (cell_area, direction);
10262     }
10263   else
10264     {
10265       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10266
10267       if (!tree_view->priv->shift_pressed)
10268         {
10269           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10270                                           count < 0 ?
10271                                           GTK_DIR_UP : GTK_DIR_DOWN))
10272             {
10273               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10274
10275               if (toplevel)
10276                 gtk_widget_child_focus (toplevel,
10277                                         count < 0 ?
10278                                         GTK_DIR_TAB_BACKWARD :
10279                                         GTK_DIR_TAB_FORWARD);
10280
10281               grab_focus = FALSE;
10282             }
10283         }
10284       else
10285         {
10286           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10287         }
10288
10289       if (cell_area)
10290         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10291     }
10292
10293   if (grab_focus)
10294     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10295 }
10296
10297 static void
10298 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10299                                         gint         count)
10300 {
10301   GtkRBTree *cursor_tree = NULL;
10302   GtkRBNode *cursor_node = NULL;
10303   GtkTreePath *old_cursor_path = NULL;
10304   GtkTreePath *cursor_path = NULL;
10305   GtkRBTree *start_cursor_tree = NULL;
10306   GtkRBNode *start_cursor_node = NULL;
10307   gint y;
10308   gint window_y;
10309   gint vertical_separator;
10310
10311   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10312     return;
10313
10314   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10315     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10316   else
10317     /* This is sorta weird.  Focus in should give us a cursor */
10318     return;
10319
10320   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10321   _gtk_tree_view_find_node (tree_view, old_cursor_path,
10322                             &cursor_tree, &cursor_node);
10323
10324   if (cursor_tree == NULL)
10325     {
10326       /* FIXME: we lost the cursor.  Should we try to get one? */
10327       gtk_tree_path_free (old_cursor_path);
10328       return;
10329     }
10330   g_return_if_fail (cursor_node != NULL);
10331
10332   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10333   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10334   y += tree_view->priv->cursor_offset;
10335   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10336   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10337
10338   if (y >= tree_view->priv->height)
10339     y = tree_view->priv->height - 1;
10340
10341   tree_view->priv->cursor_offset =
10342     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10343                              &cursor_tree, &cursor_node);
10344
10345   if (cursor_tree == NULL)
10346     {
10347       /* FIXME: we lost the cursor.  Should we try to get one? */
10348       gtk_tree_path_free (old_cursor_path);
10349       return;
10350     }
10351
10352   if (tree_view->priv->cursor_offset
10353       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10354     {
10355       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10356                              &cursor_tree, &cursor_node);
10357       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10358     }
10359
10360   y -= tree_view->priv->cursor_offset;
10361   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10362
10363   start_cursor_tree = cursor_tree;
10364   start_cursor_node = cursor_node;
10365
10366   if (! search_first_focusable_path (tree_view, &cursor_path,
10367                                      (count != -1),
10368                                      &cursor_tree, &cursor_node))
10369     {
10370       /* It looks like we reached the end of the view without finding
10371        * a focusable row.  We will step backwards to find the last
10372        * focusable row.
10373        */
10374       cursor_tree = start_cursor_tree;
10375       cursor_node = start_cursor_node;
10376       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10377
10378       search_first_focusable_path (tree_view, &cursor_path,
10379                                    (count == -1),
10380                                    &cursor_tree, &cursor_node);
10381     }
10382
10383   if (!cursor_path)
10384     goto cleanup;
10385
10386   /* update y */
10387   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10388
10389   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10390
10391   y -= window_y;
10392   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10393   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10394   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10395
10396   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10397     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10398
10399   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10400
10401 cleanup:
10402   gtk_tree_path_free (old_cursor_path);
10403   gtk_tree_path_free (cursor_path);
10404 }
10405
10406 static void
10407 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10408                                       gint         count)
10409 {
10410   GtkRBTree *cursor_tree = NULL;
10411   GtkRBNode *cursor_node = NULL;
10412   GtkTreePath *cursor_path = NULL;
10413   GtkTreeViewColumn *column;
10414   GtkTreeIter iter;
10415   GList *list;
10416   gboolean found_column = FALSE;
10417   gboolean rtl;
10418   GtkDirectionType direction;
10419   GtkCellArea     *cell_area;
10420   GtkCellRenderer *last_focus_cell = NULL;
10421   GtkCellArea     *last_focus_area = NULL;
10422
10423   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10424
10425   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10426     return;
10427
10428   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10429     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10430   else
10431     return;
10432
10433   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
10434   if (cursor_tree == NULL)
10435     return;
10436   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10437     {
10438       gtk_tree_path_free (cursor_path);
10439       return;
10440     }
10441   gtk_tree_path_free (cursor_path);
10442
10443   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10444   if (tree_view->priv->focus_column)
10445     {
10446       /* Save the cell/area we are moving focus from, if moving the cursor
10447        * by one step hits the end we'll set focus back here */
10448       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10449       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10450
10451       for (; list; list = (rtl ? list->prev : list->next))
10452         {
10453           if (list->data == tree_view->priv->focus_column)
10454             break;
10455         }
10456     }
10457
10458   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10459
10460   while (list)
10461     {
10462       column = list->data;
10463       if (gtk_tree_view_column_get_visible (column) == FALSE)
10464         goto loop_end;
10465
10466       gtk_tree_view_column_cell_set_cell_data (column,
10467                                                tree_view->priv->model,
10468                                                &iter,
10469                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10470                                                cursor_node->children?TRUE:FALSE);
10471
10472       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10473       if (gtk_cell_area_focus (cell_area, direction))
10474         {
10475           tree_view->priv->focus_column = column;
10476           found_column = TRUE;
10477           break;
10478         }
10479
10480     loop_end:
10481       if (count == 1)
10482         list = rtl ? list->prev : list->next;
10483       else
10484         list = rtl ? list->next : list->prev;
10485     }
10486
10487   if (found_column)
10488     {
10489       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10490         _gtk_tree_view_queue_draw_node (tree_view,
10491                                         cursor_tree,
10492                                         cursor_node,
10493                                         NULL);
10494       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10495       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10496     }
10497   else
10498     {
10499       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10500
10501       if (last_focus_area)
10502         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10503     }
10504
10505   gtk_tree_view_clamp_column_visible (tree_view,
10506                                       tree_view->priv->focus_column, TRUE);
10507 }
10508
10509 static void
10510 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10511                                      gint         count)
10512 {
10513   GtkRBTree *cursor_tree;
10514   GtkRBNode *cursor_node;
10515   GtkTreePath *path;
10516   GtkTreePath *old_path;
10517
10518   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10519     return;
10520
10521   g_return_if_fail (tree_view->priv->tree != NULL);
10522
10523   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10524
10525   cursor_tree = tree_view->priv->tree;
10526   cursor_node = cursor_tree->root;
10527
10528   if (count == -1)
10529     {
10530       while (cursor_node && cursor_node->left != cursor_tree->nil)
10531         cursor_node = cursor_node->left;
10532
10533       /* Now go forward to find the first focusable row. */
10534       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10535       search_first_focusable_path (tree_view, &path,
10536                                    TRUE, &cursor_tree, &cursor_node);
10537     }
10538   else
10539     {
10540       do
10541         {
10542           while (cursor_node && cursor_node->right != cursor_tree->nil)
10543             cursor_node = cursor_node->right;
10544           if (cursor_node->children == NULL)
10545             break;
10546
10547           cursor_tree = cursor_node->children;
10548           cursor_node = cursor_tree->root;
10549         }
10550       while (1);
10551
10552       /* Now go backwards to find last focusable row. */
10553       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10554       search_first_focusable_path (tree_view, &path,
10555                                    FALSE, &cursor_tree, &cursor_node);
10556     }
10557
10558   if (!path)
10559     goto cleanup;
10560
10561   if (gtk_tree_path_compare (old_path, path))
10562     {
10563       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10564       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10565     }
10566   else
10567     {
10568       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10569     }
10570
10571 cleanup:
10572   gtk_tree_path_free (old_path);
10573   gtk_tree_path_free (path);
10574 }
10575
10576 static gboolean
10577 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10578 {
10579   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10580     return FALSE;
10581
10582   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10583     return FALSE;
10584
10585   gtk_tree_selection_select_all (tree_view->priv->selection);
10586
10587   return TRUE;
10588 }
10589
10590 static gboolean
10591 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10592 {
10593   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10594     return FALSE;
10595
10596   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10597     return FALSE;
10598
10599   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10600
10601   return TRUE;
10602 }
10603
10604 static gboolean
10605 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10606                                       gboolean     start_editing)
10607 {
10608   GtkRBTree *new_tree = NULL;
10609   GtkRBNode *new_node = NULL;
10610   GtkRBTree *cursor_tree = NULL;
10611   GtkRBNode *cursor_node = NULL;
10612   GtkTreePath *cursor_path = NULL;
10613   GtkTreeSelectMode mode = 0;
10614
10615   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10616     return FALSE;
10617
10618   if (tree_view->priv->cursor)
10619     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10620
10621   if (cursor_path == NULL)
10622     return FALSE;
10623
10624   _gtk_tree_view_find_node (tree_view, cursor_path,
10625                             &cursor_tree, &cursor_node);
10626
10627   if (cursor_tree == NULL)
10628     {
10629       gtk_tree_path_free (cursor_path);
10630       return FALSE;
10631     }
10632
10633   if (!tree_view->priv->shift_pressed && start_editing &&
10634       tree_view->priv->focus_column)
10635     {
10636       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10637         {
10638           gtk_tree_path_free (cursor_path);
10639           return TRUE;
10640         }
10641     }
10642
10643   if (tree_view->priv->ctrl_pressed)
10644     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10645   if (tree_view->priv->shift_pressed)
10646     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10647
10648   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10649                                             cursor_node,
10650                                             cursor_tree,
10651                                             cursor_path,
10652                                             mode,
10653                                             FALSE);
10654
10655   /* We bail out if the original (tree, node) don't exist anymore after
10656    * handling the selection-changed callback.  We do return TRUE because
10657    * the key press has been handled at this point.
10658    */
10659   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10660
10661   if (cursor_tree != new_tree || cursor_node != new_node)
10662     return FALSE;
10663
10664   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10665
10666   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10667   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10668
10669   if (!tree_view->priv->shift_pressed)
10670     gtk_tree_view_row_activated (tree_view, cursor_path,
10671                                  tree_view->priv->focus_column);
10672
10673   gtk_tree_path_free (cursor_path);
10674
10675   return TRUE;
10676 }
10677
10678 static gboolean
10679 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10680 {
10681   GtkRBTree *new_tree = NULL;
10682   GtkRBNode *new_node = NULL;
10683   GtkRBTree *cursor_tree = NULL;
10684   GtkRBNode *cursor_node = NULL;
10685   GtkTreePath *cursor_path = NULL;
10686
10687   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10688     return FALSE;
10689
10690   cursor_path = NULL;
10691   if (tree_view->priv->cursor)
10692     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10693
10694   if (cursor_path == NULL)
10695     return FALSE;
10696
10697   _gtk_tree_view_find_node (tree_view, cursor_path,
10698                             &cursor_tree, &cursor_node);
10699   if (cursor_tree == NULL)
10700     {
10701       gtk_tree_path_free (cursor_path);
10702       return FALSE;
10703     }
10704
10705   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10706                                             cursor_node,
10707                                             cursor_tree,
10708                                             cursor_path,
10709                                             GTK_TREE_SELECT_MODE_TOGGLE,
10710                                             FALSE);
10711
10712   /* We bail out if the original (tree, node) don't exist anymore after
10713    * handling the selection-changed callback.  We do return TRUE because
10714    * the key press has been handled at this point.
10715    */
10716   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10717
10718   if (cursor_tree != new_tree || cursor_node != new_node)
10719     return FALSE;
10720
10721   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10722
10723   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10724   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10725   gtk_tree_path_free (cursor_path);
10726
10727   return TRUE;
10728 }
10729
10730 static gboolean
10731 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10732                                                gboolean     logical,
10733                                                gboolean     expand,
10734                                                gboolean     open_all)
10735 {
10736   GtkTreePath *cursor_path = NULL;
10737   GtkRBTree *tree;
10738   GtkRBNode *node;
10739
10740   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10741     return FALSE;
10742
10743   cursor_path = NULL;
10744   if (tree_view->priv->cursor)
10745     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10746
10747   if (cursor_path == NULL)
10748     return FALSE;
10749
10750   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10751     return FALSE;
10752
10753   /* Don't handle the event if we aren't an expander */
10754   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10755     return FALSE;
10756
10757   if (!logical
10758       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10759     expand = !expand;
10760
10761   if (expand)
10762     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10763   else
10764     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10765
10766   gtk_tree_path_free (cursor_path);
10767
10768   return TRUE;
10769 }
10770
10771 static gboolean
10772 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10773 {
10774   GtkRBTree *cursor_tree = NULL;
10775   GtkRBNode *cursor_node = NULL;
10776   GtkTreePath *cursor_path = NULL;
10777   GdkModifierType state;
10778
10779   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10780     goto out;
10781
10782   cursor_path = NULL;
10783   if (tree_view->priv->cursor)
10784     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10785
10786   if (cursor_path == NULL)
10787     goto out;
10788
10789   _gtk_tree_view_find_node (tree_view, cursor_path,
10790                             &cursor_tree, &cursor_node);
10791   if (cursor_tree == NULL)
10792     {
10793       gtk_tree_path_free (cursor_path);
10794       goto out;
10795     }
10796
10797   if (cursor_tree->parent_node)
10798     {
10799       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10800       cursor_node = cursor_tree->parent_node;
10801       cursor_tree = cursor_tree->parent_tree;
10802
10803       gtk_tree_path_up (cursor_path);
10804
10805       if (gtk_get_current_event_state (&state))
10806         {
10807           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10808             tree_view->priv->ctrl_pressed = TRUE;
10809         }
10810
10811       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10812       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10813
10814       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10815       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10816       gtk_tree_path_free (cursor_path);
10817
10818       tree_view->priv->ctrl_pressed = FALSE;
10819
10820       return TRUE;
10821     }
10822
10823  out:
10824
10825   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10826   return FALSE;
10827 }
10828
10829 static gboolean
10830 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10831 {
10832   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10833   tree_view->priv->typeselect_flush_timeout = 0;
10834
10835   return FALSE;
10836 }
10837
10838 /* Cut and paste from gtkwindow.c */
10839 static void
10840 send_focus_change (GtkWidget *widget,
10841                    GdkDevice *device,
10842                    gboolean   in)
10843 {
10844   GdkDeviceManager *device_manager;
10845   GList *devices, *d;
10846
10847   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10848   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10849   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10850   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10851
10852   for (d = devices; d; d = d->next)
10853     {
10854       GdkDevice *dev = d->data;
10855       GdkEvent *fevent;
10856       GdkWindow *window;
10857
10858       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10859         continue;
10860
10861       window = gtk_widget_get_window (widget);
10862
10863       /* Skip non-master keyboards that haven't
10864        * selected for events from this window
10865        */
10866       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10867           !gdk_window_get_device_events (window, dev))
10868         continue;
10869
10870       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10871
10872       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10873       fevent->focus_change.window = g_object_ref (window);
10874       fevent->focus_change.in = in;
10875       gdk_event_set_device (fevent, device);
10876
10877       gtk_widget_send_focus_change (widget, fevent);
10878
10879       gdk_event_free (fevent);
10880     }
10881
10882   g_list_free (devices);
10883 }
10884
10885 static void
10886 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10887 {
10888   GtkWidget *frame, *vbox, *toplevel;
10889   GdkScreen *screen;
10890
10891   if (tree_view->priv->search_custom_entry_set)
10892     return;
10893
10894   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10895   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10896
10897    if (tree_view->priv->search_window != NULL)
10898      {
10899        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10900          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10901                                       GTK_WINDOW (tree_view->priv->search_window));
10902        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10903          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10904                                          GTK_WINDOW (tree_view->priv->search_window));
10905
10906        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10907
10908        return;
10909      }
10910
10911   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10912   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10913
10914   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10915     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10916                                  GTK_WINDOW (tree_view->priv->search_window));
10917
10918   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10919                             GDK_WINDOW_TYPE_HINT_UTILITY);
10920   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10921   g_signal_connect (tree_view->priv->search_window, "delete-event",
10922                     G_CALLBACK (gtk_tree_view_search_delete_event),
10923                     tree_view);
10924   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10925                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10926                     tree_view);
10927   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10928                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10929                     tree_view);
10930   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10931                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10932                     tree_view);
10933
10934   frame = gtk_frame_new (NULL);
10935   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10936   gtk_widget_show (frame);
10937   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10938
10939   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10940   gtk_widget_show (vbox);
10941   gtk_container_add (GTK_CONTAINER (frame), vbox);
10942   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10943
10944   /* add entry */
10945   tree_view->priv->search_entry = gtk_entry_new ();
10946   gtk_widget_show (tree_view->priv->search_entry);
10947   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10948                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10949                     tree_view);
10950   g_signal_connect (tree_view->priv->search_entry,
10951                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10952                     tree_view);
10953
10954   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10955                     "preedit-changed",
10956                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10957                     tree_view);
10958
10959   gtk_container_add (GTK_CONTAINER (vbox),
10960                      tree_view->priv->search_entry);
10961
10962   gtk_widget_realize (tree_view->priv->search_entry);
10963 }
10964
10965 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10966  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10967  */
10968 static gboolean
10969 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10970                                              GdkDevice   *device,
10971                                              gboolean     keybinding)
10972 {
10973   /* We only start interactive search if we have focus or the columns
10974    * have focus.  If one of our children have focus, we don't want to
10975    * start the search.
10976    */
10977   GList *list;
10978   gboolean found_focus = FALSE;
10979   GtkWidgetClass *entry_parent_class;
10980
10981   if (!tree_view->priv->enable_search && !keybinding)
10982     return FALSE;
10983
10984   if (tree_view->priv->search_custom_entry_set)
10985     return FALSE;
10986
10987   if (tree_view->priv->search_window != NULL &&
10988       gtk_widget_get_visible (tree_view->priv->search_window))
10989     return TRUE;
10990
10991   for (list = tree_view->priv->columns; list; list = list->next)
10992     {
10993       GtkTreeViewColumn *column;
10994       GtkWidget         *button;
10995
10996       column = list->data;
10997       if (!gtk_tree_view_column_get_visible (column))
10998         continue;
10999
11000       button = gtk_tree_view_column_get_button (column);
11001       if (gtk_widget_has_focus (button))
11002         {
11003           found_focus = TRUE;
11004           break;
11005         }
11006     }
11007
11008   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11009     found_focus = TRUE;
11010
11011   if (!found_focus)
11012     return FALSE;
11013
11014   if (tree_view->priv->search_column < 0)
11015     return FALSE;
11016
11017   gtk_tree_view_ensure_interactive_directory (tree_view);
11018
11019   if (keybinding)
11020     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11021
11022   /* done, show it */
11023   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11024   gtk_widget_show (tree_view->priv->search_window);
11025   if (tree_view->priv->search_entry_changed_id == 0)
11026     {
11027       tree_view->priv->search_entry_changed_id =
11028         g_signal_connect (tree_view->priv->search_entry, "changed",
11029                           G_CALLBACK (gtk_tree_view_search_init),
11030                           tree_view);
11031     }
11032
11033   tree_view->priv->typeselect_flush_timeout =
11034     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11035                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11036                    tree_view);
11037
11038   /* Grab focus will select all the text.  We don't want that to happen, so we
11039    * call the parent instance and bypass the selection change.  This is probably
11040    * really non-kosher. */
11041   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11042   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11043
11044   /* send focus-in event */
11045   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11046
11047   /* search first matching iter */
11048   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11049
11050   return TRUE;
11051 }
11052
11053 static gboolean
11054 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11055 {
11056   return gtk_tree_view_real_start_interactive_search (tree_view,
11057                                                       gtk_get_current_event_device (),
11058                                                       TRUE);
11059 }
11060
11061 /* this function returns the new width of the column being resized given
11062  * the column and x position of the cursor; the x cursor position is passed
11063  * in as a pointer and automagicly corrected if it's beyond min/max limits
11064  */
11065 static gint
11066 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11067                                 gint       i,
11068                                 gint      *x)
11069 {
11070   GtkAllocation allocation;
11071   GtkTreeViewColumn *column;
11072   GtkRequisition button_req;
11073   gint max_width, min_width;
11074   gint width;
11075   gboolean rtl;
11076
11077   /* first translate the x position from widget->window
11078    * to clist->clist_window
11079    */
11080   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11081   column = g_list_nth (tree_view->priv->columns, i)->data;
11082   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11083   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11084
11085   /* Clamp down the value */
11086   min_width = gtk_tree_view_column_get_min_width (column);
11087   if (min_width == -1)
11088     {
11089       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11090       width = MAX (button_req.width, width);
11091     }
11092   else
11093     width = MAX (min_width, width);
11094
11095   max_width = gtk_tree_view_column_get_max_width (column);
11096   if (max_width != -1)
11097     width = MIN (width, max_width);
11098
11099   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11100
11101   return width;
11102 }
11103
11104
11105 /* FIXME this adjust_allocation is a big cut-and-paste from
11106  * GtkCList, needs to be some "official" way to do this
11107  * factored out.
