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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtktypebuiltins.h"
  52 #include "gtkmain.h"
  53 #include "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155 typedef enum {
 156   CLEAR_AND_SELECT = (1 << 0),
 157   CLAMP_NODE       = (1 << 1),
 158   CURSOR_INVALID   = (1 << 2)
 159 } SetCursorFlags;
 160
 161  /* This lovely little value is used to determine how far away from the title bar
 162   * you can move the mouse and still have a column drag work.
 163   */
 164 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 165
 166 #ifdef __GNUC__
 167
 168 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 169      if (!(expr))                                                       \
 170        {                                                                \
 171          g_log (G_LOG_DOMAIN,                                           \
 172                 G_LOG_LEVEL_CRITICAL,                                   \
 173                 "%s (%s): assertion `%s' failed.\n"                     \
 174                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 175                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 176                 "without letting the view know.  Any display from now on is likely to\n"  \
 177                 "be incorrect.\n",                                                        \
 178                 G_STRLOC,                                               \
 179                 G_STRFUNC,                                              \
 180                 #expr);                                                 \
 181          return ret;                                                    \
 182        };                               }G_STMT_END
 183
 184 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 185      if (!(expr))                                                       \
 186        {                                                                \
 187          g_log (G_LOG_DOMAIN,                                           \
 188                 G_LOG_LEVEL_CRITICAL,                                   \
 189                 "%s (%s): assertion `%s' failed.\n"                     \
 190                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 191                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 192                 "without letting the view know.  Any display from now on is likely to\n"  \
 193                 "be incorrect.\n",                                                        \
 194                 G_STRLOC,                                               \
 195                 G_STRFUNC,                                              \
 196                 #expr);                                                 \
 197          return;                                                        \
 198        };                               }G_STMT_END
 199
 200 #else
 201
 202 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 203      if (!(expr))                                                       \
 204        {                                                                \
 205          g_log (G_LOG_DOMAIN,                                           \
 206                 G_LOG_LEVEL_CRITICAL,                                   \
 207                 "file %s: line %d: assertion `%s' failed.\n"       \
 208                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 209                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 210                 "without letting the view know.  Any display from now on is likely to\n"  \
 211                 "be incorrect.\n",                                                        \
 212                 __FILE__,                                               \
 213                 __LINE__,                                               \
 214                 #expr);                                                 \
 215          return ret;                                                    \
 216        };                               }G_STMT_END
 217
 218 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 219      if (!(expr))                                                       \
 220        {                                                                \
 221          g_log (G_LOG_DOMAIN,                                           \
 222                 G_LOG_LEVEL_CRITICAL,                                   \
 223                 "file %s: line %d: assertion '%s' failed.\n"            \
 224                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 225                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 226                 "without letting the view know.  Any display from now on is likely to\n"  \
 227                 "be incorrect.\n",                                                        \
 228                 __FILE__,                                               \
 229                 __LINE__,                                               \
 230                 #expr);                                                 \
 231          return;                                                        \
 232        };                               }G_STMT_END
 233 #endif
 234
 235 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 236 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 237 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 238 #define SCROLL_EDGE_SIZE 15
 239 #define EXPANDER_EXTRA_PADDING 4
 240 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 241 #define AUTO_EXPAND_TIMEOUT 500
 242
 243 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 244  * vice versa.
 245  */
 246 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 247 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 248
 249 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 250 struct _GtkTreeViewColumnReorder
 251 {
 252   gint left_align;
 253   gint right_align;
 254   GtkTreeViewColumn *left_column;
 255   GtkTreeViewColumn *right_column;
 256 };
 257
 258 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 259 struct _GtkTreeViewChild
 260 {
 261   GtkWidget *widget;
 262   gint x;
 263   gint y;
 264   gint width;
 265   gint height;
 266 };
 267
 268
 269 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 270 struct _TreeViewDragInfo
 271 {
 272   GdkModifierType start_button_mask;
 273   GtkTargetList *_unused_source_target_list;
 274   GdkDragAction source_actions;
 275
 276   GtkTargetList *_unused_dest_target_list;
 277
 278   guint source_set : 1;
 279   guint dest_set : 1;
 280 };
 281
 282
 283 struct _GtkTreeViewPrivate
 284 {
 285   GtkTreeModel *model;
 286
 287   /* tree information */
 288   GtkRBTree *tree;
 289
 290   /* Container info */
 291   GList *children;
 292   gint width;
 293   gint height;
 294
 295   /* Adjustments */
 296   GtkAdjustment *hadjustment;
 297   GtkAdjustment *vadjustment;
 298   gint           min_display_width;
 299   gint           min_display_height;
 300
 301   /* Sub windows */
 302   GdkWindow *bin_window;
 303   GdkWindow *header_window;
 304
 305   /* Scroll position state keeping */
 306   GtkTreeRowReference *top_row;
 307   gint top_row_dy;
 308   /* dy == y pos of top_row + top_row_dy */
 309   /* we cache it for simplicity of the code */
 310   gint dy;
 311
 312   guint presize_handler_timer;
 313   guint validate_rows_timer;
 314   guint scroll_sync_timer;
 315
 316   /* Indentation and expander layout */
 317   gint expander_size;
 318   GtkTreeViewColumn *expander_column;
 319
 320   gint level_indentation;
 321
 322   /* Key navigation (focus), selection */
 323   gint cursor_offset;
 324
 325   GtkTreeRowReference *anchor;
 326   GtkRBNode *cursor_node;
 327   GtkRBTree *cursor_tree;
 328
 329   GtkTreeViewColumn *focus_column;
 330
 331   /* Current pressed node, previously pressed, prelight */
 332   GtkRBNode *button_pressed_node;
 333   GtkRBTree *button_pressed_tree;
 334
 335   gint pressed_button;
 336   gint press_start_x;
 337   gint press_start_y;
 338
 339   gint event_last_x;
 340   gint event_last_y;
 341
 342   guint last_button_time;
 343   gint last_button_x;
 344   gint last_button_y;
 345
 346   GtkRBNode *prelight_node;
 347   GtkRBTree *prelight_tree;
 348
 349   /* Cell Editing */
 350   GtkTreeViewColumn *edited_column;
 351
 352   /* The node that's currently being collapsed or expanded */
 353   GtkRBNode *expanded_collapsed_node;
 354   GtkRBTree *expanded_collapsed_tree;
 355   guint expand_collapse_timeout;
 356
 357   /* Auto expand/collapse timeout in hover mode */
 358   guint auto_expand_timeout;
 359
 360   /* Selection information */
 361   GtkTreeSelection *selection;
 362
 363   /* Header information */
 364   gint n_columns;
 365   GList *columns;
 366   gint header_height;
 367
 368   GtkTreeViewColumnDropFunc column_drop_func;
 369   gpointer column_drop_func_data;
 370   GDestroyNotify column_drop_func_data_destroy;
 371   GList *column_drag_info;
 372   GtkTreeViewColumnReorder *cur_reorder;
 373
 374   gint prev_width_before_expander;
 375
 376   /* Interactive Header reordering */
 377   GdkWindow *drag_window;
 378   GdkWindow *drag_highlight_window;
 379   GtkTreeViewColumn *drag_column;
 380   gint drag_column_x;
 381
 382   /* Interactive Header Resizing */
 383   gint drag_pos;
 384   gint x_drag;
 385
 386   /* Non-interactive Header Resizing, expand flag support */
 387   gint prev_width;
 388
 389   gint last_extra_space;
 390   gint last_extra_space_per_column;
 391   gint last_number_of_expand_columns;
 392
 393   /* ATK Hack */
 394   GtkTreeDestroyCountFunc destroy_count_func;
 395   gpointer destroy_count_data;
 396   GDestroyNotify destroy_count_destroy;
 397
 398   /* Scroll timeout (e.g. during dnd, rubber banding) */
 399   guint scroll_timeout;
 400
 401   /* Row drag-and-drop */
 402   GtkTreeRowReference *drag_dest_row;
 403   GtkTreeViewDropPosition drag_dest_pos;
 404   guint open_dest_timeout;
 405
 406   /* Rubber banding */
 407   gint rubber_band_status;
 408   gint rubber_band_x;
 409   gint rubber_band_y;
 410   gint rubber_band_extend;
 411   gint rubber_band_modify;
 412
 413   GtkRBNode *rubber_band_start_node;
 414   GtkRBTree *rubber_band_start_tree;
 415
 416   GtkRBNode *rubber_band_end_node;
 417   GtkRBTree *rubber_band_end_tree;
 418
 419   /* fixed height */
 420   gint fixed_height;
 421
 422   /* Scroll-to functionality when unrealized */
 423   GtkTreeRowReference *scroll_to_path;
 424   GtkTreeViewColumn *scroll_to_column;
 425   gfloat scroll_to_row_align;
 426   gfloat scroll_to_col_align;
 427
 428   /* Interactive search */
 429   gint selected_iter;
 430   gint search_column;
 431   GtkTreeViewSearchPositionFunc search_position_func;
 432   GtkTreeViewSearchEqualFunc search_equal_func;
 433   gpointer search_user_data;
 434   GDestroyNotify search_destroy;
 435   gpointer search_position_user_data;
 436   GDestroyNotify search_position_destroy;
 437   GtkWidget *search_window;
 438   GtkWidget *search_entry;
 439   gulong search_entry_changed_id;
 440   guint typeselect_flush_timeout;
 441
 442   /* Grid and tree lines */
 443   GtkTreeViewGridLines grid_lines;
 444   double grid_line_dashes[2];
 445   int grid_line_width;
 446
 447   gboolean tree_lines_enabled;
 448   double tree_line_dashes[2];
 449   int tree_line_width;
 450
 451   /* Row separators */
 452   GtkTreeViewRowSeparatorFunc row_separator_func;
 453   gpointer row_separator_data;
 454   GDestroyNotify row_separator_destroy;
 455
 456   /* Tooltip support */
 457   gint tooltip_column;
 458
 459   /* Here comes the bitfield */
 460   guint scroll_to_use_align : 1;
 461
 462   guint fixed_height_mode : 1;
 463   guint fixed_height_check : 1;
 464
 465   guint reorderable : 1;
 466   guint header_has_focus : 1;
 467   guint drag_column_window_state : 3;
 468   /* hint to display rows in alternating colors */
 469   guint has_rules : 1;
 470   guint mark_rows_col_dirty : 1;
 471
 472   /* for DnD */
 473   guint empty_view_drop : 1;
 474
 475   guint modify_selection_pressed : 1;
 476   guint extend_selection_pressed : 1;
 477
 478   guint init_hadjust_value : 1;
 479
 480   guint in_top_row_to_dy : 1;
 481
 482   /* interactive search */
 483   guint enable_search : 1;
 484   guint disable_popdown : 1;
 485   guint search_custom_entry_set : 1;
 486
 487   guint hover_selection : 1;
 488   guint hover_expand : 1;
 489   guint imcontext_changed : 1;
 490
 491   guint rubber_banding_enable : 1;
 492
 493   guint in_grab : 1;
 494
 495   guint post_validation_flag : 1;
 496
 497   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 498   guint search_entry_avoid_unhandled_binding : 1;
 499
 500   /* GtkScrollablePolicy needs to be checked when
 501    * driving the scrollable adjustment values */
 502   guint hscroll_policy : 1;
 503   guint vscroll_policy : 1;
 504
 505   /* GtkTreeView flags */
 506   guint is_list : 1;
 507   guint show_expanders : 1;
 508   guint in_column_resize : 1;
 509   guint arrow_prelit : 1;
 510   guint headers_visible : 1;
 511   guint draw_keyfocus : 1;
 512   guint model_setup : 1;
 513   guint in_column_drag : 1;
 514 };
 515
 516
 517 /* Signals */
 518 enum
 519 {
 520   ROW_ACTIVATED,
 521   TEST_EXPAND_ROW,
 522   TEST_COLLAPSE_ROW,
 523   ROW_EXPANDED,
 524   ROW_COLLAPSED,
 525   COLUMNS_CHANGED,
 526   CURSOR_CHANGED,
 527   MOVE_CURSOR,
 528   SELECT_ALL,
 529   UNSELECT_ALL,
 530   SELECT_CURSOR_ROW,
 531   TOGGLE_CURSOR_ROW,
 532   EXPAND_COLLAPSE_CURSOR_ROW,
 533   SELECT_CURSOR_PARENT,
 534   START_INTERACTIVE_SEARCH,
 535   LAST_SIGNAL
 536 };
 537
 538 /* Properties */
 539 enum {
 540   PROP_0,
 541   PROP_MODEL,
 542   PROP_HADJUSTMENT,
 543   PROP_VADJUSTMENT,
 544   PROP_HSCROLL_POLICY,
 545   PROP_VSCROLL_POLICY,
 546   PROP_HEADERS_VISIBLE,
 547   PROP_HEADERS_CLICKABLE,
 548   PROP_EXPANDER_COLUMN,
 549   PROP_REORDERABLE,
 550   PROP_RULES_HINT,
 551   PROP_ENABLE_SEARCH,
 552   PROP_SEARCH_COLUMN,
 553   PROP_FIXED_HEIGHT_MODE,
 554   PROP_HOVER_SELECTION,
 555   PROP_HOVER_EXPAND,
 556   PROP_SHOW_EXPANDERS,
 557   PROP_LEVEL_INDENTATION,
 558   PROP_RUBBER_BANDING,
 559   PROP_ENABLE_GRID_LINES,
 560   PROP_ENABLE_TREE_LINES,
 561   PROP_TOOLTIP_COLUMN
 562 };
 563
 564 /* object signals */
 565 static void     gtk_tree_view_finalize             (GObject          *object);
 566 static void     gtk_tree_view_set_property         (GObject         *object,
 567                                                     guint            prop_id,
 568                                                     const GValue    *value,
 569                                                     GParamSpec      *pspec);
 570 static void     gtk_tree_view_get_property         (GObject         *object,
 571                                                     guint            prop_id,
 572                                                     GValue          *value,
 573                                                     GParamSpec      *pspec);
 574
 575 /* gtkwidget signals */
 576 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 577 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 578 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 579 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 580 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 581                                                     gint             *minimum,
 582                                                     gint             *natural);
 583 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 584                                                     gint             *minimum,
 585                                                     gint             *natural);
 586 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 587                                                     GtkRequisition   *requisition,
 588                                                     gboolean          may_validate);
 589 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 590                                                     GtkAllocation    *allocation);
 591 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 592                                                     cairo_t          *cr);
 593 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 594                                                     GdkEventKey      *event);
 595 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 596                                                     GdkEventKey      *event);
 597 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 598                                                     GdkEventMotion   *event);
 599 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 600                                                     GdkEventCrossing *event);
 601 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 602                                                     GdkEventCrossing *event);
 603 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 604                                                     GdkEventButton   *event);
 605 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 606                                                     GdkEventButton   *event);
 607 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 608                                                     GdkEventGrabBroken *event);
 609 #if 0
 610 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 611                                                     GdkEventConfigure *event);
 612 #endif
 613
 614 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 615                                                          GtkWidget    *child);
 616
 617 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 618                                                     GtkWidget        *child);
 619 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 620                                                     GdkEventFocus    *event);
 621 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 622                                                     GtkDirectionType  direction);
 623 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 624 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 625 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 626                                                     gboolean          was_grabbed);
 627 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 628                                                     GtkStateFlags     previous_state);
 629
 630 /* container signals */
 631 static void     gtk_tree_view_remove               (GtkContainer     *container,
 632                                                     GtkWidget        *widget);
 633 static void     gtk_tree_view_forall               (GtkContainer     *container,
 634                                                     gboolean          include_internals,
 635                                                     GtkCallback       callback,
 636                                                     gpointer          callback_data);
 637
 638 /* Source side drag signals */
 639 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 640                                             GdkDragContext   *context);
 641 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 644                                             GdkDragContext   *context,
 645                                             GtkSelectionData *selection_data,
 646                                             guint             info,
 647                                             guint             time);
 648 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 649                                             GdkDragContext   *context);
 650
 651 /* Target side drag signals */
 652 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 653                                                   GdkDragContext   *context,
 654                                                   guint             time);
 655 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 656                                                   GdkDragContext   *context,
 657                                                   gint              x,
 658                                                   gint              y,
 659                                                   guint             time);
 660 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 661                                                   GdkDragContext   *context,
 662                                                   gint              x,
 663                                                   gint              y,
 664                                                   guint             time);
 665 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 666                                                   GdkDragContext   *context,
 667                                                   gint              x,
 668                                                   gint              y,
 669                                                   GtkSelectionData *selection_data,
 670                                                   guint             info,
 671                                                   guint             time);
 672
 673 /* tree_model signals */
 674 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 675                                                            GtkMovementStep  step,
 676                                                            gint             count);
 677 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 678 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 680                                                            gboolean         start_editing);
 681 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 682 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 683                                                                gboolean         logical,
 684                                                                gboolean         expand,
 685                                                                gboolean         open_all);
 686 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 687 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 688                                                            GtkTreePath     *path,
 689                                                            GtkTreeIter     *iter,
 690                                                            gpointer         data);
 691 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 692                                                            GtkTreePath     *path,
 693                                                            GtkTreeIter     *iter,
 694                                                            gpointer         data);
 695 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 696                                                            GtkTreePath     *path,
 697                                                            GtkTreeIter     *iter,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 700                                                            GtkTreePath     *path,
 701                                                            gpointer         data);
 702 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 703                                                            GtkTreePath     *parent,
 704                                                            GtkTreeIter     *iter,
 705                                                            gint            *new_order,
 706                                                            gpointer         data);
 707
 708 /* Incremental reflow */
 709 static gboolean validate_row             (GtkTreeView *tree_view,
 710                                           GtkRBTree   *tree,
 711                                           GtkRBNode   *node,
 712                                           GtkTreeIter *iter,
 713                                           GtkTreePath *path);
 714 static void     validate_visible_area    (GtkTreeView *tree_view);
 715 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 716 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 717                                           gboolean     size_request);
 718 static gboolean validate_rows            (GtkTreeView *tree_view);
 719 static gboolean presize_handler_callback (gpointer     data);
 720 static void     install_presize_handler  (GtkTreeView *tree_view);
 721 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 722 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 723                                              GtkTreePath *path,
 724                                              gint         offset);
 725 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 726 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 727 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 728
 729 /* Internal functions */
 730 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 731                                                               GtkTreeViewColumn  *column);
 732 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 733 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 734                                                               guint               keyval,
 735                                                               guint               modmask,
 736                                                               gboolean            add_shifted_binding,
 737                                                               GtkMovementStep     step,
 738                                                               gint                count);
 739 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 740                                                               GtkRBTree          *tree);
 741 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 742                                                               GtkTreePath        *path,
 743                                                               const GdkRectangle *clip_rect);
 744 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 745                                                               GtkRBTree          *tree,
 746                                                               GtkRBNode          *node);
 747 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 748                                                               cairo_t            *cr,
 749                                                               GtkRBTree          *tree,
 750                                                               GtkRBNode          *node);
 751 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 752                                                               GtkRBTree          *tree,
 753                                                               gint               *x1,
 754                                                               gint               *x2);
 755 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 756                                                               gint                i,
 757                                                               gint               *x);
 758 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 759                                                               GtkTreeView        *tree_view);
 760 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 761                                                               GtkRBTree          *tree,
 762                                                               GtkTreeIter        *iter,
 763                                                               gint                depth,
 764                                                               gboolean            recurse);
 765 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 766                                                               GtkRBTree          *tree,
 767                                                               GtkRBNode          *node);
 768 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 769                                                               GtkTreeViewColumn  *column,
 770                                                               gboolean            focus_to_cell);
 771 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 772                                                               GdkEventMotion     *event);
 773 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 774 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 775                                                               gint                count);
 776 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 777                                                               gint                count);
 778 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 779                                                               gint                count);
 780 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 781                                                               gint                count);
 782 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 783                                                               GtkTreePath        *path,
 784                                                               GtkRBTree          *tree,
 785                                                               GtkRBNode          *node,
 786                                                               gboolean            animate);
 787 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 788                                                               GtkTreePath        *path,
 789                                                               GtkRBTree          *tree,
 790                                                               GtkRBNode          *node,
 791                                                               gboolean            open_all,
 792                                                               gboolean            animate);
 793 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 794                                                               GtkTreePath        *path,
 795                                                               SetCursorFlags      flags);
 796 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 797 static void     column_sizing_notify                         (GObject            *object,
 798                                                               GParamSpec         *pspec,
 799                                                               gpointer            data);
 800 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 801 static void     update_prelight                              (GtkTreeView        *tree_view,
 802                                                               int                 x,
 803                                                               int                 y);
 804
 805 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 806
 807 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 808                                                               GtkRBTree   *tree,
 809                                                               GtkRBNode   *node,
 810                                                               gint         vertical_separator);
 811 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 812                                                               GtkRBNode   *node,
 813                                                               gint         vertical_separator);
 814
 815 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 816                                                               GtkRBTree   *tree,
 817                                                               GtkRBNode   *node);
 818 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 819                                                               GtkRBNode   *node);
 820
 821 /* interactive search */
 822 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 823 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 824                                                          GtkTreeView      *tree_view,
 825                                                          GdkDevice        *device);
 826 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 827                                                          GtkWidget        *search_dialog,
