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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtktypebuiltins.h"
  52 #include "gtkmain.h"
  53 #include "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155  /* This lovely little value is used to determine how far away from the title bar
 156   * you can move the mouse and still have a column drag work.
 157   */
 158 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 159
 160 #ifdef __GNUC__
 161
 162 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 163      if (!(expr))                                                       \
 164        {                                                                \
 165          g_log (G_LOG_DOMAIN,                                           \
 166                 G_LOG_LEVEL_CRITICAL,                                   \
 167                 "%s (%s): assertion `%s' failed.\n"                     \
 168                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 169                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 170                 "without letting the view know.  Any display from now on is likely to\n"  \
 171                 "be incorrect.\n",                                                        \
 172                 G_STRLOC,                                               \
 173                 G_STRFUNC,                                              \
 174                 #expr);                                                 \
 175          return ret;                                                    \
 176        };                               }G_STMT_END
 177
 178 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 179      if (!(expr))                                                       \
 180        {                                                                \
 181          g_log (G_LOG_DOMAIN,                                           \
 182                 G_LOG_LEVEL_CRITICAL,                                   \
 183                 "%s (%s): assertion `%s' failed.\n"                     \
 184                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 185                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 186                 "without letting the view know.  Any display from now on is likely to\n"  \
 187                 "be incorrect.\n",                                                        \
 188                 G_STRLOC,                                               \
 189                 G_STRFUNC,                                              \
 190                 #expr);                                                 \
 191          return;                                                        \
 192        };                               }G_STMT_END
 193
 194 #else
 195
 196 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 197      if (!(expr))                                                       \
 198        {                                                                \
 199          g_log (G_LOG_DOMAIN,                                           \
 200                 G_LOG_LEVEL_CRITICAL,                                   \
 201                 "file %s: line %d: assertion `%s' failed.\n"       \
 202                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 203                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 204                 "without letting the view know.  Any display from now on is likely to\n"  \
 205                 "be incorrect.\n",                                                        \
 206                 __FILE__,                                               \
 207                 __LINE__,                                               \
 208                 #expr);                                                 \
 209          return ret;                                                    \
 210        };                               }G_STMT_END
 211
 212 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 213      if (!(expr))                                                       \
 214        {                                                                \
 215          g_log (G_LOG_DOMAIN,                                           \
 216                 G_LOG_LEVEL_CRITICAL,                                   \
 217                 "file %s: line %d: assertion '%s' failed.\n"            \
 218                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 219                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 220                 "without letting the view know.  Any display from now on is likely to\n"  \
 221                 "be incorrect.\n",                                                        \
 222                 __FILE__,                                               \
 223                 __LINE__,                                               \
 224                 #expr);                                                 \
 225          return;                                                        \
 226        };                               }G_STMT_END
 227 #endif
 228
 229 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 230 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 231 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 232 #define SCROLL_EDGE_SIZE 15
 233 #define EXPANDER_EXTRA_PADDING 4
 234 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 235 #define AUTO_EXPAND_TIMEOUT 500
 236
 237 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 238  * vice versa.
 239  */
 240 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 241 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 242
 243 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 244 struct _GtkTreeViewColumnReorder
 245 {
 246   gint left_align;
 247   gint right_align;
 248   GtkTreeViewColumn *left_column;
 249   GtkTreeViewColumn *right_column;
 250 };
 251
 252 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 253 struct _GtkTreeViewChild
 254 {
 255   GtkWidget *widget;
 256   gint x;
 257   gint y;
 258   gint width;
 259   gint height;
 260 };
 261
 262
 263 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 264 struct _TreeViewDragInfo
 265 {
 266   GdkModifierType start_button_mask;
 267   GtkTargetList *_unused_source_target_list;
 268   GdkDragAction source_actions;
 269
 270   GtkTargetList *_unused_dest_target_list;
 271
 272   guint source_set : 1;
 273   guint dest_set : 1;
 274 };
 275
 276
 277 struct _GtkTreeViewPrivate
 278 {
 279   GtkTreeModel *model;
 280
 281   /* tree information */
 282   GtkRBTree *tree;
 283
 284   /* Container info */
 285   GList *children;
 286   gint width;
 287   gint height;
 288
 289   /* Adjustments */
 290   GtkAdjustment *hadjustment;
 291   GtkAdjustment *vadjustment;
 292   gint           min_display_width;
 293   gint           min_display_height;
 294
 295   /* Sub windows */
 296   GdkWindow *bin_window;
 297   GdkWindow *header_window;
 298
 299   /* Scroll position state keeping */
 300   GtkTreeRowReference *top_row;
 301   gint top_row_dy;
 302   /* dy == y pos of top_row + top_row_dy */
 303   /* we cache it for simplicity of the code */
 304   gint dy;
 305
 306   guint presize_handler_timer;
 307   guint validate_rows_timer;
 308   guint scroll_sync_timer;
 309
 310   /* Indentation and expander layout */
 311   gint expander_size;
 312   GtkTreeViewColumn *expander_column;
 313
 314   gint level_indentation;
 315
 316   /* Key navigation (focus), selection */
 317   gint cursor_offset;
 318
 319   GtkTreeRowReference *anchor;
 320   GtkTreeRowReference *cursor;
 321
 322   GtkTreeViewColumn *focus_column;
 323
 324   /* Current pressed node, previously pressed, prelight */
 325   GtkRBNode *button_pressed_node;
 326   GtkRBTree *button_pressed_tree;
 327
 328   gint pressed_button;
 329   gint press_start_x;
 330   gint press_start_y;
 331
 332   gint event_last_x;
 333   gint event_last_y;
 334
 335   guint last_button_time;
 336   gint last_button_x;
 337   gint last_button_y;
 338
 339   GtkRBNode *prelight_node;
 340   GtkRBTree *prelight_tree;
 341
 342   /* Cell Editing */
 343   GtkTreeViewColumn *edited_column;
 344
 345   /* The node that's currently being collapsed or expanded */
 346   GtkRBNode *expanded_collapsed_node;
 347   GtkRBTree *expanded_collapsed_tree;
 348   guint expand_collapse_timeout;
 349
 350   /* Auto expand/collapse timeout in hover mode */
 351   guint auto_expand_timeout;
 352
 353   /* Selection information */
 354   GtkTreeSelection *selection;
 355
 356   /* Header information */
 357   gint n_columns;
 358   GList *columns;
 359   gint header_height;
 360
 361   GtkTreeViewColumnDropFunc column_drop_func;
 362   gpointer column_drop_func_data;
 363   GDestroyNotify column_drop_func_data_destroy;
 364   GList *column_drag_info;
 365   GtkTreeViewColumnReorder *cur_reorder;
 366
 367   gint prev_width_before_expander;
 368
 369   /* Interactive Header reordering */
 370   GdkWindow *drag_window;
 371   GdkWindow *drag_highlight_window;
 372   GtkTreeViewColumn *drag_column;
 373   gint drag_column_x;
 374
 375   /* Interactive Header Resizing */
 376   gint drag_pos;
 377   gint x_drag;
 378
 379   /* Non-interactive Header Resizing, expand flag support */
 380   gint prev_width;
 381
 382   gint last_extra_space;
 383   gint last_extra_space_per_column;
 384   gint last_number_of_expand_columns;
 385
 386   /* ATK Hack */
 387   GtkTreeDestroyCountFunc destroy_count_func;
 388   gpointer destroy_count_data;
 389   GDestroyNotify destroy_count_destroy;
 390
 391   /* Scroll timeout (e.g. during dnd, rubber banding) */
 392   guint scroll_timeout;
 393
 394   /* Row drag-and-drop */
 395   GtkTreeRowReference *drag_dest_row;
 396   GtkTreeViewDropPosition drag_dest_pos;
 397   guint open_dest_timeout;
 398
 399   /* Rubber banding */
 400   gint rubber_band_status;
 401   gint rubber_band_x;
 402   gint rubber_band_y;
 403   gint rubber_band_extend;
 404   gint rubber_band_modify;
 405
 406   GtkRBNode *rubber_band_start_node;
 407   GtkRBTree *rubber_band_start_tree;
 408
 409   GtkRBNode *rubber_band_end_node;
 410   GtkRBTree *rubber_band_end_tree;
 411
 412   /* fixed height */
 413   gint fixed_height;
 414
 415   /* Scroll-to functionality when unrealized */
 416   GtkTreeRowReference *scroll_to_path;
 417   GtkTreeViewColumn *scroll_to_column;
 418   gfloat scroll_to_row_align;
 419   gfloat scroll_to_col_align;
 420
 421   /* Interactive search */
 422   gint selected_iter;
 423   gint search_column;
 424   GtkTreeViewSearchPositionFunc search_position_func;
 425   GtkTreeViewSearchEqualFunc search_equal_func;
 426   gpointer search_user_data;
 427   GDestroyNotify search_destroy;
 428   gpointer search_position_user_data;
 429   GDestroyNotify search_position_destroy;
 430   GtkWidget *search_window;
 431   GtkWidget *search_entry;
 432   gulong search_entry_changed_id;
 433   guint typeselect_flush_timeout;
 434
 435   /* Grid and tree lines */
 436   GtkTreeViewGridLines grid_lines;
 437   double grid_line_dashes[2];
 438   int grid_line_width;
 439
 440   gboolean tree_lines_enabled;
 441   double tree_line_dashes[2];
 442   int tree_line_width;
 443
 444   /* Row separators */
 445   GtkTreeViewRowSeparatorFunc row_separator_func;
 446   gpointer row_separator_data;
 447   GDestroyNotify row_separator_destroy;
 448
 449   /* Tooltip support */
 450   gint tooltip_column;
 451
 452   /* Here comes the bitfield */
 453   guint scroll_to_use_align : 1;
 454
 455   guint fixed_height_mode : 1;
 456   guint fixed_height_check : 1;
 457
 458   guint reorderable : 1;
 459   guint header_has_focus : 1;
 460   guint drag_column_window_state : 3;
 461   /* hint to display rows in alternating colors */
 462   guint has_rules : 1;
 463   guint mark_rows_col_dirty : 1;
 464
 465   /* for DnD */
 466   guint empty_view_drop : 1;
 467
 468   guint modify_selection_pressed : 1;
 469   guint extend_selection_pressed : 1;
 470
 471   guint init_hadjust_value : 1;
 472
 473   guint in_top_row_to_dy : 1;
 474
 475   /* interactive search */
 476   guint enable_search : 1;
 477   guint disable_popdown : 1;
 478   guint search_custom_entry_set : 1;
 479
 480   guint hover_selection : 1;
 481   guint hover_expand : 1;
 482   guint imcontext_changed : 1;
 483
 484   guint rubber_banding_enable : 1;
 485
 486   guint in_grab : 1;
 487
 488   guint post_validation_flag : 1;
 489
 490   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 491   guint search_entry_avoid_unhandled_binding : 1;
 492
 493   /* GtkScrollablePolicy needs to be checked when
 494    * driving the scrollable adjustment values */
 495   guint hscroll_policy : 1;
 496   guint vscroll_policy : 1;
 497
 498   /* GtkTreeView flags */
 499   guint is_list : 1;
 500   guint show_expanders : 1;
 501   guint in_column_resize : 1;
 502   guint arrow_prelit : 1;
 503   guint headers_visible : 1;
 504   guint draw_keyfocus : 1;
 505   guint model_setup : 1;
 506   guint in_column_drag : 1;
 507 };
 508
 509
 510 /* Signals */
 511 enum
 512 {
 513   ROW_ACTIVATED,
 514   TEST_EXPAND_ROW,
 515   TEST_COLLAPSE_ROW,
 516   ROW_EXPANDED,
 517   ROW_COLLAPSED,
 518   COLUMNS_CHANGED,
 519   CURSOR_CHANGED,
 520   MOVE_CURSOR,
 521   SELECT_ALL,
 522   UNSELECT_ALL,
 523   SELECT_CURSOR_ROW,
 524   TOGGLE_CURSOR_ROW,
 525   EXPAND_COLLAPSE_CURSOR_ROW,
 526   SELECT_CURSOR_PARENT,
 527   START_INTERACTIVE_SEARCH,
 528   LAST_SIGNAL
 529 };
 530
 531 /* Properties */
 532 enum {
 533   PROP_0,
 534   PROP_MODEL,
 535   PROP_HADJUSTMENT,
 536   PROP_VADJUSTMENT,
 537   PROP_HSCROLL_POLICY,
 538   PROP_VSCROLL_POLICY,
 539   PROP_HEADERS_VISIBLE,
 540   PROP_HEADERS_CLICKABLE,
 541   PROP_EXPANDER_COLUMN,
 542   PROP_REORDERABLE,
 543   PROP_RULES_HINT,
 544   PROP_ENABLE_SEARCH,
 545   PROP_SEARCH_COLUMN,
 546   PROP_FIXED_HEIGHT_MODE,
 547   PROP_HOVER_SELECTION,
 548   PROP_HOVER_EXPAND,
 549   PROP_SHOW_EXPANDERS,
 550   PROP_LEVEL_INDENTATION,
 551   PROP_RUBBER_BANDING,
 552   PROP_ENABLE_GRID_LINES,
 553   PROP_ENABLE_TREE_LINES,
 554   PROP_TOOLTIP_COLUMN
 555 };
 556
 557 /* object signals */
 558 static void     gtk_tree_view_finalize             (GObject          *object);
 559 static void     gtk_tree_view_set_property         (GObject         *object,
 560                                                     guint            prop_id,
 561                                                     const GValue    *value,
 562                                                     GParamSpec      *pspec);
 563 static void     gtk_tree_view_get_property         (GObject         *object,
 564                                                     guint            prop_id,
 565                                                     GValue          *value,
 566                                                     GParamSpec      *pspec);
 567
 568 /* gtkwidget signals */
 569 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 570 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 571 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 572 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 573 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 574                                                     gint             *minimum,
 575                                                     gint             *natural);
 576 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 577                                                     gint             *minimum,
 578                                                     gint             *natural);
 579 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 580                                                     GtkRequisition   *requisition,
 581                                                     gboolean          may_validate);
 582 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 583                                                     GtkAllocation    *allocation);
 584 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 585                                                     cairo_t          *cr);
 586 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 587                                                     GdkEventKey      *event);
 588 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 589                                                     GdkEventKey      *event);
 590 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 591                                                     GdkEventMotion   *event);
 592 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 593                                                     GdkEventCrossing *event);
 594 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 595                                                     GdkEventCrossing *event);
 596 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 597                                                     GdkEventButton   *event);
 598 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 599                                                     GdkEventButton   *event);
 600 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 601                                                     GdkEventGrabBroken *event);
 602 #if 0
 603 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 604                                                     GdkEventConfigure *event);
 605 #endif
 606
 607 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 608                                                          GtkWidget    *child);
 609
 610 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 611                                                     GtkWidget        *child);
 612 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 613                                                     GdkEventFocus    *event);
 614 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 615                                                     GtkDirectionType  direction);
 616 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 617 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 618 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 619                                                     gboolean          was_grabbed);
 620 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 621                                                     GtkStateFlags     previous_state);
 622
 623 /* container signals */
 624 static void     gtk_tree_view_remove               (GtkContainer     *container,
 625                                                     GtkWidget        *widget);
 626 static void     gtk_tree_view_forall               (GtkContainer     *container,
 627                                                     gboolean          include_internals,
 628                                                     GtkCallback       callback,
 629                                                     gpointer          callback_data);
 630
 631 /* Source side drag signals */
 632 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 633                                             GdkDragContext   *context);
 634 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 635                                             GdkDragContext   *context);
 636 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 637                                             GdkDragContext   *context,
 638                                             GtkSelectionData *selection_data,
 639                                             guint             info,
 640                                             guint             time);
 641 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643
 644 /* Target side drag signals */
 645 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 646                                                   GdkDragContext   *context,
 647                                                   guint             time);
 648 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 649                                                   GdkDragContext   *context,
 650                                                   gint              x,
 651                                                   gint              y,
 652                                                   guint             time);
 653 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 654                                                   GdkDragContext   *context,
 655                                                   gint              x,
 656                                                   gint              y,
 657                                                   guint             time);
 658 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 659                                                   GdkDragContext   *context,
 660                                                   gint              x,
 661                                                   gint              y,
 662                                                   GtkSelectionData *selection_data,
 663                                                   guint             info,
 664                                                   guint             time);
 665
 666 /* tree_model signals */
 667 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 668                                                            GtkMovementStep  step,
 669                                                            gint             count);
 670 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 671 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 672 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 673                                                            gboolean         start_editing);
 674 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 675 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 676                                                                gboolean         logical,
 677                                                                gboolean         expand,
 678                                                                gboolean         open_all);
 679 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 680 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 681                                                            GtkTreePath     *path,
 682                                                            GtkTreeIter     *iter,
 683                                                            gpointer         data);
 684 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 685                                                            GtkTreePath     *path,
 686                                                            GtkTreeIter     *iter,
 687                                                            gpointer         data);
 688 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 689                                                            GtkTreePath     *path,
 690                                                            GtkTreeIter     *iter,
 691                                                            gpointer         data);
 692 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 693                                                            GtkTreePath     *path,
 694                                                            gpointer         data);
 695 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 696                                                            GtkTreePath     *parent,
 697                                                            GtkTreeIter     *iter,
 698                                                            gint            *new_order,
 699                                                            gpointer         data);
 700
 701 /* Incremental reflow */
 702 static gboolean validate_row             (GtkTreeView *tree_view,
 703                                           GtkRBTree   *tree,
 704                                           GtkRBNode   *node,
 705                                           GtkTreeIter *iter,
 706                                           GtkTreePath *path);
 707 static void     validate_visible_area    (GtkTreeView *tree_view);
 708 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 709 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 710                                           gboolean     size_request);
 711 static gboolean validate_rows            (GtkTreeView *tree_view);
 712 static gboolean presize_handler_callback (gpointer     data);
 713 static void     install_presize_handler  (GtkTreeView *tree_view);
 714 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 715 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 716                                              GtkTreePath *path,
 717                                              gint         offset);
 718 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 719 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 720 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 721
 722 /* Internal functions */
 723 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 724                                                               GtkTreeViewColumn  *column);
 725 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 726 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 727                                                               guint               keyval,
 728                                                               guint               modmask,
 729                                                               gboolean            add_shifted_binding,
 730                                                               GtkMovementStep     step,
 731                                                               gint                count);
 732 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 733                                                               GtkRBTree          *tree);
 734 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 735                                                               GtkTreePath        *path,
 736                                                               const GdkRectangle *clip_rect);
 737 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 738                                                               GtkRBTree          *tree,
 739                                                               GtkRBNode          *node);
 740 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 741                                                               cairo_t            *cr,
 742                                                               GtkRBTree          *tree,
 743                                                               GtkRBNode          *node);
 744 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 745                                                               GtkRBTree          *tree,
 746                                                               gint               *x1,
 747                                                               gint               *x2);
 748 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 749                                                               gint                i,
 750                                                               gint               *x);
 751 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 752                                                               GtkTreeView        *tree_view);
 753 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 754                                                               GtkRBTree          *tree,
 755                                                               GtkTreeIter        *iter,
 756                                                               gint                depth,
 757                                                               gboolean            recurse);
 758 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 759                                                               GtkRBTree          *tree,
 760                                                               GtkRBNode          *node);
 761 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 762                                                               GtkTreeViewColumn  *column,
 763                                                               gboolean            focus_to_cell);
 764 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 765                                                               GdkEventMotion     *event);
 766 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 767 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 768                                                               gint                count);
 769 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 770                                                               gint                count);
 771 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 772                                                               gint                count);
 773 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 774                                                               gint                count);
 775 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 776                                                               GtkTreePath        *path,
 777                                                               GtkRBTree          *tree,
 778                                                               GtkRBNode          *node,
 779                                                               gboolean            animate);
 780 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 781                                                               GtkTreePath        *path,
 782                                                               GtkRBTree          *tree,
 783                                                               GtkRBNode          *node,
 784                                                               gboolean            open_all,
 785                                                               gboolean            animate);
 786 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 787                                                               GtkTreePath        *path,
 788                                                               gboolean            clear_and_select,
 789                                                               gboolean            clamp_node);
 790 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 791 static void     column_sizing_notify                         (GObject            *object,
 792                                                               GParamSpec         *pspec,
 793                                                               gpointer            data);
 794 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 795 static void     update_prelight                              (GtkTreeView        *tree_view,
 796                                                               int                 x,
 797                                                               int                 y);
 798
 799 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 800
 801 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 802                                                               GtkRBTree   *tree,
 803                                                               GtkRBNode   *node,
 804                                                               gint         vertical_separator);
 805 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 806                                                               GtkRBNode   *node,
 807                                                               gint         vertical_separator);
 808
 809 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 810                                                               GtkRBTree   *tree,
 811                                                               GtkRBNode   *node);
 812 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 813                                                               GtkRBNode   *node);
 814
 815 /* interactive search */
 816 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 817 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 818                                                          GtkTreeView      *tree_view,
 819                                                          GdkDevice        *device);
 820 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 821                                                          GtkWidget        *search_dialog,
 822                                                          gpointer          user_data);
 823 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 824                                                          GtkMenu          *menu,
 825                                                          gpointer          data);
 826 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 827                                                          GtkTreeView      *tree_view);
 828 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 829                                                          GtkTreeView      *tree_view);
 830 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 831 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 832                                                          gpointer          data);
 833 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 834                                                          GdkEventAny      *event,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 837                                                          GdkEventButton   *event,
 838                                                          GtkTreeView      *tree_view);
 839 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 840                                                          GdkEventScroll   *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 843                                                          GdkEventKey      *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 846                                                          GtkTreeView      *tree_view,
 847                                                          gboolean          up);
 848 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 849                                                          gint              column,
 850                                                          const gchar      *key,
 851                                                          GtkTreeIter      *iter,
 852                                                          gpointer          search_data);
 853 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 854                                                          GtkTreeSelection *selection,
 855                                                          GtkTreeIter      *iter,
 856                                                          const gchar      *text,
 857                                                          gint             *count,
 858                                                          gint              n);
 859 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 860                                                          GtkTreeView      *tree_view);
 861 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 862                                                          GtkWidget        *child_widget,
 863                                                          gint              x,
 864                                                          gint              y,
 865                                                          gint              width,
 866                                                          gint              height);
 867 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 868                                                          GtkTreePath      *cursor_path,
 869                                                          gboolean          edit_only);
 870 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 871                                                          gboolean     cancel_editing);
 872 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 873                                                              GdkDevice   *device,
 874                                                              gboolean     keybinding);
 875 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 876 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 877                                                          GtkTreeViewColumn *column,
 878                                                          gint               drop_position);
 879
 880 /* GtkBuildable */
 881 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 882                                                             GtkBuilder        *builder,
 883                                                             GObject           *child,
 884                                                             const gchar       *type);
 885 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 886                                                             GtkBuilder        *builder,
 887                                                             const gchar       *childname);
 888 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 889
 890 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 891 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 892                                                         GtkAdjustment *adjustment);
 893 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 894 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 895                                                         GtkAdjustment *adjustment);
 896
 897 static gboolean scroll_row_timeout                   (gpointer     data);
 898 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 899 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 900
 901 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 902
 903 \f
 904
 905 /* GType Methods
 906  */
 907
 908 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 909                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 910                                                 gtk_tree_view_buildable_init)
 911                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 912
 913 static void
 914 gtk_tree_view_class_init (GtkTreeViewClass *class)
 915 {
 916   GObjectClass *o_class;
 917   GtkWidgetClass *widget_class;
 918   GtkContainerClass *container_class;
 919   GtkBindingSet *binding_set;
 920
 921   binding_set = gtk_binding_set_by_class (class);
 922
 923   o_class = (GObjectClass *) class;
 924   widget_class = (GtkWidgetClass *) class;
 925   container_class = (GtkContainerClass *) class;
 926
 927   /* GObject signals */
 928   o_class->set_property = gtk_tree_view_set_property;
 929   o_class->get_property = gtk_tree_view_get_property;
 930   o_class->finalize = gtk_tree_view_finalize;
 931
 932   /* GtkWidget signals */
 933   widget_class->destroy = gtk_tree_view_destroy;
 934   widget_class->map = gtk_tree_view_map;
 935   widget_class->realize = gtk_tree_view_realize;
 936   widget_class->unrealize = gtk_tree_view_unrealize;
 937   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 938   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 939   widget_class->size_allocate = gtk_tree_view_size_allocate;
 940   widget_class->button_press_event = gtk_tree_view_button_press;
 941   widget_class->button_release_event = gtk_tree_view_button_release;
 942   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 943   /*widget_class->configure_event = gtk_tree_view_configure;*/
 944   widget_class->motion_notify_event = gtk_tree_view_motion;
 945   widget_class->draw = gtk_tree_view_draw;
 946   widget_class->key_press_event = gtk_tree_view_key_press;
 947   widget_class->key_release_event = gtk_tree_view_key_release;
 948   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 949   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 950   widget_class->focus_out_event = gtk_tree_view_focus_out;
 951   widget_class->drag_begin = gtk_tree_view_drag_begin;
 952   widget_class->drag_end = gtk_tree_view_drag_end;
 953   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 954   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 955   widget_class->drag_leave = gtk_tree_view_drag_leave;
 956   widget_class->drag_motion = gtk_tree_view_drag_motion;
 957   widget_class->drag_drop = gtk_tree_view_drag_drop;
 958   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 959   widget_class->focus = gtk_tree_view_focus;
 960   widget_class->grab_focus = gtk_tree_view_grab_focus;
 961   widget_class->style_updated = gtk_tree_view_style_updated;
 962   widget_class->grab_notify = gtk_tree_view_grab_notify;
 963   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 964
 965   /* GtkContainer signals */
 966   container_class->remove = gtk_tree_view_remove;
 967   container_class->forall = gtk_tree_view_forall;
 968   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 969   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 970
 971   class->move_cursor = gtk_tree_view_real_move_cursor;
 972   class->select_all = gtk_tree_view_real_select_all;
 973   class->unselect_all = gtk_tree_view_real_unselect_all;
 974   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 975   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 976   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 977   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 978   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 979
 980   /* Properties */
 981
 982   g_object_class_install_property (o_class,
 983                                    PROP_MODEL,
 984                                    g_param_spec_object ("model",
 985                                                         P_("TreeView Model"),
 986                                                         P_("The model for the tree view"),
 987                                                         GTK_TYPE_TREE_MODEL,
 988                                                         GTK_PARAM_READWRITE));
 989
 990   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 991   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 992   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 993   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
 994
 995   g_object_class_install_property (o_class,
 996                                    PROP_HEADERS_VISIBLE,
 997                                    g_param_spec_boolean ("headers-visible",
 998                                                          P_("Headers Visible"),
 999                                                          P_("Show the column header buttons"),
1000                                                          TRUE,
1001                                                          GTK_PARAM_READWRITE));
1002
1003   g_object_class_install_property (o_class,
1004                                    PROP_HEADERS_CLICKABLE,
1005                                    g_param_spec_boolean ("headers-clickable",
1006                                                          P_("Headers Clickable"),
1007                                                          P_("Column headers respond to click events"),
1008                                                          TRUE,
1009                                                          GTK_PARAM_READWRITE));
1010
1011   g_object_class_install_property (o_class,
1012                                    PROP_EXPANDER_COLUMN,
1013                                    g_param_spec_object ("expander-column",
1014                                                         P_("Expander Column"),
1015                                                         P_("Set the column for the expander column"),
1016                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1017                                                         GTK_PARAM_READWRITE));
1018
1019   g_object_class_install_property (o_class,
1020                                    PROP_REORDERABLE,
1021                                    g_param_spec_boolean ("reorderable",
1022                                                          P_("Reorderable"),
1023                                                          P_("View is reorderable"),
1024                                                          FALSE,
1025                                                          GTK_PARAM_READWRITE));
1026
1027   g_object_class_install_property (o_class,
1028                                    PROP_RULES_HINT,
1029                                    g_param_spec_boolean ("rules-hint",
1030                                                          P_("Rules Hint"),
1031                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1032                                                          FALSE,
1033                                                          GTK_PARAM_READWRITE));
1034
1035     g_object_class_install_property (o_class,
1036                                      PROP_ENABLE_SEARCH,
1037                                      g_param_spec_boolean ("enable-search",
1038                                                            P_("Enable Search"),
1039                                                            P_("View allows user to search through columns interactively"),
1040                                                            TRUE,
1041                                                            GTK_PARAM_READWRITE));
1042
1043     g_object_class_install_property (o_class,
1044                                      PROP_SEARCH_COLUMN,
1045                                      g_param_spec_int ("search-column",
1046                                                        P_("Search Column"),
1047                                                        P_("Model column to search through during interactive search"),
1048                                                        -1,
1049                                                        G_MAXINT,
1050                                                        -1,
1051                                                        GTK_PARAM_READWRITE));
1052
1053     /**
1054      * GtkTreeView:fixed-height-mode:
1055      *
1056      * Setting the ::fixed-height-mode property to %TRUE speeds up
1057      * #GtkTreeView by assuming that all rows have the same height.
1058      * Only enable this option if all rows are the same height.
1059      * Please see gtk_tree_view_set_fixed_height_mode() for more
1060      * information on this option.
1061      *
1062      * Since: 2.4
1063      **/
1064     g_object_class_install_property (o_class,
1065                                      PROP_FIXED_HEIGHT_MODE,
1066                                      g_param_spec_boolean ("fixed-height-mode",
1067                                                            P_("Fixed Height Mode"),
1068                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1069                                                            FALSE,
1070                                                            GTK_PARAM_READWRITE));
1071
1072     /**
1073      * GtkTreeView:hover-selection:
1074      *
1075      * Enables or disables the hover selection mode of @tree_view.
1076      * Hover selection makes the selected row follow the pointer.
1077      * Currently, this works only for the selection modes
1078      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1079      *
1080      * This mode is primarily intended for treeviews in popups, e.g.
1081      * in #GtkComboBox or #GtkEntryCompletion.
1082      *
1083      * Since: 2.6
1084      */
1085     g_object_class_install_property (o_class,
1086                                      PROP_HOVER_SELECTION,
1087                                      g_param_spec_boolean ("hover-selection",
1088                                                            P_("Hover Selection"),
1089                                                            P_("Whether the selection should follow the pointer"),
1090                                                            FALSE,
1091                                                            GTK_PARAM_READWRITE));
1092
1093     /**
1094      * GtkTreeView:hover-expand:
1095      *
1096      * Enables or disables the hover expansion mode of @tree_view.
1097      * Hover expansion makes rows expand or collapse if the pointer moves
1098      * over them.
1099      *
1100      * This mode is primarily intended for treeviews in popups, e.g.
1101      * in #GtkComboBox or #GtkEntryCompletion.
1102      *
1103      * Since: 2.6
1104      */
1105     g_object_class_install_property (o_class,
1106                                      PROP_HOVER_EXPAND,
1107                                      g_param_spec_boolean ("hover-expand",
1108                                                            P_("Hover Expand"),
1109                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1110                                                            FALSE,
1111                                                            GTK_PARAM_READWRITE));
1112
1113     /**
1114      * GtkTreeView:show-expanders:
1115      *
1116      * %TRUE if the view has expanders.
1117      *
1118      * Since: 2.12
1119      */
1120     g_object_class_install_property (o_class,
1121                                      PROP_SHOW_EXPANDERS,
1122                                      g_param_spec_boolean ("show-expanders",
1123                                                            P_("Show Expanders"),
1124                                                            P_("View has expanders"),
1125                                                            TRUE,
1126                                                            GTK_PARAM_READWRITE));
1127
1128     /**
1129      * GtkTreeView:level-indentation:
1130      *
1131      * Extra indentation for each level.
1132      *
1133      * Since: 2.12
1134      */
1135     g_object_class_install_property (o_class,
1136                                      PROP_LEVEL_INDENTATION,
1137                                      g_param_spec_int ("level-indentation",
1138                                                        P_("Level Indentation"),
1139                                                        P_("Extra indentation for each level"),
1140                                                        0,
1141                                                        G_MAXINT,
1142                                                        0,
1143                                                        GTK_PARAM_READWRITE));
1144
1145     g_object_class_install_property (o_class,
1146                                      PROP_RUBBER_BANDING,
1147                                      g_param_spec_boolean ("rubber-banding",
1148                                                            P_("Rubber Banding"),
1149                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1150                                                            FALSE,
1151                                                            GTK_PARAM_READWRITE));
1152
1153     g_object_class_install_property (o_class,
1154                                      PROP_ENABLE_GRID_LINES,
1155                                      g_param_spec_enum ("enable-grid-lines",
1156                                                         P_("Enable Grid Lines"),
1157                                                         P_("Whether grid lines should be drawn in the tree view"),
1158                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1159                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1160                                                         GTK_PARAM_READWRITE));
1161
1162     g_object_class_install_property (o_class,
1163                                      PROP_ENABLE_TREE_LINES,
1164                                      g_param_spec_boolean ("enable-tree-lines",
1165                                                            P_("Enable Tree Lines"),
1166                                                            P_("Whether tree lines should be drawn in the tree view"),
1167                                                            FALSE,
1168                                                            GTK_PARAM_READWRITE));
1169
1170     g_object_class_install_property (o_class,
1171                                      PROP_TOOLTIP_COLUMN,
1172                                      g_param_spec_int ("tooltip-column",
1173                                                        P_("Tooltip Column"),
1174                                                        P_("The column in the model containing the tooltip texts for the rows"),
1175                                                        -1,
1176                                                        G_MAXINT,
1177                                                        -1,
1178                                                        GTK_PARAM_READWRITE));
1179
1180   /* Style properties */
1181 #define _TREE_VIEW_EXPANDER_SIZE 14
1182 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1183 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1184
1185   gtk_widget_class_install_style_property (widget_class,
1186                                            g_param_spec_int ("expander-size",
1187                                                              P_("Expander Size"),
1188                                                              P_("Size of the expander arrow"),
1189                                                              0,
1190                                                              G_MAXINT,
1191                                                              _TREE_VIEW_EXPANDER_SIZE,
1192                                                              GTK_PARAM_READABLE));
1193
1194   gtk_widget_class_install_style_property (widget_class,
1195                                            g_param_spec_int ("vertical-separator",
1196                                                              P_("Vertical Separator Width"),
1197                                                              P_("Vertical space between cells.  Must be an even number"),
1198                                                              0,
1199                                                              G_MAXINT,
1200                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1201                                                              GTK_PARAM_READABLE));
1202
1203   gtk_widget_class_install_style_property (widget_class,
1204                                            g_param_spec_int ("horizontal-separator",
1205                                                              P_("Horizontal Separator Width"),
1206                                                              P_("Horizontal space between cells.  Must be an even number"),
1207                                                              0,
1208                                                              G_MAXINT,
1209                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1210                                                              GTK_PARAM_READABLE));
1211
1212   gtk_widget_class_install_style_property (widget_class,
1213                                            g_param_spec_boolean ("allow-rules",
1214                                                                  P_("Allow Rules"),
1215                                                                  P_("Allow drawing of alternating color rows"),
1216                                                                  TRUE,
1217                                                                  GTK_PARAM_READABLE));
1218
1219   gtk_widget_class_install_style_property (widget_class,
1220                                            g_param_spec_boolean ("indent-expanders",
1221                                                                  P_("Indent Expanders"),
1222                                                                  P_("Make the expanders indented"),
1223                                                                  TRUE,
1224                                                                  GTK_PARAM_READABLE));
1225
1226   gtk_widget_class_install_style_property (widget_class,
1227                                            g_param_spec_boxed ("even-row-color",
1228                                                                P_("Even Row Color"),
1229                                                                P_("Color to use for even rows"),
1230                                                                GDK_TYPE_COLOR,
1231                                                                GTK_PARAM_READABLE));
1232
1233   gtk_widget_class_install_style_property (widget_class,
1234                                            g_param_spec_boxed ("odd-row-color",
1235                                                                P_("Odd Row Color"),
1236                                                                P_("Color to use for odd rows"),
1237                                                                GDK_TYPE_COLOR,
1238                                                                GTK_PARAM_READABLE));
1239
1240   gtk_widget_class_install_style_property (widget_class,
1241                                            g_param_spec_int ("grid-line-width",
1242                                                              P_("Grid line width"),
1243                                                              P_("Width, in pixels, of the tree view grid lines"),
1244                                                              0, G_MAXINT, 1,
1245                                                              GTK_PARAM_READABLE));
1246
1247   gtk_widget_class_install_style_property (widget_class,
1248                                            g_param_spec_int ("tree-line-width",
1249                                                              P_("Tree line width"),
1250                                                              P_("Width, in pixels, of the tree view lines"),
1251                                                              0, G_MAXINT, 1,
1252                                                              GTK_PARAM_READABLE));
1253
1254   gtk_widget_class_install_style_property (widget_class,
1255                                            g_param_spec_string ("grid-line-pattern",
1256                                                                 P_("Grid line pattern"),
1257                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1258                                                                 "\1\1",
1259                                                                 GTK_PARAM_READABLE));
1260
1261   gtk_widget_class_install_style_property (widget_class,
1262                                            g_param_spec_string ("tree-line-pattern",
1263                                                                 P_("Tree line pattern"),
1264                                                                 P_("Dash pattern used to draw the tree view lines"),
1265                                                                 "\1\1",
1266                                                                 GTK_PARAM_READABLE));
1267
1268   /* Signals */
1269   /**
1270    * GtkTreeView::row-activated:
1271    * @tree_view: the object on which the signal is emitted
1272    * @path: the #GtkTreePath for the activated row
1273    * @column: the #GtkTreeViewColumn in which the activation occurred
1274    *
1275    * The "row-activated" signal is emitted when the method
1276    * gtk_tree_view_row_activated() is called or the user double clicks
1277    * a treeview row. It is also emitted when a non-editable row is
1278    * selected and one of the keys: Space, Shift+Space, Return or
1279    * Enter is pressed.
1280    *
1281    * For selection handling refer to the <link linkend="TreeWidget">tree
1282    * widget conceptual overview</link> as well as #GtkTreeSelection.
1283    */
1284   tree_view_signals[ROW_ACTIVATED] =
1285     g_signal_new (I_("row-activated"),
1286                   G_TYPE_FROM_CLASS (o_class),
1287                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1288                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1289                   NULL, NULL,
1290                   _gtk_marshal_VOID__BOXED_OBJECT,
1291                   G_TYPE_NONE, 2,
1292                   GTK_TYPE_TREE_PATH,
1293                   GTK_TYPE_TREE_VIEW_COLUMN);
1294
1295   /**
1296    * GtkTreeView::test-expand-row:
1297    * @tree_view: the object on which the signal is emitted
1298    * @iter: the tree iter of the row to expand
1299    * @path: a tree path that points to the row
1300    *
1301    * The given row is about to be expanded (show its children nodes). Use this
1302    * signal if you need to control the expandability of individual rows.
1303    *
1304    * Returns: %FALSE to allow expansion, %TRUE to reject
1305    */
1306   tree_view_signals[TEST_EXPAND_ROW] =
1307     g_signal_new (I_("test-expand-row"),
1308                   G_TYPE_FROM_CLASS (o_class),
1309                   G_SIGNAL_RUN_LAST,
1310                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1311                   _gtk_boolean_handled_accumulator, NULL,
1312                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1313                   G_TYPE_BOOLEAN, 2,
1314                   GTK_TYPE_TREE_ITER,
1315                   GTK_TYPE_TREE_PATH);
1316
1317   /**
1318    * GtkTreeView::test-collapse-row:
1319    * @tree_view: the object on which the signal is emitted
1320    * @iter: the tree iter of the row to collapse
1321    * @path: a tree path that points to the row
1322    *
1323    * The given row is about to be collapsed (hide its children nodes). Use this
1324    * signal if you need to control the collapsibility of individual rows.
1325    *
1326    * Returns: %FALSE to allow collapsing, %TRUE to reject
1327    */
1328   tree_view_signals[TEST_COLLAPSE_ROW] =
1329     g_signal_new (I_("test-collapse-row"),
1330                   G_TYPE_FROM_CLASS (o_class),
1331                   G_SIGNAL_RUN_LAST,
1332                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1333                   _gtk_boolean_handled_accumulator, NULL,
1334                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1335                   G_TYPE_BOOLEAN, 2,
1336                   GTK_TYPE_TREE_ITER,
1337                   GTK_TYPE_TREE_PATH);
1338
1339   /**
1340    * GtkTreeView::row-expanded:
1341    * @tree_view: the object on which the signal is emitted
1342    * @iter: the tree iter of the expanded row
1343    * @path: a tree path that points to the row
1344    *
1345    * The given row has been expanded (child nodes are shown).
1346    */
1347   tree_view_signals[ROW_EXPANDED] =
1348     g_signal_new (I_("row-expanded"),
1349                   G_TYPE_FROM_CLASS (o_class),
1350                   G_SIGNAL_RUN_LAST,
1351                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1352                   NULL, NULL,
1353                   _gtk_marshal_VOID__BOXED_BOXED,
1354                   G_TYPE_NONE, 2,
1355                   GTK_TYPE_TREE_ITER,
1356                   GTK_TYPE_TREE_PATH);
1357
1358   /**
1359    * GtkTreeView::row-collapsed:
1360    * @tree_view: the object on which the signal is emitted
1361    * @iter: the tree iter of the collapsed row
1362    * @path: a tree path that points to the row
1363    *
1364    * The given row has been collapsed (child nodes are hidden).
1365    */
1366   tree_view_signals[ROW_COLLAPSED] =
1367     g_signal_new (I_("row-collapsed"),
1368                   G_TYPE_FROM_CLASS (o_class),
1369                   G_SIGNAL_RUN_LAST,
1370                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1371                   NULL, NULL,
1372                   _gtk_marshal_VOID__BOXED_BOXED,
1373                   G_TYPE_NONE, 2,
1374                   GTK_TYPE_TREE_ITER,
1375                   GTK_TYPE_TREE_PATH);
1376
1377   /**
1378    * GtkTreeView::columns-changed:
1379    * @tree_view: the object on which the signal is emitted
1380    *
1381    * The number of columns of the treeview has changed.
1382    */
1383   tree_view_signals[COLUMNS_CHANGED] =
1384     g_signal_new (I_("columns-changed"),
1385                   G_TYPE_FROM_CLASS (o_class),
1386                   G_SIGNAL_RUN_LAST,
1387                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1388                   NULL, NULL,
1389                   _gtk_marshal_VOID__VOID,
1390                   G_TYPE_NONE, 0);
1391
1392   /**
1393    * GtkTreeView::cursor-changed:
1394    * @tree_view: the object on which the signal is emitted
1395    *
1396    * The position of the cursor (focused cell) has changed.