11108  */
11109 typedef struct
11110 {
11111   GdkWindow *window;
11112   int dx;
11113   int dy;
11114 } ScrollData;
11115
11116 /* The window to which widget->window is relative */
11117 #define ALLOCATION_WINDOW(widget)               \
11118    (!gtk_widget_get_has_window (widget) ?                   \
11119     gtk_widget_get_window (widget) :                        \
11120     gdk_window_get_parent (gtk_widget_get_window (widget)))
11121
11122 static void
11123 adjust_allocation_recurse (GtkWidget *widget,
11124                            gpointer   data)
11125 {
11126   GtkAllocation allocation;
11127   ScrollData *scroll_data = data;
11128
11129   /* Need to really size allocate instead of just poking
11130    * into widget->allocation if the widget is not realized.
11131    * FIXME someone figure out why this was.
11132    */
11133   gtk_widget_get_allocation (widget, &allocation);
11134   if (!gtk_widget_get_realized (widget))
11135     {
11136       if (gtk_widget_get_visible (widget))
11137         {
11138           GdkRectangle tmp_rectangle = allocation;
11139           tmp_rectangle.x += scroll_data->dx;
11140           tmp_rectangle.y += scroll_data->dy;
11141
11142           gtk_widget_size_allocate (widget, &tmp_rectangle);
11143         }
11144     }
11145   else
11146     {
11147       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11148         {
11149           allocation.x += scroll_data->dx;
11150           allocation.y += scroll_data->dy;
11151           gtk_widget_set_allocation (widget, &allocation);
11152
11153           if (GTK_IS_CONTAINER (widget))
11154             gtk_container_forall (GTK_CONTAINER (widget),
11155                                   adjust_allocation_recurse,
11156                                   data);
11157         }
11158     }
11159 }
11160
11161 static void
11162 adjust_allocation (GtkWidget *widget,
11163                    int        dx,
11164                    int        dy)
11165 {
11166   ScrollData scroll_data;
11167
11168   if (gtk_widget_get_realized (widget))
11169     scroll_data.window = ALLOCATION_WINDOW (widget);
11170   else
11171     scroll_data.window = NULL;
11172
11173   scroll_data.dx = dx;
11174   scroll_data.dy = dy;
11175
11176   adjust_allocation_recurse (widget, &scroll_data);
11177 }
11178
11179 /* Callbacks */
11180 static void
11181 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11182                                   GtkTreeView   *tree_view)
11183 {
11184   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11185     {
11186       GtkStyleContext *context;
11187       gint dy;
11188
11189       gdk_window_move (tree_view->priv->bin_window,
11190                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11191                        gtk_tree_view_get_effective_header_height (tree_view));
11192       gdk_window_move (tree_view->priv->header_window,
11193                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11194                        0);
11195       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11196       if (dy)
11197         {
11198           update_prelight (tree_view,
11199                            tree_view->priv->event_last_x,
11200                            tree_view->priv->event_last_y - dy);
11201
11202           if (tree_view->priv->edited_column)
11203             {
11204               GList *list;
11205               GtkTreeViewChild *child = NULL;
11206               GtkCellEditable *edit_widget;
11207               GtkCellArea *area;
11208
11209               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11210               edit_widget = gtk_cell_area_get_edit_widget (area);
11211               if (GTK_IS_WIDGET (edit_widget))
11212                 {
11213                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11214
11215                   for (list = tree_view->priv->children; list; list = list->next)
11216                     {
11217                       child = (GtkTreeViewChild *)list->data;
11218                       if (child->widget == GTK_WIDGET (edit_widget))
11219                         {
11220                           child->y += dy;
11221                           break;
11222                         }
11223                     }
11224                 }
11225             }
11226         }
11227       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11228
11229       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11230       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11231
11232       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11233         {
11234           /* update our dy and top_row */
11235           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11236
11237           if (!tree_view->priv->in_top_row_to_dy)
11238             gtk_tree_view_dy_to_top_row (tree_view);
11239         }
11240
11241       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11242       gtk_tree_view_bin_process_updates (tree_view);
11243     }
11244 }
11245
11246 \f
11247
11248 /* Public methods
11249  */
11250
11251 /**
11252  * gtk_tree_view_new:
11253  *
11254  * Creates a new #GtkTreeView widget.
11255  *
11256  * Return value: A newly created #GtkTreeView widget.
11257  **/
11258 GtkWidget *
11259 gtk_tree_view_new (void)
11260 {
11261   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11262 }
11263
11264 /**
11265  * gtk_tree_view_new_with_model:
11266  * @model: the model.
11267  *
11268  * Creates a new #GtkTreeView widget with the model initialized to @model.
11269  *
11270  * Return value: A newly created #GtkTreeView widget.
11271  **/
11272 GtkWidget *
11273 gtk_tree_view_new_with_model (GtkTreeModel *model)
11274 {
11275   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11276 }
11277
11278 /* Public Accessors
11279  */
11280
11281 /**
11282  * gtk_tree_view_get_model:
11283  * @tree_view: a #GtkTreeView
11284  *
11285  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11286  * model is unset.
11287  *
11288  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11289  **/
11290 GtkTreeModel *
11291 gtk_tree_view_get_model (GtkTreeView *tree_view)
11292 {
11293   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11294
11295   return tree_view->priv->model;
11296 }
11297
11298 /**
11299  * gtk_tree_view_set_model:
11300  * @tree_view: A #GtkTreeNode.
11301  * @model: (allow-none): The model.
11302  *
11303  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11304  * set, it will remove it before setting the new model.  If @model is %NULL,
11305  * then it will unset the old model.
11306  **/
11307 void
11308 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11309                          GtkTreeModel *model)
11310 {
11311   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11312   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11313
11314   if (model == tree_view->priv->model)
11315     return;
11316
11317   if (tree_view->priv->scroll_to_path)
11318     {
11319       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11320       tree_view->priv->scroll_to_path = NULL;
11321     }
11322
11323   if (tree_view->priv->model)
11324     {
11325       GList *tmplist = tree_view->priv->columns;
11326       GtkStyleContext *context;
11327
11328       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11329       gtk_tree_view_stop_editing (tree_view, TRUE);
11330
11331       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11332       gtk_style_context_cancel_animations (context, NULL);
11333
11334       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11335                                             gtk_tree_view_row_changed,
11336                                             tree_view);
11337       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11338                                             gtk_tree_view_row_inserted,
11339                                             tree_view);
11340       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11341                                             gtk_tree_view_row_has_child_toggled,
11342                                             tree_view);
11343       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11344                                             gtk_tree_view_row_deleted,
11345                                             tree_view);
11346       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11347                                             gtk_tree_view_rows_reordered,
11348                                             tree_view);
11349
11350       for (; tmplist; tmplist = tmplist->next)
11351         _gtk_tree_view_column_unset_model (tmplist->data,
11352                                            tree_view->priv->model);
11353
11354       if (tree_view->priv->tree)
11355         gtk_tree_view_free_rbtree (tree_view);
11356
11357       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11358       tree_view->priv->drag_dest_row = NULL;
11359       gtk_tree_row_reference_free (tree_view->priv->cursor);
11360       tree_view->priv->cursor = NULL;
11361       gtk_tree_row_reference_free (tree_view->priv->anchor);
11362       tree_view->priv->anchor = NULL;
11363       gtk_tree_row_reference_free (tree_view->priv->top_row);
11364       tree_view->priv->top_row = NULL;
11365       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11366       tree_view->priv->scroll_to_path = NULL;
11367
11368       tree_view->priv->scroll_to_column = NULL;
11369
11370       g_object_unref (tree_view->priv->model);
11371
11372       tree_view->priv->search_column = -1;
11373       tree_view->priv->fixed_height_check = 0;
11374       tree_view->priv->fixed_height = -1;
11375       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11376       tree_view->priv->last_button_x = -1;
11377       tree_view->priv->last_button_y = -1;
11378     }
11379
11380   tree_view->priv->model = model;
11381
11382   if (tree_view->priv->model)
11383     {
11384       gint i;
11385       GtkTreePath *path;
11386       GtkTreeIter iter;
11387       GtkTreeModelFlags flags;
11388
11389       if (tree_view->priv->search_column == -1)
11390         {
11391           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11392             {
11393               GType type = gtk_tree_model_get_column_type (model, i);
11394
11395               if (g_value_type_transformable (type, G_TYPE_STRING))
11396                 {
11397                   tree_view->priv->search_column = i;
11398                   break;
11399                 }
11400             }
11401         }
11402
11403       g_object_ref (tree_view->priv->model);
11404       g_signal_connect (tree_view->priv->model,
11405                         "row-changed",
11406                         G_CALLBACK (gtk_tree_view_row_changed),
11407                         tree_view);
11408       g_signal_connect (tree_view->priv->model,
11409                         "row-inserted",
11410                         G_CALLBACK (gtk_tree_view_row_inserted),
11411                         tree_view);
11412       g_signal_connect (tree_view->priv->model,
11413                         "row-has-child-toggled",
11414                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11415                         tree_view);
11416       g_signal_connect (tree_view->priv->model,
11417                         "row-deleted",
11418                         G_CALLBACK (gtk_tree_view_row_deleted),
11419                         tree_view);
11420       g_signal_connect (tree_view->priv->model,
11421                         "rows-reordered",
11422                         G_CALLBACK (gtk_tree_view_rows_reordered),
11423                         tree_view);
11424
11425       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11426       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11427         tree_view->priv->is_list = TRUE;
11428       else
11429         tree_view->priv->is_list = FALSE;
11430
11431       path = gtk_tree_path_new_first ();
11432       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11433         {
11434           tree_view->priv->tree = _gtk_rbtree_new ();
11435           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11436         }
11437       gtk_tree_path_free (path);
11438
11439       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11440       install_presize_handler (tree_view);
11441     }
11442
11443   g_object_notify (G_OBJECT (tree_view), "model");
11444
11445   if (tree_view->priv->selection)
11446   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11447
11448   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11449     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11450 }
11451
11452 /**
11453  * gtk_tree_view_get_selection:
11454  * @tree_view: A #GtkTreeView.
11455  *
11456  * Gets the #GtkTreeSelection associated with @tree_view.
11457  *
11458  * Return value: (transfer none): A #GtkTreeSelection object.
11459  **/
11460 GtkTreeSelection *
11461 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11462 {
11463   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11464
11465   return tree_view->priv->selection;
11466 }
11467
11468 /**
11469  * gtk_tree_view_get_hadjustment:
11470  * @tree_view: A #GtkTreeView
11471  *
11472  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11473  *
11474  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11475  *     if none is currently being used.
11476  *
11477  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11478  **/
11479 GtkAdjustment *
11480 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11481 {
11482   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11483
11484   return tree_view->priv->hadjustment;
11485 }
11486
11487 /**
11488  * gtk_tree_view_set_hadjustment:
11489  * @tree_view: A #GtkTreeView
11490  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11491  *
11492  * Sets the #GtkAdjustment for the current horizontal aspect.
11493  *
11494  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11495  **/
11496 void
11497 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11498                                GtkAdjustment *adjustment)
11499 {
11500   GtkTreeViewPrivate *priv = tree_view->priv;
11501
11502   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11503   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11504
11505   if (adjustment && priv->hadjustment == adjustment)
11506     return;
11507
11508   if (priv->hadjustment != NULL)
11509     {
11510       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11511                                             gtk_tree_view_adjustment_changed,
11512                                             tree_view);
11513       g_object_unref (priv->hadjustment);
11514     }
11515
11516   if (adjustment == NULL)
11517     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11518                                      0.0, 0.0, 0.0);
11519
11520   g_signal_connect (adjustment, "value-changed",
11521                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11522   priv->hadjustment = g_object_ref_sink (adjustment);
11523   /* FIXME: Adjustment should probably be populated here with fresh values, but
11524    * internal details are too complicated for me to decipher right now.
11525    */
11526   gtk_tree_view_adjustment_changed (NULL, tree_view);
11527
11528   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11529 }
11530
11531 /**
11532  * gtk_tree_view_get_vadjustment:
11533  * @tree_view: A #GtkTreeView
11534  *
11535  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11536  *
11537  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11538  *     if none is currently being used.
11539  *
11540  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11541  **/
11542 GtkAdjustment *
11543 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11544 {
11545   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11546
11547   return tree_view->priv->vadjustment;
11548 }
11549
11550 /**
11551  * gtk_tree_view_set_vadjustment:
11552  * @tree_view: A #GtkTreeView
11553  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11554  *
11555  * Sets the #GtkAdjustment for the current vertical aspect.
11556  *
11557  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11558  **/
11559 void
11560 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11561                                GtkAdjustment *adjustment)
11562 {
11563   GtkTreeViewPrivate *priv = tree_view->priv;
11564
11565   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11566   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11567
11568   if (adjustment && priv->vadjustment == adjustment)
11569     return;
11570
11571   if (priv->vadjustment != NULL)
11572     {
11573       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11574                                             gtk_tree_view_adjustment_changed,
11575                                             tree_view);
11576       g_object_unref (priv->vadjustment);
11577     }
11578
11579   if (adjustment == NULL)
11580     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11581                                      0.0, 0.0, 0.0);
11582
11583   g_signal_connect (adjustment, "value-changed",
11584                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11585   priv->vadjustment = g_object_ref_sink (adjustment);
11586   /* FIXME: Adjustment should probably be populated here with fresh values, but
11587    * internal details are too complicated for me to decipher right now.
11588    */
11589   gtk_tree_view_adjustment_changed (NULL, tree_view);
11590   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11591 }
11592
11593 /* Column and header operations */
11594
11595 /**
11596  * gtk_tree_view_get_headers_visible:
11597  * @tree_view: A #GtkTreeView.
11598  *
11599  * Returns %TRUE if the headers on the @tree_view are visible.
11600  *
11601  * Return value: Whether the headers are visible or not.
11602  **/
11603 gboolean
11604 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11605 {
11606   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11607
11608   return tree_view->priv->headers_visible;
11609 }
11610
11611 /**
11612  * gtk_tree_view_set_headers_visible:
11613  * @tree_view: A #GtkTreeView.
11614  * @headers_visible: %TRUE if the headers are visible
11615  *
11616  * Sets the visibility state of the headers.
11617  **/
11618 void
11619 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11620                                    gboolean     headers_visible)
11621 {
11622   gint x, y;
11623   GList *list;
11624   GtkTreeViewColumn *column;
11625   GtkAllocation allocation;
11626   GtkWidget *button;
11627
11628   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11629
11630   headers_visible = !! headers_visible;
11631
11632   if (tree_view->priv->headers_visible == headers_visible)
11633     return;
11634
11635   tree_view->priv->headers_visible = headers_visible == TRUE;
11636
11637   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11638     {
11639       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11640       if (headers_visible)
11641         {
11642           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11643           gdk_window_move_resize (tree_view->priv->bin_window,
11644                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11645                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11646
11647           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11648             gtk_tree_view_map_buttons (tree_view);
11649         }
11650       else
11651         {
11652           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11653
11654           for (list = tree_view->priv->columns; list; list = list->next)
11655             {
11656               column = list->data;
11657               button = gtk_tree_view_column_get_button (column);
11658
11659               gtk_widget_hide (button);
11660               gtk_widget_unmap (button);
11661             }
11662           gdk_window_hide (tree_view->priv->header_window);
11663         }
11664     }
11665
11666   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11667   gtk_adjustment_configure (tree_view->priv->vadjustment,
11668                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11669                             0,
11670                             tree_view->priv->height,
11671                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11672                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11673                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11674
11675   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11676
11677   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11678 }
11679
11680 /**
11681  * gtk_tree_view_columns_autosize:
11682  * @tree_view: A #GtkTreeView.
11683  *
11684  * Resizes all columns to their optimal width. Only works after the
11685  * treeview has been realized.
11686  **/
11687 void
11688 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11689 {
11690   gboolean dirty = FALSE;
11691   GList *list;
11692   GtkTreeViewColumn *column;
11693
11694   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11695
11696   for (list = tree_view->priv->columns; list; list = list->next)
11697     {
11698       column = list->data;
11699       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11700         continue;
11701       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11702       dirty = TRUE;
11703     }
11704
11705   if (dirty)
11706     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11707 }
11708
11709 /**
11710  * gtk_tree_view_set_headers_clickable:
11711  * @tree_view: A #GtkTreeView.
11712  * @setting: %TRUE if the columns are clickable.
11713  *
11714  * Allow the column title buttons to be clicked.
11715  **/
11716 void
11717 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11718                                      gboolean   setting)
11719 {
11720   GList *list;
11721
11722   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11723
11724   for (list = tree_view->priv->columns; list; list = list->next)
11725     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11726
11727   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11728 }
11729
11730
11731 /**
11732  * gtk_tree_view_get_headers_clickable:
11733  * @tree_view: A #GtkTreeView.
11734  *
11735  * Returns whether all header columns are clickable.
11736  *
11737  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11738  *
11739  * Since: 2.10
11740  **/
11741 gboolean
11742 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11743 {
11744   GList *list;
11745
11746   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11747
11748   for (list = tree_view->priv->columns; list; list = list->next)
11749     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11750       return FALSE;
11751
11752   return TRUE;
11753 }
11754
11755 /**
11756  * gtk_tree_view_set_rules_hint
11757  * @tree_view: a #GtkTreeView
11758  * @setting: %TRUE if the tree requires reading across rows
11759  *
11760  * This function tells GTK+ that the user interface for your
11761  * application requires users to read across tree rows and associate
11762  * cells with one another. By default, GTK+ will then render the tree
11763  * with alternating row colors. Do <emphasis>not</emphasis> use it
11764  * just because you prefer the appearance of the ruled tree; that's a
11765  * question for the theme. Some themes will draw tree rows in
11766  * alternating colors even when rules are turned off, and users who
11767  * prefer that appearance all the time can choose those themes. You
11768  * should call this function only as a <emphasis>semantic</emphasis>
11769  * hint to the theme engine that your tree makes alternating colors
11770  * useful from a functional standpoint (since it has lots of columns,
11771  * generally).
11772  *
11773  **/
11774 void
11775 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11776                               gboolean      setting)
11777 {
11778   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11779
11780   setting = setting != FALSE;
11781
11782   if (tree_view->priv->has_rules != setting)
11783     {
11784       tree_view->priv->has_rules = setting;
11785       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11786     }
11787
11788   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11789 }
11790
11791 /**
11792  * gtk_tree_view_get_rules_hint
11793  * @tree_view: a #GtkTreeView
11794  *
11795  * Gets the setting set by gtk_tree_view_set_rules_hint().
11796  *
11797  * Return value: %TRUE if rules are useful for the user of this tree
11798  **/
11799 gboolean
11800 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11801 {
11802   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11803
11804   return tree_view->priv->has_rules;
11805 }
11806
11807 /* Public Column functions
11808  */
11809
11810 /**
11811  * gtk_tree_view_append_column:
11812  * @tree_view: A #GtkTreeView.
11813  * @column: The #GtkTreeViewColumn to add.
11814  *
11815  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11816  * mode enabled, then @column must have its "sizing" property set to be
11817  * GTK_TREE_VIEW_COLUMN_FIXED.
11818  *
11819  * Return value: The number of columns in @tree_view after appending.
11820  **/
11821 gint
11822 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11823                              GtkTreeViewColumn *column)
11824 {
11825   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11826   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11827   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11828
11829   return gtk_tree_view_insert_column (tree_view, column, -1);
11830 }
11831
11832 void
11833 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11834 {
11835   GList *columns;
11836
11837   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11838     {
11839       GtkTreeViewColumn *column = columns->data;
11840       GtkWidget *header_widget;
11841
11842       if (gtk_tree_view_column_get_visible (column))
11843         continue;
11844
11845       header_widget = gtk_tree_view_column_get_widget (column);
11846
11847       if (!header_widget)
11848         header_widget = gtk_tree_view_column_get_button (column);
11849
11850       gtk_widget_reset_style (header_widget);
11851     }
11852 }
11853
11854
11855 /**
11856  * gtk_tree_view_remove_column:
11857  * @tree_view: A #GtkTreeView.