 828                                                          gpointer          user_data);
 829 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 830                                                          GtkMenu          *menu,
 831                                                          gpointer          data);
 832 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 833                                                          GtkTreeView      *tree_view);
 834 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 837 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 838                                                          gpointer          data);
 839 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 840                                                          GdkEventAny      *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 843                                                          GdkEventButton   *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 846                                                          GdkEventScroll   *event,
 847                                                          GtkTreeView      *tree_view);
 848 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 849                                                          GdkEventKey      *event,
 850                                                          GtkTreeView      *tree_view);
 851 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 852                                                          GtkTreeView      *tree_view,
 853                                                          gboolean          up);
 854 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 855                                                          gint              column,
 856                                                          const gchar      *key,
 857                                                          GtkTreeIter      *iter,
 858                                                          gpointer          search_data);
 859 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 860                                                          GtkTreeSelection *selection,
 861                                                          GtkTreeIter      *iter,
 862                                                          const gchar      *text,
 863                                                          gint             *count,
 864                                                          gint              n);
 865 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 866                                                          GtkTreeView      *tree_view);
 867 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 868                                                          GtkWidget        *child_widget,
 869                                                          gint              x,
 870                                                          gint              y,
 871                                                          gint              width,
 872                                                          gint              height);
 873 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 874                                                          GtkTreePath      *cursor_path,
 875                                                          gboolean          edit_only);
 876 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 877                                                          gboolean     cancel_editing);
 878 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 879                                                              GdkDevice   *device,
 880                                                              gboolean     keybinding);
 881 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 882 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 883                                                          GtkTreeViewColumn *column,
 884                                                          gint               drop_position);
 885
 886 /* GtkBuildable */
 887 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 888                                                             GtkBuilder        *builder,
 889                                                             GObject           *child,
 890                                                             const gchar       *type);
 891 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 892                                                             GtkBuilder        *builder,
 893                                                             const gchar       *childname);
 894 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 895
 896 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 897 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 898                                                         GtkAdjustment *adjustment);
 899 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 900 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 901                                                         GtkAdjustment *adjustment);
 902
 903 static gboolean scroll_row_timeout                   (gpointer     data);
 904 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 905 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 906
 907 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 908
 909 \f
 910
 911 /* GType Methods
 912  */
 913
 914 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 915                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 916                                                 gtk_tree_view_buildable_init)
 917                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 918
 919 static void
 920 gtk_tree_view_class_init (GtkTreeViewClass *class)
 921 {
 922   GObjectClass *o_class;
 923   GtkWidgetClass *widget_class;
 924   GtkContainerClass *container_class;
 925   GtkBindingSet *binding_set;
 926
 927   binding_set = gtk_binding_set_by_class (class);
 928
 929   o_class = (GObjectClass *) class;
 930   widget_class = (GtkWidgetClass *) class;
 931   container_class = (GtkContainerClass *) class;
 932
 933   /* GObject signals */
 934   o_class->set_property = gtk_tree_view_set_property;
 935   o_class->get_property = gtk_tree_view_get_property;
 936   o_class->finalize = gtk_tree_view_finalize;
 937
 938   /* GtkWidget signals */
 939   widget_class->destroy = gtk_tree_view_destroy;
 940   widget_class->map = gtk_tree_view_map;
 941   widget_class->realize = gtk_tree_view_realize;
 942   widget_class->unrealize = gtk_tree_view_unrealize;
 943   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 944   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 945   widget_class->size_allocate = gtk_tree_view_size_allocate;
 946   widget_class->button_press_event = gtk_tree_view_button_press;
 947   widget_class->button_release_event = gtk_tree_view_button_release;
 948   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 949   /*widget_class->configure_event = gtk_tree_view_configure;*/
 950   widget_class->motion_notify_event = gtk_tree_view_motion;
 951   widget_class->draw = gtk_tree_view_draw;
 952   widget_class->key_press_event = gtk_tree_view_key_press;
 953   widget_class->key_release_event = gtk_tree_view_key_release;
 954   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 955   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 956   widget_class->focus_out_event = gtk_tree_view_focus_out;
 957   widget_class->drag_begin = gtk_tree_view_drag_begin;
 958   widget_class->drag_end = gtk_tree_view_drag_end;
 959   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 960   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 961   widget_class->drag_leave = gtk_tree_view_drag_leave;
 962   widget_class->drag_motion = gtk_tree_view_drag_motion;
 963   widget_class->drag_drop = gtk_tree_view_drag_drop;
 964   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 965   widget_class->focus = gtk_tree_view_focus;
 966   widget_class->grab_focus = gtk_tree_view_grab_focus;
 967   widget_class->style_updated = gtk_tree_view_style_updated;
 968   widget_class->grab_notify = gtk_tree_view_grab_notify;
 969   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 970
 971   /* GtkContainer signals */
 972   container_class->remove = gtk_tree_view_remove;
 973   container_class->forall = gtk_tree_view_forall;
 974   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 975   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 976
 977   class->move_cursor = gtk_tree_view_real_move_cursor;
 978   class->select_all = gtk_tree_view_real_select_all;
 979   class->unselect_all = gtk_tree_view_real_unselect_all;
 980   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 981   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 982   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 983   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 984   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 985
 986   /* Properties */
 987
 988   g_object_class_install_property (o_class,
 989                                    PROP_MODEL,
 990                                    g_param_spec_object ("model",
 991                                                         P_("TreeView Model"),
 992                                                         P_("The model for the tree view"),
 993                                                         GTK_TYPE_TREE_MODEL,
 994                                                         GTK_PARAM_READWRITE));
 995
 996   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 997   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 998   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 999   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
1000
1001   g_object_class_install_property (o_class,
1002                                    PROP_HEADERS_VISIBLE,
1003                                    g_param_spec_boolean ("headers-visible",
1004                                                          P_("Headers Visible"),
1005                                                          P_("Show the column header buttons"),
1006                                                          TRUE,
1007                                                          GTK_PARAM_READWRITE));
1008
1009   g_object_class_install_property (o_class,
1010                                    PROP_HEADERS_CLICKABLE,
1011                                    g_param_spec_boolean ("headers-clickable",
1012                                                          P_("Headers Clickable"),
1013                                                          P_("Column headers respond to click events"),
1014                                                          TRUE,
1015                                                          GTK_PARAM_READWRITE));
1016
1017   g_object_class_install_property (o_class,
1018                                    PROP_EXPANDER_COLUMN,
1019                                    g_param_spec_object ("expander-column",
1020                                                         P_("Expander Column"),
1021                                                         P_("Set the column for the expander column"),
1022                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1023                                                         GTK_PARAM_READWRITE));
1024
1025   g_object_class_install_property (o_class,
1026                                    PROP_REORDERABLE,
1027                                    g_param_spec_boolean ("reorderable",
1028                                                          P_("Reorderable"),
1029                                                          P_("View is reorderable"),
1030                                                          FALSE,
1031                                                          GTK_PARAM_READWRITE));
1032
1033   g_object_class_install_property (o_class,
1034                                    PROP_RULES_HINT,
1035                                    g_param_spec_boolean ("rules-hint",
1036                                                          P_("Rules Hint"),
1037                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1038                                                          FALSE,
1039                                                          GTK_PARAM_READWRITE));
1040
1041     g_object_class_install_property (o_class,
1042                                      PROP_ENABLE_SEARCH,
1043                                      g_param_spec_boolean ("enable-search",
1044                                                            P_("Enable Search"),
1045                                                            P_("View allows user to search through columns interactively"),
1046                                                            TRUE,
1047                                                            GTK_PARAM_READWRITE));
1048
1049     g_object_class_install_property (o_class,
1050                                      PROP_SEARCH_COLUMN,
1051                                      g_param_spec_int ("search-column",
1052                                                        P_("Search Column"),
1053                                                        P_("Model column to search through during interactive search"),
1054                                                        -1,
1055                                                        G_MAXINT,
1056                                                        -1,
1057                                                        GTK_PARAM_READWRITE));
1058
1059     /**
1060      * GtkTreeView:fixed-height-mode:
1061      *
1062      * Setting the ::fixed-height-mode property to %TRUE speeds up
1063      * #GtkTreeView by assuming that all rows have the same height.
1064      * Only enable this option if all rows are the same height.
1065      * Please see gtk_tree_view_set_fixed_height_mode() for more
1066      * information on this option.
1067      *
1068      * Since: 2.4
1069      **/
1070     g_object_class_install_property (o_class,
1071                                      PROP_FIXED_HEIGHT_MODE,
1072                                      g_param_spec_boolean ("fixed-height-mode",
1073                                                            P_("Fixed Height Mode"),
1074                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1075                                                            FALSE,
1076                                                            GTK_PARAM_READWRITE));
1077
1078     /**
1079      * GtkTreeView:hover-selection:
1080      *
1081      * Enables or disables the hover selection mode of @tree_view.
1082      * Hover selection makes the selected row follow the pointer.
1083      * Currently, this works only for the selection modes
1084      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1085      *
1086      * This mode is primarily intended for treeviews in popups, e.g.
1087      * in #GtkComboBox or #GtkEntryCompletion.
1088      *
1089      * Since: 2.6
1090      */
1091     g_object_class_install_property (o_class,
1092                                      PROP_HOVER_SELECTION,
1093                                      g_param_spec_boolean ("hover-selection",
1094                                                            P_("Hover Selection"),
1095                                                            P_("Whether the selection should follow the pointer"),
1096                                                            FALSE,
1097                                                            GTK_PARAM_READWRITE));
1098
1099     /**
1100      * GtkTreeView:hover-expand:
1101      *
1102      * Enables or disables the hover expansion mode of @tree_view.
1103      * Hover expansion makes rows expand or collapse if the pointer moves
1104      * over them.
1105      *
1106      * This mode is primarily intended for treeviews in popups, e.g.
1107      * in #GtkComboBox or #GtkEntryCompletion.
1108      *
1109      * Since: 2.6
1110      */
1111     g_object_class_install_property (o_class,
1112                                      PROP_HOVER_EXPAND,
1113                                      g_param_spec_boolean ("hover-expand",
1114                                                            P_("Hover Expand"),
1115                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1116                                                            FALSE,
1117                                                            GTK_PARAM_READWRITE));
1118
1119     /**
1120      * GtkTreeView:show-expanders:
1121      *
1122      * %TRUE if the view has expanders.
1123      *
1124      * Since: 2.12
1125      */
1126     g_object_class_install_property (o_class,
1127                                      PROP_SHOW_EXPANDERS,
1128                                      g_param_spec_boolean ("show-expanders",
1129                                                            P_("Show Expanders"),
1130                                                            P_("View has expanders"),
1131                                                            TRUE,
1132                                                            GTK_PARAM_READWRITE));
1133
1134     /**
1135      * GtkTreeView:level-indentation:
1136      *
1137      * Extra indentation for each level.
1138      *
1139      * Since: 2.12
1140      */
1141     g_object_class_install_property (o_class,
1142                                      PROP_LEVEL_INDENTATION,
1143                                      g_param_spec_int ("level-indentation",
1144                                                        P_("Level Indentation"),
1145                                                        P_("Extra indentation for each level"),
1146                                                        0,
1147                                                        G_MAXINT,
1148                                                        0,
1149                                                        GTK_PARAM_READWRITE));
1150
1151     g_object_class_install_property (o_class,
1152                                      PROP_RUBBER_BANDING,
1153                                      g_param_spec_boolean ("rubber-banding",
1154                                                            P_("Rubber Banding"),
1155                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1156                                                            FALSE,
1157                                                            GTK_PARAM_READWRITE));
1158
1159     g_object_class_install_property (o_class,
1160                                      PROP_ENABLE_GRID_LINES,
1161                                      g_param_spec_enum ("enable-grid-lines",
1162                                                         P_("Enable Grid Lines"),
1163                                                         P_("Whether grid lines should be drawn in the tree view"),
1164                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1165                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1166                                                         GTK_PARAM_READWRITE));
1167
1168     g_object_class_install_property (o_class,
1169                                      PROP_ENABLE_TREE_LINES,
1170                                      g_param_spec_boolean ("enable-tree-lines",
1171                                                            P_("Enable Tree Lines"),
1172                                                            P_("Whether tree lines should be drawn in the tree view"),
1173                                                            FALSE,
1174                                                            GTK_PARAM_READWRITE));
1175
1176     g_object_class_install_property (o_class,
1177                                      PROP_TOOLTIP_COLUMN,
1178                                      g_param_spec_int ("tooltip-column",
1179                                                        P_("Tooltip Column"),
1180                                                        P_("The column in the model containing the tooltip texts for the rows"),
1181                                                        -1,
1182                                                        G_MAXINT,
1183                                                        -1,
1184                                                        GTK_PARAM_READWRITE));
1185
1186   /* Style properties */
1187 #define _TREE_VIEW_EXPANDER_SIZE 14
1188 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1189 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1190
1191   gtk_widget_class_install_style_property (widget_class,
1192                                            g_param_spec_int ("expander-size",
1193                                                              P_("Expander Size"),
1194                                                              P_("Size of the expander arrow"),
1195                                                              0,
1196                                                              G_MAXINT,
1197                                                              _TREE_VIEW_EXPANDER_SIZE,
1198                                                              GTK_PARAM_READABLE));
1199
1200   gtk_widget_class_install_style_property (widget_class,
1201                                            g_param_spec_int ("vertical-separator",
1202                                                              P_("Vertical Separator Width"),
1203                                                              P_("Vertical space between cells.  Must be an even number"),
1204                                                              0,
1205                                                              G_MAXINT,
1206                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1207                                                              GTK_PARAM_READABLE));
1208
1209   gtk_widget_class_install_style_property (widget_class,
1210                                            g_param_spec_int ("horizontal-separator",
1211                                                              P_("Horizontal Separator Width"),
1212                                                              P_("Horizontal space between cells.  Must be an even number"),
1213                                                              0,
1214                                                              G_MAXINT,
1215                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1216                                                              GTK_PARAM_READABLE));
1217
1218   gtk_widget_class_install_style_property (widget_class,
1219                                            g_param_spec_boolean ("allow-rules",
1220                                                                  P_("Allow Rules"),
1221                                                                  P_("Allow drawing of alternating color rows"),
1222                                                                  TRUE,
1223                                                                  GTK_PARAM_READABLE));
1224
1225   gtk_widget_class_install_style_property (widget_class,
1226                                            g_param_spec_boolean ("indent-expanders",
1227                                                                  P_("Indent Expanders"),
1228                                                                  P_("Make the expanders indented"),
1229                                                                  TRUE,
1230                                                                  GTK_PARAM_READABLE));
1231
1232   gtk_widget_class_install_style_property (widget_class,
1233                                            g_param_spec_boxed ("even-row-color",
1234                                                                P_("Even Row Color"),
1235                                                                P_("Color to use for even rows"),
1236                                                                GDK_TYPE_COLOR,
1237                                                                GTK_PARAM_READABLE));
1238
1239   gtk_widget_class_install_style_property (widget_class,
1240                                            g_param_spec_boxed ("odd-row-color",
1241                                                                P_("Odd Row Color"),
1242                                                                P_("Color to use for odd rows"),
1243                                                                GDK_TYPE_COLOR,
1244                                                                GTK_PARAM_READABLE));
1245
1246   gtk_widget_class_install_style_property (widget_class,
1247                                            g_param_spec_int ("grid-line-width",
1248                                                              P_("Grid line width"),
1249                                                              P_("Width, in pixels, of the tree view grid lines"),
1250                                                              0, G_MAXINT, 1,
1251                                                              GTK_PARAM_READABLE));
1252
1253   gtk_widget_class_install_style_property (widget_class,
1254                                            g_param_spec_int ("tree-line-width",
1255                                                              P_("Tree line width"),
1256                                                              P_("Width, in pixels, of the tree view lines"),
1257                                                              0, G_MAXINT, 1,
1258                                                              GTK_PARAM_READABLE));
1259
1260   gtk_widget_class_install_style_property (widget_class,
1261                                            g_param_spec_string ("grid-line-pattern",
1262                                                                 P_("Grid line pattern"),
1263                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1264                                                                 "\1\1",
1265                                                                 GTK_PARAM_READABLE));
1266
1267   gtk_widget_class_install_style_property (widget_class,
1268                                            g_param_spec_string ("tree-line-pattern",
1269                                                                 P_("Tree line pattern"),
1270                                                                 P_("Dash pattern used to draw the tree view lines"),
1271                                                                 "\1\1",
1272                                                                 GTK_PARAM_READABLE));
1273
1274   /* Signals */
1275   /**
1276    * GtkTreeView::row-activated:
1277    * @tree_view: the object on which the signal is emitted
1278    * @path: the #GtkTreePath for the activated row
1279    * @column: the #GtkTreeViewColumn in which the activation occurred
1280    *
1281    * The "row-activated" signal is emitted when the method
1282    * gtk_tree_view_row_activated() is called or the user double clicks
1283    * a treeview row. It is also emitted when a non-editable row is
1284    * selected and one of the keys: Space, Shift+Space, Return or
1285    * Enter is pressed.
1286    *
1287    * For selection handling refer to the <link linkend="TreeWidget">tree
1288    * widget conceptual overview</link> as well as #GtkTreeSelection.
1289    */
1290   tree_view_signals[ROW_ACTIVATED] =
1291     g_signal_new (I_("row-activated"),
1292                   G_TYPE_FROM_CLASS (o_class),
1293                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1294                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1295                   NULL, NULL,
1296                   _gtk_marshal_VOID__BOXED_OBJECT,
1297                   G_TYPE_NONE, 2,
1298                   GTK_TYPE_TREE_PATH,
1299                   GTK_TYPE_TREE_VIEW_COLUMN);
1300
1301   /**
1302    * GtkTreeView::test-expand-row:
1303    * @tree_view: the object on which the signal is emitted
1304    * @iter: the tree iter of the row to expand
1305    * @path: a tree path that points to the row
1306    *
1307    * The given row is about to be expanded (show its children nodes). Use this
1308    * signal if you need to control the expandability of individual rows.
1309    *
1310    * Returns: %FALSE to allow expansion, %TRUE to reject
1311    */
1312   tree_view_signals[TEST_EXPAND_ROW] =
1313     g_signal_new (I_("test-expand-row"),
1314                   G_TYPE_FROM_CLASS (o_class),
1315                   G_SIGNAL_RUN_LAST,
1316                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1317                   _gtk_boolean_handled_accumulator, NULL,
1318                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1319                   G_TYPE_BOOLEAN, 2,
1320                   GTK_TYPE_TREE_ITER,
1321                   GTK_TYPE_TREE_PATH);
1322
1323   /**
1324    * GtkTreeView::test-collapse-row:
1325    * @tree_view: the object on which the signal is emitted
1326    * @iter: the tree iter of the row to collapse
1327    * @path: a tree path that points to the row
1328    *
1329    * The given row is about to be collapsed (hide its children nodes). Use this
1330    * signal if you need to control the collapsibility of individual rows.
1331    *
1332    * Returns: %FALSE to allow collapsing, %TRUE to reject
1333    */
1334   tree_view_signals[TEST_COLLAPSE_ROW] =
1335     g_signal_new (I_("test-collapse-row"),
1336                   G_TYPE_FROM_CLASS (o_class),
1337                   G_SIGNAL_RUN_LAST,
1338                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1339                   _gtk_boolean_handled_accumulator, NULL,
1340                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1341                   G_TYPE_BOOLEAN, 2,
1342                   GTK_TYPE_TREE_ITER,
1343                   GTK_TYPE_TREE_PATH);
1344
1345   /**
1346    * GtkTreeView::row-expanded:
1347    * @tree_view: the object on which the signal is emitted
1348    * @iter: the tree iter of the expanded row
1349    * @path: a tree path that points to the row
1350    *
1351    * The given row has been expanded (child nodes are shown).
1352    */
1353   tree_view_signals[ROW_EXPANDED] =
1354     g_signal_new (I_("row-expanded"),
1355                   G_TYPE_FROM_CLASS (o_class),
1356                   G_SIGNAL_RUN_LAST,
1357                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1358                   NULL, NULL,
1359                   _gtk_marshal_VOID__BOXED_BOXED,
1360                   G_TYPE_NONE, 2,
1361                   GTK_TYPE_TREE_ITER,
1362                   GTK_TYPE_TREE_PATH);
1363
1364   /**
1365    * GtkTreeView::row-collapsed:
1366    * @tree_view: the object on which the signal is emitted
1367    * @iter: the tree iter of the collapsed row
1368    * @path: a tree path that points to the row
1369    *
1370    * The given row has been collapsed (child nodes are hidden).
1371    */
1372   tree_view_signals[ROW_COLLAPSED] =
1373     g_signal_new (I_("row-collapsed"),
1374                   G_TYPE_FROM_CLASS (o_class),
1375                   G_SIGNAL_RUN_LAST,
1376                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1377                   NULL, NULL,
1378                   _gtk_marshal_VOID__BOXED_BOXED,
1379                   G_TYPE_NONE, 2,
1380                   GTK_TYPE_TREE_ITER,
1381                   GTK_TYPE_TREE_PATH);
1382
1383   /**
1384    * GtkTreeView::columns-changed:
1385    * @tree_view: the object on which the signal is emitted
1386    *
1387    * The number of columns of the treeview has changed.
1388    */
1389   tree_view_signals[COLUMNS_CHANGED] =
1390     g_signal_new (I_("columns-changed"),
1391                   G_TYPE_FROM_CLASS (o_class),
1392                   G_SIGNAL_RUN_LAST,
1393                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1394                   NULL, NULL,
1395                   _gtk_marshal_VOID__VOID,
1396                   G_TYPE_NONE, 0);
1397
1398   /**
1399    * GtkTreeView::cursor-changed:
1400    * @tree_view: the object on which the signal is emitted
1401    *
1402    * The position of the cursor (focused cell) has changed.