1397    */
1398   tree_view_signals[CURSOR_CHANGED] =
1399     g_signal_new (I_("cursor-changed"),
1400                   G_TYPE_FROM_CLASS (o_class),
1401                   G_SIGNAL_RUN_LAST,
1402                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1403                   NULL, NULL,
1404                   _gtk_marshal_VOID__VOID,
1405                   G_TYPE_NONE, 0);
1406
1407   tree_view_signals[MOVE_CURSOR] =
1408     g_signal_new (I_("move-cursor"),
1409                   G_TYPE_FROM_CLASS (o_class),
1410                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1411                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1412                   NULL, NULL,
1413                   _gtk_marshal_BOOLEAN__ENUM_INT,
1414                   G_TYPE_BOOLEAN, 2,
1415                   GTK_TYPE_MOVEMENT_STEP,
1416                   G_TYPE_INT);
1417
1418   tree_view_signals[SELECT_ALL] =
1419     g_signal_new (I_("select-all"),
1420                   G_TYPE_FROM_CLASS (o_class),
1421                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1422                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1423                   NULL, NULL,
1424                   _gtk_marshal_BOOLEAN__VOID,
1425                   G_TYPE_BOOLEAN, 0);
1426
1427   tree_view_signals[UNSELECT_ALL] =
1428     g_signal_new (I_("unselect-all"),
1429                   G_TYPE_FROM_CLASS (o_class),
1430                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1431                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1432                   NULL, NULL,
1433                   _gtk_marshal_BOOLEAN__VOID,
1434                   G_TYPE_BOOLEAN, 0);
1435
1436   tree_view_signals[SELECT_CURSOR_ROW] =
1437     g_signal_new (I_("select-cursor-row"),
1438                   G_TYPE_FROM_CLASS (o_class),
1439                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1440                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1441                   NULL, NULL,
1442                   _gtk_marshal_BOOLEAN__BOOLEAN,
1443                   G_TYPE_BOOLEAN, 1,
1444                   G_TYPE_BOOLEAN);
1445
1446   tree_view_signals[TOGGLE_CURSOR_ROW] =
1447     g_signal_new (I_("toggle-cursor-row"),
1448                   G_TYPE_FROM_CLASS (o_class),
1449                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1450                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1451                   NULL, NULL,
1452                   _gtk_marshal_BOOLEAN__VOID,
1453                   G_TYPE_BOOLEAN, 0);
1454
1455   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1456     g_signal_new (I_("expand-collapse-cursor-row"),
1457                   G_TYPE_FROM_CLASS (o_class),
1458                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1459                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1460                   NULL, NULL,
1461                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1462                   G_TYPE_BOOLEAN, 3,
1463                   G_TYPE_BOOLEAN,
1464                   G_TYPE_BOOLEAN,
1465                   G_TYPE_BOOLEAN);
1466
1467   tree_view_signals[SELECT_CURSOR_PARENT] =
1468     g_signal_new (I_("select-cursor-parent"),
1469                   G_TYPE_FROM_CLASS (o_class),
1470                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1471                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1472                   NULL, NULL,
1473                   _gtk_marshal_BOOLEAN__VOID,
1474                   G_TYPE_BOOLEAN, 0);
1475
1476   tree_view_signals[START_INTERACTIVE_SEARCH] =
1477     g_signal_new (I_("start-interactive-search"),
1478                   G_TYPE_FROM_CLASS (o_class),
1479                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1480                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1481                   NULL, NULL,
1482                   _gtk_marshal_BOOLEAN__VOID,
1483                   G_TYPE_BOOLEAN, 0);
1484
1485   /* Key bindings */
1486   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1487                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1488   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1489                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1490
1491   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1492                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1493   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1494                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1495
1496   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1497                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1498
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1503                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1504   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1505                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1506
1507   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1508                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1509   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1510                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1511
1512   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1513                                   GTK_MOVEMENT_PAGES, -1);
1514   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1515                                   GTK_MOVEMENT_PAGES, -1);
1516
1517   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1518                                   GTK_MOVEMENT_PAGES, 1);
1519   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1520                                   GTK_MOVEMENT_PAGES, 1);
1521
1522
1523   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1524                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1525                                 G_TYPE_INT, 1);
1526
1527   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1528                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1529                                 G_TYPE_INT, -1);
1530
1531   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1532                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1533                                 G_TYPE_INT, 1);
1534
1535   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1536                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1537                                 G_TYPE_INT, -1);
1538
1539   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1540                                 "move-cursor", 2,
1541                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1542                                 G_TYPE_INT, 1);
1543
1544   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1545                                 "move-cursor", 2,
1546                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1547                                 G_TYPE_INT, -1);
1548
1549   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1550                                 "move-cursor", 2,
1551                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1552                                 G_TYPE_INT, 1);
1553
1554   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1555                                 "move-cursor", 2,
1556                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1557                                 G_TYPE_INT, -1);
1558
1559   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1561
1562   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1563   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1569                                 G_TYPE_BOOLEAN, TRUE);
1570   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1571                                 G_TYPE_BOOLEAN, TRUE);
1572
1573   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1574                                 G_TYPE_BOOLEAN, TRUE);
1575   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1576                                 G_TYPE_BOOLEAN, TRUE);
1577   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1578                                 G_TYPE_BOOLEAN, TRUE);
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583
1584   /* expand and collapse rows */
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1586                                 G_TYPE_BOOLEAN, TRUE,
1587                                 G_TYPE_BOOLEAN, TRUE,
1588                                 G_TYPE_BOOLEAN, FALSE);
1589
1590   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1591                                 "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, TRUE);
1595   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1596                                 "expand-collapse-cursor-row", 3,
1597                                 G_TYPE_BOOLEAN, TRUE,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE);
1600
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, FALSE,
1605                                 G_TYPE_BOOLEAN, FALSE);
1606   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1607                                 "expand-collapse-cursor-row", 3,
1608                                 G_TYPE_BOOLEAN, TRUE,
1609                                 G_TYPE_BOOLEAN, FALSE,
1610                                 G_TYPE_BOOLEAN, FALSE);
1611
1612   /* Not doable on US keyboards */
1613   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, TRUE,
1616                                 G_TYPE_BOOLEAN, TRUE);
1617   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1618                                 G_TYPE_BOOLEAN, TRUE,
1619                                 G_TYPE_BOOLEAN, TRUE,
1620                                 G_TYPE_BOOLEAN, FALSE);
1621   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1622                                 G_TYPE_BOOLEAN, TRUE,
1623                                 G_TYPE_BOOLEAN, TRUE,
1624                                 G_TYPE_BOOLEAN, TRUE);
1625   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1626                                 G_TYPE_BOOLEAN, TRUE,
1627                                 G_TYPE_BOOLEAN, TRUE,
1628                                 G_TYPE_BOOLEAN, TRUE);
1629   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1630                                 "expand-collapse-cursor-row", 3,
1631                                 G_TYPE_BOOLEAN, FALSE,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE);
1634   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1635                                 "expand-collapse-cursor-row", 3,
1636                                 G_TYPE_BOOLEAN, FALSE,
1637                                 G_TYPE_BOOLEAN, TRUE,
1638                                 G_TYPE_BOOLEAN, TRUE);
1639   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1640                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651
1652   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1653                                 G_TYPE_BOOLEAN, TRUE,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, FALSE);
1656   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1657                                 G_TYPE_BOOLEAN, TRUE,
1658                                 G_TYPE_BOOLEAN, FALSE,
1659                                 G_TYPE_BOOLEAN, TRUE);
1660   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1661                                 G_TYPE_BOOLEAN, TRUE,
1662                                 G_TYPE_BOOLEAN, FALSE,
1663                                 G_TYPE_BOOLEAN, FALSE);
1664   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1665                                 G_TYPE_BOOLEAN, TRUE,
1666                                 G_TYPE_BOOLEAN, FALSE,
1667                                 G_TYPE_BOOLEAN, TRUE);
1668   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1669                                 "expand-collapse-cursor-row", 3,
1670                                 G_TYPE_BOOLEAN, FALSE,
1671                                 G_TYPE_BOOLEAN, FALSE,
1672                                 G_TYPE_BOOLEAN, TRUE);
1673   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1674                                 "expand-collapse-cursor-row", 3,
1675                                 G_TYPE_BOOLEAN, FALSE,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, TRUE);
1678   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1679                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690
1691   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1692   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1693
1694   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1695
1696   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1697
1698   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1699
1700   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1701 }
1702
1703 static void
1704 gtk_tree_view_init (GtkTreeView *tree_view)
1705 {
1706   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1707
1708   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1709   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1710
1711   tree_view->priv->show_expanders = TRUE;
1712   tree_view->priv->draw_keyfocus = TRUE;
1713   tree_view->priv->headers_visible = TRUE;
1714
1715   /* We need some padding */
1716   tree_view->priv->dy = 0;
1717   tree_view->priv->cursor_offset = 0;
1718   tree_view->priv->n_columns = 0;
1719   tree_view->priv->header_height = 1;
1720   tree_view->priv->x_drag = 0;
1721   tree_view->priv->drag_pos = -1;
1722   tree_view->priv->header_has_focus = FALSE;
1723   tree_view->priv->pressed_button = -1;
1724   tree_view->priv->press_start_x = -1;
1725   tree_view->priv->press_start_y = -1;
1726   tree_view->priv->reorderable = FALSE;
1727   tree_view->priv->presize_handler_timer = 0;
1728   tree_view->priv->scroll_sync_timer = 0;
1729   tree_view->priv->fixed_height = -1;
1730   tree_view->priv->fixed_height_mode = FALSE;
1731   tree_view->priv->fixed_height_check = 0;
1732   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1733   tree_view->priv->enable_search = TRUE;
1734   tree_view->priv->search_column = -1;
1735   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1736   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1737   tree_view->priv->search_custom_entry_set = FALSE;
1738   tree_view->priv->typeselect_flush_timeout = 0;
1739   tree_view->priv->init_hadjust_value = TRUE;
1740   tree_view->priv->width = 0;
1741
1742   tree_view->priv->hover_selection = FALSE;
1743   tree_view->priv->hover_expand = FALSE;
1744
1745   tree_view->priv->level_indentation = 0;
1746
1747   tree_view->priv->rubber_banding_enable = FALSE;
1748
1749   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1750   tree_view->priv->tree_lines_enabled = FALSE;
1751
1752   tree_view->priv->tooltip_column = -1;
1753
1754   tree_view->priv->post_validation_flag = FALSE;
1755
1756   tree_view->priv->last_button_x = -1;
1757   tree_view->priv->last_button_y = -1;
1758
1759   tree_view->priv->event_last_x = -10000;
1760   tree_view->priv->event_last_y = -10000;
1761
1762   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1763   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1764 }
1765
1766 \f
1767
1768 /* GObject Methods
1769  */
1770
1771 static void
1772 gtk_tree_view_set_property (GObject         *object,
1773                             guint            prop_id,
1774                             const GValue    *value,
1775                             GParamSpec      *pspec)
1776 {
1777   GtkTreeView *tree_view;
1778
1779   tree_view = GTK_TREE_VIEW (object);
1780
1781   switch (prop_id)
1782     {
1783     case PROP_MODEL:
1784       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1785       break;
1786     case PROP_HADJUSTMENT:
1787       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1788       break;
1789     case PROP_VADJUSTMENT:
1790       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HSCROLL_POLICY:
1793       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1794       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1795       break;
1796     case PROP_VSCROLL_POLICY:
1797       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1798       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1799       break;
1800     case PROP_HEADERS_VISIBLE:
1801       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1802       break;
1803     case PROP_HEADERS_CLICKABLE:
1804       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1805       break;
1806     case PROP_EXPANDER_COLUMN:
1807       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1808       break;
1809     case PROP_REORDERABLE:
1810       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_RULES_HINT:
1813       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1814       break;
1815     case PROP_ENABLE_SEARCH:
1816       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_SEARCH_COLUMN:
1819       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1820       break;
1821     case PROP_FIXED_HEIGHT_MODE:
1822       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_HOVER_SELECTION:
1825       tree_view->priv->hover_selection = g_value_get_boolean (value);
1826       break;
1827     case PROP_HOVER_EXPAND:
1828       tree_view->priv->hover_expand = g_value_get_boolean (value);
1829       break;
1830     case PROP_SHOW_EXPANDERS:
1831       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1832       break;
1833     case PROP_LEVEL_INDENTATION:
1834       tree_view->priv->level_indentation = g_value_get_int (value);
1835       break;
1836     case PROP_RUBBER_BANDING:
1837       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1838       break;
1839     case PROP_ENABLE_GRID_LINES:
1840       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1841       break;
1842     case PROP_ENABLE_TREE_LINES:
1843       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1844       break;
1845     case PROP_TOOLTIP_COLUMN:
1846       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1847       break;
1848     default:
1849       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1850       break;
1851     }
1852 }
1853
1854 static void
1855 gtk_tree_view_get_property (GObject    *object,
1856                             guint       prop_id,
1857                             GValue     *value,
1858                             GParamSpec *pspec)
1859 {
1860   GtkTreeView *tree_view;
1861
1862   tree_view = GTK_TREE_VIEW (object);
1863
1864   switch (prop_id)
1865     {
1866     case PROP_MODEL:
1867       g_value_set_object (value, tree_view->priv->model);
1868       break;
1869     case PROP_HADJUSTMENT:
1870       g_value_set_object (value, tree_view->priv->hadjustment);
1871       break;
1872     case PROP_VADJUSTMENT:
1873       g_value_set_object (value, tree_view->priv->vadjustment);
1874       break;
1875     case PROP_HSCROLL_POLICY:
1876       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1877       break;
1878     case PROP_VSCROLL_POLICY:
1879       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1880       break;
1881     case PROP_HEADERS_VISIBLE:
1882       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1883       break;
1884     case PROP_HEADERS_CLICKABLE:
1885       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1886       break;
1887     case PROP_EXPANDER_COLUMN:
1888       g_value_set_object (value, tree_view->priv->expander_column);
1889       break;
1890     case PROP_REORDERABLE:
1891       g_value_set_boolean (value, tree_view->priv->reorderable);
1892       break;
1893     case PROP_RULES_HINT:
1894       g_value_set_boolean (value, tree_view->priv->has_rules);
1895       break;
1896     case PROP_ENABLE_SEARCH:
1897       g_value_set_boolean (value, tree_view->priv->enable_search);
1898       break;
1899     case PROP_SEARCH_COLUMN:
1900       g_value_set_int (value, tree_view->priv->search_column);
1901       break;
1902     case PROP_FIXED_HEIGHT_MODE:
1903       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1904       break;
1905     case PROP_HOVER_SELECTION:
1906       g_value_set_boolean (value, tree_view->priv->hover_selection);
1907       break;
1908     case PROP_HOVER_EXPAND:
1909       g_value_set_boolean (value, tree_view->priv->hover_expand);
1910       break;
1911     case PROP_SHOW_EXPANDERS:
1912       g_value_set_boolean (value, tree_view->priv->show_expanders);
1913       break;
1914     case PROP_LEVEL_INDENTATION:
1915       g_value_set_int (value, tree_view->priv->level_indentation);
1916       break;
1917     case PROP_RUBBER_BANDING:
1918       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1919       break;
1920     case PROP_ENABLE_GRID_LINES:
1921       g_value_set_enum (value, tree_view->priv->grid_lines);
1922       break;
1923     case PROP_ENABLE_TREE_LINES:
1924       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1925       break;
1926     case PROP_TOOLTIP_COLUMN:
1927       g_value_set_int (value, tree_view->priv->tooltip_column);
1928       break;
1929     default:
1930       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1931       break;
1932     }
1933 }
1934
1935 static void
1936 gtk_tree_view_finalize (GObject *object)
1937 {
1938   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1939 }
1940
1941
1942 static GtkBuildableIface *parent_buildable_iface;
1943
1944 static void
1945 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1946 {
1947   parent_buildable_iface = g_type_interface_peek_parent (iface);
1948   iface->add_child = gtk_tree_view_buildable_add_child;
1949   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1950 }
1951
1952 static void
1953 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1954                                    GtkBuilder  *builder,
1955                                    GObject     *child,
1956                                    const gchar *type)
1957 {
1958   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1959 }
1960
1961 static GObject *
1962 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1963                                             GtkBuilder        *builder,
1964                                             const gchar       *childname)
1965 {
1966     if (strcmp (childname, "selection") == 0)
1967       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1968
1969     return parent_buildable_iface->get_internal_child (buildable,
1970                                                        builder,
1971                                                        childname);
1972 }
1973
1974 /* GtkWidget Methods
1975  */
1976
1977 static void
1978 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1979 {
1980   _gtk_rbtree_free (tree_view->priv->tree);
1981
1982   tree_view->priv->tree = NULL;
1983   tree_view->priv->button_pressed_node = NULL;
1984   tree_view->priv->button_pressed_tree = NULL;
1985   tree_view->priv->prelight_tree = NULL;
1986   tree_view->priv->prelight_node = NULL;
1987   tree_view->priv->expanded_collapsed_node = NULL;
1988   tree_view->priv->expanded_collapsed_tree = NULL;
1989 }
1990
1991 static void
1992 gtk_tree_view_destroy (GtkWidget *widget)
1993 {
1994   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1995   GList *list;
1996
1997   gtk_tree_view_stop_editing (tree_view, TRUE);
1998
1999   if (tree_view->priv->columns != NULL)
2000     {
2001       list = tree_view->priv->columns;
2002       while (list)
2003         {
2004           GtkTreeViewColumn *column;
2005           column = GTK_TREE_VIEW_COLUMN (list->data);
2006           list = list->next;
2007           gtk_tree_view_remove_column (tree_view, column);
2008         }
2009       tree_view->priv->columns = NULL;
2010     }
2011
2012   if (tree_view->priv->tree != NULL)
2013     {
2014       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2015
2016       gtk_tree_view_free_rbtree (tree_view);
2017     }
2018
2019   if (tree_view->priv->selection != NULL)
2020     {
2021       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2022       g_object_unref (tree_view->priv->selection);
2023       tree_view->priv->selection = NULL;
2024     }
2025
2026   if (tree_view->priv->scroll_to_path != NULL)
2027     {
2028       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2029       tree_view->priv->scroll_to_path = NULL;
2030     }
2031
2032   if (tree_view->priv->drag_dest_row != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2035       tree_view->priv->drag_dest_row = NULL;
2036     }
2037
2038   if (tree_view->priv->top_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->top_row);
2041       tree_view->priv->top_row = NULL;
2042     }
2043
2044   if (tree_view->priv->column_drop_func_data &&
2045       tree_view->priv->column_drop_func_data_destroy)
2046     {
2047       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2048       tree_view->priv->column_drop_func_data = NULL;
2049     }
2050
2051   if (tree_view->priv->destroy_count_destroy &&
2052       tree_view->priv->destroy_count_data)
2053     {
2054       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2055       tree_view->priv->destroy_count_data = NULL;
2056     }
2057
2058   gtk_tree_row_reference_free (tree_view->priv->cursor);
2059   tree_view->priv->cursor = NULL;
2060
2061   gtk_tree_row_reference_free (tree_view->priv->anchor);
2062   tree_view->priv->anchor = NULL;
2063
2064   /* destroy interactive search dialog */
2065   if (tree_view->priv->search_window)
2066     {
2067       gtk_widget_destroy (tree_view->priv->search_window);
2068       tree_view->priv->search_window = NULL;
2069       tree_view->priv->search_entry = NULL;
2070       if (tree_view->priv->typeselect_flush_timeout)
2071         {
2072           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2073           tree_view->priv->typeselect_flush_timeout = 0;
2074         }
2075     }
2076
2077   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2078     {
2079       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2080       tree_view->priv->search_user_data = NULL;
2081     }
2082
2083   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2084     {
2085       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2086       tree_view->priv->search_position_user_data = NULL;
2087     }
2088
2089   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2090     {
2091       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2092       tree_view->priv->row_separator_data = NULL;
2093     }
2094
2095   gtk_tree_view_set_model (tree_view, NULL);
2096
2097   if (tree_view->priv->hadjustment)
2098     {
2099       g_object_unref (tree_view->priv->hadjustment);
2100       tree_view->priv->hadjustment = NULL;
2101     }
2102   if (tree_view->priv->vadjustment)
2103     {
2104       g_object_unref (tree_view->priv->vadjustment);
2105       tree_view->priv->vadjustment = NULL;
2106     }
2107
2108   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2109 }
2110
2111 /* GtkWidget::map helper */
2112 static void
2113 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2114 {
2115   GList *list;
2116
2117   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2118
2119   if (tree_view->priv->headers_visible)
2120     {
2121       GtkTreeViewColumn *column;
2122       GtkWidget         *button;
2123       GdkWindow         *window;
2124
2125       for (list = tree_view->priv->columns; list; list = list->next)
2126         {
2127           column = list->data;
2128           button = gtk_tree_view_column_get_button (column);
2129
2130           if (gtk_tree_view_column_get_visible (column) && button)
2131             gtk_widget_show_now (button);
2132
2133           if (gtk_widget_get_visible (button) &&
2134               !gtk_widget_get_mapped (button))
2135             gtk_widget_map (button);
2136         }
2137       for (list = tree_view->priv->columns; list; list = list->next)
2138         {
2139           column = list->data;
2140           if (gtk_tree_view_column_get_visible (column) == FALSE)
2141             continue;
2142
2143           window = _gtk_tree_view_column_get_window (column);
2144           if (gtk_tree_view_column_get_resizable (column))
2145             {
2146               gdk_window_raise (window);
2147               gdk_window_show (window);
2148             }
2149           else
2150             gdk_window_hide (window);
2151         }
2152       gdk_window_show (tree_view->priv->header_window);
2153     }
2154 }
2155
2156 static void
2157 gtk_tree_view_map (GtkWidget *widget)
2158 {
2159   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2160   GList *tmp_list;
2161
2162   gtk_widget_set_mapped (widget, TRUE);
2163
2164   tmp_list = tree_view->priv->children;
2165   while (tmp_list)
2166     {
2167       GtkTreeViewChild *child = tmp_list->data;
2168       tmp_list = tmp_list->next;
2169
2170       if (gtk_widget_get_visible (child->widget))
2171         {
2172           if (!gtk_widget_get_mapped (child->widget))
2173             gtk_widget_map (child->widget);
2174         }
2175     }
2176   gdk_window_show (tree_view->priv->bin_window);
2177
2178   gtk_tree_view_map_buttons (tree_view);
2179
2180   gdk_window_show (gtk_widget_get_window (widget));
2181 }
2182
2183 static void
2184 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2185 {
2186   GtkStyleContext *context;
2187
2188   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2189
2190   gtk_style_context_save (context);
2191   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2192   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2193   gtk_style_context_restore (context);
2194
2195   gtk_style_context_set_background (context, tree_view->priv->header_window);
2196 }
2197
2198 static void
2199 gtk_tree_view_realize (GtkWidget *widget)
2200 {
2201   GtkAllocation allocation;
2202   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2203   GdkWindow *window;
2204   GdkWindowAttr attributes;
2205   GList *tmp_list;
2206   gint attributes_mask;
2207
2208   gtk_widget_set_realized (widget, TRUE);
2209
2210   gtk_widget_get_allocation (widget, &allocation);
2211
2212   /* Make the main, clipping window */
2213   attributes.window_type = GDK_WINDOW_CHILD;
2214   attributes.x = allocation.x;
2215   attributes.y = allocation.y;
2216   attributes.width = allocation.width;
2217   attributes.height = allocation.height;
2218   attributes.wclass = GDK_INPUT_OUTPUT;
2219   attributes.visual = gtk_widget_get_visual (widget);
2220   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2221
2222   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2223
2224   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2225                            &attributes, attributes_mask);
2226   gtk_widget_set_window (widget, window);
2227   gdk_window_set_user_data (window, widget);
2228
2229   gtk_widget_get_allocation (widget, &allocation);
2230
2231   /* Make the window for the tree */
2232   attributes.x = 0;
2233   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2234   attributes.width = MAX (tree_view->priv->width, allocation.width);
2235   attributes.height = allocation.height;
2236   attributes.event_mask = (GDK_EXPOSURE_MASK |
2237                            GDK_SCROLL_MASK |
2238                            GDK_POINTER_MOTION_MASK |
2239                            GDK_ENTER_NOTIFY_MASK |
2240                            GDK_LEAVE_NOTIFY_MASK |
2241                            GDK_BUTTON_PRESS_MASK |
2242                            GDK_BUTTON_RELEASE_MASK |
2243                            gtk_widget_get_events (widget));
2244
2245   tree_view->priv->bin_window = gdk_window_new (window,
2246                                                 &attributes, attributes_mask);
2247   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2248
2249   gtk_widget_get_allocation (widget, &allocation);
2250
2251   /* Make the column header window */
2252   attributes.x = 0;
2253   attributes.y = 0;
2254   attributes.width = MAX (tree_view->priv->width, allocation.width);
2255   attributes.height = tree_view->priv->header_height;
2256   attributes.event_mask = (GDK_EXPOSURE_MASK |
2257                            GDK_SCROLL_MASK |
2258                            GDK_ENTER_NOTIFY_MASK |
2259                            GDK_LEAVE_NOTIFY_MASK |
2260                            GDK_BUTTON_PRESS_MASK |
2261                            GDK_BUTTON_RELEASE_MASK |
2262                            GDK_KEY_PRESS_MASK |
2263                            GDK_KEY_RELEASE_MASK |
2264                            gtk_widget_get_events (widget));
2265
2266   tree_view->priv->header_window = gdk_window_new (window,
2267                                                    &attributes, attributes_mask);
2268   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2269
2270   gtk_tree_view_ensure_background (tree_view);
2271
2272   tmp_list = tree_view->priv->children;
2273   while (tmp_list)
2274     {
2275       GtkTreeViewChild *child = tmp_list->data;
2276       tmp_list = tmp_list->next;
2277
2278       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2279     }
2280
2281   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2282     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2283
2284   /* Need to call those here, since they create GCs */
2285   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2286   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2287
2288   install_presize_handler (tree_view);
2289 }
2290
2291 static void
2292 gtk_tree_view_unrealize (GtkWidget *widget)
2293 {
2294   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2295   GtkTreeViewPrivate *priv = tree_view->priv;
2296   GtkStyleContext *context;
2297   GList *list;
2298
2299   if (priv->scroll_timeout != 0)
2300     {
2301       g_source_remove (priv->scroll_timeout);
2302       priv->scroll_timeout = 0;
2303     }
2304
2305   if (priv->auto_expand_timeout != 0)
2306     {
2307       g_source_remove (priv->auto_expand_timeout);
2308       priv->auto_expand_timeout = 0;
2309     }
2310
2311   if (priv->open_dest_timeout != 0)
2312     {
2313       g_source_remove (priv->open_dest_timeout);
2314       priv->open_dest_timeout = 0;
2315     }
2316
2317   context = gtk_widget_get_style_context (widget);
2318   gtk_style_context_cancel_animations (context, NULL);
2319
2320   if (priv->presize_handler_timer != 0)
2321     {
2322       g_source_remove (priv->presize_handler_timer);
2323       priv->presize_handler_timer = 0;
2324     }
2325
2326   if (priv->validate_rows_timer != 0)
2327     {
2328       g_source_remove (priv->validate_rows_timer);
2329       priv->validate_rows_timer = 0;
2330     }
2331
2332   if (priv->scroll_sync_timer != 0)
2333     {
2334       g_source_remove (priv->scroll_sync_timer);
2335       priv->scroll_sync_timer = 0;
2336     }
2337
2338   if (priv->typeselect_flush_timeout)
2339     {
2340       g_source_remove (priv->typeselect_flush_timeout);
2341       priv->typeselect_flush_timeout = 0;
2342     }
2343
2344   for (list = priv->columns; list; list = list->next)
2345     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2346
2347   gdk_window_set_user_data (priv->bin_window, NULL);
2348   gdk_window_destroy (priv->bin_window);
2349   priv->bin_window = NULL;
2350
2351   gdk_window_set_user_data (priv->header_window, NULL);
2352   gdk_window_destroy (priv->header_window);
2353   priv->header_window = NULL;
2354
2355   if (priv->drag_window)
2356     {
2357       gdk_window_set_user_data (priv->drag_window, NULL);
2358       gdk_window_destroy (priv->drag_window);
2359       priv->drag_window = NULL;
2360     }
2361
2362   if (priv->drag_highlight_window)
2363     {
2364       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2365       gdk_window_destroy (priv->drag_highlight_window);
2366       priv->drag_highlight_window = NULL;
2367     }
2368
2369   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2370 }
2371
2372 /* GtkWidget::size_request helper */
2373 static void
2374 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2375 {
2376   GList *list;
2377
2378   tree_view->priv->header_height = 0;
2379
2380   for (list = tree_view->priv->columns; list; list = list->next)
2381     {
2382       GtkRequisition     requisition;
2383       GtkTreeViewColumn *column = list->data;
2384       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2385
2386       if (button == NULL)
2387         continue;
2388
2389       gtk_widget_get_preferred_size (button, &requisition, NULL);
2390       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2391     }
2392 }
2393
2394
2395 /* Called only by ::size_request */
2396 static void
2397 gtk_tree_view_update_size (GtkTreeView *tree_view)
2398 {
2399   GList *list;
2400   GtkTreeViewColumn *column;
2401   gint i;
2402
2403   if (tree_view->priv->model == NULL)
2404     {
2405       tree_view->priv->width = 0;
2406       tree_view->priv->prev_width = 0;
2407       tree_view->priv->height = 0;
2408       return;
2409     }
2410
2411   tree_view->priv->prev_width = tree_view->priv->width;
2412   tree_view->priv->width = 0;
2413
2414   /* keep this in sync with size_allocate below */
2415   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2416     {
2417       column = list->data;
2418       if (!gtk_tree_view_column_get_visible (column))
2419         continue;
2420
2421       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2422     }
2423
2424   if (tree_view->priv->tree == NULL)
2425     tree_view->priv->height = 0;
2426   else
2427     tree_view->priv->height = tree_view->priv->tree->root->offset;
2428 }
2429
2430 static void
2431 gtk_tree_view_size_request (GtkWidget      *widget,
2432                             GtkRequisition *requisition,
2433                             gboolean        may_validate)
2434 {
2435   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2436
2437   if (may_validate)
2438     {
2439       /* we validate some rows initially just to make sure we have some size.
2440        * In practice, with a lot of static lists, this should get a good width.
2441        */
2442       do_validate_rows (tree_view, FALSE);
2443     }
2444
2445   gtk_tree_view_size_request_columns (tree_view);
2446   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2447
2448   requisition->width = tree_view->priv->width;
2449   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2450 }
2451
2452 static void
2453 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2454                                    gint      *minimum,
2455                                    gint      *natural)
2456 {
2457   GtkRequisition requisition;
2458
2459   gtk_tree_view_size_request (widget, &requisition, TRUE);
2460
2461   *minimum = *natural = requisition.width;
2462 }
2463
2464 static void
2465 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2466                                     gint      *minimum,
2467                                     gint      *natural)
2468 {
2469   GtkRequisition requisition;
2470
2471   gtk_tree_view_size_request (widget, &requisition, TRUE);
2472
2473   *minimum = *natural = requisition.height;
2474 }
2475
2476 static int
2477 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2478 {
2479   int width = 0;
2480   GList *list;
2481   gboolean rtl;
2482
2483   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2484   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2485        list->data != tree_view->priv->expander_column;
2486        list = (rtl ? list->prev : list->next))
2487     {
2488       GtkTreeViewColumn *column = list->data;
2489
2490       width += gtk_tree_view_column_get_width (column);
2491     }
2492
2493   return width;
2494 }
2495
2496 /* GtkWidget::size_allocate helper */
2497 static void
2498 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2499                                      gboolean  *width_changed)
2500 {
2501   GtkTreeView *tree_view;
2502   GList *list, *first_column, *last_column;
2503   GtkTreeViewColumn *column;
2504   GtkAllocation widget_allocation;
2505   gint width = 0;
2506   gint extra, extra_per_column, extra_for_last;
2507   gint full_requested_width = 0;
2508   gint number_of_expand_columns = 0;
2509   gboolean rtl;
2510   gboolean update_expand;
2511
2512   tree_view = GTK_TREE_VIEW (widget);
2513
2514   for (last_column = g_list_last (tree_view->priv->columns);
2515        last_column &&
2516        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2517        last_column = last_column->prev)
2518     ;
2519   if (last_column == NULL)
2520     return;
2521
2522   for (first_column = g_list_first (tree_view->priv->columns);
2523        first_column &&
2524        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2525        first_column = first_column->next)
2526     ;
2527
2528   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2529
2530   /* find out how many extra space and expandable columns we have */
2531   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2532     {
2533       column = (GtkTreeViewColumn *)list->data;
2534
2535       if (!gtk_tree_view_column_get_visible (column))
2536         continue;
2537
2538       full_requested_width += _gtk_tree_view_column_request_width (column);
2539
2540       if (gtk_tree_view_column_get_expand (column))
2541         number_of_expand_columns++;
2542     }
2543
2544   /* Only update the expand value if the width of the widget has changed,
2545    * or the number of expand columns has changed, or if there are no expand
2546    * columns, or if we didn't have an size-allocation yet after the
2547    * last validated node.
2548    */
2549   update_expand = (width_changed && *width_changed == TRUE)
2550       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2551       || number_of_expand_columns == 0
2552       || tree_view->priv->post_validation_flag == TRUE;
2553
2554   tree_view->priv->post_validation_flag = FALSE;
2555
2556   gtk_widget_get_allocation (widget, &widget_allocation);
2557   if (!update_expand)
2558     {
2559       extra = tree_view->priv->last_extra_space;
2560       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2561     }
2562   else
2563     {
2564       extra = MAX (widget_allocation.width - full_requested_width, 0);
2565       extra_for_last = 0;
2566
2567       tree_view->priv->last_extra_space = extra;
2568     }
2569
2570   if (number_of_expand_columns > 0)
2571     extra_per_column = extra/number_of_expand_columns;
2572   else
2573     extra_per_column = 0;
2574
2575   if (update_expand)
2576     {
2577       tree_view->priv->last_extra_space_per_column = extra_per_column;
2578       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2579     }
2580
2581   for (list = (rtl ? last_column : first_column);
2582        list != (rtl ? first_column->prev : last_column->next);
2583        list = (rtl ? list->prev : list->next))
2584     {
2585       gint column_width;
2586
2587       column = list->data;
2588
2589       if (!gtk_tree_view_column_get_visible (column))
2590         continue;
2591
2592       /* We need to handle the dragged button specially.
2593        */
2594       if (column == tree_view->priv->drag_column)
2595         {
2596           GtkAllocation drag_allocation;
2597           GtkWidget    *button;
2598
2599           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2600
2601           drag_allocation.x = 0;
2602           drag_allocation.y = 0;
2603           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2604           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2605           gtk_widget_size_allocate (button, &drag_allocation);
2606           width += drag_allocation.width;
2607           continue;
2608         }
2609
2610       column_width = _gtk_tree_view_column_request_width (column);
2611
2612       if (gtk_tree_view_column_get_expand (column))
2613         {
2614           if (number_of_expand_columns == 1)
2615             {
2616               /* We add the remander to the last column as
2617                * */
2618               column_width += extra;
2619             }
2620           else
2621             {
2622               column_width += extra_per_column;
2623               extra -= extra_per_column;
2624               number_of_expand_columns --;
2625             }
2626         }
2627       else if (number_of_expand_columns == 0 &&
2628                list == last_column)
2629         {
2630           column_width += extra;
2631         }
2632
2633       /* In addition to expand, the last column can get even more
2634        * extra space so all available space is filled up.
2635        */
2636       if (extra_for_last > 0 && list == last_column)
2637         column_width += extra_for_last;
2638
2639       _gtk_tree_view_column_allocate (column, width, column_width);
2640
2641       width += column_width;
2642     }
2643
2644   /* We change the width here.  The user might have been resizing columns,
2645    * which changes the total width of the tree view.  This is of
2646    * importance for getting the horizontal scroll bar right.
2647    */
2648   if (tree_view->priv->width != width)
2649     {
2650       tree_view->priv->width = width;
2651       if (width_changed)
2652         *width_changed = TRUE;
2653     }
2654 }
2655
2656
2657 static void
2658 gtk_tree_view_size_allocate (GtkWidget     *widget,
2659                              GtkAllocation *allocation)
2660 {
2661   GtkAllocation widget_allocation;
2662   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2663   GList *tmp_list;
2664   gboolean width_changed = FALSE;
2665   gint old_width;
2666
2667   gtk_widget_get_allocation (widget, &widget_allocation);
2668   old_width = widget_allocation.width;
2669   if (allocation->width != widget_allocation.width)
2670     width_changed = TRUE;
2671
2672   gtk_widget_set_allocation (widget, allocation);
2673
2674   tmp_list = tree_view->priv->children;
2675
2676   while (tmp_list)
2677     {
2678       GtkAllocation allocation;
2679
2680       GtkTreeViewChild *child = tmp_list->data;
2681       tmp_list = tmp_list->next;
2682
2683       /* totally ignore our child's requisition */
2684       allocation.x = child->x;
2685       allocation.y = child->y;
2686       allocation.width = child->width;
2687       allocation.height = child->height;
2688       gtk_widget_size_allocate (child->widget, &allocation);
2689     }
2690
2691   /* We size-allocate the columns first because the width of the
2692    * tree view (used in updating the adjustments below) might change.
2693    */
2694   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2695
2696   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2697   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2698                                 allocation->width);
2699   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2700                                      allocation->width * 0.9);
2701   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2702                                      allocation->width * 0.1);
2703   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2704   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2705                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2706                                  tree_view->priv->width));
2707   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2708
2709   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2710     {
2711       if (allocation->width < tree_view->priv->width)
2712         {
2713           if (tree_view->priv->init_hadjust_value)
2714             {
2715               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2716                                         MAX (tree_view->priv->width -
2717                                              allocation->width, 0));
2718               tree_view->priv->init_hadjust_value = FALSE;
2719             }
2720           else if (allocation->width != old_width)
2721             {
2722               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2723                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2724                                                0,
2725                                                tree_view->priv->width - allocation->width));
2726             }
2727           else
2728             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2729                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2730                                              0,
2731                                              tree_view->priv->width - allocation->width));
2732         }
2733       else
2734         {
2735           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2736           tree_view->priv->init_hadjust_value = TRUE;
2737         }
2738     }
2739   else
2740     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2741       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2742                                 MAX (tree_view->priv->width -
2743                                      allocation->width, 0));
2744
2745   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2746   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2747                                 allocation->height -
2748                                 gtk_tree_view_get_effective_header_height (tree_view));
2749   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2750                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2751   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2752                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2753   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2754   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2755                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2756                                  tree_view->priv->height));
2757   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2758
2759   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2760   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2761     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2762   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2763     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2764                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2765   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2766     gtk_tree_view_top_row_to_dy (tree_view);
2767   else
2768     gtk_tree_view_dy_to_top_row (tree_view);
2769
2770   if (gtk_widget_get_realized (widget))
2771     {
2772       gdk_window_move_resize (gtk_widget_get_window (widget),
2773                               allocation->x, allocation->y,
2774                               allocation->width, allocation->height);
2775       gdk_window_move_resize (tree_view->priv->header_window,
2776                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2777                               0,
2778                               MAX (tree_view->priv->width, allocation->width),
2779                               tree_view->priv->header_height);
2780       gdk_window_move_resize (tree_view->priv->bin_window,
2781                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2782                               gtk_tree_view_get_effective_header_height (tree_view),
2783                               MAX (tree_view->priv->width, allocation->width),
2784                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2785
2786       if (tree_view->priv->tree == NULL)
2787         invalidate_empty_focus (tree_view);
2788
2789       if (width_changed && tree_view->priv->expander_column)
2790         {
2791           /* Might seem awkward, but is the best heuristic I could come up
2792            * with.  Only if the width of the columns before the expander
2793            * changes, we will update the prelight status.  It is this
2794            * width that makes the expander move vertically.  Always updating
2795            * prelight status causes trouble with hover selections.
2796            */
2797           gint width_before_expander;
2798
2799           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2800
2801           if (tree_view->priv->prev_width_before_expander
2802               != width_before_expander)
2803               update_prelight (tree_view,
2804                                tree_view->priv->event_last_x,
2805                                tree_view->priv->event_last_y);
2806
2807           tree_view->priv->prev_width_before_expander = width_before_expander;
2808         }
2809     }
2810 }
2811
2812 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2813 static void
2814 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2815 {
2816   GtkWidget *widget = GTK_WIDGET (tree_view);
2817
2818   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2819     gtk_widget_grab_focus (widget);
2820   tree_view->priv->draw_keyfocus = 0;
2821 }
2822
2823 static inline gboolean
2824 row_is_separator (GtkTreeView *tree_view,
2825                   GtkTreeIter *iter,
2826                   GtkTreePath *path)
2827 {
2828   gboolean is_separator = FALSE;
2829
2830   if (tree_view->priv->row_separator_func)
2831     {
2832       GtkTreeIter tmpiter;
2833
2834       if (iter)
2835         tmpiter = *iter;
2836       else
2837         {
2838           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2839             return FALSE;
2840         }
2841
2842       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2843                                                           &tmpiter,
2844                                                           tree_view->priv->row_separator_data);
2845     }
2846
2847   return is_separator;
2848 }
2849
2850 static gboolean
2851 gtk_tree_view_button_press (GtkWidget      *widget,
2852                             GdkEventButton *event)
2853 {
2854   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2855   GList *list;
2856   GtkTreeViewColumn *column = NULL;
2857   gint i;
2858   GdkRectangle background_area;
2859   GdkRectangle cell_area;
2860   gint vertical_separator;
2861   gint horizontal_separator;
2862   gboolean path_is_selectable;
2863   gboolean rtl;
2864
2865   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2866   gtk_tree_view_stop_editing (tree_view, FALSE);
2867   gtk_widget_style_get (widget,
2868                         "vertical-separator", &vertical_separator,
2869                         "horizontal-separator", &horizontal_separator,
2870                         NULL);
2871
2872   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2873    * we're done handling the button press.
2874    */
2875
2876   if (event->window == tree_view->priv->bin_window)
2877     {
2878       GtkRBNode *node;
2879       GtkRBTree *tree;
2880       GtkTreePath *path;
2881       gint depth;
2882       gint new_y;
2883       gint y_offset;
2884       gint dval;
2885       gint pre_val, aft_val;
2886       GtkTreeViewColumn *column = NULL;
2887       gint column_handled_click = FALSE;
2888       gboolean row_double_click = FALSE;
2889       gboolean rtl;
2890       gboolean node_selected;
2891       GdkModifierType extend_mod_mask;
2892       GdkModifierType modify_mod_mask;
2893
2894       /* Empty tree? */
2895       if (tree_view->priv->tree == NULL)
2896         {
2897           grab_focus_and_unset_draw_keyfocus (tree_view);
2898           return TRUE;
2899         }
2900
2901       /* are we in an arrow? */
2902       if (tree_view->priv->prelight_node &&
2903           tree_view->priv->arrow_prelit &&
2904           gtk_tree_view_draw_expanders (tree_view))
2905         {
2906           if (event->button == 1)
2907             {
2908               gtk_grab_add (widget);
2909               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2910               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2911               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2912                                               tree_view->priv->prelight_tree,
2913                                               tree_view->priv->prelight_node);
2914             }
2915
2916           grab_focus_and_unset_draw_keyfocus (tree_view);
2917           return TRUE;
2918         }
2919
2920       /* find the node that was clicked */
2921       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2922       if (new_y < 0)
2923         new_y = 0;
2924       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2925
2926       if (node == NULL)
2927         {
2928           /* We clicked in dead space */
2929           grab_focus_and_unset_draw_keyfocus (tree_view);
2930           return TRUE;
2931         }
2932
2933       /* Get the path and the node */
2934       path = _gtk_tree_view_find_path (tree_view, tree, node);
2935       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2936
2937       if (!path_is_selectable)
2938         {
2939           gtk_tree_path_free (path);
2940           grab_focus_and_unset_draw_keyfocus (tree_view);
2941           return TRUE;
2942         }
2943
2944       depth = gtk_tree_path_get_depth (path);
2945       background_area.y = y_offset + event->y;
2946       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2947       background_area.x = 0;
2948
2949
2950       /* Let the column have a chance at selecting it. */
2951       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2952       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2953            list; list = (rtl ? list->prev : list->next))
2954         {
2955           GtkTreeViewColumn *candidate = list->data;
2956
2957           if (!gtk_tree_view_column_get_visible (candidate))
2958             continue;
2959
2960           background_area.width = gtk_tree_view_column_get_width (candidate);
2961           if ((background_area.x > (gint) event->x) ||
2962               (background_area.x + background_area.width <= (gint) event->x))
2963             {
2964               background_area.x += background_area.width;
2965               continue;
2966             }
2967
2968           /* we found the focus column */
2969           column = candidate;
2970           cell_area = background_area;
2971           cell_area.width -= horizontal_separator;
2972           cell_area.height -= vertical_separator;
2973           cell_area.x += horizontal_separator/2;
2974           cell_area.y += vertical_separator/2;
2975           if (gtk_tree_view_is_expander_column (tree_view, column))
2976             {
2977               if (!rtl)
2978                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2979               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2980
2981               if (gtk_tree_view_draw_expanders (tree_view))
2982                 {
2983                   if (!rtl)
2984                     cell_area.x += depth * tree_view->priv->expander_size;
2985                   cell_area.width -= depth * tree_view->priv->expander_size;
2986                 }
2987             }
2988           break;
2989         }
2990
2991       if (column == NULL)
2992         {
2993           gtk_tree_path_free (path);
2994           grab_focus_and_unset_draw_keyfocus (tree_view);
2995           return FALSE;
2996         }
2997
2998       tree_view->priv->focus_column = column;
2999
3000       /* decide if we edit */
3001       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3002           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3003         {
3004           GtkTreePath *anchor;
3005           GtkTreeIter iter;
3006
3007           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3008           gtk_tree_view_column_cell_set_cell_data (column,
3009                                                    tree_view->priv->model,
3010                                                    &iter,
3011                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3012                                                    node->children?TRUE:FALSE);
3013
3014           if (tree_view->priv->anchor)
3015             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3016           else
3017             anchor = NULL;
3018
3019           if ((anchor && !gtk_tree_path_compare (anchor, path))
3020               || !_gtk_tree_view_column_has_editable_cell (column))
3021             {
3022               GtkCellEditable *cell_editable = NULL;
3023
3024               /* FIXME: get the right flags */
3025               guint flags = 0;
3026
3027               if (_gtk_tree_view_column_cell_event (column,
3028                                                     (GdkEvent *)event,
3029                                                     &cell_area, flags))
3030                 {
3031                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3032                   cell_editable = gtk_cell_area_get_edit_widget (area);
3033
3034                   if (cell_editable != NULL)
3035                     {
3036                       gtk_tree_path_free (path);
3037                       gtk_tree_path_free (anchor);
3038                       return TRUE;
3039                     }
3040                   column_handled_click = TRUE;
3041                 }
3042             }
3043           if (anchor)
3044             gtk_tree_path_free (anchor);
3045         }
3046
3047       extend_mod_mask =
3048         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3049
3050       modify_mod_mask =
3051         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3052
3053       /* select */
3054       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3055       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3056
3057       /* we only handle selection modifications on the first button press
3058        */
3059       if (event->type == GDK_BUTTON_PRESS)
3060         {
3061           GtkCellRenderer *focus_cell;
3062
3063           if ((event->state & modify_mod_mask) == modify_mod_mask)
3064             tree_view->priv->modify_selection_pressed = TRUE;
3065           if ((event->state & extend_mod_mask) == extend_mod_mask)
3066             tree_view->priv->extend_selection_pressed = TRUE;
3067
3068           /* We update the focus cell here, this is also needed if the
3069            * column does not contain an editable cell.  In this case,
3070            * GtkCellArea did not receive the event for processing (and
3071            * could not update the focus cell).
3072            */
3073           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3074                                                               &cell_area,
3075                                                               &background_area,
3076                                                               event->x,
3077                                                               event->y);
3078
3079           if (focus_cell)
3080             gtk_tree_view_column_focus_cell (column, focus_cell);
3081
3082           if (event->state & modify_mod_mask)
3083             {
3084               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3085               gtk_tree_view_real_toggle_cursor_row (tree_view);
3086             }
3087           else if (event->state & extend_mod_mask)
3088             {
3089               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3090               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3091             }
3092           else
3093             {
3094               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
3095             }
3096
3097           tree_view->priv->modify_selection_pressed = FALSE;
3098           tree_view->priv->extend_selection_pressed = FALSE;
3099         }
3100
3101       /* the treeview may have been scrolled because of _set_cursor,
3102        * correct here
3103        */
3104
3105       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3106       dval = pre_val - aft_val;
3107
3108       cell_area.y += dval;
3109       background_area.y += dval;
3110
3111       /* Save press to possibly begin a drag
3112        */
3113       if (!column_handled_click &&
3114           !tree_view->priv->in_grab &&
3115           tree_view->priv->pressed_button < 0)
3116         {
3117           tree_view->priv->pressed_button = event->button;
3118           tree_view->priv->press_start_x = event->x;
3119           tree_view->priv->press_start_y = event->y;
3120
3121           if (tree_view->priv->rubber_banding_enable
3122               && !node_selected
3123               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3124             {
3125               tree_view->priv->press_start_y += tree_view->priv->dy;
3126               tree_view->priv->rubber_band_x = event->x;
3127               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3128               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3129
3130               if ((event->state & modify_mod_mask) == modify_mod_mask)
3131                 tree_view->priv->rubber_band_modify = TRUE;
3132               if ((event->state & extend_mod_mask) == extend_mod_mask)
3133                 tree_view->priv->rubber_band_extend = TRUE;
3134             }
3135         }
3136
3137       /* Test if a double click happened on the same row. */
3138       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3139         {
3140           int double_click_time, double_click_distance;
3141
3142           g_object_get (gtk_settings_get_default (),
3143                         "gtk-double-click-time", &double_click_time,
3144                         "gtk-double-click-distance", &double_click_distance,
3145                         NULL);
3146
3147           /* Same conditions as _gdk_event_button_generate */
3148           if (tree_view->priv->last_button_x != -1 &&
3149               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3150               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3151               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3152             {
3153               /* We do no longer compare paths of this row and the
3154                * row clicked previously.  We use the double click
3155                * distance to decide whether this is a valid click,
3156                * allowing the mouse to slightly move over another row.
3157                */
3158               row_double_click = TRUE;
3159
3160               tree_view->priv->last_button_time = 0;
3161               tree_view->priv->last_button_x = -1;
3162               tree_view->priv->last_button_y = -1;
3163             }
3164           else
3165             {
3166               tree_view->priv->last_button_time = event->time;
3167               tree_view->priv->last_button_x = event->x;
3168               tree_view->priv->last_button_y = event->y;
3169             }
3170         }
3171
3172       if (row_double_click)
3173         {
3174           gtk_grab_remove (widget);
3175           gtk_tree_view_row_activated (tree_view, path, column);
3176
3177           if (tree_view->priv->pressed_button == event->button)
3178             tree_view->priv->pressed_button = -1;
3179         }
3180
3181       gtk_tree_path_free (path);
3182
3183       /* If we activated the row through a double click we don't want to grab
3184        * focus back, as moving focus to another widget is pretty common.
3185        */
3186       if (!row_double_click)
3187         grab_focus_and_unset_draw_keyfocus (tree_view);
3188
3189       return TRUE;
3190     }
3191
3192   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3193    */
3194   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3195     {
3196       column = list->data;
3197       if (event->window == _gtk_tree_view_column_get_window (column) &&
3198           gtk_tree_view_column_get_resizable (column) &&
3199           _gtk_tree_view_column_get_window (column))
3200         {
3201           gpointer drag_data;
3202
3203           if (event->type == GDK_2BUTTON_PRESS &&
3204               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3205             {
3206               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3207               _gtk_tree_view_column_autosize (tree_view, column);
3208               return TRUE;
3209             }
3210
3211           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3212                                _gtk_tree_view_column_get_window (column),
3213                                GDK_OWNERSHIP_NONE,
3214                                FALSE,
3215                                GDK_POINTER_MOTION_HINT_MASK
3216                                 | GDK_BUTTON1_MOTION_MASK
3217                                 | GDK_BUTTON_RELEASE_MASK,
3218                                NULL,
3219                                event->time) != GDK_GRAB_SUCCESS)
3220             return FALSE;
3221
3222           gtk_grab_add (widget);
3223           tree_view->priv->in_column_resize = TRUE;
3224
3225           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3226                                                    tree_view->priv->last_extra_space_per_column);
3227
3228           /* block attached dnd signal handler */
3229           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3230           if (drag_data)
3231             g_signal_handlers_block_matched (widget,
3232                                              G_SIGNAL_MATCH_DATA,
3233                                              0, 0, NULL, NULL,
3234                                              drag_data);
3235
3236           tree_view->priv->drag_pos = i;
3237           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3238
3239           if (!gtk_widget_has_focus (widget))
3240             gtk_widget_grab_focus (widget);
3241
3242           return TRUE;
3243         }
3244     }
3245   return FALSE;
3246 }
3247
3248 /* GtkWidget::button_release_event helper */
3249 static gboolean
3250 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3251                                           GdkEventButton *event)
3252 {
3253   GtkTreeView *tree_view;
3254   GtkWidget *button;
3255   GList *l;
3256   gboolean rtl;
3257   GdkDevice *device, *other;
3258
3259   tree_view = GTK_TREE_VIEW (widget);
3260
3261   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3262   device = gdk_event_get_device ((GdkEvent*)event);
3263   other = gdk_device_get_associated_device (device);
3264   gdk_device_ungrab (device, event->time);
3265   gdk_device_ungrab (other, event->time);
3266
3267   /* Move the button back */
3268   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3269   g_object_ref (button);
3270   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3271   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3272   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3273   g_object_unref (button);
3274   gtk_widget_queue_resize (widget);
3275   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3276     {
3277       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3278       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3279     }
3280   else
3281     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282
3283   gtk_widget_grab_focus (button);
3284
3285   if (rtl)
3286     {
3287       if (tree_view->priv->cur_reorder &&
3288           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3289         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3290                                          tree_view->priv->cur_reorder->right_column);
3291     }
3292   else
3293     {
3294       if (tree_view->priv->cur_reorder &&
3295           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3296         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3297                                          tree_view->priv->cur_reorder->left_column);
3298     }
3299   tree_view->priv->drag_column = NULL;
3300   gdk_window_hide (tree_view->priv->drag_window);
3301
3302   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3303     g_slice_free (GtkTreeViewColumnReorder, l->data);
3304   g_list_free (tree_view->priv->column_drag_info);
3305   tree_view->priv->column_drag_info = NULL;
3306   tree_view->priv->cur_reorder = NULL;
3307
3308   if (tree_view->priv->drag_highlight_window)
3309     gdk_window_hide (tree_view->priv->drag_highlight_window);
3310
3311   /* Reset our flags */
3312   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3313   tree_view->priv->in_column_drag = FALSE;
3314
3315   return TRUE;
3316 }
3317
3318 /* GtkWidget::button_release_event helper */
3319 static gboolean
3320 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3321                                             GdkEventButton *event)
3322 {
3323   GtkTreeView *tree_view;
3324   gpointer drag_data;
3325
3326   tree_view = GTK_TREE_VIEW (widget);
3327
3328   tree_view->priv->drag_pos = -1;
3329
3330   /* unblock attached dnd signal handler */
3331   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3332   if (drag_data)
3333     g_signal_handlers_unblock_matched (widget,
3334                                        G_SIGNAL_MATCH_DATA,
3335                                        0, 0, NULL, NULL,
3336                                        drag_data);
3337
3338   tree_view->priv->in_column_resize = FALSE;
3339   gtk_grab_remove (widget);
3340   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3341   return TRUE;
3342 }
3343
3344 static gboolean
3345 gtk_tree_view_button_release (GtkWidget      *widget,
3346                               GdkEventButton *event)
3347 {
3348   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3349
3350   if (tree_view->priv->in_column_drag)
3351     return gtk_tree_view_button_release_drag_column (widget, event);
3352
3353   if (tree_view->priv->rubber_band_status)
3354     gtk_tree_view_stop_rubber_band (tree_view);
3355
3356   if (tree_view->priv->pressed_button == event->button)
3357     tree_view->priv->pressed_button = -1;
3358
3359   if (tree_view->priv->in_column_resize)
3360     return gtk_tree_view_button_release_column_resize (widget, event);
3361
3362   if (tree_view->priv->button_pressed_node == NULL)
3363     return FALSE;
3364
3365   if (event->button == 1)
3366     {
3367       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3368           tree_view->priv->arrow_prelit)
3369         {
3370           GtkTreePath *path = NULL;
3371
3372           path = _gtk_tree_view_find_path (tree_view,
3373                                            tree_view->priv->button_pressed_tree,
3374                                            tree_view->priv->button_pressed_node);
3375           /* Actually activate the node */
3376           if (tree_view->priv->button_pressed_node->children == NULL)
3377             gtk_tree_view_real_expand_row (tree_view, path,
3378                                            tree_view->priv->button_pressed_tree,
3379                                            tree_view->priv->button_pressed_node,
3380                                            FALSE, TRUE);
3381           else
3382             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3383                                              tree_view->priv->button_pressed_tree,
3384                                              tree_view->priv->button_pressed_node, TRUE);
3385           gtk_tree_path_free (path);
3386         }
3387
3388       gtk_grab_remove (widget);
3389       tree_view->priv->button_pressed_tree = NULL;
3390       tree_view->priv->button_pressed_node = NULL;
3391     }
3392
3393   return TRUE;
3394 }
3395
3396 static gboolean
3397 gtk_tree_view_grab_broken (GtkWidget          *widget,
3398                            GdkEventGrabBroken *event)
3399 {
3400   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3401
3402   if (tree_view->priv->in_column_drag)
3403     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3404
3405   if (tree_view->priv->in_column_resize)
3406     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3407
3408   return TRUE;
3409 }
3410
3411 #if 0
3412 static gboolean
3413 gtk_tree_view_configure (GtkWidget *widget,
3414                          GdkEventConfigure *event)
3415 {
3416   GtkTreeView *tree_view;
3417
3418   tree_view = GTK_TREE_VIEW (widget);
3419   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3420
3421   return FALSE;
3422 }
3423 #endif
3424
3425 /* GtkWidget::motion_event function set.
3426  */
3427
3428 static gboolean
3429 coords_are_over_arrow (GtkTreeView *tree_view,
3430                        GtkRBTree   *tree,
3431                        GtkRBNode   *node,
3432                        /* these are in bin window coords */
3433                        gint         x,
3434                        gint         y)
3435 {
3436   GdkRectangle arrow;
3437   gint x2;
3438
3439   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3440     return FALSE;
3441
3442   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3443     return FALSE;
3444
3445   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3446   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3447
3448   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3449
3450   arrow.width = x2 - arrow.x;
3451
3452   return (x >= arrow.x &&
3453           x < (arrow.x + arrow.width) &&
3454           y >= arrow.y &&
3455           y < (arrow.y + arrow.height));
3456 }
3457
3458 static gboolean
3459 auto_expand_timeout (gpointer data)
3460 {
3461   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3462   GtkTreePath *path;
3463
3464   if (tree_view->priv->prelight_node)
3465     {
3466       path = _gtk_tree_view_find_path (tree_view,
3467                                        tree_view->priv->prelight_tree,
3468                                        tree_view->priv->prelight_node);
3469
3470       if (tree_view->priv->prelight_node->children)
3471         gtk_tree_view_collapse_row (tree_view, path);
3472       else
3473         gtk_tree_view_expand_row (tree_view, path, FALSE);
3474
3475       gtk_tree_path_free (path);
3476     }
3477
3478   tree_view->priv->auto_expand_timeout = 0;
3479
3480   return FALSE;
3481 }
3482
3483 static void
3484 remove_auto_expand_timeout (GtkTreeView *tree_view)
3485 {
3486   if (tree_view->priv->auto_expand_timeout != 0)
3487     {
3488       g_source_remove (tree_view->priv->auto_expand_timeout);
3489       tree_view->priv->auto_expand_timeout = 0;
3490     }
3491 }
3492
3493 static void
3494 do_prelight (GtkTreeView *tree_view,
3495              GtkRBTree   *tree,
3496              GtkRBNode   *node,
3497              /* these are in bin_window coords */
3498              gint         x,
3499              gint         y)
3500 {
3501   if (tree_view->priv->prelight_tree == tree &&
3502       tree_view->priv->prelight_node == node)
3503     {
3504       /*  We are still on the same node,
3505           but we might need to take care of the arrow  */
3506
3507       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3508         {
3509           gboolean over_arrow;
3510
3511           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3512
3513           if (over_arrow != tree_view->priv->arrow_prelit)
3514             {
3515               if (over_arrow)
3516                 tree_view->priv->arrow_prelit = TRUE;
3517               else
3518                 tree_view->priv->arrow_prelit = FALSE;
3519
3520               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3521             }
3522         }
3523
3524       return;
3525     }
3526
3527   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3528     {
3529       /*  Unprelight the old node and arrow  */
3530
3531       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3532                              GTK_RBNODE_IS_PRELIT);
3533
3534       if (tree_view->priv->arrow_prelit
3535           && gtk_tree_view_draw_expanders (tree_view))
3536         {
3537           tree_view->priv->arrow_prelit = FALSE;
3538
3539           gtk_tree_view_queue_draw_arrow (tree_view,
3540                                           tree_view->priv->prelight_tree,
3541                                           tree_view->priv->prelight_node);
3542         }
3543
3544       _gtk_tree_view_queue_draw_node (tree_view,
3545                                       tree_view->priv->prelight_tree,
3546                                       tree_view->priv->prelight_node,
3547                                       NULL);
3548     }
3549
3550
3551   if (tree_view->priv->hover_expand)
3552     remove_auto_expand_timeout (tree_view);
3553
3554   /*  Set the new prelight values  */
3555   tree_view->priv->prelight_node = node;
3556   tree_view->priv->prelight_tree = tree;
3557
3558   if (!node || !tree)
3559     return;
3560
3561   /*  Prelight the new node and arrow  */
3562
3563   if (gtk_tree_view_draw_expanders (tree_view)
3564       && coords_are_over_arrow (tree_view, tree, node, x, y))
3565     {
3566       tree_view->priv->arrow_prelit = TRUE;
3567
3568       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3569     }
3570
3571   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3572
3573   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3574
3575   if (tree_view->priv->hover_expand)
3576     {
3577       tree_view->priv->auto_expand_timeout =
3578         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3579     }
3580 }
3581
3582 static void
3583 prelight_or_select (GtkTreeView *tree_view,
3584                     GtkRBTree   *tree,
3585                     GtkRBNode   *node,
3586                     /* these are in bin_window coords */
3587                     gint         x,
3588                     gint         y)
3589 {
3590   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3591
3592   if (tree_view->priv->hover_selection &&
3593       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3594       !(tree_view->priv->edited_column &&
3595         gtk_cell_area_get_edit_widget
3596         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3597     {
3598       if (node)
3599         {
3600           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3601             {
3602               GtkTreePath *path;
3603
3604               path = _gtk_tree_view_find_path (tree_view, tree, node);
3605               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3606               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3607                 {
3608                   tree_view->priv->draw_keyfocus = FALSE;
3609                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3610                 }
3611               gtk_tree_path_free (path);
3612             }
3613         }
3614
3615       else if (mode == GTK_SELECTION_SINGLE)
3616         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3617     }
3618
3619     do_prelight (tree_view, tree, node, x, y);
3620 }
3621
3622 static void
3623 ensure_unprelighted (GtkTreeView *tree_view)
3624 {
3625   do_prelight (tree_view,
3626                NULL, NULL,
3627                -1000, -1000); /* coords not possibly over an arrow */
3628
3629   g_assert (tree_view->priv->prelight_node == NULL);
3630 }
3631
3632 static void
3633 update_prelight (GtkTreeView *tree_view,
3634                  gint         x,
3635                  gint         y)
3636 {
3637   int new_y;
3638   GtkRBTree *tree;
3639   GtkRBNode *node;
3640
3641   if (tree_view->priv->tree == NULL)
3642     return;
3643
3644   if (x == -10000)
3645     {
3646       ensure_unprelighted (tree_view);
3647       return;
3648     }
3649
3650   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3651   if (new_y < 0)
3652     new_y = 0;
3653
3654   _gtk_rbtree_find_offset (tree_view->priv->tree,
3655                            new_y, &tree, &node);
3656
3657   if (node)
3658     prelight_or_select (tree_view, tree, node, x, y);
3659 }
3660
3661
3662
3663
3664 /* Our motion arrow is either a box (in the case of the original spot)
3665  * or an arrow.  It is expander_size wide.