11858  * @column: The #GtkTreeViewColumn to remove.
11859  *
11860  * Removes @column from @tree_view.
11861  *
11862  * Return value: The number of columns in @tree_view after removing.
11863  **/
11864 gint
11865 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11866                              GtkTreeViewColumn *column)
11867 {
11868   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11869   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11870   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11871
11872   if (tree_view->priv->focus_column == column)
11873     tree_view->priv->focus_column = NULL;
11874
11875   if (tree_view->priv->edited_column == column)
11876     {
11877       gtk_tree_view_stop_editing (tree_view, TRUE);
11878
11879       /* no need to, but just to be sure ... */
11880       tree_view->priv->edited_column = NULL;
11881     }
11882
11883   if (tree_view->priv->expander_column == column)
11884     tree_view->priv->expander_column = NULL;
11885
11886   g_signal_handlers_disconnect_by_func (column,
11887                                         G_CALLBACK (column_sizing_notify),
11888                                         tree_view);
11889
11890   _gtk_tree_view_column_unset_tree_view (column);
11891
11892   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11893   tree_view->priv->n_columns--;
11894
11895   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11896     {
11897       GList *list;
11898
11899       _gtk_tree_view_column_unrealize_button (column);
11900       for (list = tree_view->priv->columns; list; list = list->next)
11901         {
11902           GtkTreeViewColumn *tmp_column;
11903
11904           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11905           if (gtk_tree_view_column_get_visible (tmp_column))
11906             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11907         }
11908
11909       if (tree_view->priv->n_columns == 0 &&
11910           gtk_tree_view_get_headers_visible (tree_view))
11911         gdk_window_hide (tree_view->priv->header_window);
11912
11913       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11914     }
11915
11916   _gtk_tree_view_reset_header_styles (tree_view);
11917
11918   g_object_unref (column);
11919   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11920
11921   return tree_view->priv->n_columns;
11922 }
11923
11924 /**
11925  * gtk_tree_view_insert_column:
11926  * @tree_view: A #GtkTreeView.
11927  * @column: The #GtkTreeViewColumn to be inserted.
11928  * @position: The position to insert @column in.
11929  *
11930  * This inserts the @column into the @tree_view at @position.  If @position is
11931  * -1, then the column is inserted at the end. If @tree_view has
11932  * "fixed_height" mode enabled, then @column must have its "sizing" property
11933  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11934  *
11935  * Return value: The number of columns in @tree_view after insertion.
11936  **/
11937 gint
11938 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11939                              GtkTreeViewColumn *column,
11940                              gint               position)
11941 {
11942   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11943   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11944   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11945
11946   if (tree_view->priv->fixed_height_mode)
11947     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11948                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11949
11950   g_object_ref_sink (column);
11951
11952   if (tree_view->priv->n_columns == 0 &&
11953       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11954       gtk_tree_view_get_headers_visible (tree_view))
11955     {
11956       gdk_window_show (tree_view->priv->header_window);
11957     }
11958
11959   g_signal_connect (column, "notify::sizing",
11960                     G_CALLBACK (column_sizing_notify), tree_view);
11961
11962   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11963                                             column, position);
11964   tree_view->priv->n_columns++;
11965
11966   _gtk_tree_view_column_set_tree_view (column, tree_view);
11967
11968   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11969     {
11970       GList *list;
11971
11972       _gtk_tree_view_column_realize_button (column);
11973
11974       for (list = tree_view->priv->columns; list; list = list->next)
11975         {
11976           column = GTK_TREE_VIEW_COLUMN (list->data);
11977           if (gtk_tree_view_column_get_visible (column))
11978             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11979         }
11980       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11981     }
11982
11983   _gtk_tree_view_reset_header_styles (tree_view);
11984   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11985
11986   return tree_view->priv->n_columns;
11987 }
11988
11989 /**
11990  * gtk_tree_view_insert_column_with_attributes:
11991  * @tree_view: A #GtkTreeView
11992  * @position: The position to insert the new column in.
11993  * @title: The title to set the header to.
11994  * @cell: The #GtkCellRenderer.
11995  * @Varargs: A %NULL-terminated list of attributes.
11996  *
11997  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11998  * @position.  If @position is -1, then the newly created column is inserted at
11999  * the end.  The column is initialized with the attributes given. If @tree_view
12000  * has "fixed_height" mode enabled, then the new column will have its sizing
12001  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12002  *
12003  * Return value: The number of columns in @tree_view after insertion.
12004  **/
12005 gint
12006 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12007                                              gint             position,
12008                                              const gchar     *title,
12009                                              GtkCellRenderer *cell,
12010                                              ...)
12011 {
12012   GtkTreeViewColumn *column;
12013   gchar *attribute;
12014   va_list args;
12015   gint column_id;
12016
12017   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12018
12019   column = gtk_tree_view_column_new ();
12020   if (tree_view->priv->fixed_height_mode)
12021     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12022
12023   gtk_tree_view_column_set_title (column, title);
12024   gtk_tree_view_column_pack_start (column, cell, TRUE);
12025
12026   va_start (args, cell);
12027
12028   attribute = va_arg (args, gchar *);
12029
12030   while (attribute != NULL)
12031     {
12032       column_id = va_arg (args, gint);
12033       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12034       attribute = va_arg (args, gchar *);
12035     }
12036
12037   va_end (args);
12038
12039   gtk_tree_view_insert_column (tree_view, column, position);
12040
12041   return tree_view->priv->n_columns;
12042 }
12043
12044 /**
12045  * gtk_tree_view_insert_column_with_data_func:
12046  * @tree_view: a #GtkTreeView
12047  * @position: Position to insert, -1 for append
12048  * @title: column title
12049  * @cell: cell renderer for column
12050  * @func: function to set attributes of cell renderer
12051  * @data: data for @func
12052  * @dnotify: destroy notifier for @data
12053  *
12054  * Convenience function that inserts a new column into the #GtkTreeView
12055  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12056  * attributes (normally using data from the model). See also
12057  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12058  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12059  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12060  *
12061  * Return value: number of columns in the tree view post-insert
12062  **/
12063 gint
12064 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12065                                              gint                       position,
12066                                              const gchar               *title,
12067                                              GtkCellRenderer           *cell,
12068                                              GtkTreeCellDataFunc        func,
12069                                              gpointer                   data,
12070                                              GDestroyNotify             dnotify)
12071 {
12072   GtkTreeViewColumn *column;
12073
12074   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12075
12076   column = gtk_tree_view_column_new ();
12077   if (tree_view->priv->fixed_height_mode)
12078     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12079
12080   gtk_tree_view_column_set_title (column, title);
12081   gtk_tree_view_column_pack_start (column, cell, TRUE);
12082   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12083
12084   gtk_tree_view_insert_column (tree_view, column, position);
12085
12086   return tree_view->priv->n_columns;
12087 }
12088
12089 /**
12090  * gtk_tree_view_get_column:
12091  * @tree_view: A #GtkTreeView.
12092  * @n: The position of the column, counting from 0.
12093  *
12094  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12095  *
12096  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12097  *     position is outside the range of columns.
12098  **/
12099 GtkTreeViewColumn *
12100 gtk_tree_view_get_column (GtkTreeView *tree_view,
12101                           gint         n)
12102 {
12103   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12104
12105   if (n < 0 || n >= tree_view->priv->n_columns)
12106     return NULL;
12107
12108   if (tree_view->priv->columns == NULL)
12109     return NULL;
12110
12111   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12112 }
12113
12114 /**
12115  * gtk_tree_view_get_columns:
12116  * @tree_view: A #GtkTreeView
12117  *
12118  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12119  * The returned list must be freed with g_list_free ().
12120  *
12121  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12122  **/
12123 GList *
12124 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12125 {
12126   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12127
12128   return g_list_copy (tree_view->priv->columns);
12129 }
12130
12131 /**
12132  * gtk_tree_view_move_column_after:
12133  * @tree_view: A #GtkTreeView
12134  * @column: The #GtkTreeViewColumn to be moved.
12135  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12136  *
12137  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12138  * @column is placed in the first position.
12139  **/
12140 void
12141 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12142                                  GtkTreeViewColumn *column,
12143                                  GtkTreeViewColumn *base_column)
12144 {
12145   GList *column_list_el, *base_el = NULL;
12146
12147   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12148
12149   column_list_el = g_list_find (tree_view->priv->columns, column);
12150   g_return_if_fail (column_list_el != NULL);
12151
12152   if (base_column)
12153     {
12154       base_el = g_list_find (tree_view->priv->columns, base_column);
12155       g_return_if_fail (base_el != NULL);
12156     }
12157
12158   if (column_list_el->prev == base_el)
12159     return;
12160
12161   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12162   if (base_el == NULL)
12163     {
12164       column_list_el->prev = NULL;
12165       column_list_el->next = tree_view->priv->columns;
12166       if (column_list_el->next)
12167         column_list_el->next->prev = column_list_el;
12168       tree_view->priv->columns = column_list_el;
12169     }
12170   else
12171     {
12172       column_list_el->prev = base_el;
12173       column_list_el->next = base_el->next;
12174       if (column_list_el->next)
12175         column_list_el->next->prev = column_list_el;
12176       base_el->next = column_list_el;
12177     }
12178
12179   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12180     {
12181       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12182       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12183     }
12184
12185   _gtk_tree_view_reset_header_styles (tree_view);
12186   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12187 }
12188
12189 /**
12190  * gtk_tree_view_set_expander_column:
12191  * @tree_view: A #GtkTreeView
12192  * @column: %NULL, or the column to draw the expander arrow at.
12193  *
12194  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12195  * If @column is %NULL, then the expander arrow is always at the first
12196  * visible column.
12197  *
12198  * If you do not want expander arrow to appear in your tree, set the
12199  * expander column to a hidden column.
12200  **/
12201 void
12202 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12203                                    GtkTreeViewColumn *column)
12204 {
12205   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12206   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12207
12208   if (tree_view->priv->expander_column != column)
12209     {
12210       GList *list;
12211
12212       if (column)
12213         {
12214           /* Confirm that column is in tree_view */
12215           for (list = tree_view->priv->columns; list; list = list->next)
12216             if (list->data == column)
12217               break;
12218           g_return_if_fail (list != NULL);
12219         }
12220
12221       tree_view->priv->expander_column = column;
12222       g_object_notify (G_OBJECT (tree_view), "expander-column");
12223     }
12224 }
12225
12226 /**
12227  * gtk_tree_view_get_expander_column:
12228  * @tree_view: A #GtkTreeView
12229  *
12230  * Returns the column that is the current expander column.
12231  * This column has the expander arrow drawn next to it.
12232  *
12233  * Return value: (transfer none): The expander column.
12234  **/
12235 GtkTreeViewColumn *
12236 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12237 {
12238   GList *list;
12239
12240   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12241
12242   for (list = tree_view->priv->columns; list; list = list->next)
12243     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12244       return (GtkTreeViewColumn *) list->data;
12245   return NULL;
12246 }
12247
12248
12249 /**
12250  * gtk_tree_view_set_column_drag_function:
12251  * @tree_view: A #GtkTreeView.
12252  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12253  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12254  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12255  *
12256  * Sets a user function for determining where a column may be dropped when
12257  * dragged.  This function is called on every column pair in turn at the
12258  * beginning of a column drag to determine where a drop can take place.  The
12259  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12260  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12261  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12262  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12263  * @tree_view reverts to the default behavior of allowing all columns to be
12264  * dropped everywhere.
12265  **/
12266 void
12267 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12268                                         GtkTreeViewColumnDropFunc  func,
12269                                         gpointer                   user_data,
12270                                         GDestroyNotify             destroy)
12271 {
12272   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12273
12274   if (tree_view->priv->column_drop_func_data_destroy)
12275     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12276
12277   tree_view->priv->column_drop_func = func;
12278   tree_view->priv->column_drop_func_data = user_data;
12279   tree_view->priv->column_drop_func_data_destroy = destroy;
12280 }
12281
12282 /**
12283  * gtk_tree_view_scroll_to_point:
12284  * @tree_view: a #GtkTreeView
12285  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12286  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12287  *
12288  * Scrolls the tree view such that the top-left corner of the visible
12289  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12290  * in tree coordinates.  The @tree_view must be realized before
12291  * this function is called.  If it isn't, you probably want to be
12292  * using gtk_tree_view_scroll_to_cell().
12293  *
12294  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12295  **/
12296 void
12297 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12298                                gint         tree_x,
12299                                gint         tree_y)
12300 {
12301   GtkAdjustment *hadj;
12302   GtkAdjustment *vadj;
12303
12304   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12305   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12306
12307   hadj = tree_view->priv->hadjustment;
12308   vadj = tree_view->priv->vadjustment;
12309
12310   if (tree_x != -1)
12311     gtk_adjustment_set_value (hadj, tree_x);
12312   if (tree_y != -1)
12313     gtk_adjustment_set_value (vadj, tree_y);
12314 }
12315
12316 /**
12317  * gtk_tree_view_scroll_to_cell:
12318  * @tree_view: A #GtkTreeView.
12319  * @path: (allow-none): The path of the row to move to, or %NULL.
12320  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12321  * @use_align: whether to use alignment arguments, or %FALSE.
12322  * @row_align: The vertical alignment of the row specified by @path.
12323  * @col_align: The horizontal alignment of the column specified by @column.
12324  *
12325  * Moves the alignments of @tree_view to the position specified by @column and
12326  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12327  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12328  * or @path need to be non-%NULL.  @row_align determines where the row is
12329  * placed, and @col_align determines where @column is placed.  Both are expected
12330  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12331  * right/bottom alignment, 0.5 means center.
12332  *
12333  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12334  * tree does the minimum amount of work to scroll the cell onto the screen.
12335  * This means that the cell will be scrolled to the edge closest to its current
12336  * position.  If the cell is currently visible on the screen, nothing is done.
12337  *
12338  * This function only works if the model is set, and @path is a valid row on the
12339  * model.  If the model changes before the @tree_view is realized, the centered
12340  * path will be modified to reflect this change.
12341  **/
12342 void
12343 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12344                               GtkTreePath       *path,
12345                               GtkTreeViewColumn *column,
12346                               gboolean           use_align,
12347                               gfloat             row_align,
12348                               gfloat             col_align)
12349 {
12350   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12351   g_return_if_fail (tree_view->priv->model != NULL);
12352   g_return_if_fail (tree_view->priv->tree != NULL);
12353   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12354   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12355   g_return_if_fail (path != NULL || column != NULL);
12356
12357 #if 0
12358   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12359            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12360 #endif
12361   row_align = CLAMP (row_align, 0.0, 1.0);
12362   col_align = CLAMP (col_align, 0.0, 1.0);
12363
12364
12365   /* Note: Despite the benefits that come from having one code path for the
12366    * scrolling code, we short-circuit validate_visible_area's immplementation as
12367    * it is much slower than just going to the point.
12368    */
12369   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12370       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12371       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12372       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12373     {
12374       if (tree_view->priv->scroll_to_path)
12375         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12376
12377       tree_view->priv->scroll_to_path = NULL;
12378       tree_view->priv->scroll_to_column = NULL;
12379
12380       if (path)
12381         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12382       if (column)
12383         tree_view->priv->scroll_to_column = column;
12384       tree_view->priv->scroll_to_use_align = use_align;
12385       tree_view->priv->scroll_to_row_align = row_align;
12386       tree_view->priv->scroll_to_col_align = col_align;
12387
12388       install_presize_handler (tree_view);
12389     }
12390   else
12391     {
12392       GdkRectangle cell_rect;
12393       GdkRectangle vis_rect;
12394       gint dest_x, dest_y;
12395
12396       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12397       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12398
12399       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12400
12401       dest_x = vis_rect.x;
12402       dest_y = vis_rect.y;
12403
12404       if (column)
12405         {
12406           if (use_align)
12407             {
12408               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12409             }
12410           else
12411             {
12412               if (cell_rect.x < vis_rect.x)
12413                 dest_x = cell_rect.x;
12414               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12415                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12416             }
12417         }
12418
12419       if (path)
12420         {
12421           if (use_align)
12422             {
12423               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12424               dest_y = MAX (dest_y, 0);
12425             }
12426           else
12427             {
12428               if (cell_rect.y < vis_rect.y)
12429                 dest_y = cell_rect.y;
12430               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12431                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12432             }
12433         }
12434
12435       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12436     }
12437 }
12438
12439 /**
12440  * gtk_tree_view_row_activated:
12441  * @tree_view: A #GtkTreeView
12442  * @path: The #GtkTreePath to be activated.
12443  * @column: The #GtkTreeViewColumn to be activated.
12444  *
12445  * Activates the cell determined by @path and @column.
12446  **/
12447 void
12448 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12449                              GtkTreePath       *path,
12450                              GtkTreeViewColumn *column)
12451 {
12452   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12453
12454   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12455 }
12456
12457
12458 static void
12459 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12460                                           GtkRBNode *node,
12461                                           gpointer   data)
12462 {
12463   GtkTreeView *tree_view = data;
12464
12465   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12466       node->children)
12467     {
12468       GtkTreePath *path;
12469       GtkTreeIter iter;
12470
12471       path = _gtk_tree_view_find_path (tree_view, tree, node);
12472       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12473
12474       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12475
12476       gtk_tree_path_free (path);
12477     }
12478
12479   if (node->children)
12480     _gtk_rbtree_traverse (node->children,
12481                           node->children->root,
12482                           G_PRE_ORDER,
12483                           gtk_tree_view_expand_all_emission_helper,
12484                           tree_view);
12485 }
12486
12487 /**
12488  * gtk_tree_view_expand_all:
12489  * @tree_view: A #GtkTreeView.
12490  *
12491  * Recursively expands all nodes in the @tree_view.
12492  **/
12493 void
12494 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12495 {
12496   GtkTreePath *path;
12497   GtkRBTree *tree;
12498   GtkRBNode *node;
12499
12500   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12501
12502   if (tree_view->priv->tree == NULL)
12503     return;
12504
12505   path = gtk_tree_path_new_first ();
12506   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12507
12508   while (node)
12509     {
12510       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12511       node = _gtk_rbtree_next (tree, node);
12512       gtk_tree_path_next (path);
12513   }
12514
12515   gtk_tree_path_free (path);
12516 }
12517
12518 /**
12519  * gtk_tree_view_collapse_all:
12520  * @tree_view: A #GtkTreeView.
12521  *
12522  * Recursively collapses all visible, expanded nodes in @tree_view.
12523  **/
12524 void
12525 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12526 {
12527   GtkRBTree *tree;
12528   GtkRBNode *node;
12529   GtkTreePath *path;
12530   gint *indices;
12531
12532   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12533
12534   if (tree_view->priv->tree == NULL)
12535     return;
12536
12537   path = gtk_tree_path_new ();
12538   gtk_tree_path_down (path);
12539   indices = gtk_tree_path_get_indices (path);
12540
12541   tree = tree_view->priv->tree;
12542   node = tree->root;
12543   while (node && node->left != tree->nil)
12544     node = node->left;
12545
12546   while (node)
12547     {
12548       if (node->children)
12549         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12550       indices[0]++;
12551       node = _gtk_rbtree_next (tree, node);
12552     }
12553
12554   gtk_tree_path_free (path);
12555 }
12556
12557 /**
12558  * gtk_tree_view_expand_to_path:
12559  * @tree_view: A #GtkTreeView.
12560  * @path: path to a row.
12561  *
12562  * Expands the row at @path. This will also expand all parent rows of
12563  * @path as necessary.
12564  *
12565  * Since: 2.2
12566  **/
12567 void
12568 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12569                               GtkTreePath *path)
12570 {
12571   gint i, depth;
12572   gint *indices;
12573   GtkTreePath *tmp;
12574
12575   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12576   g_return_if_fail (path != NULL);
12577
12578   depth = gtk_tree_path_get_depth (path);
12579   indices = gtk_tree_path_get_indices (path);
12580
12581   tmp = gtk_tree_path_new ();
12582   g_return_if_fail (tmp != NULL);
12583
12584   for (i = 0; i < depth; i++)
12585     {
12586       gtk_tree_path_append_index (tmp, indices[i]);
12587       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12588     }
12589
12590   gtk_tree_path_free (tmp);
12591 }
12592
12593 /* FIXME the bool return values for expand_row and collapse_row are
12594  * not analagous; they should be TRUE if the row had children and
12595  * was not already in the requested state.