1403    */
1404   tree_view_signals[CURSOR_CHANGED] =
1405     g_signal_new (I_("cursor-changed"),
1406                   G_TYPE_FROM_CLASS (o_class),
1407                   G_SIGNAL_RUN_LAST,
1408                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1409                   NULL, NULL,
1410                   _gtk_marshal_VOID__VOID,
1411                   G_TYPE_NONE, 0);
1412
1413   tree_view_signals[MOVE_CURSOR] =
1414     g_signal_new (I_("move-cursor"),
1415                   G_TYPE_FROM_CLASS (o_class),
1416                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1417                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1418                   NULL, NULL,
1419                   _gtk_marshal_BOOLEAN__ENUM_INT,
1420                   G_TYPE_BOOLEAN, 2,
1421                   GTK_TYPE_MOVEMENT_STEP,
1422                   G_TYPE_INT);
1423
1424   tree_view_signals[SELECT_ALL] =
1425     g_signal_new (I_("select-all"),
1426                   G_TYPE_FROM_CLASS (o_class),
1427                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1428                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1429                   NULL, NULL,
1430                   _gtk_marshal_BOOLEAN__VOID,
1431                   G_TYPE_BOOLEAN, 0);
1432
1433   tree_view_signals[UNSELECT_ALL] =
1434     g_signal_new (I_("unselect-all"),
1435                   G_TYPE_FROM_CLASS (o_class),
1436                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1437                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1438                   NULL, NULL,
1439                   _gtk_marshal_BOOLEAN__VOID,
1440                   G_TYPE_BOOLEAN, 0);
1441
1442   tree_view_signals[SELECT_CURSOR_ROW] =
1443     g_signal_new (I_("select-cursor-row"),
1444                   G_TYPE_FROM_CLASS (o_class),
1445                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1446                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1447                   NULL, NULL,
1448                   _gtk_marshal_BOOLEAN__BOOLEAN,
1449                   G_TYPE_BOOLEAN, 1,
1450                   G_TYPE_BOOLEAN);
1451
1452   tree_view_signals[TOGGLE_CURSOR_ROW] =
1453     g_signal_new (I_("toggle-cursor-row"),
1454                   G_TYPE_FROM_CLASS (o_class),
1455                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1456                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1457                   NULL, NULL,
1458                   _gtk_marshal_BOOLEAN__VOID,
1459                   G_TYPE_BOOLEAN, 0);
1460
1461   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1462     g_signal_new (I_("expand-collapse-cursor-row"),
1463                   G_TYPE_FROM_CLASS (o_class),
1464                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1465                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1466                   NULL, NULL,
1467                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1468                   G_TYPE_BOOLEAN, 3,
1469                   G_TYPE_BOOLEAN,
1470                   G_TYPE_BOOLEAN,
1471                   G_TYPE_BOOLEAN);
1472
1473   tree_view_signals[SELECT_CURSOR_PARENT] =
1474     g_signal_new (I_("select-cursor-parent"),
1475                   G_TYPE_FROM_CLASS (o_class),
1476                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1477                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1478                   NULL, NULL,
1479                   _gtk_marshal_BOOLEAN__VOID,
1480                   G_TYPE_BOOLEAN, 0);
1481
1482   tree_view_signals[START_INTERACTIVE_SEARCH] =
1483     g_signal_new (I_("start-interactive-search"),
1484                   G_TYPE_FROM_CLASS (o_class),
1485                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1486                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1487                   NULL, NULL,
1488                   _gtk_marshal_BOOLEAN__VOID,
1489                   G_TYPE_BOOLEAN, 0);
1490
1491   /* Key bindings */
1492   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1493                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1494   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1495                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1496
1497   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1498                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1503                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1504
1505   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1506                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1507
1508   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1509                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1510   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1511                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1512
1513   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1514                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1515   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1516                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1517
1518   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1519                                   GTK_MOVEMENT_PAGES, -1);
1520   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1521                                   GTK_MOVEMENT_PAGES, -1);
1522
1523   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1524                                   GTK_MOVEMENT_PAGES, 1);
1525   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1526                                   GTK_MOVEMENT_PAGES, 1);
1527
1528
1529   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1530                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1531                                 G_TYPE_INT, 1);
1532
1533   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1534                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1535                                 G_TYPE_INT, -1);
1536
1537   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1538                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1539                                 G_TYPE_INT, 1);
1540
1541   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1542                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1543                                 G_TYPE_INT, -1);
1544
1545   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1546                                 "move-cursor", 2,
1547                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1548                                 G_TYPE_INT, 1);
1549
1550   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1551                                 "move-cursor", 2,
1552                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1553                                 G_TYPE_INT, -1);
1554
1555   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1556                                 "move-cursor", 2,
1557                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1558                                 G_TYPE_INT, 1);
1559
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1561                                 "move-cursor", 2,
1562                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1563                                 G_TYPE_INT, -1);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1569   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1570
1571   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1572   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1573
1574   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1575                                 G_TYPE_BOOLEAN, TRUE);
1576   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1577                                 G_TYPE_BOOLEAN, TRUE);
1578
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1584                                 G_TYPE_BOOLEAN, TRUE);
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1586                                 G_TYPE_BOOLEAN, TRUE);
1587   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1588                                 G_TYPE_BOOLEAN, TRUE);
1589
1590   /* expand and collapse rows */
1591   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, FALSE);
1595
1596   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1597                                 "expand-collapse-cursor-row", 3,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE,
1600                                 G_TYPE_BOOLEAN, TRUE);
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, TRUE,
1605                                 G_TYPE_BOOLEAN, TRUE);
1606
1607   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1608                                 "expand-collapse-cursor-row", 3,
1609                                 G_TYPE_BOOLEAN, TRUE,
1610                                 G_TYPE_BOOLEAN, FALSE,
1611                                 G_TYPE_BOOLEAN, FALSE);
1612   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1613                                 "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, FALSE,
1616                                 G_TYPE_BOOLEAN, FALSE);
1617
1618   /* Not doable on US keyboards */
1619   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1620                                 G_TYPE_BOOLEAN, TRUE,
1621                                 G_TYPE_BOOLEAN, TRUE,
1622                                 G_TYPE_BOOLEAN, TRUE);
1623   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1624                                 G_TYPE_BOOLEAN, TRUE,
1625                                 G_TYPE_BOOLEAN, TRUE,
1626                                 G_TYPE_BOOLEAN, FALSE);
1627   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1628                                 G_TYPE_BOOLEAN, TRUE,
1629                                 G_TYPE_BOOLEAN, TRUE,
1630                                 G_TYPE_BOOLEAN, TRUE);
1631   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE,
1634                                 G_TYPE_BOOLEAN, TRUE);
1635   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1636                                 "expand-collapse-cursor-row", 3,
1637                                 G_TYPE_BOOLEAN, FALSE,
1638                                 G_TYPE_BOOLEAN, TRUE,
1639                                 G_TYPE_BOOLEAN, TRUE);
1640   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1652                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1653                                 "expand-collapse-cursor-row", 3,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, TRUE,
1656                                 G_TYPE_BOOLEAN, TRUE);
1657
1658   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1659                                 G_TYPE_BOOLEAN, TRUE,
1660                                 G_TYPE_BOOLEAN, FALSE,
1661                                 G_TYPE_BOOLEAN, FALSE);
1662   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1663                                 G_TYPE_BOOLEAN, TRUE,
1664                                 G_TYPE_BOOLEAN, FALSE,
1665                                 G_TYPE_BOOLEAN, TRUE);
1666   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1667                                 G_TYPE_BOOLEAN, TRUE,
1668                                 G_TYPE_BOOLEAN, FALSE,
1669                                 G_TYPE_BOOLEAN, FALSE);
1670   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1671                                 G_TYPE_BOOLEAN, TRUE,
1672                                 G_TYPE_BOOLEAN, FALSE,
1673                                 G_TYPE_BOOLEAN, TRUE);
1674   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1675                                 "expand-collapse-cursor-row", 3,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, FALSE,
1678                                 G_TYPE_BOOLEAN, TRUE);
1679   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1691                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1692                                 "expand-collapse-cursor-row", 3,
1693                                 G_TYPE_BOOLEAN, FALSE,
1694                                 G_TYPE_BOOLEAN, FALSE,
1695                                 G_TYPE_BOOLEAN, TRUE);
1696
1697   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1698   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1699
1700   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1701
1702   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1703
1704   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1705
1706   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1707 }
1708
1709 static void
1710 gtk_tree_view_init (GtkTreeView *tree_view)
1711 {
1712   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1713
1714   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1715   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1716
1717   tree_view->priv->show_expanders = TRUE;
1718   tree_view->priv->draw_keyfocus = TRUE;
1719   tree_view->priv->headers_visible = TRUE;
1720
1721   /* We need some padding */
1722   tree_view->priv->dy = 0;
1723   tree_view->priv->cursor_offset = 0;
1724   tree_view->priv->n_columns = 0;
1725   tree_view->priv->header_height = 1;
1726   tree_view->priv->x_drag = 0;
1727   tree_view->priv->drag_pos = -1;
1728   tree_view->priv->header_has_focus = FALSE;
1729   tree_view->priv->pressed_button = -1;
1730   tree_view->priv->press_start_x = -1;
1731   tree_view->priv->press_start_y = -1;
1732   tree_view->priv->reorderable = FALSE;
1733   tree_view->priv->presize_handler_timer = 0;
1734   tree_view->priv->scroll_sync_timer = 0;
1735   tree_view->priv->fixed_height = -1;
1736   tree_view->priv->fixed_height_mode = FALSE;
1737   tree_view->priv->fixed_height_check = 0;
1738   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1739   tree_view->priv->enable_search = TRUE;
1740   tree_view->priv->search_column = -1;
1741   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1742   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1743   tree_view->priv->search_custom_entry_set = FALSE;
1744   tree_view->priv->typeselect_flush_timeout = 0;
1745   tree_view->priv->init_hadjust_value = TRUE;
1746   tree_view->priv->width = 0;
1747
1748   tree_view->priv->hover_selection = FALSE;
1749   tree_view->priv->hover_expand = FALSE;
1750
1751   tree_view->priv->level_indentation = 0;
1752
1753   tree_view->priv->rubber_banding_enable = FALSE;
1754
1755   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1756   tree_view->priv->tree_lines_enabled = FALSE;
1757
1758   tree_view->priv->tooltip_column = -1;
1759
1760   tree_view->priv->post_validation_flag = FALSE;
1761
1762   tree_view->priv->last_button_x = -1;
1763   tree_view->priv->last_button_y = -1;
1764
1765   tree_view->priv->event_last_x = -10000;
1766   tree_view->priv->event_last_y = -10000;
1767
1768   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1769   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1770 }
1771
1772 \f
1773
1774 /* GObject Methods
1775  */
1776
1777 static void
1778 gtk_tree_view_set_property (GObject         *object,
1779                             guint            prop_id,
1780                             const GValue    *value,
1781                             GParamSpec      *pspec)
1782 {
1783   GtkTreeView *tree_view;
1784
1785   tree_view = GTK_TREE_VIEW (object);
1786
1787   switch (prop_id)
1788     {
1789     case PROP_MODEL:
1790       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HADJUSTMENT:
1793       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1794       break;
1795     case PROP_VADJUSTMENT:
1796       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1797       break;
1798     case PROP_HSCROLL_POLICY:
1799       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1800       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1801       break;
1802     case PROP_VSCROLL_POLICY:
1803       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1804       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1805       break;
1806     case PROP_HEADERS_VISIBLE:
1807       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1808       break;
1809     case PROP_HEADERS_CLICKABLE:
1810       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_EXPANDER_COLUMN:
1813       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1814       break;
1815     case PROP_REORDERABLE:
1816       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_RULES_HINT:
1819       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1820       break;
1821     case PROP_ENABLE_SEARCH:
1822       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_SEARCH_COLUMN:
1825       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1826       break;
1827     case PROP_FIXED_HEIGHT_MODE:
1828       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1829       break;
1830     case PROP_HOVER_SELECTION:
1831       tree_view->priv->hover_selection = g_value_get_boolean (value);
1832       break;
1833     case PROP_HOVER_EXPAND:
1834       tree_view->priv->hover_expand = g_value_get_boolean (value);
1835       break;
1836     case PROP_SHOW_EXPANDERS:
1837       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1838       break;
1839     case PROP_LEVEL_INDENTATION:
1840       tree_view->priv->level_indentation = g_value_get_int (value);
1841       break;
1842     case PROP_RUBBER_BANDING:
1843       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1844       break;
1845     case PROP_ENABLE_GRID_LINES:
1846       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1847       break;
1848     case PROP_ENABLE_TREE_LINES:
1849       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1850       break;
1851     case PROP_TOOLTIP_COLUMN:
1852       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1853       break;
1854     default:
1855       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1856       break;
1857     }
1858 }
1859
1860 static void
1861 gtk_tree_view_get_property (GObject    *object,
1862                             guint       prop_id,
1863                             GValue     *value,
1864                             GParamSpec *pspec)
1865 {
1866   GtkTreeView *tree_view;
1867
1868   tree_view = GTK_TREE_VIEW (object);
1869
1870   switch (prop_id)
1871     {
1872     case PROP_MODEL:
1873       g_value_set_object (value, tree_view->priv->model);
1874       break;
1875     case PROP_HADJUSTMENT:
1876       g_value_set_object (value, tree_view->priv->hadjustment);
1877       break;
1878     case PROP_VADJUSTMENT:
1879       g_value_set_object (value, tree_view->priv->vadjustment);
1880       break;
1881     case PROP_HSCROLL_POLICY:
1882       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1883       break;
1884     case PROP_VSCROLL_POLICY:
1885       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1886       break;
1887     case PROP_HEADERS_VISIBLE:
1888       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1889       break;
1890     case PROP_HEADERS_CLICKABLE:
1891       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1892       break;
1893     case PROP_EXPANDER_COLUMN:
1894       g_value_set_object (value, tree_view->priv->expander_column);
1895       break;
1896     case PROP_REORDERABLE:
1897       g_value_set_boolean (value, tree_view->priv->reorderable);
1898       break;
1899     case PROP_RULES_HINT:
1900       g_value_set_boolean (value, tree_view->priv->has_rules);
1901       break;
1902     case PROP_ENABLE_SEARCH:
1903       g_value_set_boolean (value, tree_view->priv->enable_search);
1904       break;
1905     case PROP_SEARCH_COLUMN:
1906       g_value_set_int (value, tree_view->priv->search_column);
1907       break;
1908     case PROP_FIXED_HEIGHT_MODE:
1909       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1910       break;
1911     case PROP_HOVER_SELECTION:
1912       g_value_set_boolean (value, tree_view->priv->hover_selection);
1913       break;
1914     case PROP_HOVER_EXPAND:
1915       g_value_set_boolean (value, tree_view->priv->hover_expand);
1916       break;
1917     case PROP_SHOW_EXPANDERS:
1918       g_value_set_boolean (value, tree_view->priv->show_expanders);
1919       break;
1920     case PROP_LEVEL_INDENTATION:
1921       g_value_set_int (value, tree_view->priv->level_indentation);
1922       break;
1923     case PROP_RUBBER_BANDING:
1924       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1925       break;
1926     case PROP_ENABLE_GRID_LINES:
1927       g_value_set_enum (value, tree_view->priv->grid_lines);
1928       break;
1929     case PROP_ENABLE_TREE_LINES:
1930       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1931       break;
1932     case PROP_TOOLTIP_COLUMN:
1933       g_value_set_int (value, tree_view->priv->tooltip_column);
1934       break;
1935     default:
1936       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1937       break;
1938     }
1939 }
1940
1941 static void
1942 gtk_tree_view_finalize (GObject *object)
1943 {
1944   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1945 }
1946
1947
1948 static GtkBuildableIface *parent_buildable_iface;
1949
1950 static void
1951 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1952 {
1953   parent_buildable_iface = g_type_interface_peek_parent (iface);
1954   iface->add_child = gtk_tree_view_buildable_add_child;
1955   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1956 }
1957
1958 static void
1959 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1960                                    GtkBuilder  *builder,
1961                                    GObject     *child,
1962                                    const gchar *type)
1963 {
1964   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1965 }
1966
1967 static GObject *
1968 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1969                                             GtkBuilder        *builder,
1970                                             const gchar       *childname)
1971 {
1972     if (strcmp (childname, "selection") == 0)
1973       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1974
1975     return parent_buildable_iface->get_internal_child (buildable,
1976                                                        builder,
1977                                                        childname);
1978 }
1979
1980 /* GtkWidget Methods
1981  */
1982
1983 static void
1984 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1985 {
1986   _gtk_rbtree_free (tree_view->priv->tree);
1987
1988   tree_view->priv->tree = NULL;
1989   tree_view->priv->button_pressed_node = NULL;
1990   tree_view->priv->button_pressed_tree = NULL;
1991   tree_view->priv->prelight_tree = NULL;
1992   tree_view->priv->prelight_node = NULL;
1993   tree_view->priv->expanded_collapsed_node = NULL;
1994   tree_view->priv->expanded_collapsed_tree = NULL;
1995 }
1996
1997 static void
1998 gtk_tree_view_destroy (GtkWidget *widget)
1999 {
2000   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2001   GList *list;
2002
2003   gtk_tree_view_stop_editing (tree_view, TRUE);
2004
2005   if (tree_view->priv->columns != NULL)
2006     {
2007       list = tree_view->priv->columns;
2008       while (list)
2009         {
2010           GtkTreeViewColumn *column;
2011           column = GTK_TREE_VIEW_COLUMN (list->data);
2012           list = list->next;
2013           gtk_tree_view_remove_column (tree_view, column);
2014         }
2015       tree_view->priv->columns = NULL;
2016     }
2017
2018   if (tree_view->priv->tree != NULL)
2019     {
2020       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2021
2022       gtk_tree_view_free_rbtree (tree_view);
2023     }
2024
2025   if (tree_view->priv->selection != NULL)
2026     {
2027       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2028       g_object_unref (tree_view->priv->selection);
2029       tree_view->priv->selection = NULL;
2030     }
2031
2032   if (tree_view->priv->scroll_to_path != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2035       tree_view->priv->scroll_to_path = NULL;
2036     }
2037
2038   if (tree_view->priv->drag_dest_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2041       tree_view->priv->drag_dest_row = NULL;
2042     }
2043
2044   if (tree_view->priv->top_row != NULL)
2045     {
2046       gtk_tree_row_reference_free (tree_view->priv->top_row);
2047       tree_view->priv->top_row = NULL;
2048     }
2049
2050   if (tree_view->priv->column_drop_func_data &&
2051       tree_view->priv->column_drop_func_data_destroy)
2052     {
2053       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2054       tree_view->priv->column_drop_func_data = NULL;
2055     }
2056
2057   if (tree_view->priv->destroy_count_destroy &&
2058       tree_view->priv->destroy_count_data)
2059     {
2060       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2061       tree_view->priv->destroy_count_data = NULL;
2062     }
2063
2064   gtk_tree_row_reference_free (tree_view->priv->anchor);
2065   tree_view->priv->anchor = NULL;
2066
2067   /* destroy interactive search dialog */
2068   if (tree_view->priv->search_window)
2069     {
2070       gtk_widget_destroy (tree_view->priv->search_window);
2071       tree_view->priv->search_window = NULL;
2072       tree_view->priv->search_entry = NULL;
2073       if (tree_view->priv->typeselect_flush_timeout)
2074         {
2075           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2076           tree_view->priv->typeselect_flush_timeout = 0;
2077         }
2078     }
2079
2080   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2081     {
2082       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2083       tree_view->priv->search_user_data = NULL;
2084     }
2085
2086   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2087     {
2088       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2089       tree_view->priv->search_position_user_data = NULL;
2090     }
2091
2092   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2093     {
2094       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2095       tree_view->priv->row_separator_data = NULL;
2096     }
2097
2098   gtk_tree_view_set_model (tree_view, NULL);
2099
2100   if (tree_view->priv->hadjustment)
2101     {
2102       g_object_unref (tree_view->priv->hadjustment);
2103       tree_view->priv->hadjustment = NULL;
2104     }
2105   if (tree_view->priv->vadjustment)
2106     {
2107       g_object_unref (tree_view->priv->vadjustment);
2108       tree_view->priv->vadjustment = NULL;
2109     }
2110
2111   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2112 }
2113
2114 /* GtkWidget::map helper */
2115 static void
2116 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2117 {
2118   GList *list;
2119
2120   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2121
2122   if (tree_view->priv->headers_visible)
2123     {
2124       GtkTreeViewColumn *column;
2125       GtkWidget         *button;
2126       GdkWindow         *window;
2127
2128       for (list = tree_view->priv->columns; list; list = list->next)
2129         {
2130           column = list->data;
2131           button = gtk_tree_view_column_get_button (column);
2132
2133           if (gtk_tree_view_column_get_visible (column) && button)
2134             gtk_widget_show_now (button);
2135
2136           if (gtk_widget_get_visible (button) &&
2137               !gtk_widget_get_mapped (button))
2138             gtk_widget_map (button);
2139         }
2140       for (list = tree_view->priv->columns; list; list = list->next)
2141         {
2142           column = list->data;
2143           if (gtk_tree_view_column_get_visible (column) == FALSE)
2144             continue;
2145
2146           window = _gtk_tree_view_column_get_window (column);
2147           if (gtk_tree_view_column_get_resizable (column))
2148             {
2149               gdk_window_raise (window);
2150               gdk_window_show (window);
2151             }
2152           else
2153             gdk_window_hide (window);
2154         }
2155       gdk_window_show (tree_view->priv->header_window);
2156     }
2157 }
2158
2159 static void
2160 gtk_tree_view_map (GtkWidget *widget)
2161 {
2162   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2163   GList *tmp_list;
2164
2165   gtk_widget_set_mapped (widget, TRUE);
2166
2167   tmp_list = tree_view->priv->children;
2168   while (tmp_list)
2169     {
2170       GtkTreeViewChild *child = tmp_list->data;
2171       tmp_list = tmp_list->next;
2172
2173       if (gtk_widget_get_visible (child->widget))
2174         {
2175           if (!gtk_widget_get_mapped (child->widget))
2176             gtk_widget_map (child->widget);
2177         }
2178     }
2179   gdk_window_show (tree_view->priv->bin_window);
2180
2181   gtk_tree_view_map_buttons (tree_view);
2182
2183   gdk_window_show (gtk_widget_get_window (widget));
2184 }
2185
2186 static void
2187 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2188 {
2189   GtkStyleContext *context;
2190
2191   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2192
2193   gtk_style_context_save (context);
2194   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2195   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2196   gtk_style_context_restore (context);
2197
2198   gtk_style_context_set_background (context, tree_view->priv->header_window);
2199 }
2200
2201 static void
2202 gtk_tree_view_realize (GtkWidget *widget)
2203 {
2204   GtkAllocation allocation;
2205   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2206   GdkWindow *window;
2207   GdkWindowAttr attributes;
2208   GList *tmp_list;
2209   gint attributes_mask;
2210
2211   gtk_widget_set_realized (widget, TRUE);
2212
2213   gtk_widget_get_allocation (widget, &allocation);
2214
2215   /* Make the main, clipping window */
2216   attributes.window_type = GDK_WINDOW_CHILD;
2217   attributes.x = allocation.x;
2218   attributes.y = allocation.y;
2219   attributes.width = allocation.width;
2220   attributes.height = allocation.height;
2221   attributes.wclass = GDK_INPUT_OUTPUT;
2222   attributes.visual = gtk_widget_get_visual (widget);
2223   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2224
2225   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2226
2227   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2228                            &attributes, attributes_mask);
2229   gtk_widget_set_window (widget, window);
2230   gdk_window_set_user_data (window, widget);
2231
2232   gtk_widget_get_allocation (widget, &allocation);
2233
2234   /* Make the window for the tree */
2235   attributes.x = 0;
2236   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2237   attributes.width = MAX (tree_view->priv->width, allocation.width);
2238   attributes.height = allocation.height;
2239   attributes.event_mask = (GDK_EXPOSURE_MASK |
2240                            GDK_SCROLL_MASK |
2241                            GDK_POINTER_MOTION_MASK |
2242                            GDK_ENTER_NOTIFY_MASK |
2243                            GDK_LEAVE_NOTIFY_MASK |
2244                            GDK_BUTTON_PRESS_MASK |
2245                            GDK_BUTTON_RELEASE_MASK |
2246                            gtk_widget_get_events (widget));
2247
2248   tree_view->priv->bin_window = gdk_window_new (window,
2249                                                 &attributes, attributes_mask);
2250   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2251
2252   gtk_widget_get_allocation (widget, &allocation);
2253
2254   /* Make the column header window */
2255   attributes.x = 0;
2256   attributes.y = 0;
2257   attributes.width = MAX (tree_view->priv->width, allocation.width);
2258   attributes.height = tree_view->priv->header_height;
2259   attributes.event_mask = (GDK_EXPOSURE_MASK |
2260                            GDK_SCROLL_MASK |
2261                            GDK_ENTER_NOTIFY_MASK |
2262                            GDK_LEAVE_NOTIFY_MASK |
2263                            GDK_BUTTON_PRESS_MASK |
2264                            GDK_BUTTON_RELEASE_MASK |
2265                            GDK_KEY_PRESS_MASK |
2266                            GDK_KEY_RELEASE_MASK |
2267                            gtk_widget_get_events (widget));
2268
2269   tree_view->priv->header_window = gdk_window_new (window,
2270                                                    &attributes, attributes_mask);
2271   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2272
2273   gtk_tree_view_ensure_background (tree_view);
2274
2275   tmp_list = tree_view->priv->children;
2276   while (tmp_list)
2277     {
2278       GtkTreeViewChild *child = tmp_list->data;
2279       tmp_list = tmp_list->next;
2280
2281       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2282     }
2283
2284   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2285     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2286
2287   /* Need to call those here, since they create GCs */
2288   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2289   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2290
2291   install_presize_handler (tree_view);
2292 }
2293
2294 static void
2295 gtk_tree_view_unrealize (GtkWidget *widget)
2296 {
2297   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2298   GtkTreeViewPrivate *priv = tree_view->priv;
2299   GtkStyleContext *context;
2300   GList *list;
2301
2302   if (priv->scroll_timeout != 0)
2303     {
2304       g_source_remove (priv->scroll_timeout);
2305       priv->scroll_timeout = 0;
2306     }
2307
2308   if (priv->auto_expand_timeout != 0)
2309     {
2310       g_source_remove (priv->auto_expand_timeout);
2311       priv->auto_expand_timeout = 0;
2312     }
2313
2314   if (priv->open_dest_timeout != 0)
2315     {
2316       g_source_remove (priv->open_dest_timeout);
2317       priv->open_dest_timeout = 0;
2318     }
2319
2320   context = gtk_widget_get_style_context (widget);
2321   gtk_style_context_cancel_animations (context, NULL);
2322
2323   if (priv->presize_handler_timer != 0)
2324     {
2325       g_source_remove (priv->presize_handler_timer);
2326       priv->presize_handler_timer = 0;
2327     }
2328
2329   if (priv->validate_rows_timer != 0)
2330     {
2331       g_source_remove (priv->validate_rows_timer);
2332       priv->validate_rows_timer = 0;
2333     }
2334
2335   if (priv->scroll_sync_timer != 0)
2336     {
2337       g_source_remove (priv->scroll_sync_timer);
2338       priv->scroll_sync_timer = 0;
2339     }
2340
2341   if (priv->typeselect_flush_timeout)
2342     {
2343       g_source_remove (priv->typeselect_flush_timeout);
2344       priv->typeselect_flush_timeout = 0;
2345     }
2346
2347   for (list = priv->columns; list; list = list->next)
2348     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2349
2350   gdk_window_set_user_data (priv->bin_window, NULL);
2351   gdk_window_destroy (priv->bin_window);
2352   priv->bin_window = NULL;
2353
2354   gdk_window_set_user_data (priv->header_window, NULL);
2355   gdk_window_destroy (priv->header_window);
2356   priv->header_window = NULL;
2357
2358   if (priv->drag_window)
2359     {
2360       gdk_window_set_user_data (priv->drag_window, NULL);
2361       gdk_window_destroy (priv->drag_window);
2362       priv->drag_window = NULL;
2363     }
2364
2365   if (priv->drag_highlight_window)
2366     {
2367       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2368       gdk_window_destroy (priv->drag_highlight_window);
2369       priv->drag_highlight_window = NULL;
2370     }
2371
2372   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2373 }
2374
2375 /* GtkWidget::size_request helper */
2376 static void
2377 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2378 {
2379   GList *list;
2380
2381   tree_view->priv->header_height = 0;
2382
2383   for (list = tree_view->priv->columns; list; list = list->next)
2384     {
2385       GtkRequisition     requisition;
2386       GtkTreeViewColumn *column = list->data;
2387       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2388
2389       if (button == NULL)
2390         continue;
2391
2392       gtk_widget_get_preferred_size (button, &requisition, NULL);
2393       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2394     }
2395 }
2396
2397
2398 /* Called only by ::size_request */
2399 static void
2400 gtk_tree_view_update_size (GtkTreeView *tree_view)
2401 {
2402   GList *list;
2403   GtkTreeViewColumn *column;
2404   gint i;
2405
2406   if (tree_view->priv->model == NULL)
2407     {
2408       tree_view->priv->width = 0;
2409       tree_view->priv->prev_width = 0;
2410       tree_view->priv->height = 0;
2411       return;
2412     }
2413
2414   tree_view->priv->prev_width = tree_view->priv->width;
2415   tree_view->priv->width = 0;
2416
2417   /* keep this in sync with size_allocate below */
2418   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2419     {
2420       column = list->data;
2421       if (!gtk_tree_view_column_get_visible (column))
2422         continue;
2423
2424       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2425     }
2426
2427   if (tree_view->priv->tree == NULL)
2428     tree_view->priv->height = 0;
2429   else
2430     tree_view->priv->height = tree_view->priv->tree->root->offset;
2431 }
2432
2433 static void
2434 gtk_tree_view_size_request (GtkWidget      *widget,
2435                             GtkRequisition *requisition,
2436                             gboolean        may_validate)
2437 {
2438   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2439
2440   if (may_validate)
2441     {
2442       /* we validate some rows initially just to make sure we have some size.