3666  */
3667 /*
3668  * 11111111111111
3669  * 01111111111110
3670  * 00111111111100
3671  * 00011111111000
3672  * 00001111110000
3673  * 00000111100000
3674  * 00000111100000
3675  * 00000111100000
3676  * ~ ~ ~ ~ ~ ~ ~
3677  * 00000111100000
3678  * 00000111100000
3679  * 00000111100000
3680  * 00001111110000
3681  * 00011111111000
3682  * 00111111111100
3683  * 01111111111110
3684  * 11111111111111
3685  */
3686
3687 static void
3688 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3689 {
3690   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3691   GtkWidget *widget = GTK_WIDGET (tree_view);
3692   cairo_surface_t *mask_image;
3693   cairo_region_t *mask_region;
3694   gint x;
3695   gint y;
3696   gint width;
3697   gint height;
3698   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3699   GdkWindowAttr attributes;
3700   guint attributes_mask;
3701   cairo_t *cr;
3702
3703   if (!reorder ||
3704       reorder->left_column == tree_view->priv->drag_column ||
3705       reorder->right_column == tree_view->priv->drag_column)
3706     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3707   else if (reorder->left_column || reorder->right_column)
3708     {
3709       GtkAllocation left_allocation, right_allocation;
3710       GdkRectangle visible_rect;
3711       GtkWidget *button;
3712
3713       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3714       if (reorder->left_column)
3715         {
3716           button = gtk_tree_view_column_get_button (reorder->left_column);
3717           gtk_widget_get_allocation (button, &left_allocation);
3718           x = left_allocation.x + left_allocation.width;
3719         }
3720       else
3721         {
3722           button = gtk_tree_view_column_get_button (reorder->right_column);
3723           gtk_widget_get_allocation (button, &right_allocation);
3724           x = right_allocation.x;
3725         }
3726
3727       if (x < visible_rect.x)
3728         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3729       else if (x > visible_rect.x + visible_rect.width)
3730         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3731       else
3732         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3733     }
3734
3735   /* We want to draw the rectangle over the initial location. */
3736   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3737     {
3738       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3739         {
3740           GtkAllocation drag_allocation;
3741           GtkWidget    *button;
3742
3743           if (tree_view->priv->drag_highlight_window)
3744             {
3745               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3746                                         NULL);
3747               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3748             }
3749
3750           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3751           attributes.window_type = GDK_WINDOW_CHILD;
3752           attributes.wclass = GDK_INPUT_OUTPUT;
3753           attributes.x = tree_view->priv->drag_column_x;
3754           attributes.y = 0;
3755           gtk_widget_get_allocation (button, &drag_allocation);
3756           width = attributes.width = drag_allocation.width;
3757           height = attributes.height = drag_allocation.height;
3758           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3759           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3760           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3761           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3762           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3763
3764           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3765           cr = cairo_create (mask_image);
3766
3767           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3768           cairo_stroke (cr);
3769           cairo_destroy (cr);
3770
3771           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3772           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3773                                            mask_region, 0, 0);
3774
3775           cairo_region_destroy (mask_region);
3776           cairo_surface_destroy (mask_image);
3777
3778           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3779         }
3780     }
3781   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3782     {
3783       GtkAllocation button_allocation;
3784       GtkWidget    *button;
3785
3786       width = tree_view->priv->expander_size;
3787
3788       /* Get x, y, width, height of arrow */
3789       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3790       if (reorder->left_column)
3791         {
3792           button = gtk_tree_view_column_get_button (reorder->left_column);
3793           gtk_widget_get_allocation (button, &button_allocation);
3794           x += button_allocation.x + button_allocation.width - width/2;
3795           height = button_allocation.height;
3796         }
3797       else
3798         {
3799           button = gtk_tree_view_column_get_button (reorder->right_column);
3800           gtk_widget_get_allocation (button, &button_allocation);
3801           x += button_allocation.x - width/2;
3802           height = button_allocation.height;
3803         }
3804       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3805       height += tree_view->priv->expander_size;
3806
3807       /* Create the new window */
3808       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3809         {
3810           if (tree_view->priv->drag_highlight_window)
3811             {
3812               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3813                                         NULL);
3814               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3815             }
3816
3817           attributes.window_type = GDK_WINDOW_TEMP;
3818           attributes.wclass = GDK_INPUT_OUTPUT;
3819           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3820           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3821           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3822           attributes.x = x;
3823           attributes.y = y;
3824           attributes.width = width;
3825           attributes.height = height;
3826           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3827                                                                    &attributes, attributes_mask);
3828           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3829
3830           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3831
3832           cr = cairo_create (mask_image);
3833           cairo_move_to (cr, 0, 0);
3834           cairo_line_to (cr, width, 0);
3835           cairo_line_to (cr, width / 2., width / 2);
3836           cairo_move_to (cr, 0, height);
3837           cairo_line_to (cr, width, height);
3838           cairo_line_to (cr, width / 2., height - width / 2.);
3839           cairo_fill (cr);
3840           cairo_destroy (cr);
3841
3842           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3843           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3844                                            mask_region, 0, 0);
3845
3846           cairo_region_destroy (mask_region);
3847           cairo_surface_destroy (mask_image);
3848         }
3849
3850       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3851       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3852     }
3853   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3854            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3855     {
3856       GtkAllocation allocation;
3857       GtkWidget    *button;
3858
3859       width = tree_view->priv->expander_size;
3860
3861       /* Get x, y, width, height of arrow */
3862       width = width/2; /* remember, the arrow only takes half the available width */
3863       gdk_window_get_origin (gtk_widget_get_window (widget),
3864                              &x, &y);
3865       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3866         {
3867           gtk_widget_get_allocation (widget, &allocation);
3868           x += allocation.width - width;
3869         }
3870
3871       if (reorder->left_column)
3872         {
3873           button = gtk_tree_view_column_get_button (reorder->left_column);
3874           gtk_widget_get_allocation (button, &allocation);
3875           height = allocation.height;
3876         }
3877       else
3878         {
3879           button = gtk_tree_view_column_get_button (reorder->right_column);
3880           gtk_widget_get_allocation (button, &allocation);
3881           height = allocation.height;
3882         }
3883
3884       y -= tree_view->priv->expander_size;
3885       height += 2*tree_view->priv->expander_size;
3886
3887       /* Create the new window */
3888       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3889           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3890         {
3891           if (tree_view->priv->drag_highlight_window)
3892             {
3893               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3894                                         NULL);
3895               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3896             }
3897
3898           attributes.window_type = GDK_WINDOW_TEMP;
3899           attributes.wclass = GDK_INPUT_OUTPUT;
3900           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3901           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3902           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3903           attributes.x = x;
3904           attributes.y = y;
3905           attributes.width = width;
3906           attributes.height = height;
3907           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3908           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3909
3910           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3911
3912           cr = cairo_create (mask_image);
3913           /* mirror if we're on the left */
3914           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3915             {
3916               cairo_translate (cr, width, 0);
3917               cairo_scale (cr, -1, 1);
3918             }
3919           cairo_move_to (cr, 0, 0);
3920           cairo_line_to (cr, width, width);
3921           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3922           cairo_move_to (cr, 0, height);
3923           cairo_line_to (cr, width, height - width);
3924           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3925           cairo_fill (cr);
3926           cairo_destroy (cr);
3927
3928           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3929           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3930                                            mask_region, 0, 0);
3931
3932           cairo_region_destroy (mask_region);
3933           cairo_surface_destroy (mask_image);
3934         }
3935
3936       tree_view->priv->drag_column_window_state = arrow_type;
3937       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3938    }
3939   else
3940     {
3941       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3942       gdk_window_hide (tree_view->priv->drag_highlight_window);
3943       return;
3944     }
3945
3946   gdk_window_show (tree_view->priv->drag_highlight_window);
3947   gdk_window_raise (tree_view->priv->drag_highlight_window);
3948 }
3949
3950 static gboolean
3951 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3952                                     GdkEventMotion *event)
3953 {
3954   gint x;
3955   gint new_width;
3956   GtkTreeViewColumn *column;
3957   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3958
3959   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3960
3961   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3962     gdk_window_get_device_position (gtk_widget_get_window (widget),
3963                                     gdk_event_get_device ((GdkEvent *) event),
3964                                     &x, NULL, NULL);
3965   else
3966     x = event->x;
3967
3968   if (tree_view->priv->hadjustment)
3969     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3970
3971   new_width = gtk_tree_view_new_column_width (tree_view,
3972                                               tree_view->priv->drag_pos, &x);
3973   if (x != tree_view->priv->x_drag &&
3974       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3975     {
3976       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3977
3978       if (gtk_tree_view_column_get_expand (column))
3979         new_width -= tree_view->priv->last_extra_space_per_column;
3980
3981       _gtk_tree_view_column_set_resized_width (column, new_width);
3982
3983
3984       gtk_widget_queue_resize (widget);
3985     }
3986
3987   return FALSE;
3988 }
3989
3990
3991 static void
3992 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3993                                       GdkEvent    *event)
3994 {
3995   GtkTreeViewColumnReorder *reorder = NULL;
3996   GList *list;
3997   gint mouse_x;
3998
3999   gdk_window_get_device_position (tree_view->priv->header_window,
4000                                   gdk_event_get_device (event),
4001                                   &mouse_x, NULL, NULL);
4002   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4003     {
4004       reorder = (GtkTreeViewColumnReorder *) list->data;
4005       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4006         break;
4007       reorder = NULL;
4008     }
4009
4010   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4011       return;*/
4012
4013   tree_view->priv->cur_reorder = reorder;
4014   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4015 }
4016
4017 static void
4018 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4019 {
4020   GdkRectangle visible_rect;
4021   gint y;
4022   gint offset;
4023
4024   gdk_window_get_device_position (tree_view->priv->bin_window,
4025                                   gdk_device_manager_get_client_pointer (
4026                                     gdk_display_get_device_manager (
4027                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4028                                   NULL, &y, NULL);
4029   y += tree_view->priv->dy;
4030
4031   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4032
4033   /* see if we are near the edge. */
4034   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4035   if (offset > 0)
4036     {
4037       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4038       if (offset < 0)
4039         return;
4040     }
4041
4042   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4043                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4044 }
4045
4046 static gboolean
4047 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4048                                      GdkEvent    *event)
4049 {
4050   GdkRectangle visible_rect;
4051   gint x;
4052   gint offset;
4053
4054   gdk_window_get_device_position (tree_view->priv->bin_window,
4055                                   gdk_event_get_device (event),
4056                                   &x, NULL, NULL);
4057
4058   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4059
4060   /* See if we are near the edge. */
4061   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4062   if (offset > 0)
4063     {
4064       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4065       if (offset < 0)
4066         return TRUE;
4067     }
4068   offset = offset/3;
4069
4070   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4071                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4072
4073   return TRUE;
4074
4075 }
4076
4077 static gboolean
4078 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4079                                   GdkEventMotion *event)
4080 {
4081   GtkAllocation allocation, button_allocation;
4082   GtkTreeView *tree_view = (GtkTreeView *) widget;
4083   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4084   GtkWidget *button;
4085   gint x, y;
4086
4087   /* Sanity Check */
4088   if ((column == NULL) ||
4089       (event->window != tree_view->priv->drag_window))
4090     return FALSE;
4091
4092   button = gtk_tree_view_column_get_button (column);
4093
4094   /* Handle moving the header */
4095   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4096   gtk_widget_get_allocation (widget, &allocation);
4097   gtk_widget_get_allocation (button, &button_allocation);
4098   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4099              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4100   gdk_window_move (tree_view->priv->drag_window, x, y);
4101
4102   /* autoscroll, if needed */
4103   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4104   /* Update the current reorder position and arrow; */
4105   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4106
4107   return TRUE;
4108 }
4109
4110 static void
4111 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4112 {
4113   remove_scroll_timeout (tree_view);
4114   gtk_grab_remove (GTK_WIDGET (tree_view));
4115
4116   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4117     {
4118       GtkTreePath *tmp_path;
4119
4120       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4121
4122       /* The anchor path should be set to the start path */
4123       tmp_path = _gtk_tree_view_find_path (tree_view,
4124                                            tree_view->priv->rubber_band_start_tree,
4125                                            tree_view->priv->rubber_band_start_node);
4126
4127       if (tree_view->priv->anchor)
4128         gtk_tree_row_reference_free (tree_view->priv->anchor);
4129
4130       tree_view->priv->anchor =
4131         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4132                                           tree_view->priv->model,
4133                                           tmp_path);
4134
4135       gtk_tree_path_free (tmp_path);
4136
4137       /* ... and the cursor to the end path */
4138       tmp_path = _gtk_tree_view_find_path (tree_view,
4139                                            tree_view->priv->rubber_band_end_tree,
4140                                            tree_view->priv->rubber_band_end_node);
4141       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
4142       gtk_tree_path_free (tmp_path);
4143
4144       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4145     }
4146
4147   /* Clear status variables */
4148   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4149   tree_view->priv->rubber_band_extend = FALSE;
4150   tree_view->priv->rubber_band_modify = FALSE;
4151
4152   tree_view->priv->rubber_band_start_node = NULL;
4153   tree_view->priv->rubber_band_start_tree = NULL;
4154   tree_view->priv->rubber_band_end_node = NULL;
4155   tree_view->priv->rubber_band_end_tree = NULL;
4156 }
4157
4158 static void
4159 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4160                                                  GtkRBTree   *start_tree,
4161                                                  GtkRBNode   *start_node,
4162                                                  GtkRBTree   *end_tree,
4163                                                  GtkRBNode   *end_node,
4164                                                  gboolean     select,
4165                                                  gboolean     skip_start,
4166                                                  gboolean     skip_end)
4167 {
4168   if (start_node == end_node)
4169     return;
4170
4171   /* We skip the first node and jump inside the loop */
4172   if (skip_start)
4173     goto skip_first;
4174
4175   do
4176     {
4177       /* Small optimization by assuming insensitive nodes are never
4178        * selected.
4179        */
4180       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4181         {
4182           GtkTreePath *path;
4183           gboolean selectable;
4184
4185           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
4186           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4187           gtk_tree_path_free (path);
4188
4189           if (!selectable)
4190             goto node_not_selectable;
4191         }
4192
4193       if (select)
4194         {
4195           if (tree_view->priv->rubber_band_extend)
4196             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4197           else if (tree_view->priv->rubber_band_modify)
4198             {
4199               /* Toggle the selection state */
4200               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4201                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4202               else
4203                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4204             }
4205           else
4206             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4207         }
4208       else
4209         {
4210           /* Mirror the above */
4211           if (tree_view->priv->rubber_band_extend)
4212             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4213           else if (tree_view->priv->rubber_band_modify)
4214             {
4215               /* Toggle the selection state */
4216               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4217                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4218               else
4219                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4220             }
4221           else
4222             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4223         }
4224
4225       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4226
4227 node_not_selectable:
4228       if (start_node == end_node)
4229         break;
4230
4231 skip_first:
4232
4233       if (start_node->children)
4234         {
4235           start_tree = start_node->children;
4236           start_node = start_tree->root;
4237           while (start_node->left != start_tree->nil)
4238             start_node = start_node->left;
4239         }
4240       else
4241         {
4242           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4243
4244           if (!start_tree)
4245             /* Ran out of tree */
4246             break;
4247         }
4248
4249       if (skip_end && start_node == end_node)
4250         break;
4251     }
4252   while (TRUE);
4253 }
4254
4255 static void
4256 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4257 {
4258   GtkRBTree *start_tree, *end_tree;
4259   GtkRBNode *start_node, *end_node;
4260
4261   _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);
4262   _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);
4263
4264   /* Handle the start area first */
4265   if (!tree_view->priv->rubber_band_start_node)
4266     {
4267       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4268                                                        start_tree,
4269                                                        start_node,
4270                                                        end_tree,
4271                                                        end_node,
4272                                                        TRUE,
4273                                                        FALSE,
4274                                                        FALSE);
4275     }
4276   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4277            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4278     {
4279       /* New node is above the old one; selection became bigger */
4280       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4281                                                        start_tree,
4282                                                        start_node,
4283                                                        tree_view->priv->rubber_band_start_tree,
4284                                                        tree_view->priv->rubber_band_start_node,
4285                                                        TRUE,
4286                                                        FALSE,
4287                                                        TRUE);
4288     }
4289   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4290            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4291     {
4292       /* New node is below the old one; selection became smaller */
4293       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4294                                                        tree_view->priv->rubber_band_start_tree,
4295                                                        tree_view->priv->rubber_band_start_node,
4296                                                        start_tree,
4297                                                        start_node,
4298                                                        FALSE,
4299                                                        FALSE,
4300                                                        TRUE);
4301     }
4302
4303   tree_view->priv->rubber_band_start_tree = start_tree;
4304   tree_view->priv->rubber_band_start_node = start_node;
4305
4306   /* Next, handle the end area */
4307   if (!tree_view->priv->rubber_band_end_node)
4308     {
4309       /* In the event this happens, start_node was also NULL; this case is
4310        * handled above.
4311        */
4312     }
4313   else if (!end_node)
4314     {
4315       /* Find the last node in the tree */
4316       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4317                                &end_tree, &end_node);
4318
4319       /* Selection reached end of the tree */
4320       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4321                                                        tree_view->priv->rubber_band_end_tree,
4322                                                        tree_view->priv->rubber_band_end_node,
4323                                                        end_tree,
4324                                                        end_node,
4325                                                        TRUE,
4326                                                        TRUE,
4327                                                        FALSE);
4328     }
4329   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4330            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4331     {
4332       /* New node is below the old one; selection became bigger */
4333       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4334                                                        tree_view->priv->rubber_band_end_tree,
4335                                                        tree_view->priv->rubber_band_end_node,
4336                                                        end_tree,
4337                                                        end_node,
4338                                                        TRUE,
4339                                                        TRUE,
4340                                                        FALSE);
4341     }
4342   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4343            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4344     {
4345       /* New node is above the old one; selection became smaller */
4346       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4347                                                        end_tree,
4348                                                        end_node,
4349                                                        tree_view->priv->rubber_band_end_tree,
4350                                                        tree_view->priv->rubber_band_end_node,
4351                                                        FALSE,
4352                                                        TRUE,
4353                                                        FALSE);
4354     }
4355
4356   tree_view->priv->rubber_band_end_tree = end_tree;
4357   tree_view->priv->rubber_band_end_node = end_node;
4358 }
4359
4360 static void
4361 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4362 {
4363   gint x, y;
4364   GdkRectangle old_area;
4365   GdkRectangle new_area;
4366   GdkRectangle common;
4367   cairo_region_t *invalid_region;
4368
4369   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4370   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4371   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4372   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4373
4374   gdk_window_get_device_position (tree_view->priv->bin_window,
4375                                   gdk_device_manager_get_client_pointer (
4376                                     gdk_display_get_device_manager (
4377                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4378                                   &x, &y, NULL);
4379
4380   x = MAX (x, 0);
4381   y = MAX (y, 0) + tree_view->priv->dy;
4382
4383   new_area.x = MIN (tree_view->priv->press_start_x, x);
4384   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4385   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4386   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4387
4388   invalid_region = cairo_region_create_rectangle (&old_area);
4389   cairo_region_union_rectangle (invalid_region, &new_area);
4390
4391   gdk_rectangle_intersect (&old_area, &new_area, &common);
4392   if (common.width > 2 && common.height > 2)
4393     {
4394       cairo_region_t *common_region;
4395
4396       /* make sure the border is invalidated */
4397       common.x += 1;
4398       common.y += 1;
4399       common.width -= 2;
4400       common.height -= 2;
4401
4402       common_region = cairo_region_create_rectangle (&common);
4403
4404       cairo_region_subtract (invalid_region, common_region);
4405       cairo_region_destroy (common_region);
4406     }
4407
4408   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4409
4410   cairo_region_destroy (invalid_region);
4411
4412   tree_view->priv->rubber_band_x = x;
4413   tree_view->priv->rubber_band_y = y;
4414
4415   gtk_tree_view_update_rubber_band_selection (tree_view);
4416 }
4417
4418 static void
4419 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4420                                  cairo_t      *cr)
4421 {
4422   GdkRectangle rect;
4423   GtkStyleContext *context;
4424
4425   cairo_save (cr);
4426
4427   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4428
4429   gtk_style_context_save (context);
4430   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4431
4432   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4433   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4434   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4435   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4436
4437   gdk_cairo_rectangle (cr, &rect);
4438   cairo_clip (cr);
4439
4440   gtk_render_background (context, cr,
4441                          rect.x, rect.y,
4442                          rect.width, rect.height);
4443   gtk_render_frame (context, cr,
4444                     rect.x, rect.y,
4445                     rect.width, rect.height);
4446
4447   gtk_style_context_restore (context);
4448   cairo_restore (cr);
4449 }
4450
4451 static gboolean
4452 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4453                                  GdkEventMotion *event)
4454 {
4455   GtkTreeView *tree_view;
4456   GtkRBTree *tree;
4457   GtkRBNode *node;
4458   gint new_y;
4459
4460   tree_view = (GtkTreeView *) widget;
4461
4462   if (tree_view->priv->tree == NULL)
4463     return FALSE;
4464
4465   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4466     {
4467       gtk_grab_add (GTK_WIDGET (tree_view));
4468       gtk_tree_view_update_rubber_band (tree_view);
4469
4470       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4471     }
4472   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4473     {
4474       gtk_tree_view_update_rubber_band (tree_view);
4475
4476       add_scroll_timeout (tree_view);
4477     }
4478
4479   /* only check for an initiated drag when a button is pressed */
4480   if (tree_view->priv->pressed_button >= 0
4481       && !tree_view->priv->rubber_band_status)
4482     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4483
4484   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4485   if (new_y < 0)
4486     new_y = 0;
4487
4488   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4489
4490   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4491   if ((tree_view->priv->button_pressed_node != NULL) &&
4492       (tree_view->priv->button_pressed_node != node))
4493     node = NULL;
4494
4495   tree_view->priv->event_last_x = event->x;
4496   tree_view->priv->event_last_y = event->y;
4497
4498   prelight_or_select (tree_view, tree, node, event->x, event->y);
4499
4500   return TRUE;
4501 }
4502
4503 static gboolean
4504 gtk_tree_view_motion (GtkWidget      *widget,
4505                       GdkEventMotion *event)
4506 {
4507   GtkTreeView *tree_view;
4508
4509   tree_view = (GtkTreeView *) widget;
4510
4511   /* Resizing a column */
4512   if (tree_view->priv->in_column_resize)
4513     return gtk_tree_view_motion_resize_column (widget, event);
4514
4515   /* Drag column */
4516   if (tree_view->priv->in_column_drag)
4517     return gtk_tree_view_motion_drag_column (widget, event);
4518
4519   /* Sanity check it */
4520   if (event->window == tree_view->priv->bin_window)
4521     return gtk_tree_view_motion_bin_window (widget, event);
4522
4523   return FALSE;
4524 }
4525
4526 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4527  * the tree is empty.
4528  */
4529 static void
4530 invalidate_empty_focus (GtkTreeView *tree_view)
4531 {
4532   GdkRectangle area;
4533
4534   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4535     return;
4536
4537   area.x = 0;
4538   area.y = 0;
4539   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4540   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4541   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4542 }
4543
4544 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4545  * is empty.
4546  */
4547 static void
4548 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4549 {
4550   GtkWidget *widget = GTK_WIDGET (tree_view);
4551   gint w, h;
4552
4553   if (!gtk_widget_has_visible_focus (widget))
4554     return;
4555
4556   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4557   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4558
4559   if (w > 0 && h > 0)
4560     {
4561       GtkStyleContext *context;
4562       GtkStateFlags state;
4563
4564       context = gtk_widget_get_style_context (widget);
4565       state = gtk_widget_get_state_flags (widget);
4566
4567       gtk_style_context_save (context);
4568       gtk_style_context_set_state (context, state);
4569
4570       gtk_render_focus (context, cr, 1, 1, w, h);
4571
4572       gtk_style_context_restore (context);
4573     }
4574 }
4575
4576 typedef enum {
4577   GTK_TREE_VIEW_GRID_LINE,
4578   GTK_TREE_VIEW_TREE_LINE,
4579   GTK_TREE_VIEW_FOREGROUND_LINE
4580 } GtkTreeViewLineType;
4581
4582 static void
4583 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4584                          cairo_t             *cr,
4585                          GtkTreeViewLineType  type,
4586                          int                  x1,
4587                          int                  y1,
4588                          int                  x2,
4589                          int                  y2)
4590 {
4591   cairo_save (cr);
4592
4593   switch (type)
4594     {
4595     case GTK_TREE_VIEW_TREE_LINE:
4596       cairo_set_source_rgb (cr, 0, 0, 0);
4597       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4598       if (tree_view->priv->tree_line_dashes[0])
4599         cairo_set_dash (cr,
4600                         tree_view->priv->tree_line_dashes,
4601                         2, 0.5);
4602       break;
4603     case GTK_TREE_VIEW_GRID_LINE:
4604       cairo_set_source_rgb (cr, 0, 0, 0);
4605       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4606       if (tree_view->priv->grid_line_dashes[0])
4607         cairo_set_dash (cr,
4608                         tree_view->priv->grid_line_dashes,
4609                         2, 0.5);
4610       break;
4611     default:
4612       g_assert_not_reached ();
4613       /* fall through */
4614     case GTK_TREE_VIEW_FOREGROUND_LINE:
4615       {
4616         GtkStyleContext *context;
4617         GtkStateFlags state;
4618         GdkRGBA color;
4619
4620         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4621         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4622
4623         cairo_set_line_width (cr, 1.0);
4624         gtk_style_context_get_color (context, state, &color);
4625         gdk_cairo_set_source_rgba (cr, &color);
4626       }
4627
4628       break;
4629     }
4630
4631   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4632   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4633   cairo_stroke (cr);
4634
4635   cairo_restore (cr);
4636 }
4637
4638 static void
4639 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4640                                cairo_t        *cr,
4641                                gint            n_visible_columns)
4642 {
4643   GList *list = tree_view->priv->columns;
4644   gint i = 0;
4645   gint current_x = 0;
4646
4647   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4648       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4649     return;
4650
4651   /* Only draw the lines for visible rows and columns */
4652   for (list = tree_view->priv->columns; list; list = list->next, i++)
4653     {
4654       GtkTreeViewColumn *column = list->data;
4655
4656       /* We don't want a line for the last column */
4657       if (i == n_visible_columns - 1)
4658         break;
4659
4660       if (!gtk_tree_view_column_get_visible (column))
4661         continue;
4662
4663       current_x += gtk_tree_view_column_get_width (column);
4664
4665       gtk_tree_view_draw_line (tree_view, cr,
4666                                GTK_TREE_VIEW_GRID_LINE,
4667                                current_x - 1, 0,
4668                                current_x - 1, tree_view->priv->height);
4669     }
4670 }
4671
4672 /* Warning: Very scary function.
4673  * Modify at your own risk
4674  *
4675  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4676  * FIXME: It's not...
4677  */
4678 static gboolean
4679 gtk_tree_view_bin_draw (GtkWidget      *widget,
4680                         cairo_t        *cr)
4681 {
4682   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4683   GtkTreePath *path;
4684   GtkRBTree *tree;
4685   GList *list;
4686   GtkRBNode *node;
4687   GtkRBNode *cursor = NULL;
4688   GtkRBTree *cursor_tree = NULL;
4689   GtkRBNode *drag_highlight = NULL;
4690   GtkRBTree *drag_highlight_tree = NULL;
4691   GtkTreeIter iter;
4692   gint new_y;
4693   gint y_offset, cell_offset;
4694   gint max_height;
4695   gint depth;
4696   GdkRectangle background_area;
4697   GdkRectangle cell_area;
4698   GdkRectangle clip;
4699   guint flags;
4700   gint highlight_x;
4701   gint expander_cell_width;
4702   gint bin_window_width;
4703   gint bin_window_height;
4704   GtkTreePath *cursor_path;
4705   GtkTreePath *drag_dest_path;
4706   GList *first_column, *last_column;
4707   gint vertical_separator;
4708   gint horizontal_separator;
4709   gint focus_line_width;
4710   gboolean allow_rules;
4711   gboolean has_can_focus_cell;
4712   gboolean rtl;
4713   gint n_visible_columns;
4714   gint grid_line_width;
4715   gboolean draw_vgrid_lines, draw_hgrid_lines;
4716   GtkStyleContext *context;
4717   GtkStateFlags state;
4718   gboolean parity;
4719
4720   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4721   context = gtk_widget_get_style_context (widget);
4722   state = gtk_widget_get_state_flags (widget);
4723
4724   gtk_widget_style_get (widget,
4725                         "horizontal-separator", &horizontal_separator,
4726                         "vertical-separator", &vertical_separator,
4727                         "allow-rules", &allow_rules,
4728                         "focus-line-width", &focus_line_width,
4729                         NULL);
4730
4731   if (tree_view->priv->tree == NULL)
4732     {
4733       draw_empty_focus (tree_view, cr);
4734       return TRUE;
4735     }
4736
4737   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4738   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4739   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4740   cairo_clip (cr);
4741   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4742     return TRUE;
4743
4744   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4745
4746   if (new_y < 0)
4747     new_y = 0;
4748   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4749
4750   if (tree_view->priv->height < bin_window_height)
4751     {
4752       gtk_style_context_save (context);
4753       gtk_style_context_set_state (context, state);
4754       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4755
4756       gtk_render_background (context, cr,
4757                              0, tree_view->priv->height,
4758                              bin_window_width,
4759                              bin_window_height - tree_view->priv->height);
4760
4761       gtk_style_context_restore (context);
4762     }
4763
4764   if (node == NULL)
4765     return TRUE;
4766
4767   /* find the path for the node */
4768   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4769                                    tree,
4770                                    node);
4771   gtk_tree_model_get_iter (tree_view->priv->model,
4772                            &iter,
4773                            path);
4774   depth = gtk_tree_path_get_depth (path);
4775   gtk_tree_path_free (path);
4776
4777   cursor_path = NULL;
4778   drag_dest_path = NULL;
4779
4780   if (tree_view->priv->cursor)
4781     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4782
4783   if (cursor_path)
4784     _gtk_tree_view_find_node (tree_view, cursor_path,
4785                               &cursor_tree, &cursor);
4786
4787   if (tree_view->priv->drag_dest_row)
4788     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4789
4790   if (drag_dest_path)
4791     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4792                               &drag_highlight_tree, &drag_highlight);
4793
4794   draw_vgrid_lines =
4795     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4796     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4797   draw_hgrid_lines =
4798     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4799     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4800
4801   if (draw_vgrid_lines || draw_hgrid_lines)
4802     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4803
4804   n_visible_columns = 0;
4805   for (list = tree_view->priv->columns; list; list = list->next)
4806     {
4807       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4808         continue;
4809       n_visible_columns ++;
4810     }
4811
4812   /* Find the last column */
4813   for (last_column = g_list_last (tree_view->priv->columns);
4814        last_column &&
4815        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4816        last_column = last_column->prev)
4817     ;
4818
4819   /* and the first */
4820   for (first_column = g_list_first (tree_view->priv->columns);
4821        first_column &&
4822        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4823        first_column = first_column->next)
4824     ;
4825
4826   /* Actually process the expose event.  To do this, we want to
4827    * start at the first node of the event, and walk the tree in
4828    * order, drawing each successive node.
4829    */
4830
4831   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4832
4833   do
4834     {
4835       gboolean is_separator = FALSE;
4836       gboolean is_first = FALSE;
4837       gboolean is_last = FALSE;
4838       gint n_col = 0;
4839
4840       parity = !parity;
4841       is_separator = row_is_separator (tree_view, &iter, NULL);
4842
4843       max_height = gtk_tree_view_get_row_height (tree_view, node);
4844
4845       cell_offset = 0;
4846       highlight_x = 0; /* should match x coord of first cell */
4847       expander_cell_width = 0;
4848
4849       background_area.y = y_offset + clip.y;
4850       background_area.height = max_height;
4851
4852       flags = 0;
4853
4854       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4855         flags |= GTK_CELL_RENDERER_PRELIT;
4856
4857       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4858         flags |= GTK_CELL_RENDERER_SELECTED;
4859
4860       /* we *need* to set cell data on all cells before the call
4861        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4862        * return a correct value.
4863        */
4864       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4865            list;
4866            list = (rtl ? list->prev : list->next))
4867         {
4868           GtkTreeViewColumn *column = list->data;
4869           gtk_tree_view_column_cell_set_cell_data (column,
4870                                                    tree_view->priv->model,
4871                                                    &iter,
4872                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4873                                                    node->children?TRUE:FALSE);
4874         }
4875
4876       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4877
4878       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4879            list;
4880            list = (rtl ? list->prev : list->next))
4881         {
4882           GtkTreeViewColumn *column = list->data;
4883           GtkRegionFlags row_flags = 0, column_flags = 0;
4884           GtkStateFlags state = 0;
4885           gint width;
4886           gboolean draw_focus;
4887
4888           if (!gtk_tree_view_column_get_visible (column))
4889             continue;
4890
4891           n_col++;
4892           width = gtk_tree_view_column_get_width (column);
4893
4894           if (cell_offset > clip.x + clip.width ||
4895               cell_offset + width < clip.x)
4896             {
4897               cell_offset += width;
4898               continue;
4899             }
4900
4901           if (gtk_tree_view_column_get_sort_indicator (column))
4902             flags |= GTK_CELL_RENDERER_SORTED;
4903           else
4904             flags &= ~GTK_CELL_RENDERER_SORTED;
4905
4906           if (cursor == node)
4907             flags |= GTK_CELL_RENDERER_FOCUSED;
4908           else
4909             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4910
4911           background_area.x = cell_offset;
4912           background_area.width = width;
4913
4914           cell_area = background_area;
4915           cell_area.y += vertical_separator / 2;
4916           cell_area.x += horizontal_separator / 2;
4917           cell_area.height -= vertical_separator;
4918           cell_area.width -= horizontal_separator;
4919
4920           if (draw_vgrid_lines)
4921             {
4922               if (list == first_column)
4923                 {
4924                   cell_area.width -= grid_line_width / 2;
4925                 }
4926               else if (list == last_column)
4927                 {
4928                   cell_area.x += grid_line_width / 2;
4929                   cell_area.width -= grid_line_width / 2;
4930                 }
4931               else
4932                 {
4933                   cell_area.x += grid_line_width / 2;
4934                   cell_area.width -= grid_line_width;
4935                 }
4936             }
4937
4938           if (draw_hgrid_lines)
4939             {
4940               cell_area.y += grid_line_width / 2;
4941               cell_area.height -= grid_line_width;
4942             }
4943
4944           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4945             {
4946               cell_offset += gtk_tree_view_column_get_width (column);
4947               continue;
4948             }
4949
4950           gtk_tree_view_column_cell_set_cell_data (column,
4951                                                    tree_view->priv->model,
4952                                                    &iter,
4953                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4954                                                    node->children?TRUE:FALSE);
4955
4956           /* Select the detail for drawing the cell.  relevant
4957            * factors are parity, sortedness, and whether to
4958            * display rules.
4959            */
4960           if (allow_rules && tree_view->priv->has_rules)
4961             {
4962               if (parity)
4963                 row_flags |= GTK_REGION_ODD;
4964               else
4965                 row_flags |= GTK_REGION_EVEN;
4966             }
4967
4968           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4969               n_visible_columns >= 3)
4970             column_flags |= GTK_REGION_SORTED;
4971
4972           is_first = (rtl ? !list->next : !list->prev);
4973           is_last = (rtl ? !list->prev : !list->next);
4974
4975           if (is_first)
4976             column_flags |= GTK_REGION_FIRST;
4977
4978           if (is_last)
4979             column_flags |= GTK_REGION_LAST;
4980
4981           if ((n_col % 2) == 0)
4982             column_flags |= GTK_REGION_EVEN;
4983           else
4984             column_flags |= GTK_REGION_ODD;
4985
4986           gtk_style_context_save (context);
4987
4988           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4989           gtk_style_context_set_state (context, state);
4990
4991           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4992           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4993           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4994
4995           if (node == cursor && has_can_focus_cell
4996               && ((column == tree_view->priv->focus_column
4997                    && tree_view->priv->draw_keyfocus &&
4998                    gtk_widget_has_visible_focus (widget))
4999                   || (column == tree_view->priv->edited_column)))
5000             draw_focus = TRUE;
5001           else
5002             draw_focus = FALSE;
5003
5004           /* Draw background */
5005           gtk_render_background (context, cr,
5006                                  background_area.x,
5007                                  background_area.y,
5008                                  background_area.width,
5009                                  background_area.height);
5010
5011           /* Draw frame */
5012           gtk_render_frame (context, cr,
5013                             background_area.x,
5014                             background_area.y,
5015                             background_area.width,
5016                             background_area.height);
5017
5018           if (gtk_tree_view_is_expander_column (tree_view, column))
5019             {
5020               if (!rtl)
5021                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5022               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5023
5024               if (gtk_tree_view_draw_expanders (tree_view))
5025                 {
5026                   if (!rtl)
5027                     cell_area.x += depth * tree_view->priv->expander_size;
5028                   cell_area.width -= depth * tree_view->priv->expander_size;
5029                 }
5030
5031               /* If we have an expander column, the highlight underline
5032                * starts with that column, so that it indicates which
5033                * level of the tree we're dropping at.
5034                */
5035               highlight_x = cell_area.x;
5036               expander_cell_width = cell_area.width;
5037
5038               if (is_separator)
5039                 {
5040                   gtk_style_context_save (context);
5041                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5042
5043                   gtk_render_line (context, cr,
5044                                    cell_area.x,
5045                                    cell_area.y + cell_area.height / 2,
5046                                    cell_area.x + cell_area.width,
5047                                    cell_area.y + cell_area.height / 2);
5048
5049                   gtk_style_context_restore (context);
5050                 }
5051               else
5052                 {
5053                   _gtk_tree_view_column_cell_render (column,
5054                                                      cr,
5055                                                      &background_area,
5056                                                      &cell_area,
5057                                                      flags,
5058                                                      draw_focus);
5059                 }
5060
5061               if (gtk_tree_view_draw_expanders (tree_view)
5062                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5063                 {
5064                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5065                                             cr,
5066                                             tree,
5067                                             node);
5068                 }
5069             }
5070           else
5071             {
5072               if (is_separator)
5073                 {
5074                   gtk_style_context_save (context);
5075                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5076
5077                   gtk_render_line (context, cr,
5078                                    cell_area.x,
5079                                    cell_area.y + cell_area.height / 2,
5080                                    cell_area.x + cell_area.width,
5081                                    cell_area.y + cell_area.height / 2);
5082
5083                   gtk_style_context_restore (context);
5084                 }
5085               else
5086                 _gtk_tree_view_column_cell_render (column,
5087                                                    cr,
5088                                                    &background_area,
5089                                                    &cell_area,
5090                                                    flags,
5091                                                    draw_focus);
5092             }
5093
5094           if (draw_hgrid_lines)
5095             {
5096               if (background_area.y > 0)
5097                 gtk_tree_view_draw_line (tree_view, cr,
5098                                          GTK_TREE_VIEW_GRID_LINE,
5099                                          background_area.x, background_area.y,
5100                                          background_area.x + background_area.width,
5101                                          background_area.y);
5102
5103               if (y_offset + max_height >= clip.height)
5104                 gtk_tree_view_draw_line (tree_view, cr,
5105                                          GTK_TREE_VIEW_GRID_LINE,
5106                                          background_area.x, background_area.y + max_height,
5107                                          background_area.x + background_area.width,
5108                                          background_area.y + max_height);
5109             }
5110
5111           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5112               tree_view->priv->tree_lines_enabled)
5113             {
5114               gint x = background_area.x;
5115               gint mult = rtl ? -1 : 1;
5116               gint y0 = background_area.y;
5117               gint y1 = background_area.y + background_area.height/2;
5118               gint y2 = background_area.y + background_area.height;
5119
5120               if (rtl)
5121                 x += background_area.width - 1;
5122
5123               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5124                   && depth > 1)
5125                 {
5126                   gtk_tree_view_draw_line (tree_view, cr,
5127                                            GTK_TREE_VIEW_TREE_LINE,
5128                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5129                                            y1,
5130                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5131                                            y1);
5132                 }
5133               else if (depth > 1)
5134                 {
5135                   gtk_tree_view_draw_line (tree_view, cr,
5136                                            GTK_TREE_VIEW_TREE_LINE,
5137                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5138                                            y1,
5139                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5140                                            y1);
5141                 }
5142
5143               if (depth > 1)
5144                 {
5145                   gint i;
5146                   GtkRBNode *tmp_node;
5147                   GtkRBTree *tmp_tree;
5148
5149                   if (!_gtk_rbtree_next (tree, node))
5150                     gtk_tree_view_draw_line (tree_view, cr,
5151                                              GTK_TREE_VIEW_TREE_LINE,
5152                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5153                                              y0,
5154                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5155                                              y1);
5156                   else
5157                     gtk_tree_view_draw_line (tree_view, cr,
5158                                              GTK_TREE_VIEW_TREE_LINE,
5159                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5160                                              y0,
5161                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5162                                              y2);
5163
5164                   tmp_node = tree->parent_node;
5165                   tmp_tree = tree->parent_tree;
5166
5167                   for (i = depth - 2; i > 0; i--)
5168                     {
5169                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5170                         gtk_tree_view_draw_line (tree_view, cr,
5171                                                  GTK_TREE_VIEW_TREE_LINE,
5172                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5173                                                  y0,
5174                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5175                                                  y2);
5176
5177                       tmp_node = tmp_tree->parent_node;
5178                       tmp_tree = tmp_tree->parent_tree;
5179                     }
5180                 }
5181             }
5182
5183           gtk_style_context_restore (context);
5184           cell_offset += gtk_tree_view_column_get_width (column);
5185         }
5186
5187       if (node == drag_highlight)
5188         {
5189           /* Draw indicator for the drop
5190            */
5191           gint highlight_y = -1;
5192           GtkRBTree *tree = NULL;
5193           GtkRBNode *node = NULL;
5194
5195           switch (tree_view->priv->drag_dest_pos)
5196             {
5197             case GTK_TREE_VIEW_DROP_BEFORE:
5198               highlight_y = background_area.y - 1;
5199               if (highlight_y < 0)
5200                       highlight_y = 0;
5201               break;
5202
5203             case GTK_TREE_VIEW_DROP_AFTER:
5204               highlight_y = background_area.y + background_area.height - 1;
5205               break;
5206
5207             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5208             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5209               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5210
5211               if (tree == NULL)
5212                 break;
5213
5214               gtk_render_focus (context, cr,
5215                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5216                                    - focus_line_width / 2,
5217                                 gdk_window_get_width (tree_view->priv->bin_window),
5218                                 gtk_tree_view_get_row_height (tree_view, node)
5219                                    - focus_line_width + 1);
5220               break;
5221             }
5222
5223           if (highlight_y >= 0)
5224             {
5225               gtk_tree_view_draw_line (tree_view, cr,
5226                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5227                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5228                                        highlight_y,
5229                                        rtl ? 0 : bin_window_width,
5230                                        highlight_y);
5231             }
5232         }
5233
5234       /* draw the big row-spanning focus rectangle, if needed */
5235       if (!has_can_focus_cell && node == cursor &&
5236           tree_view->priv->draw_keyfocus &&
5237           gtk_widget_has_visible_focus (widget))
5238         {
5239           gint tmp_y, tmp_height;
5240           GtkStateFlags focus_rect_state = 0;
5241
5242           gtk_style_context_save (context);
5243
5244           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5245           gtk_style_context_set_state (context, focus_rect_state);
5246
5247           if (draw_hgrid_lines)
5248             {
5249               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5250               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5251             }
5252           else
5253             {
5254               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5255               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5256             }
5257
5258           gtk_render_focus (context, cr,
5259                             0, tmp_y,
5260                             gdk_window_get_width (tree_view->priv->bin_window),
5261                             tmp_height);
5262
5263           gtk_style_context_restore (context);
5264         }
5265
5266       y_offset += max_height;
5267       if (node->children)
5268         {
5269           GtkTreeIter parent = iter;
5270           gboolean has_child;
5271
5272           tree = node->children;
5273           node = tree->root;
5274
5275           g_assert (node != tree->nil);
5276
5277           while (node->left != tree->nil)
5278             node = node->left;
5279           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5280                                                     &iter,
5281                                                     &parent);
5282           depth++;
5283
5284           /* Sanity Check! */
5285           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5286         }
5287       else
5288         {
5289           gboolean done = FALSE;
5290
5291           do
5292             {
5293               node = _gtk_rbtree_next (tree, node);
5294               if (node != NULL)
5295                 {
5296                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5297                   done = TRUE;
5298
5299                   /* Sanity Check! */
5300                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5301                 }
5302               else
5303                 {
5304                   GtkTreeIter parent_iter = iter;
5305                   gboolean has_parent;
5306
5307                   node = tree->parent_node;
5308                   tree = tree->parent_tree;
5309                   if (tree == NULL)
5310                     /* we should go to done to free some memory */
5311                     goto done;
5312                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5313                                                            &iter,
5314                                                            &parent_iter);
5315                   depth--;
5316
5317                   /* Sanity check */
5318                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5319                 }
5320             }
5321           while (!done);
5322         }
5323     }
5324   while (y_offset < clip.height);
5325
5326 done:
5327   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5328
5329   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5330     gtk_tree_view_paint_rubber_band (tree_view, cr);
5331
5332   if (cursor_path)
5333     gtk_tree_path_free (cursor_path);
5334
5335   if (drag_dest_path)
5336     gtk_tree_path_free (drag_dest_path);
5337
5338   return FALSE;
5339 }
5340
5341 static gboolean
5342 gtk_tree_view_draw (GtkWidget *widget,
5343                     cairo_t   *cr)
5344 {
5345   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5346   GtkWidget   *button;
5347
5348   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5349     {
5350       GtkStyleContext *context;
5351       GList *tmp_list;
5352
5353       context = gtk_widget_get_style_context (widget);
5354
5355       cairo_save (cr);
5356
5357       gtk_style_context_save (context);
5358       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5359
5360       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5361
5362       gtk_tree_view_bin_draw (widget, cr);
5363
5364       gtk_style_context_restore (context);
5365       cairo_restore (cr);
5366
5367       /* We can't just chain up to Container::draw as it will try to send the
5368        * event to the headers, so we handle propagating it to our children
5369        * (eg. widgets being edited) ourselves.
5370        */
5371       tmp_list = tree_view->priv->children;
5372       while (tmp_list)
5373         {
5374           GtkTreeViewChild *child = tmp_list->data;
5375           tmp_list = tmp_list->next;
5376
5377           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5378         }
5379     }
5380
5381   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5382     {
5383       GList *list;
5384
5385       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5386         {
5387           GtkTreeViewColumn *column = list->data;
5388
5389           if (column == tree_view->priv->drag_column)
5390             continue;
5391
5392           if (gtk_tree_view_column_get_visible (column))
5393             {
5394               button = gtk_tree_view_column_get_button (column);
5395               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5396                                             button, cr);
5397             }
5398         }
5399     }
5400
5401   if (tree_view->priv->drag_window &&
5402       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5403     {
5404       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5405       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5406                                     button, cr);
5407     }
5408
5409   return FALSE;
5410 }
5411
5412 enum
5413 {
5414   DROP_HOME,
5415   DROP_RIGHT,
5416   DROP_LEFT,
5417   DROP_END
5418 };
5419
5420 /* returns 0x1 when no column has been found -- yes it's hackish */
5421 static GtkTreeViewColumn *
5422 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5423                                GtkTreeViewColumn *column,
5424                                gint               drop_position)
5425 {
5426   GtkTreeViewColumn *left_column = NULL;
5427   GtkTreeViewColumn *cur_column = NULL;
5428   GList *tmp_list;
5429
5430   if (!gtk_tree_view_column_get_reorderable (column))
5431     return (GtkTreeViewColumn *)0x1;
5432
5433   switch (drop_position)
5434     {
5435       case DROP_HOME:
5436         /* find first column where we can drop */
5437         tmp_list = tree_view->priv->columns;
5438         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5439           return (GtkTreeViewColumn *)0x1;
5440
5441         while (tmp_list)
5442           {
5443             g_assert (tmp_list);
5444
5445             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5446             tmp_list = tmp_list->next;
5447
5448             if (left_column &&
5449                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5450               continue;
5451
5452             if (!tree_view->priv->column_drop_func)
5453               return left_column;
5454
5455             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5456               {
5457                 left_column = cur_column;
5458                 continue;
5459               }
5460
5461             return left_column;
5462           }
5463
5464         if (!tree_view->priv->column_drop_func)
5465           return left_column;
5466
5467         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5468           return left_column;
5469         else
5470           return (GtkTreeViewColumn *)0x1;
5471         break;
5472
5473       case DROP_RIGHT:
5474         /* find first column after column where we can drop */
5475         tmp_list = tree_view->priv->columns;
5476
5477         for (; tmp_list; tmp_list = tmp_list->next)
5478           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5479             break;
5480
5481         if (!tmp_list || !tmp_list->next)
5482           return (GtkTreeViewColumn *)0x1;
5483
5484         tmp_list = tmp_list->next;
5485         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5486         tmp_list = tmp_list->next;
5487
5488         while (tmp_list)
5489           {
5490             g_assert (tmp_list);
5491
5492             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5493             tmp_list = tmp_list->next;
5494
5495             if (left_column &&
5496                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5497               {
5498                 left_column = cur_column;
5499                 if (tmp_list)
5500                   tmp_list = tmp_list->next;
5501                 continue;
5502               }
5503
5504             if (!tree_view->priv->column_drop_func)
5505               return left_column;
5506
5507             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5508               {
5509                 left_column = cur_column;
5510                 continue;
5511               }
5512
5513             return left_column;
5514           }
5515
5516         if (!tree_view->priv->column_drop_func)
5517           return left_column;
5518
5519         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5520           return left_column;
5521         else
5522           return (GtkTreeViewColumn *)0x1;
5523         break;
5524
5525       case DROP_LEFT:
5526         /* find first column before column where we can drop */
5527         tmp_list = tree_view->priv->columns;
5528
5529         for (; tmp_list; tmp_list = tmp_list->next)
5530           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5531             break;
5532
5533         if (!tmp_list || !tmp_list->prev)
5534           return (GtkTreeViewColumn *)0x1;
5535
5536         tmp_list = tmp_list->prev;
5537         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5538         tmp_list = tmp_list->prev;
5539
5540         while (tmp_list)
5541           {
5542             g_assert (tmp_list);
5543
5544             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5545
5546             if (left_column &&
5547                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5548               {
5549                 /*if (!tmp_list->prev)
5550                   return (GtkTreeViewColumn *)0x1;
5551                   */
5552 /*
5553                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5554                 tmp_list = tmp_list->prev->prev;
5555                 continue;*/
5556
5557                 cur_column = left_column;
5558                 if (tmp_list)
5559                   tmp_list = tmp_list->prev;
5560                 continue;
5561               }
5562
5563             if (!tree_view->priv->column_drop_func)
5564               return left_column;
5565
5566             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5567               return left_column;
5568
5569             cur_column = left_column;
5570             tmp_list = tmp_list->prev;
5571           }
5572
5573         if (!tree_view->priv->column_drop_func)
5574           return NULL;
5575
5576         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5577           return NULL;
5578         else
5579           return (GtkTreeViewColumn *)0x1;
5580         break;
5581
5582       case DROP_END:
5583         /* same as DROP_HOME case, but doing it backwards */
5584         tmp_list = g_list_last (tree_view->priv->columns);
5585         cur_column = NULL;
5586
5587         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5588           return (GtkTreeViewColumn *)0x1;
5589
5590         while (tmp_list)
5591           {
5592             g_assert (tmp_list);
5593
5594             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5595
5596             if (left_column &&
5597                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5598               {
5599                 cur_column = left_column;
5600                 tmp_list = tmp_list->prev;
5601               }
5602
5603             if (!tree_view->priv->column_drop_func)
5604               return left_column;
5605
5606             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5607               return left_column;
5608
5609             cur_column = left_column;
5610             tmp_list = tmp_list->prev;
5611           }
5612
5613         if (!tree_view->priv->column_drop_func)
5614           return NULL;
5615
5616         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5617           return NULL;
5618         else
5619           return (GtkTreeViewColumn *)0x1;
5620         break;
5621     }
5622
5623   return (GtkTreeViewColumn *)0x1;
5624 }
5625
5626 static gboolean
5627 gtk_tree_view_key_press (GtkWidget   *widget,
5628                          GdkEventKey *event)
5629 {
5630   GtkTreeView *tree_view = (GtkTreeView *) widget;
5631   GtkWidget   *button;
5632
5633   if (tree_view->priv->rubber_band_status)
5634     {
5635       if (event->keyval == GDK_KEY_Escape)
5636         gtk_tree_view_stop_rubber_band (tree_view);
5637
5638       return TRUE;
5639     }
5640
5641   if (tree_view->priv->in_column_drag)
5642     {
5643       if (event->keyval == GDK_KEY_Escape)
5644         {
5645           tree_view->priv->cur_reorder = NULL;
5646           gtk_tree_view_button_release_drag_column (widget, NULL);
5647         }
5648       return TRUE;
5649     }
5650
5651   if (tree_view->priv->headers_visible)
5652     {
5653       GList *focus_column;
5654       gboolean rtl;
5655
5656       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5657
5658       for (focus_column = tree_view->priv->columns;
5659            focus_column;
5660            focus_column = focus_column->next)
5661         {
5662           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5663
5664           button = gtk_tree_view_column_get_button (column);
5665           if (gtk_widget_has_focus (button))
5666             break;
5667         }
5668
5669       if (focus_column &&
5670           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5671           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5672            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5673         {
5674           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5675           gint max_width, min_width;
5676
5677           if (!gtk_tree_view_column_get_resizable (column))
5678             {
5679               gtk_widget_error_bell (widget);
5680               return TRUE;
5681             }
5682
5683           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5684               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5685             {
5686               GtkRequisition button_req;
5687               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5688               gint new_width;
5689
5690               button = gtk_tree_view_column_get_button (column);
5691
5692               gtk_widget_get_preferred_size (button, &button_req, NULL);
5693
5694               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5695               new_width -= 2;
5696               if (new_width < 0)
5697                 new_width = 0;
5698
5699               _gtk_tree_view_column_set_resized_width (column, new_width);
5700
5701               min_width = gtk_tree_view_column_get_min_width (column);
5702               if (min_width == -1)
5703                 new_width = MAX (button_req.width, new_width);
5704               else
5705                 {
5706                   new_width = MAX (min_width, new_width);
5707                 }
5708
5709               max_width = gtk_tree_view_column_get_max_width (column);
5710               if (max_width != -1)
5711                 new_width = MIN (new_width, max_width);
5712
5713               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5714
5715               if (new_width != old_width)
5716                 {
5717                   _gtk_tree_view_column_set_resized_width (column, new_width);
5718                   gtk_widget_queue_resize (widget);
5719                 }
5720               else
5721                 gtk_widget_error_bell (widget);
5722             }
5723           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5724                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5725             {
5726               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5727               gint new_width;
5728
5729               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5730               new_width += 2;
5731
5732               max_width = gtk_tree_view_column_get_max_width (column);
5733               if (max_width != -1)
5734                 new_width = MIN (new_width, max_width);
5735
5736               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5737
5738               if (new_width != old_width)
5739                 {
5740                   _gtk_tree_view_column_set_resized_width (column, new_width);
5741                   gtk_widget_queue_resize (widget);
5742                 }
5743               else
5744                 gtk_widget_error_bell (widget);
5745             }
5746
5747           return TRUE;
5748         }
5749
5750       if (focus_column &&
5751           (event->state & GDK_MOD1_MASK) &&
5752           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5753            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5754            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5755            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5756         {
5757           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5758
5759           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5760               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5761             {
5762               GtkTreeViewColumn *col;
5763               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5764               if (col != (GtkTreeViewColumn *)0x1)
5765                 gtk_tree_view_move_column_after (tree_view, column, col);
5766               else
5767                 gtk_widget_error_bell (widget);
5768             }
5769           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5770                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5771             {
5772               GtkTreeViewColumn *col;
5773               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5774               if (col != (GtkTreeViewColumn *)0x1)
5775                 gtk_tree_view_move_column_after (tree_view, column, col);
5776               else
5777                 gtk_widget_error_bell (widget);
5778             }
5779           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5780             {
5781               GtkTreeViewColumn *col;
5782               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5783               if (col != (GtkTreeViewColumn *)0x1)
5784                 gtk_tree_view_move_column_after (tree_view, column, col);
5785               else
5786                 gtk_widget_error_bell (widget);
5787             }
5788           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5789             {
5790               GtkTreeViewColumn *col;
5791               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5792               if (col != (GtkTreeViewColumn *)0x1)
5793                 gtk_tree_view_move_column_after (tree_view, column, col);
5794               else
5795                 gtk_widget_error_bell (widget);
5796             }
5797
5798           return TRUE;
5799         }
5800     }
5801
5802   /* Chain up to the parent class.  It handles the keybindings. */
5803   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5804     return TRUE;
5805
5806   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5807     {
5808       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5809       return FALSE;
5810     }
5811
5812   /* We pass the event to the search_entry.  If its text changes, then we start
5813    * the typeahead find capabilities. */
5814   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5815       && tree_view->priv->enable_search
5816       && !tree_view->priv->search_custom_entry_set)
5817     {
5818       GdkEvent *new_event;
5819       char *old_text;
5820       const char *new_text;
5821       gboolean retval;
5822       GdkScreen *screen;
5823       gboolean text_modified;
5824       gulong popup_menu_id;
5825
5826       gtk_tree_view_ensure_interactive_directory (tree_view);
5827
5828       /* Make a copy of the current text */
5829       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5830       new_event = gdk_event_copy ((GdkEvent *) event);
5831       g_object_unref (((GdkEventKey *) new_event)->window);
5832       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5833       gtk_widget_realize (tree_view->priv->search_window);
5834
5835       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5836                                         "popup-menu", G_CALLBACK (gtk_true),
5837                                         NULL);
5838
5839       /* Move the entry off screen */
5840       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5841       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5842                        gdk_screen_get_width (screen) + 1,
5843                        gdk_screen_get_height (screen) + 1);
5844       gtk_widget_show (tree_view->priv->search_window);
5845
5846       /* Send the event to the window.  If the preedit_changed signal is emitted
5847        * during this event, we will set priv->imcontext_changed  */
5848       tree_view->priv->imcontext_changed = FALSE;
5849       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5850       gdk_event_free (new_event);
5851       gtk_widget_hide (tree_view->priv->search_window);
5852
5853       g_signal_handler_disconnect (tree_view->priv->search_entry,
5854                                    popup_menu_id);
5855
5856       /* We check to make sure that the entry tried to handle the text, and that
5857        * the text has changed.