12596  */
12597
12598
12599 static gboolean
12600 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12601                                GtkTreePath *path,
12602                                GtkRBTree   *tree,
12603                                GtkRBNode   *node,
12604                                gboolean     open_all,
12605                                gboolean     animate)
12606 {
12607   GtkTreeIter iter;
12608   GtkTreeIter temp;
12609   gboolean expand;
12610
12611   if (animate)
12612     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12613                   "gtk-enable-animations", &animate,
12614                   NULL);
12615
12616   remove_auto_expand_timeout (tree_view);
12617
12618   if (node->children && !open_all)
12619     return FALSE;
12620
12621   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12622     return FALSE;
12623
12624   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12625   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12626     return FALSE;
12627
12628
12629    if (node->children && open_all)
12630     {
12631       gboolean retval = FALSE;
12632       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12633
12634       gtk_tree_path_append_index (tmp_path, 0);
12635       tree = node->children;
12636       node = tree->root;
12637       while (node->left != tree->nil)
12638         node = node->left;
12639       /* try to expand the children */
12640       do
12641         {
12642          gboolean t;
12643          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12644                                             TRUE, animate);
12645          if (t)
12646            retval = TRUE;
12647
12648          gtk_tree_path_next (tmp_path);
12649          node = _gtk_rbtree_next (tree, node);
12650        }
12651       while (node != NULL);
12652
12653       gtk_tree_path_free (tmp_path);
12654
12655       return retval;
12656     }
12657
12658   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12659
12660   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12661     return FALSE;
12662
12663   if (expand)
12664     return FALSE;
12665
12666   node->children = _gtk_rbtree_new ();
12667   node->children->parent_tree = tree;
12668   node->children->parent_node = node;
12669
12670   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12671
12672   gtk_tree_view_build_tree (tree_view,
12673                             node->children,
12674                             &temp,
12675                             gtk_tree_path_get_depth (path) + 1,
12676                             open_all);
12677
12678   if (animate)
12679     {
12680       GtkStyleContext *context;
12681
12682       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12683
12684       gtk_style_context_save (context);
12685       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12686
12687       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12688                                              node, GTK_STATE_ACTIVE, TRUE);
12689
12690       _gtk_style_context_invalidate_animation_areas (context);
12691       gtk_style_context_restore (context);
12692     }
12693
12694   install_presize_handler (tree_view);
12695
12696   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12697   if (open_all && node->children)
12698     {
12699       _gtk_rbtree_traverse (node->children,
12700                             node->children->root,
12701                             G_PRE_ORDER,
12702                             gtk_tree_view_expand_all_emission_helper,
12703                             tree_view);
12704     }
12705   return TRUE;
12706 }
12707
12708
12709 /**
12710  * gtk_tree_view_expand_row:
12711  * @tree_view: a #GtkTreeView
12712  * @path: path to a row
12713  * @open_all: whether to recursively expand, or just expand immediate children
12714  *
12715  * Opens the row so its children are visible.
12716  *
12717  * Return value: %TRUE if the row existed and had children
12718  **/
12719 gboolean
12720 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12721                           GtkTreePath *path,
12722                           gboolean     open_all)
12723 {
12724   GtkRBTree *tree;
12725   GtkRBNode *node;
12726
12727   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12728   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12729   g_return_val_if_fail (path != NULL, FALSE);
12730
12731   if (_gtk_tree_view_find_node (tree_view,
12732                                 path,
12733                                 &tree,
12734                                 &node))
12735     return FALSE;
12736
12737   if (tree != NULL)
12738     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12739   else
12740     return FALSE;
12741 }
12742
12743 static gboolean
12744 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12745                                  GtkTreePath *path,
12746                                  GtkRBTree   *tree,
12747                                  GtkRBNode   *node,
12748                                  gboolean     animate)
12749 {
12750   GtkTreeIter iter;
12751   GtkTreeIter children;
12752   gboolean collapse;
12753   gint x, y;
12754   GList *list;
12755   GdkWindow *child, *parent;
12756
12757   if (animate)
12758     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12759                   "gtk-enable-animations", &animate,
12760                   NULL);
12761
12762   remove_auto_expand_timeout (tree_view);
12763
12764   if (node->children == NULL)
12765     return FALSE;
12766   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12767
12768   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12769
12770   if (collapse)
12771     return FALSE;
12772
12773   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12774    * a chance to prelight the correct node below */
12775
12776   if (tree_view->priv->prelight_tree)
12777     {
12778       GtkRBTree *parent_tree;
12779       GtkRBNode *parent_node;
12780
12781       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12782       parent_node = tree_view->priv->prelight_tree->parent_node;
12783       while (parent_tree)
12784         {
12785           if (parent_tree == tree && parent_node == node)
12786             {
12787               ensure_unprelighted (tree_view);
12788               break;
12789             }
12790           parent_node = parent_tree->parent_node;
12791           parent_tree = parent_tree->parent_tree;
12792         }
12793     }
12794
12795   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12796
12797   for (list = tree_view->priv->columns; list; list = list->next)
12798     {
12799       GtkTreeViewColumn *column = list->data;
12800
12801       if (gtk_tree_view_column_get_visible (column) == FALSE)
12802         continue;
12803       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12804         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12805     }
12806
12807   if (tree_view->priv->destroy_count_func)
12808     {
12809       GtkTreePath *child_path;
12810       gint child_count = 0;
12811       child_path = gtk_tree_path_copy (path);
12812       gtk_tree_path_down (child_path);
12813       if (node->children)
12814         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12815       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12816       gtk_tree_path_free (child_path);
12817     }
12818
12819   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12820     {
12821       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12822
12823       if (gtk_tree_path_is_ancestor (path, cursor_path))
12824         {
12825           gtk_tree_row_reference_free (tree_view->priv->cursor);
12826           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12827                                                                       tree_view->priv->model,
12828                                                                       path);
12829         }
12830       gtk_tree_path_free (cursor_path);
12831     }
12832
12833   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12834     {
12835       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12836       if (gtk_tree_path_is_ancestor (path, anchor_path))
12837         {
12838           gtk_tree_row_reference_free (tree_view->priv->anchor);
12839           tree_view->priv->anchor = NULL;
12840         }
12841       gtk_tree_path_free (anchor_path);
12842     }
12843
12844   /* Stop a pending double click */
12845   tree_view->priv->last_button_x = -1;
12846   tree_view->priv->last_button_y = -1;
12847
12848   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12849     {
12850       _gtk_rbtree_remove (node->children);
12851       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12852     }
12853   else
12854     _gtk_rbtree_remove (node->children);
12855
12856   if (animate)
12857     {
12858       GtkStyleContext *context;
12859
12860       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12861
12862       gtk_style_context_save (context);
12863       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12864
12865       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12866                                              node, GTK_STATE_ACTIVE, FALSE);
12867
12868       _gtk_style_context_invalidate_animation_areas (context);
12869       gtk_style_context_restore (context);
12870     }
12871
12872   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12873     {
12874       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12875     }
12876
12877   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12878
12879   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12880     {
12881       /* now that we've collapsed all rows, we want to try to set the prelight
12882        * again. To do this, we fake a motion event and send it to ourselves. */
12883
12884       child = tree_view->priv->bin_window;
12885       parent = gdk_window_get_parent (child);
12886
12887       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12888         {
12889           GdkEventMotion event;
12890           gint child_x, child_y;
12891
12892           gdk_window_get_position (child, &child_x, &child_y);
12893
12894           event.window = tree_view->priv->bin_window;
12895           event.x = x - child_x;
12896           event.y = y - child_y;
12897
12898           /* despite the fact this isn't a real event, I'm almost positive it will
12899            * never trigger a drag event.  maybe_drag is the only function that uses
12900            * more than just event.x and event.y. */
12901           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12902         }
12903     }
12904
12905   return TRUE;
12906 }
12907
12908 /**
12909  * gtk_tree_view_collapse_row:
12910  * @tree_view: a #GtkTreeView
12911  * @path: path to a row in the @tree_view
12912  *
12913  * Collapses a row (hides its child rows, if they exist).
12914  *
12915  * Return value: %TRUE if the row was collapsed.
12916  **/
12917 gboolean
12918 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12919                             GtkTreePath *path)
12920 {
12921   GtkRBTree *tree;
12922   GtkRBNode *node;
12923
12924   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12925   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12926   g_return_val_if_fail (path != NULL, FALSE);
12927
12928   if (_gtk_tree_view_find_node (tree_view,
12929                                 path,
12930                                 &tree,
12931                                 &node))
12932     return FALSE;
12933
12934   if (tree == NULL || node->children == NULL)
12935     return FALSE;
12936
12937   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12938 }
12939
12940 static void
12941 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12942                                         GtkRBTree              *tree,
12943                                         GtkTreePath            *path,
12944                                         GtkTreeViewMappingFunc  func,
12945                                         gpointer                user_data)
12946 {
12947   GtkRBNode *node;
12948
12949   if (tree == NULL || tree->root == NULL)
12950     return;
12951
12952   node = tree->root;
12953
12954   while (node && node->left != tree->nil)
12955     node = node->left;
12956
12957   while (node)
12958     {
12959       if (node->children)
12960         {
12961           (* func) (tree_view, path, user_data);
12962           gtk_tree_path_down (path);
12963           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12964           gtk_tree_path_up (path);
12965         }
12966       gtk_tree_path_next (path);
12967       node = _gtk_rbtree_next (tree, node);
12968     }
12969 }
12970
12971 /**
12972  * gtk_tree_view_map_expanded_rows:
12973  * @tree_view: A #GtkTreeView
12974  * @func: (scope call): A function to be called
12975  * @data: User data to be passed to the function.
12976  *
12977  * Calls @func on all expanded rows.
12978  **/
12979 void
12980 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12981                                  GtkTreeViewMappingFunc  func,
12982                                  gpointer                user_data)
12983 {
12984   GtkTreePath *path;
12985
12986   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12987   g_return_if_fail (func != NULL);
12988
12989   path = gtk_tree_path_new_first ();
12990
12991   gtk_tree_view_map_expanded_rows_helper (tree_view,
12992                                           tree_view->priv->tree,
12993                                           path, func, user_data);
12994
12995   gtk_tree_path_free (path);
12996 }
12997
12998 /**
12999  * gtk_tree_view_row_expanded:
13000  * @tree_view: A #GtkTreeView.
13001  * @path: A #GtkTreePath to test expansion state.
13002  *
13003  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13004  *
13005  * Return value: %TRUE if #path is expanded.
13006  **/
13007 gboolean
13008 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13009                             GtkTreePath *path)
13010 {
13011   GtkRBTree *tree;
13012   GtkRBNode *node;
13013
13014   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13015   g_return_val_if_fail (path != NULL, FALSE);
13016
13017   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13018
13019   if (node == NULL)
13020     return FALSE;
13021
13022   return (node->children != NULL);
13023 }
13024
13025 /**
13026  * gtk_tree_view_get_reorderable:
13027  * @tree_view: a #GtkTreeView
13028  *
13029  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13030  * gtk_tree_view_set_reorderable().
13031  *
13032  * Return value: %TRUE if the tree can be reordered.
13033  **/
13034 gboolean
13035 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13036 {
13037   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13038
13039   return tree_view->priv->reorderable;
13040 }
13041
13042 /**
13043  * gtk_tree_view_set_reorderable:
13044  * @tree_view: A #GtkTreeView.
13045  * @reorderable: %TRUE, if the tree can be reordered.
13046  *
13047  * This function is a convenience function to allow you to reorder
13048  * models that support the #GtkDragSourceIface and the
13049  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13050  * these.  If @reorderable is %TRUE, then the user can reorder the
13051  * model by dragging and dropping rows. The developer can listen to
13052  * these changes by connecting to the model's row_inserted and
13053  * row_deleted signals. The reordering is implemented by setting up
13054  * the tree view as a drag source and destination. Therefore, drag and
13055  * drop can not be used in a reorderable view for any other purpose.
13056  *
13057  * This function does not give you any degree of control over the order -- any
13058  * reordering is allowed.  If more control is needed, you should probably
13059  * handle drag and drop manually.
13060  **/
13061 void
13062 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13063                                gboolean     reorderable)
13064 {
13065   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13066
13067   reorderable = reorderable != FALSE;
13068
13069   if (tree_view->priv->reorderable == reorderable)
13070     return;
13071
13072   if (reorderable)
13073     {
13074       const GtkTargetEntry row_targets[] = {
13075         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13076       };
13077
13078       gtk_tree_view_enable_model_drag_source (tree_view,
13079                                               GDK_BUTTON1_MASK,
13080                                               row_targets,
13081                                               G_N_ELEMENTS (row_targets),
13082                                               GDK_ACTION_MOVE);
13083       gtk_tree_view_enable_model_drag_dest (tree_view,
13084                                             row_targets,
13085                                             G_N_ELEMENTS (row_targets),
13086                                             GDK_ACTION_MOVE);
13087     }
13088   else
13089     {
13090       gtk_tree_view_unset_rows_drag_source (tree_view);
13091       gtk_tree_view_unset_rows_drag_dest (tree_view);
13092     }
13093
13094   tree_view->priv->reorderable = reorderable;
13095
13096   g_object_notify (G_OBJECT (tree_view), "reorderable");
13097 }
13098
13099 static void
13100 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13101                                GtkTreePath     *path,
13102                                gboolean         clear_and_select,
13103                                gboolean         clamp_node)
13104 {
13105   GtkRBTree *tree = NULL;
13106   GtkRBNode *node = NULL;
13107
13108   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13109     {
13110       GtkTreePath *cursor_path;
13111       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13112       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
13113       gtk_tree_path_free (cursor_path);
13114     }
13115
13116   gtk_tree_row_reference_free (tree_view->priv->cursor);
13117   tree_view->priv->cursor = NULL;
13118
13119   /* One cannot set the cursor on a separator.   Also, if
13120    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13121    * before finding the tree and node belonging to path.  The
13122    * path maps to a non-existing path and we will silently bail out.
13123    * We unset tree and node to avoid further processing.
13124    */
13125   if (!row_is_separator (tree_view, NULL, path)
13126       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
13127     {
13128       tree_view->priv->cursor =
13129           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
13130                                             tree_view->priv->model,
13131                                             path);
13132     }
13133   else
13134     {
13135       tree = NULL;
13136       node = NULL;
13137     }
13138
13139   if (tree != NULL)
13140     {
13141       GtkRBTree *new_tree = NULL;
13142       GtkRBNode *new_node = NULL;
13143
13144       if (clear_and_select && !tree_view->priv->ctrl_pressed)
13145         {
13146           GtkTreeSelectMode mode = 0;
13147
13148           if (tree_view->priv->ctrl_pressed)
13149             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
13150           if (tree_view->priv->shift_pressed)
13151             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13152
13153           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13154                                                     node, tree, path, mode,
13155                                                     FALSE);
13156         }
13157
13158       /* We have to re-find tree and node here again, somebody might have
13159        * cleared the node or the whole tree in the GtkTreeSelection::changed
13160        * callback. If the nodes differ we bail out here.
13161        */
13162       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13163
13164       if (tree != new_tree || node != new_node)
13165         return;
13166
13167       if (clamp_node)
13168         {
13169           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
13170           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13171         }
13172     }
13173
13174   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13175 }
13176
13177 /**
13178  * gtk_tree_view_get_cursor:
13179  * @tree_view: A #GtkTreeView
13180  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13181  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13182  *
13183  * Fills in @path and @focus_column with the current path and focus column.  If
13184  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13185  * currently has focus, then *@focus_column will be %NULL.
13186  *
13187  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13188  * you are done with it.
13189  **/
13190 void
13191 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13192                           GtkTreePath       **path,
13193                           GtkTreeViewColumn **focus_column)
13194 {
13195   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13196
13197   if (path)
13198     {
13199       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13200         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13201       else
13202         *path = NULL;
13203     }
13204
13205   if (focus_column)
13206     {
13207       *focus_column = tree_view->priv->focus_column;
13208     }
13209 }
13210
13211 /**
13212  * gtk_tree_view_set_cursor:
13213  * @tree_view: A #GtkTreeView
13214  * @path: A #GtkTreePath
13215  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13216  * @start_editing: %TRUE if the specified cell should start being edited.
13217  *
13218  * Sets the current keyboard focus to be at @path, and selects it.  This is
13219  * useful when you want to focus the user's attention on a particular row.  If
13220  * @focus_column is not %NULL, then focus is given to the column specified by
13221  * it. Additionally, if @focus_column is specified, and @start_editing is
13222  * %TRUE, then editing should be started in the specified cell.
13223  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13224  * in order to give keyboard focus to the widget.  Please note that editing
13225  * can only happen when the widget is realized.
13226  *
13227  * If @path is invalid for @model, the current cursor (if any) will be unset
13228  * and the function will return without failing.
13229  **/
13230 void
13231 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13232                           GtkTreePath       *path,
13233                           GtkTreeViewColumn *focus_column,
13234                           gboolean           start_editing)
13235 {
13236   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13237                                     NULL, start_editing);
13238 }
13239
13240 /**
13241  * gtk_tree_view_set_cursor_on_cell:
13242  * @tree_view: A #GtkTreeView
13243  * @path: A #GtkTreePath
13244  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13245  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13246  * @start_editing: %TRUE if the specified cell should start being edited.
13247  *
13248  * Sets the current keyboard focus to be at @path, and selects it.  This is
13249  * useful when you want to focus the user's attention on a particular row.  If
13250  * @focus_column is not %NULL, then focus is given to the column specified by
13251  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13252  * contains 2 or more editable or activatable cells, then focus is given to
13253  * the cell specified by @focus_cell. Additionally, if @focus_column is
13254  * specified, and @start_editing is %TRUE, then editing should be started in
13255  * the specified cell.  This function is often followed by
13256  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13257  * widget.  Please note that editing can only happen when the widget is
13258  * realized.
13259  *
13260  * If @path is invalid for @model, the current cursor (if any) will be unset
13261  * and the function will return without failing.
13262  *
13263  * Since: 2.2
13264  **/
13265 void
13266 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13267                                   GtkTreePath       *path,
13268                                   GtkTreeViewColumn *focus_column,
13269                                   GtkCellRenderer   *focus_cell,
13270                                   gboolean           start_editing)
13271 {
13272   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13273   g_return_if_fail (path != NULL);
13274   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13275
13276   if (!tree_view->priv->model)
13277     return;
13278
13279   if (focus_cell)
13280     {
13281       g_return_if_fail (focus_column);
13282       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13283     }
13284
13285   /* cancel the current editing, if it exists */
13286   if (tree_view->priv->edited_column &&
13287       gtk_cell_area_get_edit_widget
13288       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13289     gtk_tree_view_stop_editing (tree_view, TRUE);
13290
13291   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
13292
13293   if (focus_column &&
13294       gtk_tree_view_column_get_visible (focus_column))
13295     {
13296       GList *list;
13297       gboolean column_in_tree = FALSE;
13298
13299       for (list = tree_view->priv->columns; list; list = list->next)
13300         if (list->data == focus_column)
13301           {
13302             column_in_tree = TRUE;
13303             break;
13304           }
13305       g_return_if_fail (column_in_tree);
13306       tree_view->priv->focus_column = focus_column;
13307       if (focus_cell)
13308         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13309       if (start_editing)
13310         gtk_tree_view_start_editing (tree_view, path, TRUE);
13311     }
13312 }
13313
13314 /**
13315  * gtk_tree_view_get_bin_window:
13316  * @tree_view: A #GtkTreeView
13317  *
13318  * Returns the window that @tree_view renders to.
13319  * This is used primarily to compare to <literal>event->window</literal>
13320  * to confirm that the event on @tree_view is on the right window.
13321  *
13322  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13323  *     hasn't been realized yet
13324  **/
13325 GdkWindow *
13326 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13327 {
13328   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13329
13330   return tree_view->priv->bin_window;
13331 }
13332
13333 /**
13334  * gtk_tree_view_get_path_at_pos:
13335  * @tree_view: A #GtkTreeView.
13336  * @x: The x position to be identified (relative to bin_window).
13337  * @y: The y position to be identified (relative to bin_window).
13338  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13339  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13340  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13341  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13342  *
13343  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13344  * (please see gtk_tree_view_get_bin_window()).