2443        * In practice, with a lot of static lists, this should get a good width.
2444        */
2445       do_validate_rows (tree_view, FALSE);
2446     }
2447
2448   gtk_tree_view_size_request_columns (tree_view);
2449   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2450
2451   requisition->width = tree_view->priv->width;
2452   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2453 }
2454
2455 static void
2456 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2457                                    gint      *minimum,
2458                                    gint      *natural)
2459 {
2460   GtkRequisition requisition;
2461
2462   gtk_tree_view_size_request (widget, &requisition, TRUE);
2463
2464   *minimum = *natural = requisition.width;
2465 }
2466
2467 static void
2468 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2469                                     gint      *minimum,
2470                                     gint      *natural)
2471 {
2472   GtkRequisition requisition;
2473
2474   gtk_tree_view_size_request (widget, &requisition, TRUE);
2475
2476   *minimum = *natural = requisition.height;
2477 }
2478
2479 static int
2480 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2481 {
2482   int width = 0;
2483   GList *list;
2484   gboolean rtl;
2485
2486   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2487   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2488        list->data != tree_view->priv->expander_column;
2489        list = (rtl ? list->prev : list->next))
2490     {
2491       GtkTreeViewColumn *column = list->data;
2492
2493       width += gtk_tree_view_column_get_width (column);
2494     }
2495
2496   return width;
2497 }
2498
2499 /* GtkWidget::size_allocate helper */
2500 static void
2501 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2502                                      gboolean  *width_changed)
2503 {
2504   GtkTreeView *tree_view;
2505   GList *list, *first_column, *last_column;
2506   GtkTreeViewColumn *column;
2507   GtkAllocation widget_allocation;
2508   gint width = 0;
2509   gint extra, extra_per_column, extra_for_last;
2510   gint full_requested_width = 0;
2511   gint number_of_expand_columns = 0;
2512   gboolean rtl;
2513   gboolean update_expand;
2514
2515   tree_view = GTK_TREE_VIEW (widget);
2516
2517   for (last_column = g_list_last (tree_view->priv->columns);
2518        last_column &&
2519        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2520        last_column = last_column->prev)
2521     ;
2522   if (last_column == NULL)
2523     return;
2524
2525   for (first_column = g_list_first (tree_view->priv->columns);
2526        first_column &&
2527        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2528        first_column = first_column->next)
2529     ;
2530
2531   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2532
2533   /* find out how many extra space and expandable columns we have */
2534   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2535     {
2536       column = (GtkTreeViewColumn *)list->data;
2537
2538       if (!gtk_tree_view_column_get_visible (column))
2539         continue;
2540
2541       full_requested_width += _gtk_tree_view_column_request_width (column);
2542
2543       if (gtk_tree_view_column_get_expand (column))
2544         number_of_expand_columns++;
2545     }
2546
2547   /* Only update the expand value if the width of the widget has changed,
2548    * or the number of expand columns has changed, or if there are no expand
2549    * columns, or if we didn't have an size-allocation yet after the
2550    * last validated node.
2551    */
2552   update_expand = (width_changed && *width_changed == TRUE)
2553       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2554       || number_of_expand_columns == 0
2555       || tree_view->priv->post_validation_flag == TRUE;
2556
2557   tree_view->priv->post_validation_flag = FALSE;
2558
2559   gtk_widget_get_allocation (widget, &widget_allocation);
2560   if (!update_expand)
2561     {
2562       extra = tree_view->priv->last_extra_space;
2563       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2564     }
2565   else
2566     {
2567       extra = MAX (widget_allocation.width - full_requested_width, 0);
2568       extra_for_last = 0;
2569
2570       tree_view->priv->last_extra_space = extra;
2571     }
2572
2573   if (number_of_expand_columns > 0)
2574     extra_per_column = extra/number_of_expand_columns;
2575   else
2576     extra_per_column = 0;
2577
2578   if (update_expand)
2579     {
2580       tree_view->priv->last_extra_space_per_column = extra_per_column;
2581       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2582     }
2583
2584   for (list = (rtl ? last_column : first_column);
2585        list != (rtl ? first_column->prev : last_column->next);
2586        list = (rtl ? list->prev : list->next))
2587     {
2588       gint column_width;
2589
2590       column = list->data;
2591
2592       if (!gtk_tree_view_column_get_visible (column))
2593         continue;
2594
2595       /* We need to handle the dragged button specially.
2596        */
2597       if (column == tree_view->priv->drag_column)
2598         {
2599           GtkAllocation drag_allocation;
2600           GtkWidget    *button;
2601
2602           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2603
2604           drag_allocation.x = 0;
2605           drag_allocation.y = 0;
2606           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2607           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2608           gtk_widget_size_allocate (button, &drag_allocation);
2609           width += drag_allocation.width;
2610           continue;
2611         }
2612
2613       column_width = _gtk_tree_view_column_request_width (column);
2614
2615       if (gtk_tree_view_column_get_expand (column))
2616         {
2617           if (number_of_expand_columns == 1)
2618             {
2619               /* We add the remander to the last column as
2620                * */
2621               column_width += extra;
2622             }
2623           else
2624             {
2625               column_width += extra_per_column;
2626               extra -= extra_per_column;
2627               number_of_expand_columns --;
2628             }
2629         }
2630       else if (number_of_expand_columns == 0 &&
2631                list == last_column)
2632         {
2633           column_width += extra;
2634         }
2635
2636       /* In addition to expand, the last column can get even more
2637        * extra space so all available space is filled up.
2638        */
2639       if (extra_for_last > 0 && list == last_column)
2640         column_width += extra_for_last;
2641
2642       _gtk_tree_view_column_allocate (column, width, column_width);
2643
2644       width += column_width;
2645     }
2646
2647   /* We change the width here.  The user might have been resizing columns,
2648    * which changes the total width of the tree view.  This is of
2649    * importance for getting the horizontal scroll bar right.
2650    */
2651   if (tree_view->priv->width != width)
2652     {
2653       tree_view->priv->width = width;
2654       if (width_changed)
2655         *width_changed = TRUE;
2656     }
2657 }
2658
2659
2660 static void
2661 gtk_tree_view_size_allocate (GtkWidget     *widget,
2662                              GtkAllocation *allocation)
2663 {
2664   GtkAllocation widget_allocation;
2665   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2666   GList *tmp_list;
2667   gboolean width_changed = FALSE;
2668   gint old_width;
2669
2670   gtk_widget_get_allocation (widget, &widget_allocation);
2671   old_width = widget_allocation.width;
2672   if (allocation->width != widget_allocation.width)
2673     width_changed = TRUE;
2674
2675   gtk_widget_set_allocation (widget, allocation);
2676
2677   tmp_list = tree_view->priv->children;
2678
2679   while (tmp_list)
2680     {
2681       GtkAllocation allocation;
2682
2683       GtkTreeViewChild *child = tmp_list->data;
2684       tmp_list = tmp_list->next;
2685
2686       /* totally ignore our child's requisition */
2687       allocation.x = child->x;
2688       allocation.y = child->y;
2689       allocation.width = child->width;
2690       allocation.height = child->height;
2691       gtk_widget_size_allocate (child->widget, &allocation);
2692     }
2693
2694   /* We size-allocate the columns first because the width of the
2695    * tree view (used in updating the adjustments below) might change.
2696    */
2697   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2698
2699   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2700   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2701                                 allocation->width);
2702   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2703                                      allocation->width * 0.9);
2704   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2705                                      allocation->width * 0.1);
2706   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2707   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2708                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2709                                  tree_view->priv->width));
2710   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2711
2712   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2713     {
2714       if (allocation->width < tree_view->priv->width)
2715         {
2716           if (tree_view->priv->init_hadjust_value)
2717             {
2718               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2719                                         MAX (tree_view->priv->width -
2720                                              allocation->width, 0));
2721               tree_view->priv->init_hadjust_value = FALSE;
2722             }
2723           else if (allocation->width != old_width)
2724             {
2725               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2726                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2727                                                0,
2728                                                tree_view->priv->width - allocation->width));
2729             }
2730           else
2731             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2732                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2733                                              0,
2734                                              tree_view->priv->width - allocation->width));
2735         }
2736       else
2737         {
2738           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2739           tree_view->priv->init_hadjust_value = TRUE;
2740         }
2741     }
2742   else
2743     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2744       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2745                                 MAX (tree_view->priv->width -
2746                                      allocation->width, 0));
2747
2748   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2749   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2750                                 allocation->height -
2751                                 gtk_tree_view_get_effective_header_height (tree_view));
2752   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2753                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2754   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2755                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2756   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2757   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2758                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2759                                  tree_view->priv->height));
2760   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2761
2762   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2763   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2764     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2765   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2766     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2767                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2768   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2769     gtk_tree_view_top_row_to_dy (tree_view);
2770   else
2771     gtk_tree_view_dy_to_top_row (tree_view);
2772
2773   if (gtk_widget_get_realized (widget))
2774     {
2775       gdk_window_move_resize (gtk_widget_get_window (widget),
2776                               allocation->x, allocation->y,
2777                               allocation->width, allocation->height);
2778       gdk_window_move_resize (tree_view->priv->header_window,
2779                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2780                               0,
2781                               MAX (tree_view->priv->width, allocation->width),
2782                               tree_view->priv->header_height);
2783       gdk_window_move_resize (tree_view->priv->bin_window,
2784                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2785                               gtk_tree_view_get_effective_header_height (tree_view),
2786                               MAX (tree_view->priv->width, allocation->width),
2787                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2788
2789       if (tree_view->priv->tree == NULL)
2790         invalidate_empty_focus (tree_view);
2791
2792       if (width_changed && tree_view->priv->expander_column)
2793         {
2794           /* Might seem awkward, but is the best heuristic I could come up
2795            * with.  Only if the width of the columns before the expander
2796            * changes, we will update the prelight status.  It is this
2797            * width that makes the expander move vertically.  Always updating
2798            * prelight status causes trouble with hover selections.
2799            */
2800           gint width_before_expander;
2801
2802           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2803
2804           if (tree_view->priv->prev_width_before_expander
2805               != width_before_expander)
2806               update_prelight (tree_view,
2807                                tree_view->priv->event_last_x,
2808                                tree_view->priv->event_last_y);
2809
2810           tree_view->priv->prev_width_before_expander = width_before_expander;
2811         }
2812     }
2813 }
2814
2815 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2816 static void
2817 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2818 {
2819   GtkWidget *widget = GTK_WIDGET (tree_view);
2820
2821   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2822     gtk_widget_grab_focus (widget);
2823   tree_view->priv->draw_keyfocus = 0;
2824 }
2825
2826 static inline gboolean
2827 row_is_separator (GtkTreeView *tree_view,
2828                   GtkTreeIter *iter,
2829                   GtkTreePath *path)
2830 {
2831   gboolean is_separator = FALSE;
2832
2833   if (tree_view->priv->row_separator_func)
2834     {
2835       GtkTreeIter tmpiter;
2836
2837       if (iter)
2838         tmpiter = *iter;
2839       else
2840         {
2841           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2842             return FALSE;
2843         }
2844
2845       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2846                                                           &tmpiter,
2847                                                           tree_view->priv->row_separator_data);
2848     }
2849
2850   return is_separator;
2851 }
2852
2853 static gboolean
2854 gtk_tree_view_button_press (GtkWidget      *widget,
2855                             GdkEventButton *event)
2856 {
2857   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2858   GList *list;
2859   GtkTreeViewColumn *column = NULL;
2860   gint i;
2861   GdkRectangle background_area;
2862   GdkRectangle cell_area;
2863   gint vertical_separator;
2864   gint horizontal_separator;
2865   gboolean path_is_selectable;
2866   gboolean rtl;
2867
2868   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2869   gtk_tree_view_stop_editing (tree_view, FALSE);
2870   gtk_widget_style_get (widget,
2871                         "vertical-separator", &vertical_separator,
2872                         "horizontal-separator", &horizontal_separator,
2873                         NULL);
2874
2875   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2876    * we're done handling the button press.
2877    */
2878
2879   if (event->window == tree_view->priv->bin_window)
2880     {
2881       GtkRBNode *node;
2882       GtkRBTree *tree;
2883       GtkTreePath *path;
2884       gint depth;
2885       gint new_y;
2886       gint y_offset;
2887       gint dval;
2888       gint pre_val, aft_val;
2889       GtkTreeViewColumn *column = NULL;
2890       gint column_handled_click = FALSE;
2891       gboolean row_double_click = FALSE;
2892       gboolean rtl;
2893       gboolean node_selected;
2894       GdkModifierType extend_mod_mask;
2895       GdkModifierType modify_mod_mask;
2896
2897       /* Empty tree? */
2898       if (tree_view->priv->tree == NULL)
2899         {
2900           grab_focus_and_unset_draw_keyfocus (tree_view);
2901           return TRUE;
2902         }
2903
2904       /* are we in an arrow? */
2905       if (tree_view->priv->prelight_node &&
2906           tree_view->priv->arrow_prelit &&
2907           gtk_tree_view_draw_expanders (tree_view))
2908         {
2909           if (event->button == 1)
2910             {
2911               gtk_grab_add (widget);
2912               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2913               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2914               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2915                                               tree_view->priv->prelight_tree,
2916                                               tree_view->priv->prelight_node);
2917             }
2918
2919           grab_focus_and_unset_draw_keyfocus (tree_view);
2920           return TRUE;
2921         }
2922
2923       /* find the node that was clicked */
2924       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2925       if (new_y < 0)
2926         new_y = 0;
2927       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2928
2929       if (node == NULL)
2930         {
2931           /* We clicked in dead space */
2932           grab_focus_and_unset_draw_keyfocus (tree_view);
2933           return TRUE;
2934         }
2935
2936       /* Get the path and the node */
2937       path = _gtk_tree_path_new_from_rbtree (tree, node);
2938       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2939
2940       if (!path_is_selectable)
2941         {
2942           gtk_tree_path_free (path);
2943           grab_focus_and_unset_draw_keyfocus (tree_view);
2944           return TRUE;
2945         }
2946
2947       depth = gtk_tree_path_get_depth (path);
2948       background_area.y = y_offset + event->y;
2949       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2950       background_area.x = 0;
2951
2952
2953       /* Let the column have a chance at selecting it. */
2954       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2955       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2956            list; list = (rtl ? list->prev : list->next))
2957         {
2958           GtkTreeViewColumn *candidate = list->data;
2959
2960           if (!gtk_tree_view_column_get_visible (candidate))
2961             continue;
2962
2963           background_area.width = gtk_tree_view_column_get_width (candidate);
2964           if ((background_area.x > (gint) event->x) ||
2965               (background_area.x + background_area.width <= (gint) event->x))
2966             {
2967               background_area.x += background_area.width;
2968               continue;
2969             }
2970
2971           /* we found the focus column */
2972           column = candidate;
2973           cell_area = background_area;
2974           cell_area.width -= horizontal_separator;
2975           cell_area.height -= vertical_separator;
2976           cell_area.x += horizontal_separator/2;
2977           cell_area.y += vertical_separator/2;
2978           if (gtk_tree_view_is_expander_column (tree_view, column))
2979             {
2980               if (!rtl)
2981                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2982               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2983
2984               if (gtk_tree_view_draw_expanders (tree_view))
2985                 {
2986                   if (!rtl)
2987                     cell_area.x += depth * tree_view->priv->expander_size;
2988                   cell_area.width -= depth * tree_view->priv->expander_size;
2989                 }
2990             }
2991           break;
2992         }
2993
2994       if (column == NULL)
2995         {
2996           gtk_tree_path_free (path);
2997           grab_focus_and_unset_draw_keyfocus (tree_view);
2998           return FALSE;
2999         }
3000
3001       _gtk_tree_view_set_focus_column (tree_view, column);
3002
3003       /* decide if we edit */
3004       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3005           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3006         {
3007           GtkTreePath *anchor;
3008           GtkTreeIter iter;
3009
3010           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3011           gtk_tree_view_column_cell_set_cell_data (column,
3012                                                    tree_view->priv->model,
3013                                                    &iter,
3014                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3015                                                    node->children?TRUE:FALSE);
3016
3017           if (tree_view->priv->anchor)
3018             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3019           else
3020             anchor = NULL;
3021
3022           if ((anchor && !gtk_tree_path_compare (anchor, path))
3023               || !_gtk_tree_view_column_has_editable_cell (column))
3024             {
3025               GtkCellEditable *cell_editable = NULL;
3026
3027               /* FIXME: get the right flags */
3028               guint flags = 0;
3029
3030               if (_gtk_tree_view_column_cell_event (column,
3031                                                     (GdkEvent *)event,
3032                                                     &cell_area, flags))
3033                 {
3034                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3035                   cell_editable = gtk_cell_area_get_edit_widget (area);
3036
3037                   if (cell_editable != NULL)
3038                     {
3039                       gtk_tree_path_free (path);
3040                       gtk_tree_path_free (anchor);
3041                       return TRUE;
3042                     }
3043                   column_handled_click = TRUE;
3044                 }
3045             }
3046           if (anchor)
3047             gtk_tree_path_free (anchor);
3048         }
3049
3050       extend_mod_mask =
3051         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3052
3053       modify_mod_mask =
3054         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3055
3056       /* select */
3057       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3058       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3059
3060       /* we only handle selection modifications on the first button press
3061        */
3062       if (event->type == GDK_BUTTON_PRESS)
3063         {
3064           GtkCellRenderer *focus_cell;
3065
3066           if ((event->state & modify_mod_mask) == modify_mod_mask)
3067             tree_view->priv->modify_selection_pressed = TRUE;
3068           if ((event->state & extend_mod_mask) == extend_mod_mask)
3069             tree_view->priv->extend_selection_pressed = TRUE;
3070
3071           /* We update the focus cell here, this is also needed if the
3072            * column does not contain an editable cell.  In this case,
3073            * GtkCellArea did not receive the event for processing (and
3074            * could not update the focus cell).