5858        */
5859       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5860       text_modified = strcmp (old_text, new_text) != 0;
5861       g_free (old_text);
5862       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5863           (retval && text_modified))               /* ...or the text was modified */
5864         {
5865           if (gtk_tree_view_real_start_interactive_search (tree_view,
5866                                                            gdk_event_get_device ((GdkEvent *) event),
5867                                                            FALSE))
5868             {
5869               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5870               return TRUE;
5871             }
5872           else
5873             {
5874               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5875               return FALSE;
5876             }
5877         }
5878     }
5879
5880   return FALSE;
5881 }
5882
5883 static gboolean
5884 gtk_tree_view_key_release (GtkWidget   *widget,
5885                            GdkEventKey *event)
5886 {
5887   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5888
5889   if (tree_view->priv->rubber_band_status)
5890     return TRUE;
5891
5892   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5893 }
5894
5895 /* FIXME Is this function necessary? Can I get an enter_notify event
5896  * w/o either an expose event or a mouse motion event?
5897  */
5898 static gboolean
5899 gtk_tree_view_enter_notify (GtkWidget        *widget,
5900                             GdkEventCrossing *event)
5901 {
5902   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5903   GtkRBTree *tree;
5904   GtkRBNode *node;
5905   gint new_y;
5906
5907   /* Sanity check it */
5908   if (event->window != tree_view->priv->bin_window)
5909     return FALSE;
5910
5911   if (tree_view->priv->tree == NULL)
5912     return FALSE;
5913
5914   if (event->mode == GDK_CROSSING_GRAB ||
5915       event->mode == GDK_CROSSING_GTK_GRAB ||
5916       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5917       event->mode == GDK_CROSSING_STATE_CHANGED)
5918     return TRUE;
5919
5920   /* find the node internally */
5921   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5922   if (new_y < 0)
5923     new_y = 0;
5924   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5925
5926   tree_view->priv->event_last_x = event->x;
5927   tree_view->priv->event_last_y = event->y;
5928
5929   if ((tree_view->priv->button_pressed_node == NULL) ||
5930       (tree_view->priv->button_pressed_node == node))
5931     prelight_or_select (tree_view, tree, node, event->x, event->y);
5932
5933   return TRUE;
5934 }
5935
5936 static gboolean
5937 gtk_tree_view_leave_notify (GtkWidget        *widget,
5938                             GdkEventCrossing *event)
5939 {
5940   GtkTreeView *tree_view;
5941
5942   if (event->mode == GDK_CROSSING_GRAB)
5943     return TRUE;
5944
5945   tree_view = GTK_TREE_VIEW (widget);
5946
5947   if (tree_view->priv->prelight_node)
5948     _gtk_tree_view_queue_draw_node (tree_view,
5949                                    tree_view->priv->prelight_tree,
5950                                    tree_view->priv->prelight_node,
5951                                    NULL);
5952
5953   tree_view->priv->event_last_x = -10000;
5954   tree_view->priv->event_last_y = -10000;
5955
5956   prelight_or_select (tree_view,
5957                       NULL, NULL,
5958                       -1000, -1000); /* coords not possibly over an arrow */
5959
5960   return TRUE;
5961 }
5962
5963
5964 static gint
5965 gtk_tree_view_focus_out (GtkWidget     *widget,
5966                          GdkEventFocus *event)
5967 {
5968   GtkTreeView *tree_view;
5969
5970   tree_view = GTK_TREE_VIEW (widget);
5971
5972   gtk_widget_queue_draw (widget);
5973
5974   /* destroy interactive search dialog */
5975   if (tree_view->priv->search_window)
5976     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5977                                       gdk_event_get_device ((GdkEvent *) event));
5978
5979   return FALSE;
5980 }
5981
5982
5983 /* Incremental Reflow
5984  */
5985
5986 static void
5987 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5988                                  GtkRBTree   *tree,
5989                                  GtkRBNode   *node)
5990 {
5991   GtkAllocation allocation;
5992   gint y;
5993
5994   y = _gtk_rbtree_node_find_offset (tree, node)
5995     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5996     + gtk_tree_view_get_effective_header_height (tree_view);
5997
5998   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5999   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
6000                               0, y,
6001                               allocation.width,
6002                               GTK_RBNODE_GET_HEIGHT (node));
6003 }
6004
6005 static gboolean
6006 node_is_visible (GtkTreeView *tree_view,
6007                  GtkRBTree   *tree,
6008                  GtkRBNode   *node)
6009 {
6010   int y;
6011   int height;
6012
6013   y = _gtk_rbtree_node_find_offset (tree, node);
6014   height = gtk_tree_view_get_row_height (tree_view, node);
6015
6016   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6017       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6018                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6019     return TRUE;
6020
6021   return FALSE;
6022 }
6023
6024 /* Returns TRUE if it updated the size
6025  */
6026 static gboolean
6027 validate_row (GtkTreeView *tree_view,
6028               GtkRBTree   *tree,
6029               GtkRBNode   *node,
6030               GtkTreeIter *iter,
6031               GtkTreePath *path)
6032 {
6033   GtkTreeViewColumn *column;
6034   GList *list, *first_column, *last_column;
6035   gint height = 0;
6036   gint horizontal_separator;
6037   gint vertical_separator;
6038   gint depth = gtk_tree_path_get_depth (path);
6039   gboolean retval = FALSE;
6040   gboolean is_separator = FALSE;
6041   gboolean draw_vgrid_lines, draw_hgrid_lines;
6042   gint focus_pad;
6043   gint grid_line_width;
6044   gboolean wide_separators;
6045   gint separator_height;
6046
6047   /* double check the row needs validating */
6048   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6049       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6050     return FALSE;
6051
6052   is_separator = row_is_separator (tree_view, iter, NULL);
6053
6054   gtk_widget_style_get (GTK_WIDGET (tree_view),
6055                         "focus-padding", &focus_pad,
6056                         "horizontal-separator", &horizontal_separator,
6057                         "vertical-separator", &vertical_separator,
6058                         "grid-line-width", &grid_line_width,
6059                         "wide-separators",  &wide_separators,
6060                         "separator-height", &separator_height,
6061                         NULL);
6062
6063   draw_vgrid_lines =
6064     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6065     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6066   draw_hgrid_lines =
6067     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6068     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6069
6070   for (last_column = g_list_last (tree_view->priv->columns);
6071        last_column &&
6072        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6073        last_column = last_column->prev)
6074     ;
6075
6076   for (first_column = g_list_first (tree_view->priv->columns);
6077        first_column &&
6078        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6079        first_column = first_column->next)
6080     ;
6081
6082   for (list = tree_view->priv->columns; list; list = list->next)
6083     {
6084       gint padding = 0;
6085       gint original_width;
6086       gint new_width;
6087       gint row_height;
6088
6089       column = list->data;
6090
6091       if (!gtk_tree_view_column_get_visible (column))
6092         continue;
6093
6094       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6095           !_gtk_tree_view_column_cell_get_dirty (column))
6096         continue;
6097
6098       original_width = _gtk_tree_view_column_get_requested_width (column);
6099
6100       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6101                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6102                                                node->children?TRUE:FALSE);
6103       gtk_tree_view_column_cell_get_size (column,
6104                                           NULL, NULL, NULL,
6105                                           NULL, &row_height);
6106
6107       if (!is_separator)
6108         {
6109           row_height += vertical_separator;
6110           height = MAX (height, row_height);
6111           height = MAX (height, tree_view->priv->expander_size);
6112         }
6113       else
6114         {
6115           if (wide_separators)
6116             height = separator_height + 2 * focus_pad;
6117           else
6118             height = 2 + 2 * focus_pad;
6119         }
6120
6121       if (gtk_tree_view_is_expander_column (tree_view, column))
6122         {
6123           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6124
6125           if (gtk_tree_view_draw_expanders (tree_view))
6126             padding += depth * tree_view->priv->expander_size;
6127         }
6128       else
6129         padding += horizontal_separator;
6130
6131       if (draw_vgrid_lines)
6132         {
6133           if (list->data == first_column || list->data == last_column)
6134             padding += grid_line_width / 2.0;
6135           else
6136             padding += grid_line_width;
6137         }
6138
6139       /* Update the padding for the column */
6140       _gtk_tree_view_column_push_padding (column, padding);
6141       new_width = _gtk_tree_view_column_get_requested_width (column);
6142
6143       if (new_width > original_width)
6144         retval = TRUE;
6145     }
6146
6147   if (draw_hgrid_lines)
6148     height += grid_line_width;
6149
6150   if (height != GTK_RBNODE_GET_HEIGHT (node))
6151     {
6152       retval = TRUE;
6153       _gtk_rbtree_node_set_height (tree, node, height);
6154     }
6155   _gtk_rbtree_node_mark_valid (tree, node);
6156   tree_view->priv->post_validation_flag = TRUE;
6157
6158   return retval;
6159 }
6160
6161
6162 static void
6163 validate_visible_area (GtkTreeView *tree_view)
6164 {
6165   GtkAllocation allocation;
6166   GtkTreePath *path = NULL;
6167   GtkTreePath *above_path = NULL;
6168   GtkTreeIter iter;
6169   GtkRBTree *tree = NULL;
6170   GtkRBNode *node = NULL;
6171   gboolean need_redraw = FALSE;
6172   gboolean size_changed = FALSE;
6173   gint total_height;
6174   gint area_above = 0;
6175   gint area_below = 0;
6176
6177   if (tree_view->priv->tree == NULL)
6178     return;
6179
6180   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6181       tree_view->priv->scroll_to_path == NULL)
6182     return;
6183
6184   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6185   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6186
6187   if (total_height == 0)
6188     return;
6189
6190   /* First, we check to see if we need to scroll anywhere
6191    */
6192   if (tree_view->priv->scroll_to_path)
6193     {
6194       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6195       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6196         {
6197           /* we are going to scroll, and will update dy */
6198           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6199           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6200               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6201             {
6202               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6203               if (validate_row (tree_view, tree, node, &iter, path))
6204                 size_changed = TRUE;
6205             }
6206
6207           if (tree_view->priv->scroll_to_use_align)
6208             {
6209               gint height = gtk_tree_view_get_row_height (tree_view, node);
6210               area_above = (total_height - height) *
6211                 tree_view->priv->scroll_to_row_align;
6212               area_below = total_height - area_above - height;
6213               area_above = MAX (area_above, 0);
6214               area_below = MAX (area_below, 0);
6215             }
6216           else
6217             {
6218               /* two cases:
6219                * 1) row not visible
6220                * 2) row visible
6221                */
6222               gint dy;
6223               gint height = gtk_tree_view_get_row_height (tree_view, node);
6224
6225               dy = _gtk_rbtree_node_find_offset (tree, node);
6226
6227               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6228                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6229                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6230                 {
6231                   /* row visible: keep the row at the same position */
6232                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6233                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6234                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6235                                - dy - height;
6236                 }
6237               else
6238                 {
6239                   /* row not visible */
6240                   if (dy >= 0
6241                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6242                     {
6243                       /* row at the beginning -- fixed */
6244                       area_above = dy;
6245                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6246                                    - area_above - height;
6247                     }
6248                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6249                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6250                     {
6251                       /* row at the end -- fixed */
6252                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6253                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6254                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6255                                    area_above - height;
6256
6257                       if (area_below < 0)
6258                         {
6259                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6260                           area_below = 0;
6261                         }
6262                     }
6263                   else
6264                     {
6265                       /* row somewhere in the middle, bring it to the top
6266                        * of the view
6267                        */
6268                       area_above = 0;
6269                       area_below = total_height - height;
6270                     }
6271                 }
6272             }
6273         }
6274       else
6275         /* the scroll to isn't valid; ignore it.
6276          */
6277         {
6278           if (tree_view->priv->scroll_to_path && !path)
6279             {
6280               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6281               tree_view->priv->scroll_to_path = NULL;
6282             }
6283           if (path)
6284             gtk_tree_path_free (path);
6285           path = NULL;
6286         }
6287     }
6288
6289   /* We didn't have a scroll_to set, so we just handle things normally
6290    */
6291   if (path == NULL)
6292     {
6293       gint offset;
6294
6295       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6296                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6297                                         &tree, &node);
6298       if (node == NULL)
6299         {
6300           /* In this case, nothing has been validated */
6301           path = gtk_tree_path_new_first ();
6302           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6303         }
6304       else
6305         {
6306           path = _gtk_tree_view_find_path (tree_view, tree, node);
6307           total_height += offset;
6308         }
6309
6310       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6311
6312       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6313           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6314         {
6315           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6316           if (validate_row (tree_view, tree, node, &iter, path))
6317             size_changed = TRUE;
6318         }
6319       area_above = 0;
6320       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6321     }
6322
6323   above_path = gtk_tree_path_copy (path);
6324
6325   /* if we do not validate any row above the new top_row, we will make sure
6326    * that the row immediately above top_row has been validated. (if we do not
6327    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6328    * when invalidated that row's height will be zero. and this will mess up
6329    * scrolling).
6330    */
6331   if (area_above == 0)
6332     {
6333       GtkRBTree *tmptree;
6334       GtkRBNode *tmpnode;
6335
6336       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6337       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6338
6339       if (tmpnode)
6340         {
6341           GtkTreePath *tmppath;
6342           GtkTreeIter tmpiter;
6343
6344           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6345           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6346
6347           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6348               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6349             {
6350               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6351               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6352                 size_changed = TRUE;
6353             }
6354
6355           gtk_tree_path_free (tmppath);
6356         }
6357     }
6358
6359   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6360    * backwards is much slower then forward, as there is no iter_prev function.
6361    * We go forwards first in case we run out of tree.  Then we go backwards to
6362    * fill out the top.
6363    */
6364   while (node && area_below > 0)
6365     {
6366       if (node->children)
6367         {
6368           GtkTreeIter parent = iter;
6369           gboolean has_child;
6370
6371           tree = node->children;
6372           node = tree->root;
6373
6374           g_assert (node != tree->nil);
6375
6376           while (node->left != tree->nil)
6377             node = node->left;
6378           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6379                                                     &iter,
6380                                                     &parent);
6381           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6382           gtk_tree_path_down (path);
6383         }
6384       else
6385         {
6386           gboolean done = FALSE;
6387           do
6388             {
6389               node = _gtk_rbtree_next (tree, node);
6390               if (node != NULL)
6391                 {
6392                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6393                   done = TRUE;
6394                   gtk_tree_path_next (path);
6395
6396                   /* Sanity Check! */
6397                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6398                 }
6399               else
6400                 {
6401                   GtkTreeIter parent_iter = iter;
6402                   gboolean has_parent;
6403
6404                   node = tree->parent_node;
6405                   tree = tree->parent_tree;
6406                   if (tree == NULL)
6407                     break;
6408                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6409                                                            &iter,
6410                                                            &parent_iter);
6411                   gtk_tree_path_up (path);
6412
6413                   /* Sanity check */
6414                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6415                 }
6416             }
6417           while (!done);
6418         }
6419
6420       if (!node)
6421         break;
6422
6423       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6424           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6425         {
6426           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6427           if (validate_row (tree_view, tree, node, &iter, path))
6428               size_changed = TRUE;
6429         }
6430
6431       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6432     }
6433   gtk_tree_path_free (path);
6434
6435   /* If we ran out of tree, and have extra area_below left, we need to add it
6436    * to area_above */
6437   if (area_below > 0)
6438     area_above += area_below;
6439
6440   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6441
6442   /* We walk backwards */
6443   while (area_above > 0)
6444     {
6445       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6446
6447       /* Always find the new path in the tree.  We cannot just assume
6448        * a gtk_tree_path_prev() is enough here, as there might be children
6449        * in between this node and the previous sibling node.  If this
6450        * appears to be a performance hotspot in profiles, we can look into
6451        * intrigate logic for keeping path, node and iter in sync like
6452        * we do for forward walks.  (Which will be hard because of the lacking
6453        * iter_prev).
6454        */
6455
6456       if (node == NULL)
6457         break;
6458
6459       gtk_tree_path_free (above_path);
6460       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6461
6462       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6463
6464       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6465           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6466         {
6467           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6468           if (validate_row (tree_view, tree, node, &iter, above_path))
6469             size_changed = TRUE;
6470         }
6471       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6472     }
6473
6474   /* if we scrolled to a path, we need to set the dy here,
6475    * and sync the top row accordingly
6476    */
6477   if (tree_view->priv->scroll_to_path)
6478     {
6479       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6480       gtk_tree_view_top_row_to_dy (tree_view);
6481
6482       need_redraw = TRUE;
6483     }
6484   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6485     {
6486       /* when we are not scrolling, we should never set dy to something
6487        * else than zero. we update top_row to be in sync with dy = 0.
6488        */
6489       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6490       gtk_tree_view_dy_to_top_row (tree_view);
6491     }
6492   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6493     {
6494       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6495       gtk_tree_view_dy_to_top_row (tree_view);
6496     }
6497   else
6498     gtk_tree_view_top_row_to_dy (tree_view);
6499
6500   /* update width/height and queue a resize */
6501   if (size_changed)
6502     {
6503       GtkRequisition requisition;
6504
6505       /* We temporarily guess a size, under the assumption that it will be the
6506        * same when we get our next size_allocate.  If we don't do this, we'll be
6507        * in an inconsistent state if we call top_row_to_dy. */
6508
6509       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6510                                      &requisition, NULL);
6511       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6512                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6513       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6514                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6515       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6516     }
6517
6518   if (tree_view->priv->scroll_to_path)
6519     {
6520       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6521       tree_view->priv->scroll_to_path = NULL;
6522     }
6523
6524   if (above_path)
6525     gtk_tree_path_free (above_path);
6526
6527   if (tree_view->priv->scroll_to_column)
6528     {
6529       tree_view->priv->scroll_to_column = NULL;
6530     }
6531   if (need_redraw)
6532     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6533 }
6534
6535 static void
6536 initialize_fixed_height_mode (GtkTreeView *tree_view)
6537 {
6538   if (!tree_view->priv->tree)
6539     return;
6540
6541   if (tree_view->priv->fixed_height < 0)
6542     {
6543       GtkTreeIter iter;
6544       GtkTreePath *path;
6545
6546       GtkRBTree *tree = NULL;
6547       GtkRBNode *node = NULL;
6548
6549       tree = tree_view->priv->tree;
6550       node = tree->root;
6551
6552       path = _gtk_tree_view_find_path (tree_view, tree, node);
6553       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6554
6555       validate_row (tree_view, tree, node, &iter, path);
6556
6557       gtk_tree_path_free (path);
6558
6559       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6560     }
6561
6562    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6563                                  tree_view->priv->fixed_height, TRUE);
6564 }
6565
6566 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6567  * the left-most uninvalidated node.  We then try walking right, validating
6568  * nodes.  Once we find a valid node, we repeat the previous process of finding
6569  * the first invalid node.
6570  */
6571
6572 static gboolean
6573 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6574 {
6575   GtkRBTree *tree = NULL;
6576   GtkRBNode *node = NULL;
6577   gboolean validated_area = FALSE;
6578   gint retval = TRUE;
6579   GtkTreePath *path = NULL;
6580   GtkTreeIter iter;
6581   GTimer *timer;
6582   gint i = 0;
6583
6584   gint y = -1;
6585   gint prev_height = -1;
6586   gboolean fixed_height = TRUE;
6587
6588   g_assert (tree_view);
6589
6590   if (tree_view->priv->tree == NULL)
6591       return FALSE;
6592
6593   if (tree_view->priv->fixed_height_mode)
6594     {
6595       if (tree_view->priv->fixed_height < 0)
6596         initialize_fixed_height_mode (tree_view);
6597
6598       return FALSE;
6599     }
6600
6601   timer = g_timer_new ();
6602   g_timer_start (timer);
6603
6604   do
6605     {
6606       gboolean changed = FALSE;
6607
6608       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6609         {
6610           retval = FALSE;
6611           goto done;
6612         }
6613
6614       if (path != NULL)
6615         {
6616           node = _gtk_rbtree_next (tree, node);
6617           if (node != NULL)
6618             {
6619               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6620               gtk_tree_path_next (path);
6621             }
6622           else
6623             {
6624               gtk_tree_path_free (path);
6625               path = NULL;
6626             }
6627         }
6628
6629       if (path == NULL)
6630         {
6631           tree = tree_view->priv->tree;
6632           node = tree_view->priv->tree->root;
6633
6634           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6635
6636           do
6637             {
6638               if (node->left != tree->nil &&
6639                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6640                 {
6641                   node = node->left;
6642                 }
6643               else if (node->right != tree->nil &&
6644                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6645                 {
6646                   node = node->right;
6647                 }
6648               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6649                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6650                 {
6651                   break;
6652                 }
6653               else if (node->children != NULL)
6654                 {
6655                   tree = node->children;
6656                   node = tree->root;
6657                 }
6658               else
6659                 /* RBTree corruption!  All bad */
6660                 g_assert_not_reached ();
6661             }
6662           while (TRUE);
6663           path = _gtk_tree_view_find_path (tree_view, tree, node);
6664           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6665         }
6666
6667       changed = validate_row (tree_view, tree, node, &iter, path);
6668       validated_area = changed || validated_area;
6669
6670       if (changed)
6671         {
6672           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6673
6674           if (y == -1 || y > offset)
6675             y = offset;
6676         }
6677
6678       if (!tree_view->priv->fixed_height_check)
6679         {
6680           gint height;
6681
6682           height = gtk_tree_view_get_row_height (tree_view, node);
6683           if (prev_height < 0)
6684             prev_height = height;
6685           else if (prev_height != height)
6686             fixed_height = FALSE;
6687         }
6688
6689       i++;
6690     }
6691   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6692
6693   if (!tree_view->priv->fixed_height_check)
6694    {
6695      if (fixed_height)
6696        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6697
6698      tree_view->priv->fixed_height_check = 1;
6699    }
6700
6701  done:
6702   if (validated_area)
6703     {
6704       GtkRequisition requisition;
6705
6706       /* We temporarily guess a size, under the assumption that it will be the
6707        * same when we get our next size_allocate.  If we don't do this, we'll be
6708        * in an inconsistent state when we call top_row_to_dy. */
6709
6710       /* FIXME: This is called from size_request, for some reason it is not infinitely
6711        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6712        * not allowed (from inside ->get_preferred_width/height() implementations, one
6713        * should call the vfuncs directly). However what is desired here is the full
6714        * size including any margins and limited by any alignment (i.e. after
6715        * GtkWidget:adjust_size_request() is called).
6716        *
6717        * Currently bypassing this but the real solution is to not update the scroll adjustments
6718        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6719        */
6720       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6721
6722       /* If rows above the current position have changed height, this has
6723        * affected the current view and thus needs a redraw.
6724        */
6725       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6726         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6727
6728       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6729                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6730       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6731                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6732
6733       if (queue_resize)
6734         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6735     }
6736
6737   if (path) gtk_tree_path_free (path);
6738   g_timer_destroy (timer);
6739
6740   return retval;
6741 }
6742
6743 static gboolean
6744 validate_rows (GtkTreeView *tree_view)
6745 {
6746   gboolean retval;
6747
6748   retval = do_validate_rows (tree_view, TRUE);
6749
6750   if (! retval && tree_view->priv->validate_rows_timer)
6751     {
6752       g_source_remove (tree_view->priv->validate_rows_timer);
6753       tree_view->priv->validate_rows_timer = 0;
6754     }
6755
6756   return retval;
6757 }
6758
6759 static gboolean
6760 validate_rows_handler (GtkTreeView *tree_view)
6761 {
6762   gboolean retval;
6763
6764   retval = do_validate_rows (tree_view, TRUE);
6765   if (! retval && tree_view->priv->validate_rows_timer)
6766     {
6767       g_source_remove (tree_view->priv->validate_rows_timer);
6768       tree_view->priv->validate_rows_timer = 0;
6769     }
6770
6771   return retval;
6772 }
6773
6774 static gboolean
6775 do_presize_handler (GtkTreeView *tree_view)
6776 {
6777   if (tree_view->priv->mark_rows_col_dirty)
6778     {
6779       if (tree_view->priv->tree)
6780         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6781       tree_view->priv->mark_rows_col_dirty = FALSE;
6782     }
6783   validate_visible_area (tree_view);
6784   tree_view->priv->presize_handler_timer = 0;
6785
6786   if (tree_view->priv->fixed_height_mode)
6787     {
6788       GtkRequisition requisition;
6789
6790       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6791                                      &requisition, NULL);
6792
6793       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6794                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6795       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6796                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6797       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6798     }
6799
6800   return FALSE;
6801 }
6802
6803 static gboolean
6804 presize_handler_callback (gpointer data)
6805 {
6806   do_presize_handler (GTK_TREE_VIEW (data));
6807
6808   return FALSE;
6809 }
6810
6811 static void
6812 install_presize_handler (GtkTreeView *tree_view)
6813 {
6814   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6815     return;
6816
6817   if (! tree_view->priv->presize_handler_timer)
6818     {
6819       tree_view->priv->presize_handler_timer =
6820         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6821     }
6822   if (! tree_view->priv->validate_rows_timer)
6823     {
6824       tree_view->priv->validate_rows_timer =
6825         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6826     }
6827 }
6828
6829 static void
6830 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6831 {
6832   /* Prior to drawing, we make sure the visible area is validated. */
6833   if (tree_view->priv->presize_handler_timer)
6834     {
6835       g_source_remove (tree_view->priv->presize_handler_timer);
6836       tree_view->priv->presize_handler_timer = 0;
6837
6838       do_presize_handler (tree_view);
6839     }
6840
6841   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6842 }
6843
6844 static gboolean
6845 scroll_sync_handler (GtkTreeView *tree_view)
6846 {
6847   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6848     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6849   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6850     gtk_tree_view_top_row_to_dy (tree_view);
6851   else
6852     gtk_tree_view_dy_to_top_row (tree_view);
6853
6854   tree_view->priv->scroll_sync_timer = 0;
6855
6856   return FALSE;
6857 }
6858
6859 static void
6860 install_scroll_sync_handler (GtkTreeView *tree_view)
6861 {
6862   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6863     return;
6864
6865   if (!tree_view->priv->scroll_sync_timer)
6866     {
6867       tree_view->priv->scroll_sync_timer =
6868         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6869     }
6870 }
6871
6872 static void
6873 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6874                            GtkTreePath *path,
6875                            gint         offset)
6876 {
6877   gtk_tree_row_reference_free (tree_view->priv->top_row);
6878
6879   if (!path)
6880     {
6881       tree_view->priv->top_row = NULL;
6882       tree_view->priv->top_row_dy = 0;
6883     }
6884   else
6885     {
6886       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6887       tree_view->priv->top_row_dy = offset;
6888     }
6889 }
6890
6891 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6892  * it's set to be NULL, and top_row_dy is 0;
6893  */
6894 static void
6895 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6896 {
6897   gint offset;
6898   GtkTreePath *path;
6899   GtkRBTree *tree;
6900   GtkRBNode *node;
6901
6902   if (tree_view->priv->tree == NULL)
6903     {
6904       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6905     }
6906   else
6907     {
6908       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6909                                         tree_view->priv->dy,
6910                                         &tree, &node);
6911
6912       if (tree == NULL)
6913         {
6914           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6915         }
6916       else
6917         {
6918           path = _gtk_tree_view_find_path (tree_view, tree, node);
6919           gtk_tree_view_set_top_row (tree_view, path, offset);
6920           gtk_tree_path_free (path);
6921         }
6922     }
6923 }
6924
6925 static void
6926 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6927 {
6928   GtkTreePath *path;
6929   GtkRBTree *tree;
6930   GtkRBNode *node;
6931   int new_dy;
6932
6933   /* Avoid recursive calls */
6934   if (tree_view->priv->in_top_row_to_dy)
6935     return;
6936
6937   if (tree_view->priv->top_row)
6938     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6939   else
6940     path = NULL;
6941
6942   if (!path)
6943     tree = NULL;
6944   else
6945     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6946
6947   if (path)
6948     gtk_tree_path_free (path);
6949
6950   if (tree == NULL)
6951     {
6952       /* keep dy and set new toprow */
6953       gtk_tree_row_reference_free (tree_view->priv->top_row);
6954       tree_view->priv->top_row = NULL;
6955       tree_view->priv->top_row_dy = 0;
6956       /* DO NOT install the idle handler */
6957       gtk_tree_view_dy_to_top_row (tree_view);
6958       return;
6959     }
6960
6961   if (gtk_tree_view_get_row_height (tree_view, node)
6962       < tree_view->priv->top_row_dy)
6963     {
6964       /* new top row -- do NOT install the idle handler */
6965       gtk_tree_view_dy_to_top_row (tree_view);
6966       return;
6967     }
6968
6969   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6970   new_dy += tree_view->priv->top_row_dy;
6971
6972   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6973     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6974
6975   new_dy = MAX (0, new_dy);
6976
6977   tree_view->priv->in_top_row_to_dy = TRUE;
6978   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6979   tree_view->priv->in_top_row_to_dy = FALSE;
6980 }
6981
6982
6983 void
6984 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6985                                             gboolean     install_handler)
6986 {
6987   tree_view->priv->mark_rows_col_dirty = TRUE;
6988
6989   if (install_handler)
6990     install_presize_handler (tree_view);
6991 }
6992
6993 /*
6994  * This function works synchronously (due to the while (validate_rows...)
6995  * loop).
6996  *
6997  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6998  * here. You now need to check that yourself.
6999  */
7000 void
7001 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
7002                                 GtkTreeViewColumn *column)
7003 {
7004   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7005   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
7006
7007   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
7008
7009   do_presize_handler (tree_view);
7010   while (validate_rows (tree_view));
7011
7012   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7013 }
7014
7015 /* Drag-and-drop */
7016
7017 static void
7018 set_source_row (GdkDragContext *context,
7019                 GtkTreeModel   *model,
7020                 GtkTreePath    *source_row)
7021 {
7022   g_object_set_data_full (G_OBJECT (context),
7023                           I_("gtk-tree-view-source-row"),
7024                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7025                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7026 }
7027
7028 static GtkTreePath*
7029 get_source_row (GdkDragContext *context)
7030 {
7031   GtkTreeRowReference *ref =
7032     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7033
7034   if (ref)
7035     return gtk_tree_row_reference_get_path (ref);
7036   else
7037     return NULL;
7038 }
7039
7040 typedef struct
7041 {
7042   GtkTreeRowReference *dest_row;
7043   guint                path_down_mode   : 1;
7044   guint                empty_view_drop  : 1;
7045   guint                drop_append_mode : 1;
7046 }
7047 DestRow;
7048
7049 static void
7050 dest_row_free (gpointer data)
7051 {
7052   DestRow *dr = (DestRow *)data;
7053
7054   gtk_tree_row_reference_free (dr->dest_row);
7055   g_slice_free (DestRow, dr);
7056 }
7057
7058 static void
7059 set_dest_row (GdkDragContext *context,
7060               GtkTreeModel   *model,
7061               GtkTreePath    *dest_row,
7062               gboolean        path_down_mode,
7063               gboolean        empty_view_drop,
7064               gboolean        drop_append_mode)
7065 {
7066   DestRow *dr;
7067
7068   if (!dest_row)
7069     {
7070       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7071                               NULL, NULL);
7072       return;
7073     }
7074
7075   dr = g_slice_new (DestRow);
7076
7077   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7078   dr->path_down_mode = path_down_mode != FALSE;
7079   dr->empty_view_drop = empty_view_drop != FALSE;
7080   dr->drop_append_mode = drop_append_mode != FALSE;
7081
7082   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7083                           dr, (GDestroyNotify) dest_row_free);
7084 }
7085
7086 static GtkTreePath*
7087 get_dest_row (GdkDragContext *context,
7088               gboolean       *path_down_mode)
7089 {
7090   DestRow *dr =
7091     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7092
7093   if (dr)
7094     {
7095       GtkTreePath *path = NULL;
7096
7097       if (path_down_mode)
7098         *path_down_mode = dr->path_down_mode;
7099
7100       if (dr->dest_row)
7101         path = gtk_tree_row_reference_get_path (dr->dest_row);
7102       else if (dr->empty_view_drop)
7103         path = gtk_tree_path_new_from_indices (0, -1);
7104       else
7105         path = NULL;
7106
7107       if (path && dr->drop_append_mode)
7108         gtk_tree_path_next (path);
7109
7110       return path;
7111     }
7112   else
7113     return NULL;
7114 }
7115
7116 /* Get/set whether drag_motion requested the drag data and
7117  * drag_data_received should thus not actually insert the data,
7118  * since the data doesn't result from a drop.
7119  */
7120 static void
7121 set_status_pending (GdkDragContext *context,
7122                     GdkDragAction   suggested_action)
7123 {
7124   g_object_set_data (G_OBJECT (context),
7125                      I_("gtk-tree-view-status-pending"),
7126                      GINT_TO_POINTER (suggested_action));
7127 }
7128
7129 static GdkDragAction
7130 get_status_pending (GdkDragContext *context)
7131 {
7132   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7133                                              "gtk-tree-view-status-pending"));
7134 }
7135
7136 static TreeViewDragInfo*
7137 get_info (GtkTreeView *tree_view)
7138 {
7139   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7140 }
7141
7142 static void
7143 destroy_info (TreeViewDragInfo *di)
7144 {
7145   g_slice_free (TreeViewDragInfo, di);
7146 }
7147
7148 static TreeViewDragInfo*
7149 ensure_info (GtkTreeView *tree_view)
7150 {
7151   TreeViewDragInfo *di;
7152
7153   di = get_info (tree_view);
7154
7155   if (di == NULL)
7156     {
7157       di = g_slice_new0 (TreeViewDragInfo);
7158
7159       g_object_set_data_full (G_OBJECT (tree_view),
7160                               I_("gtk-tree-view-drag-info"),
7161                               di,
7162                               (GDestroyNotify) destroy_info);
7163     }
7164
7165   return di;
7166 }
7167
7168 static void
7169 remove_info (GtkTreeView *tree_view)
7170 {
7171   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7172 }
7173
7174 #if 0
7175 static gint
7176 drag_scan_timeout (gpointer data)
7177 {
7178   GtkTreeView *tree_view;
7179   gint x, y;
7180   GdkModifierType state;
7181   GtkTreePath *path = NULL;
7182   GtkTreeViewColumn *column = NULL;
7183   GdkRectangle visible_rect;
7184
7185   GDK_THREADS_ENTER ();
7186
7187   tree_view = GTK_TREE_VIEW (data);
7188
7189   gdk_window_get_device_position (tree_view->priv->bin_window,
7190                                   gdk_device_manager_get_client_pointer (
7191                                     gdk_display_get_device_manager (
7192                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7193                                   &x, &y, &state);
7194
7195   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7196
7197   /* See if we are near the edge. */
7198   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7199       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7200       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7201       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7202     {
7203       gtk_tree_view_get_path_at_pos (tree_view,
7204                                      tree_view->priv->bin_window,
7205                                      x, y,
7206                                      &path,
7207                                      &column,
7208                                      NULL,
7209                                      NULL);
7210
7211       if (path != NULL)
7212         {
7213           gtk_tree_view_scroll_to_cell (tree_view,
7214                                         path,
7215                                         column,
7216                                         TRUE,
7217                                         0.5, 0.5);
7218
7219           gtk_tree_path_free (path);
7220         }
7221     }
7222
7223   GDK_THREADS_LEAVE ();
7224
7225   return TRUE;
7226 }
7227 #endif /* 0 */
7228
7229 static void
7230 add_scroll_timeout (GtkTreeView *tree_view)
7231 {
7232   if (tree_view->priv->scroll_timeout == 0)
7233     {
7234       tree_view->priv->scroll_timeout =
7235         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7236     }
7237 }
7238
7239 static void
7240 remove_scroll_timeout (GtkTreeView *tree_view)
7241 {
7242   if (tree_view->priv->scroll_timeout != 0)
7243     {
7244       g_source_remove (tree_view->priv->scroll_timeout);
7245       tree_view->priv->scroll_timeout = 0;
7246     }
7247 }
7248
7249 static gboolean
7250 check_model_dnd (GtkTreeModel *model,
7251                  GType         required_iface,
7252                  const gchar  *signal)
7253 {
7254   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7255     {
7256       g_warning ("You must override the default '%s' handler "
7257                  "on GtkTreeView when using models that don't support "
7258                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7259                  "is to connect to '%s' and call "
7260                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7261                  "the default handler from running. Look at the source code "
7262                  "for the default handler in gtktreeview.c to get an idea what "
7263                  "your handler should do. (gtktreeview.c is in the GTK source "
7264                  "code.) If you're using GTK from a language other than C, "
7265                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7266                  signal, g_type_name (required_iface), signal);
7267       return FALSE;
7268     }
7269   else
7270     return TRUE;
7271 }
7272
7273 static void
7274 remove_open_timeout (GtkTreeView *tree_view)
7275 {
7276   if (tree_view->priv->open_dest_timeout != 0)
7277     {
7278       g_source_remove (tree_view->priv->open_dest_timeout);
7279       tree_view->priv->open_dest_timeout = 0;
7280     }
7281 }
7282
7283
7284 static gint
7285 open_row_timeout (gpointer data)
7286 {
7287   GtkTreeView *tree_view = data;
7288   GtkTreePath *dest_path = NULL;
7289   GtkTreeViewDropPosition pos;
7290   gboolean result = FALSE;
7291
7292   gtk_tree_view_get_drag_dest_row (tree_view,
7293                                    &dest_path,
7294                                    &pos);
7295
7296   if (dest_path &&
7297       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7298        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7299     {
7300       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7301       tree_view->priv->open_dest_timeout = 0;
7302
7303       gtk_tree_path_free (dest_path);
7304     }
7305   else
7306     {
7307       if (dest_path)
7308         gtk_tree_path_free (dest_path);
7309
7310       result = TRUE;
7311     }
7312
7313   return result;
7314 }
7315
7316 static gboolean
7317 scroll_row_timeout (gpointer data)
7318 {
7319   GtkTreeView *tree_view = data;
7320
7321   gtk_tree_view_vertical_autoscroll (tree_view);
7322
7323   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7324     gtk_tree_view_update_rubber_band (tree_view);
7325
7326   return TRUE;
7327 }
7328
7329 /* Returns TRUE if event should not be propagated to parent widgets */
7330 static gboolean
7331 set_destination_row (GtkTreeView    *tree_view,
7332                      GdkDragContext *context,
7333                      /* coordinates relative to the widget */
7334                      gint            x,
7335                      gint            y,
7336                      GdkDragAction  *suggested_action,
7337                      GdkAtom        *target)
7338 {
7339   GtkTreePath *path = NULL;
7340   GtkTreeViewDropPosition pos;
7341   GtkTreeViewDropPosition old_pos;
7342   TreeViewDragInfo *di;
7343   GtkWidget *widget;
7344   GtkTreePath *old_dest_path = NULL;
7345   gboolean can_drop = FALSE;
7346
7347   *suggested_action = 0;
7348   *target = GDK_NONE;
7349
7350   widget = GTK_WIDGET (tree_view);
7351
7352   di = get_info (tree_view);
7353
7354   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7355     {
7356       /* someone unset us as a drag dest, note that if
7357        * we return FALSE drag_leave isn't called
7358        */
7359
7360       gtk_tree_view_set_drag_dest_row (tree_view,
7361                                        NULL,
7362                                        GTK_TREE_VIEW_DROP_BEFORE);
7363
7364       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7365       remove_open_timeout (GTK_TREE_VIEW (widget));
7366
7367       return FALSE; /* no longer a drop site */
7368     }
7369
7370   *target = gtk_drag_dest_find_target (widget, context,
7371                                        gtk_drag_dest_get_target_list (widget));
7372   if (*target == GDK_NONE)
7373     {
7374       return FALSE;
7375     }
7376
7377   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7378                                           x, y,
7379                                           &path,
7380                                           &pos))
7381     {
7382       gint n_children;
7383       GtkTreeModel *model;
7384
7385       remove_open_timeout (tree_view);
7386
7387       /* the row got dropped on empty space, let's setup a special case
7388        */
7389
7390       if (path)
7391         gtk_tree_path_free (path);
7392
7393       model = gtk_tree_view_get_model (tree_view);
7394
7395       n_children = gtk_tree_model_iter_n_children (model, NULL);
7396       if (n_children)
7397         {
7398           pos = GTK_TREE_VIEW_DROP_AFTER;
7399           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7400         }
7401       else
7402         {
7403           pos = GTK_TREE_VIEW_DROP_BEFORE;
7404           path = gtk_tree_path_new_from_indices (0, -1);
7405         }
7406
7407       can_drop = TRUE;
7408
7409       goto out;
7410     }
7411
7412   g_assert (path);
7413
7414   /* If we left the current row's "open" zone, unset the timeout for
7415    * opening the row
7416    */
7417   gtk_tree_view_get_drag_dest_row (tree_view,
7418                                    &old_dest_path,
7419                                    &old_pos);
7420
7421   if (old_dest_path &&
7422       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7423        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7424          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7425     remove_open_timeout (tree_view);
7426
7427   if (old_dest_path)
7428     gtk_tree_path_free (old_dest_path);
7429
7430   if (TRUE /* FIXME if the location droppable predicate */)
7431     {
7432       can_drop = TRUE;
7433     }
7434
7435 out:
7436   if (can_drop)
7437     {
7438       GtkWidget *source_widget;
7439
7440       *suggested_action = gdk_drag_context_get_suggested_action (context);
7441       source_widget = gtk_drag_get_source_widget (context);
7442
7443       if (source_widget == widget)
7444         {
7445           /* Default to MOVE, unless the user has
7446            * pressed ctrl or shift to affect available actions
7447            */
7448           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7449             *suggested_action = GDK_ACTION_MOVE;
7450         }
7451
7452       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7453                                        path, pos);
7454     }
7455   else
7456     {
7457       /* can't drop here */
7458       remove_open_timeout (tree_view);
7459
7460       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7461                                        NULL,
7462                                        GTK_TREE_VIEW_DROP_BEFORE);
7463     }
7464
7465   if (path)
7466     gtk_tree_path_free (path);
7467
7468   return TRUE;
7469 }
7470
7471 static GtkTreePath*
7472 get_logical_dest_row (GtkTreeView *tree_view,
7473                       gboolean    *path_down_mode,
7474                       gboolean    *drop_append_mode)
7475 {
7476   /* adjust path to point to the row the drop goes in front of */
7477   GtkTreePath *path = NULL;
7478   GtkTreeViewDropPosition pos;
7479
7480   g_return_val_if_fail (path_down_mode != NULL, NULL);
7481   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7482
7483   *path_down_mode = FALSE;
7484   *drop_append_mode = 0;
7485
7486   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7487
7488   if (path == NULL)
7489     return NULL;
7490
7491   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7492     ; /* do nothing */
7493   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7494            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7495     *path_down_mode = TRUE;
7496   else
7497     {
7498       GtkTreeIter iter;
7499       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7500
7501       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7502
7503       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7504           !gtk_tree_model_iter_next (model, &iter))
7505         *drop_append_mode = 1;
7506       else
7507         {
7508           *drop_append_mode = 0;
7509           gtk_tree_path_next (path);
7510         }
7511     }
7512
7513   return path;
7514 }
7515
7516 static gboolean
7517 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7518                                         GdkEventMotion   *event)
7519 {
7520   GtkWidget *widget = GTK_WIDGET (tree_view);
7521   GdkDragContext *context;
7522   TreeViewDragInfo *di;
7523   GtkTreePath *path = NULL;
7524   gint button;
7525   gint cell_x, cell_y;
7526   GtkTreeModel *model;
7527   gboolean retval = FALSE;
7528
7529   di = get_info (tree_view);
7530
7531   if (di == NULL || !di->source_set)
7532     goto out;
7533
7534   if (tree_view->priv->pressed_button < 0)
7535     goto out;
7536
7537   if (!gtk_drag_check_threshold (widget,
7538                                  tree_view->priv->press_start_x,
7539                                  tree_view->priv->press_start_y,
7540                                  event->x, event->y))
7541     goto out;
7542
7543   model = gtk_tree_view_get_model (tree_view);
7544
7545   if (model == NULL)
7546     goto out;
7547
7548   button = tree_view->priv->pressed_button;
7549   tree_view->priv->pressed_button = -1;
7550
7551   gtk_tree_view_get_path_at_pos (tree_view,
7552                                  tree_view->priv->press_start_x,
7553                                  tree_view->priv->press_start_y,
7554                                  &path,
7555                                  NULL,
7556                                  &cell_x,
7557                                  &cell_y);
7558
7559   if (path == NULL)
7560     goto out;
7561
7562   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7563       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7564                                            path))
7565     goto out;
7566
7567   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7568     goto out;
7569
7570   /* Now we can begin the drag */
7571
7572   retval = TRUE;
7573
7574   context = gtk_drag_begin (widget,
7575                             gtk_drag_source_get_target_list (widget),
7576                             di->source_actions,
7577                             button,
7578                             (GdkEvent*)event);
7579
7580   set_source_row (context, model, path);
7581
7582  out:
7583   if (path)
7584     gtk_tree_path_free (path);
7585
7586   return retval;
7587 }
7588
7589
7590 static void
7591 gtk_tree_view_drag_begin (GtkWidget      *widget,
7592                           GdkDragContext *context)
7593 {
7594   GtkTreeView *tree_view;
7595   GtkTreePath *path = NULL;
7596   gint cell_x, cell_y;
7597   cairo_surface_t *row_pix;
7598   TreeViewDragInfo *di;
7599
7600   tree_view = GTK_TREE_VIEW (widget);
7601
7602   /* if the user uses a custom DND source impl, we don't set the icon here */
7603   di = get_info (tree_view);
7604
7605   if (di == NULL || !di->source_set)
7606     return;
7607
7608   gtk_tree_view_get_path_at_pos (tree_view,
7609                                  tree_view->priv->press_start_x,
7610                                  tree_view->priv->press_start_y,
7611                                  &path,
7612                                  NULL,
7613                                  &cell_x,
7614                                  &cell_y);
7615
7616   g_return_if_fail (path != NULL);
7617
7618   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7619                                                 path);
7620   cairo_surface_set_device_offset (row_pix,
7621                                    /* the + 1 is for the black border in the icon */
7622                                    - (tree_view->priv->press_start_x + 1),
7623                                    - (cell_y + 1));
7624
7625   gtk_drag_set_icon_surface (context, row_pix);
7626
7627   cairo_surface_destroy (row_pix);
7628   gtk_tree_path_free (path);
7629 }
7630
7631 static void
7632 gtk_tree_view_drag_end (GtkWidget      *widget,
7633                         GdkDragContext *context)
7634 {
7635   /* do nothing */
7636 }
7637
7638 /* Default signal implementations for the drag signals */
7639 static void
7640 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7641                              GdkDragContext   *context,
7642                              GtkSelectionData *selection_data,
7643                              guint             info,
7644                              guint             time)
7645 {
7646   GtkTreeView *tree_view;
7647   GtkTreeModel *model;
7648   TreeViewDragInfo *di;
7649   GtkTreePath *source_row;
7650
7651   tree_view = GTK_TREE_VIEW (widget);
7652
7653   model = gtk_tree_view_get_model (tree_view);
7654
7655   if (model == NULL)
7656     return;
7657
7658   di = get_info (GTK_TREE_VIEW (widget));
7659
7660   if (di == NULL)
7661     return;
7662
7663   source_row = get_source_row (context);
7664
7665   if (source_row == NULL)
7666     return;
7667
7668   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7669    * any model; for DragSource models there are some other targets
7670    * we also support.
7671    */
7672
7673   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7674       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7675                                           source_row,
7676                                           selection_data))
7677     goto done;
7678
7679   /* If drag_data_get does nothing, try providing row data. */
7680   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7681     {
7682       gtk_tree_set_row_drag_data (selection_data,
7683                                   model,
7684                                   source_row);
7685     }
7686
7687  done:
7688   gtk_tree_path_free (source_row);
7689 }
7690
7691
7692 static void
7693 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7694                                 GdkDragContext *context)
7695 {
7696   TreeViewDragInfo *di;
7697   GtkTreeModel *model;
7698   GtkTreeView *tree_view;
7699   GtkTreePath *source_row;
7700
7701   tree_view = GTK_TREE_VIEW (widget);
7702   model = gtk_tree_view_get_model (tree_view);
7703
7704   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7705     return;
7706
7707   di = get_info (tree_view);
7708
7709   if (di == NULL)
7710     return;
7711
7712   source_row = get_source_row (context);
7713
7714   if (source_row == NULL)
7715     return;
7716
7717   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7718                                          source_row);
7719
7720   gtk_tree_path_free (source_row);
7721
7722   set_source_row (context, NULL, NULL);
7723 }
7724
7725 static void
7726 gtk_tree_view_drag_leave (GtkWidget      *widget,
7727                           GdkDragContext *context,
7728                           guint             time)
7729 {
7730   /* unset any highlight row */
7731   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7732                                    NULL,
7733                                    GTK_TREE_VIEW_DROP_BEFORE);
7734
7735   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7736   remove_open_timeout (GTK_TREE_VIEW (widget));
7737 }
7738
7739
7740 static gboolean
7741 gtk_tree_view_drag_motion (GtkWidget        *widget,
7742                            GdkDragContext   *context,
7743                            /* coordinates relative to the widget */
7744                            gint              x,
7745                            gint              y,
7746                            guint             time)
7747 {
7748   gboolean empty;
7749   GtkTreePath *path = NULL;
7750   GtkTreeViewDropPosition pos;
7751   GtkTreeView *tree_view;
7752   GdkDragAction suggested_action = 0;
7753   GdkAtom target;
7754
7755   tree_view = GTK_TREE_VIEW (widget);
7756
7757   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7758     return FALSE;
7759
7760   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7761
7762   /* we only know this *after* set_desination_row */
7763   empty = tree_view->priv->empty_view_drop;
7764
7765   if (path == NULL && !empty)
7766     {
7767       /* Can't drop here. */
7768       gdk_drag_status (context, 0, time);
7769     }
7770   else
7771     {
7772       if (tree_view->priv->open_dest_timeout == 0 &&
7773           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7774            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7775         {
7776           tree_view->priv->open_dest_timeout =
7777             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7778         }
7779       else
7780         {
7781           add_scroll_timeout (tree_view);
7782         }
7783
7784       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7785         {
7786           /* Request data so we can use the source row when
7787            * determining whether to accept the drop
7788            */
7789           set_status_pending (context, suggested_action);
7790           gtk_drag_get_data (widget, context, target, time);
7791         }
7792       else
7793         {
7794           set_status_pending (context, 0);
7795           gdk_drag_status (context, suggested_action, time);
7796         }
7797     }
7798
7799   if (path)
7800     gtk_tree_path_free (path);
7801
7802   return TRUE;
7803 }
7804
7805
7806 static gboolean
7807 gtk_tree_view_drag_drop (GtkWidget        *widget,
7808                          GdkDragContext   *context,
7809                          /* coordinates relative to the widget */
7810                          gint              x,
7811                          gint              y,
7812                          guint             time)
7813 {
7814   GtkTreeView *tree_view;
7815   GtkTreePath *path;
7816   GdkDragAction suggested_action = 0;
7817   GdkAtom target = GDK_NONE;
7818   TreeViewDragInfo *di;
7819   GtkTreeModel *model;
7820   gboolean path_down_mode;
7821   gboolean drop_append_mode;
7822
7823   tree_view = GTK_TREE_VIEW (widget);
7824
7825   model = gtk_tree_view_get_model (tree_view);
7826
7827   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7828   remove_open_timeout (GTK_TREE_VIEW (widget));
7829
7830   di = get_info (tree_view);
7831
7832   if (di == NULL)
7833     return FALSE;
7834
7835   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7836     return FALSE;
7837
7838   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7839     return FALSE;
7840
7841   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7842
7843   if (target != GDK_NONE && path != NULL)
7844     {
7845       /* in case a motion had requested drag data, change things so we
7846        * treat drag data receives as a drop.
7847        */
7848       set_status_pending (context, 0);
7849       set_dest_row (context, model, path,
7850                     path_down_mode, tree_view->priv->empty_view_drop,
7851                     drop_append_mode);
7852     }
7853
7854   if (path)
7855     gtk_tree_path_free (path);
7856
7857   /* Unset this thing */
7858   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7859                                    NULL,
7860                                    GTK_TREE_VIEW_DROP_BEFORE);
7861
7862   if (target != GDK_NONE)
7863     {
7864       gtk_drag_get_data (widget, context, target, time);
7865       return TRUE;
7866     }
7867   else
7868     return FALSE;
7869 }
7870
7871 static void
7872 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7873                                   GdkDragContext   *context,
7874                                   /* coordinates relative to the widget */
7875                                   gint              x,
7876                                   gint              y,
7877                                   GtkSelectionData *selection_data,
7878                                   guint             info,
7879                                   guint             time)
7880 {
7881   GtkTreePath *path;
7882   TreeViewDragInfo *di;
7883   gboolean accepted = FALSE;
7884   GtkTreeModel *model;
7885   GtkTreeView *tree_view;
7886   GtkTreePath *dest_row;
7887   GdkDragAction suggested_action;
7888   gboolean path_down_mode;
7889   gboolean drop_append_mode;
7890
7891   tree_view = GTK_TREE_VIEW (widget);
7892
7893   model = gtk_tree_view_get_model (tree_view);
7894
7895   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7896     return;
7897
7898   di = get_info (tree_view);
7899
7900   if (di == NULL)
7901     return;
7902
7903   suggested_action = get_status_pending (context);
7904
7905   if (suggested_action)
7906     {
7907       /* We are getting this data due to a request in drag_motion,
7908        * rather than due to a request in drag_drop, so we are just
7909        * supposed to call drag_status, not actually paste in the
7910        * data.