13345  * That is, @x and @y are relative to an events coordinates. @x and @y must
13346  * come from an event on the @tree_view only where <literal>event->window ==
13347  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13348  * things like popup menus. If @path is non-%NULL, then it will be filled
13349  * with the #GtkTreePath at that point.  This path should be freed with
13350  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13351  * with the column at that point.  @cell_x and @cell_y return the coordinates
13352  * relative to the cell background (i.e. the @background_area passed to
13353  * gtk_cell_renderer_render()).  This function is only meaningful if
13354  * @tree_view is realized.  Therefore this function will always return %FALSE
13355  * if @tree_view is not realized or does not have a model.
13356  *
13357  * For converting widget coordinates (eg. the ones you get from
13358  * GtkWidget::query-tooltip), please see
13359  * gtk_tree_view_convert_widget_to_bin_window_coords().
13360  *
13361  * Return value: %TRUE if a row exists at that coordinate.
13362  **/
13363 gboolean
13364 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13365                                gint                x,
13366                                gint                y,
13367                                GtkTreePath       **path,
13368                                GtkTreeViewColumn **column,
13369                                gint               *cell_x,
13370                                gint               *cell_y)
13371 {
13372   GtkRBTree *tree;
13373   GtkRBNode *node;
13374   gint y_offset;
13375
13376   g_return_val_if_fail (tree_view != NULL, FALSE);
13377
13378   if (path)
13379     *path = NULL;
13380   if (column)
13381     *column = NULL;
13382
13383   if (tree_view->priv->bin_window == NULL)
13384     return FALSE;
13385
13386   if (tree_view->priv->tree == NULL)
13387     return FALSE;
13388
13389   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13390     return FALSE;
13391
13392   if (x < 0 || y < 0)
13393     return FALSE;
13394
13395   if (column || cell_x)
13396     {
13397       GtkTreeViewColumn *tmp_column;
13398       GtkTreeViewColumn *last_column = NULL;
13399       GList *list;
13400       gint remaining_x = x;
13401       gboolean found = FALSE;
13402       gboolean rtl;
13403       gint width;
13404
13405       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13406       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13407            list;
13408            list = (rtl ? list->prev : list->next))
13409         {
13410           tmp_column = list->data;
13411
13412           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13413             continue;
13414
13415           last_column = tmp_column;
13416           width = gtk_tree_view_column_get_width (tmp_column);
13417           if (remaining_x <= width)
13418             {
13419               found = TRUE;
13420
13421               if (column)
13422                 *column = tmp_column;
13423
13424               if (cell_x)
13425                 *cell_x = remaining_x;
13426
13427               break;
13428             }
13429           remaining_x -= width;
13430         }
13431
13432       /* If found is FALSE and there is a last_column, then it the remainder
13433        * space is in that area
13434        */
13435       if (!found)
13436         {
13437           if (last_column)
13438             {
13439               if (column)
13440                 *column = last_column;
13441
13442               if (cell_x)
13443                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13444             }
13445           else
13446             {
13447               return FALSE;
13448             }
13449         }
13450     }
13451
13452   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13453                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13454                                       &tree, &node);
13455
13456   if (tree == NULL)
13457     return FALSE;
13458
13459   if (cell_y)
13460     *cell_y = y_offset;
13461
13462   if (path)
13463     *path = _gtk_tree_view_find_path (tree_view, tree, node);
13464
13465   return TRUE;
13466 }
13467
13468
13469 static inline gint
13470 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13471                                     GtkRBNode   *node,
13472                                     gint         vertical_separator)
13473 {
13474   int height;
13475
13476   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13477    * i.e. just the cells, no spacing.
13478    *
13479    * The cell area height is at least expander_size - vertical_separator.
13480    * For regular nodes, the height is then at least expander_size. We should
13481    * be able to enforce the expander_size minimum here, because this
13482    * function will not be called for irregular (e.g. separator) rows.
13483    */
13484   height = gtk_tree_view_get_row_height (tree_view, node);
13485   if (height < tree_view->priv->expander_size)
13486     height = tree_view->priv->expander_size;
13487
13488   return height - vertical_separator;
13489 }
13490
13491 static inline gint
13492 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13493                                       GtkRBTree   *tree,
13494                                       GtkRBNode   *node,
13495                                       gint         vertical_separator)
13496 {
13497   int offset;
13498
13499   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13500   offset += vertical_separator / 2;
13501
13502   return offset;
13503 }
13504
13505 /**
13506  * gtk_tree_view_get_cell_area:
13507  * @tree_view: a #GtkTreeView
13508  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13509  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13510  * @rect: (out): rectangle to fill with cell rect
13511  *
13512  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13513  * row specified by @path and the column specified by @column.  If @path is
13514  * %NULL, or points to a path not currently displayed, the @y and @height fields
13515  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13516  * fields will be filled with 0.  The sum of all cell rects does not cover the
13517  * entire tree; there are extra pixels in between rows, for example. The
13518  * returned rectangle is equivalent to the @cell_area passed to
13519  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13520  * realized.
13521  **/
13522 void
13523 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13524                              GtkTreePath        *path,
13525                              GtkTreeViewColumn  *column,
13526                              GdkRectangle       *rect)
13527 {
13528   GtkAllocation allocation;
13529   GtkRBTree *tree = NULL;
13530   GtkRBNode *node = NULL;
13531   gint vertical_separator;
13532   gint horizontal_separator;
13533
13534   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13535   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13536   g_return_if_fail (rect != NULL);
13537   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13538   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13539
13540   gtk_widget_style_get (GTK_WIDGET (tree_view),
13541                         "vertical-separator", &vertical_separator,
13542                         "horizontal-separator", &horizontal_separator,
13543                         NULL);
13544
13545   rect->x = 0;
13546   rect->y = 0;
13547   rect->width = 0;
13548   rect->height = 0;
13549
13550   if (column)
13551     {
13552       gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
13553       rect->x = allocation.x + horizontal_separator/2;
13554       rect->width = allocation.width - horizontal_separator;
13555     }
13556
13557   if (path)
13558     {
13559       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13560
13561       /* Get vertical coords */
13562       if ((!ret && tree == NULL) || ret)
13563         return;
13564
13565       if (row_is_separator (tree_view, NULL, path))
13566         {
13567           /* There isn't really a "cell area" for separator, so we
13568            * return the y, height values for background area instead.
13569            */
13570           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13571           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13572         }
13573       else
13574         {
13575           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13576                                                           vertical_separator);
13577           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13578                                                              vertical_separator);
13579         }
13580
13581       if (column &&
13582           gtk_tree_view_is_expander_column (tree_view, column))
13583         {
13584           gint depth = gtk_tree_path_get_depth (path);
13585           gboolean rtl;
13586
13587           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13588
13589           if (!rtl)
13590             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13591           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13592
13593           if (gtk_tree_view_draw_expanders (tree_view))
13594             {
13595               if (!rtl)
13596                 rect->x += depth * tree_view->priv->expander_size;
13597               rect->width -= depth * tree_view->priv->expander_size;
13598             }
13599
13600           rect->width = MAX (rect->width, 0);
13601         }
13602     }
13603 }
13604
13605 static inline gint
13606 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13607                               GtkRBNode   *node)
13608 {
13609   int height;
13610
13611   /* The "background" areas of all rows/cells add up to cover the entire tree.
13612    * The background includes all inter-row and inter-cell spacing.
13613    *
13614    * If the row pointed at by node does not have a height set, we default
13615    * to expander_size, which is the minimum height for regular nodes.
13616    * Non-regular nodes (e.g. separators) can have a height set smaller
13617    * than expander_size and should not be overruled here.
13618    */
13619   height = GTK_RBNODE_GET_HEIGHT (node);
13620   if (height <= 0)
13621     height = tree_view->priv->expander_size;
13622
13623   return height;
13624 }
13625
13626 static inline gint
13627 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13628                                 GtkRBTree   *tree,
13629                                 GtkRBNode   *node)
13630 {
13631   int offset;
13632
13633   offset = _gtk_rbtree_node_find_offset (tree, node);
13634
13635   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13636 }
13637
13638 /**
13639  * gtk_tree_view_get_background_area:
13640  * @tree_view: a #GtkTreeView
13641  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13642  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13643  * @rect: (out): rectangle to fill with cell background rect
13644  *
13645  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13646  * row specified by @path and the column specified by @column.  If @path is
13647  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13648  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13649  * fields will be filled with 0.  The returned rectangle is equivalent to the
13650  * @background_area passed to gtk_cell_renderer_render().  These background
13651  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13652  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13653  * itself, excluding surrounding borders and the tree expander area.
13654  *
13655  **/
13656 void
13657 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13658                                    GtkTreePath        *path,
13659                                    GtkTreeViewColumn  *column,
13660                                    GdkRectangle       *rect)
13661 {
13662   GtkRBTree *tree = NULL;
13663   GtkRBNode *node = NULL;
13664
13665   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13666   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13667   g_return_if_fail (rect != NULL);
13668
13669   rect->x = 0;
13670   rect->y = 0;
13671   rect->width = 0;
13672   rect->height = 0;
13673
13674   if (path)
13675     {
13676       /* Get vertical coords */
13677
13678       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13679           tree == NULL)
13680         return;
13681
13682       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13683       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13684     }
13685
13686   if (column)
13687     {
13688       gint x2 = 0;
13689
13690       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13691       rect->width = x2 - rect->x;
13692     }
13693 }
13694
13695 /**
13696  * gtk_tree_view_get_visible_rect:
13697  * @tree_view: a #GtkTreeView
13698  * @visible_rect: (out): rectangle to fill
13699  *
13700  * Fills @visible_rect with the currently-visible region of the
13701  * buffer, in tree coordinates. Convert to bin_window coordinates with
13702  * gtk_tree_view_convert_tree_to_bin_window_coords().
13703  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13704  * scrollable area of the tree.
13705  **/
13706 void
13707 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13708                                 GdkRectangle *visible_rect)
13709 {
13710   GtkAllocation allocation;
13711   GtkWidget *widget;
13712
13713   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13714
13715   widget = GTK_WIDGET (tree_view);
13716
13717   if (visible_rect)
13718     {
13719       gtk_widget_get_allocation (widget, &allocation);
13720       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13721       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13722       visible_rect->width = allocation.width;
13723       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13724     }
13725 }
13726
13727 /**
13728  * gtk_tree_view_convert_widget_to_tree_coords:
13729  * @tree_view: a #GtkTreeView
13730  * @wx: X coordinate relative to the widget
13731  * @wy: Y coordinate relative to the widget
13732  * @tx: (out): return location for tree X coordinate
13733  * @ty: (out): return location for tree Y coordinate
13734  *
13735  * Converts widget coordinates to coordinates for the
13736  * tree (the full scrollable area of the tree).
13737  *
13738  * Since: 2.12
13739  **/
13740 void
13741 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13742                                              gint         wx,
13743                                              gint         wy,
13744                                              gint        *tx,
13745                                              gint        *ty)
13746 {
13747   gint x, y;
13748
13749   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13750
13751   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13752                                                      wx, wy,
13753                                                      &x, &y);
13754   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13755                                                    x, y,
13756                                                    tx, ty);
13757 }
13758
13759 /**
13760  * gtk_tree_view_convert_tree_to_widget_coords:
13761  * @tree_view: a #GtkTreeView
13762  * @tx: X coordinate relative to the tree
13763  * @ty: Y coordinate relative to the tree
13764  * @wx: (out): return location for widget X coordinate
13765  * @wy: (out): return location for widget Y coordinate
13766  *
13767  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13768  * to widget coordinates.
13769  *
13770  * Since: 2.12
13771  **/
13772 void
13773 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13774                                              gint         tx,
13775                                              gint         ty,
13776                                              gint        *wx,
13777                                              gint        *wy)
13778 {
13779   gint x, y;
13780
13781   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13782
13783   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13784                                                    tx, ty,
13785                                                    &x, &y);
13786   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13787                                                      x, y,
13788                                                      wx, wy);
13789 }
13790
13791 /**
13792  * gtk_tree_view_convert_widget_to_bin_window_coords:
13793  * @tree_view: a #GtkTreeView
13794  * @wx: X coordinate relative to the widget
13795  * @wy: Y coordinate relative to the widget
13796  * @bx: (out): return location for bin_window X coordinate
13797  * @by: (out): return location for bin_window Y coordinate
13798  *
13799  * Converts widget coordinates to coordinates for the bin_window
13800  * (see gtk_tree_view_get_bin_window()).
13801  *
13802  * Since: 2.12
13803  **/
13804 void
13805 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13806                                                    gint         wx,
13807                                                    gint         wy,
13808                                                    gint        *bx,
13809                                                    gint        *by)
13810 {
13811   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13812
13813   if (bx)
13814     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13815   if (by)
13816     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13817 }
13818
13819 /**
13820  * gtk_tree_view_convert_bin_window_to_widget_coords:
13821  * @tree_view: a #GtkTreeView
13822  * @bx: bin_window X coordinate
13823  * @by: bin_window Y coordinate
13824  * @wx: (out): return location for widget X coordinate
13825  * @wy: (out): return location for widget Y coordinate
13826  *
13827  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13828  * to widget relative coordinates.
13829  *
13830  * Since: 2.12
13831  **/
13832 void
13833 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13834                                                    gint         bx,
13835                                                    gint         by,
13836                                                    gint        *wx,
13837                                                    gint        *wy)
13838 {
13839   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13840
13841   if (wx)
13842     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13843   if (wy)
13844     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13845 }
13846
13847 /**
13848  * gtk_tree_view_convert_tree_to_bin_window_coords:
13849  * @tree_view: a #GtkTreeView
13850  * @tx: tree X coordinate
13851  * @ty: tree Y coordinate
13852  * @bx: (out): return location for X coordinate relative to bin_window
13853  * @by: (out): return location for Y coordinate relative to bin_window
13854  *
13855  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13856  * to bin_window coordinates.
13857  *
13858  * Since: 2.12
13859  **/
13860 void
13861 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13862                                                  gint         tx,
13863                                                  gint         ty,
13864                                                  gint        *bx,
13865                                                  gint        *by)
13866 {
13867   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13868
13869   if (bx)
13870     *bx = tx;
13871   if (by)
13872     *by = ty - tree_view->priv->dy;
13873 }
13874
13875 /**
13876  * gtk_tree_view_convert_bin_window_to_tree_coords:
13877  * @tree_view: a #GtkTreeView
13878  * @bx: X coordinate relative to bin_window
13879  * @by: Y coordinate relative to bin_window
13880  * @tx: (out): return location for tree X coordinate
13881  * @ty: (out): return location for tree Y coordinate
13882  *
13883  * Converts bin_window coordinates to coordinates for the
13884  * tree (the full scrollable area of the tree).
13885  *
13886  * Since: 2.12
13887  **/
13888 void
13889 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13890                                                  gint         bx,
13891                                                  gint         by,
13892                                                  gint        *tx,
13893                                                  gint        *ty)
13894 {
13895   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13896
13897   if (tx)
13898     *tx = bx;
13899   if (ty)
13900     *ty = by + tree_view->priv->dy;
13901 }
13902
13903
13904
13905 /**
13906  * gtk_tree_view_get_visible_range:
13907  * @tree_view: A #GtkTreeView
13908  * @start_path: (out) (allow-none): Return location for start of region,
13909  *              or %NULL.
13910  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13911  *
13912  * Sets @start_path and @end_path to be the first and last visible path.
13913  * Note that there may be invisible paths in between.
13914  *
13915  * The paths should be freed with gtk_tree_path_free() after use.
13916  *
13917  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13918  *
13919  * Since: 2.8
13920  **/
13921 gboolean
13922 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13923                                  GtkTreePath **start_path,
13924                                  GtkTreePath **end_path)
13925 {
13926   GtkRBTree *tree;
13927   GtkRBNode *node;
13928   gboolean retval;
13929
13930   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13931
13932   if (!tree_view->priv->tree)
13933     return FALSE;
13934
13935   retval = TRUE;
13936
13937   if (start_path)
13938     {
13939       _gtk_rbtree_find_offset (tree_view->priv->tree,
13940                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13941                                &tree, &node);
13942       if (node)
13943         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13944       else
13945         retval = FALSE;
13946     }
13947
13948   if (end_path)
13949     {
13950       gint y;
13951
13952       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
13953         y = tree_view->priv->height - 1;
13954       else
13955         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
13956
13957       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13958       if (node)
13959         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13960       else
13961         retval = FALSE;
13962     }
13963
13964   return retval;
13965 }
13966
13967 /**
13968  * gtk_tree_view_is_blank_at_pos:
13969  * @tree_view: A #GtkTreeView
13970  * @x: The x position to be identified (relative to bin_window)
13971  * @y: The y position to be identified (relative to bin_window)
13972  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13973  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13974  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13975  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13976  *
13977  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
13978  * cell content nor an expander arrow is drawn at the location. If so, the
13979  * location can be considered as the background. You might wish to take
13980  * special action on clicks on the background, such as clearing a current
13981  * selection, having a custom context menu or starting rubber banding.
13982  *
13983  * The @x and @y coordinate that are provided must be relative to bin_window
13984  * coordinates.  That is, @x and @y must come from an event on @tree_view
13985  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
13986  *
13987  * For converting widget coordinates (eg. the ones you get from
13988  * GtkWidget::query-tooltip), please see
13989  * gtk_tree_view_convert_widget_to_bin_window_coords().
13990  *
13991  * The @path, @column, @cell_x and @cell_y arguments will be filled in
13992  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
13993  * gtk_tree_view_get_path_at_pos() for more information.
13994  *
13995  * Return value: %TRUE if the area at the given coordinates is blank,
13996  * %FALSE otherwise.
13997  *
13998  * Since: 3.0
13999  */
14000 gboolean
14001 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14002                                gint                x,
14003                                gint                y,
14004                                GtkTreePath       **path,
14005                                GtkTreeViewColumn **column,
14006                                gint               *cell_x,
14007                                gint               *cell_y)
14008 {
14009   GtkRBTree *tree;
14010   GtkRBNode *node;
14011   GtkTreeIter iter;
14012   GtkTreePath *real_path;
14013   GtkTreeViewColumn *real_column;
14014   GdkRectangle cell_area, background_area;
14015
14016   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14017
14018   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14019                                       &real_path, &real_column,
14020                                       cell_x, cell_y))
14021     /* If there's no path here, it is blank */
14022     return TRUE;
14023
14024   if (path)
14025     *path = real_path;
14026
14027   if (column)
14028     *column = real_column;
14029
14030   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14031   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14032
14033   /* Check if there's an expander arrow at (x, y) */
14034   if (real_column == tree_view->priv->expander_column
14035       && gtk_tree_view_draw_expanders (tree_view))
14036     {
14037       gboolean over_arrow;
14038
14039       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14040
14041       if (over_arrow)
14042         {
14043           if (!path)
14044             gtk_tree_path_free (real_path);
14045           return FALSE;
14046         }
14047     }
14048
14049   /* Otherwise, have the column see if there's a cell at (x, y) */
14050   gtk_tree_view_column_cell_set_cell_data (real_column,
14051                                            tree_view->priv->model,
14052                                            &iter,
14053                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14054                                            node->children ? TRUE : FALSE);
14055
14056   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14057                                      &background_area);
14058   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14059                                &cell_area);
14060
14061   if (!path)
14062     gtk_tree_path_free (real_path);
14063
14064   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14065                                                 &cell_area,
14066                                                 &background_area,
14067                                                 x, y);
14068 }
14069
14070 static void
14071 unset_reorderable (GtkTreeView *tree_view)
14072 {
14073   if (tree_view->priv->reorderable)
14074     {
14075       tree_view->priv->reorderable = FALSE;
14076       g_object_notify (G_OBJECT (tree_view), "reorderable");
14077     }
14078 }
14079
14080 /**
14081  * gtk_tree_view_enable_model_drag_source:
14082  * @tree_view: a #GtkTreeView
14083  * @start_button_mask: Mask of allowed buttons to start drag
14084  * @targets: (array length=n_targets): the table of targets that the drag will support
14085  * @n_targets: the number of items in @targets
14086  * @actions: the bitmask of possible actions for a drag from this
14087  *    widget
14088  *
14089  * Turns @tree_view into a drag source for automatic DND. Calling this
14090  * method sets #GtkTreeView:reorderable to %FALSE.