3075            */
3076           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3077                                                               &cell_area,
3078                                                               &background_area,
3079                                                               event->x,
3080                                                               event->y);
3081
3082           if (focus_cell)
3083             gtk_tree_view_column_focus_cell (column, focus_cell);
3084
3085           if (event->state & modify_mod_mask)
3086             {
3087               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3088               gtk_tree_view_real_toggle_cursor_row (tree_view);
3089             }
3090           else if (event->state & extend_mod_mask)
3091             {
3092               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3093               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3094             }
3095           else
3096             {
3097               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3098             }
3099
3100           tree_view->priv->modify_selection_pressed = FALSE;
3101           tree_view->priv->extend_selection_pressed = FALSE;
3102         }
3103
3104       /* the treeview may have been scrolled because of _set_cursor,
3105        * correct here
3106        */
3107
3108       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3109       dval = pre_val - aft_val;
3110
3111       cell_area.y += dval;
3112       background_area.y += dval;
3113
3114       /* Save press to possibly begin a drag
3115        */
3116       if (!column_handled_click &&
3117           !tree_view->priv->in_grab &&
3118           tree_view->priv->pressed_button < 0)
3119         {
3120           tree_view->priv->pressed_button = event->button;
3121           tree_view->priv->press_start_x = event->x;
3122           tree_view->priv->press_start_y = event->y;
3123
3124           if (tree_view->priv->rubber_banding_enable
3125               && !node_selected
3126               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3127             {
3128               tree_view->priv->press_start_y += tree_view->priv->dy;
3129               tree_view->priv->rubber_band_x = event->x;
3130               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3131               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3132
3133               if ((event->state & modify_mod_mask) == modify_mod_mask)
3134                 tree_view->priv->rubber_band_modify = TRUE;
3135               if ((event->state & extend_mod_mask) == extend_mod_mask)
3136                 tree_view->priv->rubber_band_extend = TRUE;
3137             }
3138         }
3139
3140       /* Test if a double click happened on the same row. */
3141       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3142         {
3143           int double_click_time, double_click_distance;
3144
3145           g_object_get (gtk_settings_get_default (),
3146                         "gtk-double-click-time", &double_click_time,
3147                         "gtk-double-click-distance", &double_click_distance,
3148                         NULL);
3149
3150           /* Same conditions as _gdk_event_button_generate */
3151           if (tree_view->priv->last_button_x != -1 &&
3152               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3153               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3154               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3155             {
3156               /* We do no longer compare paths of this row and the
3157                * row clicked previously.  We use the double click
3158                * distance to decide whether this is a valid click,
3159                * allowing the mouse to slightly move over another row.
3160                */
3161               row_double_click = TRUE;
3162
3163               tree_view->priv->last_button_time = 0;
3164               tree_view->priv->last_button_x = -1;
3165               tree_view->priv->last_button_y = -1;
3166             }
3167           else
3168             {
3169               tree_view->priv->last_button_time = event->time;
3170               tree_view->priv->last_button_x = event->x;
3171               tree_view->priv->last_button_y = event->y;
3172             }
3173         }
3174
3175       if (row_double_click)
3176         {
3177           gtk_grab_remove (widget);
3178           gtk_tree_view_row_activated (tree_view, path, column);
3179
3180           if (tree_view->priv->pressed_button == event->button)
3181             tree_view->priv->pressed_button = -1;
3182         }
3183
3184       gtk_tree_path_free (path);
3185
3186       /* If we activated the row through a double click we don't want to grab
3187        * focus back, as moving focus to another widget is pretty common.
3188        */
3189       if (!row_double_click)
3190         grab_focus_and_unset_draw_keyfocus (tree_view);
3191
3192       return TRUE;
3193     }
3194
3195   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3196    */
3197   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3198     {
3199       column = list->data;
3200       if (event->window == _gtk_tree_view_column_get_window (column) &&
3201           gtk_tree_view_column_get_resizable (column) &&
3202           _gtk_tree_view_column_get_window (column))
3203         {
3204           gpointer drag_data;
3205
3206           if (event->type == GDK_2BUTTON_PRESS &&
3207               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3208             {
3209               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3210               _gtk_tree_view_column_autosize (tree_view, column);
3211               return TRUE;
3212             }
3213
3214           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3215                                _gtk_tree_view_column_get_window (column),
3216                                GDK_OWNERSHIP_NONE,
3217                                FALSE,
3218                                GDK_POINTER_MOTION_HINT_MASK
3219                                 | GDK_BUTTON1_MOTION_MASK
3220                                 | GDK_BUTTON_RELEASE_MASK,
3221                                NULL,
3222                                event->time) != GDK_GRAB_SUCCESS)
3223             return FALSE;
3224
3225           gtk_grab_add (widget);
3226           tree_view->priv->in_column_resize = TRUE;
3227
3228           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3229                                                    tree_view->priv->last_extra_space_per_column);
3230
3231           /* block attached dnd signal handler */
3232           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3233           if (drag_data)
3234             g_signal_handlers_block_matched (widget,
3235                                              G_SIGNAL_MATCH_DATA,
3236                                              0, 0, NULL, NULL,
3237                                              drag_data);
3238
3239           tree_view->priv->drag_pos = i;
3240           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3241
3242           if (!gtk_widget_has_focus (widget))
3243             gtk_widget_grab_focus (widget);
3244
3245           return TRUE;
3246         }
3247     }
3248   return FALSE;
3249 }
3250
3251 /* GtkWidget::button_release_event helper */
3252 static gboolean
3253 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3254                                           GdkEventButton *event)
3255 {
3256   GtkTreeView *tree_view;
3257   GtkWidget *button;
3258   GList *l;
3259   gboolean rtl;
3260   GdkDevice *device, *other;
3261
3262   tree_view = GTK_TREE_VIEW (widget);
3263
3264   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3265   device = gdk_event_get_device ((GdkEvent*)event);
3266   other = gdk_device_get_associated_device (device);
3267   gdk_device_ungrab (device, event->time);
3268   gdk_device_ungrab (other, event->time);
3269
3270   /* Move the button back */
3271   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3272   g_object_ref (button);
3273   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3274   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3275   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3276   g_object_unref (button);
3277   gtk_widget_queue_resize (widget);
3278   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3279     {
3280       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3281       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282     }
3283   else
3284     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3285
3286   gtk_widget_grab_focus (button);
3287
3288   if (rtl)
3289     {
3290       if (tree_view->priv->cur_reorder &&
3291           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3292         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3293                                          tree_view->priv->cur_reorder->right_column);
3294     }
3295   else
3296     {
3297       if (tree_view->priv->cur_reorder &&
3298           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3299         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3300                                          tree_view->priv->cur_reorder->left_column);
3301     }
3302   tree_view->priv->drag_column = NULL;
3303   gdk_window_hide (tree_view->priv->drag_window);
3304
3305   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3306     g_slice_free (GtkTreeViewColumnReorder, l->data);
3307   g_list_free (tree_view->priv->column_drag_info);
3308   tree_view->priv->column_drag_info = NULL;
3309   tree_view->priv->cur_reorder = NULL;
3310
3311   if (tree_view->priv->drag_highlight_window)
3312     gdk_window_hide (tree_view->priv->drag_highlight_window);
3313
3314   /* Reset our flags */
3315   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3316   tree_view->priv->in_column_drag = FALSE;
3317
3318   return TRUE;
3319 }
3320
3321 /* GtkWidget::button_release_event helper */
3322 static gboolean
3323 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3324                                             GdkEventButton *event)
3325 {
3326   GtkTreeView *tree_view;
3327   gpointer drag_data;
3328
3329   tree_view = GTK_TREE_VIEW (widget);
3330
3331   tree_view->priv->drag_pos = -1;
3332
3333   /* unblock attached dnd signal handler */
3334   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3335   if (drag_data)
3336     g_signal_handlers_unblock_matched (widget,
3337                                        G_SIGNAL_MATCH_DATA,
3338                                        0, 0, NULL, NULL,
3339                                        drag_data);
3340
3341   tree_view->priv->in_column_resize = FALSE;
3342   gtk_grab_remove (widget);
3343   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3344   return TRUE;
3345 }
3346
3347 static gboolean
3348 gtk_tree_view_button_release (GtkWidget      *widget,
3349                               GdkEventButton *event)
3350 {
3351   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3352
3353   if (tree_view->priv->in_column_drag)
3354     return gtk_tree_view_button_release_drag_column (widget, event);
3355
3356   if (tree_view->priv->rubber_band_status)
3357     gtk_tree_view_stop_rubber_band (tree_view);
3358
3359   if (tree_view->priv->pressed_button == event->button)
3360     tree_view->priv->pressed_button = -1;
3361
3362   if (tree_view->priv->in_column_resize)
3363     return gtk_tree_view_button_release_column_resize (widget, event);
3364
3365   if (tree_view->priv->button_pressed_node == NULL)
3366     return FALSE;
3367
3368   if (event->button == 1)
3369     {
3370       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3371           tree_view->priv->arrow_prelit)
3372         {
3373           GtkTreePath *path = NULL;
3374
3375           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3376                                                  tree_view->priv->button_pressed_node);
3377           /* Actually activate the node */
3378           if (tree_view->priv->button_pressed_node->children == NULL)
3379             gtk_tree_view_real_expand_row (tree_view, path,
3380                                            tree_view->priv->button_pressed_tree,
3381                                            tree_view->priv->button_pressed_node,
3382                                            FALSE, TRUE);
3383           else
3384             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3385                                              tree_view->priv->button_pressed_tree,
3386                                              tree_view->priv->button_pressed_node, TRUE);
3387           gtk_tree_path_free (path);
3388         }
3389
3390       gtk_grab_remove (widget);
3391       tree_view->priv->button_pressed_tree = NULL;
3392       tree_view->priv->button_pressed_node = NULL;
3393     }
3394
3395   return TRUE;
3396 }
3397
3398 static gboolean
3399 gtk_tree_view_grab_broken (GtkWidget          *widget,
3400                            GdkEventGrabBroken *event)
3401 {
3402   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3403
3404   if (tree_view->priv->in_column_drag)
3405     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3406
3407   if (tree_view->priv->in_column_resize)
3408     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3409
3410   return TRUE;
3411 }
3412
3413 #if 0
3414 static gboolean
3415 gtk_tree_view_configure (GtkWidget *widget,
3416                          GdkEventConfigure *event)
3417 {
3418   GtkTreeView *tree_view;
3419
3420   tree_view = GTK_TREE_VIEW (widget);
3421   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3422
3423   return FALSE;
3424 }
3425 #endif
3426
3427 /* GtkWidget::motion_event function set.
3428  */
3429
3430 static gboolean
3431 coords_are_over_arrow (GtkTreeView *tree_view,
3432                        GtkRBTree   *tree,
3433                        GtkRBNode   *node,
3434                        /* these are in bin window coords */
3435                        gint         x,
3436                        gint         y)
3437 {
3438   GdkRectangle arrow;
3439   gint x2;
3440
3441   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3442     return FALSE;
3443
3444   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3445     return FALSE;
3446
3447   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3448   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3449
3450   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3451
3452   arrow.width = x2 - arrow.x;
3453
3454   return (x >= arrow.x &&
3455           x < (arrow.x + arrow.width) &&
3456           y >= arrow.y &&
3457           y < (arrow.y + arrow.height));
3458 }
3459
3460 static gboolean
3461 auto_expand_timeout (gpointer data)
3462 {
3463   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3464   GtkTreePath *path;
3465
3466   if (tree_view->priv->prelight_node)
3467     {
3468       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3469                                              tree_view->priv->prelight_node);
3470
3471       if (tree_view->priv->prelight_node->children)
3472         gtk_tree_view_collapse_row (tree_view, path);
3473       else
3474         gtk_tree_view_expand_row (tree_view, path, FALSE);
3475
3476       gtk_tree_path_free (path);
3477     }
3478
3479   tree_view->priv->auto_expand_timeout = 0;
3480
3481   return FALSE;
3482 }
3483
3484 static void
3485 remove_auto_expand_timeout (GtkTreeView *tree_view)
3486 {
3487   if (tree_view->priv->auto_expand_timeout != 0)
3488     {
3489       g_source_remove (tree_view->priv->auto_expand_timeout);
3490       tree_view->priv->auto_expand_timeout = 0;
3491     }
3492 }
3493
3494 static void
3495 do_prelight (GtkTreeView *tree_view,
3496              GtkRBTree   *tree,
3497              GtkRBNode   *node,
3498              /* these are in bin_window coords */
3499              gint         x,
3500              gint         y)
3501 {
3502   if (tree_view->priv->prelight_tree == tree &&
3503       tree_view->priv->prelight_node == node)
3504     {
3505       /*  We are still on the same node,
3506           but we might need to take care of the arrow  */
3507
3508       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3509         {
3510           gboolean over_arrow;
3511
3512           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3513
3514           if (over_arrow != tree_view->priv->arrow_prelit)
3515             {
3516               if (over_arrow)
3517                 tree_view->priv->arrow_prelit = TRUE;
3518               else
3519                 tree_view->priv->arrow_prelit = FALSE;
3520
3521               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3522             }
3523         }
3524
3525       return;
3526     }
3527
3528   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3529     {
3530       /*  Unprelight the old node and arrow  */
3531
3532       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3533                              GTK_RBNODE_IS_PRELIT);
3534
3535       if (tree_view->priv->arrow_prelit
3536           && gtk_tree_view_draw_expanders (tree_view))
3537         {
3538           tree_view->priv->arrow_prelit = FALSE;
3539
3540           gtk_tree_view_queue_draw_arrow (tree_view,
3541                                           tree_view->priv->prelight_tree,
3542                                           tree_view->priv->prelight_node);
3543         }
3544
3545       _gtk_tree_view_queue_draw_node (tree_view,
3546                                       tree_view->priv->prelight_tree,
3547                                       tree_view->priv->prelight_node,
3548                                       NULL);
3549     }
3550
3551
3552   if (tree_view->priv->hover_expand)
3553     remove_auto_expand_timeout (tree_view);
3554
3555   /*  Set the new prelight values  */
3556   tree_view->priv->prelight_node = node;
3557   tree_view->priv->prelight_tree = tree;
3558
3559   if (!node || !tree)
3560     return;
3561
3562   /*  Prelight the new node and arrow  */
3563
3564   if (gtk_tree_view_draw_expanders (tree_view)
3565       && coords_are_over_arrow (tree_view, tree, node, x, y))
3566     {
3567       tree_view->priv->arrow_prelit = TRUE;
3568
3569       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3570     }
3571
3572   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3573
3574   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3575
3576   if (tree_view->priv->hover_expand)
3577     {
3578       tree_view->priv->auto_expand_timeout =
3579         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3580     }
3581 }
3582
3583 static void
3584 prelight_or_select (GtkTreeView *tree_view,
3585                     GtkRBTree   *tree,
3586                     GtkRBNode   *node,
3587                     /* these are in bin_window coords */
3588                     gint         x,
3589                     gint         y)
3590 {
3591   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3592
3593   if (tree_view->priv->hover_selection &&
3594       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3595       !(tree_view->priv->edited_column &&
3596         gtk_cell_area_get_edit_widget
3597         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3598     {
3599       if (node)
3600         {
3601           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3602             {
3603               GtkTreePath *path;
3604
3605               path = _gtk_tree_path_new_from_rbtree (tree, node);
3606               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3607               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3608                 {
3609                   tree_view->priv->draw_keyfocus = FALSE;
3610                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3611                 }
3612               gtk_tree_path_free (path);
3613             }
3614         }
3615
3616       else if (mode == GTK_SELECTION_SINGLE)
3617         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3618     }
3619
3620     do_prelight (tree_view, tree, node, x, y);
3621 }
3622
3623 static void
3624 ensure_unprelighted (GtkTreeView *tree_view)
3625 {
3626   do_prelight (tree_view,
3627                NULL, NULL,
3628                -1000, -1000); /* coords not possibly over an arrow */
3629
3630   g_assert (tree_view->priv->prelight_node == NULL);
3631 }
3632
3633 static void
3634 update_prelight (GtkTreeView *tree_view,
3635                  gint         x,
3636                  gint         y)
3637 {
3638   int new_y;
3639   GtkRBTree *tree;
3640   GtkRBNode *node;
3641
3642   if (tree_view->priv->tree == NULL)
3643     return;
3644
3645   if (x == -10000)
3646     {
3647       ensure_unprelighted (tree_view);
3648       return;
3649     }
3650
3651   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3652   if (new_y < 0)
3653     new_y = 0;
3654
3655   _gtk_rbtree_find_offset (tree_view->priv->tree,
3656                            new_y, &tree, &node);
3657
3658   if (node)
3659     prelight_or_select (tree_view, tree, node, x, y);
3660 }
3661
3662
3663
3664
3665 /* Our motion arrow is either a box (in the case of the original spot)
3666  * or an arrow.  It is expander_size wide.