7911        */
7912       path = get_logical_dest_row (tree_view, &path_down_mode,
7913                                    &drop_append_mode);
7914
7915       if (path == NULL)
7916         suggested_action = 0;
7917       else if (path_down_mode)
7918         gtk_tree_path_down (path);
7919
7920       if (suggested_action)
7921         {
7922           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7923                                                      path,
7924                                                      selection_data))
7925             {
7926               if (path_down_mode)
7927                 {
7928                   path_down_mode = FALSE;
7929                   gtk_tree_path_up (path);
7930
7931                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7932                                                              path,
7933                                                              selection_data))
7934                     suggested_action = 0;
7935                 }
7936               else
7937                 suggested_action = 0;
7938             }
7939         }
7940
7941       gdk_drag_status (context, suggested_action, time);
7942
7943       if (path)
7944         gtk_tree_path_free (path);
7945
7946       /* If you can't drop, remove user drop indicator until the next motion */
7947       if (suggested_action == 0)
7948         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7949                                          NULL,
7950                                          GTK_TREE_VIEW_DROP_BEFORE);
7951
7952       return;
7953     }
7954
7955   dest_row = get_dest_row (context, &path_down_mode);
7956
7957   if (dest_row == NULL)
7958     return;
7959
7960   if (gtk_selection_data_get_length (selection_data) >= 0)
7961     {
7962       if (path_down_mode)
7963         {
7964           gtk_tree_path_down (dest_row);
7965           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7966                                                      dest_row, selection_data))
7967             gtk_tree_path_up (dest_row);
7968         }
7969     }
7970
7971   if (gtk_selection_data_get_length (selection_data) >= 0)
7972     {
7973       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7974                                                  dest_row,
7975                                                  selection_data))
7976         accepted = TRUE;
7977     }
7978
7979   gtk_drag_finish (context,
7980                    accepted,
7981                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7982                    time);
7983
7984   if (gtk_tree_path_get_depth (dest_row) == 1
7985       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7986     {
7987       /* special special case drag to "0", scroll to first item */
7988       if (!tree_view->priv->scroll_to_path)
7989         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7990     }
7991
7992   gtk_tree_path_free (dest_row);
7993
7994   /* drop dest_row */
7995   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7996 }
7997
7998
7999
8000 /* GtkContainer Methods
8001  */
8002
8003
8004 static void
8005 gtk_tree_view_remove (GtkContainer *container,
8006                       GtkWidget    *widget)
8007 {
8008   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8009   GtkTreeViewChild *child = NULL;
8010   GList *tmp_list;
8011
8012   tmp_list = tree_view->priv->children;
8013   while (tmp_list)
8014     {
8015       child = tmp_list->data;
8016       if (child->widget == widget)
8017         {
8018           gtk_widget_unparent (widget);
8019
8020           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8021           g_list_free_1 (tmp_list);
8022           g_slice_free (GtkTreeViewChild, child);
8023           return;
8024         }
8025
8026       tmp_list = tmp_list->next;
8027     }
8028
8029   tmp_list = tree_view->priv->columns;
8030
8031   while (tmp_list)
8032     {
8033       GtkTreeViewColumn *column;
8034       GtkWidget         *button;
8035
8036       column = tmp_list->data;
8037       button = gtk_tree_view_column_get_button (column);
8038
8039       if (button == widget)
8040         {
8041           gtk_widget_unparent (widget);
8042           return;
8043         }
8044       tmp_list = tmp_list->next;
8045     }
8046 }
8047
8048 static void
8049 gtk_tree_view_forall (GtkContainer *container,
8050                       gboolean      include_internals,
8051                       GtkCallback   callback,
8052                       gpointer      callback_data)
8053 {
8054   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8055   GtkTreeViewChild *child = NULL;
8056   GtkTreeViewColumn *column;
8057   GtkWidget *button;
8058   GList *tmp_list;
8059
8060   tmp_list = tree_view->priv->children;
8061   while (tmp_list)
8062     {
8063       child = tmp_list->data;
8064       tmp_list = tmp_list->next;
8065
8066       (* callback) (child->widget, callback_data);
8067     }
8068   if (include_internals == FALSE)
8069     return;
8070
8071   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8072     {
8073       column = tmp_list->data;
8074       button = gtk_tree_view_column_get_button (column);
8075
8076       if (button)
8077         (* callback) (button, callback_data);
8078     }
8079 }
8080
8081 /* Returns TRUE is any of the columns contains a cell that can-focus.
8082  * If this is not the case, a column-spanning focus rectangle will be
8083  * drawn.
8084  */
8085 static gboolean
8086 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8087 {
8088   GList *list;
8089
8090   for (list = tree_view->priv->columns; list; list = list->next)
8091     {
8092       GtkTreeViewColumn *column = list->data;
8093
8094       if (!gtk_tree_view_column_get_visible (column))
8095         continue;
8096       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8097         return TRUE;
8098     }
8099
8100   return FALSE;
8101 }
8102
8103 static void
8104 column_sizing_notify (GObject    *object,
8105                       GParamSpec *pspec,
8106                       gpointer    data)
8107 {
8108   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8109
8110   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8111     /* disable fixed height mode */
8112     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8113 }
8114
8115 /**
8116  * gtk_tree_view_set_fixed_height_mode:
8117  * @tree_view: a #GtkTreeView
8118  * @enable: %TRUE to enable fixed height mode
8119  *
8120  * Enables or disables the fixed height mode of @tree_view.
8121  * Fixed height mode speeds up #GtkTreeView by assuming that all
8122  * rows have the same height.
8123  * Only enable this option if all rows are the same height and all
8124  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8125  *
8126  * Since: 2.6
8127  **/
8128 void
8129 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8130                                      gboolean     enable)
8131 {
8132   GList *l;
8133
8134   enable = enable != FALSE;
8135
8136   if (enable == tree_view->priv->fixed_height_mode)
8137     return;
8138
8139   if (!enable)
8140     {
8141       tree_view->priv->fixed_height_mode = 0;
8142       tree_view->priv->fixed_height = -1;
8143
8144       /* force a revalidation */
8145       install_presize_handler (tree_view);
8146     }
8147   else
8148     {
8149       /* make sure all columns are of type FIXED */
8150       for (l = tree_view->priv->columns; l; l = l->next)
8151         {
8152           GtkTreeViewColumn *c = l->data;
8153
8154           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8155         }
8156
8157       /* yes, we really have to do this is in a separate loop */
8158       for (l = tree_view->priv->columns; l; l = l->next)
8159         g_signal_connect (l->data, "notify::sizing",
8160                           G_CALLBACK (column_sizing_notify), tree_view);
8161
8162       tree_view->priv->fixed_height_mode = 1;
8163       tree_view->priv->fixed_height = -1;
8164
8165       if (tree_view->priv->tree)
8166         initialize_fixed_height_mode (tree_view);
8167     }
8168
8169   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8170 }
8171
8172 /**
8173  * gtk_tree_view_get_fixed_height_mode:
8174  * @tree_view: a #GtkTreeView
8175  *
8176  * Returns whether fixed height mode is turned on for @tree_view.
8177  *
8178  * Return value: %TRUE if @tree_view is in fixed height mode
8179  *
8180  * Since: 2.6
8181  **/
8182 gboolean
8183 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8184 {
8185   return tree_view->priv->fixed_height_mode;
8186 }
8187
8188 /* Returns TRUE if the focus is within the headers, after the focus operation is
8189  * done
8190  */
8191 static gboolean
8192 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8193                             GtkDirectionType  dir,
8194                             gboolean          clamp_column_visible)
8195 {
8196   GtkTreeViewColumn *column;
8197   GtkWidget *focus_child;
8198   GtkWidget *button;
8199   GList *last_column, *first_column;
8200   GList *tmp_list;
8201   gboolean rtl;
8202
8203   if (! tree_view->priv->headers_visible)
8204     return FALSE;
8205
8206   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8207
8208   first_column = tree_view->priv->columns;
8209   while (first_column)
8210     {
8211       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8212       button = gtk_tree_view_column_get_button (column);
8213
8214       if (gtk_widget_get_can_focus (button) &&
8215           gtk_tree_view_column_get_visible (column) &&
8216           (gtk_tree_view_column_get_clickable (column) ||
8217            gtk_tree_view_column_get_reorderable (column)))
8218         break;
8219       first_column = first_column->next;
8220     }
8221
8222   /* No headers are visible, or are focusable.  We can't focus in or out.
8223    */
8224   if (first_column == NULL)
8225     return FALSE;
8226
8227   last_column = g_list_last (tree_view->priv->columns);
8228   while (last_column)
8229     {
8230       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8231       button = gtk_tree_view_column_get_button (column);
8232
8233       if (gtk_widget_get_can_focus (button) &&
8234           gtk_tree_view_column_get_visible (column) &&
8235           (gtk_tree_view_column_get_clickable (column) ||
8236            gtk_tree_view_column_get_reorderable (column)))
8237         break;
8238       last_column = last_column->prev;
8239     }
8240
8241
8242   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8243
8244   switch (dir)
8245     {
8246     case GTK_DIR_TAB_BACKWARD:
8247     case GTK_DIR_TAB_FORWARD:
8248     case GTK_DIR_UP:
8249     case GTK_DIR_DOWN:
8250       if (focus_child == NULL)
8251         {
8252           if (tree_view->priv->focus_column != NULL)
8253             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8254           else
8255             button = NULL;
8256
8257           if (button && gtk_widget_get_can_focus (button))
8258             focus_child = button;
8259           else
8260             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8261
8262           gtk_widget_grab_focus (focus_child);
8263           break;
8264         }
8265       return FALSE;
8266
8267     case GTK_DIR_LEFT:
8268     case GTK_DIR_RIGHT:
8269       if (focus_child == NULL)
8270         {
8271           if (tree_view->priv->focus_column != NULL)
8272             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8273           else if (dir == GTK_DIR_LEFT)
8274             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8275           else
8276             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8277
8278           gtk_widget_grab_focus (focus_child);
8279           break;
8280         }
8281
8282       if (gtk_widget_child_focus (focus_child, dir))
8283         {
8284           /* The focus moves inside the button. */
8285           /* This is probably a great example of bad UI */
8286           break;
8287         }
8288
8289       /* We need to move the focus among the row of buttons. */
8290       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8291         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8292           break;
8293
8294       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8295           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8296         {
8297           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8298           break;
8299         }
8300
8301       while (tmp_list)
8302         {
8303           GtkTreeViewColumn *column;
8304           GtkWidget         *button;
8305
8306           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8307             tmp_list = tmp_list->next;
8308           else
8309             tmp_list = tmp_list->prev;
8310
8311           if (tmp_list == NULL)
8312             {
8313               g_warning ("Internal button not found");
8314               break;
8315             }
8316           column = tmp_list->data;
8317           button = gtk_tree_view_column_get_button (column);
8318           if (button &&
8319               gtk_tree_view_column_get_visible (column) &&
8320               gtk_widget_get_can_focus (button))
8321             {
8322               focus_child = button;
8323               gtk_widget_grab_focus (button);
8324               break;
8325             }
8326         }
8327       break;
8328     default:
8329       g_assert_not_reached ();
8330       break;
8331     }
8332
8333   /* if focus child is non-null, we assume it's been set to the current focus child
8334    */
8335   if (focus_child)
8336     {
8337       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8338         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8339           {
8340             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8341             break;
8342           }
8343
8344       if (clamp_column_visible)
8345         {
8346           gtk_tree_view_clamp_column_visible (tree_view,
8347                                               tree_view->priv->focus_column,
8348                                               FALSE);
8349         }
8350     }
8351
8352   return (focus_child != NULL);
8353 }
8354
8355 /* This function returns in 'path' the first focusable path, if the given path
8356  * is already focusable, it's the returned one.
8357  */
8358 static gboolean
8359 search_first_focusable_path (GtkTreeView  *tree_view,
8360                              GtkTreePath **path,
8361                              gboolean      search_forward,
8362                              GtkRBTree   **new_tree,
8363                              GtkRBNode   **new_node)
8364 {
8365   GtkRBTree *tree = NULL;
8366   GtkRBNode *node = NULL;
8367
8368   if (!path || !*path)
8369     return FALSE;
8370
8371   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8372
8373   if (!tree || !node)
8374     return FALSE;
8375
8376   while (node && row_is_separator (tree_view, NULL, *path))
8377     {
8378       if (search_forward)
8379         _gtk_rbtree_next_full (tree, node, &tree, &node);
8380       else
8381         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8382
8383       if (*path)
8384         gtk_tree_path_free (*path);
8385
8386       if (node)
8387         *path = _gtk_tree_view_find_path (tree_view, tree, node);
8388       else
8389         *path = NULL;
8390     }
8391
8392   if (new_tree)
8393     *new_tree = tree;
8394
8395   if (new_node)
8396     *new_node = node;
8397
8398   return (*path != NULL);
8399 }
8400
8401 static gint
8402 gtk_tree_view_focus (GtkWidget        *widget,
8403                      GtkDirectionType  direction)
8404 {
8405   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8406   GtkContainer *container = GTK_CONTAINER (widget);
8407   GtkWidget *focus_child;
8408
8409   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8410     return FALSE;
8411
8412   focus_child = gtk_container_get_focus_child (container);
8413
8414   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8415   /* Case 1.  Headers currently have focus. */
8416   if (focus_child)
8417     {
8418       switch (direction)
8419         {
8420         case GTK_DIR_LEFT:
8421         case GTK_DIR_RIGHT:
8422           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8423           return TRUE;
8424         case GTK_DIR_TAB_BACKWARD:
8425         case GTK_DIR_UP:
8426           return FALSE;
8427         case GTK_DIR_TAB_FORWARD:
8428         case GTK_DIR_DOWN:
8429           gtk_widget_grab_focus (widget);
8430           return TRUE;
8431         default:
8432           g_assert_not_reached ();
8433           return FALSE;
8434         }
8435     }
8436
8437   /* Case 2. We don't have focus at all. */
8438   if (!gtk_widget_has_focus (widget))
8439     {
8440       gtk_widget_grab_focus (widget);
8441       return TRUE;
8442     }
8443
8444   /* Case 3. We have focus already. */
8445   if (direction == GTK_DIR_TAB_BACKWARD)
8446     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8447   else if (direction == GTK_DIR_TAB_FORWARD)
8448     return FALSE;
8449
8450   /* Other directions caught by the keybindings */
8451   gtk_widget_grab_focus (widget);
8452   return TRUE;
8453 }
8454
8455 static void
8456 gtk_tree_view_grab_focus (GtkWidget *widget)
8457 {
8458   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8459
8460   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8461 }
8462
8463 static void
8464 gtk_tree_view_style_updated (GtkWidget *widget)
8465 {
8466   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8467   GList *list;
8468   GtkTreeViewColumn *column;
8469
8470   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8471
8472   if (gtk_widget_get_realized (widget))
8473     {
8474       gtk_tree_view_ensure_background (tree_view);
8475
8476       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8477       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8478     }
8479
8480   gtk_widget_style_get (widget,
8481                         "expander-size", &tree_view->priv->expander_size,
8482                         NULL);
8483   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8484
8485   for (list = tree_view->priv->columns; list; list = list->next)
8486     {
8487       column = list->data;
8488       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8489     }
8490
8491   tree_view->priv->fixed_height = -1;
8492   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8493
8494   gtk_widget_queue_resize (widget);
8495 }
8496
8497
8498 static void
8499 gtk_tree_view_set_focus_child (GtkContainer *container,
8500                                GtkWidget    *child)
8501 {
8502   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8503   GList *list;
8504
8505   for (list = tree_view->priv->columns; list; list = list->next)
8506     {
8507       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8508         {
8509           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8510           break;
8511         }
8512     }
8513
8514   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8515 }
8516
8517 static GtkWidgetPath *
8518 gtk_tree_view_get_path_for_child (GtkContainer *container,
8519                                   GtkWidget    *child)
8520 {
8521   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8522   GtkWidgetPath *path;
8523   gboolean rtl;
8524   GList *list;
8525   gint n_col = 0;
8526
8527   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8528   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8529
8530   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8531        list;
8532        list = (rtl ? list->prev : list->next))
8533     {
8534       GtkTreeViewColumn *column = list->data;
8535       GtkRegionFlags flags = 0;
8536
8537       if (!gtk_tree_view_column_get_visible (column))
8538         continue;
8539
8540       n_col++;
8541
8542       if (gtk_tree_view_column_get_widget (column) != child &&
8543           gtk_tree_view_column_get_button (column) != child)
8544         continue;
8545
8546       if ((n_col % 2) == 0)
8547         flags |= GTK_REGION_EVEN;
8548       else
8549         flags |= GTK_REGION_ODD;
8550
8551       if (n_col == 1)
8552         flags |= GTK_REGION_FIRST;
8553
8554       if ((rtl && !list->prev) ||
8555           (!rtl && !list->next))
8556         flags |= GTK_REGION_LAST;
8557
8558       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8559       break;
8560     }
8561
8562   gtk_widget_path_append_for_widget (path, child);
8563
8564   return path;
8565 }
8566
8567 static gboolean
8568 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8569                                 GtkMovementStep    step,
8570                                 gint               count)
8571 {
8572   GdkModifierType state;
8573
8574   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8575   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8576                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8577                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8578                         step == GTK_MOVEMENT_PAGES ||
8579                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8580
8581   if (tree_view->priv->tree == NULL)
8582     return FALSE;
8583   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8584     return FALSE;
8585
8586   gtk_tree_view_stop_editing (tree_view, FALSE);
8587   tree_view->priv->draw_keyfocus = TRUE;
8588   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8589
8590   if (gtk_get_current_event_state (&state))
8591     {
8592       GdkModifierType extend_mod_mask;
8593       GdkModifierType modify_mod_mask;
8594
8595       extend_mod_mask =
8596         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8597                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8598
8599       modify_mod_mask =
8600         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8601                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8602
8603       if ((state & modify_mod_mask) == modify_mod_mask)
8604         tree_view->priv->modify_selection_pressed = TRUE;
8605       if ((state & extend_mod_mask) == extend_mod_mask)
8606         tree_view->priv->extend_selection_pressed = TRUE;
8607     }
8608   /* else we assume not pressed */
8609
8610   switch (step)
8611     {
8612       /* currently we make no distinction.  When we go bi-di, we need to */
8613     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8614     case GTK_MOVEMENT_VISUAL_POSITIONS:
8615       gtk_tree_view_move_cursor_left_right (tree_view, count);
8616       break;
8617     case GTK_MOVEMENT_DISPLAY_LINES:
8618       gtk_tree_view_move_cursor_up_down (tree_view, count);
8619       break;
8620     case GTK_MOVEMENT_PAGES:
8621       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8622       break;
8623     case GTK_MOVEMENT_BUFFER_ENDS:
8624       gtk_tree_view_move_cursor_start_end (tree_view, count);
8625       break;
8626     default:
8627       g_assert_not_reached ();
8628     }
8629
8630   tree_view->priv->modify_selection_pressed = FALSE;
8631   tree_view->priv->extend_selection_pressed = FALSE;
8632
8633   return TRUE;
8634 }
8635
8636 static void
8637 gtk_tree_view_put (GtkTreeView *tree_view,
8638                    GtkWidget   *child_widget,
8639                    /* in bin_window coordinates */
8640                    gint         x,
8641                    gint         y,
8642                    gint         width,
8643                    gint         height)
8644 {
8645   GtkTreeViewChild *child;
8646
8647   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8648   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8649
8650   child = g_slice_new (GtkTreeViewChild);
8651
8652   child->widget = child_widget;
8653   child->x = x;
8654   child->y = y;
8655   child->width = width;
8656   child->height = height;
8657
8658   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8659
8660   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8661     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8662
8663   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8664 }
8665
8666 void
8667 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8668                                   GtkWidget   *widget,
8669                                   /* in tree coordinates */
8670                                   gint         x,
8671                                   gint         y,
8672                                   gint         width,
8673                                   gint         height)
8674 {
8675   GtkTreeViewChild *child = NULL;
8676   GList *list;
8677   GdkRectangle allocation;
8678
8679   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8680   g_return_if_fail (GTK_IS_WIDGET (widget));
8681
8682   for (list = tree_view->priv->children; list; list = list->next)
8683     {
8684       if (((GtkTreeViewChild *)list->data)->widget == widget)
8685         {
8686           child = list->data;
8687           break;
8688         }
8689     }
8690   if (child == NULL)
8691     return;
8692
8693   allocation.x = child->x = x;
8694   allocation.y = child->y = y;
8695   allocation.width = child->width = width;
8696   allocation.height = child->height = height;
8697
8698   if (gtk_widget_get_realized (widget))
8699     gtk_widget_size_allocate (widget, &allocation);
8700 }
8701
8702
8703 /* TreeModel Callbacks
8704  */
8705
8706 static void
8707 gtk_tree_view_row_changed (GtkTreeModel *model,
8708                            GtkTreePath  *path,
8709                            GtkTreeIter  *iter,
8710                            gpointer      data)
8711 {
8712   GtkTreeView *tree_view = (GtkTreeView *)data;
8713   GtkRBTree *tree;
8714   GtkRBNode *node;
8715   gboolean free_path = FALSE;
8716   GList *list;
8717   GtkTreePath *cursor_path;
8718
8719   g_return_if_fail (path != NULL || iter != NULL);
8720
8721   if (tree_view->priv->cursor != NULL)
8722     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8723   else
8724     cursor_path = NULL;
8725
8726   if (tree_view->priv->edited_column &&
8727       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8728     gtk_tree_view_stop_editing (tree_view, TRUE);
8729
8730   if (cursor_path != NULL)
8731     gtk_tree_path_free (cursor_path);
8732
8733   if (path == NULL)
8734     {
8735       path = gtk_tree_model_get_path (model, iter);
8736       free_path = TRUE;
8737     }
8738   else if (iter == NULL)
8739     gtk_tree_model_get_iter (model, iter, path);
8740
8741   if (_gtk_tree_view_find_node (tree_view,
8742                                 path,
8743                                 &tree,
8744                                 &node))
8745     /* We aren't actually showing the node */
8746     goto done;
8747
8748   if (tree == NULL)
8749     goto done;
8750
8751   if (tree_view->priv->fixed_height_mode
8752       && tree_view->priv->fixed_height >= 0)
8753     {
8754       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8755       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8756         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8757     }
8758   else
8759     {
8760       _gtk_rbtree_node_mark_invalid (tree, node);
8761       for (list = tree_view->priv->columns; list; list = list->next)
8762         {
8763           GtkTreeViewColumn *column;
8764
8765           column = list->data;
8766           if (!gtk_tree_view_column_get_visible (column))
8767             continue;
8768
8769           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8770             {
8771               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8772             }
8773         }
8774     }
8775
8776  done:
8777   if (!tree_view->priv->fixed_height_mode &&
8778       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8779     install_presize_handler (tree_view);
8780   if (free_path)
8781     gtk_tree_path_free (path);
8782 }
8783
8784 static void
8785 gtk_tree_view_row_inserted (GtkTreeModel *model,
8786                             GtkTreePath  *path,
8787                             GtkTreeIter  *iter,
8788                             gpointer      data)
8789 {
8790   GtkTreeView *tree_view = (GtkTreeView *) data;
8791   gint *indices;
8792   GtkRBTree *tree;
8793   GtkRBNode *tmpnode = NULL;
8794   gint depth;
8795   gint i = 0;
8796   gint height;
8797   gboolean free_path = FALSE;
8798   gboolean node_visible = TRUE;
8799
8800   g_return_if_fail (path != NULL || iter != NULL);
8801
8802   if (tree_view->priv->fixed_height_mode
8803       && tree_view->priv->fixed_height >= 0)
8804     height = tree_view->priv->fixed_height;
8805   else
8806     height = 0;
8807
8808   if (path == NULL)
8809     {
8810       path = gtk_tree_model_get_path (model, iter);
8811       free_path = TRUE;
8812     }
8813   else if (iter == NULL)
8814     gtk_tree_model_get_iter (model, iter, path);
8815
8816   if (tree_view->priv->tree == NULL)
8817     tree_view->priv->tree = _gtk_rbtree_new ();
8818
8819   tree = tree_view->priv->tree;
8820
8821   /* Update all row-references */
8822   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8823   depth = gtk_tree_path_get_depth (path);
8824   indices = gtk_tree_path_get_indices (path);
8825
8826   /* First, find the parent tree */
8827   while (i < depth - 1)
8828     {
8829       if (tree == NULL)
8830         {
8831           /* We aren't showing the node */
8832           node_visible = FALSE;
8833           goto done;
8834         }
8835
8836       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8837       if (tmpnode == NULL)
8838         {
8839           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8840                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8841                      "before the parent was inserted.");
8842           goto done;
8843         }
8844       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8845         {
8846           /* FIXME enforce correct behavior on model, probably */
8847           /* In theory, the model should have emitted has_child_toggled here.  We
8848            * try to catch it anyway, just to be safe, in case the model hasn't.
8849            */
8850           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8851                                                            tree,
8852                                                            tmpnode);
8853           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8854           gtk_tree_path_free (tmppath);
8855           goto done;
8856         }
8857
8858       tree = tmpnode->children;
8859       i++;
8860     }
8861
8862   if (tree == NULL)
8863     {
8864       node_visible = FALSE;
8865       goto done;
8866     }
8867
8868   /* ref the node */
8869   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8870   if (indices[depth - 1] == 0)
8871     {
8872       tmpnode = _gtk_rbtree_find_count (tree, 1);
8873       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8874     }
8875   else
8876     {
8877       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8878       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8879     }
8880
8881  done:
8882   if (height > 0)
8883     {
8884       if (tree)
8885         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8886
8887       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8888         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8889       else
8890         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8891     }
8892   else
8893     install_presize_handler (tree_view);
8894   if (free_path)
8895     gtk_tree_path_free (path);
8896 }
8897
8898 static void
8899 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8900                                      GtkTreePath  *path,
8901                                      GtkTreeIter  *iter,
8902                                      gpointer      data)
8903 {
8904   GtkTreeView *tree_view = (GtkTreeView *)data;
8905   GtkTreeIter real_iter;
8906   gboolean has_child;
8907   GtkRBTree *tree;
8908   GtkRBNode *node;
8909   gboolean free_path = FALSE;
8910
8911   g_return_if_fail (path != NULL || iter != NULL);
8912
8913   if (iter)
8914     real_iter = *iter;
8915
8916   if (path == NULL)
8917     {
8918       path = gtk_tree_model_get_path (model, iter);
8919       free_path = TRUE;
8920     }
8921   else if (iter == NULL)
8922     gtk_tree_model_get_iter (model, &real_iter, path);
8923
8924   if (_gtk_tree_view_find_node (tree_view,
8925                                 path,
8926                                 &tree,
8927                                 &node))
8928     /* We aren't actually showing the node */
8929     goto done;
8930
8931   if (tree == NULL)
8932     goto done;
8933
8934   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8935   /* Sanity check.
8936    */
8937   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8938     goto done;
8939
8940   if (has_child)
8941     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8942   else
8943     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8944
8945   if (has_child && tree_view->priv->is_list)
8946     {
8947       tree_view->priv->is_list = FALSE;
8948       if (tree_view->priv->show_expanders)
8949         {
8950           GList *list;
8951
8952           for (list = tree_view->priv->columns; list; list = list->next)
8953             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8954               {
8955                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8956                 break;
8957               }
8958         }
8959       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8960     }
8961   else
8962     {
8963       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8964     }
8965
8966  done:
8967   if (free_path)
8968     gtk_tree_path_free (path);
8969 }
8970
8971 static void
8972 count_children_helper (GtkRBTree *tree,
8973                        GtkRBNode *node,
8974                        gpointer   data)
8975 {
8976   if (node->children)
8977     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8978   (*((gint *)data))++;
8979 }
8980
8981 static void
8982 check_selection_helper (GtkRBTree *tree,
8983                         GtkRBNode *node,
8984                         gpointer   data)
8985 {
8986   gint *value = (gint *)data;
8987
8988   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8989
8990   if (node->children && !*value)
8991     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8992 }
8993
8994 static void
8995 gtk_tree_view_row_deleted (GtkTreeModel *model,
8996                            GtkTreePath  *path,
8997                            gpointer      data)
8998 {
8999   GtkTreeView *tree_view = (GtkTreeView *)data;
9000   GtkRBTree *tree;
9001   GtkRBNode *node;
9002   GList *list;
9003   gint selection_changed = FALSE;
9004   GtkStyleContext *context;
9005
9006   g_return_if_fail (path != NULL);
9007
9008   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9009
9010   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9011     return;
9012
9013   if (tree == NULL)
9014     return;
9015
9016   /* check if the selection has been changed */
9017   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9018                         check_selection_helper, &selection_changed);
9019
9020   for (list = tree_view->priv->columns; list; list = list->next)
9021     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9022         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9023       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9024
9025   /* Ensure we don't have a dangling pointer to a dead node */
9026   ensure_unprelighted (tree_view);
9027
9028   /* Cancel editting if we've started */
9029   gtk_tree_view_stop_editing (tree_view, TRUE);
9030
9031   if (tree_view->priv->destroy_count_func)
9032     {
9033       gint child_count = 0;
9034       if (node->children)
9035         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9036       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9037     }
9038
9039   if (tree->root->count == 1)
9040     {
9041       if (tree_view->priv->tree == tree)
9042         tree_view->priv->tree = NULL;
9043
9044       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9045       _gtk_rbtree_remove (tree);
9046     }
9047   else
9048     {
9049       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9050       _gtk_rbtree_remove_node (tree, node);
9051     }
9052
9053   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9054     {
9055       gtk_tree_row_reference_free (tree_view->priv->top_row);
9056       tree_view->priv->top_row = NULL;
9057     }
9058
9059   /* Cancel any ongoing animation happening within the row */
9060   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9061   gtk_style_context_cancel_animations (context, node);
9062
9063   install_scroll_sync_handler (tree_view);
9064
9065   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9066
9067   if (selection_changed)
9068     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9069 }
9070
9071 static void
9072 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9073                               GtkTreePath  *parent,
9074                               GtkTreeIter  *iter,
9075                               gint         *new_order,
9076                               gpointer      data)
9077 {
9078   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9079   GtkRBTree *tree;
9080   GtkRBNode *node;
9081   gint len;
9082
9083   len = gtk_tree_model_iter_n_children (model, iter);
9084
9085   if (len < 2)
9086     return;
9087
9088   gtk_tree_row_reference_reordered (G_OBJECT (data),
9089                                     parent,
9090                                     iter,
9091                                     new_order);
9092
9093   if (_gtk_tree_view_find_node (tree_view,
9094                                 parent,
9095                                 &tree,
9096                                 &node))
9097     return;
9098
9099   /* We need to special case the parent path */
9100   if (tree == NULL)
9101     tree = tree_view->priv->tree;
9102   else
9103     tree = node->children;
9104
9105   if (tree == NULL)
9106     return;
9107
9108   if (tree_view->priv->edited_column)
9109     gtk_tree_view_stop_editing (tree_view, TRUE);
9110
9111   /* we need to be unprelighted */
9112   ensure_unprelighted (tree_view);
9113
9114   _gtk_rbtree_reorder (tree, new_order, len);
9115
9116   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9117
9118   gtk_tree_view_dy_to_top_row (tree_view);
9119 }
9120
9121
9122 /* Internal tree functions
9123  */
9124
9125
9126 static void
9127 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9128                                      GtkRBTree         *tree,
9129                                      GtkTreeViewColumn *column,
9130                                      gint              *x1,
9131                                      gint              *x2)
9132 {
9133   GtkTreeViewColumn *tmp_column = NULL;
9134   gint total_width;
9135   GList *list;
9136   gboolean rtl;
9137
9138   if (x1)
9139     *x1 = 0;
9140
9141   if (x2)
9142     *x2 = 0;
9143
9144   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9145
9146   total_width = 0;
9147   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9148        list;
9149        list = (rtl ? list->prev : list->next))
9150     {
9151       tmp_column = list->data;
9152
9153       if (tmp_column == column)
9154         break;
9155
9156       if (gtk_tree_view_column_get_visible (tmp_column))
9157         total_width += gtk_tree_view_column_get_width (tmp_column);
9158     }
9159
9160   if (tmp_column != column)
9161     {
9162       g_warning (G_STRLOC": passed-in column isn't in the tree");
9163       return;
9164     }
9165
9166   if (x1)
9167     *x1 = total_width;
9168
9169   if (x2)
9170     {
9171       if (gtk_tree_view_column_get_visible (column))
9172         *x2 = total_width + gtk_tree_view_column_get_width (column);
9173       else
9174         *x2 = total_width; /* width of 0 */
9175     }
9176 }
9177
9178 static void
9179 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9180                                 GtkRBTree   *tree,
9181                                 gint        *x1,
9182                                 gint        *x2)
9183 {
9184   gint x_offset = 0;
9185   GList *list;
9186   GtkTreeViewColumn *tmp_column = NULL;
9187   gint total_width;
9188   gboolean indent_expanders;
9189   gboolean rtl;
9190
9191   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9192
9193   total_width = 0;
9194   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9195        list;
9196        list = (rtl ? list->prev : list->next))
9197     {
9198       tmp_column = list->data;
9199
9200       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9201         {
9202           if (rtl)
9203             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9204           else
9205             x_offset = total_width;
9206           break;
9207         }
9208
9209       if (gtk_tree_view_column_get_visible (tmp_column))
9210         total_width += gtk_tree_view_column_get_width (tmp_column);
9211     }
9212
9213   gtk_widget_style_get (GTK_WIDGET (tree_view),
9214                         "indent-expanders", &indent_expanders,
9215                         NULL);
9216
9217   if (indent_expanders)
9218     {
9219       if (rtl)
9220         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9221       else
9222         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9223     }
9224
9225   *x1 = x_offset;
9226
9227   if (tmp_column &&
9228       gtk_tree_view_column_get_visible (tmp_column))
9229     /* +1 because x2 isn't included in the range. */
9230     *x2 = *x1 + tree_view->priv->expander_size + 1;
9231   else
9232     *x2 = *x1;
9233 }
9234
9235 static void
9236 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9237                           GtkRBTree   *tree,
9238                           GtkTreeIter *iter,
9239                           gint         depth,
9240                           gboolean     recurse)
9241 {
9242   GtkRBNode *temp = NULL;
9243   GtkTreePath *path = NULL;
9244
9245   do
9246     {
9247       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9248       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9249
9250       if (tree_view->priv->fixed_height > 0)
9251         {
9252           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9253             {
9254               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9255               _gtk_rbtree_node_mark_valid (tree, temp);
9256             }
9257         }
9258
9259       if (tree_view->priv->is_list)
9260         continue;
9261
9262       if (recurse)
9263         {
9264           GtkTreeIter child;
9265
9266           if (!path)
9267             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9268           else
9269             gtk_tree_path_next (path);
9270
9271           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9272             {
9273               gboolean expand;
9274
9275               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9276
9277               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9278                   && !expand)
9279                 {
9280                   temp->children = _gtk_rbtree_new ();
9281                   temp->children->parent_tree = tree;
9282                   temp->children->parent_node = temp;
9283                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9284                 }
9285             }
9286         }
9287
9288       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9289         {
9290           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9291             temp->flags ^= GTK_RBNODE_IS_PARENT;
9292         }
9293     }
9294   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9295
9296   if (path)
9297     gtk_tree_path_free (path);
9298 }
9299
9300 /* Make sure the node is visible vertically */
9301 static void
9302 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9303                                   GtkRBTree   *tree,
9304                                   GtkRBNode   *node)
9305 {
9306   gint node_dy, height;
9307   GtkTreePath *path = NULL;
9308
9309   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9310     return;
9311
9312   /* just return if the node is visible, avoiding a costly expose */
9313   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9314   height = gtk_tree_view_get_row_height (tree_view, node);
9315   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9316       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9317       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9318                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9319     return;
9320
9321   path = _gtk_tree_view_find_path (tree_view, tree, node);
9322   if (path)
9323     {
9324       /* We process updates because we want to clear old selected items when we scroll.
9325        * if this is removed, we get a "selection streak" at the bottom. */
9326       gtk_tree_view_bin_process_updates (tree_view);
9327
9328       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9329       gtk_tree_path_free (path);
9330     }
9331 }
9332
9333 static void
9334 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9335                                     GtkTreeViewColumn *column,
9336                                     gboolean           focus_to_cell)
9337 {
9338   GtkAllocation allocation;
9339   gint x, width;
9340
9341   if (column == NULL)
9342     return;
9343
9344   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9345   x = allocation.x;
9346   width = allocation.width;
9347
9348   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9349     {
9350       /* The column is larger than the horizontal page size.  If the
9351        * column has cells which can be focussed individually, then we make
9352        * sure the cell which gets focus is fully visible (if even the
9353        * focus cell is bigger than the page size, we make sure the
9354        * left-hand side of the cell is visible).
9355        *
9356        * If the column does not have an activatable cell, we
9357        * make sure the left-hand side of the column is visible.
9358        */
9359
9360       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9361         {
9362           GtkCellArea *cell_area;
9363           GtkCellRenderer *focus_cell;
9364
9365           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9366           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9367
9368           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9369                                                       &x, &width))
9370             {
9371               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9372                 {
9373                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9374                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9375                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9376                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9377                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9378                 }
9379             }
9380         }
9381
9382       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9383     }
9384   else
9385     {
9386       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9387           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9388                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9389       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9390         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9391   }
9392 }
9393
9394 /* This function could be more efficient.  I'll optimize it if profiling seems
9395  * to imply that it is important */
9396 GtkTreePath *
9397 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9398                           GtkRBTree   *tree,
9399                           GtkRBNode   *node)
9400 {
9401   GtkTreePath *path;
9402   GtkRBTree *tmp_tree;
9403   GtkRBNode *tmp_node, *last;
9404   gint count;
9405
9406   path = gtk_tree_path_new ();
9407
9408   g_return_val_if_fail (node != NULL, path);
9409   g_return_val_if_fail (node != tree->nil, path);
9410
9411   count = 1 + node->left->count;
9412
9413   last = node;
9414   tmp_node = node->parent;
9415   tmp_tree = tree;
9416   while (tmp_tree)
9417     {
9418       while (tmp_node != tmp_tree->nil)
9419         {
9420           if (tmp_node->right == last)
9421             count += 1 + tmp_node->left->count;
9422           last = tmp_node;
9423           tmp_node = tmp_node->parent;
9424         }
9425       gtk_tree_path_prepend_index (path, count - 1);
9426       last = tmp_tree->parent_node;
9427       tmp_tree = tmp_tree->parent_tree;
9428       if (last)
9429         {
9430           count = 1 + last->left->count;
9431           tmp_node = last->parent;
9432         }
9433     }
9434   return path;
9435 }
9436
9437 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9438  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9439  * both set to NULL.
9440  */
9441 gboolean
9442 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9443                           GtkTreePath  *path,
9444                           GtkRBTree   **tree,
9445                           GtkRBNode   **node)
9446 {
9447   GtkRBNode *tmpnode = NULL;
9448   GtkRBTree *tmptree = tree_view->priv->tree;
9449   gint *indices = gtk_tree_path_get_indices (path);
9450   gint depth = gtk_tree_path_get_depth (path);
9451   gint i = 0;
9452
9453   *node = NULL;
9454   *tree = NULL;
9455
9456   if (depth == 0 || tmptree == NULL)
9457     return FALSE;
9458   do
9459     {
9460       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9461       ++i;
9462       if (tmpnode == NULL)
9463         {
9464           *tree = NULL;
9465           *node = NULL;
9466           return FALSE;
9467         }
9468       if (i >= depth)
9469         {
9470           *tree = tmptree;
9471           *node = tmpnode;
9472           return FALSE;
9473         }
9474       *tree = tmptree;
9475       *node = tmpnode;
9476       tmptree = tmpnode->children;
9477       if (tmptree == NULL)
9478         return TRUE;
9479     }
9480   while (1);
9481 }
9482
9483 static gboolean
9484 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9485                                   GtkTreeViewColumn *column)
9486 {
9487   GList *list;
9488
9489   if (tree_view->priv->is_list)
9490     return FALSE;
9491
9492   if (tree_view->priv->expander_column != NULL)
9493     {
9494       if (tree_view->priv->expander_column == column)
9495         return TRUE;
9496       return FALSE;
9497     }
9498   else
9499     {
9500       for (list = tree_view->priv->columns;
9501            list;
9502            list = list->next)
9503         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9504           break;
9505       if (list && list->data == column)
9506         return TRUE;
9507     }
9508   return FALSE;
9509 }
9510
9511 static inline gboolean
9512 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9513 {
9514   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9515     return TRUE;
9516   /* else */
9517   return FALSE;
9518 }
9519
9520 static void
9521 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9522                                 guint           keyval,
9523                                 guint           modmask,
9524                                 gboolean        add_shifted_binding,
9525                                 GtkMovementStep step,
9526                                 gint            count)
9527 {
9528
9529   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9530                                 "move-cursor", 2,
9531                                 G_TYPE_ENUM, step,
9532                                 G_TYPE_INT, count);
9533
9534   if (add_shifted_binding)
9535     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9536                                   "move-cursor", 2,
9537                                   G_TYPE_ENUM, step,
9538                                   G_TYPE_INT, count);
9539
9540   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9541    return;
9542
9543   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9544                                 "move-cursor", 2,
9545                                 G_TYPE_ENUM, step,
9546                                 G_TYPE_INT, count);
9547
9548   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9549                                 "move-cursor", 2,
9550                                 G_TYPE_ENUM, step,
9551                                 G_TYPE_INT, count);
9552 }
9553
9554 static gint
9555 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9556                                  GtkTreeIter  *iter,
9557                                  GtkRBTree    *tree,
9558                                  GtkRBNode    *node)
9559 {
9560   gint retval = FALSE;
9561   do
9562     {
9563       g_return_val_if_fail (node != NULL, FALSE);
9564
9565       if (node->children)
9566         {
9567           GtkTreeIter child;
9568           GtkRBTree *new_tree;
9569           GtkRBNode *new_node;
9570
9571           new_tree = node->children;
9572           new_node = new_tree->root;
9573
9574           while (new_node && new_node->left != new_tree->nil)
9575             new_node = new_node->left;
9576
9577           if (!gtk_tree_model_iter_children (model, &child, iter))
9578             return FALSE;
9579
9580           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9581         }
9582
9583       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9584         retval = TRUE;
9585       gtk_tree_model_unref_node (model, iter);
9586       node = _gtk_rbtree_next (tree, node);
9587     }
9588   while (gtk_tree_model_iter_next (model, iter));
9589
9590   return retval;
9591 }
9592
9593 static gint
9594 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9595                                               GtkRBTree   *tree)
9596 {
9597   GtkTreeIter iter;
9598   GtkTreePath *path;
9599   GtkRBNode *node;
9600   gint retval;
9601
9602   if (!tree)
9603     return FALSE;
9604
9605   node = tree->root;
9606   while (node && node->left != tree->nil)
9607     node = node->left;
9608
9609   g_return_val_if_fail (node != NULL, FALSE);
9610   path = _gtk_tree_view_find_path (tree_view, tree, node);
9611   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9612                            &iter, path);
9613   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9614   gtk_tree_path_free (path);
9615
9616   return retval;
9617 }
9618
9619 static void
9620 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9621                                     GtkTreeViewColumn *column)
9622 {
9623   GtkTreeViewColumn *left_column;
9624   GtkTreeViewColumn *cur_column = NULL;
9625   GtkTreeViewColumnReorder *reorder;
9626   gboolean rtl;
9627   GList *tmp_list;
9628   gint left;
9629
9630   /* We want to precalculate the motion list such that we know what column slots
9631    * are available.
9632    */
9633   left_column = NULL;
9634   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9635
9636   /* First, identify all possible drop spots */
9637   if (rtl)
9638     tmp_list = g_list_last (tree_view->priv->columns);
9639   else
9640     tmp_list = g_list_first (tree_view->priv->columns);
9641
9642   while (tmp_list)
9643     {
9644       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9645       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9646
9647       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9648         continue;
9649
9650       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9651       if (left_column != column && cur_column != column &&
9652           tree_view->priv->column_drop_func &&
9653           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9654         {
9655           left_column = cur_column;
9656           continue;
9657         }
9658       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9659       reorder->left_column = left_column;
9660       left_column = reorder->right_column = cur_column;
9661
9662       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9663     }
9664
9665   /* Add the last one */
9666   if (tree_view->priv->column_drop_func == NULL ||
9667       ((left_column != column) &&
9668        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9669     {
9670       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9671       reorder->left_column = left_column;
9672       reorder->right_column = NULL;
9673       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9674     }
9675
9676   /* We quickly check to see if it even makes sense to reorder columns. */
9677   /* If there is nothing that can be moved, then we return */
9678
9679   if (tree_view->priv->column_drag_info == NULL)
9680     return;
9681
9682   /* We know there are always 2 slots possbile, as you can always return column. */
9683   /* If that's all there is, return */
9684   if (tree_view->priv->column_drag_info->next == NULL ||
9685       (tree_view->priv->column_drag_info->next->next == NULL &&
9686        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9687        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9688     {
9689       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9690         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9691       g_list_free (tree_view->priv->column_drag_info);
9692       tree_view->priv->column_drag_info = NULL;
9693       return;
9694     }
9695   /* We fill in the ranges for the columns, now that we've isolated them */
9696   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9697
9698   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9699     {
9700       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9701
9702       reorder->left_align = left;
9703       if (tmp_list->next != NULL)
9704         {
9705           GtkAllocation right_allocation, left_allocation;
9706           GtkWidget    *left_button, *right_button;
9707
9708           g_assert (tmp_list->next->data);
9709
9710           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9711           left_button  = gtk_tree_view_column_get_button
9712             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9713
9714           gtk_widget_get_allocation (right_button, &right_allocation);
9715           gtk_widget_get_allocation (left_button, &left_allocation);
9716           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9717         }
9718       else
9719         {
9720           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9721                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9722         }
9723     }
9724 }
9725
9726 void
9727 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9728                                   GtkTreeViewColumn *column,
9729                                   GdkDevice         *device)
9730 {
9731   GdkEvent *send_event;
9732   GtkAllocation allocation;
9733   GtkAllocation button_allocation;
9734   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9735   GtkWidget *button;
9736   GdkDevice *pointer, *keyboard;
9737
9738   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9739   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9740
9741   gtk_tree_view_set_column_drag_info (tree_view, column);
9742
9743   if (tree_view->priv->column_drag_info == NULL)
9744     return;
9745
9746   button = gtk_tree_view_column_get_button (column);
9747
9748   if (tree_view->priv->drag_window == NULL)
9749     {
9750       GdkWindowAttr attributes;
9751       guint attributes_mask;
9752
9753       gtk_widget_get_allocation (button, &button_allocation);
9754
9755       attributes.window_type = GDK_WINDOW_CHILD;
9756       attributes.wclass = GDK_INPUT_OUTPUT;
9757       attributes.x = button_allocation.x;
9758       attributes.y = 0;
9759       attributes.width = button_allocation.width;
9760       attributes.height = button_allocation.height;
9761       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9762       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9763       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9764
9765       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9766                                                      &attributes,
9767                                                      attributes_mask);
9768       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9769     }
9770
9771   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9772     {
9773       keyboard = device;
9774       pointer = gdk_device_get_associated_device (device);
9775     }
9776   else
9777     {
9778       pointer = device;
9779       keyboard = gdk_device_get_associated_device (device);
9780     }
9781
9782   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9783   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9784
9785   gtk_grab_remove (button);
9786
9787   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9788   send_event->crossing.send_event = TRUE;
9789   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9790   send_event->crossing.subwindow = NULL;
9791   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9792   send_event->crossing.time = GDK_CURRENT_TIME;
9793   gdk_event_set_device (send_event, device);
9794
9795   gtk_propagate_event (button, send_event);
9796   gdk_event_free (send_event);
9797
9798   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9799   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9800   send_event->button.send_event = TRUE;
9801   send_event->button.time = GDK_CURRENT_TIME;
9802   send_event->button.x = -1;
9803   send_event->button.y = -1;
9804   send_event->button.axes = NULL;
9805   send_event->button.state = 0;
9806   send_event->button.button = 1;
9807   send_event->button.x_root = 0;
9808   send_event->button.y_root = 0;
9809   gdk_event_set_device (send_event, device);
9810
9811   gtk_propagate_event (button, send_event);
9812   gdk_event_free (send_event);
9813
9814   /* Kids, don't try this at home */
9815   g_object_ref (button);
9816   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9817   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9818   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9819   g_object_unref (button);
9820
9821   gtk_widget_get_allocation (button, &button_allocation);
9822   tree_view->priv->drag_column_x = button_allocation.x;
9823   allocation = button_allocation;
9824   allocation.x = 0;
9825   gtk_widget_size_allocate (button, &allocation);
9826   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9827
9828   tree_view->priv->drag_column = column;
9829   gdk_window_show (tree_view->priv->drag_window);
9830
9831   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9832   while (gtk_events_pending ())
9833     gtk_main_iteration ();
9834
9835   tree_view->priv->in_column_drag = TRUE;
9836
9837   gdk_device_grab (pointer,
9838                    tree_view->priv->drag_window,
9839                    GDK_OWNERSHIP_NONE,
9840                    FALSE,
9841                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9842                    NULL,
9843                    GDK_CURRENT_TIME);
9844   gdk_device_grab (keyboard,
9845                    tree_view->priv->drag_window,
9846                    GDK_OWNERSHIP_NONE,
9847                    FALSE,
9848                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9849                    NULL,
9850                    GDK_CURRENT_TIME);
9851 }
9852
9853 static void
9854 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9855                                 GtkRBTree          *tree,
9856                                 GtkRBNode          *node)
9857 {
9858   GtkAllocation allocation;
9859   GdkRectangle rect;
9860
9861   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9862     return;
9863
9864   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9865   rect.x = 0;
9866   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9867
9868   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9869   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9870
9871   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9872 }
9873
9874 void
9875 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9876                                 GtkRBTree          *tree,
9877                                 GtkRBNode          *node,
9878                                 const GdkRectangle *clip_rect)
9879 {
9880   GtkAllocation allocation;
9881   GdkRectangle rect;
9882
9883   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9884     return;
9885
9886   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9887   rect.x = 0;
9888   rect.width = MAX (tree_view->priv->width, allocation.width);
9889
9890   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9891   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9892
9893   if (clip_rect)
9894     {
9895       GdkRectangle new_rect;
9896
9897       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9898
9899       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9900     }
9901   else
9902     {
9903       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9904     }
9905 }
9906
9907 static inline gint
9908 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9909 {
9910   if (tree_view->priv->headers_visible)
9911     return tree_view->priv->header_height;
9912   /* else */
9913   return 0;
9914 }
9915
9916 gint
9917 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9918 {
9919   return tree_view->priv->header_height;
9920 }
9921
9922 void
9923 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9924                                        GtkTreeViewRowSeparatorFunc *func,
9925                                        gpointer                    *data)
9926 {
9927   *func = tree_view->priv->row_separator_func;
9928   *data = tree_view->priv->row_separator_data;
9929 }
9930
9931 GtkTreePath *
9932 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9933 {
9934   if (tree_view->priv->anchor)
9935     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9936
9937   return NULL;
9938 }
9939
9940 void
9941 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9942                                 GtkTreePath *anchor_path)
9943 {
9944   if (tree_view->priv->anchor)
9945     {
9946       gtk_tree_row_reference_free (tree_view->priv->anchor);
9947       tree_view->priv->anchor = NULL;
9948     }
9949
9950   if (anchor_path && tree_view->priv->model)
9951     tree_view->priv->anchor =
9952       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9953                                         tree_view->priv->model, anchor_path);
9954 }
9955
9956 GtkRBTree *
9957 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9958 {
9959   return tree_view->priv->tree;
9960 }
9961
9962 GdkWindow *
9963 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
9964 {
9965   return tree_view->priv->header_window;
9966 }
9967
9968 void
9969 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
9970                                  GtkTreeViewColumn *column)
9971 {
9972   tree_view->priv->focus_column = column;
9973 }
9974
9975
9976 static void
9977 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9978                                GtkTreePath        *path,
9979                                const GdkRectangle *clip_rect)
9980 {
9981   GtkRBTree *tree = NULL;
9982   GtkRBNode *node = NULL;
9983
9984   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9985
9986   if (tree)
9987     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9988 }
9989
9990 /* x and y are the mouse position
9991  */
9992 static void
9993 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9994                           cairo_t     *cr,
9995                           GtkRBTree   *tree,
9996                           GtkRBNode   *node)
9997 {
9998   GdkRectangle area;
9999   GtkStateFlags state = 0;
10000   GtkStyleContext *context;
10001   GtkWidget *widget;
10002   gint x_offset = 0;
10003   gint x2;
10004   gint vertical_separator;
10005   gint expander_size;
10006   GtkCellRendererState flags;
10007
10008   widget = GTK_WIDGET (tree_view);
10009   context = gtk_widget_get_style_context (widget);
10010
10011   gtk_widget_style_get (widget,
10012                         "vertical-separator", &vertical_separator,
10013                         NULL);
10014   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10015
10016   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10017     return;
10018
10019   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10020
10021   area.x = x_offset;
10022   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10023                                                  vertical_separator);
10024   area.width = expander_size;
10025   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10026                                                     vertical_separator);
10027
10028   if (!gtk_widget_get_sensitive (widget))
10029     state |= GTK_STATE_FLAG_INSENSITIVE;
10030   else
10031     {
10032       flags = 0;
10033
10034       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10035         flags |= GTK_CELL_RENDERER_SELECTED;
10036
10037       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10038
10039       if (node == tree_view->priv->prelight_node &&
10040           tree_view->priv->arrow_prelit)
10041         state |= GTK_STATE_FLAG_PRELIGHT;
10042     }
10043
10044   if (node->children != NULL)
10045     state |= GTK_STATE_FLAG_ACTIVE;
10046
10047   gtk_style_context_save (context);
10048
10049   gtk_style_context_set_state (context, state);
10050   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10051
10052   gtk_style_context_push_animatable_region (context, node);
10053
10054   gtk_render_expander (context, cr,
10055                        area.x, area.y,
10056                        area.width, area.height);
10057
10058   gtk_style_context_pop_animatable_region (context);
10059   gtk_style_context_restore (context);
10060 }
10061
10062 static void
10063 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10064
10065 {
10066   GtkTreePath *cursor_path;
10067
10068   if ((tree_view->priv->tree == NULL) ||
10069       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10070     return;
10071
10072   cursor_path = NULL;
10073   if (tree_view->priv->cursor)
10074     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10075
10076   if (cursor_path == NULL)
10077     {
10078       /* Consult the selection before defaulting to the
10079        * first focusable element
10080        */
10081       GList *selected_rows;
10082       GtkTreeModel *model;
10083       GtkTreeSelection *selection;
10084
10085       selection = gtk_tree_view_get_selection (tree_view);
10086       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10087
10088       if (selected_rows)
10089         {
10090           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10091           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10092           g_list_free (selected_rows);
10093         }
10094       else
10095         {
10096           cursor_path = gtk_tree_path_new_first ();
10097           search_first_focusable_path (tree_view, &cursor_path,
10098                                        TRUE, NULL, NULL);
10099         }
10100
10101       gtk_tree_row_reference_free (tree_view->priv->cursor);
10102       tree_view->priv->cursor = NULL;
10103
10104       if (cursor_path)
10105         {
10106           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10107             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
10108           else
10109             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10110         }
10111     }
10112
10113   if (cursor_path)
10114     {
10115       tree_view->priv->draw_keyfocus = TRUE;
10116
10117       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10118       gtk_tree_path_free (cursor_path);
10119
10120       if (tree_view->priv->focus_column == NULL)
10121         {
10122           GList *list;
10123           for (list = tree_view->priv->columns; list; list = list->next)
10124             {
10125               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10126                 {
10127                   GtkCellArea *cell_area;
10128
10129                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10130
10131                   /* This happens when the treeview initially grabs focus and there
10132                    * is no column in focus, here we explicitly focus into the first cell */
10133                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10134                   if (!gtk_cell_area_get_focus_cell (cell_area))
10135                     {
10136                       gboolean rtl;
10137
10138                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10139                       gtk_cell_area_focus (cell_area,
10140                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10141                     }
10142
10143                   break;
10144                 }
10145             }
10146         }
10147     }
10148 }
10149
10150 static void
10151 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10152                                    gint         count)
10153 {
10154   gint selection_count;
10155   GtkRBTree *cursor_tree = NULL;
10156   GtkRBNode *cursor_node = NULL;
10157   GtkRBTree *new_cursor_tree = NULL;
10158   GtkRBNode *new_cursor_node = NULL;
10159   GtkTreePath *cursor_path = NULL;
10160   gboolean grab_focus = TRUE;
10161   gboolean selectable;
10162   GtkDirectionType direction;
10163   GtkCellArea *cell_area = NULL;
10164   GtkCellRenderer *last_focus_cell = NULL;
10165   GtkTreeIter iter;
10166
10167   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10168     return;
10169
10170   cursor_path = NULL;
10171   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
10172     /* FIXME: we lost the cursor; should we get the first? */
10173     return;
10174
10175   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10176   _gtk_tree_view_find_node (tree_view, cursor_path,
10177                             &cursor_tree, &cursor_node);
10178
10179   if (cursor_tree == NULL)
10180     /* FIXME: we lost the cursor; should we get the first? */
10181     return;
10182
10183   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10184
10185   if (tree_view->priv->focus_column)
10186     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10187
10188   /* If focus stays in the area for this row, then just return for this round */
10189   if (cell_area && (count == -1 || count == 1) &&
10190       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10191     {
10192       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10193                                                tree_view->priv->model,
10194                                                &iter,
10195                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10196                                                cursor_node->children?TRUE:FALSE);
10197
10198       /* Save the last cell that had focus, if we hit the end of the view we'll give
10199        * focus back to it. */
10200       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10201
10202       /* If focus stays in the area, no need to change the cursor row */
10203       if (gtk_cell_area_focus (cell_area, direction))
10204         return;
10205     }
10206
10207   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10208   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10209                                                       cursor_node,
10210                                                       cursor_path);
10211
10212   if (selection_count == 0
10213       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10214       && !tree_view->priv->modify_selection_pressed
10215       && selectable)
10216     {
10217       /* Don't move the cursor, but just select the current node */
10218       new_cursor_tree = cursor_tree;
10219       new_cursor_node = cursor_node;
10220     }
10221   else
10222     {
10223       if (count == -1)
10224         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10225                                &new_cursor_tree, &new_cursor_node);
10226       else
10227         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10228                                &new_cursor_tree, &new_cursor_node);
10229     }
10230
10231   gtk_tree_path_free (cursor_path);
10232
10233   if (new_cursor_node)
10234     {
10235       cursor_path = _gtk_tree_view_find_path (tree_view,
10236                                               new_cursor_tree, new_cursor_node);
10237
10238       search_first_focusable_path (tree_view, &cursor_path,
10239                                    (count != -1),
10240                                    &new_cursor_tree,
10241                                    &new_cursor_node);
10242
10243       if (cursor_path)
10244         gtk_tree_path_free (cursor_path);
10245     }
10246
10247   /*
10248    * If the list has only one item and multi-selection is set then select
10249    * the row (if not yet selected).