14091  **/
14092 void
14093 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14094                                         GdkModifierType           start_button_mask,
14095                                         const GtkTargetEntry     *targets,
14096                                         gint                      n_targets,
14097                                         GdkDragAction             actions)
14098 {
14099   TreeViewDragInfo *di;
14100
14101   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14102
14103   gtk_drag_source_set (GTK_WIDGET (tree_view),
14104                        0,
14105                        targets,
14106                        n_targets,
14107                        actions);
14108
14109   di = ensure_info (tree_view);
14110
14111   di->start_button_mask = start_button_mask;
14112   di->source_actions = actions;
14113   di->source_set = TRUE;
14114
14115   unset_reorderable (tree_view);
14116 }
14117
14118 /**
14119  * gtk_tree_view_enable_model_drag_dest:
14120  * @tree_view: a #GtkTreeView
14121  * @targets: (array length=n_targets): the table of targets that
14122  *           the drag will support
14123  * @n_targets: the number of items in @targets
14124  * @actions: the bitmask of possible actions for a drag from this
14125  *    widget
14126  *
14127  * Turns @tree_view into a drop destination for automatic DND. Calling
14128  * this method sets #GtkTreeView:reorderable to %FALSE.
14129  **/
14130 void
14131 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14132                                       const GtkTargetEntry     *targets,
14133                                       gint                      n_targets,
14134                                       GdkDragAction             actions)
14135 {
14136   TreeViewDragInfo *di;
14137
14138   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14139
14140   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14141                      0,
14142                      targets,
14143                      n_targets,
14144                      actions);
14145
14146   di = ensure_info (tree_view);
14147   di->dest_set = TRUE;
14148
14149   unset_reorderable (tree_view);
14150 }
14151
14152 /**
14153  * gtk_tree_view_unset_rows_drag_source:
14154  * @tree_view: a #GtkTreeView
14155  *
14156  * Undoes the effect of
14157  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14158  * #GtkTreeView:reorderable to %FALSE.
14159  **/
14160 void
14161 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14162 {
14163   TreeViewDragInfo *di;
14164
14165   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14166
14167   di = get_info (tree_view);
14168
14169   if (di)
14170     {
14171       if (di->source_set)
14172         {
14173           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14174           di->source_set = FALSE;
14175         }
14176
14177       if (!di->dest_set && !di->source_set)
14178         remove_info (tree_view);
14179     }
14180
14181   unset_reorderable (tree_view);
14182 }
14183
14184 /**
14185  * gtk_tree_view_unset_rows_drag_dest:
14186  * @tree_view: a #GtkTreeView
14187  *
14188  * Undoes the effect of
14189  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14190  * #GtkTreeView:reorderable to %FALSE.
14191  **/
14192 void
14193 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14194 {
14195   TreeViewDragInfo *di;
14196
14197   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14198
14199   di = get_info (tree_view);
14200
14201   if (di)
14202     {
14203       if (di->dest_set)
14204         {
14205           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14206           di->dest_set = FALSE;
14207         }
14208
14209       if (!di->dest_set && !di->source_set)
14210         remove_info (tree_view);
14211     }
14212
14213   unset_reorderable (tree_view);
14214 }
14215
14216 /**
14217  * gtk_tree_view_set_drag_dest_row:
14218  * @tree_view: a #GtkTreeView
14219  * @path: (allow-none): The path of the row to highlight, or %NULL.
14220  * @pos: Specifies whether to drop before, after or into the row
14221  *
14222  * Sets the row that is highlighted for feedback.
14223  **/
14224 void
14225 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14226                                  GtkTreePath            *path,
14227                                  GtkTreeViewDropPosition pos)
14228 {
14229   GtkTreePath *current_dest;
14230
14231   /* Note; this function is exported to allow a custom DND
14232    * implementation, so it can't touch TreeViewDragInfo
14233    */
14234
14235   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14236
14237   current_dest = NULL;
14238
14239   if (tree_view->priv->drag_dest_row)
14240     {
14241       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14242       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14243     }
14244
14245   /* special case a drop on an empty model */
14246   tree_view->priv->empty_view_drop = 0;
14247
14248   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14249       && gtk_tree_path_get_depth (path) == 1
14250       && gtk_tree_path_get_indices (path)[0] == 0)
14251     {
14252       gint n_children;
14253
14254       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14255                                                    NULL);
14256
14257       if (!n_children)
14258         tree_view->priv->empty_view_drop = 1;
14259     }
14260
14261   tree_view->priv->drag_dest_pos = pos;
14262
14263   if (path)
14264     {
14265       tree_view->priv->drag_dest_row =
14266         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14267       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14268     }
14269   else
14270     tree_view->priv->drag_dest_row = NULL;
14271
14272   if (current_dest)
14273     {
14274       GtkRBTree *tree, *new_tree;
14275       GtkRBNode *node, *new_node;
14276
14277       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14278       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14279
14280       if (tree && node)
14281         {
14282           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14283           if (new_tree && new_node)
14284             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14285
14286           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14287           if (new_tree && new_node)
14288             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14289         }
14290       gtk_tree_path_free (current_dest);
14291     }
14292 }
14293
14294 /**
14295  * gtk_tree_view_get_drag_dest_row:
14296  * @tree_view: a #GtkTreeView
14297  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14298  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14299  *
14300  * Gets information about the row that is highlighted for feedback.
14301  **/
14302 void
14303 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14304                                  GtkTreePath             **path,
14305                                  GtkTreeViewDropPosition  *pos)
14306 {
14307   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14308
14309   if (path)
14310     {
14311       if (tree_view->priv->drag_dest_row)
14312         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14313       else
14314         {
14315           if (tree_view->priv->empty_view_drop)
14316             *path = gtk_tree_path_new_from_indices (0, -1);
14317           else
14318             *path = NULL;
14319         }
14320     }
14321
14322   if (pos)
14323     *pos = tree_view->priv->drag_dest_pos;
14324 }
14325
14326 /**
14327  * gtk_tree_view_get_dest_row_at_pos:
14328  * @tree_view: a #GtkTreeView
14329  * @drag_x: the position to determine the destination row for
14330  * @drag_y: the position to determine the destination row for
14331  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14332  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14333  *
14334  * Determines the destination row for a given position.  @drag_x and
14335  * @drag_y are expected to be in widget coordinates.  This function is only
14336  * meaningful if @tree_view is realized.  Therefore this function will always
14337  * return %FALSE if @tree_view is not realized or does not have a model.
14338  *
14339  * Return value: whether there is a row at the given position, %TRUE if this
14340  * is indeed the case.
14341  **/
14342 gboolean
14343 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14344                                    gint                     drag_x,
14345                                    gint                     drag_y,
14346                                    GtkTreePath            **path,
14347                                    GtkTreeViewDropPosition *pos)
14348 {
14349   gint cell_y;
14350   gint bin_x, bin_y;
14351   gdouble offset_into_row;
14352   gdouble third;
14353   GdkRectangle cell;
14354   GtkTreeViewColumn *column = NULL;
14355   GtkTreePath *tmp_path = NULL;
14356
14357   /* Note; this function is exported to allow a custom DND
14358    * implementation, so it can't touch TreeViewDragInfo
14359    */
14360
14361   g_return_val_if_fail (tree_view != NULL, FALSE);
14362   g_return_val_if_fail (drag_x >= 0, FALSE);
14363   g_return_val_if_fail (drag_y >= 0, FALSE);
14364
14365   if (path)
14366     *path = NULL;
14367
14368   if (tree_view->priv->bin_window == NULL)
14369     return FALSE;
14370
14371   if (tree_view->priv->tree == NULL)
14372     return FALSE;
14373
14374   /* If in the top third of a row, we drop before that row; if
14375    * in the bottom third, drop after that row; if in the middle,
14376    * and the row has children, drop into the row.
14377    */
14378   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14379                                                      &bin_x, &bin_y);
14380
14381   if (!gtk_tree_view_get_path_at_pos (tree_view,
14382                                       bin_x,
14383                                       bin_y,
14384                                       &tmp_path,
14385                                       &column,
14386                                       NULL,
14387                                       &cell_y))
14388     return FALSE;
14389
14390   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14391                                      &cell);
14392
14393   offset_into_row = cell_y;
14394
14395   if (path)
14396     *path = tmp_path;
14397   else
14398     gtk_tree_path_free (tmp_path);
14399
14400   tmp_path = NULL;
14401
14402   third = cell.height / 3.0;
14403
14404   if (pos)
14405     {
14406       if (offset_into_row < third)
14407         {
14408           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14409         }
14410       else if (offset_into_row < (cell.height / 2.0))
14411         {
14412           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14413         }
14414       else if (offset_into_row < third * 2.0)
14415         {
14416           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14417         }
14418       else
14419         {
14420           *pos = GTK_TREE_VIEW_DROP_AFTER;
14421         }
14422     }
14423
14424   return TRUE;
14425 }
14426
14427
14428
14429 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14430 /**
14431  * gtk_tree_view_create_row_drag_icon:
14432  * @tree_view: a #GtkTreeView
14433  * @path: a #GtkTreePath in @tree_view
14434  *
14435  * Creates a #cairo_surface_t representation of the row at @path.
14436  * This image is used for a drag icon.
14437  *
14438  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14439  **/
14440 cairo_surface_t *
14441 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14442                                     GtkTreePath  *path)
14443 {
14444   GtkTreeIter   iter;
14445   GtkRBTree    *tree;
14446   GtkRBNode    *node;
14447   GtkStyleContext *context;
14448   GtkStateFlags state;
14449   gint cell_offset;
14450   GList *list;
14451   GdkRectangle background_area;
14452   GtkWidget *widget;
14453   gint depth;
14454   /* start drawing inside the black outline */
14455   gint x = 1, y = 1;
14456   cairo_surface_t *surface;
14457   gint bin_window_width;
14458   gboolean is_separator = FALSE;
14459   gboolean rtl, allow_rules;
14460   cairo_t *cr;
14461
14462   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14463   g_return_val_if_fail (path != NULL, NULL);
14464
14465   widget = GTK_WIDGET (tree_view);
14466
14467   if (!gtk_widget_get_realized (widget))
14468     return NULL;
14469
14470   depth = gtk_tree_path_get_depth (path);
14471
14472   _gtk_tree_view_find_node (tree_view,
14473                             path,
14474                             &tree,
14475                             &node);
14476
14477   if (tree == NULL)
14478     return NULL;
14479
14480   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14481                                 &iter,
14482                                 path))
14483     return NULL;
14484
14485   context = gtk_widget_get_style_context (widget);
14486
14487   gtk_style_context_save (context);
14488
14489   state = gtk_widget_get_state_flags (widget);
14490   gtk_style_context_set_state (context, state);
14491
14492   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14493   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14494
14495   gtk_widget_style_get (widget,
14496                         "allow-rules", &allow_rules,
14497                         NULL);
14498
14499   if (allow_rules && tree_view->priv->has_rules)
14500     {
14501       GtkRegionFlags row_flags;
14502
14503       if (_gtk_rbtree_node_find_parity (tree, node))
14504         row_flags = GTK_REGION_ODD;
14505       else
14506         row_flags = GTK_REGION_EVEN;
14507
14508       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14509     }
14510
14511   is_separator = row_is_separator (tree_view, &iter, NULL);
14512
14513   cell_offset = x;
14514
14515   background_area.y = y;
14516   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14517
14518   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14519
14520   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14521                                                CAIRO_CONTENT_COLOR,
14522                                                bin_window_width + 2,
14523                                                background_area.height + 2);
14524
14525   cr = cairo_create (surface);
14526
14527   gtk_render_background (context, cr, 0, 0,
14528                          bin_window_width + 2,
14529                          background_area.height + 2);
14530
14531   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14532
14533   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14534       list;
14535       list = (rtl ? list->prev : list->next))
14536     {
14537       GtkTreeViewColumn *column = list->data;
14538       GdkRectangle cell_area;
14539       gint vertical_separator;
14540
14541       if (!gtk_tree_view_column_get_visible (column))
14542         continue;
14543
14544       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14545                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14546                                                node->children?TRUE:FALSE);
14547
14548       background_area.x = cell_offset;
14549       background_area.width = gtk_tree_view_column_get_width (column);
14550
14551       gtk_widget_style_get (widget,
14552                             "vertical-separator", &vertical_separator,
14553                             NULL);
14554
14555       cell_area = background_area;
14556
14557       cell_area.y += vertical_separator / 2;
14558       cell_area.height -= vertical_separator;
14559
14560       if (gtk_tree_view_is_expander_column (tree_view, column))
14561         {
14562           if (!rtl)
14563             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14564           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14565
14566           if (gtk_tree_view_draw_expanders (tree_view))
14567             {
14568               if (!rtl)
14569                 cell_area.x += depth * tree_view->priv->expander_size;
14570               cell_area.width -= depth * tree_view->priv->expander_size;
14571             }
14572         }
14573
14574       if (gtk_tree_view_column_cell_is_visible (column))
14575         {
14576           if (is_separator)
14577             gtk_render_line (context, cr,
14578                              cell_area.x,
14579                              cell_area.y + cell_area.height / 2,
14580                              cell_area.x + cell_area.width,
14581                              cell_area.y + cell_area.height / 2);
14582           else
14583             _gtk_tree_view_column_cell_render (column,
14584                                                cr,
14585                                                &background_area,
14586                                                &cell_area,
14587                                                0, FALSE);
14588         }
14589       cell_offset += gtk_tree_view_column_get_width (column);
14590     }
14591
14592   cairo_set_source_rgb (cr, 0, 0, 0);
14593   cairo_rectangle (cr,
14594                    0.5, 0.5,
14595                    bin_window_width + 1,
14596                    background_area.height + 1);
14597   cairo_set_line_width (cr, 1.0);
14598   cairo_stroke (cr);
14599
14600   cairo_destroy (cr);
14601
14602   cairo_surface_set_device_offset (surface, 2, 2);
14603
14604   gtk_style_context_restore (context);
14605
14606   return surface;
14607 }
14608
14609
14610 /**
14611  * gtk_tree_view_set_destroy_count_func:
14612  * @tree_view: A #GtkTreeView
14613  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14614  * @data: (allow-none): User data to be passed to @func, or %NULL
14615  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14616  *
14617  * This function should almost never be used.  It is meant for private use by
14618  * ATK for determining the number of visible children that are removed when the
14619  * user collapses a row, or a row is deleted.
14620  **/
14621 void
14622 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14623                                       GtkTreeDestroyCountFunc  func,
14624                                       gpointer                 data,
14625                                       GDestroyNotify           destroy)
14626 {
14627   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14628
14629   if (tree_view->priv->destroy_count_destroy)
14630     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14631
14632   tree_view->priv->destroy_count_func = func;
14633   tree_view->priv->destroy_count_data = data;
14634   tree_view->priv->destroy_count_destroy = destroy;
14635 }
14636
14637
14638 /*
14639  * Interactive search
14640  */
14641
14642 /**
14643  * gtk_tree_view_set_enable_search:
14644  * @tree_view: A #GtkTreeView
14645  * @enable_search: %TRUE, if the user can search interactively
14646  *
14647  * If @enable_search is set, then the user can type in text to search through
14648  * the tree interactively (this is sometimes called "typeahead find").
14649  *
14650  * Note that even if this is %FALSE, the user can still initiate a search
14651  * using the "start-interactive-search" key binding.
14652  */
14653 void
14654 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14655                                  gboolean     enable_search)
14656 {
14657   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14658
14659   enable_search = !!enable_search;
14660
14661   if (tree_view->priv->enable_search != enable_search)
14662     {
14663        tree_view->priv->enable_search = enable_search;
14664        g_object_notify (G_OBJECT (tree_view), "enable-search");
14665     }
14666 }
14667
14668 /**
14669  * gtk_tree_view_get_enable_search:
14670  * @tree_view: A #GtkTreeView
14671  *
14672  * Returns whether or not the tree allows to start interactive searching
14673  * by typing in text.
14674  *
14675  * Return value: whether or not to let the user search interactively
14676  */
14677 gboolean
14678 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14679 {
14680   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14681
14682   return tree_view->priv->enable_search;
14683 }
14684
14685
14686 /**
14687  * gtk_tree_view_get_search_column:
14688  * @tree_view: A #GtkTreeView
14689  *
14690  * Gets the column searched on by the interactive search code.
14691  *
14692  * Return value: the column the interactive search code searches in.
14693  */
14694 gint
14695 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14696 {
14697   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14698
14699   return (tree_view->priv->search_column);
14700 }
14701
14702 /**
14703  * gtk_tree_view_set_search_column:
14704  * @tree_view: A #GtkTreeView
14705  * @column: the column of the model to search in, or -1 to disable searching
14706  *
14707  * Sets @column as the column where the interactive search code should
14708  * search in for the current model.
14709  *
14710  * If the search column is set, users can use the "start-interactive-search"
14711  * key binding to bring up search popup. The enable-search property controls
14712  * whether simply typing text will also start an interactive search.
14713  *
14714  * Note that @column refers to a column of the current model. The search
14715  * column is reset to -1 when the model is changed.
14716  */
14717 void
14718 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14719                                  gint         column)
14720 {
14721   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14722   g_return_if_fail (column >= -1);
14723
14724   if (tree_view->priv->search_column == column)
14725     return;
14726
14727   tree_view->priv->search_column = column;
14728   g_object_notify (G_OBJECT (tree_view), "search-column");
14729 }
14730
14731 /**
14732  * gtk_tree_view_get_search_equal_func: (skip)
14733  * @tree_view: A #GtkTreeView
14734  *
14735  * Returns the compare function currently in use.
14736  *
14737  * Return value: the currently used compare function for the search code.
14738  */
14739
14740 GtkTreeViewSearchEqualFunc
14741 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14742 {
14743   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14744
14745   return tree_view->priv->search_equal_func;
14746 }
14747
14748 /**
14749  * gtk_tree_view_set_search_equal_func:
14750  * @tree_view: A #GtkTreeView
14751  * @search_equal_func: the compare function to use during the search
14752  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14753  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14754  *
14755  * Sets the compare function for the interactive search capabilities; note
14756  * that somewhat like strcmp() returning 0 for equality
14757  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14758  **/
14759 void
14760 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14761                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14762                                      gpointer                    search_user_data,
14763                                      GDestroyNotify              search_destroy)
14764 {
14765   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14766   g_return_if_fail (search_equal_func != NULL);
14767
14768   if (tree_view->priv->search_destroy)
14769     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14770
14771   tree_view->priv->search_equal_func = search_equal_func;
14772   tree_view->priv->search_user_data = search_user_data;
14773   tree_view->priv->search_destroy = search_destroy;
14774   if (tree_view->priv->search_equal_func == NULL)
14775     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14776 }
14777
14778 /**
14779  * gtk_tree_view_get_search_entry:
14780  * @tree_view: A #GtkTreeView
14781  *
14782  * Returns the #GtkEntry which is currently in use as interactive search
14783  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14784  * will be returned.
14785  *
14786  * Return value: (transfer none): the entry currently in use as search entry.
14787  *
14788  * Since: 2.10
14789  */
14790 GtkEntry *
14791 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14792 {
14793   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14794
14795   if (tree_view->priv->search_custom_entry_set)
14796     return GTK_ENTRY (tree_view->priv->search_entry);
14797
14798   return NULL;
14799 }
14800
14801 /**
14802  * gtk_tree_view_set_search_entry:
14803  * @tree_view: A #GtkTreeView
14804  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14805  *
14806  * Sets the entry which the interactive search code will use for this
14807  * @tree_view.  This is useful when you want to provide a search entry
14808  * in our interface at all time at a fixed position.  Passing %NULL for
14809  * @entry will make the interactive search code use the built-in popup
14810  * entry again.
14811  *
14812  * Since: 2.10
14813  */
14814 void
14815 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14816                                 GtkEntry    *entry)
14817 {
14818   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14819   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14820
14821   if (tree_view->priv->search_custom_entry_set)
14822     {
14823       if (tree_view->priv->search_entry_changed_id)
14824         {
14825           g_signal_handler_disconnect (tree_view->priv->search_entry,
14826                                        tree_view->priv->search_entry_changed_id);
14827           tree_view->priv->search_entry_changed_id = 0;
14828         }
14829       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14830                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14831                                             tree_view);
14832
14833       g_object_unref (tree_view->priv->search_entry);
14834     }
14835   else if (tree_view->priv->search_window)
14836     {
14837       gtk_widget_destroy (tree_view->priv->search_window);
14838
14839       tree_view->priv->search_window = NULL;
14840     }
14841
14842   if (entry)
14843     {
14844       tree_view->priv->search_entry = g_object_ref (entry);
14845       tree_view->priv->search_custom_entry_set = TRUE;
14846
14847       if (tree_view->priv->search_entry_changed_id == 0)
14848         {
14849           tree_view->priv->search_entry_changed_id =
14850             g_signal_connect (tree_view->priv->search_entry, "changed",
14851                               G_CALLBACK (gtk_tree_view_search_init),
14852                               tree_view);
14853         }
14854
14855         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14856                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14857                           tree_view);
14858
14859         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14860     }
14861   else
14862     {
14863       tree_view->priv->search_entry = NULL;
14864       tree_view->priv->search_custom_entry_set = FALSE;
14865     }
14866 }
14867
14868 /**
14869  * gtk_tree_view_set_search_position_func:
14870  * @tree_view: A #GtkTreeView
14871  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14872  *    to use the default search position function
14873  * @data: (allow-none): user data to pass to @func, or %NULL
14874  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14875  *
14876  * Sets the function to use when positioning the search dialog.