3667  */
3668 /*
3669  * 11111111111111
3670  * 01111111111110
3671  * 00111111111100
3672  * 00011111111000
3673  * 00001111110000
3674  * 00000111100000
3675  * 00000111100000
3676  * 00000111100000
3677  * ~ ~ ~ ~ ~ ~ ~
3678  * 00000111100000
3679  * 00000111100000
3680  * 00000111100000
3681  * 00001111110000
3682  * 00011111111000
3683  * 00111111111100
3684  * 01111111111110
3685  * 11111111111111
3686  */
3687
3688 static void
3689 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3690 {
3691   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3692   GtkWidget *widget = GTK_WIDGET (tree_view);
3693   cairo_surface_t *mask_image;
3694   cairo_region_t *mask_region;
3695   gint x;
3696   gint y;
3697   gint width;
3698   gint height;
3699   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3700   GdkWindowAttr attributes;
3701   guint attributes_mask;
3702   cairo_t *cr;
3703
3704   if (!reorder ||
3705       reorder->left_column == tree_view->priv->drag_column ||
3706       reorder->right_column == tree_view->priv->drag_column)
3707     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3708   else if (reorder->left_column || reorder->right_column)
3709     {
3710       GtkAllocation left_allocation, right_allocation;
3711       GdkRectangle visible_rect;
3712       GtkWidget *button;
3713
3714       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3715       if (reorder->left_column)
3716         {
3717           button = gtk_tree_view_column_get_button (reorder->left_column);
3718           gtk_widget_get_allocation (button, &left_allocation);
3719           x = left_allocation.x + left_allocation.width;
3720         }
3721       else
3722         {
3723           button = gtk_tree_view_column_get_button (reorder->right_column);
3724           gtk_widget_get_allocation (button, &right_allocation);
3725           x = right_allocation.x;
3726         }
3727
3728       if (x < visible_rect.x)
3729         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3730       else if (x > visible_rect.x + visible_rect.width)
3731         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3732       else
3733         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3734     }
3735
3736   /* We want to draw the rectangle over the initial location. */
3737   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3738     {
3739       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3740         {
3741           GtkAllocation drag_allocation;
3742           GtkWidget    *button;
3743
3744           if (tree_view->priv->drag_highlight_window)
3745             {
3746               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3747                                         NULL);
3748               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3749             }
3750
3751           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3752           attributes.window_type = GDK_WINDOW_CHILD;
3753           attributes.wclass = GDK_INPUT_OUTPUT;
3754           attributes.x = tree_view->priv->drag_column_x;
3755           attributes.y = 0;
3756           gtk_widget_get_allocation (button, &drag_allocation);
3757           width = attributes.width = drag_allocation.width;
3758           height = attributes.height = drag_allocation.height;
3759           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3760           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3761           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3762           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3763           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3764
3765           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3766           cr = cairo_create (mask_image);
3767
3768           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3769           cairo_stroke (cr);
3770           cairo_destroy (cr);
3771
3772           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3773           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3774                                            mask_region, 0, 0);
3775
3776           cairo_region_destroy (mask_region);
3777           cairo_surface_destroy (mask_image);
3778
3779           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3780         }
3781     }
3782   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3783     {
3784       GtkAllocation button_allocation;
3785       GtkWidget    *button;
3786
3787       width = tree_view->priv->expander_size;
3788
3789       /* Get x, y, width, height of arrow */
3790       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3791       if (reorder->left_column)
3792         {
3793           button = gtk_tree_view_column_get_button (reorder->left_column);
3794           gtk_widget_get_allocation (button, &button_allocation);
3795           x += button_allocation.x + button_allocation.width - width/2;
3796           height = button_allocation.height;
3797         }
3798       else
3799         {
3800           button = gtk_tree_view_column_get_button (reorder->right_column);
3801           gtk_widget_get_allocation (button, &button_allocation);
3802           x += button_allocation.x - width/2;
3803           height = button_allocation.height;
3804         }
3805       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3806       height += tree_view->priv->expander_size;
3807
3808       /* Create the new window */
3809       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3810         {
3811           if (tree_view->priv->drag_highlight_window)
3812             {
3813               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3814                                         NULL);
3815               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3816             }
3817
3818           attributes.window_type = GDK_WINDOW_TEMP;
3819           attributes.wclass = GDK_INPUT_OUTPUT;
3820           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3821           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3822           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3823           attributes.x = x;
3824           attributes.y = y;
3825           attributes.width = width;
3826           attributes.height = height;
3827           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3828                                                                    &attributes, attributes_mask);
3829           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3830
3831           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3832
3833           cr = cairo_create (mask_image);
3834           cairo_move_to (cr, 0, 0);
3835           cairo_line_to (cr, width, 0);
3836           cairo_line_to (cr, width / 2., width / 2);
3837           cairo_move_to (cr, 0, height);
3838           cairo_line_to (cr, width, height);
3839           cairo_line_to (cr, width / 2., height - width / 2.);
3840           cairo_fill (cr);
3841           cairo_destroy (cr);
3842
3843           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3844           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3845                                            mask_region, 0, 0);
3846
3847           cairo_region_destroy (mask_region);
3848           cairo_surface_destroy (mask_image);
3849         }
3850
3851       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3852       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3853     }
3854   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3855            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3856     {
3857       GtkAllocation allocation;
3858       GtkWidget    *button;
3859
3860       width = tree_view->priv->expander_size;
3861
3862       /* Get x, y, width, height of arrow */
3863       width = width/2; /* remember, the arrow only takes half the available width */
3864       gdk_window_get_origin (gtk_widget_get_window (widget),
3865                              &x, &y);
3866       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3867         {
3868           gtk_widget_get_allocation (widget, &allocation);
3869           x += allocation.width - width;
3870         }
3871
3872       if (reorder->left_column)
3873         {
3874           button = gtk_tree_view_column_get_button (reorder->left_column);
3875           gtk_widget_get_allocation (button, &allocation);
3876           height = allocation.height;
3877         }
3878       else
3879         {
3880           button = gtk_tree_view_column_get_button (reorder->right_column);
3881           gtk_widget_get_allocation (button, &allocation);
3882           height = allocation.height;
3883         }
3884
3885       y -= tree_view->priv->expander_size;
3886       height += 2*tree_view->priv->expander_size;
3887
3888       /* Create the new window */
3889       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3890           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3891         {
3892           if (tree_view->priv->drag_highlight_window)
3893             {
3894               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3895                                         NULL);
3896               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3897             }
3898
3899           attributes.window_type = GDK_WINDOW_TEMP;
3900           attributes.wclass = GDK_INPUT_OUTPUT;
3901           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3902           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3903           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3904           attributes.x = x;
3905           attributes.y = y;
3906           attributes.width = width;
3907           attributes.height = height;
3908           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3909           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3910
3911           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3912
3913           cr = cairo_create (mask_image);
3914           /* mirror if we're on the left */
3915           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3916             {
3917               cairo_translate (cr, width, 0);
3918               cairo_scale (cr, -1, 1);
3919             }
3920           cairo_move_to (cr, 0, 0);
3921           cairo_line_to (cr, width, width);
3922           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3923           cairo_move_to (cr, 0, height);
3924           cairo_line_to (cr, width, height - width);
3925           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3926           cairo_fill (cr);
3927           cairo_destroy (cr);
3928
3929           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3930           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3931                                            mask_region, 0, 0);
3932
3933           cairo_region_destroy (mask_region);
3934           cairo_surface_destroy (mask_image);
3935         }
3936
3937       tree_view->priv->drag_column_window_state = arrow_type;
3938       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3939    }
3940   else
3941     {
3942       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3943       gdk_window_hide (tree_view->priv->drag_highlight_window);
3944       return;
3945     }
3946
3947   gdk_window_show (tree_view->priv->drag_highlight_window);
3948   gdk_window_raise (tree_view->priv->drag_highlight_window);
3949 }
3950
3951 static gboolean
3952 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3953                                     GdkEventMotion *event)
3954 {
3955   gint x;
3956   gint new_width;
3957   GtkTreeViewColumn *column;
3958   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3959
3960   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3961
3962   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3963     gdk_window_get_device_position (gtk_widget_get_window (widget),
3964                                     gdk_event_get_device ((GdkEvent *) event),
3965                                     &x, NULL, NULL);
3966   else
3967     x = event->x;
3968
3969   if (tree_view->priv->hadjustment)
3970     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3971
3972   new_width = gtk_tree_view_new_column_width (tree_view,
3973                                               tree_view->priv->drag_pos, &x);
3974   if (x != tree_view->priv->x_drag &&
3975       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3976     {
3977       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3978
3979       if (gtk_tree_view_column_get_expand (column))
3980         new_width -= tree_view->priv->last_extra_space_per_column;
3981
3982       _gtk_tree_view_column_set_resized_width (column, new_width);
3983
3984
3985       gtk_widget_queue_resize (widget);
3986     }
3987
3988   return FALSE;
3989 }
3990
3991
3992 static void
3993 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3994                                       GdkEvent    *event)
3995 {
3996   GtkTreeViewColumnReorder *reorder = NULL;
3997   GList *list;
3998   gint mouse_x;
3999
4000   gdk_window_get_device_position (tree_view->priv->header_window,
4001                                   gdk_event_get_device (event),
4002                                   &mouse_x, NULL, NULL);
4003   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4004     {
4005       reorder = (GtkTreeViewColumnReorder *) list->data;
4006       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4007         break;
4008       reorder = NULL;
4009     }
4010
4011   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4012       return;*/
4013
4014   tree_view->priv->cur_reorder = reorder;
4015   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4016 }
4017
4018 static void
4019 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4020 {
4021   GdkRectangle visible_rect;
4022   gint y;
4023   gint offset;
4024
4025   gdk_window_get_device_position (tree_view->priv->bin_window,
4026                                   gdk_device_manager_get_client_pointer (
4027                                     gdk_display_get_device_manager (
4028                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4029                                   NULL, &y, NULL);
4030   y += tree_view->priv->dy;
4031
4032   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4033
4034   /* see if we are near the edge. */
4035   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4036   if (offset > 0)
4037     {
4038       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4039       if (offset < 0)
4040         return;
4041     }
4042
4043   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4044                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4045 }
4046
4047 static gboolean
4048 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4049                                      GdkEvent    *event)
4050 {
4051   GdkRectangle visible_rect;
4052   gint x;
4053   gint offset;
4054
4055   gdk_window_get_device_position (tree_view->priv->bin_window,
4056                                   gdk_event_get_device (event),
4057                                   &x, NULL, NULL);
4058
4059   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4060
4061   /* See if we are near the edge. */
4062   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4063   if (offset > 0)
4064     {
4065       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4066       if (offset < 0)
4067         return TRUE;
4068     }
4069   offset = offset/3;
4070
4071   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4072                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4073
4074   return TRUE;
4075
4076 }
4077
4078 static gboolean
4079 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4080                                   GdkEventMotion *event)
4081 {
4082   GtkAllocation allocation, button_allocation;
4083   GtkTreeView *tree_view = (GtkTreeView *) widget;
4084   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4085   GtkWidget *button;
4086   gint x, y;
4087
4088   /* Sanity Check */
4089   if ((column == NULL) ||
4090       (event->window != tree_view->priv->drag_window))
4091     return FALSE;
4092
4093   button = gtk_tree_view_column_get_button (column);
4094
4095   /* Handle moving the header */
4096   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4097   gtk_widget_get_allocation (widget, &allocation);
4098   gtk_widget_get_allocation (button, &button_allocation);
4099   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4100              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4101   gdk_window_move (tree_view->priv->drag_window, x, y);
4102
4103   /* autoscroll, if needed */
4104   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4105   /* Update the current reorder position and arrow; */
4106   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4107
4108   return TRUE;
4109 }
4110
4111 static void
4112 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4113 {
4114   remove_scroll_timeout (tree_view);
4115   gtk_grab_remove (GTK_WIDGET (tree_view));
4116
4117   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4118     {
4119       GtkTreePath *tmp_path;
4120
4121       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4122
4123       /* The anchor path should be set to the start path */
4124       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4125                                                  tree_view->priv->rubber_band_start_node);
4126
4127       if (tree_view->priv->anchor)
4128         gtk_tree_row_reference_free (tree_view->priv->anchor);
4129
4130       tree_view->priv->anchor =
4131         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4132                                           tree_view->priv->model,
4133                                           tmp_path);
4134
4135       gtk_tree_path_free (tmp_path);
4136
4137       /* ... and the cursor to the end path */
4138       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4139                                                  tree_view->priv->rubber_band_end_node);
4140       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4141       gtk_tree_path_free (tmp_path);
4142
4143       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4144     }
4145
4146   /* Clear status variables */
4147   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4148   tree_view->priv->rubber_band_extend = FALSE;
4149   tree_view->priv->rubber_band_modify = FALSE;
4150
4151   tree_view->priv->rubber_band_start_node = NULL;
4152   tree_view->priv->rubber_band_start_tree = NULL;
4153   tree_view->priv->rubber_band_end_node = NULL;
4154   tree_view->priv->rubber_band_end_tree = NULL;
4155 }
4156
4157 static void
4158 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4159                                                  GtkRBTree   *start_tree,
4160                                                  GtkRBNode   *start_node,
4161                                                  GtkRBTree   *end_tree,
4162                                                  GtkRBNode   *end_node,
4163                                                  gboolean     select,
4164                                                  gboolean     skip_start,
4165                                                  gboolean     skip_end)
4166 {
4167   if (start_node == end_node)
4168     return;
4169
4170   /* We skip the first node and jump inside the loop */
4171   if (skip_start)
4172     goto skip_first;
4173
4174   do
4175     {
4176       /* Small optimization by assuming insensitive nodes are never
4177        * selected.
4178        */
4179       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4180         {
4181           GtkTreePath *path;
4182           gboolean selectable;
4183
4184           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4185           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4186           gtk_tree_path_free (path);
4187
4188           if (!selectable)
4189             goto node_not_selectable;
4190         }
4191
4192       if (select)
4193         {
4194           if (tree_view->priv->rubber_band_extend)
4195             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4196           else if (tree_view->priv->rubber_band_modify)
4197             {
4198               /* Toggle the selection state */
4199               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4200                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4201               else
4202                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4203             }
4204           else
4205             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4206         }
4207       else
4208         {
4209           /* Mirror the above */
4210           if (tree_view->priv->rubber_band_extend)
4211             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4212           else if (tree_view->priv->rubber_band_modify)
4213             {
4214               /* Toggle the selection state */
4215               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4216                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4217               else
4218                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4219             }
4220           else
4221             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4222         }
4223
4224       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4225
4226 node_not_selectable:
4227       if (start_node == end_node)
4228         break;
4229
4230 skip_first:
4231
4232       if (start_node->children)
4233         {
4234           start_tree = start_node->children;
4235           start_node = _gtk_rbtree_first (start_tree);
4236         }
4237       else
4238         {
4239           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4240
4241           if (!start_tree)
4242             /* Ran out of tree */
4243             break;
4244         }
4245
4246       if (skip_end && start_node == end_node)
4247         break;
4248     }
4249   while (TRUE);
4250 }
4251
4252 static void
4253 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4254 {
4255   GtkRBTree *start_tree, *end_tree;
4256   GtkRBNode *start_node, *end_node;
4257
4258   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
4259   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
4260
4261   /* Handle the start area first */
4262   if (!tree_view->priv->rubber_band_start_node)
4263     {
4264       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4265                                                        start_tree,
4266                                                        start_node,
4267                                                        end_tree,
4268                                                        end_node,
4269                                                        TRUE,
4270                                                        FALSE,
4271                                                        FALSE);
4272     }
4273   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4274            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4275     {
4276       /* New node is above the old one; selection became bigger */
4277       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4278                                                        start_tree,
4279                                                        start_node,
4280                                                        tree_view->priv->rubber_band_start_tree,
4281                                                        tree_view->priv->rubber_band_start_node,
4282                                                        TRUE,
4283                                                        FALSE,
4284                                                        TRUE);
4285     }
4286   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4287            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4288     {
4289       /* New node is below the old one; selection became smaller */
4290       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4291                                                        tree_view->priv->rubber_band_start_tree,
4292                                                        tree_view->priv->rubber_band_start_node,
4293                                                        start_tree,
4294                                                        start_node,
4295                                                        FALSE,
4296                                                        FALSE,
4297                                                        TRUE);
4298     }
4299
4300   tree_view->priv->rubber_band_start_tree = start_tree;
4301   tree_view->priv->rubber_band_start_node = start_node;
4302
4303   /* Next, handle the end area */
4304   if (!tree_view->priv->rubber_band_end_node)
4305     {
4306       /* In the event this happens, start_node was also NULL; this case is
4307        * handled above.
4308        */
4309     }
4310   else if (!end_node)
4311     {
4312       /* Find the last node in the tree */
4313       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4314                                &end_tree, &end_node);
4315
4316       /* Selection reached end of the tree */
4317       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4318                                                        tree_view->priv->rubber_band_end_tree,
4319                                                        tree_view->priv->rubber_band_end_node,
4320                                                        end_tree,
4321                                                        end_node,
4322                                                        TRUE,
4323                                                        TRUE,
4324                                                        FALSE);
4325     }
4326   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4327            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4328     {
4329       /* New node is below the old one; selection became bigger */
4330       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4331                                                        tree_view->priv->rubber_band_end_tree,
4332                                                        tree_view->priv->rubber_band_end_node,
4333                                                        end_tree,
4334                                                        end_node,
4335                                                        TRUE,
4336                                                        TRUE,
4337                                                        FALSE);
4338     }
4339   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4340            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4341     {
4342       /* New node is above the old one; selection became smaller */
4343       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4344                                                        end_tree,
4345                                                        end_node,
4346                                                        tree_view->priv->rubber_band_end_tree,
4347                                                        tree_view->priv->rubber_band_end_node,
4348                                                        FALSE,
4349                                                        TRUE,
4350                                                        FALSE);
4351     }
4352
4353   tree_view->priv->rubber_band_end_tree = end_tree;
4354   tree_view->priv->rubber_band_end_node = end_node;
4355 }
4356
4357 static void
4358 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4359 {
4360   gint x, y;
4361   GdkRectangle old_area;
4362   GdkRectangle new_area;
4363   GdkRectangle common;
4364   cairo_region_t *invalid_region;
4365
4366   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4367   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4368   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4369   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4370
4371   gdk_window_get_device_position (tree_view->priv->bin_window,
4372                                   gdk_device_manager_get_client_pointer (
4373                                     gdk_display_get_device_manager (
4374                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4375                                   &x, &y, NULL);
4376
4377   x = MAX (x, 0);
4378   y = MAX (y, 0) + tree_view->priv->dy;
4379
4380   new_area.x = MIN (tree_view->priv->press_start_x, x);
4381   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4382   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4383   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4384
4385   invalid_region = cairo_region_create_rectangle (&old_area);
4386   cairo_region_union_rectangle (invalid_region, &new_area);
4387
4388   gdk_rectangle_intersect (&old_area, &new_area, &common);
4389   if (common.width > 2 && common.height > 2)
4390     {
4391       cairo_region_t *common_region;
4392
4393       /* make sure the border is invalidated */
4394       common.x += 1;
4395       common.y += 1;
4396       common.width -= 2;
4397       common.height -= 2;
4398
4399       common_region = cairo_region_create_rectangle (&common);
4400
4401       cairo_region_subtract (invalid_region, common_region);
4402       cairo_region_destroy (common_region);
4403     }
4404
4405   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4406
4407   cairo_region_destroy (invalid_region);
4408
4409   tree_view->priv->rubber_band_x = x;
4410   tree_view->priv->rubber_band_y = y;
4411
4412   gtk_tree_view_update_rubber_band_selection (tree_view);
4413 }
4414
4415 static void
4416 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4417                                  cairo_t      *cr)
4418 {
4419   GdkRectangle rect;
4420   GtkStyleContext *context;
4421
4422   cairo_save (cr);
4423
4424   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4425
4426   gtk_style_context_save (context);
4427   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4428
4429   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4430   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4431   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4432   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4433
4434   gdk_cairo_rectangle (cr, &rect);
4435   cairo_clip (cr);
4436
4437   gtk_render_background (context, cr,
4438                          rect.x, rect.y,
4439                          rect.width, rect.height);
4440   gtk_render_frame (context, cr,
4441                     rect.x, rect.y,
4442                     rect.width, rect.height);
4443
4444   gtk_style_context_restore (context);
4445   cairo_restore (cr);
4446 }
4447
4448 static gboolean
4449 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4450                                  GdkEventMotion *event)
4451 {
4452   GtkTreeView *tree_view;
4453   GtkRBTree *tree;
4454   GtkRBNode *node;
4455   gint new_y;
4456
4457   tree_view = (GtkTreeView *) widget;
4458
4459   if (tree_view->priv->tree == NULL)
4460     return FALSE;
4461
4462   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4463     {
4464       gtk_grab_add (GTK_WIDGET (tree_view));
4465       gtk_tree_view_update_rubber_band (tree_view);
4466
4467       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4468     }
4469   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4470     {
4471       gtk_tree_view_update_rubber_band (tree_view);
4472
4473       add_scroll_timeout (tree_view);
4474     }
4475
4476   /* only check for an initiated drag when a button is pressed */
4477   if (tree_view->priv->pressed_button >= 0
4478       && !tree_view->priv->rubber_band_status)
4479     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4480
4481   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4482   if (new_y < 0)
4483     new_y = 0;
4484
4485   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4486
4487   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4488   if ((tree_view->priv->button_pressed_node != NULL) &&
4489       (tree_view->priv->button_pressed_node != node))
4490     node = NULL;
4491
4492   tree_view->priv->event_last_x = event->x;
4493   tree_view->priv->event_last_y = event->y;
4494
4495   prelight_or_select (tree_view, tree, node, event->x, event->y);
4496
4497   return TRUE;
4498 }
4499
4500 static gboolean
4501 gtk_tree_view_motion (GtkWidget      *widget,
4502                       GdkEventMotion *event)
4503 {
4504   GtkTreeView *tree_view;
4505
4506   tree_view = (GtkTreeView *) widget;
4507
4508   /* Resizing a column */
4509   if (tree_view->priv->in_column_resize)
4510     return gtk_tree_view_motion_resize_column (widget, event);
4511
4512   /* Drag column */
4513   if (tree_view->priv->in_column_drag)
4514     return gtk_tree_view_motion_drag_column (widget, event);
4515
4516   /* Sanity check it */
4517   if (event->window == tree_view->priv->bin_window)
4518     return gtk_tree_view_motion_bin_window (widget, event);
4519
4520   return FALSE;
4521 }
4522
4523 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4524  * the tree is empty.
4525  */
4526 static void
4527 invalidate_empty_focus (GtkTreeView *tree_view)
4528 {
4529   GdkRectangle area;
4530
4531   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4532     return;
4533
4534   area.x = 0;
4535   area.y = 0;
4536   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4537   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4538   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4539 }
4540
4541 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4542  * is empty.
4543  */
4544 static void
4545 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4546 {
4547   GtkWidget *widget = GTK_WIDGET (tree_view);
4548   gint w, h;
4549
4550   if (!gtk_widget_has_visible_focus (widget))
4551     return;
4552
4553   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4554   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4555
4556   if (w > 0 && h > 0)
4557     {
4558       GtkStyleContext *context;
4559
4560       context = gtk_widget_get_style_context (widget);
4561
4562       gtk_render_focus (context, cr, 1, 1, w, h);
4563     }
4564 }
4565
4566 typedef enum {
4567   GTK_TREE_VIEW_GRID_LINE,
4568   GTK_TREE_VIEW_TREE_LINE,
4569   GTK_TREE_VIEW_FOREGROUND_LINE
4570 } GtkTreeViewLineType;
4571
4572 static void
4573 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4574                          cairo_t             *cr,
4575                          GtkTreeViewLineType  type,
4576                          int                  x1,
4577                          int                  y1,
4578                          int                  x2,
4579                          int                  y2)
4580 {
4581   cairo_save (cr);
4582
4583   switch (type)
4584     {
4585     case GTK_TREE_VIEW_TREE_LINE:
4586       cairo_set_source_rgb (cr, 0, 0, 0);
4587       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4588       if (tree_view->priv->tree_line_dashes[0])
4589         cairo_set_dash (cr,
4590                         tree_view->priv->tree_line_dashes,
4591                         2, 0.5);
4592       break;
4593     case GTK_TREE_VIEW_GRID_LINE:
4594       cairo_set_source_rgb (cr, 0, 0, 0);
4595       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4596       if (tree_view->priv->grid_line_dashes[0])
4597         cairo_set_dash (cr,
4598                         tree_view->priv->grid_line_dashes,
4599                         2, 0.5);
4600       break;
4601     default:
4602       g_assert_not_reached ();
4603       /* fall through */
4604     case GTK_TREE_VIEW_FOREGROUND_LINE:
4605       {
4606         GtkStyleContext *context;
4607         GtkStateFlags state;
4608         GdkRGBA color;
4609
4610         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4611         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4612
4613         cairo_set_line_width (cr, 1.0);
4614         gtk_style_context_get_color (context, state, &color);
4615         gdk_cairo_set_source_rgba (cr, &color);
4616       }
4617
4618       break;
4619     }
4620
4621   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4622   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4623   cairo_stroke (cr);
4624
4625   cairo_restore (cr);
4626 }
4627
4628 static void
4629 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4630                                cairo_t        *cr,
4631                                gint            n_visible_columns)
4632 {
4633   GList *list = tree_view->priv->columns;
4634   gint i = 0;
4635   gint current_x = 0;
4636
4637   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4638       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4639     return;
4640
4641   /* Only draw the lines for visible rows and columns */
4642   for (list = tree_view->priv->columns; list; list = list->next, i++)
4643     {
4644       GtkTreeViewColumn *column = list->data;
4645
4646       /* We don't want a line for the last column */
4647       if (i == n_visible_columns - 1)
4648         break;
4649
4650       if (!gtk_tree_view_column_get_visible (column))
4651         continue;
4652
4653       current_x += gtk_tree_view_column_get_width (column);
4654
4655       gtk_tree_view_draw_line (tree_view, cr,
4656                                GTK_TREE_VIEW_GRID_LINE,
4657                                current_x - 1, 0,
4658                                current_x - 1, tree_view->priv->height);
4659     }
4660 }
4661
4662 /* Warning: Very scary function.