10250    */
10251   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10252       new_cursor_node == NULL)
10253     {
10254       if (count == -1)
10255         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10256                                &new_cursor_tree, &new_cursor_node);
10257       else
10258         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10259                                &new_cursor_tree, &new_cursor_node);
10260
10261       if (new_cursor_node == NULL
10262           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
10263         {
10264           new_cursor_node = cursor_node;
10265           new_cursor_tree = cursor_tree;
10266         }
10267       else
10268         {
10269           new_cursor_node = NULL;
10270         }
10271     }
10272
10273   if (new_cursor_node)
10274     {
10275       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
10276       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10277       gtk_tree_path_free (cursor_path);
10278
10279       /* Give focus to the area in the new row */
10280       if (cell_area)
10281         gtk_cell_area_focus (cell_area, direction);
10282     }
10283   else
10284     {
10285       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10286
10287       if (!tree_view->priv->extend_selection_pressed)
10288         {
10289           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10290                                           count < 0 ?
10291                                           GTK_DIR_UP : GTK_DIR_DOWN))
10292             {
10293               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10294
10295               if (toplevel)
10296                 gtk_widget_child_focus (toplevel,
10297                                         count < 0 ?
10298                                         GTK_DIR_TAB_BACKWARD :
10299                                         GTK_DIR_TAB_FORWARD);
10300
10301               grab_focus = FALSE;
10302             }
10303         }
10304       else
10305         {
10306           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10307         }
10308
10309       if (cell_area)
10310         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10311     }
10312
10313   if (grab_focus)
10314     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10315 }
10316
10317 static void
10318 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10319                                         gint         count)
10320 {
10321   GtkRBTree *cursor_tree = NULL;
10322   GtkRBNode *cursor_node = NULL;
10323   GtkTreePath *old_cursor_path = NULL;
10324   GtkTreePath *cursor_path = NULL;
10325   GtkRBTree *start_cursor_tree = NULL;
10326   GtkRBNode *start_cursor_node = NULL;
10327   gint y;
10328   gint window_y;
10329   gint vertical_separator;
10330
10331   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10332     return;
10333
10334   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10335     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10336   else
10337     /* This is sorta weird.  Focus in should give us a cursor */
10338     return;
10339
10340   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10341   _gtk_tree_view_find_node (tree_view, old_cursor_path,
10342                             &cursor_tree, &cursor_node);
10343
10344   if (cursor_tree == NULL)
10345     {
10346       /* FIXME: we lost the cursor.  Should we try to get one? */
10347       gtk_tree_path_free (old_cursor_path);
10348       return;
10349     }
10350   g_return_if_fail (cursor_node != NULL);
10351
10352   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10353   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10354   y += tree_view->priv->cursor_offset;
10355   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10356   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10357
10358   if (y >= tree_view->priv->height)
10359     y = tree_view->priv->height - 1;
10360
10361   tree_view->priv->cursor_offset =
10362     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10363                              &cursor_tree, &cursor_node);
10364
10365   if (cursor_tree == NULL)
10366     {
10367       /* FIXME: we lost the cursor.  Should we try to get one? */
10368       gtk_tree_path_free (old_cursor_path);
10369       return;
10370     }
10371
10372   if (tree_view->priv->cursor_offset
10373       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10374     {
10375       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10376                              &cursor_tree, &cursor_node);
10377       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10378     }
10379
10380   y -= tree_view->priv->cursor_offset;
10381   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10382
10383   start_cursor_tree = cursor_tree;
10384   start_cursor_node = cursor_node;
10385
10386   if (! search_first_focusable_path (tree_view, &cursor_path,
10387                                      (count != -1),
10388                                      &cursor_tree, &cursor_node))
10389     {
10390       /* It looks like we reached the end of the view without finding
10391        * a focusable row.  We will step backwards to find the last
10392        * focusable row.
10393        */
10394       cursor_tree = start_cursor_tree;
10395       cursor_node = start_cursor_node;
10396       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10397
10398       search_first_focusable_path (tree_view, &cursor_path,
10399                                    (count == -1),
10400                                    &cursor_tree, &cursor_node);
10401     }
10402
10403   if (!cursor_path)
10404     goto cleanup;
10405
10406   /* update y */
10407   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10408
10409   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10410
10411   y -= window_y;
10412   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10413   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10414   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10415
10416   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10417     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10418
10419   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10420
10421 cleanup:
10422   gtk_tree_path_free (old_cursor_path);
10423   gtk_tree_path_free (cursor_path);
10424 }
10425
10426 static void
10427 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10428                                       gint         count)
10429 {
10430   GtkRBTree *cursor_tree = NULL;
10431   GtkRBNode *cursor_node = NULL;
10432   GtkTreePath *cursor_path = NULL;
10433   GtkTreeViewColumn *column;
10434   GtkTreeIter iter;
10435   GList *list;
10436   gboolean found_column = FALSE;
10437   gboolean rtl;
10438   GtkDirectionType direction;
10439   GtkCellArea     *cell_area;
10440   GtkCellRenderer *last_focus_cell = NULL;
10441   GtkCellArea     *last_focus_area = NULL;
10442
10443   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10444
10445   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10446     return;
10447
10448   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10449     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10450   else
10451     return;
10452
10453   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
10454   if (cursor_tree == NULL)
10455     return;
10456   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10457     {
10458       gtk_tree_path_free (cursor_path);
10459       return;
10460     }
10461   gtk_tree_path_free (cursor_path);
10462
10463   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10464   if (tree_view->priv->focus_column)
10465     {
10466       /* Save the cell/area we are moving focus from, if moving the cursor
10467        * by one step hits the end we'll set focus back here */
10468       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10469       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10470
10471       for (; list; list = (rtl ? list->prev : list->next))
10472         {
10473           if (list->data == tree_view->priv->focus_column)
10474             break;
10475         }
10476     }
10477
10478   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10479
10480   while (list)
10481     {
10482       column = list->data;
10483       if (gtk_tree_view_column_get_visible (column) == FALSE)
10484         goto loop_end;
10485
10486       gtk_tree_view_column_cell_set_cell_data (column,
10487                                                tree_view->priv->model,
10488                                                &iter,
10489                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10490                                                cursor_node->children?TRUE:FALSE);
10491
10492       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10493       if (gtk_cell_area_focus (cell_area, direction))
10494         {
10495           tree_view->priv->focus_column = column;
10496           found_column = TRUE;
10497           break;
10498         }
10499
10500     loop_end:
10501       if (count == 1)
10502         list = rtl ? list->prev : list->next;
10503       else
10504         list = rtl ? list->next : list->prev;
10505     }
10506
10507   if (found_column)
10508     {
10509       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10510         _gtk_tree_view_queue_draw_node (tree_view,
10511                                         cursor_tree,
10512                                         cursor_node,
10513                                         NULL);
10514       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10515       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10516     }
10517   else
10518     {
10519       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10520
10521       if (last_focus_area)
10522         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10523     }
10524
10525   gtk_tree_view_clamp_column_visible (tree_view,
10526                                       tree_view->priv->focus_column, TRUE);
10527 }
10528
10529 static void
10530 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10531                                      gint         count)
10532 {
10533   GtkRBTree *cursor_tree;
10534   GtkRBNode *cursor_node;
10535   GtkTreePath *path;
10536   GtkTreePath *old_path;
10537
10538   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10539     return;
10540
10541   g_return_if_fail (tree_view->priv->tree != NULL);
10542
10543   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10544
10545   cursor_tree = tree_view->priv->tree;
10546   cursor_node = cursor_tree->root;
10547
10548   if (count == -1)
10549     {
10550       while (cursor_node && cursor_node->left != cursor_tree->nil)
10551         cursor_node = cursor_node->left;
10552
10553       /* Now go forward to find the first focusable row. */
10554       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10555       search_first_focusable_path (tree_view, &path,
10556                                    TRUE, &cursor_tree, &cursor_node);
10557     }
10558   else
10559     {
10560       do
10561         {
10562           while (cursor_node && cursor_node->right != cursor_tree->nil)
10563             cursor_node = cursor_node->right;
10564           if (cursor_node->children == NULL)
10565             break;
10566
10567           cursor_tree = cursor_node->children;
10568           cursor_node = cursor_tree->root;
10569         }
10570       while (1);
10571
10572       /* Now go backwards to find last focusable row. */
10573       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10574       search_first_focusable_path (tree_view, &path,
10575                                    FALSE, &cursor_tree, &cursor_node);
10576     }
10577
10578   if (!path)
10579     goto cleanup;
10580
10581   if (gtk_tree_path_compare (old_path, path))
10582     {
10583       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10584       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10585     }
10586   else
10587     {
10588       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10589     }
10590
10591 cleanup:
10592   gtk_tree_path_free (old_path);
10593   gtk_tree_path_free (path);
10594 }
10595
10596 static gboolean
10597 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10598 {
10599   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10600     return FALSE;
10601
10602   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10603     return FALSE;
10604
10605   gtk_tree_selection_select_all (tree_view->priv->selection);
10606
10607   return TRUE;
10608 }
10609
10610 static gboolean
10611 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10612 {
10613   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10614     return FALSE;
10615
10616   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10617     return FALSE;
10618
10619   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10620
10621   return TRUE;
10622 }
10623
10624 static gboolean
10625 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10626                                       gboolean     start_editing)
10627 {
10628   GtkRBTree *new_tree = NULL;
10629   GtkRBNode *new_node = NULL;
10630   GtkRBTree *cursor_tree = NULL;
10631   GtkRBNode *cursor_node = NULL;
10632   GtkTreePath *cursor_path = NULL;
10633   GtkTreeSelectMode mode = 0;
10634
10635   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10636     return FALSE;
10637
10638   if (tree_view->priv->cursor)
10639     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10640
10641   if (cursor_path == NULL)
10642     return FALSE;
10643
10644   _gtk_tree_view_find_node (tree_view, cursor_path,
10645                             &cursor_tree, &cursor_node);
10646
10647   if (cursor_tree == NULL)
10648     {
10649       gtk_tree_path_free (cursor_path);
10650       return FALSE;
10651     }
10652
10653   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10654       tree_view->priv->focus_column)
10655     {
10656       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10657         {
10658           gtk_tree_path_free (cursor_path);
10659           return TRUE;
10660         }
10661     }
10662
10663   if (tree_view->priv->modify_selection_pressed)
10664     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10665   if (tree_view->priv->extend_selection_pressed)
10666     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10667
10668   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10669                                             cursor_node,
10670                                             cursor_tree,
10671                                             cursor_path,
10672                                             mode,
10673                                             FALSE);
10674
10675   /* We bail out if the original (tree, node) don't exist anymore after
10676    * handling the selection-changed callback.  We do return TRUE because
10677    * the key press has been handled at this point.
10678    */
10679   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10680
10681   if (cursor_tree != new_tree || cursor_node != new_node)
10682     return FALSE;
10683
10684   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10685
10686   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10687   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10688
10689   if (!tree_view->priv->extend_selection_pressed)
10690     gtk_tree_view_row_activated (tree_view, cursor_path,
10691                                  tree_view->priv->focus_column);
10692
10693   gtk_tree_path_free (cursor_path);
10694
10695   return TRUE;
10696 }
10697
10698 static gboolean
10699 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10700 {
10701   GtkRBTree *new_tree = NULL;
10702   GtkRBNode *new_node = NULL;
10703   GtkRBTree *cursor_tree = NULL;
10704   GtkRBNode *cursor_node = NULL;
10705   GtkTreePath *cursor_path = NULL;
10706
10707   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10708     return FALSE;
10709
10710   cursor_path = NULL;
10711   if (tree_view->priv->cursor)
10712     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10713
10714   if (cursor_path == NULL)
10715     return FALSE;
10716
10717   _gtk_tree_view_find_node (tree_view, cursor_path,
10718                             &cursor_tree, &cursor_node);
10719   if (cursor_tree == NULL)
10720     {
10721       gtk_tree_path_free (cursor_path);
10722       return FALSE;
10723     }
10724
10725   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10726                                             cursor_node,
10727                                             cursor_tree,
10728                                             cursor_path,
10729                                             GTK_TREE_SELECT_MODE_TOGGLE,
10730                                             FALSE);
10731
10732   /* We bail out if the original (tree, node) don't exist anymore after
10733    * handling the selection-changed callback.  We do return TRUE because
10734    * the key press has been handled at this point.
10735    */
10736   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10737
10738   if (cursor_tree != new_tree || cursor_node != new_node)
10739     return FALSE;
10740
10741   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10742
10743   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10744   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10745   gtk_tree_path_free (cursor_path);
10746
10747   return TRUE;
10748 }
10749
10750 static gboolean
10751 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10752                                                gboolean     logical,
10753                                                gboolean     expand,
10754                                                gboolean     open_all)
10755 {
10756   GtkTreePath *cursor_path = NULL;
10757   GtkRBTree *tree;
10758   GtkRBNode *node;
10759
10760   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10761     return FALSE;
10762
10763   cursor_path = NULL;
10764   if (tree_view->priv->cursor)
10765     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10766
10767   if (cursor_path == NULL)
10768     return FALSE;
10769
10770   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10771     return FALSE;
10772
10773   /* Don't handle the event if we aren't an expander */
10774   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10775     return FALSE;
10776
10777   if (!logical
10778       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10779     expand = !expand;
10780
10781   if (expand)
10782     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10783   else
10784     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10785
10786   gtk_tree_path_free (cursor_path);
10787
10788   return TRUE;
10789 }
10790
10791 static gboolean
10792 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10793 {
10794   GtkRBTree *cursor_tree = NULL;
10795   GtkRBNode *cursor_node = NULL;
10796   GtkTreePath *cursor_path = NULL;
10797   GdkModifierType state;
10798
10799   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10800     goto out;
10801
10802   cursor_path = NULL;
10803   if (tree_view->priv->cursor)
10804     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10805
10806   if (cursor_path == NULL)
10807     goto out;
10808
10809   _gtk_tree_view_find_node (tree_view, cursor_path,
10810                             &cursor_tree, &cursor_node);
10811   if (cursor_tree == NULL)
10812     {
10813       gtk_tree_path_free (cursor_path);
10814       goto out;
10815     }
10816
10817   if (cursor_tree->parent_node)
10818     {
10819       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10820       cursor_node = cursor_tree->parent_node;
10821       cursor_tree = cursor_tree->parent_tree;
10822
10823       gtk_tree_path_up (cursor_path);
10824
10825       if (gtk_get_current_event_state (&state))
10826         {
10827           GdkModifierType modify_mod_mask;
10828
10829           modify_mod_mask =
10830             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10831                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10832
10833           if ((state & modify_mod_mask) == modify_mod_mask)
10834             tree_view->priv->modify_selection_pressed = TRUE;
10835         }
10836
10837       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10838       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10839
10840       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10841       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10842       gtk_tree_path_free (cursor_path);
10843
10844       tree_view->priv->modify_selection_pressed = FALSE;
10845
10846       return TRUE;
10847     }
10848
10849  out:
10850
10851   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10852   return FALSE;
10853 }
10854
10855 static gboolean
10856 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10857 {
10858   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10859   tree_view->priv->typeselect_flush_timeout = 0;
10860
10861   return FALSE;
10862 }
10863
10864 /* Cut and paste from gtkwindow.c */
10865 static void
10866 send_focus_change (GtkWidget *widget,
10867                    GdkDevice *device,
10868                    gboolean   in)
10869 {
10870   GdkDeviceManager *device_manager;
10871   GList *devices, *d;
10872
10873   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10874   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10875   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10876   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10877
10878   for (d = devices; d; d = d->next)
10879     {
10880       GdkDevice *dev = d->data;
10881       GdkEvent *fevent;
10882       GdkWindow *window;
10883
10884       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10885         continue;
10886
10887       window = gtk_widget_get_window (widget);
10888
10889       /* Skip non-master keyboards that haven't
10890        * selected for events from this window
10891        */
10892       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10893           !gdk_window_get_device_events (window, dev))
10894         continue;
10895
10896       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10897
10898       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10899       fevent->focus_change.window = g_object_ref (window);
10900       fevent->focus_change.in = in;
10901       gdk_event_set_device (fevent, device);
10902
10903       gtk_widget_send_focus_change (widget, fevent);
10904
10905       gdk_event_free (fevent);
10906     }
10907
10908   g_list_free (devices);
10909 }
10910
10911 static void
10912 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10913 {
10914   GtkWidget *frame, *vbox, *toplevel;
10915   GdkScreen *screen;
10916
10917   if (tree_view->priv->search_custom_entry_set)
10918     return;
10919
10920   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10921   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10922
10923    if (tree_view->priv->search_window != NULL)
10924      {
10925        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10926          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10927                                       GTK_WINDOW (tree_view->priv->search_window));
10928        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10929          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10930                                          GTK_WINDOW (tree_view->priv->search_window));
10931
10932        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10933
10934        return;
10935      }
10936
10937   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10938   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10939
10940   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10941     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10942                                  GTK_WINDOW (tree_view->priv->search_window));
10943
10944   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10945                             GDK_WINDOW_TYPE_HINT_UTILITY);
10946   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10947   g_signal_connect (tree_view->priv->search_window, "delete-event",
10948                     G_CALLBACK (gtk_tree_view_search_delete_event),
10949                     tree_view);
10950   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10951                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10952                     tree_view);
10953   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10954                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10955                     tree_view);
10956   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10957                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10958                     tree_view);
10959
10960   frame = gtk_frame_new (NULL);
10961   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10962   gtk_widget_show (frame);
10963   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10964
10965   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10966   gtk_widget_show (vbox);
10967   gtk_container_add (GTK_CONTAINER (frame), vbox);
10968   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10969
10970   /* add entry */
10971   tree_view->priv->search_entry = gtk_entry_new ();
10972   gtk_widget_show (tree_view->priv->search_entry);
10973   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10974                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10975                     tree_view);
10976   g_signal_connect (tree_view->priv->search_entry,
10977                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10978                     tree_view);
10979
10980   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10981                     "preedit-changed",
10982                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10983                     tree_view);
10984
10985   gtk_container_add (GTK_CONTAINER (vbox),
10986                      tree_view->priv->search_entry);
10987
10988   gtk_widget_realize (tree_view->priv->search_entry);
10989 }
10990
10991 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10992  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10993  */
10994 static gboolean
10995 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10996                                              GdkDevice   *device,
10997                                              gboolean     keybinding)
10998 {
10999   /* We only start interactive search if we have focus or the columns
11000    * have focus.  If one of our children have focus, we don't want to
11001    * start the search.
11002    */
11003   GList *list;
11004   gboolean found_focus = FALSE;
11005   GtkWidgetClass *entry_parent_class;
11006
11007   if (!tree_view->priv->enable_search && !keybinding)
11008     return FALSE;
11009
11010   if (tree_view->priv->search_custom_entry_set)
11011     return FALSE;
11012
11013   if (tree_view->priv->search_window != NULL &&
11014       gtk_widget_get_visible (tree_view->priv->search_window))
11015     return TRUE;
11016
11017   for (list = tree_view->priv->columns; list; list = list->next)
11018     {
11019       GtkTreeViewColumn *column;
11020       GtkWidget         *button;
11021
11022       column = list->data;
11023       if (!gtk_tree_view_column_get_visible (column))
11024         continue;
11025
11026       button = gtk_tree_view_column_get_button (column);
11027       if (gtk_widget_has_focus (button))
11028         {
11029           found_focus = TRUE;
11030           break;
11031         }
11032     }
11033
11034   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11035     found_focus = TRUE;
11036
11037   if (!found_focus)
11038     return FALSE;
11039
11040   if (tree_view->priv->search_column < 0)
11041     return FALSE;
11042
11043   gtk_tree_view_ensure_interactive_directory (tree_view);
11044
11045   if (keybinding)
11046     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11047
11048   /* done, show it */
11049   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11050   gtk_widget_show (tree_view->priv->search_window);
11051   if (tree_view->priv->search_entry_changed_id == 0)
11052     {
11053       tree_view->priv->search_entry_changed_id =
11054         g_signal_connect (tree_view->priv->search_entry, "changed",
11055                           G_CALLBACK (gtk_tree_view_search_init),
11056                           tree_view);
11057     }
11058
11059   tree_view->priv->typeselect_flush_timeout =
11060     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11061                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11062                    tree_view);
11063
11064   /* Grab focus will select all the text.  We don't want that to happen, so we
11065    * call the parent instance and bypass the selection change.  This is probably
11066    * really non-kosher. */
11067   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11068   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11069
11070   /* send focus-in event */
11071   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11072
11073   /* search first matching iter */
11074   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11075
11076   return TRUE;
11077 }
11078
11079 static gboolean
11080 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11081 {
11082   return gtk_tree_view_real_start_interactive_search (tree_view,
11083                                                       gtk_get_current_event_device (),
11084                                                       TRUE);
11085 }
11086
11087 /* this function returns the new width of the column being resized given
11088  * the column and x position of the cursor; the x cursor position is passed
11089  * in as a pointer and automagicly corrected if it's beyond min/max limits
11090  */
11091 static gint
11092 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11093                                 gint       i,
11094                                 gint      *x)
11095 {
11096   GtkAllocation allocation;
11097   GtkTreeViewColumn *column;
11098   GtkRequisition button_req;
11099   gint max_width, min_width;
11100   gint width;
11101   gboolean rtl;
11102
11103   /* first translate the x position from widget->window
11104    * to clist->clist_window
11105    */
11106   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11107   column = g_list_nth (tree_view->priv->columns, i)->data;
11108   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11109   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11110
11111   /* Clamp down the value */
11112   min_width = gtk_tree_view_column_get_min_width (column);
11113   if (min_width == -1)
11114     {
11115       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11116       width = MAX (button_req.width, width);
11117     }
11118   else
11119     width = MAX (min_width, width);
11120
11121   max_width = gtk_tree_view_column_get_max_width (column);
11122   if (max_width != -1)
11123     width = MIN (width, max_width);
11124
11125   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11126
11127   return width;
11128 }
11129
11130
11131 /* FIXME this adjust_allocation is a big cut-and-paste from
11132  * GtkCList, needs to be some "official" way to do this
11133  * factored out.
11134  */
11135 typedef struct
11136 {
11137   GdkWindow *window;
11138   int dx;
11139   int dy;
11140 } ScrollData;
11141
11142 /* The window to which widget->window is relative */
11143 #define ALLOCATION_WINDOW(widget)               \
11144    (!gtk_widget_get_has_window (widget) ?                   \
11145     gtk_widget_get_window (widget) :                        \
11146     gdk_window_get_parent (gtk_widget_get_window (widget)))
11147
11148 static void
11149 adjust_allocation_recurse (GtkWidget *widget,
11150                            gpointer   data)
11151 {
11152   GtkAllocation allocation;
11153   ScrollData *scroll_data = data;
11154
11155   /* Need to really size allocate instead of just poking
11156    * into widget->allocation if the widget is not realized.
11157    * FIXME someone figure out why this was.
11158    */
11159   gtk_widget_get_allocation (widget, &allocation);
11160   if (!gtk_widget_get_realized (widget))
11161     {
11162       if (gtk_widget_get_visible (widget))
11163         {
11164           GdkRectangle tmp_rectangle = allocation;
11165           tmp_rectangle.x += scroll_data->dx;
11166           tmp_rectangle.y += scroll_data->dy;
11167
11168           gtk_widget_size_allocate (widget, &tmp_rectangle);
11169         }
11170     }
11171   else
11172     {
11173       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11174         {
11175           allocation.x += scroll_data->dx;
11176           allocation.y += scroll_data->dy;
11177           gtk_widget_set_allocation (widget, &allocation);
11178
11179           if (GTK_IS_CONTAINER (widget))
11180             gtk_container_forall (GTK_CONTAINER (widget),
11181                                   adjust_allocation_recurse,
11182                                   data);
11183         }
11184     }
11185 }
11186
11187 static void
11188 adjust_allocation (GtkWidget *widget,
11189                    int        dx,
11190                    int        dy)
11191 {
11192   ScrollData scroll_data;
11193
11194   if (gtk_widget_get_realized (widget))
11195     scroll_data.window = ALLOCATION_WINDOW (widget);
11196   else
11197     scroll_data.window = NULL;
11198
11199   scroll_data.dx = dx;
11200   scroll_data.dy = dy;
11201
11202   adjust_allocation_recurse (widget, &scroll_data);
11203 }
11204
11205 /* Callbacks */
11206 static void
11207 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11208                                   GtkTreeView   *tree_view)
11209 {
11210   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11211     {
11212       GtkStyleContext *context;
11213       gint dy;
11214
11215       gdk_window_move (tree_view->priv->bin_window,
11216                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11217                        gtk_tree_view_get_effective_header_height (tree_view));
11218       gdk_window_move (tree_view->priv->header_window,
11219                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11220                        0);
11221       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11222       if (dy)
11223         {
11224           update_prelight (tree_view,
11225                            tree_view->priv->event_last_x,
11226                            tree_view->priv->event_last_y - dy);
11227
11228           if (tree_view->priv->edited_column)
11229             {
11230               GList *list;
11231               GtkTreeViewChild *child = NULL;
11232               GtkCellEditable *edit_widget;
11233               GtkCellArea *area;
11234
11235               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11236               edit_widget = gtk_cell_area_get_edit_widget (area);
11237               if (GTK_IS_WIDGET (edit_widget))
11238                 {
11239                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11240
11241                   for (list = tree_view->priv->children; list; list = list->next)
11242                     {
11243                       child = (GtkTreeViewChild *)list->data;
11244                       if (child->widget == GTK_WIDGET (edit_widget))
11245                         {
11246                           child->y += dy;
11247                           break;
11248                         }
11249                     }
11250                 }
11251             }
11252         }
11253       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11254
11255       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11256       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11257
11258       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11259         {
11260           /* update our dy and top_row */
11261           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11262
11263           if (!tree_view->priv->in_top_row_to_dy)
11264             gtk_tree_view_dy_to_top_row (tree_view);
11265         }
11266
11267       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11268       gtk_tree_view_bin_process_updates (tree_view);
11269     }
11270 }
11271
11272 \f
11273
11274 /* Public methods
11275  */
11276
11277 /**
11278  * gtk_tree_view_new:
11279  *
11280  * Creates a new #GtkTreeView widget.
11281  *
11282  * Return value: A newly created #GtkTreeView widget.
11283  **/
11284 GtkWidget *
11285 gtk_tree_view_new (void)
11286 {
11287   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11288 }
11289
11290 /**
11291  * gtk_tree_view_new_with_model:
11292  * @model: the model.
11293  *
11294  * Creates a new #GtkTreeView widget with the model initialized to @model.
11295  *
11296  * Return value: A newly created #GtkTreeView widget.
11297  **/
11298 GtkWidget *
11299 gtk_tree_view_new_with_model (GtkTreeModel *model)
11300 {
11301   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11302 }
11303
11304 /* Public Accessors
11305  */
11306
11307 /**
11308  * gtk_tree_view_get_model:
11309  * @tree_view: a #GtkTreeView
11310  *
11311  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11312  * model is unset.
11313  *
11314  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11315  **/
11316 GtkTreeModel *
11317 gtk_tree_view_get_model (GtkTreeView *tree_view)
11318 {
11319   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11320
11321   return tree_view->priv->model;
11322 }
11323
11324 /**
11325  * gtk_tree_view_set_model:
11326  * @tree_view: A #GtkTreeNode.
11327  * @model: (allow-none): The model.
11328  *
11329  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11330  * set, it will remove it before setting the new model.  If @model is %NULL,
11331  * then it will unset the old model.
11332  **/
11333 void
11334 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11335                          GtkTreeModel *model)
11336 {
11337   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11338   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11339
11340   if (model == tree_view->priv->model)
11341     return;
11342
11343   if (tree_view->priv->scroll_to_path)
11344     {
11345       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11346       tree_view->priv->scroll_to_path = NULL;
11347     }
11348
11349   if (tree_view->priv->rubber_band_status)
11350     gtk_tree_view_stop_rubber_band (tree_view);
11351
11352   if (tree_view->priv->model)
11353     {
11354       GList *tmplist = tree_view->priv->columns;
11355       GtkStyleContext *context;
11356
11357       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11358       gtk_tree_view_stop_editing (tree_view, TRUE);
11359
11360       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11361       gtk_style_context_cancel_animations (context, NULL);
11362
11363       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11364                                             gtk_tree_view_row_changed,
11365                                             tree_view);
11366       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11367                                             gtk_tree_view_row_inserted,
11368                                             tree_view);
11369       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11370                                             gtk_tree_view_row_has_child_toggled,
11371                                             tree_view);
11372       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11373                                             gtk_tree_view_row_deleted,
11374                                             tree_view);
11375       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11376                                             gtk_tree_view_rows_reordered,
11377                                             tree_view);
11378
11379       for (; tmplist; tmplist = tmplist->next)
11380         _gtk_tree_view_column_unset_model (tmplist->data,
11381                                            tree_view->priv->model);
11382
11383       if (tree_view->priv->tree)
11384         gtk_tree_view_free_rbtree (tree_view);
11385
11386       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11387       tree_view->priv->drag_dest_row = NULL;
11388       gtk_tree_row_reference_free (tree_view->priv->cursor);
11389       tree_view->priv->cursor = NULL;
11390       gtk_tree_row_reference_free (tree_view->priv->anchor);
11391       tree_view->priv->anchor = NULL;
11392       gtk_tree_row_reference_free (tree_view->priv->top_row);
11393       tree_view->priv->top_row = NULL;
11394       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11395       tree_view->priv->scroll_to_path = NULL;
11396
11397       tree_view->priv->scroll_to_column = NULL;
11398
11399       g_object_unref (tree_view->priv->model);
11400
11401       tree_view->priv->search_column = -1;
11402       tree_view->priv->fixed_height_check = 0;
11403       tree_view->priv->fixed_height = -1;
11404       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11405       tree_view->priv->last_button_x = -1;
11406       tree_view->priv->last_button_y = -1;
11407     }
11408
11409   tree_view->priv->model = model;
11410
11411   if (tree_view->priv->model)
11412     {
11413       gint i;
11414       GtkTreePath *path;
11415       GtkTreeIter iter;
11416       GtkTreeModelFlags flags;
11417
11418       if (tree_view->priv->search_column == -1)
11419         {
11420           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11421             {
11422               GType type = gtk_tree_model_get_column_type (model, i);
11423
11424               if (g_value_type_transformable (type, G_TYPE_STRING))
11425                 {
11426                   tree_view->priv->search_column = i;
11427                   break;
11428                 }
11429             }
11430         }
11431
11432       g_object_ref (tree_view->priv->model);
11433       g_signal_connect (tree_view->priv->model,
11434                         "row-changed",
11435                         G_CALLBACK (gtk_tree_view_row_changed),
11436                         tree_view);
11437       g_signal_connect (tree_view->priv->model,
11438                         "row-inserted",
11439                         G_CALLBACK (gtk_tree_view_row_inserted),
11440                         tree_view);
11441       g_signal_connect (tree_view->priv->model,
11442                         "row-has-child-toggled",
11443                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11444                         tree_view);
11445       g_signal_connect (tree_view->priv->model,
11446                         "row-deleted",
11447                         G_CALLBACK (gtk_tree_view_row_deleted),
11448                         tree_view);
11449       g_signal_connect (tree_view->priv->model,
11450                         "rows-reordered",
11451                         G_CALLBACK (gtk_tree_view_rows_reordered),
11452                         tree_view);
11453
11454       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11455       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11456         tree_view->priv->is_list = TRUE;
11457       else
11458         tree_view->priv->is_list = FALSE;
11459
11460       path = gtk_tree_path_new_first ();
11461       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11462         {
11463           tree_view->priv->tree = _gtk_rbtree_new ();
11464           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11465         }
11466       gtk_tree_path_free (path);
11467
11468       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11469       install_presize_handler (tree_view);
11470     }
11471
11472   g_object_notify (G_OBJECT (tree_view), "model");
11473
11474   if (tree_view->priv->selection)
11475   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11476
11477   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11478     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11479 }
11480
11481 /**
11482  * gtk_tree_view_get_selection:
11483  * @tree_view: A #GtkTreeView.
11484  *
11485  * Gets the #GtkTreeSelection associated with @tree_view.
11486  *
11487  * Return value: (transfer none): A #GtkTreeSelection object.
11488  **/
11489 GtkTreeSelection *
11490 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11491 {
11492   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11493
11494   return tree_view->priv->selection;
11495 }
11496
11497 /**
11498  * gtk_tree_view_get_hadjustment:
11499  * @tree_view: A #GtkTreeView
11500  *
11501  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11502  *
11503  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11504  *     if none is currently being used.
11505  *
11506  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11507  **/
11508 GtkAdjustment *
11509 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11510 {
11511   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11512
11513   return gtk_tree_view_do_get_hadjustment (tree_view);
11514 }
11515
11516 static GtkAdjustment *
11517 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11518 {
11519   return tree_view->priv->hadjustment;
11520 }
11521
11522 /**
11523  * gtk_tree_view_set_hadjustment:
11524  * @tree_view: A #GtkTreeView
11525  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11526  *
11527  * Sets the #GtkAdjustment for the current horizontal aspect.
11528  *
11529  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11530  **/
11531 void
11532 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11533                                GtkAdjustment *adjustment)
11534 {
11535   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11536   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11537
11538   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11539 }
11540
11541 static void
11542 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11543                                   GtkAdjustment *adjustment)
11544 {
11545   GtkTreeViewPrivate *priv = tree_view->priv;
11546
11547   if (adjustment && priv->hadjustment == adjustment)
11548     return;
11549
11550   if (priv->hadjustment != NULL)
11551     {
11552       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11553                                             gtk_tree_view_adjustment_changed,
11554                                             tree_view);
11555       g_object_unref (priv->hadjustment);
11556     }
11557
11558   if (adjustment == NULL)
11559     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11560                                      0.0, 0.0, 0.0);
11561
11562   g_signal_connect (adjustment, "value-changed",
11563                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11564   priv->hadjustment = g_object_ref_sink (adjustment);
11565   /* FIXME: Adjustment should probably be populated here with fresh values, but
11566    * internal details are too complicated for me to decipher right now.
11567    */
11568   gtk_tree_view_adjustment_changed (NULL, tree_view);
11569
11570   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11571 }
11572
11573 /**
11574  * gtk_tree_view_get_vadjustment:
11575  * @tree_view: A #GtkTreeView
11576  *
11577  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11578  *
11579  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11580  *     if none is currently being used.
11581  *
11582  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11583  **/
11584 GtkAdjustment *
11585 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11586 {
11587   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11588
11589   return gtk_tree_view_do_get_vadjustment (tree_view);
11590 }
11591
11592 static GtkAdjustment *
11593 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11594 {
11595   return tree_view->priv->vadjustment;
11596 }
11597
11598 /**
11599  * gtk_tree_view_set_vadjustment:
11600  * @tree_view: A #GtkTreeView
11601  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11602  *
11603  * Sets the #GtkAdjustment for the current vertical aspect.
11604  *
11605  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11606  **/
11607 void
11608 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11609                                GtkAdjustment *adjustment)
11610 {
11611   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11612   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11613
11614   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11615 }
11616
11617 static void
11618 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11619                                   GtkAdjustment *adjustment)
11620 {
11621   GtkTreeViewPrivate *priv = tree_view->priv;
11622
11623   if (adjustment && priv->vadjustment == adjustment)
11624     return;
11625
11626   if (priv->vadjustment != NULL)
11627     {
11628       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11629                                             gtk_tree_view_adjustment_changed,
11630                                             tree_view);
11631       g_object_unref (priv->vadjustment);
11632     }
11633
11634   if (adjustment == NULL)
11635     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11636                                      0.0, 0.0, 0.0);
11637
11638   g_signal_connect (adjustment, "value-changed",
11639                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11640   priv->vadjustment = g_object_ref_sink (adjustment);
11641   /* FIXME: Adjustment should probably be populated here with fresh values, but
11642    * internal details are too complicated for me to decipher right now.
11643    */
11644   gtk_tree_view_adjustment_changed (NULL, tree_view);
11645   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11646 }
11647
11648 /* Column and header operations */
11649
11650 /**
11651  * gtk_tree_view_get_headers_visible:
11652  * @tree_view: A #GtkTreeView.
11653  *
11654  * Returns %TRUE if the headers on the @tree_view are visible.
11655  *
11656  * Return value: Whether the headers are visible or not.
11657  **/
11658 gboolean
11659 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11660 {
11661   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11662
11663   return tree_view->priv->headers_visible;
11664 }
11665
11666 /**
11667  * gtk_tree_view_set_headers_visible:
11668  * @tree_view: A #GtkTreeView.
11669  * @headers_visible: %TRUE if the headers are visible
11670  *
11671  * Sets the visibility state of the headers.
11672  **/
11673 void
11674 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11675                                    gboolean     headers_visible)
11676 {
11677   gint x, y;
11678   GList *list;
11679   GtkTreeViewColumn *column;
11680   GtkAllocation allocation;
11681   GtkWidget *button;
11682
11683   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11684
11685   headers_visible = !! headers_visible;
11686
11687   if (tree_view->priv->headers_visible == headers_visible)
11688     return;
11689
11690   tree_view->priv->headers_visible = headers_visible == TRUE;
11691
11692   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11693     {
11694       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11695       if (headers_visible)
11696         {
11697           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11698           gdk_window_move_resize (tree_view->priv->bin_window,
11699                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11700                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11701
11702           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11703             gtk_tree_view_map_buttons (tree_view);
11704         }
11705       else
11706         {
11707           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11708
11709           for (list = tree_view->priv->columns; list; list = list->next)
11710             {
11711               column = list->data;
11712               button = gtk_tree_view_column_get_button (column);
11713
11714               gtk_widget_hide (button);
11715               gtk_widget_unmap (button);
11716             }
11717           gdk_window_hide (tree_view->priv->header_window);
11718         }
11719     }
11720
11721   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11722   gtk_adjustment_configure (tree_view->priv->vadjustment,
11723                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11724                             0,
11725                             tree_view->priv->height,
11726                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11727                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11728                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11729
11730   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11731
11732   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11733 }
11734
11735 /**
11736  * gtk_tree_view_columns_autosize:
11737  * @tree_view: A #GtkTreeView.
11738  *
11739  * Resizes all columns to their optimal width. Only works after the
11740  * treeview has been realized.
11741  **/
11742 void
11743 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11744 {
11745   gboolean dirty = FALSE;
11746   GList *list;
11747   GtkTreeViewColumn *column;
11748
11749   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11750
11751   for (list = tree_view->priv->columns; list; list = list->next)
11752     {
11753       column = list->data;
11754       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11755         continue;
11756       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11757       dirty = TRUE;
11758     }
11759
11760   if (dirty)
11761     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11762 }
11763
11764 /**
11765  * gtk_tree_view_set_headers_clickable:
11766  * @tree_view: A #GtkTreeView.
11767  * @setting: %TRUE if the columns are clickable.
11768  *
11769  * Allow the column title buttons to be clicked.
11770  **/
11771 void
11772 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11773                                      gboolean   setting)
11774 {
11775   GList *list;
11776
11777   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11778
11779   for (list = tree_view->priv->columns; list; list = list->next)
11780     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11781
11782   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11783 }
11784
11785
11786 /**
11787  * gtk_tree_view_get_headers_clickable:
11788  * @tree_view: A #GtkTreeView.
11789  *
11790  * Returns whether all header columns are clickable.
11791  *
11792  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11793  *
11794  * Since: 2.10
11795  **/
11796 gboolean
11797 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11798 {
11799   GList *list;
11800
11801   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11802
11803   for (list = tree_view->priv->columns; list; list = list->next)
11804     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11805       return FALSE;
11806
11807   return TRUE;
11808 }
11809
11810 /**
11811  * gtk_tree_view_set_rules_hint
11812  * @tree_view: a #GtkTreeView
11813  * @setting: %TRUE if the tree requires reading across rows
11814  *
11815  * This function tells GTK+ that the user interface for your
11816  * application requires users to read across tree rows and associate
11817  * cells with one another. By default, GTK+ will then render the tree
11818  * with alternating row colors. Do <emphasis>not</emphasis> use it
11819  * just because you prefer the appearance of the ruled tree; that's a
11820  * question for the theme. Some themes will draw tree rows in
11821  * alternating colors even when rules are turned off, and users who
11822  * prefer that appearance all the time can choose those themes. You
11823  * should call this function only as a <emphasis>semantic</emphasis>
11824  * hint to the theme engine that your tree makes alternating colors
11825  * useful from a functional standpoint (since it has lots of columns,
11826  * generally).
11827  *
11828  **/
11829 void
11830 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11831                               gboolean      setting)
11832 {
11833   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11834
11835   setting = setting != FALSE;
11836
11837   if (tree_view->priv->has_rules != setting)
11838     {
11839       tree_view->priv->has_rules = setting;
11840       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11841     }
11842
11843   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11844 }
11845
11846 /**
11847  * gtk_tree_view_get_rules_hint
11848  * @tree_view: a #GtkTreeView
11849  *
11850  * Gets the setting set by gtk_tree_view_set_rules_hint().
11851  *
11852  * Return value: %TRUE if rules are useful for the user of this tree
11853  **/
11854 gboolean
11855 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11856 {
11857   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11858
11859   return tree_view->priv->has_rules;
11860 }
11861
11862 /* Public Column functions
11863  */
11864
11865 /**
11866  * gtk_tree_view_append_column:
11867  * @tree_view: A #GtkTreeView.
11868  * @column: The #GtkTreeViewColumn to add.
11869  *
11870  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11871  * mode enabled, then @column must have its "sizing" property set to be
11872  * GTK_TREE_VIEW_COLUMN_FIXED.
11873  *
11874  * Return value: The number of columns in @tree_view after appending.
11875  **/
11876 gint
11877 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11878                              GtkTreeViewColumn *column)
11879 {
11880   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11881   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11882   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11883
11884   return gtk_tree_view_insert_column (tree_view, column, -1);
11885 }
11886
11887 void
11888 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11889 {
11890   GList *columns;
11891
11892   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11893     {
11894       GtkTreeViewColumn *column = columns->data;
11895       GtkWidget *header_widget;
11896
11897       if (gtk_tree_view_column_get_visible (column))
11898         continue;
11899
11900       header_widget = gtk_tree_view_column_get_widget (column);
11901
11902       if (!header_widget)
11903         header_widget = gtk_tree_view_column_get_button (column);
11904
11905       gtk_widget_reset_style (header_widget);
11906     }
11907 }
11908
11909
11910 /**
11911  * gtk_tree_view_remove_column:
11912  * @tree_view: A #GtkTreeView.
11913  * @column: The #GtkTreeViewColumn to remove.
11914  *
11915  * Removes @column from @tree_view.
11916  *
11917  * Return value: The number of columns in @tree_view after removing.
11918  **/
11919 gint
11920 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11921                              GtkTreeViewColumn *column)
11922 {
11923   guint position;
11924
11925   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11926   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11927   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11928
11929   if (tree_view->priv->focus_column == column)
11930     tree_view->priv->focus_column = NULL;
11931
11932   if (tree_view->priv->edited_column == column)
11933     {
11934       gtk_tree_view_stop_editing (tree_view, TRUE);
11935
11936       /* no need to, but just to be sure ... */
11937       tree_view->priv->edited_column = NULL;
11938     }
11939
11940   if (tree_view->priv->expander_column == column)
11941     tree_view->priv->expander_column = NULL;
11942
11943   g_signal_handlers_disconnect_by_func (column,
11944                                         G_CALLBACK (column_sizing_notify),
11945                                         tree_view);
11946
11947   _gtk_tree_view_column_unset_tree_view (column);
11948
11949   position = g_list_index (tree_view->priv->columns, column);
11950
11951   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11952   tree_view->priv->n_columns--;
11953
11954   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11955     {
11956       GList *list;
11957
11958       _gtk_tree_view_column_unrealize_button (column);
11959       for (list = tree_view->priv->columns; list; list = list->next)
11960         {
11961           GtkTreeViewColumn *tmp_column;
11962
11963           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11964           if (gtk_tree_view_column_get_visible (tmp_column))
11965             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11966         }
11967
11968       if (tree_view->priv->n_columns == 0 &&
11969           gtk_tree_view_get_headers_visible (tree_view))
11970         gdk_window_hide (tree_view->priv->header_window);
11971
11972       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11973     }
11974
11975   _gtk_tree_view_reset_header_styles (tree_view);
11976
11977   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11978
11979   g_object_unref (column);
11980   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11981
11982   return tree_view->priv->n_columns;
11983 }
11984
11985 /**
11986  * gtk_tree_view_insert_column:
11987  * @tree_view: A #GtkTreeView.
11988  * @column: The #GtkTreeViewColumn to be inserted.
11989  * @position: The position to insert @column in.
11990  *
11991  * This inserts the @column into the @tree_view at @position.  If @position is
11992  * -1, then the column is inserted at the end. If @tree_view has
11993  * "fixed_height" mode enabled, then @column must have its "sizing" property
11994  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11995  *
11996  * Return value: The number of columns in @tree_view after insertion.
11997  **/
11998 gint
11999 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12000                              GtkTreeViewColumn *column,
12001                              gint               position)
12002 {
12003   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12004   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12005   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12006
12007   if (tree_view->priv->fixed_height_mode)
12008     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12009                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12010
12011   if (position < 0 || position > tree_view->priv->n_columns)
12012     position = tree_view->priv->n_columns;
12013
12014   g_object_ref_sink (column);
12015
12016   if (tree_view->priv->n_columns == 0 &&
12017       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12018       gtk_tree_view_get_headers_visible (tree_view))
12019     {
12020       gdk_window_show (tree_view->priv->header_window);
12021     }
12022
12023   g_signal_connect (column, "notify::sizing",
12024                     G_CALLBACK (column_sizing_notify), tree_view);
12025
12026   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12027                                             column, position);
12028   tree_view->priv->n_columns++;
12029
12030   _gtk_tree_view_column_set_tree_view (column, tree_view);
12031
12032   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12033     {
12034       GList *list;
12035
12036       _gtk_tree_view_column_realize_button (column);
12037
12038       for (list = tree_view->priv->columns; list; list = list->next)
12039         {
12040           column = GTK_TREE_VIEW_COLUMN (list->data);
12041           if (gtk_tree_view_column_get_visible (column))
12042             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12043         }
12044       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12045     }
12046
12047   _gtk_tree_view_reset_header_styles (tree_view);
12048
12049   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12050
12051   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12052
12053   return tree_view->priv->n_columns;
12054 }
12055
12056 /**
12057  * gtk_tree_view_insert_column_with_attributes:
12058  * @tree_view: A #GtkTreeView
12059  * @position: The position to insert the new column in
12060  * @title: The title to set the header to
12061  * @cell: The #GtkCellRenderer
12062  * @...: A %NULL-terminated list of attributes
12063  *
12064  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12065  * @position.  If @position is -1, then the newly created column is inserted at
12066  * the end.  The column is initialized with the attributes given. If @tree_view
12067  * has "fixed_height" mode enabled, then the new column will have its sizing
12068  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12069  *
12070  * Return value: The number of columns in @tree_view after insertion.
12071  **/
12072 gint
12073 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12074                                              gint             position,
12075                                              const gchar     *title,
12076                                              GtkCellRenderer *cell,
12077                                              ...)
12078 {
12079   GtkTreeViewColumn *column;
12080   gchar *attribute;
12081   va_list args;
12082   gint column_id;
12083
12084   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12085
12086   column = gtk_tree_view_column_new ();
12087   if (tree_view->priv->fixed_height_mode)
12088     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12089
12090   gtk_tree_view_column_set_title (column, title);
12091   gtk_tree_view_column_pack_start (column, cell, TRUE);
12092
12093   va_start (args, cell);
12094
12095   attribute = va_arg (args, gchar *);
12096
12097   while (attribute != NULL)
12098     {
12099       column_id = va_arg (args, gint);
12100       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12101       attribute = va_arg (args, gchar *);
12102     }
12103
12104   va_end (args);
12105
12106   return gtk_tree_view_insert_column (tree_view, column, position);
12107 }
12108
12109 /**
12110  * gtk_tree_view_insert_column_with_data_func:
12111  * @tree_view: a #GtkTreeView
12112  * @position: Position to insert, -1 for append
12113  * @title: column title
12114  * @cell: cell renderer for column
12115  * @func: function to set attributes of cell renderer
12116  * @data: data for @func
12117  * @dnotify: destroy notifier for @data
12118  *
12119  * Convenience function that inserts a new column into the #GtkTreeView
12120  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12121  * attributes (normally using data from the model). See also
12122  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12123  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12124  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12125  *
12126  * Return value: number of columns in the tree view post-insert
12127  **/
12128 gint
12129 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12130                                              gint                       position,
12131                                              const gchar               *title,
12132                                              GtkCellRenderer           *cell,
12133                                              GtkTreeCellDataFunc        func,
12134                                              gpointer                   data,
12135                                              GDestroyNotify             dnotify)
12136 {
12137   GtkTreeViewColumn *column;
12138
12139   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12140
12141   column = gtk_tree_view_column_new ();
12142   if (tree_view->priv->fixed_height_mode)
12143     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12144
12145   gtk_tree_view_column_set_title (column, title);
12146   gtk_tree_view_column_pack_start (column, cell, TRUE);
12147   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12148
12149   return gtk_tree_view_insert_column (tree_view, column, position);
12150 }
12151
12152 /**
12153  * gtk_tree_view_get_n_columns:
12154  * @tree_view: a #GtkTreeView
12155  *
12156  * Queries the number of columns in the given @tree_view.
12157  *
12158  * Returns: The number of columns in the @tree_view
12159  *
12160  * Since: 3.4
12161  **/
12162 guint
12163 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12164 {
12165   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12166
12167   return tree_view->priv->n_columns;
12168 }
12169
12170 /**
12171  * gtk_tree_view_get_column:
12172  * @tree_view: A #GtkTreeView.
12173  * @n: The position of the column, counting from 0.
12174  *
12175  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12176  *
12177  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12178  *     position is outside the range of columns.
12179  **/
12180 GtkTreeViewColumn *
12181 gtk_tree_view_get_column (GtkTreeView *tree_view,
12182                           gint         n)
12183 {
12184   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12185
12186   if (n < 0 || n >= tree_view->priv->n_columns)
12187     return NULL;
12188
12189   if (tree_view->priv->columns == NULL)
12190     return NULL;
12191
12192   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12193 }
12194
12195 /**
12196  * gtk_tree_view_get_columns:
12197  * @tree_view: A #GtkTreeView
12198  *
12199  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12200  * The returned list must be freed with g_list_free ().
12201  *
12202  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12203  **/
12204 GList *
12205 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12206 {
12207   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12208
12209   return g_list_copy (tree_view->priv->columns);
12210 }
12211
12212 /**
12213  * gtk_tree_view_move_column_after:
12214  * @tree_view: A #GtkTreeView
12215  * @column: The #GtkTreeViewColumn to be moved.
12216  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12217  *
12218  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12219  * @column is placed in the first position.
12220  **/
12221 void
12222 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12223                                  GtkTreeViewColumn *column,
12224                                  GtkTreeViewColumn *base_column)
12225 {
12226   GList *column_list_el, *base_el = NULL;
12227
12228   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12229
12230   column_list_el = g_list_find (tree_view->priv->columns, column);
12231   g_return_if_fail (column_list_el != NULL);
12232
12233   if (base_column)
12234     {
12235       base_el = g_list_find (tree_view->priv->columns, base_column);
12236       g_return_if_fail (base_el != NULL);
12237     }
12238
12239   if (column_list_el->prev == base_el)
12240     return;
12241
12242   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12243   if (base_el == NULL)
12244     {
12245       column_list_el->prev = NULL;
12246       column_list_el->next = tree_view->priv->columns;
12247       if (column_list_el->next)
12248         column_list_el->next->prev = column_list_el;
12249       tree_view->priv->columns = column_list_el;
12250     }
12251   else
12252     {
12253       column_list_el->prev = base_el;
12254       column_list_el->next = base_el->next;
12255       if (column_list_el->next)
12256         column_list_el->next->prev = column_list_el;
12257       base_el->next = column_list_el;
12258     }
12259
12260   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12261     {
12262       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12263       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12264     }
12265
12266   _gtk_tree_view_reset_header_styles (tree_view);
12267
12268   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12269
12270   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12271 }
12272
12273 /**
12274  * gtk_tree_view_set_expander_column:
12275  * @tree_view: A #GtkTreeView
12276  * @column: %NULL, or the column to draw the expander arrow at.
12277  *
12278  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12279  * If @column is %NULL, then the expander arrow is always at the first
12280  * visible column.
12281  *
12282  * If you do not want expander arrow to appear in your tree, set the
12283  * expander column to a hidden column.
12284  **/
12285 void
12286 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12287                                    GtkTreeViewColumn *column)
12288 {
12289   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12290   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12291   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12292
12293   if (tree_view->priv->expander_column != column)
12294     {
12295       tree_view->priv->expander_column = column;
12296       g_object_notify (G_OBJECT (tree_view), "expander-column");
12297     }
12298 }
12299
12300 /**
12301  * gtk_tree_view_get_expander_column:
12302  * @tree_view: A #GtkTreeView
12303  *
12304  * Returns the column that is the current expander column.
12305  * This column has the expander arrow drawn next to it.
12306  *
12307  * Return value: (transfer none): The expander column.