14877  *
14878  * Since: 2.10
14879  **/
14880 void
14881 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14882                                         GtkTreeViewSearchPositionFunc  func,
14883                                         gpointer                       user_data,
14884                                         GDestroyNotify                 destroy)
14885 {
14886   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14887
14888   if (tree_view->priv->search_position_destroy)
14889     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14890
14891   tree_view->priv->search_position_func = func;
14892   tree_view->priv->search_position_user_data = user_data;
14893   tree_view->priv->search_position_destroy = destroy;
14894   if (tree_view->priv->search_position_func == NULL)
14895     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14896 }
14897
14898 /**
14899  * gtk_tree_view_get_search_position_func: (skip)
14900  * @tree_view: A #GtkTreeView
14901  *
14902  * Returns the positioning function currently in use.
14903  *
14904  * Return value: the currently used function for positioning the search dialog.
14905  *
14906  * Since: 2.10
14907  */
14908 GtkTreeViewSearchPositionFunc
14909 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14910 {
14911   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14912
14913   return tree_view->priv->search_position_func;
14914 }
14915
14916
14917 static void
14918 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14919                                   GtkTreeView *tree_view,
14920                                   GdkDevice   *device)
14921 {
14922   if (tree_view->priv->disable_popdown)
14923     return;
14924
14925   if (tree_view->priv->search_entry_changed_id)
14926     {
14927       g_signal_handler_disconnect (tree_view->priv->search_entry,
14928                                    tree_view->priv->search_entry_changed_id);
14929       tree_view->priv->search_entry_changed_id = 0;
14930     }
14931   if (tree_view->priv->typeselect_flush_timeout)
14932     {
14933       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14934       tree_view->priv->typeselect_flush_timeout = 0;
14935     }
14936
14937   if (gtk_widget_get_visible (search_dialog))
14938     {
14939       /* send focus-in event */
14940       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14941       gtk_widget_hide (search_dialog);
14942       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14943       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14944     }
14945 }
14946
14947 static void
14948 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14949                                     GtkWidget   *search_dialog,
14950                                     gpointer     user_data)
14951 {
14952   gint x, y;
14953   gint tree_x, tree_y;
14954   gint tree_width, tree_height;
14955   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14956   GdkScreen *screen = gdk_window_get_screen (tree_window);
14957   GtkRequisition requisition;
14958   gint monitor_num;
14959   GdkRectangle monitor;
14960
14961   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14962   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14963
14964   gtk_widget_realize (search_dialog);
14965
14966   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14967   tree_width = gdk_window_get_width (tree_window);
14968   tree_height = gdk_window_get_height (tree_window);
14969   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
14970
14971   if (tree_x + tree_width > gdk_screen_get_width (screen))
14972     x = gdk_screen_get_width (screen) - requisition.width;
14973   else if (tree_x + tree_width - requisition.width < 0)
14974     x = 0;
14975   else
14976     x = tree_x + tree_width - requisition.width;
14977
14978   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14979     y = gdk_screen_get_height (screen) - requisition.height;
14980   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14981     y = 0;
14982   else
14983     y = tree_y + tree_height;
14984
14985   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14986 }
14987
14988 static void
14989 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14990                                       GtkMenu  *menu,
14991                                       gpointer  data)
14992 {
14993   GtkTreeView *tree_view = (GtkTreeView *)data;
14994
14995   tree_view->priv->disable_popdown = 1;
14996   g_signal_connect (menu, "hide",
14997                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14998 }
14999
15000 /* Because we're visible but offscreen, we just set a flag in the preedit
15001  * callback.
15002  */
15003 static void
15004 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15005                                       GtkTreeView  *tree_view)
15006 {
15007   tree_view->priv->imcontext_changed = 1;
15008   if (tree_view->priv->typeselect_flush_timeout)
15009     {
15010       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15011       tree_view->priv->typeselect_flush_timeout =
15012         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15013                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15014                        tree_view);
15015     }
15016
15017 }
15018
15019 static void
15020 gtk_tree_view_search_activate (GtkEntry    *entry,
15021                                GtkTreeView *tree_view)
15022 {
15023   GtkTreePath *path;
15024   GtkRBNode *node;
15025   GtkRBTree *tree;
15026
15027   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15028                                     tree_view,
15029                                     gtk_get_current_event_device ());
15030
15031   /* If we have a row selected and it's the cursor row, we activate
15032    * the row XXX */
15033   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
15034     {
15035       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
15036
15037       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15038
15039       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
15040         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15041
15042       gtk_tree_path_free (path);
15043     }
15044 }
15045
15046 static gboolean
15047 gtk_tree_view_real_search_enable_popdown (gpointer data)
15048 {
15049   GtkTreeView *tree_view = (GtkTreeView *)data;
15050
15051   tree_view->priv->disable_popdown = 0;
15052
15053   return FALSE;
15054 }
15055
15056 static void
15057 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15058                                      gpointer   data)
15059 {
15060   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15061 }
15062
15063 static gboolean
15064 gtk_tree_view_search_delete_event (GtkWidget *widget,
15065                                    GdkEventAny *event,
15066                                    GtkTreeView *tree_view)
15067 {
15068   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15069
15070   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15071
15072   return TRUE;
15073 }
15074
15075 static gboolean
15076 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15077                                          GdkEventButton *event,
15078                                          GtkTreeView *tree_view)
15079 {
15080   GdkDevice *keyb_device;
15081
15082   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15083
15084   keyb_device = gdk_device_get_associated_device (event->device);
15085   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15086
15087   if (event->window == tree_view->priv->bin_window)
15088     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15089
15090   return TRUE;
15091 }
15092
15093 static gboolean
15094 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15095                                    GdkEventScroll *event,
15096                                    GtkTreeView *tree_view)
15097 {
15098   gboolean retval = FALSE;
15099
15100   if (event->direction == GDK_SCROLL_UP)
15101     {
15102       gtk_tree_view_search_move (widget, tree_view, TRUE);
15103       retval = TRUE;
15104     }
15105   else if (event->direction == GDK_SCROLL_DOWN)
15106     {
15107       gtk_tree_view_search_move (widget, tree_view, FALSE);
15108       retval = TRUE;
15109     }
15110
15111   /* renew the flush timeout */
15112   if (retval && tree_view->priv->typeselect_flush_timeout
15113       && !tree_view->priv->search_custom_entry_set)
15114     {
15115       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15116       tree_view->priv->typeselect_flush_timeout =
15117         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15118                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15119                        tree_view);
15120     }
15121
15122   return retval;
15123 }
15124
15125 static gboolean
15126 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15127                                       GdkEventKey *event,
15128                                       GtkTreeView *tree_view)
15129 {
15130   gboolean retval = FALSE;
15131
15132   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15133   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15134
15135   /* close window and cancel the search */
15136   if (!tree_view->priv->search_custom_entry_set
15137       && (event->keyval == GDK_KEY_Escape ||
15138           event->keyval == GDK_KEY_Tab ||
15139             event->keyval == GDK_KEY_KP_Tab ||
15140             event->keyval == GDK_KEY_ISO_Left_Tab))
15141     {
15142       gtk_tree_view_search_dialog_hide (widget, tree_view,
15143                                         gdk_event_get_device ((GdkEvent *) event));
15144       return TRUE;
15145     }
15146
15147   /* select previous matching iter */
15148   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15149     {
15150       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15151         gtk_widget_error_bell (widget);
15152
15153       retval = TRUE;
15154     }
15155
15156   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
15157       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15158     {
15159       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15160         gtk_widget_error_bell (widget);
15161
15162       retval = TRUE;
15163     }
15164
15165   /* select next matching iter */
15166   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15167     {
15168       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15169         gtk_widget_error_bell (widget);
15170
15171       retval = TRUE;
15172     }
15173
15174   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
15175       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15176     {
15177       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15178         gtk_widget_error_bell (widget);
15179
15180       retval = TRUE;
15181     }
15182
15183   /* renew the flush timeout */
15184   if (retval && tree_view->priv->typeselect_flush_timeout
15185       && !tree_view->priv->search_custom_entry_set)
15186     {
15187       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15188       tree_view->priv->typeselect_flush_timeout =
15189         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15190                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15191                        tree_view);
15192     }
15193
15194   return retval;
15195 }
15196
15197 /*  this function returns FALSE if there is a search string but
15198  *  nothing was found, and TRUE otherwise.
15199  */
15200 static gboolean
15201 gtk_tree_view_search_move (GtkWidget   *window,
15202                            GtkTreeView *tree_view,
15203                            gboolean     up)
15204 {
15205   gboolean ret;
15206   gint len;
15207   gint count = 0;
15208   const gchar *text;
15209   GtkTreeIter iter;
15210   GtkTreeModel *model;
15211   GtkTreeSelection *selection;
15212
15213   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15214
15215   g_return_val_if_fail (text != NULL, FALSE);
15216
15217   len = strlen (text);
15218
15219   if (up && tree_view->priv->selected_iter == 1)
15220     return strlen (text) < 1;
15221
15222   len = strlen (text);
15223
15224   if (len < 1)
15225     return TRUE;
15226
15227   model = gtk_tree_view_get_model (tree_view);
15228   selection = gtk_tree_view_get_selection (tree_view);
15229
15230   /* search */
15231   gtk_tree_selection_unselect_all (selection);
15232   if (!gtk_tree_model_get_iter_first (model, &iter))
15233     return TRUE;
15234
15235   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15236                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15237
15238   if (ret)
15239     {
15240       /* found */
15241       tree_view->priv->selected_iter += up?(-1):(1);
15242       return TRUE;
15243     }
15244   else
15245     {
15246       /* return to old iter */
15247       count = 0;
15248       gtk_tree_model_get_iter_first (model, &iter);
15249       gtk_tree_view_search_iter (model, selection,
15250                                  &iter, text,
15251                                  &count, tree_view->priv->selected_iter);
15252       return FALSE;
15253     }
15254 }
15255
15256 static gboolean
15257 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15258                                  gint          column,
15259                                  const gchar  *key,
15260                                  GtkTreeIter  *iter,
15261                                  gpointer      search_data)
15262 {
15263   gboolean retval = TRUE;
15264   const gchar *str;
15265   gchar *normalized_string;
15266   gchar *normalized_key;
15267   gchar *case_normalized_string = NULL;
15268   gchar *case_normalized_key = NULL;
15269   GValue value = {0,};
15270   GValue transformed = {0,};
15271
15272   gtk_tree_model_get_value (model, iter, column, &value);
15273
15274   g_value_init (&transformed, G_TYPE_STRING);
15275
15276   if (!g_value_transform (&value, &transformed))
15277     {
15278       g_value_unset (&value);
15279       return TRUE;
15280     }
15281
15282   g_value_unset (&value);
15283
15284   str = g_value_get_string (&transformed);
15285   if (!str)
15286     {
15287       g_value_unset (&transformed);
15288       return TRUE;
15289     }
15290
15291   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15292   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15293
15294   if (normalized_string && normalized_key)
15295     {
15296       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15297       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15298
15299       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15300         retval = FALSE;
15301     }
15302
15303   g_value_unset (&transformed);
15304   g_free (normalized_key);
15305   g_free (normalized_string);
15306   g_free (case_normalized_key);
15307   g_free (case_normalized_string);
15308
15309   return retval;
15310 }
15311
15312 static gboolean
15313 gtk_tree_view_search_iter (GtkTreeModel     *model,
15314                            GtkTreeSelection *selection,
15315                            GtkTreeIter      *iter,
15316                            const gchar      *text,
15317                            gint             *count,
15318                            gint              n)
15319 {
15320   GtkRBTree *tree = NULL;
15321   GtkRBNode *node = NULL;
15322   GtkTreePath *path;
15323
15324   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15325
15326   path = gtk_tree_model_get_path (model, iter);
15327   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15328
15329   do
15330     {
15331       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15332         {
15333           (*count)++;
15334           if (*count == n)
15335             {
15336               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15337                                             TRUE, 0.5, 0.0);
15338               gtk_tree_selection_select_iter (selection, iter);
15339               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15340
15341               if (path)
15342                 gtk_tree_path_free (path);
15343
15344               return TRUE;
15345             }
15346         }
15347
15348       if (node->children)
15349         {
15350           gboolean has_child;
15351           GtkTreeIter tmp;
15352
15353           tree = node->children;
15354           node = tree->root;
15355
15356           while (node->left != tree->nil)
15357             node = node->left;
15358
15359           tmp = *iter;
15360           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15361           gtk_tree_path_down (path);
15362
15363           /* sanity check */
15364           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15365         }
15366       else
15367         {
15368           gboolean done = FALSE;
15369
15370           do
15371             {
15372               node = _gtk_rbtree_next (tree, node);
15373
15374               if (node)
15375                 {
15376                   gboolean has_next;
15377
15378                   has_next = gtk_tree_model_iter_next (model, iter);
15379
15380                   done = TRUE;
15381                   gtk_tree_path_next (path);
15382
15383                   /* sanity check */
15384                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15385                 }
15386               else
15387                 {
15388                   gboolean has_parent;
15389                   GtkTreeIter tmp_iter = *iter;
15390
15391                   node = tree->parent_node;
15392                   tree = tree->parent_tree;
15393
15394                   if (!tree)
15395                     {
15396                       if (path)
15397                         gtk_tree_path_free (path);
15398
15399                       /* we've run out of tree, done with this func */
15400                       return FALSE;
15401                     }
15402
15403                   has_parent = gtk_tree_model_iter_parent (model,
15404                                                            iter,
15405                                                            &tmp_iter);
15406                   gtk_tree_path_up (path);
15407
15408                   /* sanity check */
15409                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15410                 }
15411             }
15412           while (!done);
15413         }
15414     }
15415   while (1);
15416
15417   return FALSE;
15418 }
15419
15420 static void
15421 gtk_tree_view_search_init (GtkWidget   *entry,
15422                            GtkTreeView *tree_view)
15423 {
15424   gint ret;
15425   gint count = 0;
15426   const gchar *text;
15427   GtkTreeIter iter;
15428   GtkTreeModel *model;
15429   GtkTreeSelection *selection;
15430
15431   g_return_if_fail (GTK_IS_ENTRY (entry));
15432   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15433
15434   text = gtk_entry_get_text (GTK_ENTRY (entry));
15435
15436   model = gtk_tree_view_get_model (tree_view);
15437   selection = gtk_tree_view_get_selection (tree_view);
15438
15439   /* search */
15440   gtk_tree_selection_unselect_all (selection);
15441   if (tree_view->priv->typeselect_flush_timeout
15442       && !tree_view->priv->search_custom_entry_set)
15443     {
15444       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15445       tree_view->priv->typeselect_flush_timeout =
15446         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15447                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15448                        tree_view);
15449     }
15450
15451   if (*text == '\0')
15452     return;
15453
15454   if (!gtk_tree_model_get_iter_first (model, &iter))
15455     return;
15456
15457   ret = gtk_tree_view_search_iter (model, selection,
15458                                    &iter, text,
15459                                    &count, 1);
15460
15461   if (ret)
15462     tree_view->priv->selected_iter = 1;
15463 }
15464
15465 void
15466 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15467                                 GtkTreeViewColumn *column,
15468                                 GtkCellEditable   *cell_editable)
15469 {
15470   if (tree_view->priv->edited_column == NULL)
15471     return;
15472
15473   g_return_if_fail (column == tree_view->priv->edited_column);
15474
15475   tree_view->priv->edited_column = NULL;
15476
15477   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15478     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15479
15480   gtk_container_remove (GTK_CONTAINER (tree_view),
15481                         GTK_WIDGET (cell_editable));
15482
15483   /* FIXME should only redraw a single node */
15484   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15485 }
15486
15487 static gboolean
15488 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15489                              GtkTreePath *cursor_path,
15490                              gboolean     edit_only)
15491 {
15492   GtkTreeIter iter;
15493   GdkRectangle cell_area;
15494   GtkTreeViewColumn *focus_column;
15495   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15496   gint retval = FALSE;
15497   GtkRBTree *cursor_tree;
15498   GtkRBNode *cursor_node;
15499
15500   g_assert (tree_view->priv->focus_column);
15501   focus_column = tree_view->priv->focus_column;
15502
15503   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15504     return FALSE;
15505
15506   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15507       cursor_node == NULL)
15508     return FALSE;
15509
15510   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15511
15512   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15513
15514   gtk_tree_view_column_cell_set_cell_data (focus_column,
15515                                            tree_view->priv->model,
15516                                            &iter,
15517                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15518                                            cursor_node->children ? TRUE : FALSE);
15519   gtk_tree_view_get_cell_area (tree_view,
15520                                cursor_path,
15521                                focus_column,
15522                                &cell_area);
15523
15524   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15525                               _gtk_tree_view_column_get_context (focus_column),
15526                               GTK_WIDGET (tree_view),
15527                               &cell_area,
15528                               flags, edit_only))
15529     retval = TRUE;
15530
15531   return retval;
15532 }
15533
15534 void
15535 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15536                              GtkTreeViewColumn *column,
15537                              GtkTreePath       *path,
15538                              GtkCellEditable   *cell_editable,
15539                              GdkRectangle      *cell_area)
15540 {
15541   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15542   GtkRequisition requisition;
15543
15544   tree_view->priv->edited_column = column;
15545
15546   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15547   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15548
15549   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15550                                  &requisition, NULL);
15551
15552   tree_view->priv->draw_keyfocus = TRUE;
15553
15554   if (requisition.height < cell_area->height)
15555     {
15556       gint diff = cell_area->height - requisition.height;
15557       gtk_tree_view_put (tree_view,
15558                          GTK_WIDGET (cell_editable),
15559                          cell_area->x, cell_area->y + diff/2,
15560                          cell_area->width, requisition.height);
15561     }
15562   else
15563     {
15564       gtk_tree_view_put (tree_view,
15565                          GTK_WIDGET (cell_editable),
15566                          cell_area->x, cell_area->y,
15567                          cell_area->width, cell_area->height);
15568     }
15569 }
15570
15571 static void
15572 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15573                             gboolean     cancel_editing)
15574 {
15575   GtkTreeViewColumn *column;
15576
15577   if (tree_view->priv->edited_column == NULL)
15578     return;
15579
15580   /*
15581    * This is very evil. We need to do this, because
15582    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15583    * later on. If gtk_tree_view_row_changed notices
15584    * tree_view->priv->edited_column != NULL, it'll call
15585    * gtk_tree_view_stop_editing again. Bad things will happen then.
15586    *
15587    * Please read that again if you intend to modify anything here.
15588    */
15589
15590   column = tree_view->priv->edited_column;
15591   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15592   tree_view->priv->edited_column = NULL;
15593 }
15594
15595
15596 /**
15597  * gtk_tree_view_set_hover_selection:
15598  * @tree_view: a #GtkTreeView
15599  * @hover: %TRUE to enable hover selection mode
15600  *
15601  * Enables of disables the hover selection mode of @tree_view.
15602  * Hover selection makes the selected row follow the pointer.
15603  * Currently, this works only for the selection modes
15604  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15605  *
15606  * Since: 2.6
15607  **/
15608 void
15609 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15610                                    gboolean     hover)
15611 {
15612   hover = hover != FALSE;
15613
15614   if (hover != tree_view->priv->hover_selection)
15615     {
15616       tree_view->priv->hover_selection = hover;
15617
15618       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15619     }
15620 }
15621
15622 /**
15623  * gtk_tree_view_get_hover_selection:
15624  * @tree_view: a #GtkTreeView
15625  *
15626  * Returns whether hover selection mode is turned on for @tree_view.