4663  * Modify at your own risk
4664  *
4665  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4666  * FIXME: It's not...
4667  */
4668 static gboolean
4669 gtk_tree_view_bin_draw (GtkWidget      *widget,
4670                         cairo_t        *cr)
4671 {
4672   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4673   GtkTreePath *path;
4674   GtkRBTree *tree;
4675   GList *list;
4676   GtkRBNode *node;
4677   GtkRBNode *drag_highlight = NULL;
4678   GtkRBTree *drag_highlight_tree = NULL;
4679   GtkTreeIter iter;
4680   gint new_y;
4681   gint y_offset, cell_offset;
4682   gint max_height;
4683   gint depth;
4684   GdkRectangle background_area;
4685   GdkRectangle cell_area;
4686   GdkRectangle clip;
4687   guint flags;
4688   gint highlight_x;
4689   gint expander_cell_width;
4690   gint bin_window_width;
4691   gint bin_window_height;
4692   GtkTreePath *drag_dest_path;
4693   GList *first_column, *last_column;
4694   gint vertical_separator;
4695   gint horizontal_separator;
4696   gint focus_line_width;
4697   gboolean allow_rules;
4698   gboolean has_can_focus_cell;
4699   gboolean rtl;
4700   gint n_visible_columns;
4701   gint grid_line_width;
4702   gboolean draw_vgrid_lines, draw_hgrid_lines;
4703   GtkStyleContext *context;
4704   gboolean parity;
4705
4706   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4707   context = gtk_widget_get_style_context (widget);
4708
4709   gtk_widget_style_get (widget,
4710                         "horizontal-separator", &horizontal_separator,
4711                         "vertical-separator", &vertical_separator,
4712                         "allow-rules", &allow_rules,
4713                         "focus-line-width", &focus_line_width,
4714                         NULL);
4715
4716   if (tree_view->priv->tree == NULL)
4717     {
4718       draw_empty_focus (tree_view, cr);
4719       return TRUE;
4720     }
4721
4722   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4723   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4724   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4725   cairo_clip (cr);
4726   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4727     return TRUE;
4728
4729   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4730
4731   if (new_y < 0)
4732     new_y = 0;
4733   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4734
4735   if (tree_view->priv->height < bin_window_height)
4736     {
4737       gtk_style_context_save (context);
4738       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4739
4740       gtk_render_background (context, cr,
4741                              0, tree_view->priv->height,
4742                              bin_window_width,
4743                              bin_window_height - tree_view->priv->height);
4744
4745       gtk_style_context_restore (context);
4746     }
4747
4748   if (node == NULL)
4749     return TRUE;
4750
4751   /* find the path for the node */
4752   path = _gtk_tree_path_new_from_rbtree (tree, node);
4753   gtk_tree_model_get_iter (tree_view->priv->model,
4754                            &iter,
4755                            path);
4756   depth = gtk_tree_path_get_depth (path);
4757   gtk_tree_path_free (path);
4758
4759   drag_dest_path = NULL;
4760
4761   if (tree_view->priv->drag_dest_row)
4762     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4763
4764   if (drag_dest_path)
4765     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4766                               &drag_highlight_tree, &drag_highlight);
4767
4768   draw_vgrid_lines =
4769     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4770     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4771   draw_hgrid_lines =
4772     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4773     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4774
4775   if (draw_vgrid_lines || draw_hgrid_lines)
4776     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4777
4778   n_visible_columns = 0;
4779   for (list = tree_view->priv->columns; list; list = list->next)
4780     {
4781       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4782         continue;
4783       n_visible_columns ++;
4784     }
4785
4786   /* Find the last column */
4787   for (last_column = g_list_last (tree_view->priv->columns);
4788        last_column &&
4789        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4790        last_column = last_column->prev)
4791     ;
4792
4793   /* and the first */
4794   for (first_column = g_list_first (tree_view->priv->columns);
4795        first_column &&
4796        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4797        first_column = first_column->next)
4798     ;
4799
4800   /* Actually process the expose event.  To do this, we want to
4801    * start at the first node of the event, and walk the tree in
4802    * order, drawing each successive node.
4803    */
4804
4805   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4806
4807   do
4808     {
4809       gboolean is_separator = FALSE;
4810       gboolean is_first = FALSE;
4811       gboolean is_last = FALSE;
4812       gint n_col = 0;
4813
4814       parity = !parity;
4815       is_separator = row_is_separator (tree_view, &iter, NULL);
4816
4817       max_height = gtk_tree_view_get_row_height (tree_view, node);
4818
4819       cell_offset = 0;
4820       highlight_x = 0; /* should match x coord of first cell */
4821       expander_cell_width = 0;
4822
4823       background_area.y = y_offset + clip.y;
4824       background_area.height = max_height;
4825
4826       flags = 0;
4827
4828       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4829         flags |= GTK_CELL_RENDERER_PRELIT;
4830
4831       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4832         flags |= GTK_CELL_RENDERER_SELECTED;
4833
4834       /* we *need* to set cell data on all cells before the call
4835        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4836        * return a correct value.
4837        */
4838       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4839            list;
4840            list = (rtl ? list->prev : list->next))
4841         {
4842           GtkTreeViewColumn *column = list->data;
4843           gtk_tree_view_column_cell_set_cell_data (column,
4844                                                    tree_view->priv->model,
4845                                                    &iter,
4846                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4847                                                    node->children?TRUE:FALSE);
4848         }
4849
4850       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4851
4852       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4853            list;
4854            list = (rtl ? list->prev : list->next))
4855         {
4856           GtkTreeViewColumn *column = list->data;
4857           GtkRegionFlags row_flags = 0, column_flags = 0;
4858           GtkStateFlags state = 0;
4859           gint width;
4860           gboolean draw_focus;
4861
4862           if (!gtk_tree_view_column_get_visible (column))
4863             continue;
4864
4865           n_col++;
4866           width = gtk_tree_view_column_get_width (column);
4867
4868           if (cell_offset > clip.x + clip.width ||
4869               cell_offset + width < clip.x)
4870             {
4871               cell_offset += width;
4872               continue;
4873             }
4874
4875           if (gtk_tree_view_column_get_sort_indicator (column))
4876             flags |= GTK_CELL_RENDERER_SORTED;
4877           else
4878             flags &= ~GTK_CELL_RENDERER_SORTED;
4879
4880           if (tree_view->priv->cursor_node == node)
4881             flags |= GTK_CELL_RENDERER_FOCUSED;
4882           else
4883             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4884
4885           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
4886             flags |= GTK_CELL_RENDERER_EXPANDABLE;
4887           else
4888             flags &= ~GTK_CELL_RENDERER_EXPANDABLE;
4889
4890           if (node->children)
4891             flags |= GTK_CELL_RENDERER_EXPANDED;
4892           else
4893             flags &= ~GTK_CELL_RENDERER_EXPANDED;
4894
4895           background_area.x = cell_offset;
4896           background_area.width = width;
4897
4898           cell_area = background_area;
4899           cell_area.y += vertical_separator / 2;
4900           cell_area.x += horizontal_separator / 2;
4901           cell_area.height -= vertical_separator;
4902           cell_area.width -= horizontal_separator;
4903
4904           if (draw_vgrid_lines)
4905             {
4906               if (list == first_column)
4907                 {
4908                   cell_area.width -= grid_line_width / 2;
4909                 }
4910               else if (list == last_column)
4911                 {
4912                   cell_area.x += grid_line_width / 2;
4913                   cell_area.width -= grid_line_width / 2;
4914                 }
4915               else
4916                 {
4917                   cell_area.x += grid_line_width / 2;
4918                   cell_area.width -= grid_line_width;
4919                 }
4920             }
4921
4922           if (draw_hgrid_lines)
4923             {
4924               cell_area.y += grid_line_width / 2;
4925               cell_area.height -= grid_line_width;
4926             }
4927
4928           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4929             {
4930               cell_offset += gtk_tree_view_column_get_width (column);
4931               continue;
4932             }
4933
4934           gtk_tree_view_column_cell_set_cell_data (column,
4935                                                    tree_view->priv->model,
4936                                                    &iter,
4937                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4938                                                    node->children?TRUE:FALSE);
4939
4940           /* Select the detail for drawing the cell.  relevant
4941            * factors are parity, sortedness, and whether to
4942            * display rules.
4943            */
4944           if (allow_rules && tree_view->priv->has_rules)
4945             {
4946               if (parity)
4947                 row_flags |= GTK_REGION_ODD;
4948               else
4949                 row_flags |= GTK_REGION_EVEN;
4950             }
4951
4952           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4953               n_visible_columns >= 3)
4954             column_flags |= GTK_REGION_SORTED;
4955
4956           is_first = (rtl ? !list->next : !list->prev);
4957           is_last = (rtl ? !list->prev : !list->next);
4958
4959           if (is_first)
4960             column_flags |= GTK_REGION_FIRST;
4961
4962           if (is_last)
4963             column_flags |= GTK_REGION_LAST;
4964
4965           if ((n_col % 2) == 0)
4966             column_flags |= GTK_REGION_EVEN;
4967           else
4968             column_flags |= GTK_REGION_ODD;
4969
4970           gtk_style_context_save (context);
4971
4972           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4973           gtk_style_context_set_state (context, state);
4974
4975           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4976           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4977           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4978
4979           if (node == tree_view->priv->cursor_node && has_can_focus_cell
4980               && ((column == tree_view->priv->focus_column
4981                    && tree_view->priv->draw_keyfocus &&
4982                    gtk_widget_has_visible_focus (widget))
4983                   || (column == tree_view->priv->edited_column)))
4984             draw_focus = TRUE;
4985           else
4986             draw_focus = FALSE;
4987
4988           /* Draw background */
4989           gtk_render_background (context, cr,
4990                                  background_area.x,
4991                                  background_area.y,
4992                                  background_area.width,
4993                                  background_area.height);
4994
4995           /* Draw frame */
4996           gtk_render_frame (context, cr,
4997                             background_area.x,
4998                             background_area.y,
4999                             background_area.width,
5000                             background_area.height);
5001
5002           if (gtk_tree_view_is_expander_column (tree_view, column))
5003             {
5004               if (!rtl)
5005                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5006               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5007
5008               if (gtk_tree_view_draw_expanders (tree_view))
5009                 {
5010                   if (!rtl)
5011                     cell_area.x += depth * tree_view->priv->expander_size;
5012                   cell_area.width -= depth * tree_view->priv->expander_size;
5013                 }
5014
5015               /* If we have an expander column, the highlight underline
5016                * starts with that column, so that it indicates which
5017                * level of the tree we're dropping at.
5018                */
5019               highlight_x = cell_area.x;
5020               expander_cell_width = cell_area.width;
5021
5022               if (is_separator)
5023                 {
5024                   gtk_style_context_save (context);
5025                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5026
5027                   gtk_render_line (context, cr,
5028                                    cell_area.x,
5029                                    cell_area.y + cell_area.height / 2,
5030                                    cell_area.x + cell_area.width,
5031                                    cell_area.y + cell_area.height / 2);
5032
5033                   gtk_style_context_restore (context);
5034                 }
5035               else
5036                 {
5037                   _gtk_tree_view_column_cell_render (column,
5038                                                      cr,
5039                                                      &background_area,
5040                                                      &cell_area,
5041                                                      flags,
5042                                                      draw_focus);
5043                 }
5044
5045               if (gtk_tree_view_draw_expanders (tree_view)
5046                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5047                 {
5048                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5049                                             cr,
5050                                             tree,
5051                                             node);
5052                 }
5053             }
5054           else
5055             {
5056               if (is_separator)
5057                 {
5058                   gtk_style_context_save (context);
5059                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5060
5061                   gtk_render_line (context, cr,
5062                                    cell_area.x,
5063                                    cell_area.y + cell_area.height / 2,
5064                                    cell_area.x + cell_area.width,
5065                                    cell_area.y + cell_area.height / 2);
5066
5067                   gtk_style_context_restore (context);
5068                 }
5069               else
5070                 _gtk_tree_view_column_cell_render (column,
5071                                                    cr,
5072                                                    &background_area,
5073                                                    &cell_area,
5074                                                    flags,
5075                                                    draw_focus);
5076             }
5077
5078           if (draw_hgrid_lines)
5079             {
5080               if (background_area.y > 0)
5081                 gtk_tree_view_draw_line (tree_view, cr,
5082                                          GTK_TREE_VIEW_GRID_LINE,
5083                                          background_area.x, background_area.y,
5084                                          background_area.x + background_area.width,
5085                                          background_area.y);
5086
5087               if (y_offset + max_height >= clip.height)
5088                 gtk_tree_view_draw_line (tree_view, cr,
5089                                          GTK_TREE_VIEW_GRID_LINE,
5090                                          background_area.x, background_area.y + max_height,
5091                                          background_area.x + background_area.width,
5092                                          background_area.y + max_height);
5093             }
5094
5095           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5096               tree_view->priv->tree_lines_enabled)
5097             {
5098               gint x = background_area.x;
5099               gint mult = rtl ? -1 : 1;
5100               gint y0 = background_area.y;
5101               gint y1 = background_area.y + background_area.height/2;
5102               gint y2 = background_area.y + background_area.height;
5103
5104               if (rtl)
5105                 x += background_area.width - 1;
5106
5107               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5108                   && depth > 1)
5109                 {
5110                   gtk_tree_view_draw_line (tree_view, cr,
5111                                            GTK_TREE_VIEW_TREE_LINE,
5112                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5113                                            y1,
5114                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5115                                            y1);
5116                 }
5117               else if (depth > 1)
5118                 {
5119                   gtk_tree_view_draw_line (tree_view, cr,
5120                                            GTK_TREE_VIEW_TREE_LINE,
5121                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5122                                            y1,
5123                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5124                                            y1);
5125                 }
5126
5127               if (depth > 1)
5128                 {
5129                   gint i;
5130                   GtkRBNode *tmp_node;
5131                   GtkRBTree *tmp_tree;
5132
5133                   if (!_gtk_rbtree_next (tree, node))
5134                     gtk_tree_view_draw_line (tree_view, cr,
5135                                              GTK_TREE_VIEW_TREE_LINE,
5136                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5137                                              y0,
5138                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5139                                              y1);
5140                   else
5141                     gtk_tree_view_draw_line (tree_view, cr,
5142                                              GTK_TREE_VIEW_TREE_LINE,
5143                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5144                                              y0,
5145                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5146                                              y2);
5147
5148                   tmp_node = tree->parent_node;
5149                   tmp_tree = tree->parent_tree;
5150
5151                   for (i = depth - 2; i > 0; i--)
5152                     {
5153                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5154                         gtk_tree_view_draw_line (tree_view, cr,
5155                                                  GTK_TREE_VIEW_TREE_LINE,
5156                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5157                                                  y0,
5158                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5159                                                  y2);
5160
5161                       tmp_node = tmp_tree->parent_node;
5162                       tmp_tree = tmp_tree->parent_tree;
5163                     }
5164                 }
5165             }
5166
5167           gtk_style_context_restore (context);
5168           cell_offset += gtk_tree_view_column_get_width (column);
5169         }
5170
5171       if (node == drag_highlight)
5172         {
5173           /* Draw indicator for the drop
5174            */
5175           gint highlight_y = -1;
5176           GtkRBTree *tree = NULL;
5177           GtkRBNode *node = NULL;
5178
5179           switch (tree_view->priv->drag_dest_pos)
5180             {
5181             case GTK_TREE_VIEW_DROP_BEFORE:
5182               highlight_y = background_area.y - 1;
5183               if (highlight_y < 0)
5184                       highlight_y = 0;
5185               break;
5186
5187             case GTK_TREE_VIEW_DROP_AFTER:
5188               highlight_y = background_area.y + background_area.height - 1;
5189               break;
5190
5191             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5192             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5193               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5194
5195               if (tree == NULL)
5196                 break;
5197
5198               gtk_render_focus (context, cr,
5199                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5200                                    - focus_line_width / 2,
5201                                 gdk_window_get_width (tree_view->priv->bin_window),
5202                                 gtk_tree_view_get_row_height (tree_view, node)
5203                                    - focus_line_width + 1);
5204               break;
5205             }
5206
5207           if (highlight_y >= 0)
5208             {
5209               gtk_tree_view_draw_line (tree_view, cr,
5210                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5211                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5212                                        highlight_y,
5213                                        rtl ? 0 : bin_window_width,
5214                                        highlight_y);
5215             }
5216         }
5217
5218       /* draw the big row-spanning focus rectangle, if needed */
5219       if (!has_can_focus_cell && node == tree_view->priv->cursor_node &&
5220           tree_view->priv->draw_keyfocus &&
5221           gtk_widget_has_visible_focus (widget))
5222         {
5223           gint tmp_y, tmp_height;
5224           GtkStateFlags focus_rect_state = 0;
5225
5226           gtk_style_context_save (context);
5227
5228           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5229           gtk_style_context_set_state (context, focus_rect_state);
5230
5231           if (draw_hgrid_lines)
5232             {
5233               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5234               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5235             }
5236           else
5237             {
5238               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5239               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5240             }
5241
5242           gtk_render_focus (context, cr,
5243                             0, tmp_y,
5244                             gdk_window_get_width (tree_view->priv->bin_window),
5245                             tmp_height);
5246
5247           gtk_style_context_restore (context);
5248         }
5249
5250       y_offset += max_height;
5251       if (node->children)
5252         {
5253           GtkTreeIter parent = iter;
5254           gboolean has_child;
5255
5256           tree = node->children;
5257           node = _gtk_rbtree_first (tree);
5258
5259           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5260                                                     &iter,
5261                                                     &parent);
5262           depth++;
5263
5264           /* Sanity Check! */
5265           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5266         }
5267       else
5268         {
5269           gboolean done = FALSE;
5270
5271           do
5272             {
5273               node = _gtk_rbtree_next (tree, node);
5274               if (node != NULL)
5275                 {
5276                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5277                   done = TRUE;
5278
5279                   /* Sanity Check! */
5280                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5281                 }
5282               else
5283                 {
5284                   GtkTreeIter parent_iter = iter;
5285                   gboolean has_parent;
5286
5287                   node = tree->parent_node;
5288                   tree = tree->parent_tree;
5289                   if (tree == NULL)
5290                     /* we should go to done to free some memory */
5291                     goto done;
5292                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5293                                                            &iter,
5294                                                            &parent_iter);
5295                   depth--;
5296
5297                   /* Sanity check */
5298                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5299                 }
5300             }
5301           while (!done);
5302         }
5303     }
5304   while (y_offset < clip.height);
5305
5306 done:
5307   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5308
5309   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5310     gtk_tree_view_paint_rubber_band (tree_view, cr);
5311
5312   if (drag_dest_path)
5313     gtk_tree_path_free (drag_dest_path);
5314
5315   return FALSE;
5316 }
5317
5318 static gboolean
5319 gtk_tree_view_draw (GtkWidget *widget,
5320                     cairo_t   *cr)
5321 {
5322   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5323   GtkWidget   *button;
5324
5325   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5326     {
5327       GtkStyleContext *context;
5328       GList *tmp_list;
5329
5330       context = gtk_widget_get_style_context (widget);
5331
5332       cairo_save (cr);
5333
5334       gtk_style_context_save (context);
5335       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5336
5337       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5338
5339       gtk_tree_view_bin_draw (widget, cr);
5340
5341       gtk_style_context_restore (context);
5342       cairo_restore (cr);
5343
5344       /* We can't just chain up to Container::draw as it will try to send the
5345        * event to the headers, so we handle propagating it to our children
5346        * (eg. widgets being edited) ourselves.