12308  **/
12309 GtkTreeViewColumn *
12310 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12311 {
12312   GList *list;
12313
12314   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12315
12316   for (list = tree_view->priv->columns; list; list = list->next)
12317     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12318       return (GtkTreeViewColumn *) list->data;
12319   return NULL;
12320 }
12321
12322
12323 /**
12324  * gtk_tree_view_set_column_drag_function:
12325  * @tree_view: A #GtkTreeView.
12326  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12327  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12328  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12329  *
12330  * Sets a user function for determining where a column may be dropped when
12331  * dragged.  This function is called on every column pair in turn at the
12332  * beginning of a column drag to determine where a drop can take place.  The
12333  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12334  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12335  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12336  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12337  * @tree_view reverts to the default behavior of allowing all columns to be
12338  * dropped everywhere.
12339  **/
12340 void
12341 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12342                                         GtkTreeViewColumnDropFunc  func,
12343                                         gpointer                   user_data,
12344                                         GDestroyNotify             destroy)
12345 {
12346   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12347
12348   if (tree_view->priv->column_drop_func_data_destroy)
12349     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12350
12351   tree_view->priv->column_drop_func = func;
12352   tree_view->priv->column_drop_func_data = user_data;
12353   tree_view->priv->column_drop_func_data_destroy = destroy;
12354 }
12355
12356 /**
12357  * gtk_tree_view_scroll_to_point:
12358  * @tree_view: a #GtkTreeView
12359  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12360  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12361  *
12362  * Scrolls the tree view such that the top-left corner of the visible
12363  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12364  * in tree coordinates.  The @tree_view must be realized before
12365  * this function is called.  If it isn't, you probably want to be
12366  * using gtk_tree_view_scroll_to_cell().
12367  *
12368  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12369  **/
12370 void
12371 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12372                                gint         tree_x,
12373                                gint         tree_y)
12374 {
12375   GtkAdjustment *hadj;
12376   GtkAdjustment *vadj;
12377
12378   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12379   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12380
12381   hadj = tree_view->priv->hadjustment;
12382   vadj = tree_view->priv->vadjustment;
12383
12384   if (tree_x != -1)
12385     gtk_adjustment_set_value (hadj, tree_x);
12386   if (tree_y != -1)
12387     gtk_adjustment_set_value (vadj, tree_y);
12388 }
12389
12390 /**
12391  * gtk_tree_view_scroll_to_cell:
12392  * @tree_view: A #GtkTreeView.
12393  * @path: (allow-none): The path of the row to move to, or %NULL.
12394  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12395  * @use_align: whether to use alignment arguments, or %FALSE.
12396  * @row_align: The vertical alignment of the row specified by @path.
12397  * @col_align: The horizontal alignment of the column specified by @column.
12398  *
12399  * Moves the alignments of @tree_view to the position specified by @column and
12400  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12401  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12402  * or @path need to be non-%NULL.  @row_align determines where the row is
12403  * placed, and @col_align determines where @column is placed.  Both are expected
12404  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12405  * right/bottom alignment, 0.5 means center.
12406  *
12407  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12408  * tree does the minimum amount of work to scroll the cell onto the screen.
12409  * This means that the cell will be scrolled to the edge closest to its current
12410  * position.  If the cell is currently visible on the screen, nothing is done.
12411  *
12412  * This function only works if the model is set, and @path is a valid row on the
12413  * model.  If the model changes before the @tree_view is realized, the centered
12414  * path will be modified to reflect this change.
12415  **/
12416 void
12417 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12418                               GtkTreePath       *path,
12419                               GtkTreeViewColumn *column,
12420                               gboolean           use_align,
12421                               gfloat             row_align,
12422                               gfloat             col_align)
12423 {
12424   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12425   g_return_if_fail (tree_view->priv->model != NULL);
12426   g_return_if_fail (tree_view->priv->tree != NULL);
12427   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12428   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12429   g_return_if_fail (path != NULL || column != NULL);
12430
12431 #if 0
12432   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12433            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12434 #endif
12435   row_align = CLAMP (row_align, 0.0, 1.0);
12436   col_align = CLAMP (col_align, 0.0, 1.0);
12437
12438
12439   /* Note: Despite the benefits that come from having one code path for the
12440    * scrolling code, we short-circuit validate_visible_area's immplementation as
12441    * it is much slower than just going to the point.
12442    */
12443   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12444       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12445       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12446       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12447     {
12448       if (tree_view->priv->scroll_to_path)
12449         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12450
12451       tree_view->priv->scroll_to_path = NULL;
12452       tree_view->priv->scroll_to_column = NULL;
12453
12454       if (path)
12455         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12456       if (column)
12457         tree_view->priv->scroll_to_column = column;
12458       tree_view->priv->scroll_to_use_align = use_align;
12459       tree_view->priv->scroll_to_row_align = row_align;
12460       tree_view->priv->scroll_to_col_align = col_align;
12461
12462       install_presize_handler (tree_view);
12463     }
12464   else
12465     {
12466       GdkRectangle cell_rect;
12467       GdkRectangle vis_rect;
12468       gint dest_x, dest_y;
12469
12470       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12471       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12472
12473       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12474
12475       dest_x = vis_rect.x;
12476       dest_y = vis_rect.y;
12477
12478       if (column)
12479         {
12480           if (use_align)
12481             {
12482               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12483             }
12484           else
12485             {
12486               if (cell_rect.x < vis_rect.x)
12487                 dest_x = cell_rect.x;
12488               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12489                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12490             }
12491         }
12492
12493       if (path)
12494         {
12495           if (use_align)
12496             {
12497               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12498               dest_y = MAX (dest_y, 0);
12499             }
12500           else
12501             {
12502               if (cell_rect.y < vis_rect.y)
12503                 dest_y = cell_rect.y;
12504               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12505                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12506             }
12507         }
12508
12509       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12510     }
12511 }
12512
12513 /**
12514  * gtk_tree_view_row_activated:
12515  * @tree_view: A #GtkTreeView
12516  * @path: The #GtkTreePath to be activated.
12517  * @column: The #GtkTreeViewColumn to be activated.
12518  *
12519  * Activates the cell determined by @path and @column.
12520  **/
12521 void
12522 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12523                              GtkTreePath       *path,
12524                              GtkTreeViewColumn *column)
12525 {
12526   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12527
12528   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12529 }
12530
12531
12532 static void
12533 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12534                                           GtkRBNode *node,
12535                                           gpointer   data)
12536 {
12537   GtkTreeView *tree_view = data;
12538
12539   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12540       node->children)
12541     {
12542       GtkTreePath *path;
12543       GtkTreeIter iter;
12544
12545       path = _gtk_tree_view_find_path (tree_view, tree, node);
12546       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12547
12548       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12549
12550       gtk_tree_path_free (path);
12551     }
12552
12553   if (node->children)
12554     _gtk_rbtree_traverse (node->children,
12555                           node->children->root,
12556                           G_PRE_ORDER,
12557                           gtk_tree_view_expand_all_emission_helper,
12558                           tree_view);
12559 }
12560
12561 /**
12562  * gtk_tree_view_expand_all:
12563  * @tree_view: A #GtkTreeView.
12564  *
12565  * Recursively expands all nodes in the @tree_view.
12566  **/
12567 void
12568 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12569 {
12570   GtkTreePath *path;
12571   GtkRBTree *tree;
12572   GtkRBNode *node;
12573
12574   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12575
12576   if (tree_view->priv->tree == NULL)
12577     return;
12578
12579   path = gtk_tree_path_new_first ();
12580   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12581
12582   while (node)
12583     {
12584       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12585       node = _gtk_rbtree_next (tree, node);
12586       gtk_tree_path_next (path);
12587   }
12588
12589   gtk_tree_path_free (path);
12590 }
12591
12592 /**
12593  * gtk_tree_view_collapse_all:
12594  * @tree_view: A #GtkTreeView.
12595  *
12596  * Recursively collapses all visible, expanded nodes in @tree_view.
12597  **/
12598 void
12599 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12600 {
12601   GtkRBTree *tree;
12602   GtkRBNode *node;
12603   GtkTreePath *path;
12604   gint *indices;
12605
12606   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12607
12608   if (tree_view->priv->tree == NULL)
12609     return;
12610
12611   path = gtk_tree_path_new ();
12612   gtk_tree_path_down (path);
12613   indices = gtk_tree_path_get_indices (path);
12614
12615   tree = tree_view->priv->tree;
12616   node = tree->root;
12617   while (node && node->left != tree->nil)
12618     node = node->left;
12619
12620   while (node)
12621     {
12622       if (node->children)
12623         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12624       indices[0]++;
12625       node = _gtk_rbtree_next (tree, node);
12626     }
12627
12628   gtk_tree_path_free (path);
12629 }
12630
12631 /**
12632  * gtk_tree_view_expand_to_path:
12633  * @tree_view: A #GtkTreeView.
12634  * @path: path to a row.
12635  *
12636  * Expands the row at @path. This will also expand all parent rows of
12637  * @path as necessary.
12638  *
12639  * Since: 2.2
12640  **/
12641 void
12642 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12643                               GtkTreePath *path)
12644 {
12645   gint i, depth;
12646   gint *indices;
12647   GtkTreePath *tmp;
12648
12649   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12650   g_return_if_fail (path != NULL);
12651
12652   depth = gtk_tree_path_get_depth (path);
12653   indices = gtk_tree_path_get_indices (path);
12654
12655   tmp = gtk_tree_path_new ();
12656   g_return_if_fail (tmp != NULL);
12657
12658   for (i = 0; i < depth; i++)
12659     {
12660       gtk_tree_path_append_index (tmp, indices[i]);
12661       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12662     }
12663
12664   gtk_tree_path_free (tmp);
12665 }
12666
12667 /* FIXME the bool return values for expand_row and collapse_row are
12668  * not analagous; they should be TRUE if the row had children and
12669  * was not already in the requested state.
12670  */
12671
12672
12673 static gboolean
12674 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12675                                GtkTreePath *path,
12676                                GtkRBTree   *tree,
12677                                GtkRBNode   *node,
12678                                gboolean     open_all,
12679                                gboolean     animate)
12680 {
12681   GtkTreeIter iter;
12682   GtkTreeIter temp;
12683   gboolean expand;
12684
12685   if (animate)
12686     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12687                   "gtk-enable-animations", &animate,
12688                   NULL);
12689
12690   remove_auto_expand_timeout (tree_view);
12691
12692   if (node->children && !open_all)
12693     return FALSE;
12694
12695   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12696     return FALSE;
12697
12698   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12699   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12700     return FALSE;
12701
12702
12703    if (node->children && open_all)
12704     {
12705       gboolean retval = FALSE;
12706       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12707
12708       gtk_tree_path_append_index (tmp_path, 0);
12709       tree = node->children;
12710       node = tree->root;
12711       while (node->left != tree->nil)
12712         node = node->left;
12713       /* try to expand the children */
12714       do
12715         {
12716          gboolean t;
12717          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12718                                             TRUE, animate);
12719          if (t)
12720            retval = TRUE;
12721
12722          gtk_tree_path_next (tmp_path);
12723          node = _gtk_rbtree_next (tree, node);
12724        }
12725       while (node != NULL);
12726
12727       gtk_tree_path_free (tmp_path);
12728
12729       return retval;
12730     }
12731
12732   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12733
12734   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12735     return FALSE;
12736
12737   if (expand)
12738     return FALSE;
12739
12740   node->children = _gtk_rbtree_new ();
12741   node->children->parent_tree = tree;
12742   node->children->parent_node = node;
12743
12744   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12745
12746   gtk_tree_view_build_tree (tree_view,
12747                             node->children,
12748                             &temp,
12749                             gtk_tree_path_get_depth (path) + 1,
12750                             open_all);
12751
12752   if (animate)
12753     {
12754       GtkStyleContext *context;
12755
12756       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12757
12758       gtk_style_context_save (context);
12759       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12760
12761       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12762                                              node, GTK_STATE_ACTIVE, TRUE);
12763
12764       _gtk_style_context_invalidate_animation_areas (context);
12765       gtk_style_context_restore (context);
12766     }
12767
12768   install_presize_handler (tree_view);
12769
12770   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12771   if (open_all && node->children)
12772     {
12773       _gtk_rbtree_traverse (node->children,
12774                             node->children->root,
12775                             G_PRE_ORDER,
12776                             gtk_tree_view_expand_all_emission_helper,
12777                             tree_view);
12778     }
12779   return TRUE;
12780 }
12781
12782
12783 /**
12784  * gtk_tree_view_expand_row:
12785  * @tree_view: a #GtkTreeView
12786  * @path: path to a row
12787  * @open_all: whether to recursively expand, or just expand immediate children
12788  *
12789  * Opens the row so its children are visible.
12790  *
12791  * Return value: %TRUE if the row existed and had children
12792  **/
12793 gboolean
12794 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12795                           GtkTreePath *path,
12796                           gboolean     open_all)
12797 {
12798   GtkRBTree *tree;
12799   GtkRBNode *node;
12800
12801   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12802   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12803   g_return_val_if_fail (path != NULL, FALSE);
12804
12805   if (_gtk_tree_view_find_node (tree_view,
12806                                 path,
12807                                 &tree,
12808                                 &node))
12809     return FALSE;
12810
12811   if (tree != NULL)
12812     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12813   else
12814     return FALSE;
12815 }
12816
12817 static gboolean
12818 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12819                                  GtkTreePath *path,
12820                                  GtkRBTree   *tree,
12821                                  GtkRBNode   *node,
12822                                  gboolean     animate)
12823 {
12824   GtkTreeIter iter;
12825   GtkTreeIter children;
12826   gboolean collapse;
12827   gint x, y;
12828   GList *list;
12829   GdkWindow *child;
12830
12831   if (animate)
12832     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12833                   "gtk-enable-animations", &animate,
12834                   NULL);
12835
12836   remove_auto_expand_timeout (tree_view);
12837
12838   if (node->children == NULL)
12839     return FALSE;
12840   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12841
12842   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12843
12844   if (collapse)
12845     return FALSE;
12846
12847   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12848    * a chance to prelight the correct node below */
12849
12850   if (tree_view->priv->prelight_tree)
12851     {
12852       GtkRBTree *parent_tree;
12853       GtkRBNode *parent_node;
12854
12855       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12856       parent_node = tree_view->priv->prelight_tree->parent_node;
12857       while (parent_tree)
12858         {
12859           if (parent_tree == tree && parent_node == node)
12860             {
12861               ensure_unprelighted (tree_view);
12862               break;
12863             }
12864           parent_node = parent_tree->parent_node;
12865           parent_tree = parent_tree->parent_tree;
12866         }
12867     }
12868
12869   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12870
12871   for (list = tree_view->priv->columns; list; list = list->next)
12872     {
12873       GtkTreeViewColumn *column = list->data;
12874
12875       if (gtk_tree_view_column_get_visible (column) == FALSE)
12876         continue;
12877       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12878         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12879     }
12880
12881   if (tree_view->priv->destroy_count_func)
12882     {
12883       GtkTreePath *child_path;
12884       gint child_count = 0;
12885       child_path = gtk_tree_path_copy (path);
12886       gtk_tree_path_down (child_path);
12887       if (node->children)
12888         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12889       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12890       gtk_tree_path_free (child_path);
12891     }
12892
12893   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12894     {
12895       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12896
12897       if (gtk_tree_path_is_ancestor (path, cursor_path))
12898         {
12899           gtk_tree_row_reference_free (tree_view->priv->cursor);
12900           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12901                                                                       tree_view->priv->model,
12902                                                                       path);
12903         }
12904       gtk_tree_path_free (cursor_path);
12905     }
12906
12907   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12908     {
12909       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12910       if (gtk_tree_path_is_ancestor (path, anchor_path))
12911         {
12912           gtk_tree_row_reference_free (tree_view->priv->anchor);
12913           tree_view->priv->anchor = NULL;
12914         }
12915       gtk_tree_path_free (anchor_path);
12916     }
12917
12918   /* Stop a pending double click */
12919   tree_view->priv->last_button_x = -1;
12920   tree_view->priv->last_button_y = -1;
12921
12922   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12923
12924   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12925     {
12926       _gtk_rbtree_remove (node->children);
12927       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12928     }
12929   else
12930     _gtk_rbtree_remove (node->children);
12931
12932   if (animate)
12933     {
12934       GtkStyleContext *context;
12935
12936       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12937
12938       gtk_style_context_save (context);
12939       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12940
12941       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12942                                              node, GTK_STATE_ACTIVE, FALSE);
12943
12944       _gtk_style_context_invalidate_animation_areas (context);
12945       gtk_style_context_restore (context);
12946     }
12947
12948   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12949     {
12950       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12951     }
12952
12953   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12954
12955   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12956     {
12957       /* now that we've collapsed all rows, we want to try to set the prelight
12958        * again. To do this, we fake a motion event and send it to ourselves. */
12959
12960       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12961                                               gdk_device_manager_get_client_pointer (
12962                                                 gdk_display_get_device_manager (
12963                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12964                                               &x, &y, NULL);
12965       if (child == tree_view->priv->bin_window)
12966         {
12967           GdkEventMotion event;
12968           gint child_x, child_y;
12969
12970           gdk_window_get_position (child, &child_x, &child_y);
12971
12972           event.window = tree_view->priv->bin_window;
12973           event.x = x - child_x;
12974           event.y = y - child_y;
12975
12976           /* despite the fact this isn't a real event, I'm almost positive it will
12977            * never trigger a drag event.  maybe_drag is the only function that uses
12978            * more than just event.x and event.y. */
12979           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12980         }
12981     }
12982
12983   return TRUE;
12984 }
12985
12986 /**
12987  * gtk_tree_view_collapse_row:
12988  * @tree_view: a #GtkTreeView
12989  * @path: path to a row in the @tree_view
12990  *
12991  * Collapses a row (hides its child rows, if they exist).
12992  *
12993  * Return value: %TRUE if the row was collapsed.
12994  **/
12995 gboolean
12996 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12997                             GtkTreePath *path)
12998 {
12999   GtkRBTree *tree;
13000   GtkRBNode *node;
13001
13002   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13003   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13004   g_return_val_if_fail (path != NULL, FALSE);
13005
13006   if (_gtk_tree_view_find_node (tree_view,
13007                                 path,
13008                                 &tree,
13009                                 &node))
13010     return FALSE;
13011
13012   if (tree == NULL || node->children == NULL)
13013     return FALSE;
13014
13015   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13016 }
13017
13018 static void
13019 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13020                                         GtkRBTree              *tree,
13021                                         GtkTreePath            *path,
13022                                         GtkTreeViewMappingFunc  func,
13023                                         gpointer                user_data)
13024 {
13025   GtkRBNode *node;
13026
13027   if (tree == NULL || tree->root == NULL)
13028     return;
13029
13030   node = tree->root;
13031
13032   while (node && node->left != tree->nil)
13033     node = node->left;
13034
13035   while (node)
13036     {
13037       if (node->children)
13038         {
13039           (* func) (tree_view, path, user_data);
13040           gtk_tree_path_down (path);
13041           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13042           gtk_tree_path_up (path);
13043         }
13044       gtk_tree_path_next (path);
13045       node = _gtk_rbtree_next (tree, node);
13046     }
13047 }
13048
13049 /**
13050  * gtk_tree_view_map_expanded_rows:
13051  * @tree_view: A #GtkTreeView
13052  * @func: (scope call): A function to be called
13053  * @data: User data to be passed to the function.
13054  *
13055  * Calls @func on all expanded rows.
13056  **/
13057 void
13058 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13059                                  GtkTreeViewMappingFunc  func,
13060                                  gpointer                user_data)
13061 {
13062   GtkTreePath *path;
13063
13064   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13065   g_return_if_fail (func != NULL);
13066
13067   path = gtk_tree_path_new_first ();
13068
13069   gtk_tree_view_map_expanded_rows_helper (tree_view,
13070                                           tree_view->priv->tree,
13071                                           path, func, user_data);
13072
13073   gtk_tree_path_free (path);
13074 }
13075
13076 /**
13077  * gtk_tree_view_row_expanded:
13078  * @tree_view: A #GtkTreeView.
13079  * @path: A #GtkTreePath to test expansion state.
13080  *
13081  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13082  *
13083  * Return value: %TRUE if #path is expanded.
13084  **/
13085 gboolean
13086 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13087                             GtkTreePath *path)
13088 {
13089   GtkRBTree *tree;
13090   GtkRBNode *node;
13091
13092   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13093   g_return_val_if_fail (path != NULL, FALSE);
13094
13095   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13096
13097   if (node == NULL)
13098     return FALSE;
13099
13100   return (node->children != NULL);
13101 }
13102
13103 /**
13104  * gtk_tree_view_get_reorderable:
13105  * @tree_view: a #GtkTreeView
13106  *
13107  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13108  * gtk_tree_view_set_reorderable().
13109  *
13110  * Return value: %TRUE if the tree can be reordered.
13111  **/
13112 gboolean
13113 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13114 {
13115   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13116
13117   return tree_view->priv->reorderable;
13118 }
13119
13120 /**
13121  * gtk_tree_view_set_reorderable:
13122  * @tree_view: A #GtkTreeView.
13123  * @reorderable: %TRUE, if the tree can be reordered.
13124  *
13125  * This function is a convenience function to allow you to reorder
13126  * models that support the #GtkTreeDragSourceIface and the
13127  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13128  * these.  If @reorderable is %TRUE, then the user can reorder the
13129  * model by dragging and dropping rows. The developer can listen to
13130  * these changes by connecting to the model's row_inserted and
13131  * row_deleted signals. The reordering is implemented by setting up
13132  * the tree view as a drag source and destination. Therefore, drag and
13133  * drop can not be used in a reorderable view for any other purpose.
13134  *
13135  * This function does not give you any degree of control over the order -- any
13136  * reordering is allowed.  If more control is needed, you should probably
13137  * handle drag and drop manually.
13138  **/
13139 void
13140 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13141                                gboolean     reorderable)
13142 {
13143   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13144
13145   reorderable = reorderable != FALSE;
13146
13147   if (tree_view->priv->reorderable == reorderable)
13148     return;
13149
13150   if (reorderable)
13151     {
13152       const GtkTargetEntry row_targets[] = {
13153         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13154       };
13155
13156       gtk_tree_view_enable_model_drag_source (tree_view,
13157                                               GDK_BUTTON1_MASK,
13158                                               row_targets,
13159                                               G_N_ELEMENTS (row_targets),
13160                                               GDK_ACTION_MOVE);
13161       gtk_tree_view_enable_model_drag_dest (tree_view,
13162                                             row_targets,
13163                                             G_N_ELEMENTS (row_targets),
13164                                             GDK_ACTION_MOVE);
13165     }
13166   else
13167     {
13168       gtk_tree_view_unset_rows_drag_source (tree_view);
13169       gtk_tree_view_unset_rows_drag_dest (tree_view);
13170     }
13171
13172   tree_view->priv->reorderable = reorderable;
13173
13174   g_object_notify (G_OBJECT (tree_view), "reorderable");
13175 }
13176
13177 static void
13178 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13179                                GtkTreePath     *path,
13180                                gboolean         clear_and_select,
13181                                gboolean         clamp_node)
13182 {
13183   GtkRBTree *tree = NULL;
13184   GtkRBNode *node = NULL;
13185
13186   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13187     {
13188       GtkTreePath *cursor_path;
13189       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13190       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
13191       gtk_tree_path_free (cursor_path);
13192     }
13193
13194   gtk_tree_row_reference_free (tree_view->priv->cursor);
13195   tree_view->priv->cursor = NULL;
13196
13197   /* One cannot set the cursor on a separator.   Also, if
13198    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13199    * before finding the tree and node belonging to path.  The
13200    * path maps to a non-existing path and we will silently bail out.
13201    * We unset tree and node to avoid further processing.
13202    */
13203   if (!row_is_separator (tree_view, NULL, path)
13204       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
13205     {
13206       tree_view->priv->cursor =
13207           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
13208                                             tree_view->priv->model,
13209                                             path);
13210     }
13211   else
13212     {
13213       tree = NULL;
13214       node = NULL;
13215     }
13216
13217   if (tree != NULL)
13218     {
13219       GtkRBTree *new_tree = NULL;
13220       GtkRBNode *new_node = NULL;
13221
13222       if (clear_and_select && !tree_view->priv->modify_selection_pressed)
13223         {
13224           GtkTreeSelectMode mode = 0;
13225
13226           if (tree_view->priv->extend_selection_pressed)
13227             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13228
13229           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13230                                                     node, tree, path, mode,
13231                                                     FALSE);
13232         }
13233
13234       /* We have to re-find tree and node here again, somebody might have
13235        * cleared the node or the whole tree in the GtkTreeSelection::changed
13236        * callback. If the nodes differ we bail out here.
13237        */
13238       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13239
13240       if (tree != new_tree || node != new_node)
13241         return;
13242
13243       if (clamp_node)
13244         {
13245           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
13246           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13247         }
13248     }
13249
13250   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13251 }
13252
13253 /**
13254  * gtk_tree_view_get_cursor:
13255  * @tree_view: A #GtkTreeView
13256  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13257  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13258  *
13259  * Fills in @path and @focus_column with the current path and focus column.  If
13260  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13261  * currently has focus, then *@focus_column will be %NULL.
13262  *
13263  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13264  * you are done with it.
13265  **/
13266 void
13267 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13268                           GtkTreePath       **path,
13269                           GtkTreeViewColumn **focus_column)
13270 {
13271   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13272
13273   if (path)
13274     {
13275       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13276         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13277       else
13278         *path = NULL;
13279     }
13280
13281   if (focus_column)
13282     {
13283       *focus_column = tree_view->priv->focus_column;
13284     }
13285 }
13286
13287 /**
13288  * gtk_tree_view_set_cursor:
13289  * @tree_view: A #GtkTreeView
13290  * @path: A #GtkTreePath
13291  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13292  * @start_editing: %TRUE if the specified cell should start being edited.
13293  *
13294  * Sets the current keyboard focus to be at @path, and selects it.  This is
13295  * useful when you want to focus the user's attention on a particular row.  If
13296  * @focus_column is not %NULL, then focus is given to the column specified by
13297  * it. Additionally, if @focus_column is specified, and @start_editing is
13298  * %TRUE, then editing should be started in the specified cell.
13299  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13300  * in order to give keyboard focus to the widget.  Please note that editing
13301  * can only happen when the widget is realized.
13302  *
13303  * If @path is invalid for @model, the current cursor (if any) will be unset
13304  * and the function will return without failing.
13305  **/
13306 void
13307 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13308                           GtkTreePath       *path,
13309                           GtkTreeViewColumn *focus_column,
13310                           gboolean           start_editing)
13311 {
13312   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13313                                     NULL, start_editing);
13314 }
13315
13316 /**
13317  * gtk_tree_view_set_cursor_on_cell:
13318  * @tree_view: A #GtkTreeView
13319  * @path: A #GtkTreePath
13320  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13321  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13322  * @start_editing: %TRUE if the specified cell should start being edited.
13323  *
13324  * Sets the current keyboard focus to be at @path, and selects it.  This is
13325  * useful when you want to focus the user's attention on a particular row.  If
13326  * @focus_column is not %NULL, then focus is given to the column specified by
13327  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13328  * contains 2 or more editable or activatable cells, then focus is given to
13329  * the cell specified by @focus_cell. Additionally, if @focus_column is
13330  * specified, and @start_editing is %TRUE, then editing should be started in
13331  * the specified cell.  This function is often followed by
13332  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13333  * widget.  Please note that editing can only happen when the widget is
13334  * realized.
13335  *
13336  * If @path is invalid for @model, the current cursor (if any) will be unset
13337  * and the function will return without failing.
13338  *
13339  * Since: 2.2
13340  **/
13341 void
13342 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13343                                   GtkTreePath       *path,
13344                                   GtkTreeViewColumn *focus_column,
13345                                   GtkCellRenderer   *focus_cell,
13346                                   gboolean           start_editing)
13347 {
13348   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13349   g_return_if_fail (path != NULL);
13350   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13351
13352   if (!tree_view->priv->model)
13353     return;
13354
13355   if (focus_cell)
13356     {
13357       g_return_if_fail (focus_column);
13358       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13359     }
13360
13361   /* cancel the current editing, if it exists */
13362   if (tree_view->priv->edited_column &&
13363       gtk_cell_area_get_edit_widget
13364       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13365     gtk_tree_view_stop_editing (tree_view, TRUE);
13366
13367   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
13368
13369   if (focus_column &&
13370       gtk_tree_view_column_get_visible (focus_column))
13371     {
13372       GList *list;
13373       gboolean column_in_tree = FALSE;
13374
13375       for (list = tree_view->priv->columns; list; list = list->next)
13376         if (list->data == focus_column)
13377           {
13378             column_in_tree = TRUE;
13379             break;
13380           }
13381       g_return_if_fail (column_in_tree);
13382       tree_view->priv->focus_column = focus_column;
13383       if (focus_cell)
13384         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13385       if (start_editing)
13386         gtk_tree_view_start_editing (tree_view, path, TRUE);
13387     }
13388 }
13389
13390 /**
13391  * gtk_tree_view_get_bin_window:
13392  * @tree_view: A #GtkTreeView
13393  *
13394  * Returns the window that @tree_view renders to.
13395  * This is used primarily to compare to <literal>event->window</literal>
13396  * to confirm that the event on @tree_view is on the right window.
13397  *
13398  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13399  *     hasn't been realized yet
13400  **/
13401 GdkWindow *
13402 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13403 {
13404   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13405
13406   return tree_view->priv->bin_window;
13407 }
13408
13409 /**
13410  * gtk_tree_view_get_path_at_pos:
13411  * @tree_view: A #GtkTreeView.
13412  * @x: The x position to be identified (relative to bin_window).
13413  * @y: The y position to be identified (relative to bin_window).
13414  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13415  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13416  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13417  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13418  *
13419  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13420  * (please see gtk_tree_view_get_bin_window()).
13421  * That is, @x and @y are relative to an events coordinates. @x and @y must
13422  * come from an event on the @tree_view only where <literal>event->window ==
13423  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13424  * things like popup menus. If @path is non-%NULL, then it will be filled
13425  * with the #GtkTreePath at that point.  This path should be freed with
13426  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13427  * with the column at that point.  @cell_x and @cell_y return the coordinates
13428  * relative to the cell background (i.e. the @background_area passed to
13429  * gtk_cell_renderer_render()).  This function is only meaningful if
13430  * @tree_view is realized.  Therefore this function will always return %FALSE
13431  * if @tree_view is not realized or does not have a model.
13432  *
13433  * For converting widget coordinates (eg. the ones you get from
13434  * GtkWidget::query-tooltip), please see
13435  * gtk_tree_view_convert_widget_to_bin_window_coords().
13436  *
13437  * Return value: %TRUE if a row exists at that coordinate.
13438  **/
13439 gboolean
13440 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13441                                gint                x,
13442                                gint                y,
13443                                GtkTreePath       **path,
13444                                GtkTreeViewColumn **column,
13445                                gint               *cell_x,
13446                                gint               *cell_y)
13447 {
13448   GtkRBTree *tree;
13449   GtkRBNode *node;
13450   gint y_offset;
13451
13452   g_return_val_if_fail (tree_view != NULL, FALSE);
13453
13454   if (path)
13455     *path = NULL;
13456   if (column)
13457     *column = NULL;
13458
13459   if (tree_view->priv->bin_window == NULL)
13460     return FALSE;
13461
13462   if (tree_view->priv->tree == NULL)
13463     return FALSE;
13464
13465   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13466     return FALSE;
13467
13468   if (x < 0 || y < 0)
13469     return FALSE;
13470
13471   if (column || cell_x)
13472     {
13473       GtkTreeViewColumn *tmp_column;
13474       GtkTreeViewColumn *last_column = NULL;
13475       GList *list;
13476       gint remaining_x = x;
13477       gboolean found = FALSE;
13478       gboolean rtl;
13479       gint width;
13480
13481       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13482       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13483            list;
13484            list = (rtl ? list->prev : list->next))
13485         {
13486           tmp_column = list->data;
13487
13488           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13489             continue;
13490
13491           last_column = tmp_column;
13492           width = gtk_tree_view_column_get_width (tmp_column);
13493           if (remaining_x <= width)
13494             {
13495               found = TRUE;
13496
13497               if (column)
13498                 *column = tmp_column;
13499
13500               if (cell_x)
13501                 *cell_x = remaining_x;
13502
13503               break;
13504             }
13505           remaining_x -= width;
13506         }
13507
13508       /* If found is FALSE and there is a last_column, then it the remainder
13509        * space is in that area
13510        */
13511       if (!found)
13512         {
13513           if (last_column)
13514             {
13515               if (column)
13516                 *column = last_column;
13517
13518               if (cell_x)
13519                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13520             }
13521           else
13522             {
13523               return FALSE;
13524             }
13525         }
13526     }
13527
13528   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13529                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13530                                       &tree, &node);
13531
13532   if (tree == NULL)
13533     return FALSE;
13534
13535   if (cell_y)
13536     *cell_y = y_offset;
13537
13538   if (path)
13539     *path = _gtk_tree_view_find_path (tree_view, tree, node);
13540
13541   return TRUE;
13542 }
13543
13544
13545 static inline gint
13546 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13547                                     GtkRBNode   *node,
13548                                     gint         vertical_separator)
13549 {
13550   int height;
13551
13552   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13553    * i.e. just the cells, no spacing.
13554    *
13555    * The cell area height is at least expander_size - vertical_separator.
13556    * For regular nodes, the height is then at least expander_size. We should
13557    * be able to enforce the expander_size minimum here, because this
13558    * function will not be called for irregular (e.g. separator) rows.
13559    */
13560   height = gtk_tree_view_get_row_height (tree_view, node);
13561   if (height < tree_view->priv->expander_size)
13562     height = tree_view->priv->expander_size;
13563
13564   return height - vertical_separator;
13565 }
13566
13567 static inline gint
13568 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13569                                       GtkRBTree   *tree,
13570                                       GtkRBNode   *node,
13571                                       gint         vertical_separator)
13572 {
13573   int offset;
13574
13575   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13576   offset += vertical_separator / 2;
13577
13578   return offset;
13579 }
13580
13581 /**
13582  * gtk_tree_view_get_cell_area:
13583  * @tree_view: a #GtkTreeView
13584  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13585  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13586  * @rect: (out): rectangle to fill with cell rect
13587  *
13588  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13589  * row specified by @path and the column specified by @column.  If @path is
13590  * %NULL, or points to a path not currently displayed, the @y and @height fields
13591  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13592  * fields will be filled with 0.  The sum of all cell rects does not cover the
13593  * entire tree; there are extra pixels in between rows, for example. The
13594  * returned rectangle is equivalent to the @cell_area passed to
13595  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13596  * realized.
13597  **/
13598 void
13599 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13600                              GtkTreePath        *path,
13601                              GtkTreeViewColumn  *column,
13602                              GdkRectangle       *rect)
13603 {
13604   GtkRBTree *tree = NULL;
13605   GtkRBNode *node = NULL;
13606   gint vertical_separator;
13607   gint horizontal_separator;
13608
13609   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13610   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13611   g_return_if_fail (rect != NULL);
13612   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13613   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13614
13615   gtk_widget_style_get (GTK_WIDGET (tree_view),
13616                         "vertical-separator", &vertical_separator,
13617                         "horizontal-separator", &horizontal_separator,
13618                         NULL);
13619
13620   rect->x = 0;
13621   rect->y = 0;
13622   rect->width = 0;
13623   rect->height = 0;
13624
13625   if (column)
13626     {
13627       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13628       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13629     }
13630
13631   if (path)
13632     {
13633       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13634
13635       /* Get vertical coords */
13636       if ((!ret && tree == NULL) || ret)
13637         return;
13638
13639       if (row_is_separator (tree_view, NULL, path))
13640         {
13641           /* There isn't really a "cell area" for separator, so we
13642            * return the y, height values for background area instead.
13643            */
13644           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13645           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13646         }
13647       else
13648         {
13649           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13650                                                           vertical_separator);
13651           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13652                                                              vertical_separator);
13653         }
13654
13655       if (column &&
13656           gtk_tree_view_is_expander_column (tree_view, column))
13657         {
13658           gint depth = gtk_tree_path_get_depth (path);
13659           gboolean rtl;
13660
13661           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13662
13663           if (!rtl)
13664             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13665           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13666
13667           if (gtk_tree_view_draw_expanders (tree_view))
13668             {
13669               if (!rtl)
13670                 rect->x += depth * tree_view->priv->expander_size;
13671               rect->width -= depth * tree_view->priv->expander_size;
13672             }
13673
13674           rect->width = MAX (rect->width, 0);
13675         }
13676     }
13677 }
13678
13679 static inline gint
13680 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13681                               GtkRBNode   *node)
13682 {
13683   int height;
13684
13685   /* The "background" areas of all rows/cells add up to cover the entire tree.
13686    * The background includes all inter-row and inter-cell spacing.
13687    *
13688    * If the row pointed at by node does not have a height set, we default
13689    * to expander_size, which is the minimum height for regular nodes.
13690    * Non-regular nodes (e.g. separators) can have a height set smaller
13691    * than expander_size and should not be overruled here.
13692    */
13693   height = GTK_RBNODE_GET_HEIGHT (node);
13694   if (height <= 0)
13695     height = tree_view->priv->expander_size;
13696
13697   return height;
13698 }
13699
13700 static inline gint
13701 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13702                                 GtkRBTree   *tree,
13703                                 GtkRBNode   *node)
13704 {
13705   int offset;
13706
13707   offset = _gtk_rbtree_node_find_offset (tree, node);
13708
13709   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13710 }
13711
13712 /**
13713  * gtk_tree_view_get_background_area:
13714  * @tree_view: a #GtkTreeView
13715  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13716  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13717  * @rect: (out): rectangle to fill with cell background rect
13718  *
13719  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13720  * row specified by @path and the column specified by @column.  If @path is
13721  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13722  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13723  * fields will be filled with 0.  The returned rectangle is equivalent to the
13724  * @background_area passed to gtk_cell_renderer_render().  These background
13725  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13726  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13727  * itself, excluding surrounding borders and the tree expander area.
13728  *
13729  **/
13730 void
13731 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13732                                    GtkTreePath        *path,
13733                                    GtkTreeViewColumn  *column,
13734                                    GdkRectangle       *rect)
13735 {
13736   GtkRBTree *tree = NULL;
13737   GtkRBNode *node = NULL;
13738
13739   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13740   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13741   g_return_if_fail (rect != NULL);
13742
13743   rect->x = 0;
13744   rect->y = 0;
13745   rect->width = 0;
13746   rect->height = 0;
13747
13748   if (path)
13749     {
13750       /* Get vertical coords */
13751
13752       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13753           tree == NULL)
13754         return;
13755
13756       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13757       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13758     }
13759
13760   if (column)
13761     {
13762       gint x2 = 0;
13763
13764       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13765       rect->width = x2 - rect->x;
13766     }
13767 }
13768
13769 /**
13770  * gtk_tree_view_get_visible_rect:
13771  * @tree_view: a #GtkTreeView
13772  * @visible_rect: (out): rectangle to fill
13773  *
13774  * Fills @visible_rect with the currently-visible region of the
13775  * buffer, in tree coordinates. Convert to bin_window coordinates with
13776  * gtk_tree_view_convert_tree_to_bin_window_coords().
13777  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13778  * scrollable area of the tree.
13779  **/
13780 void
13781 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13782                                 GdkRectangle *visible_rect)
13783 {
13784   GtkAllocation allocation;
13785   GtkWidget *widget;
13786
13787   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13788
13789   widget = GTK_WIDGET (tree_view);
13790
13791   if (visible_rect)
13792     {
13793       gtk_widget_get_allocation (widget, &allocation);
13794       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13795       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13796       visible_rect->width = allocation.width;
13797       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13798     }
13799 }
13800
13801 /**
13802  * gtk_tree_view_convert_widget_to_tree_coords:
13803  * @tree_view: a #GtkTreeView
13804  * @wx: X coordinate relative to the widget
13805  * @wy: Y coordinate relative to the widget
13806  * @tx: (out): return location for tree X coordinate
13807  * @ty: (out): return location for tree Y coordinate
13808  *
13809  * Converts widget coordinates to coordinates for the
13810  * tree (the full scrollable area of the tree).
13811  *
13812  * Since: 2.12
13813  **/
13814 void
13815 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13816                                              gint         wx,
13817                                              gint         wy,
13818                                              gint        *tx,
13819                                              gint        *ty)
13820 {
13821   gint x, y;
13822
13823   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13824
13825   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13826                                                      wx, wy,
13827                                                      &x, &y);
13828   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13829                                                    x, y,
13830                                                    tx, ty);
13831 }
13832
13833 /**
13834  * gtk_tree_view_convert_tree_to_widget_coords:
13835  * @tree_view: a #GtkTreeView
13836  * @tx: X coordinate relative to the tree
13837  * @ty: Y coordinate relative to the tree
13838  * @wx: (out): return location for widget X coordinate
13839  * @wy: (out): return location for widget Y coordinate
13840  *
13841  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13842  * to widget coordinates.
13843  *
13844  * Since: 2.12
13845  **/
13846 void
13847 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13848                                              gint         tx,
13849                                              gint         ty,
13850                                              gint        *wx,
13851                                              gint        *wy)
13852 {
13853   gint x, y;
13854
13855   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13856
13857   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13858                                                    tx, ty,
13859                                                    &x, &y);
13860   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13861                                                      x, y,
13862                                                      wx, wy);
13863 }
13864
13865 /**
13866  * gtk_tree_view_convert_widget_to_bin_window_coords:
13867  * @tree_view: a #GtkTreeView
13868  * @wx: X coordinate relative to the widget
13869  * @wy: Y coordinate relative to the widget
13870  * @bx: (out): return location for bin_window X coordinate
13871  * @by: (out): return location for bin_window Y coordinate
13872  *
13873  * Converts widget coordinates to coordinates for the bin_window
13874  * (see gtk_tree_view_get_bin_window()).
13875  *
13876  * Since: 2.12
13877  **/
13878 void
13879 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13880                                                    gint         wx,
13881                                                    gint         wy,
13882                                                    gint        *bx,
13883                                                    gint        *by)
13884 {
13885   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13886
13887   if (bx)
13888     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13889   if (by)
13890     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13891 }
13892
13893 /**
13894  * gtk_tree_view_convert_bin_window_to_widget_coords:
13895  * @tree_view: a #GtkTreeView
13896  * @bx: bin_window X coordinate
13897  * @by: bin_window Y coordinate
13898  * @wx: (out): return location for widget X coordinate
13899  * @wy: (out): return location for widget Y coordinate
13900  *
13901  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13902  * to widget relative coordinates.
13903  *
13904  * Since: 2.12
13905  **/
13906 void
13907 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13908                                                    gint         bx,
13909                                                    gint         by,
13910                                                    gint        *wx,
13911                                                    gint        *wy)
13912 {
13913   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13914
13915   if (wx)
13916     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13917   if (wy)
13918     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13919 }
13920
13921 /**
13922  * gtk_tree_view_convert_tree_to_bin_window_coords:
13923  * @tree_view: a #GtkTreeView
13924  * @tx: tree X coordinate
13925  * @ty: tree Y coordinate
13926  * @bx: (out): return location for X coordinate relative to bin_window
13927  * @by: (out): return location for Y coordinate relative to bin_window
13928  *
13929  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13930  * to bin_window coordinates.
13931  *
13932  * Since: 2.12
13933  **/
13934 void
13935 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13936                                                  gint         tx,
13937                                                  gint         ty,
13938                                                  gint        *bx,
13939                                                  gint        *by)
13940 {
13941   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13942
13943   if (bx)
13944     *bx = tx;
13945   if (by)
13946     *by = ty - tree_view->priv->dy;
13947 }
13948
13949 /**
13950  * gtk_tree_view_convert_bin_window_to_tree_coords:
13951  * @tree_view: a #GtkTreeView
13952  * @bx: X coordinate relative to bin_window
13953  * @by: Y coordinate relative to bin_window
13954  * @tx: (out): return location for tree X coordinate
13955  * @ty: (out): return location for tree Y coordinate
13956  *
13957  * Converts bin_window coordinates to coordinates for the
13958  * tree (the full scrollable area of the tree).
13959  *
13960  * Since: 2.12
13961  **/
13962 void
13963 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13964                                                  gint         bx,
13965                                                  gint         by,
13966                                                  gint        *tx,
13967                                                  gint        *ty)
13968 {
13969   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13970
13971   if (tx)
13972     *tx = bx;
13973   if (ty)
13974     *ty = by + tree_view->priv->dy;
13975 }
13976
13977
13978
13979 /**
13980  * gtk_tree_view_get_visible_range:
13981  * @tree_view: A #GtkTreeView
13982  * @start_path: (out) (allow-none): Return location for start of region,
13983  *              or %NULL.
13984  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13985  *
13986  * Sets @start_path and @end_path to be the first and last visible path.
13987  * Note that there may be invisible paths in between.
13988  *
13989  * The paths should be freed with gtk_tree_path_free() after use.
13990  *
13991  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13992  *
13993  * Since: 2.8
13994  **/
13995 gboolean
13996 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13997                                  GtkTreePath **start_path,
13998                                  GtkTreePath **end_path)
13999 {
14000   GtkRBTree *tree;
14001   GtkRBNode *node;
14002   gboolean retval;
14003
14004   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14005
14006   if (!tree_view->priv->tree)
14007     return FALSE;
14008
14009   retval = TRUE;
14010
14011   if (start_path)
14012     {
14013       _gtk_rbtree_find_offset (tree_view->priv->tree,
14014                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14015                                &tree, &node);
14016       if (node)
14017         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
14018       else
14019         retval = FALSE;
14020     }
14021
14022   if (end_path)
14023     {
14024       gint y;
14025
14026       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14027         y = tree_view->priv->height - 1;
14028       else
14029         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14030
14031       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14032       if (node)
14033         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
14034       else
14035         retval = FALSE;
14036     }
14037
14038   return retval;
14039 }
14040
14041 /**
14042  * gtk_tree_view_is_blank_at_pos:
14043  * @tree_view: A #GtkTreeView
14044  * @x: The x position to be identified (relative to bin_window)
14045  * @y: The y position to be identified (relative to bin_window)
14046  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14047  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14048  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14049  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14050  *
14051  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14052  * cell content nor an expander arrow is drawn at the location. If so, the
14053  * location can be considered as the background. You might wish to take
14054  * special action on clicks on the background, such as clearing a current
14055  * selection, having a custom context menu or starting rubber banding.
14056  *
14057  * The @x and @y coordinate that are provided must be relative to bin_window
14058  * coordinates.  That is, @x and @y must come from an event on @tree_view
14059  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14060  *
14061  * For converting widget coordinates (eg. the ones you get from
14062  * GtkWidget::query-tooltip), please see
14063  * gtk_tree_view_convert_widget_to_bin_window_coords().
14064  *
14065  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14066  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14067  * gtk_tree_view_get_path_at_pos() for more information.
14068  *
14069  * Return value: %TRUE if the area at the given coordinates is blank,
14070  * %FALSE otherwise.
14071  *
14072  * Since: 3.0
14073  */
14074 gboolean
14075 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14076                                gint                x,
14077                                gint                y,
14078                                GtkTreePath       **path,
14079                                GtkTreeViewColumn **column,
14080                                gint               *cell_x,
14081                                gint               *cell_y)
14082 {
14083   GtkRBTree *tree;
14084   GtkRBNode *node;
14085   GtkTreeIter iter;
14086   GtkTreePath *real_path;
14087   GtkTreeViewColumn *real_column;
14088   GdkRectangle cell_area, background_area;
14089
14090   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14091
14092   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14093                                       &real_path, &real_column,
14094                                       cell_x, cell_y))
14095     /* If there's no path here, it is blank */
14096     return TRUE;
14097
14098   if (path)
14099     *path = real_path;
14100
14101   if (column)
14102     *column = real_column;
14103
14104   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14105   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14106
14107   /* Check if there's an expander arrow at (x, y) */
14108   if (real_column == tree_view->priv->expander_column
14109       && gtk_tree_view_draw_expanders (tree_view))
14110     {
14111       gboolean over_arrow;
14112
14113       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14114
14115       if (over_arrow)
14116         {
14117           if (!path)
14118             gtk_tree_path_free (real_path);
14119           return FALSE;
14120         }
14121     }
14122
14123   /* Otherwise, have the column see if there's a cell at (x, y) */
14124   gtk_tree_view_column_cell_set_cell_data (real_column,
14125                                            tree_view->priv->model,
14126                                            &iter,
14127                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14128                                            node->children ? TRUE : FALSE);
14129
14130   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14131                                      &background_area);
14132   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14133                                &cell_area);
14134
14135   if (!path)
14136     gtk_tree_path_free (real_path);
14137
14138   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14139                                                 &cell_area,
14140                                                 &background_area,
14141                                                 x, y);
14142 }
14143
14144 static void
14145 unset_reorderable (GtkTreeView *tree_view)
14146 {
14147   if (tree_view->priv->reorderable)
14148     {
14149       tree_view->priv->reorderable = FALSE;
14150       g_object_notify (G_OBJECT (tree_view), "reorderable");
14151     }
14152 }
14153
14154 /**
14155  * gtk_tree_view_enable_model_drag_source:
14156  * @tree_view: a #GtkTreeView
14157  * @start_button_mask: Mask of allowed buttons to start drag
14158  * @targets: (array length=n_targets): the table of targets that the drag will support
14159  * @n_targets: the number of items in @targets
14160  * @actions: the bitmask of possible actions for a drag from this
14161  *    widget
14162  *
14163  * Turns @tree_view into a drag source for automatic DND. Calling this
14164  * method sets #GtkTreeView:reorderable to %FALSE.
14165  **/
14166 void
14167 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14168                                         GdkModifierType           start_button_mask,
14169                                         const GtkTargetEntry     *targets,
14170                                         gint                      n_targets,
14171                                         GdkDragAction             actions)
14172 {
14173   TreeViewDragInfo *di;
14174
14175   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14176
14177   gtk_drag_source_set (GTK_WIDGET (tree_view),
14178                        0,
14179                        targets,
14180                        n_targets,
14181                        actions);
14182
14183   di = ensure_info (tree_view);
14184
14185   di->start_button_mask = start_button_mask;
14186   di->source_actions = actions;
14187   di->source_set = TRUE;
14188
14189   unset_reorderable (tree_view);
14190 }
14191
14192 /**
14193  * gtk_tree_view_enable_model_drag_dest:
14194  * @tree_view: a #GtkTreeView
14195  * @targets: (array length=n_targets): the table of targets that
14196  *           the drag will support
14197  * @n_targets: the number of items in @targets
14198  * @actions: the bitmask of possible actions for a drag from this
14199  *    widget
14200  *
14201  * Turns @tree_view into a drop destination for automatic DND. Calling
14202  * this method sets #GtkTreeView:reorderable to %FALSE.
14203  **/
14204 void
14205 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14206                                       const GtkTargetEntry     *targets,
14207                                       gint                      n_targets,
14208                                       GdkDragAction             actions)
14209 {
14210   TreeViewDragInfo *di;
14211
14212   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14213
14214   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14215                      0,
14216                      targets,
14217                      n_targets,
14218                      actions);
14219
14220   di = ensure_info (tree_view);
14221   di->dest_set = TRUE;
14222
14223   unset_reorderable (tree_view);
14224 }
14225
14226 /**
14227  * gtk_tree_view_unset_rows_drag_source:
14228  * @tree_view: a #GtkTreeView
14229  *
14230  * Undoes the effect of
14231  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14232  * #GtkTreeView:reorderable to %FALSE.
14233  **/
14234 void
14235 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14236 {
14237   TreeViewDragInfo *di;
14238
14239   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14240
14241   di = get_info (tree_view);
14242
14243   if (di)
14244     {
14245       if (di->source_set)
14246         {
14247           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14248           di->source_set = FALSE;
14249         }
14250
14251       if (!di->dest_set && !di->source_set)
14252         remove_info (tree_view);
14253     }
14254
14255   unset_reorderable (tree_view);
14256 }
14257
14258 /**
14259  * gtk_tree_view_unset_rows_drag_dest:
14260  * @tree_view: a #GtkTreeView
14261  *
14262  * Undoes the effect of
14263  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14264  * #GtkTreeView:reorderable to %FALSE.
14265  **/
14266 void
14267 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14268 {
14269   TreeViewDragInfo *di;
14270
14271   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14272
14273   di = get_info (tree_view);
14274
14275   if (di)
14276     {
14277       if (di->dest_set)
14278         {
14279           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14280           di->dest_set = FALSE;
14281         }
14282
14283       if (!di->dest_set && !di->source_set)
14284         remove_info (tree_view);
14285     }
14286
14287   unset_reorderable (tree_view);
14288 }
14289
14290 /**
14291  * gtk_tree_view_set_drag_dest_row:
14292  * @tree_view: a #GtkTreeView
14293  * @path: (allow-none): The path of the row to highlight, or %NULL
14294  * @pos: Specifies whether to drop before, after or into the row
14295  *
14296  * Sets the row that is highlighted for feedback.
14297  * If @path is %NULL, an existing highlight is removed.
14298  */
14299 void
14300 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14301                                  GtkTreePath            *path,
14302                                  GtkTreeViewDropPosition pos)
14303 {
14304   GtkTreePath *current_dest;
14305
14306   /* Note; this function is exported to allow a custom DND
14307    * implementation, so it can't touch TreeViewDragInfo
14308    */
14309
14310   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14311
14312   current_dest = NULL;
14313
14314   if (tree_view->priv->drag_dest_row)
14315     {
14316       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14317       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14318     }
14319
14320   /* special case a drop on an empty model */
14321   tree_view->priv->empty_view_drop = 0;
14322
14323   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14324       && gtk_tree_path_get_depth (path) == 1
14325       && gtk_tree_path_get_indices (path)[0] == 0)
14326     {
14327       gint n_children;
14328
14329       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14330                                                    NULL);
14331
14332       if (!n_children)
14333         tree_view->priv->empty_view_drop = 1;
14334     }
14335
14336   tree_view->priv->drag_dest_pos = pos;
14337
14338   if (path)
14339     {
14340       tree_view->priv->drag_dest_row =
14341         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14342       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14343     }
14344   else
14345     tree_view->priv->drag_dest_row = NULL;
14346
14347   if (current_dest)
14348     {
14349       GtkRBTree *tree, *new_tree;
14350       GtkRBNode *node, *new_node;
14351
14352       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14353       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14354
14355       if (tree && node)
14356         {
14357           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14358           if (new_tree && new_node)
14359             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14360
14361           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14362           if (new_tree && new_node)
14363             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14364         }
14365       gtk_tree_path_free (current_dest);
14366     }
14367 }
14368
14369 /**
14370  * gtk_tree_view_get_drag_dest_row:
14371  * @tree_view: a #GtkTreeView
14372  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14373  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14374  *
14375  * Gets information about the row that is highlighted for feedback.
14376  **/
14377 void
14378 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14379                                  GtkTreePath             **path,
14380                                  GtkTreeViewDropPosition  *pos)
14381 {
14382   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14383
14384   if (path)
14385     {
14386       if (tree_view->priv->drag_dest_row)
14387         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14388       else
14389         {
14390           if (tree_view->priv->empty_view_drop)
14391             *path = gtk_tree_path_new_from_indices (0, -1);
14392           else
14393             *path = NULL;
14394         }
14395     }
14396
14397   if (pos)
14398     *pos = tree_view->priv->drag_dest_pos;
14399 }
14400
14401 /**
14402  * gtk_tree_view_get_dest_row_at_pos:
14403  * @tree_view: a #GtkTreeView
14404  * @drag_x: the position to determine the destination row for
14405  * @drag_y: the position to determine the destination row for
14406  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14407  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14408  *
14409  * Determines the destination row for a given position.  @drag_x and
14410  * @drag_y are expected to be in widget coordinates.  This function is only
14411  * meaningful if @tree_view is realized.  Therefore this function will always
14412  * return %FALSE if @tree_view is not realized or does not have a model.