15627  *
15628  * Return value: %TRUE if @tree_view is in hover selection mode
15629  *
15630  * Since: 2.6
15631  **/
15632 gboolean
15633 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15634 {
15635   return tree_view->priv->hover_selection;
15636 }
15637
15638 /**
15639  * gtk_tree_view_set_hover_expand:
15640  * @tree_view: a #GtkTreeView
15641  * @expand: %TRUE to enable hover selection mode
15642  *
15643  * Enables of disables the hover expansion mode of @tree_view.
15644  * Hover expansion makes rows expand or collapse if the pointer
15645  * moves over them.
15646  *
15647  * Since: 2.6
15648  **/
15649 void
15650 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15651                                 gboolean     expand)
15652 {
15653   expand = expand != FALSE;
15654
15655   if (expand != tree_view->priv->hover_expand)
15656     {
15657       tree_view->priv->hover_expand = expand;
15658
15659       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15660     }
15661 }
15662
15663 /**
15664  * gtk_tree_view_get_hover_expand:
15665  * @tree_view: a #GtkTreeView
15666  *
15667  * Returns whether hover expansion mode is turned on for @tree_view.
15668  *
15669  * Return value: %TRUE if @tree_view is in hover expansion mode
15670  *
15671  * Since: 2.6
15672  **/
15673 gboolean
15674 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15675 {
15676   return tree_view->priv->hover_expand;
15677 }
15678
15679 /**
15680  * gtk_tree_view_set_rubber_banding:
15681  * @tree_view: a #GtkTreeView
15682  * @enable: %TRUE to enable rubber banding
15683  *
15684  * Enables or disables rubber banding in @tree_view.  If the selection mode
15685  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15686  * multiple rows by dragging the mouse.
15687  *
15688  * Since: 2.10
15689  **/
15690 void
15691 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15692                                   gboolean     enable)
15693 {
15694   enable = enable != FALSE;
15695
15696   if (enable != tree_view->priv->rubber_banding_enable)
15697     {
15698       tree_view->priv->rubber_banding_enable = enable;
15699
15700       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15701     }
15702 }
15703
15704 /**
15705  * gtk_tree_view_get_rubber_banding:
15706  * @tree_view: a #GtkTreeView
15707  *
15708  * Returns whether rubber banding is turned on for @tree_view.  If the
15709  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15710  * user to select multiple rows by dragging the mouse.
15711  *
15712  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15713  *
15714  * Since: 2.10
15715  **/
15716 gboolean
15717 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15718 {
15719   return tree_view->priv->rubber_banding_enable;
15720 }
15721
15722 /**
15723  * gtk_tree_view_is_rubber_banding_active:
15724  * @tree_view: a #GtkTreeView
15725  *
15726  * Returns whether a rubber banding operation is currently being done
15727  * in @tree_view.
15728  *
15729  * Return value: %TRUE if a rubber banding operation is currently being
15730  * done in @tree_view.
15731  *
15732  * Since: 2.12
15733  **/
15734 gboolean
15735 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15736 {
15737   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15738
15739   if (tree_view->priv->rubber_banding_enable
15740       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15741     return TRUE;
15742
15743   return FALSE;
15744 }
15745
15746 /**
15747  * gtk_tree_view_get_row_separator_func: (skip)
15748  * @tree_view: a #GtkTreeView
15749  *
15750  * Returns the current row separator function.
15751  *
15752  * Return value: the current row separator function.
15753  *
15754  * Since: 2.6
15755  **/
15756 GtkTreeViewRowSeparatorFunc
15757 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15758 {
15759   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15760
15761   return tree_view->priv->row_separator_func;
15762 }
15763
15764 /**
15765  * gtk_tree_view_set_row_separator_func:
15766  * @tree_view: a #GtkTreeView
15767  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15768  * @data: (allow-none): user data to pass to @func, or %NULL
15769  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15770  *
15771  * Sets the row separator function, which is used to determine
15772  * whether a row should be drawn as a separator. If the row separator
15773  * function is %NULL, no separators are drawn. This is the default value.
15774  *
15775  * Since: 2.6
15776  **/
15777 void
15778 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15779                                       GtkTreeViewRowSeparatorFunc  func,
15780                                       gpointer                     data,
15781                                       GDestroyNotify               destroy)
15782 {
15783   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15784
15785   if (tree_view->priv->row_separator_destroy)
15786     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15787
15788   tree_view->priv->row_separator_func = func;
15789   tree_view->priv->row_separator_data = data;
15790   tree_view->priv->row_separator_destroy = destroy;
15791
15792   /* Have the tree recalculate heights */
15793   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15794   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15795 }
15796
15797
15798 static void
15799 gtk_tree_view_grab_notify (GtkWidget *widget,
15800                            gboolean   was_grabbed)
15801 {
15802   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15803
15804   tree_view->priv->in_grab = !was_grabbed;
15805
15806   if (!was_grabbed)
15807     {
15808       tree_view->priv->pressed_button = -1;
15809
15810       if (tree_view->priv->rubber_band_status)
15811         gtk_tree_view_stop_rubber_band (tree_view);
15812     }
15813 }
15814
15815 static void
15816 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15817                                    GtkStateFlags  previous_state)
15818 {
15819   if (gtk_widget_get_realized (widget))
15820     {
15821       GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15822       GtkStyleContext *context;
15823
15824       context = gtk_widget_get_style_context (widget);
15825       gtk_style_context_set_background (context, tree_view->priv->bin_window);
15826     }
15827
15828   gtk_widget_queue_draw (widget);
15829 }
15830
15831 /**
15832  * gtk_tree_view_get_grid_lines:
15833  * @tree_view: a #GtkTreeView
15834  *
15835  * Returns which grid lines are enabled in @tree_view.
15836  *
15837  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15838  * are enabled.
15839  *
15840  * Since: 2.10
15841  */
15842 GtkTreeViewGridLines
15843 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15844 {
15845   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15846
15847   return tree_view->priv->grid_lines;
15848 }
15849
15850 /**
15851  * gtk_tree_view_set_grid_lines:
15852  * @tree_view: a #GtkTreeView
15853  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15854  * enable.
15855  *
15856  * Sets which grid lines to draw in @tree_view.
15857  *
15858  * Since: 2.10
15859  */
15860 void
15861 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15862                               GtkTreeViewGridLines   grid_lines)
15863 {
15864   GtkTreeViewPrivate *priv;
15865   GtkWidget *widget;
15866   GtkTreeViewGridLines old_grid_lines;
15867
15868   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15869
15870   priv = tree_view->priv;
15871   widget = GTK_WIDGET (tree_view);
15872
15873   old_grid_lines = priv->grid_lines;
15874   priv->grid_lines = grid_lines;
15875
15876   if (gtk_widget_get_realized (widget))
15877     {
15878       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15879           priv->grid_line_width)
15880         {
15881           priv->grid_line_width = 0;
15882         }
15883
15884       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15885           !priv->grid_line_width)
15886         {
15887           gint8 *dash_list;
15888
15889           gtk_widget_style_get (widget,
15890                                 "grid-line-width", &priv->grid_line_width,
15891                                 "grid-line-pattern", (gchar *)&dash_list,
15892                                 NULL);
15893
15894           if (dash_list)
15895             {
15896               priv->grid_line_dashes[0] = dash_list[0];
15897               if (dash_list[0])
15898                 priv->grid_line_dashes[1] = dash_list[1];
15899
15900               g_free (dash_list);
15901             }
15902           else
15903             {
15904               priv->grid_line_dashes[0] = 1;
15905               priv->grid_line_dashes[1] = 1;
15906             }
15907         }
15908     }
15909
15910   if (old_grid_lines != grid_lines)
15911     {
15912       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15913
15914       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15915     }
15916 }
15917
15918 /**
15919  * gtk_tree_view_get_enable_tree_lines:
15920  * @tree_view: a #GtkTreeView.
15921  *
15922  * Returns whether or not tree lines are drawn in @tree_view.
15923  *
15924  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15925  * otherwise.
15926  *
15927  * Since: 2.10
15928  */
15929 gboolean
15930 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15931 {
15932   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15933
15934   return tree_view->priv->tree_lines_enabled;
15935 }
15936
15937 /**
15938  * gtk_tree_view_set_enable_tree_lines:
15939  * @tree_view: a #GtkTreeView
15940  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15941  *
15942  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15943  * This does not have any visible effects for lists.
15944  *
15945  * Since: 2.10
15946  */
15947 void
15948 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15949                                      gboolean     enabled)
15950 {
15951   GtkTreeViewPrivate *priv;
15952   GtkWidget *widget;
15953   gboolean was_enabled;
15954
15955   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15956
15957   enabled = enabled != FALSE;
15958
15959   priv = tree_view->priv;
15960   widget = GTK_WIDGET (tree_view);
15961
15962   was_enabled = priv->tree_lines_enabled;
15963
15964   priv->tree_lines_enabled = enabled;
15965
15966   if (gtk_widget_get_realized (widget))
15967     {
15968       if (!enabled && priv->tree_line_width)
15969         {
15970           priv->tree_line_width = 0;
15971         }
15972
15973       if (enabled && !priv->tree_line_width)
15974         {
15975           gint8 *dash_list;
15976           gtk_widget_style_get (widget,
15977                                 "tree-line-width", &priv->tree_line_width,
15978                                 "tree-line-pattern", (gchar *)&dash_list,
15979                                 NULL);
15980
15981           if (dash_list)
15982             {
15983               priv->tree_line_dashes[0] = dash_list[0];
15984               if (dash_list[0])
15985                 priv->tree_line_dashes[1] = dash_list[1];
15986
15987               g_free (dash_list);
15988             }
15989           else
15990             {
15991               priv->tree_line_dashes[0] = 1;
15992               priv->tree_line_dashes[1] = 1;
15993             }
15994         }
15995     }
15996
15997   if (was_enabled != enabled)
15998     {
15999       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16000
16001       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16002     }
16003 }
16004
16005
16006 /**
16007  * gtk_tree_view_set_show_expanders:
16008  * @tree_view: a #GtkTreeView
16009  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16010  *
16011  * Sets whether to draw and enable expanders and indent child rows in
16012  * @tree_view.  When disabled there will be no expanders visible in trees
16013  * and there will be no way to expand and collapse rows by default.  Also
16014  * note that hiding the expanders will disable the default indentation.  You
16015  * can set a custom indentation in this case using
16016  * gtk_tree_view_set_level_indentation().
16017  * This does not have any visible effects for lists.
16018  *
16019  * Since: 2.12
16020  */
16021 void
16022 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16023                                   gboolean     enabled)
16024 {
16025   gboolean was_enabled;
16026
16027   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16028
16029   enabled = enabled != FALSE;
16030   was_enabled = tree_view->priv->show_expanders;
16031
16032   tree_view->priv->show_expanders = enabled == TRUE;
16033
16034   if (enabled != was_enabled)
16035     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16036 }
16037
16038 /**
16039  * gtk_tree_view_get_show_expanders:
16040  * @tree_view: a #GtkTreeView.
16041  *
16042  * Returns whether or not expanders are drawn in @tree_view.
16043  *
16044  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16045  * otherwise.
16046  *
16047  * Since: 2.12
16048  */
16049 gboolean
16050 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16051 {
16052   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16053
16054   return tree_view->priv->show_expanders;
16055 }
16056
16057 /**
16058  * gtk_tree_view_set_level_indentation:
16059  * @tree_view: a #GtkTreeView
16060  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16061  *
16062  * Sets the amount of extra indentation for child levels to use in @tree_view
16063  * in addition to the default indentation.  The value should be specified in
16064  * pixels, a value of 0 disables this feature and in this case only the default
16065  * indentation will be used.
16066  * This does not have any visible effects for lists.
16067  *
16068  * Since: 2.12
16069  */
16070 void
16071 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16072                                      gint         indentation)
16073 {
16074   tree_view->priv->level_indentation = indentation;
16075
16076   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16077 }
16078
16079 /**
16080  * gtk_tree_view_get_level_indentation:
16081  * @tree_view: a #GtkTreeView.
16082  *
16083  * Returns the amount, in pixels, of extra indentation for child levels
16084  * in @tree_view.
16085  *
16086  * Return value: the amount of extra indentation for child levels in
16087  * @tree_view.  A return value of 0 means that this feature is disabled.
16088  *
16089  * Since: 2.12
16090  */
16091 gint
16092 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16093 {
16094   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16095
16096   return tree_view->priv->level_indentation;
16097 }
16098
16099 /**
16100  * gtk_tree_view_set_tooltip_row:
16101  * @tree_view: a #GtkTreeView
16102  * @tooltip: a #GtkTooltip
16103  * @path: a #GtkTreePath
16104  *
16105  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16106  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16107  * See also gtk_tooltip_set_tip_area().
16108  *
16109  * Since: 2.12
16110  */
16111 void
16112 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16113                                GtkTooltip  *tooltip,
16114                                GtkTreePath *path)
16115 {
16116   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16117   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16118
16119   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16120 }
16121
16122 /**
16123  * gtk_tree_view_set_tooltip_cell:
16124  * @tree_view: a #GtkTreeView
16125  * @tooltip: a #GtkTooltip
16126  * @path: (allow-none): a #GtkTreePath or %NULL
16127  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16128  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16129  *
16130  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16131  * in common.  For example if @path is %NULL and @column is set, the tip
16132  * area will be set to the full area covered by @column.  See also
16133  * gtk_tooltip_set_tip_area().
16134  *
16135  * Note that if @path is not specified and @cell is set and part of a column
16136  * containing the expander, the tooltip might not show and hide at the correct
16137  * position.  In such cases @path must be set to the current node under the
16138  * mouse cursor for this function to operate correctly.
16139  *
16140  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16141  *
16142  * Since: 2.12
16143  */
16144 void
16145 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16146                                 GtkTooltip        *tooltip,
16147                                 GtkTreePath       *path,
16148                                 GtkTreeViewColumn *column,
16149                                 GtkCellRenderer   *cell)
16150 {
16151   GtkAllocation allocation;
16152   GdkRectangle rect;
16153
16154   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16155   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16156   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16157   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16158
16159   /* Determine x values. */
16160   if (column && cell)
16161     {
16162       GdkRectangle tmp;
16163       gint start, width;
16164
16165       /* We always pass in path here, whether it is NULL or not.
16166        * For cells in expander columns path must be specified so that
16167        * we can correctly account for the indentation.  This also means
16168        * that the tooltip is constrained vertically by the "Determine y
16169        * values" code below; this is not a real problem since cells actually
16170        * don't stretch vertically in constrast to columns.
16171        */
16172       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16173       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16174
16175       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16176                                                          tmp.x + start, 0,
16177                                                          &rect.x, NULL);
16178       rect.width = width;
16179     }
16180   else if (column)
16181     {
16182       GdkRectangle tmp;
16183
16184       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16185       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16186                                                          tmp.x, 0,
16187                                                          &rect.x, NULL);
16188       rect.width = tmp.width;
16189     }
16190   else
16191     {
16192       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16193       rect.x = 0;
16194       rect.width = allocation.width;
16195     }
16196
16197   /* Determine y values. */
16198   if (path)
16199     {
16200       GdkRectangle tmp;
16201
16202       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16203       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16204                                                          0, tmp.y,
16205                                                          NULL, &rect.y);
16206       rect.height = tmp.height;
16207     }
16208   else
16209     {
16210       rect.y = 0;
16211       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16212     }
16213
16214   gtk_tooltip_set_tip_area (tooltip, &rect);
16215 }
16216
16217 /**
16218  * gtk_tree_view_get_tooltip_context:
16219  * @tree_view: a #GtkTreeView
16220  * @x: (inout): the x coordinate (relative to widget coordinates)
16221  * @y: (inout): the y coordinate (relative to widget coordinates)
16222  * @keyboard_tip: whether this is a keyboard tooltip or not
16223  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
16224  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16225  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16226  *
16227  * This function is supposed to be used in a #GtkWidget::query-tooltip
16228  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16229  * which are received in the signal handler, should be passed to this
16230  * function without modification.
16231  *
16232  * The return value indicates whether there is a tree view row at the given
16233  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16234  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16235  * @model, @path and @iter which have been provided will be set to point to
16236  * that row and the corresponding model.  @x and @y will always be converted
16237  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16238  *
16239  * Return value: whether or not the given tooltip context points to a row.
16240  *
16241  * Since: 2.12
16242  */
16243 gboolean
16244 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16245                                    gint          *x,
16246                                    gint          *y,
16247                                    gboolean       keyboard_tip,
16248                                    GtkTreeModel **model,
16249                                    GtkTreePath  **path,
16250                                    GtkTreeIter   *iter)
16251 {
16252   GtkTreePath *tmppath = NULL;
16253
16254   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16255   g_return_val_if_fail (x != NULL, FALSE);
16256   g_return_val_if_fail (y != NULL, FALSE);
16257
16258   if (keyboard_tip)
16259     {
16260       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16261
16262       if (!tmppath)
16263         return FALSE;
16264     }
16265   else
16266     {
16267       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16268                                                          x, y);
16269
16270       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16271                                           &tmppath, NULL, NULL, NULL))
16272         return FALSE;
16273     }
16274
16275   if (model)
16276     *model = gtk_tree_view_get_model (tree_view);
16277
16278   if (iter)
16279     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16280                              iter, tmppath);
16281
16282   if (path)
16283     *path = tmppath;
16284   else
16285     gtk_tree_path_free (tmppath);
16286
16287   return TRUE;
16288 }
16289
16290 static gboolean
16291 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16292                                     gint        x,
16293                                     gint        y,
16294                                     gboolean    keyboard_tip,
16295                                     GtkTooltip *tooltip,
16296                                     gpointer    data)
16297 {
16298   GValue value = { 0, };
16299   GValue transformed = { 0, };
16300   GtkTreeIter iter;
16301   GtkTreePath *path;
16302   GtkTreeModel *model;
16303   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16304
16305   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16306                                           &x, &y,
16307                                           keyboard_tip,
16308                                           &model, &path, &iter))
16309     return FALSE;
16310
16311   gtk_tree_model_get_value (model, &iter,
16312                             tree_view->priv->tooltip_column, &value);
16313
16314   g_value_init (&transformed, G_TYPE_STRING);
16315
16316   if (!g_value_transform (&value, &transformed))
16317     {
16318       g_value_unset (&value);
16319       gtk_tree_path_free (path);
16320
16321       return FALSE;
16322     }
16323
16324   g_value_unset (&value);
16325
16326   if (!g_value_get_string (&transformed))
16327     {
16328       g_value_unset (&transformed);
16329       gtk_tree_path_free (path);
16330
16331       return FALSE;
16332     }
16333
16334   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16335   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16336
16337   gtk_tree_path_free (path);
16338   g_value_unset (&transformed);
16339
16340   return TRUE;
16341 }
16342
16343 /**
16344  * gtk_tree_view_set_tooltip_column:
16345  * @tree_view: a #GtkTreeView
16346  * @column: an integer, which is a valid column number for @tree_view's model
16347  *
16348  * If you only plan to have simple (text-only) tooltips on full rows, you
16349  * can use this function to have #GtkTreeView handle these automatically
16350  * for you. @column should be set to the column in @tree_view's model
16351  * containing the tooltip texts, or -1 to disable this feature.
16352  *
16353  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16354  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16355  *
16356  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16357  * so &amp;, &lt;, etc have to be escaped in the text.
16358  *
16359  * Since: 2.12
16360  */
16361 void
16362 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16363                                   gint         column)
16364 {
16365   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16366
16367   if (column == tree_view->priv->tooltip_column)
16368     return;
16369
16370   if (column == -1)
16371     {
16372       g_signal_handlers_disconnect_by_func (tree_view,
16373                                             gtk_tree_view_set_tooltip_query_cb,
16374                                             NULL);
16375       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16376     }
16377   else
16378     {
16379       if (tree_view->priv->tooltip_column == -1)
16380         {
16381           g_signal_connect (tree_view, "query-tooltip",
16382                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16383           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16384         }
16385     }
16386
16387   tree_view->priv->tooltip_column = column;
16388   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16389 }
16390
16391 /**
16392  * gtk_tree_view_get_tooltip_column:
16393  * @tree_view: a #GtkTreeView
16394  *
16395  * Returns the column of @tree_view's model which is being used for
16396  * displaying tooltips on @tree_view's rows.
16397  *
16398  * Return value: the index of the tooltip column that is currently being
16399  * used, or -1 if this is disabled.
16400  *
16401  * Since: 2.12
16402  */
16403 gint
16404 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16405 {
16406   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16407
16408   return tree_view->priv->tooltip_column;
16409 }