14413  *
14414  * Return value: whether there is a row at the given position, %TRUE if this
14415  * is indeed the case.
14416  **/
14417 gboolean
14418 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14419                                    gint                     drag_x,
14420                                    gint                     drag_y,
14421                                    GtkTreePath            **path,
14422                                    GtkTreeViewDropPosition *pos)
14423 {
14424   gint cell_y;
14425   gint bin_x, bin_y;
14426   gdouble offset_into_row;
14427   gdouble third;
14428   GdkRectangle cell;
14429   GtkTreeViewColumn *column = NULL;
14430   GtkTreePath *tmp_path = NULL;
14431
14432   /* Note; this function is exported to allow a custom DND
14433    * implementation, so it can't touch TreeViewDragInfo
14434    */
14435
14436   g_return_val_if_fail (tree_view != NULL, FALSE);
14437   g_return_val_if_fail (drag_x >= 0, FALSE);
14438   g_return_val_if_fail (drag_y >= 0, FALSE);
14439
14440   if (path)
14441     *path = NULL;
14442
14443   if (tree_view->priv->bin_window == NULL)
14444     return FALSE;
14445
14446   if (tree_view->priv->tree == NULL)
14447     return FALSE;
14448
14449   /* If in the top third of a row, we drop before that row; if
14450    * in the bottom third, drop after that row; if in the middle,
14451    * and the row has children, drop into the row.
14452    */
14453   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14454                                                      &bin_x, &bin_y);
14455
14456   if (!gtk_tree_view_get_path_at_pos (tree_view,
14457                                       bin_x,
14458                                       bin_y,
14459                                       &tmp_path,
14460                                       &column,
14461                                       NULL,
14462                                       &cell_y))
14463     return FALSE;
14464
14465   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14466                                      &cell);
14467
14468   offset_into_row = cell_y;
14469
14470   if (path)
14471     *path = tmp_path;
14472   else
14473     gtk_tree_path_free (tmp_path);
14474
14475   tmp_path = NULL;
14476
14477   third = cell.height / 3.0;
14478
14479   if (pos)
14480     {
14481       if (offset_into_row < third)
14482         {
14483           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14484         }
14485       else if (offset_into_row < (cell.height / 2.0))
14486         {
14487           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14488         }
14489       else if (offset_into_row < third * 2.0)
14490         {
14491           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14492         }
14493       else
14494         {
14495           *pos = GTK_TREE_VIEW_DROP_AFTER;
14496         }
14497     }
14498
14499   return TRUE;
14500 }
14501
14502
14503
14504 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14505 /**
14506  * gtk_tree_view_create_row_drag_icon:
14507  * @tree_view: a #GtkTreeView
14508  * @path: a #GtkTreePath in @tree_view
14509  *
14510  * Creates a #cairo_surface_t representation of the row at @path.
14511  * This image is used for a drag icon.
14512  *
14513  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14514  **/
14515 cairo_surface_t *
14516 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14517                                     GtkTreePath  *path)
14518 {
14519   GtkTreeIter   iter;
14520   GtkRBTree    *tree;
14521   GtkRBNode    *node;
14522   GtkStyleContext *context;
14523   GtkStateFlags state;
14524   gint cell_offset;
14525   GList *list;
14526   GdkRectangle background_area;
14527   GtkWidget *widget;
14528   gint depth;
14529   /* start drawing inside the black outline */
14530   gint x = 1, y = 1;
14531   cairo_surface_t *surface;
14532   gint bin_window_width;
14533   gboolean is_separator = FALSE;
14534   gboolean rtl, allow_rules;
14535   cairo_t *cr;
14536
14537   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14538   g_return_val_if_fail (path != NULL, NULL);
14539
14540   widget = GTK_WIDGET (tree_view);
14541
14542   if (!gtk_widget_get_realized (widget))
14543     return NULL;
14544
14545   depth = gtk_tree_path_get_depth (path);
14546
14547   _gtk_tree_view_find_node (tree_view,
14548                             path,
14549                             &tree,
14550                             &node);
14551
14552   if (tree == NULL)
14553     return NULL;
14554
14555   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14556                                 &iter,
14557                                 path))
14558     return NULL;
14559
14560   context = gtk_widget_get_style_context (widget);
14561
14562   gtk_style_context_save (context);
14563
14564   state = gtk_widget_get_state_flags (widget);
14565   gtk_style_context_set_state (context, state);
14566
14567   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14568   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14569
14570   gtk_widget_style_get (widget,
14571                         "allow-rules", &allow_rules,
14572                         NULL);
14573
14574   if (allow_rules && tree_view->priv->has_rules)
14575     {
14576       GtkRegionFlags row_flags;
14577
14578       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14579         row_flags = GTK_REGION_ODD;
14580       else
14581         row_flags = GTK_REGION_EVEN;
14582
14583       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14584     }
14585
14586   is_separator = row_is_separator (tree_view, &iter, NULL);
14587
14588   cell_offset = x;
14589
14590   background_area.y = y;
14591   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14592
14593   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14594
14595   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14596                                                CAIRO_CONTENT_COLOR,
14597                                                bin_window_width + 2,
14598                                                background_area.height + 2);
14599
14600   cr = cairo_create (surface);
14601
14602   gtk_render_background (context, cr, 0, 0,
14603                          bin_window_width + 2,
14604                          background_area.height + 2);
14605
14606   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14607
14608   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14609       list;
14610       list = (rtl ? list->prev : list->next))
14611     {
14612       GtkTreeViewColumn *column = list->data;
14613       GdkRectangle cell_area;
14614       gint vertical_separator;
14615
14616       if (!gtk_tree_view_column_get_visible (column))
14617         continue;
14618
14619       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14620                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14621                                                node->children?TRUE:FALSE);
14622
14623       background_area.x = cell_offset;
14624       background_area.width = gtk_tree_view_column_get_width (column);
14625
14626       gtk_widget_style_get (widget,
14627                             "vertical-separator", &vertical_separator,
14628                             NULL);
14629
14630       cell_area = background_area;
14631
14632       cell_area.y += vertical_separator / 2;
14633       cell_area.height -= vertical_separator;
14634
14635       if (gtk_tree_view_is_expander_column (tree_view, column))
14636         {
14637           if (!rtl)
14638             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14639           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14640
14641           if (gtk_tree_view_draw_expanders (tree_view))
14642             {
14643               if (!rtl)
14644                 cell_area.x += depth * tree_view->priv->expander_size;
14645               cell_area.width -= depth * tree_view->priv->expander_size;
14646             }
14647         }
14648
14649       if (gtk_tree_view_column_cell_is_visible (column))
14650         {
14651           if (is_separator)
14652             {
14653               gtk_style_context_save (context);
14654               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14655
14656               gtk_render_line (context, cr,
14657                                cell_area.x,
14658                                cell_area.y + cell_area.height / 2,
14659                                cell_area.x + cell_area.width,
14660                                cell_area.y + cell_area.height / 2);
14661
14662               gtk_style_context_restore (context);
14663             }
14664           else
14665             {
14666               _gtk_tree_view_column_cell_render (column,
14667                                                  cr,
14668                                                  &background_area,
14669                                                  &cell_area,
14670                                                  0, FALSE);
14671             }
14672         }
14673       cell_offset += gtk_tree_view_column_get_width (column);
14674     }
14675
14676   cairo_set_source_rgb (cr, 0, 0, 0);
14677   cairo_rectangle (cr,
14678                    0.5, 0.5,
14679                    bin_window_width + 1,
14680                    background_area.height + 1);
14681   cairo_set_line_width (cr, 1.0);
14682   cairo_stroke (cr);
14683
14684   cairo_destroy (cr);
14685
14686   cairo_surface_set_device_offset (surface, 2, 2);
14687
14688   gtk_style_context_restore (context);
14689
14690   return surface;
14691 }
14692
14693
14694 /**
14695  * gtk_tree_view_set_destroy_count_func:
14696  * @tree_view: A #GtkTreeView
14697  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14698  * @data: (allow-none): User data to be passed to @func, or %NULL
14699  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14700  *
14701  * This function should almost never be used.  It is meant for private use by
14702  * ATK for determining the number of visible children that are removed when the
14703  * user collapses a row, or a row is deleted.
14704  **/
14705 void
14706 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14707                                       GtkTreeDestroyCountFunc  func,
14708                                       gpointer                 data,
14709                                       GDestroyNotify           destroy)
14710 {
14711   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14712
14713   if (tree_view->priv->destroy_count_destroy)
14714     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14715
14716   tree_view->priv->destroy_count_func = func;
14717   tree_view->priv->destroy_count_data = data;
14718   tree_view->priv->destroy_count_destroy = destroy;
14719 }
14720
14721
14722 /*
14723  * Interactive search
14724  */
14725
14726 /**
14727  * gtk_tree_view_set_enable_search:
14728  * @tree_view: A #GtkTreeView
14729  * @enable_search: %TRUE, if the user can search interactively
14730  *
14731  * If @enable_search is set, then the user can type in text to search through
14732  * the tree interactively (this is sometimes called "typeahead find").
14733  *
14734  * Note that even if this is %FALSE, the user can still initiate a search
14735  * using the "start-interactive-search" key binding.
14736  */
14737 void
14738 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14739                                  gboolean     enable_search)
14740 {
14741   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14742
14743   enable_search = !!enable_search;
14744
14745   if (tree_view->priv->enable_search != enable_search)
14746     {
14747        tree_view->priv->enable_search = enable_search;
14748        g_object_notify (G_OBJECT (tree_view), "enable-search");
14749     }
14750 }
14751
14752 /**
14753  * gtk_tree_view_get_enable_search:
14754  * @tree_view: A #GtkTreeView
14755  *
14756  * Returns whether or not the tree allows to start interactive searching
14757  * by typing in text.
14758  *
14759  * Return value: whether or not to let the user search interactively
14760  */
14761 gboolean
14762 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14763 {
14764   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14765
14766   return tree_view->priv->enable_search;
14767 }
14768
14769
14770 /**
14771  * gtk_tree_view_get_search_column:
14772  * @tree_view: A #GtkTreeView
14773  *
14774  * Gets the column searched on by the interactive search code.
14775  *
14776  * Return value: the column the interactive search code searches in.
14777  */
14778 gint
14779 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14780 {
14781   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14782
14783   return (tree_view->priv->search_column);
14784 }
14785
14786 /**
14787  * gtk_tree_view_set_search_column:
14788  * @tree_view: A #GtkTreeView
14789  * @column: the column of the model to search in, or -1 to disable searching
14790  *
14791  * Sets @column as the column where the interactive search code should
14792  * search in for the current model.
14793  *
14794  * If the search column is set, users can use the "start-interactive-search"
14795  * key binding to bring up search popup. The enable-search property controls
14796  * whether simply typing text will also start an interactive search.
14797  *
14798  * Note that @column refers to a column of the current model. The search
14799  * column is reset to -1 when the model is changed.
14800  */
14801 void
14802 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14803                                  gint         column)
14804 {
14805   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14806   g_return_if_fail (column >= -1);
14807
14808   if (tree_view->priv->search_column == column)
14809     return;
14810
14811   tree_view->priv->search_column = column;
14812   g_object_notify (G_OBJECT (tree_view), "search-column");
14813 }
14814
14815 /**
14816  * gtk_tree_view_get_search_equal_func: (skip)
14817  * @tree_view: A #GtkTreeView
14818  *
14819  * Returns the compare function currently in use.
14820  *
14821  * Return value: the currently used compare function for the search code.
14822  */
14823
14824 GtkTreeViewSearchEqualFunc
14825 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14826 {
14827   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14828
14829   return tree_view->priv->search_equal_func;
14830 }
14831
14832 /**
14833  * gtk_tree_view_set_search_equal_func:
14834  * @tree_view: A #GtkTreeView
14835  * @search_equal_func: the compare function to use during the search
14836  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14837  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14838  *
14839  * Sets the compare function for the interactive search capabilities; note
14840  * that somewhat like strcmp() returning 0 for equality
14841  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14842  **/
14843 void
14844 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14845                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14846                                      gpointer                    search_user_data,
14847                                      GDestroyNotify              search_destroy)
14848 {
14849   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14850   g_return_if_fail (search_equal_func != NULL);
14851
14852   if (tree_view->priv->search_destroy)
14853     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14854
14855   tree_view->priv->search_equal_func = search_equal_func;
14856   tree_view->priv->search_user_data = search_user_data;
14857   tree_view->priv->search_destroy = search_destroy;
14858   if (tree_view->priv->search_equal_func == NULL)
14859     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14860 }
14861
14862 /**
14863  * gtk_tree_view_get_search_entry:
14864  * @tree_view: A #GtkTreeView
14865  *
14866  * Returns the #GtkEntry which is currently in use as interactive search
14867  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14868  * will be returned.
14869  *
14870  * Return value: (transfer none): the entry currently in use as search entry.
14871  *
14872  * Since: 2.10
14873  */
14874 GtkEntry *
14875 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14876 {
14877   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14878
14879   if (tree_view->priv->search_custom_entry_set)
14880     return GTK_ENTRY (tree_view->priv->search_entry);
14881
14882   return NULL;
14883 }
14884
14885 /**
14886  * gtk_tree_view_set_search_entry:
14887  * @tree_view: A #GtkTreeView
14888  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14889  *
14890  * Sets the entry which the interactive search code will use for this
14891  * @tree_view.  This is useful when you want to provide a search entry
14892  * in our interface at all time at a fixed position.  Passing %NULL for
14893  * @entry will make the interactive search code use the built-in popup
14894  * entry again.
14895  *
14896  * Since: 2.10
14897  */
14898 void
14899 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14900                                 GtkEntry    *entry)
14901 {
14902   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14903   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14904
14905   if (tree_view->priv->search_custom_entry_set)
14906     {
14907       if (tree_view->priv->search_entry_changed_id)
14908         {
14909           g_signal_handler_disconnect (tree_view->priv->search_entry,
14910                                        tree_view->priv->search_entry_changed_id);
14911           tree_view->priv->search_entry_changed_id = 0;
14912         }
14913       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14914                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14915                                             tree_view);
14916
14917       g_object_unref (tree_view->priv->search_entry);
14918     }
14919   else if (tree_view->priv->search_window)
14920     {
14921       gtk_widget_destroy (tree_view->priv->search_window);
14922
14923       tree_view->priv->search_window = NULL;
14924     }
14925
14926   if (entry)
14927     {
14928       tree_view->priv->search_entry = g_object_ref (entry);
14929       tree_view->priv->search_custom_entry_set = TRUE;
14930
14931       if (tree_view->priv->search_entry_changed_id == 0)
14932         {
14933           tree_view->priv->search_entry_changed_id =
14934             g_signal_connect (tree_view->priv->search_entry, "changed",
14935                               G_CALLBACK (gtk_tree_view_search_init),
14936                               tree_view);
14937         }
14938
14939         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14940                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14941                           tree_view);
14942
14943         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14944     }
14945   else
14946     {
14947       tree_view->priv->search_entry = NULL;
14948       tree_view->priv->search_custom_entry_set = FALSE;
14949     }
14950 }
14951
14952 /**
14953  * gtk_tree_view_set_search_position_func:
14954  * @tree_view: A #GtkTreeView
14955  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14956  *    to use the default search position function
14957  * @data: (allow-none): user data to pass to @func, or %NULL
14958  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14959  *
14960  * Sets the function to use when positioning the search dialog.
14961  *
14962  * Since: 2.10
14963  **/
14964 void
14965 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14966                                         GtkTreeViewSearchPositionFunc  func,
14967                                         gpointer                       user_data,
14968                                         GDestroyNotify                 destroy)
14969 {
14970   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14971
14972   if (tree_view->priv->search_position_destroy)
14973     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14974
14975   tree_view->priv->search_position_func = func;
14976   tree_view->priv->search_position_user_data = user_data;
14977   tree_view->priv->search_position_destroy = destroy;
14978   if (tree_view->priv->search_position_func == NULL)
14979     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14980 }
14981
14982 /**
14983  * gtk_tree_view_get_search_position_func: (skip)
14984  * @tree_view: A #GtkTreeView
14985  *
14986  * Returns the positioning function currently in use.
14987  *
14988  * Return value: the currently used function for positioning the search dialog.
14989  *
14990  * Since: 2.10
14991  */
14992 GtkTreeViewSearchPositionFunc
14993 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14994 {
14995   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14996
14997   return tree_view->priv->search_position_func;
14998 }
14999
15000
15001 static void
15002 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15003                                   GtkTreeView *tree_view,
15004                                   GdkDevice   *device)
15005 {
15006   if (tree_view->priv->disable_popdown)
15007     return;
15008
15009   if (tree_view->priv->search_entry_changed_id)
15010     {
15011       g_signal_handler_disconnect (tree_view->priv->search_entry,
15012                                    tree_view->priv->search_entry_changed_id);
15013       tree_view->priv->search_entry_changed_id = 0;
15014     }
15015   if (tree_view->priv->typeselect_flush_timeout)
15016     {
15017       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15018       tree_view->priv->typeselect_flush_timeout = 0;
15019     }
15020
15021   if (gtk_widget_get_visible (search_dialog))
15022     {
15023       /* send focus-in event */
15024       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15025       gtk_widget_hide (search_dialog);
15026       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15027       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15028     }
15029 }
15030
15031 static void
15032 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15033                                     GtkWidget   *search_dialog,
15034                                     gpointer     user_data)
15035 {
15036   gint x, y;
15037   gint tree_x, tree_y;
15038   gint tree_width, tree_height;
15039   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15040   GdkScreen *screen = gdk_window_get_screen (tree_window);
15041   GtkRequisition requisition;
15042   gint monitor_num;
15043   GdkRectangle monitor;
15044
15045   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15046   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
15047
15048   gtk_widget_realize (search_dialog);
15049
15050   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15051   tree_width = gdk_window_get_width (tree_window);
15052   tree_height = gdk_window_get_height (tree_window);
15053   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15054
15055   if (tree_x + tree_width > gdk_screen_get_width (screen))
15056     x = gdk_screen_get_width (screen) - requisition.width;
15057   else if (tree_x + tree_width - requisition.width < 0)
15058     x = 0;
15059   else
15060     x = tree_x + tree_width - requisition.width;
15061
15062   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15063     y = gdk_screen_get_height (screen) - requisition.height;
15064   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15065     y = 0;
15066   else
15067     y = tree_y + tree_height;
15068
15069   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15070 }
15071
15072 static void
15073 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15074                                       GtkMenu  *menu,
15075                                       gpointer  data)
15076 {
15077   GtkTreeView *tree_view = (GtkTreeView *)data;
15078
15079   tree_view->priv->disable_popdown = 1;
15080   g_signal_connect (menu, "hide",
15081                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15082 }
15083
15084 /* Because we're visible but offscreen, we just set a flag in the preedit
15085  * callback.
15086  */
15087 static void
15088 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15089                                       GtkTreeView  *tree_view)
15090 {
15091   tree_view->priv->imcontext_changed = 1;
15092   if (tree_view->priv->typeselect_flush_timeout)
15093     {
15094       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15095       tree_view->priv->typeselect_flush_timeout =
15096         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15097                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15098                        tree_view);
15099     }
15100
15101 }
15102
15103 static void
15104 gtk_tree_view_search_activate (GtkEntry    *entry,
15105                                GtkTreeView *tree_view)
15106 {
15107   GtkTreePath *path;
15108   GtkRBNode *node;
15109   GtkRBTree *tree;
15110
15111   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15112                                     tree_view,
15113                                     gtk_get_current_event_device ());
15114
15115   /* If we have a row selected and it's the cursor row, we activate
15116    * the row XXX */
15117   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
15118     {
15119       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
15120
15121       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15122
15123       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
15124         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15125
15126       gtk_tree_path_free (path);
15127     }
15128 }
15129
15130 static gboolean
15131 gtk_tree_view_real_search_enable_popdown (gpointer data)
15132 {
15133   GtkTreeView *tree_view = (GtkTreeView *)data;
15134
15135   tree_view->priv->disable_popdown = 0;
15136
15137   return FALSE;
15138 }
15139
15140 static void
15141 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15142                                      gpointer   data)
15143 {
15144   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15145 }
15146
15147 static gboolean
15148 gtk_tree_view_search_delete_event (GtkWidget *widget,
15149                                    GdkEventAny *event,
15150                                    GtkTreeView *tree_view)
15151 {
15152   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15153
15154   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15155
15156   return TRUE;
15157 }
15158
15159 static gboolean
15160 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15161                                          GdkEventButton *event,
15162                                          GtkTreeView *tree_view)
15163 {
15164   GdkDevice *keyb_device;
15165
15166   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15167
15168   keyb_device = gdk_device_get_associated_device (event->device);
15169   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15170
15171   if (event->window == tree_view->priv->bin_window)
15172     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15173
15174   return TRUE;
15175 }
15176
15177 static gboolean
15178 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15179                                    GdkEventScroll *event,
15180                                    GtkTreeView *tree_view)
15181 {
15182   gboolean retval = FALSE;
15183
15184   if (event->direction == GDK_SCROLL_UP)
15185     {
15186       gtk_tree_view_search_move (widget, tree_view, TRUE);
15187       retval = TRUE;
15188     }
15189   else if (event->direction == GDK_SCROLL_DOWN)
15190     {
15191       gtk_tree_view_search_move (widget, tree_view, FALSE);
15192       retval = TRUE;
15193     }
15194
15195   /* renew the flush timeout */
15196   if (retval && tree_view->priv->typeselect_flush_timeout
15197       && !tree_view->priv->search_custom_entry_set)
15198     {
15199       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15200       tree_view->priv->typeselect_flush_timeout =
15201         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15202                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15203                        tree_view);
15204     }
15205
15206   return retval;
15207 }
15208
15209 static gboolean
15210 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15211                                       GdkEventKey *event,
15212                                       GtkTreeView *tree_view)
15213 {
15214   GdkModifierType default_accel;
15215   gboolean        retval = FALSE;
15216
15217   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15218   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15219
15220   /* close window and cancel the search */
15221   if (!tree_view->priv->search_custom_entry_set
15222       && (event->keyval == GDK_KEY_Escape ||
15223           event->keyval == GDK_KEY_Tab ||
15224             event->keyval == GDK_KEY_KP_Tab ||
15225             event->keyval == GDK_KEY_ISO_Left_Tab))
15226     {
15227       gtk_tree_view_search_dialog_hide (widget, tree_view,
15228                                         gdk_event_get_device ((GdkEvent *) event));
15229       return TRUE;
15230     }
15231
15232   default_accel = gtk_widget_get_modifier_mask (widget,
15233                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15234
15235   /* select previous matching iter */
15236   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15237     {
15238       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15239         gtk_widget_error_bell (widget);
15240
15241       retval = TRUE;
15242     }
15243
15244   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15245       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15246     {
15247       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15248         gtk_widget_error_bell (widget);
15249
15250       retval = TRUE;
15251     }
15252
15253   /* select next matching iter */
15254   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15255     {
15256       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15257         gtk_widget_error_bell (widget);
15258
15259       retval = TRUE;
15260     }
15261
15262   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15263       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15264     {
15265       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15266         gtk_widget_error_bell (widget);
15267
15268       retval = TRUE;
15269     }
15270
15271   /* renew the flush timeout */
15272   if (retval && tree_view->priv->typeselect_flush_timeout
15273       && !tree_view->priv->search_custom_entry_set)
15274     {
15275       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15276       tree_view->priv->typeselect_flush_timeout =
15277         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15278                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15279                        tree_view);
15280     }
15281
15282   return retval;
15283 }
15284
15285 /*  this function returns FALSE if there is a search string but
15286  *  nothing was found, and TRUE otherwise.
15287  */
15288 static gboolean
15289 gtk_tree_view_search_move (GtkWidget   *window,
15290                            GtkTreeView *tree_view,
15291                            gboolean     up)
15292 {
15293   gboolean ret;
15294   gint len;
15295   gint count = 0;
15296   const gchar *text;
15297   GtkTreeIter iter;
15298   GtkTreeModel *model;
15299   GtkTreeSelection *selection;
15300
15301   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15302
15303   g_return_val_if_fail (text != NULL, FALSE);
15304
15305   len = strlen (text);
15306
15307   if (up && tree_view->priv->selected_iter == 1)
15308     return strlen (text) < 1;
15309
15310   len = strlen (text);
15311
15312   if (len < 1)
15313     return TRUE;
15314
15315   model = gtk_tree_view_get_model (tree_view);
15316   selection = gtk_tree_view_get_selection (tree_view);
15317
15318   /* search */
15319   gtk_tree_selection_unselect_all (selection);
15320   if (!gtk_tree_model_get_iter_first (model, &iter))
15321     return TRUE;
15322
15323   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15324                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15325
15326   if (ret)
15327     {
15328       /* found */
15329       tree_view->priv->selected_iter += up?(-1):(1);
15330       return TRUE;
15331     }
15332   else
15333     {
15334       /* return to old iter */
15335       count = 0;
15336       gtk_tree_model_get_iter_first (model, &iter);
15337       gtk_tree_view_search_iter (model, selection,
15338                                  &iter, text,
15339                                  &count, tree_view->priv->selected_iter);
15340       return FALSE;
15341     }
15342 }
15343
15344 static gboolean
15345 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15346                                  gint          column,
15347                                  const gchar  *key,
15348                                  GtkTreeIter  *iter,
15349                                  gpointer      search_data)
15350 {
15351   gboolean retval = TRUE;
15352   const gchar *str;
15353   gchar *normalized_string;
15354   gchar *normalized_key;
15355   gchar *case_normalized_string = NULL;
15356   gchar *case_normalized_key = NULL;
15357   GValue value = G_VALUE_INIT;
15358   GValue transformed = G_VALUE_INIT;
15359
15360   gtk_tree_model_get_value (model, iter, column, &value);
15361
15362   g_value_init (&transformed, G_TYPE_STRING);
15363
15364   if (!g_value_transform (&value, &transformed))
15365     {
15366       g_value_unset (&value);
15367       return TRUE;
15368     }
15369
15370   g_value_unset (&value);
15371
15372   str = g_value_get_string (&transformed);
15373   if (!str)
15374     {
15375       g_value_unset (&transformed);
15376       return TRUE;
15377     }
15378
15379   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15380   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15381
15382   if (normalized_string && normalized_key)
15383     {
15384       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15385       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15386
15387       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15388         retval = FALSE;
15389     }
15390
15391   g_value_unset (&transformed);
15392   g_free (normalized_key);
15393   g_free (normalized_string);
15394   g_free (case_normalized_key);
15395   g_free (case_normalized_string);
15396
15397   return retval;
15398 }
15399
15400 static gboolean
15401 gtk_tree_view_search_iter (GtkTreeModel     *model,
15402                            GtkTreeSelection *selection,
15403                            GtkTreeIter      *iter,
15404                            const gchar      *text,
15405                            gint             *count,
15406                            gint              n)
15407 {
15408   GtkRBTree *tree = NULL;
15409   GtkRBNode *node = NULL;
15410   GtkTreePath *path;
15411
15412   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15413
15414   path = gtk_tree_model_get_path (model, iter);
15415   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15416
15417   do
15418     {
15419       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15420         {
15421           (*count)++;
15422           if (*count == n)
15423             {
15424               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15425                                             TRUE, 0.5, 0.0);
15426               gtk_tree_selection_select_iter (selection, iter);
15427               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15428
15429               if (path)
15430                 gtk_tree_path_free (path);
15431
15432               return TRUE;
15433             }
15434         }
15435
15436       if (node->children)
15437         {
15438           gboolean has_child;
15439           GtkTreeIter tmp;
15440
15441           tree = node->children;
15442           node = tree->root;
15443
15444           while (node->left != tree->nil)
15445             node = node->left;
15446
15447           tmp = *iter;
15448           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15449           gtk_tree_path_down (path);
15450
15451           /* sanity check */
15452           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15453         }
15454       else
15455         {
15456           gboolean done = FALSE;
15457
15458           do
15459             {
15460               node = _gtk_rbtree_next (tree, node);
15461
15462               if (node)
15463                 {
15464                   gboolean has_next;
15465
15466                   has_next = gtk_tree_model_iter_next (model, iter);
15467
15468                   done = TRUE;
15469                   gtk_tree_path_next (path);
15470
15471                   /* sanity check */
15472                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15473                 }
15474               else
15475                 {
15476                   gboolean has_parent;
15477                   GtkTreeIter tmp_iter = *iter;
15478
15479                   node = tree->parent_node;
15480                   tree = tree->parent_tree;
15481
15482                   if (!tree)
15483                     {
15484                       if (path)
15485                         gtk_tree_path_free (path);
15486
15487                       /* we've run out of tree, done with this func */
15488                       return FALSE;
15489                     }
15490
15491                   has_parent = gtk_tree_model_iter_parent (model,
15492                                                            iter,
15493                                                            &tmp_iter);
15494                   gtk_tree_path_up (path);
15495
15496                   /* sanity check */
15497                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15498                 }
15499             }
15500           while (!done);
15501         }
15502     }
15503   while (1);
15504
15505   return FALSE;
15506 }
15507
15508 static void
15509 gtk_tree_view_search_init (GtkWidget   *entry,
15510                            GtkTreeView *tree_view)
15511 {
15512   gint ret;
15513   gint count = 0;
15514   const gchar *text;
15515   GtkTreeIter iter;
15516   GtkTreeModel *model;
15517   GtkTreeSelection *selection;
15518
15519   g_return_if_fail (GTK_IS_ENTRY (entry));
15520   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15521
15522   text = gtk_entry_get_text (GTK_ENTRY (entry));
15523
15524   model = gtk_tree_view_get_model (tree_view);
15525   selection = gtk_tree_view_get_selection (tree_view);
15526
15527   /* search */
15528   gtk_tree_selection_unselect_all (selection);
15529   if (tree_view->priv->typeselect_flush_timeout
15530       && !tree_view->priv->search_custom_entry_set)
15531     {
15532       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15533       tree_view->priv->typeselect_flush_timeout =
15534         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15535                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15536                        tree_view);
15537     }
15538
15539   if (*text == '\0')
15540     return;
15541
15542   if (!gtk_tree_model_get_iter_first (model, &iter))
15543     return;
15544
15545   ret = gtk_tree_view_search_iter (model, selection,
15546                                    &iter, text,
15547                                    &count, 1);
15548
15549   if (ret)
15550     tree_view->priv->selected_iter = 1;
15551 }
15552
15553 void
15554 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15555                                 GtkTreeViewColumn *column,
15556                                 GtkCellEditable   *cell_editable)
15557 {
15558   if (tree_view->priv->edited_column == NULL)
15559     return;
15560
15561   g_return_if_fail (column == tree_view->priv->edited_column);
15562
15563   tree_view->priv->edited_column = NULL;
15564
15565   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15566     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15567
15568   gtk_container_remove (GTK_CONTAINER (tree_view),
15569                         GTK_WIDGET (cell_editable));
15570
15571   /* FIXME should only redraw a single node */
15572   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15573 }
15574
15575 static gboolean
15576 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15577                              GtkTreePath *cursor_path,
15578                              gboolean     edit_only)
15579 {
15580   GtkTreeIter iter;
15581   GdkRectangle cell_area;
15582   GtkTreeViewColumn *focus_column;
15583   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15584   gint retval = FALSE;
15585   GtkRBTree *cursor_tree;
15586   GtkRBNode *cursor_node;
15587
15588   g_assert (tree_view->priv->focus_column);
15589   focus_column = tree_view->priv->focus_column;
15590
15591   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15592     return FALSE;
15593
15594   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15595       cursor_node == NULL)
15596     return FALSE;
15597
15598   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15599
15600   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15601
15602   gtk_tree_view_column_cell_set_cell_data (focus_column,
15603                                            tree_view->priv->model,
15604                                            &iter,
15605                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15606                                            cursor_node->children ? TRUE : FALSE);
15607   gtk_tree_view_get_cell_area (tree_view,
15608                                cursor_path,
15609                                focus_column,
15610                                &cell_area);
15611
15612   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15613                               _gtk_tree_view_column_get_context (focus_column),
15614                               GTK_WIDGET (tree_view),
15615                               &cell_area,
15616                               flags, edit_only))
15617     retval = TRUE;
15618
15619   return retval;
15620 }
15621
15622 void
15623 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15624                              GtkTreeViewColumn *column,
15625                              GtkTreePath       *path,
15626                              GtkCellEditable   *cell_editable,
15627                              GdkRectangle      *cell_area)
15628 {
15629   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15630   GtkRequisition requisition;
15631
15632   tree_view->priv->edited_column = column;
15633
15634   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15635   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15636
15637   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15638                                  &requisition, NULL);
15639
15640   tree_view->priv->draw_keyfocus = TRUE;
15641
15642   if (requisition.height < cell_area->height)
15643     {
15644       gint diff = cell_area->height - requisition.height;
15645       gtk_tree_view_put (tree_view,
15646                          GTK_WIDGET (cell_editable),
15647                          cell_area->x, cell_area->y + diff/2,
15648                          cell_area->width, requisition.height);
15649     }
15650   else
15651     {
15652       gtk_tree_view_put (tree_view,
15653                          GTK_WIDGET (cell_editable),
15654                          cell_area->x, cell_area->y,
15655                          cell_area->width, cell_area->height);
15656     }
15657 }
15658
15659 static void
15660 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15661                             gboolean     cancel_editing)
15662 {
15663   GtkTreeViewColumn *column;
15664
15665   if (tree_view->priv->edited_column == NULL)
15666     return;
15667
15668   /*
15669    * This is very evil. We need to do this, because
15670    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15671    * later on. If gtk_tree_view_row_changed notices
15672    * tree_view->priv->edited_column != NULL, it'll call
15673    * gtk_tree_view_stop_editing again. Bad things will happen then.
15674    *
15675    * Please read that again if you intend to modify anything here.
15676    */
15677
15678   column = tree_view->priv->edited_column;
15679   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15680   tree_view->priv->edited_column = NULL;
15681 }
15682
15683
15684 /**
15685  * gtk_tree_view_set_hover_selection:
15686  * @tree_view: a #GtkTreeView
15687  * @hover: %TRUE to enable hover selection mode
15688  *
15689  * Enables or disables the hover selection mode of @tree_view.
15690  * Hover selection makes the selected row follow the pointer.
15691  * Currently, this works only for the selection modes
15692  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15693  *
15694  * Since: 2.6
15695  **/
15696 void
15697 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15698                                    gboolean     hover)
15699 {
15700   hover = hover != FALSE;
15701
15702   if (hover != tree_view->priv->hover_selection)
15703     {
15704       tree_view->priv->hover_selection = hover;
15705
15706       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15707     }
15708 }
15709
15710 /**
15711  * gtk_tree_view_get_hover_selection:
15712  * @tree_view: a #GtkTreeView
15713  *
15714  * Returns whether hover selection mode is turned on for @tree_view.
15715  *
15716  * Return value: %TRUE if @tree_view is in hover selection mode
15717  *
15718  * Since: 2.6
15719  **/
15720 gboolean
15721 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15722 {
15723   return tree_view->priv->hover_selection;
15724 }
15725
15726 /**
15727  * gtk_tree_view_set_hover_expand:
15728  * @tree_view: a #GtkTreeView
15729  * @expand: %TRUE to enable hover selection mode
15730  *
15731  * Enables of disables the hover expansion mode of @tree_view.
15732  * Hover expansion makes rows expand or collapse if the pointer
15733  * moves over them.
15734  *
15735  * Since: 2.6
15736  **/
15737 void
15738 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15739                                 gboolean     expand)
15740 {
15741   expand = expand != FALSE;
15742
15743   if (expand != tree_view->priv->hover_expand)
15744     {
15745       tree_view->priv->hover_expand = expand;
15746
15747       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15748     }
15749 }
15750
15751 /**
15752  * gtk_tree_view_get_hover_expand:
15753  * @tree_view: a #GtkTreeView
15754  *
15755  * Returns whether hover expansion mode is turned on for @tree_view.
15756  *
15757  * Return value: %TRUE if @tree_view is in hover expansion mode
15758  *
15759  * Since: 2.6
15760  **/
15761 gboolean
15762 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15763 {
15764   return tree_view->priv->hover_expand;
15765 }
15766
15767 /**
15768  * gtk_tree_view_set_rubber_banding:
15769  * @tree_view: a #GtkTreeView
15770  * @enable: %TRUE to enable rubber banding
15771  *
15772  * Enables or disables rubber banding in @tree_view.  If the selection mode
15773  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15774  * multiple rows by dragging the mouse.
15775  *
15776  * Since: 2.10
15777  **/
15778 void
15779 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15780                                   gboolean     enable)
15781 {
15782   enable = enable != FALSE;
15783
15784   if (enable != tree_view->priv->rubber_banding_enable)
15785     {
15786       tree_view->priv->rubber_banding_enable = enable;
15787
15788       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15789     }
15790 }
15791
15792 /**
15793  * gtk_tree_view_get_rubber_banding:
15794  * @tree_view: a #GtkTreeView
15795  *
15796  * Returns whether rubber banding is turned on for @tree_view.  If the
15797  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15798  * user to select multiple rows by dragging the mouse.
15799  *
15800  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15801  *
15802  * Since: 2.10
15803  **/
15804 gboolean
15805 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15806 {
15807   return tree_view->priv->rubber_banding_enable;
15808 }
15809
15810 /**
15811  * gtk_tree_view_is_rubber_banding_active:
15812  * @tree_view: a #GtkTreeView
15813  *
15814  * Returns whether a rubber banding operation is currently being done
15815  * in @tree_view.
15816  *
15817  * Return value: %TRUE if a rubber banding operation is currently being
15818  * done in @tree_view.
15819  *
15820  * Since: 2.12
15821  **/
15822 gboolean
15823 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15824 {
15825   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15826
15827   if (tree_view->priv->rubber_banding_enable
15828       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15829     return TRUE;
15830
15831   return FALSE;
15832 }
15833
15834 /**
15835  * gtk_tree_view_get_row_separator_func: (skip)
15836  * @tree_view: a #GtkTreeView
15837  *
15838  * Returns the current row separator function.
15839  *
15840  * Return value: the current row separator function.
15841  *
15842  * Since: 2.6
15843  **/
15844 GtkTreeViewRowSeparatorFunc
15845 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15846 {
15847   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15848
15849   return tree_view->priv->row_separator_func;
15850 }
15851
15852 /**
15853  * gtk_tree_view_set_row_separator_func:
15854  * @tree_view: a #GtkTreeView
15855  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15856  * @data: (allow-none): user data to pass to @func, or %NULL
15857  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15858  *
15859  * Sets the row separator function, which is used to determine
15860  * whether a row should be drawn as a separator. If the row separator
15861  * function is %NULL, no separators are drawn. This is the default value.
15862  *
15863  * Since: 2.6
15864  **/
15865 void
15866 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15867                                       GtkTreeViewRowSeparatorFunc  func,
15868                                       gpointer                     data,
15869                                       GDestroyNotify               destroy)
15870 {
15871   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15872
15873   if (tree_view->priv->row_separator_destroy)
15874     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15875
15876   tree_view->priv->row_separator_func = func;
15877   tree_view->priv->row_separator_data = data;
15878   tree_view->priv->row_separator_destroy = destroy;
15879
15880   /* Have the tree recalculate heights */
15881   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15882   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15883 }
15884
15885
15886 static void
15887 gtk_tree_view_grab_notify (GtkWidget *widget,
15888                            gboolean   was_grabbed)
15889 {
15890   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15891
15892   tree_view->priv->in_grab = !was_grabbed;
15893
15894   if (!was_grabbed)
15895     {
15896       tree_view->priv->pressed_button = -1;
15897
15898       if (tree_view->priv->rubber_band_status)
15899         gtk_tree_view_stop_rubber_band (tree_view);
15900     }
15901 }
15902
15903 static void
15904 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15905                                    GtkStateFlags  previous_state)
15906 {
15907   if (gtk_widget_get_realized (widget))
15908     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15909
15910   gtk_widget_queue_draw (widget);
15911 }
15912
15913 /**
15914  * gtk_tree_view_get_grid_lines:
15915  * @tree_view: a #GtkTreeView
15916  *
15917  * Returns which grid lines are enabled in @tree_view.
15918  *
15919  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15920  * are enabled.
15921  *
15922  * Since: 2.10
15923  */
15924 GtkTreeViewGridLines
15925 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15926 {
15927   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15928
15929   return tree_view->priv->grid_lines;
15930 }
15931
15932 /**
15933  * gtk_tree_view_set_grid_lines:
15934  * @tree_view: a #GtkTreeView
15935  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15936  * enable.
15937  *
15938  * Sets which grid lines to draw in @tree_view.
15939  *
15940  * Since: 2.10
15941  */
15942 void
15943 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15944                               GtkTreeViewGridLines   grid_lines)
15945 {
15946   GtkTreeViewPrivate *priv;
15947   GtkWidget *widget;
15948   GtkTreeViewGridLines old_grid_lines;
15949
15950   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15951
15952   priv = tree_view->priv;
15953   widget = GTK_WIDGET (tree_view);
15954
15955   old_grid_lines = priv->grid_lines;
15956   priv->grid_lines = grid_lines;
15957
15958   if (gtk_widget_get_realized (widget))
15959     {
15960       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15961           priv->grid_line_width)
15962         {
15963           priv->grid_line_width = 0;
15964         }
15965
15966       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15967           !priv->grid_line_width)
15968         {
15969           gint8 *dash_list;
15970
15971           gtk_widget_style_get (widget,
15972                                 "grid-line-width", &priv->grid_line_width,
15973                                 "grid-line-pattern", (gchar *)&dash_list,
15974                                 NULL);
15975
15976           if (dash_list)
15977             {
15978               priv->grid_line_dashes[0] = dash_list[0];
15979               if (dash_list[0])
15980                 priv->grid_line_dashes[1] = dash_list[1];
15981
15982               g_free (dash_list);
15983             }
15984           else
15985             {
15986               priv->grid_line_dashes[0] = 1;
15987               priv->grid_line_dashes[1] = 1;
15988             }
15989         }
15990     }
15991
15992   if (old_grid_lines != grid_lines)
15993     {
15994       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15995
15996       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15997     }
15998 }
15999
16000 /**
16001  * gtk_tree_view_get_enable_tree_lines:
16002  * @tree_view: a #GtkTreeView.
16003  *
16004  * Returns whether or not tree lines are drawn in @tree_view.
16005  *
16006  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
16007  * otherwise.
16008  *
16009  * Since: 2.10
16010  */
16011 gboolean
16012 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16013 {
16014   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16015
16016   return tree_view->priv->tree_lines_enabled;
16017 }
16018
16019 /**
16020  * gtk_tree_view_set_enable_tree_lines:
16021  * @tree_view: a #GtkTreeView
16022  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16023  *
16024  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16025  * This does not have any visible effects for lists.
16026  *
16027  * Since: 2.10
16028  */
16029 void
16030 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16031                                      gboolean     enabled)
16032 {
16033   GtkTreeViewPrivate *priv;
16034   GtkWidget *widget;
16035   gboolean was_enabled;
16036
16037   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16038
16039   enabled = enabled != FALSE;
16040
16041   priv = tree_view->priv;
16042   widget = GTK_WIDGET (tree_view);
16043
16044   was_enabled = priv->tree_lines_enabled;
16045
16046   priv->tree_lines_enabled = enabled;
16047
16048   if (gtk_widget_get_realized (widget))
16049     {
16050       if (!enabled && priv->tree_line_width)
16051         {
16052           priv->tree_line_width = 0;
16053         }
16054
16055       if (enabled && !priv->tree_line_width)
16056         {
16057           gint8 *dash_list;
16058           gtk_widget_style_get (widget,
16059                                 "tree-line-width", &priv->tree_line_width,
16060                                 "tree-line-pattern", (gchar *)&dash_list,
16061                                 NULL);
16062
16063           if (dash_list)
16064             {
16065               priv->tree_line_dashes[0] = dash_list[0];
16066               if (dash_list[0])
16067                 priv->tree_line_dashes[1] = dash_list[1];
16068
16069               g_free (dash_list);
16070             }
16071           else
16072             {
16073               priv->tree_line_dashes[0] = 1;
16074               priv->tree_line_dashes[1] = 1;
16075             }
16076         }
16077     }
16078
16079   if (was_enabled != enabled)
16080     {
16081       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16082
16083       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16084     }
16085 }
16086
16087
16088 /**
16089  * gtk_tree_view_set_show_expanders:
16090  * @tree_view: a #GtkTreeView
16091  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16092  *
16093  * Sets whether to draw and enable expanders and indent child rows in
16094  * @tree_view.  When disabled there will be no expanders visible in trees
16095  * and there will be no way to expand and collapse rows by default.  Also
16096  * note that hiding the expanders will disable the default indentation.  You
16097  * can set a custom indentation in this case using
16098  * gtk_tree_view_set_level_indentation().
16099  * This does not have any visible effects for lists.
16100  *
16101  * Since: 2.12
16102  */
16103 void
16104 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16105                                   gboolean     enabled)
16106 {
16107   gboolean was_enabled;
16108
16109   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16110
16111   enabled = enabled != FALSE;
16112   was_enabled = tree_view->priv->show_expanders;
16113
16114   tree_view->priv->show_expanders = enabled == TRUE;
16115
16116   if (enabled != was_enabled)
16117     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16118 }
16119
16120 /**
16121  * gtk_tree_view_get_show_expanders:
16122  * @tree_view: a #GtkTreeView.
16123  *
16124  * Returns whether or not expanders are drawn in @tree_view.
16125  *
16126  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16127  * otherwise.
16128  *
16129  * Since: 2.12
16130  */
16131 gboolean
16132 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16133 {
16134   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16135
16136   return tree_view->priv->show_expanders;
16137 }
16138
16139 /**
16140  * gtk_tree_view_set_level_indentation:
16141  * @tree_view: a #GtkTreeView
16142  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16143  *
16144  * Sets the amount of extra indentation for child levels to use in @tree_view
16145  * in addition to the default indentation.  The value should be specified in
16146  * pixels, a value of 0 disables this feature and in this case only the default
16147  * indentation will be used.
16148  * This does not have any visible effects for lists.
16149  *
16150  * Since: 2.12
16151  */
16152 void
16153 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16154                                      gint         indentation)
16155 {
16156   tree_view->priv->level_indentation = indentation;
16157
16158   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16159 }
16160
16161 /**
16162  * gtk_tree_view_get_level_indentation:
16163  * @tree_view: a #GtkTreeView.
16164  *
16165  * Returns the amount, in pixels, of extra indentation for child levels
16166  * in @tree_view.
16167  *
16168  * Return value: the amount of extra indentation for child levels in
16169  * @tree_view.  A return value of 0 means that this feature is disabled.
16170  *
16171  * Since: 2.12
16172  */
16173 gint
16174 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16175 {
16176   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16177
16178   return tree_view->priv->level_indentation;
16179 }
16180
16181 /**
16182  * gtk_tree_view_set_tooltip_row:
16183  * @tree_view: a #GtkTreeView
16184  * @tooltip: a #GtkTooltip
16185  * @path: a #GtkTreePath
16186  *
16187  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16188  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16189  * See also gtk_tooltip_set_tip_area().
16190  *
16191  * Since: 2.12
16192  */
16193 void
16194 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16195                                GtkTooltip  *tooltip,
16196                                GtkTreePath *path)
16197 {
16198   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16199   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16200
16201   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16202 }
16203
16204 /**
16205  * gtk_tree_view_set_tooltip_cell:
16206  * @tree_view: a #GtkTreeView
16207  * @tooltip: a #GtkTooltip
16208  * @path: (allow-none): a #GtkTreePath or %NULL
16209  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16210  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16211  *
16212  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16213  * in common.  For example if @path is %NULL and @column is set, the tip
16214  * area will be set to the full area covered by @column.  See also
16215  * gtk_tooltip_set_tip_area().
16216  *
16217  * Note that if @path is not specified and @cell is set and part of a column
16218  * containing the expander, the tooltip might not show and hide at the correct
16219  * position.  In such cases @path must be set to the current node under the
16220  * mouse cursor for this function to operate correctly.
16221  *
16222  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16223  *
16224  * Since: 2.12
16225  */
16226 void
16227 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16228                                 GtkTooltip        *tooltip,
16229                                 GtkTreePath       *path,
16230                                 GtkTreeViewColumn *column,
16231                                 GtkCellRenderer   *cell)
16232 {
16233   GtkAllocation allocation;
16234   GdkRectangle rect;
16235
16236   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16237   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16238   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16239   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16240
16241   /* Determine x values. */
16242   if (column && cell)
16243     {
16244       GdkRectangle tmp;
16245       gint start, width;
16246
16247       /* We always pass in path here, whether it is NULL or not.
16248        * For cells in expander columns path must be specified so that
16249        * we can correctly account for the indentation.  This also means
16250        * that the tooltip is constrained vertically by the "Determine y
16251        * values" code below; this is not a real problem since cells actually
16252        * don't stretch vertically in constrast to columns.
16253        */
16254       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16255       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16256
16257       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16258                                                          tmp.x + start, 0,
16259                                                          &rect.x, NULL);
16260       rect.width = width;
16261     }
16262   else if (column)
16263     {
16264       GdkRectangle tmp;
16265
16266       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16267       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16268                                                          tmp.x, 0,
16269                                                          &rect.x, NULL);
16270       rect.width = tmp.width;
16271     }
16272   else
16273     {
16274       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16275       rect.x = 0;
16276       rect.width = allocation.width;
16277     }
16278
16279   /* Determine y values. */
16280   if (path)
16281     {
16282       GdkRectangle tmp;
16283
16284       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16285       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16286                                                          0, tmp.y,
16287                                                          NULL, &rect.y);
16288       rect.height = tmp.height;
16289     }
16290   else
16291     {
16292       rect.y = 0;
16293       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16294     }
16295
16296   gtk_tooltip_set_tip_area (tooltip, &rect);
16297 }
16298
16299 /**
16300  * gtk_tree_view_get_tooltip_context:
16301  * @tree_view: a #GtkTreeView
16302  * @x: (inout): the x coordinate (relative to widget coordinates)
16303  * @y: (inout): the y coordinate (relative to widget coordinates)
16304  * @keyboard_tip: whether this is a keyboard tooltip or not
16305  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16306  *         #GtkTreeModel or %NULL
16307  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16308  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16309  *
16310  * This function is supposed to be used in a #GtkWidget::query-tooltip
16311  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16312  * which are received in the signal handler, should be passed to this
16313  * function without modification.
16314  *
16315  * The return value indicates whether there is a tree view row at the given
16316  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16317  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16318  * @model, @path and @iter which have been provided will be set to point to
16319  * that row and the corresponding model.  @x and @y will always be converted
16320  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16321  *
16322  * Return value: whether or not the given tooltip context points to a row.
16323  *
16324  * Since: 2.12
16325  */
16326 gboolean
16327 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16328                                    gint          *x,
16329                                    gint          *y,
16330                                    gboolean       keyboard_tip,
16331                                    GtkTreeModel **model,
16332                                    GtkTreePath  **path,
16333                                    GtkTreeIter   *iter)
16334 {
16335   GtkTreePath *tmppath = NULL;
16336
16337   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16338   g_return_val_if_fail (x != NULL, FALSE);
16339   g_return_val_if_fail (y != NULL, FALSE);
16340
16341   if (keyboard_tip)
16342     {
16343       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16344
16345       if (!tmppath)
16346         return FALSE;
16347     }
16348   else
16349     {
16350       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16351                                                          x, y);
16352
16353       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16354                                           &tmppath, NULL, NULL, NULL))
16355         return FALSE;
16356     }
16357
16358   if (model)
16359     *model = gtk_tree_view_get_model (tree_view);
16360
16361   if (iter)
16362     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16363                              iter, tmppath);
16364
16365   if (path)
16366     *path = tmppath;
16367   else
16368     gtk_tree_path_free (tmppath);
16369
16370   return TRUE;
16371 }
16372
16373 static gboolean
16374 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16375                                     gint        x,
16376                                     gint        y,
16377                                     gboolean    keyboard_tip,
16378                                     GtkTooltip *tooltip,
16379                                     gpointer    data)
16380 {
16381   GValue value = G_VALUE_INIT;
16382   GValue transformed = G_VALUE_INIT;
16383   GtkTreeIter iter;
16384   GtkTreePath *path;
16385   GtkTreeModel *model;
16386   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16387
16388   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16389                                           &x, &y,
16390                                           keyboard_tip,
16391                                           &model, &path, &iter))
16392     return FALSE;
16393
16394   gtk_tree_model_get_value (model, &iter,
16395                             tree_view->priv->tooltip_column, &value);
16396
16397   g_value_init (&transformed, G_TYPE_STRING);
16398
16399   if (!g_value_transform (&value, &transformed))
16400     {
16401       g_value_unset (&value);
16402       gtk_tree_path_free (path);
16403
16404       return FALSE;
16405     }
16406
16407   g_value_unset (&value);
16408
16409   if (!g_value_get_string (&transformed))
16410     {
16411       g_value_unset (&transformed);
16412       gtk_tree_path_free (path);
16413
16414       return FALSE;
16415     }
16416
16417   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16418   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16419
16420   gtk_tree_path_free (path);
16421   g_value_unset (&transformed);
16422
16423   return TRUE;
16424 }
16425
16426 /**
16427  * gtk_tree_view_set_tooltip_column:
16428  * @tree_view: a #GtkTreeView
16429  * @column: an integer, which is a valid column number for @tree_view's model
16430  *
16431  * If you only plan to have simple (text-only) tooltips on full rows, you
16432  * can use this function to have #GtkTreeView handle these automatically
16433  * for you. @column should be set to the column in @tree_view's model
16434  * containing the tooltip texts, or -1 to disable this feature.
16435  *
16436  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16437  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16438  *
16439  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16440  * so &amp;, &lt;, etc have to be escaped in the text.
16441  *
16442  * Since: 2.12
16443  */
16444 void
16445 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16446                                   gint         column)
16447 {
16448   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16449
16450   if (column == tree_view->priv->tooltip_column)
16451     return;
16452
16453   if (column == -1)
16454     {
16455       g_signal_handlers_disconnect_by_func (tree_view,
16456                                             gtk_tree_view_set_tooltip_query_cb,
16457                                             NULL);
16458       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16459     }
16460   else
16461     {
16462       if (tree_view->priv->tooltip_column == -1)
16463         {
16464           g_signal_connect (tree_view, "query-tooltip",
16465                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16466           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16467         }
16468     }
16469
16470   tree_view->priv->tooltip_column = column;
16471   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16472 }
16473
16474 /**
16475  * gtk_tree_view_get_tooltip_column:
16476  * @tree_view: a #GtkTreeView
16477  *
16478  * Returns the column of @tree_view's model which is being used for
16479  * displaying tooltips on @tree_view's rows.
16480  *
16481  * Return value: the index of the tooltip column that is currently being
16482  * used, or -1 if this is disabled.
16483  *
16484  * Since: 2.12
16485  */
16486 gint
16487 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16488 {
16489   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16490
16491   return tree_view->priv->tooltip_column;
16492 }