5347        */
5348       tmp_list = tree_view->priv->children;
5349       while (tmp_list)
5350         {
5351           GtkTreeViewChild *child = tmp_list->data;
5352           tmp_list = tmp_list->next;
5353
5354           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5355         }
5356     }
5357
5358   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5359     {
5360       GList *list;
5361
5362       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5363         {
5364           GtkTreeViewColumn *column = list->data;
5365
5366           if (column == tree_view->priv->drag_column)
5367             continue;
5368
5369           if (gtk_tree_view_column_get_visible (column))
5370             {
5371               button = gtk_tree_view_column_get_button (column);
5372               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5373                                             button, cr);
5374             }
5375         }
5376     }
5377
5378   if (tree_view->priv->drag_window &&
5379       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5380     {
5381       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5382       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5383                                     button, cr);
5384     }
5385
5386   return FALSE;
5387 }
5388
5389 enum
5390 {
5391   DROP_HOME,
5392   DROP_RIGHT,
5393   DROP_LEFT,
5394   DROP_END
5395 };
5396
5397 /* returns 0x1 when no column has been found -- yes it's hackish */
5398 static GtkTreeViewColumn *
5399 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5400                                GtkTreeViewColumn *column,
5401                                gint               drop_position)
5402 {
5403   GtkTreeViewColumn *left_column = NULL;
5404   GtkTreeViewColumn *cur_column = NULL;
5405   GList *tmp_list;
5406
5407   if (!gtk_tree_view_column_get_reorderable (column))
5408     return (GtkTreeViewColumn *)0x1;
5409
5410   switch (drop_position)
5411     {
5412       case DROP_HOME:
5413         /* find first column where we can drop */
5414         tmp_list = tree_view->priv->columns;
5415         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5416           return (GtkTreeViewColumn *)0x1;
5417
5418         while (tmp_list)
5419           {
5420             g_assert (tmp_list);
5421
5422             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5423             tmp_list = tmp_list->next;
5424
5425             if (left_column &&
5426                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5427               continue;
5428
5429             if (!tree_view->priv->column_drop_func)
5430               return left_column;
5431
5432             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5433               {
5434                 left_column = cur_column;
5435                 continue;
5436               }
5437
5438             return left_column;
5439           }
5440
5441         if (!tree_view->priv->column_drop_func)
5442           return left_column;
5443
5444         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5445           return left_column;
5446         else
5447           return (GtkTreeViewColumn *)0x1;
5448         break;
5449
5450       case DROP_RIGHT:
5451         /* find first column after column where we can drop */
5452         tmp_list = tree_view->priv->columns;
5453
5454         for (; tmp_list; tmp_list = tmp_list->next)
5455           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5456             break;
5457
5458         if (!tmp_list || !tmp_list->next)
5459           return (GtkTreeViewColumn *)0x1;
5460
5461         tmp_list = tmp_list->next;
5462         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5463         tmp_list = tmp_list->next;
5464
5465         while (tmp_list)
5466           {
5467             g_assert (tmp_list);
5468
5469             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5470             tmp_list = tmp_list->next;
5471
5472             if (left_column &&
5473                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5474               {
5475                 left_column = cur_column;
5476                 if (tmp_list)
5477                   tmp_list = tmp_list->next;
5478                 continue;
5479               }
5480
5481             if (!tree_view->priv->column_drop_func)
5482               return left_column;
5483
5484             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5485               {
5486                 left_column = cur_column;
5487                 continue;
5488               }
5489
5490             return left_column;
5491           }
5492
5493         if (!tree_view->priv->column_drop_func)
5494           return left_column;
5495
5496         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5497           return left_column;
5498         else
5499           return (GtkTreeViewColumn *)0x1;
5500         break;
5501
5502       case DROP_LEFT:
5503         /* find first column before column where we can drop */
5504         tmp_list = tree_view->priv->columns;
5505
5506         for (; tmp_list; tmp_list = tmp_list->next)
5507           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5508             break;
5509
5510         if (!tmp_list || !tmp_list->prev)
5511           return (GtkTreeViewColumn *)0x1;
5512
5513         tmp_list = tmp_list->prev;
5514         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5515         tmp_list = tmp_list->prev;
5516
5517         while (tmp_list)
5518           {
5519             g_assert (tmp_list);
5520
5521             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5522
5523             if (left_column &&
5524                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5525               {
5526                 /*if (!tmp_list->prev)
5527                   return (GtkTreeViewColumn *)0x1;
5528                   */
5529 /*
5530                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5531                 tmp_list = tmp_list->prev->prev;
5532                 continue;*/
5533
5534                 cur_column = left_column;
5535                 if (tmp_list)
5536                   tmp_list = tmp_list->prev;
5537                 continue;
5538               }
5539
5540             if (!tree_view->priv->column_drop_func)
5541               return left_column;
5542
5543             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5544               return left_column;
5545
5546             cur_column = left_column;
5547             tmp_list = tmp_list->prev;
5548           }
5549
5550         if (!tree_view->priv->column_drop_func)
5551           return NULL;
5552
5553         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5554           return NULL;
5555         else
5556           return (GtkTreeViewColumn *)0x1;
5557         break;
5558
5559       case DROP_END:
5560         /* same as DROP_HOME case, but doing it backwards */
5561         tmp_list = g_list_last (tree_view->priv->columns);
5562         cur_column = NULL;
5563
5564         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5565           return (GtkTreeViewColumn *)0x1;
5566
5567         while (tmp_list)
5568           {
5569             g_assert (tmp_list);
5570
5571             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5572
5573             if (left_column &&
5574                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5575               {
5576                 cur_column = left_column;
5577                 tmp_list = tmp_list->prev;
5578               }
5579
5580             if (!tree_view->priv->column_drop_func)
5581               return left_column;
5582
5583             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5584               return left_column;
5585
5586             cur_column = left_column;
5587             tmp_list = tmp_list->prev;
5588           }
5589
5590         if (!tree_view->priv->column_drop_func)
5591           return NULL;
5592
5593         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5594           return NULL;
5595         else
5596           return (GtkTreeViewColumn *)0x1;
5597         break;
5598     }
5599
5600   return (GtkTreeViewColumn *)0x1;
5601 }
5602
5603 static gboolean
5604 gtk_tree_view_key_press (GtkWidget   *widget,
5605                          GdkEventKey *event)
5606 {
5607   GtkTreeView *tree_view = (GtkTreeView *) widget;
5608   GtkWidget   *button;
5609
5610   if (tree_view->priv->rubber_band_status)
5611     {
5612       if (event->keyval == GDK_KEY_Escape)
5613         gtk_tree_view_stop_rubber_band (tree_view);
5614
5615       return TRUE;
5616     }
5617
5618   if (tree_view->priv->in_column_drag)
5619     {
5620       if (event->keyval == GDK_KEY_Escape)
5621         {
5622           tree_view->priv->cur_reorder = NULL;
5623           gtk_tree_view_button_release_drag_column (widget, NULL);
5624         }
5625       return TRUE;
5626     }
5627
5628   if (tree_view->priv->headers_visible)
5629     {
5630       GList *focus_column;
5631       gboolean rtl;
5632
5633       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5634
5635       for (focus_column = tree_view->priv->columns;
5636            focus_column;
5637            focus_column = focus_column->next)
5638         {
5639           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5640
5641           button = gtk_tree_view_column_get_button (column);
5642           if (gtk_widget_has_focus (button))
5643             break;
5644         }
5645
5646       if (focus_column &&
5647           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5648           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5649            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5650         {
5651           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5652           gint max_width, min_width;
5653
5654           if (!gtk_tree_view_column_get_resizable (column))
5655             {
5656               gtk_widget_error_bell (widget);
5657               return TRUE;
5658             }
5659
5660           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5661               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5662             {
5663               GtkRequisition button_req;
5664               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5665               gint new_width;
5666
5667               button = gtk_tree_view_column_get_button (column);
5668
5669               gtk_widget_get_preferred_size (button, &button_req, NULL);
5670
5671               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5672               new_width -= 2;
5673               if (new_width < 0)
5674                 new_width = 0;
5675
5676               _gtk_tree_view_column_set_resized_width (column, new_width);
5677
5678               min_width = gtk_tree_view_column_get_min_width (column);
5679               if (min_width == -1)
5680                 new_width = MAX (button_req.width, new_width);
5681               else
5682                 {
5683                   new_width = MAX (min_width, new_width);
5684                 }
5685
5686               max_width = gtk_tree_view_column_get_max_width (column);
5687               if (max_width != -1)
5688                 new_width = MIN (new_width, max_width);
5689
5690               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5691
5692               if (new_width != old_width)
5693                 {
5694                   _gtk_tree_view_column_set_resized_width (column, new_width);
5695                   gtk_widget_queue_resize (widget);
5696                 }
5697               else
5698                 gtk_widget_error_bell (widget);
5699             }
5700           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5701                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5702             {
5703               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5704               gint new_width;
5705
5706               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5707               new_width += 2;
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
5724           return TRUE;
5725         }
5726
5727       if (focus_column &&
5728           (event->state & GDK_MOD1_MASK) &&
5729           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5730            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5731            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5732            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5733         {
5734           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5735
5736           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5737               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5738             {
5739               GtkTreeViewColumn *col;
5740               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5741               if (col != (GtkTreeViewColumn *)0x1)
5742                 gtk_tree_view_move_column_after (tree_view, column, col);
5743               else
5744                 gtk_widget_error_bell (widget);
5745             }
5746           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5747                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5748             {
5749               GtkTreeViewColumn *col;
5750               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5751               if (col != (GtkTreeViewColumn *)0x1)
5752                 gtk_tree_view_move_column_after (tree_view, column, col);
5753               else
5754                 gtk_widget_error_bell (widget);
5755             }
5756           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5757             {
5758               GtkTreeViewColumn *col;
5759               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5760               if (col != (GtkTreeViewColumn *)0x1)
5761                 gtk_tree_view_move_column_after (tree_view, column, col);
5762               else
5763                 gtk_widget_error_bell (widget);
5764             }
5765           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5766             {
5767               GtkTreeViewColumn *col;
5768               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5769               if (col != (GtkTreeViewColumn *)0x1)
5770                 gtk_tree_view_move_column_after (tree_view, column, col);
5771               else
5772                 gtk_widget_error_bell (widget);
5773             }
5774
5775           return TRUE;
5776         }
5777     }
5778
5779   /* Chain up to the parent class.  It handles the keybindings. */
5780   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5781     return TRUE;
5782
5783   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5784     {
5785       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5786       return FALSE;
5787     }
5788
5789   /* We pass the event to the search_entry.  If its text changes, then we start
5790    * the typeahead find capabilities. */
5791   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5792       && tree_view->priv->enable_search
5793       && !tree_view->priv->search_custom_entry_set)
5794     {
5795       GdkEvent *new_event;
5796       char *old_text;
5797       const char *new_text;
5798       gboolean retval;
5799       GdkScreen *screen;
5800       gboolean text_modified;
5801       gulong popup_menu_id;
5802
5803       gtk_tree_view_ensure_interactive_directory (tree_view);
5804
5805       /* Make a copy of the current text */
5806       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5807       new_event = gdk_event_copy ((GdkEvent *) event);
5808       g_object_unref (((GdkEventKey *) new_event)->window);
5809       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5810       gtk_widget_realize (tree_view->priv->search_window);
5811
5812       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5813                                         "popup-menu", G_CALLBACK (gtk_true),
5814                                         NULL);
5815
5816       /* Move the entry off screen */
5817       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5818       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5819                        gdk_screen_get_width (screen) + 1,
5820                        gdk_screen_get_height (screen) + 1);
5821       gtk_widget_show (tree_view->priv->search_window);
5822
5823       /* Send the event to the window.  If the preedit_changed signal is emitted
5824        * during this event, we will set priv->imcontext_changed  */
5825       tree_view->priv->imcontext_changed = FALSE;
5826       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5827       gdk_event_free (new_event);
5828       gtk_widget_hide (tree_view->priv->search_window);
5829
5830       g_signal_handler_disconnect (tree_view->priv->search_entry,
5831                                    popup_menu_id);
5832
5833       /* We check to make sure that the entry tried to handle the text, and that
5834        * the text has changed.
5835        */
5836       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5837       text_modified = strcmp (old_text, new_text) != 0;
5838       g_free (old_text);
5839       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5840           (retval && text_modified))               /* ...or the text was modified */
5841         {
5842           if (gtk_tree_view_real_start_interactive_search (tree_view,
5843                                                            gdk_event_get_device ((GdkEvent *) event),
5844                                                            FALSE))
5845             {
5846               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5847               return TRUE;
5848             }
5849           else
5850             {
5851               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5852               return FALSE;
5853             }
5854         }
5855     }
5856
5857   return FALSE;
5858 }
5859
5860 static gboolean
5861 gtk_tree_view_key_release (GtkWidget   *widget,
5862                            GdkEventKey *event)
5863 {
5864   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5865
5866   if (tree_view->priv->rubber_band_status)
5867     return TRUE;
5868
5869   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5870 }
5871
5872 /* FIXME Is this function necessary? Can I get an enter_notify event
5873  * w/o either an expose event or a mouse motion event?
5874  */
5875 static gboolean
5876 gtk_tree_view_enter_notify (GtkWidget        *widget,
5877                             GdkEventCrossing *event)
5878 {
5879   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5880   GtkRBTree *tree;
5881   GtkRBNode *node;
5882   gint new_y;
5883
5884   /* Sanity check it */
5885   if (event->window != tree_view->priv->bin_window)
5886     return FALSE;
5887
5888   if (tree_view->priv->tree == NULL)
5889     return FALSE;
5890
5891   if (event->mode == GDK_CROSSING_GRAB ||
5892       event->mode == GDK_CROSSING_GTK_GRAB ||
5893       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5894       event->mode == GDK_CROSSING_STATE_CHANGED)
5895     return TRUE;
5896
5897   /* find the node internally */
5898   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5899   if (new_y < 0)
5900     new_y = 0;
5901   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5902
5903   tree_view->priv->event_last_x = event->x;
5904   tree_view->priv->event_last_y = event->y;
5905
5906   if ((tree_view->priv->button_pressed_node == NULL) ||
5907       (tree_view->priv->button_pressed_node == node))
5908     prelight_or_select (tree_view, tree, node, event->x, event->y);
5909
5910   return TRUE;
5911 }
5912
5913 static gboolean
5914 gtk_tree_view_leave_notify (GtkWidget        *widget,
5915                             GdkEventCrossing *event)
5916 {
5917   GtkTreeView *tree_view;
5918
5919   if (event->mode == GDK_CROSSING_GRAB ||
5920       event->mode == GDK_CROSSING_GTK_GRAB ||
5921       event->mode == GDK_CROSSING_GTK_UNGRAB)
5922     return TRUE;
5923
5924   tree_view = GTK_TREE_VIEW (widget);
5925
5926   if (tree_view->priv->prelight_node)
5927     _gtk_tree_view_queue_draw_node (tree_view,
5928                                    tree_view->priv->prelight_tree,
5929                                    tree_view->priv->prelight_node,
5930                                    NULL);
5931
5932   tree_view->priv->event_last_x = -10000;
5933   tree_view->priv->event_last_y = -10000;
5934
5935   prelight_or_select (tree_view,
5936                       NULL, NULL,
5937                       -1000, -1000); /* coords not possibly over an arrow */
5938
5939   return TRUE;
5940 }
5941
5942
5943 static gint
5944 gtk_tree_view_focus_out (GtkWidget     *widget,
5945                          GdkEventFocus *event)
5946 {
5947   GtkTreeView *tree_view;
5948
5949   tree_view = GTK_TREE_VIEW (widget);
5950
5951   gtk_widget_queue_draw (widget);
5952
5953   /* destroy interactive search dialog */
5954   if (tree_view->priv->search_window)
5955     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5956                                       gdk_event_get_device ((GdkEvent *) event));
5957
5958   return FALSE;
5959 }
5960
5961
5962 /* Incremental Reflow
5963  */
5964
5965 static void
5966 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5967                                  GtkRBTree   *tree,
5968                                  GtkRBNode   *node)
5969 {
5970   GtkAllocation allocation;
5971   gint y;
5972
5973   y = _gtk_rbtree_node_find_offset (tree, node)
5974     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5975     + gtk_tree_view_get_effective_header_height (tree_view);
5976
5977   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5978   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5979                               0, y,
5980                               allocation.width,
5981                               GTK_RBNODE_GET_HEIGHT (node));
5982 }
5983
5984 static gboolean
5985 node_is_visible (GtkTreeView *tree_view,
5986                  GtkRBTree   *tree,
5987                  GtkRBNode   *node)
5988 {
5989   int y;
5990   int height;
5991
5992   y = _gtk_rbtree_node_find_offset (tree, node);
5993   height = gtk_tree_view_get_row_height (tree_view, node);
5994
5995   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
5996       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
5997                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
5998     return TRUE;
5999
6000   return FALSE;
6001 }
6002
6003 /* Returns TRUE if it updated the size
6004  */
6005 static gboolean
6006 validate_row (GtkTreeView *tree_view,
6007               GtkRBTree   *tree,
6008               GtkRBNode   *node,
6009               GtkTreeIter *iter,
6010               GtkTreePath *path)
6011 {
6012   GtkTreeViewColumn *column;
6013   GList *list, *first_column, *last_column;
6014   gint height = 0;
6015   gint horizontal_separator;
6016   gint vertical_separator;
6017   gint depth = gtk_tree_path_get_depth (path);
6018   gboolean retval = FALSE;
6019   gboolean is_separator = FALSE;
6020   gboolean draw_vgrid_lines, draw_hgrid_lines;
6021   gint focus_pad;
6022   gint grid_line_width;
6023   gboolean wide_separators;
6024   gint separator_height;
6025
6026   /* double check the row needs validating */
6027   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6028       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6029     return FALSE;
6030
6031   is_separator = row_is_separator (tree_view, iter, NULL);
6032
6033   gtk_widget_style_get (GTK_WIDGET (tree_view),
6034                         "focus-padding", &focus_pad,
6035                         "horizontal-separator", &horizontal_separator,
6036                         "vertical-separator", &vertical_separator,
6037                         "grid-line-width", &grid_line_width,
6038                         "wide-separators",  &wide_separators,
6039                         "separator-height", &separator_height,
6040                         NULL);
6041
6042   draw_vgrid_lines =
6043     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6044     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6045   draw_hgrid_lines =
6046     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6047     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6048
6049   for (last_column = g_list_last (tree_view->priv->columns);
6050        last_column &&
6051        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6052        last_column = last_column->prev)
6053     ;
6054
6055   for (first_column = g_list_first (tree_view->priv->columns);
6056        first_column &&
6057        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6058        first_column = first_column->next)
6059     ;
6060
6061   for (list = tree_view->priv->columns; list; list = list->next)
6062     {
6063       gint padding = 0;
6064       gint original_width;
6065       gint new_width;
6066       gint row_height;
6067
6068       column = list->data;
6069
6070       if (!gtk_tree_view_column_get_visible (column))
6071         continue;
6072
6073       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6074           !_gtk_tree_view_column_cell_get_dirty (column))
6075         continue;
6076
6077       original_width = _gtk_tree_view_column_get_requested_width (column);
6078
6079       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6080                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6081                                                node->children?TRUE:FALSE);
6082       gtk_tree_view_column_cell_get_size (column,
6083                                           NULL, NULL, NULL,
6084                                           NULL, &row_height);
6085
6086       if (!is_separator)
6087         {
6088           row_height += vertical_separator;
6089           height = MAX (height, row_height);
6090           height = MAX (height, tree_view->priv->expander_size);
6091         }
6092       else
6093         {
6094           if (wide_separators)
6095             height = separator_height + 2 * focus_pad;
6096           else
6097             height = 2 + 2 * focus_pad;
6098         }
6099
6100       if (gtk_tree_view_is_expander_column (tree_view, column))
6101         {
6102           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6103
6104           if (gtk_tree_view_draw_expanders (tree_view))
6105             padding += depth * tree_view->priv->expander_size;
6106         }
6107       else
6108         padding += horizontal_separator;
6109
6110       if (draw_vgrid_lines)
6111         {
6112           if (list->data == first_column || list->data == last_column)
6113             padding += grid_line_width / 2.0;
6114           else
6115             padding += grid_line_width;
6116         }
6117
6118       /* Update the padding for the column */
6119       _gtk_tree_view_column_push_padding (column, padding);
6120       new_width = _gtk_tree_view_column_get_requested_width (column);
6121
6122       if (new_width > original_width)
6123         retval = TRUE;
6124     }
6125
6126   if (draw_hgrid_lines)
6127     height += grid_line_width;
6128
6129   if (height != GTK_RBNODE_GET_HEIGHT (node))
6130     {
6131       retval = TRUE;
6132       _gtk_rbtree_node_set_height (tree, node, height);
6133     }
6134   _gtk_rbtree_node_mark_valid (tree, node);
6135   tree_view->priv->post_validation_flag = TRUE;
6136
6137   return retval;
6138 }
6139
6140
6141 static void
6142 validate_visible_area (GtkTreeView *tree_view)
6143 {
6144   GtkAllocation allocation;
6145   GtkTreePath *path = NULL;
6146   GtkTreePath *above_path = NULL;
6147   GtkTreeIter iter;
6148   GtkRBTree *tree = NULL;
6149   GtkRBNode *node = NULL;
6150   gboolean need_redraw = FALSE;
6151   gboolean size_changed = FALSE;
6152   gint total_height;
6153   gint area_above = 0;
6154   gint area_below = 0;
6155
6156   if (tree_view->priv->tree == NULL)
6157     return;
6158
6159   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6160       tree_view->priv->scroll_to_path == NULL)
6161     return;
6162
6163   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6164   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6165
6166   if (total_height == 0)
6167     return;
6168
6169   /* First, we check to see if we need to scroll anywhere
6170    */
6171   if (tree_view->priv->scroll_to_path)
6172     {
6173       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6174       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6175         {
6176           /* we are going to scroll, and will update dy */
6177           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6178           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6179               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6180             {
6181               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6182               if (validate_row (tree_view, tree, node, &iter, path))
6183                 size_changed = TRUE;
6184             }
6185
6186           if (tree_view->priv->scroll_to_use_align)
6187             {
6188               gint height = gtk_tree_view_get_row_height (tree_view, node);
6189               area_above = (total_height - height) *
6190                 tree_view->priv->scroll_to_row_align;
6191               area_below = total_height - area_above - height;
6192               area_above = MAX (area_above, 0);
6193               area_below = MAX (area_below, 0);
6194             }
6195           else
6196             {
6197               /* two cases:
6198                * 1) row not visible
6199                * 2) row visible
6200                */
6201               gint dy;
6202               gint height = gtk_tree_view_get_row_height (tree_view, node);
6203
6204               dy = _gtk_rbtree_node_find_offset (tree, node);
6205
6206               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6207                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6208                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6209                 {
6210                   /* row visible: keep the row at the same position */
6211                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6212                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6213                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6214                                - dy - height;
6215                 }
6216               else
6217                 {
6218                   /* row not visible */
6219                   if (dy >= 0
6220                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6221                     {
6222                       /* row at the beginning -- fixed */
6223                       area_above = dy;
6224                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6225                                    - area_above - height;
6226                     }
6227                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6228                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6229                     {
6230                       /* row at the end -- fixed */
6231                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6232                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6233                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6234                                    area_above - height;
6235
6236                       if (area_below < 0)
6237                         {
6238                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6239                           area_below = 0;
6240                         }
6241                     }
6242                   else
6243                     {
6244                       /* row somewhere in the middle, bring it to the top
6245                        * of the view
6246                        */
6247                       area_above = 0;
6248                       area_below = total_height - height;
6249                     }
6250                 }
6251             }
6252         }
6253       else
6254         /* the scroll to isn't valid; ignore it.
6255          */
6256         {
6257           if (tree_view->priv->scroll_to_path && !path)
6258             {
6259               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6260               tree_view->priv->scroll_to_path = NULL;
6261             }
6262           if (path)
6263             gtk_tree_path_free (path);
6264           path = NULL;
6265         }
6266     }
6267
6268   /* We didn't have a scroll_to set, so we just handle things normally
6269    */
6270   if (path == NULL)
6271     {
6272       gint offset;
6273
6274       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6275                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6276                                         &tree, &node);
6277       if (node == NULL)
6278         {
6279           /* In this case, nothing has been validated */
6280           path = gtk_tree_path_new_first ();
6281           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6282         }
6283       else
6284         {
6285           path = _gtk_tree_path_new_from_rbtree (tree, node);
6286           total_height += offset;
6287         }
6288
6289       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6290
6291       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6292           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6293         {
6294           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6295           if (validate_row (tree_view, tree, node, &iter, path))
6296             size_changed = TRUE;
6297         }
6298       area_above = 0;
6299       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6300     }
6301
6302   above_path = gtk_tree_path_copy (path);
6303
6304   /* if we do not validate any row above the new top_row, we will make sure
6305    * that the row immediately above top_row has been validated. (if we do not
6306    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6307    * when invalidated that row's height will be zero. and this will mess up
6308    * scrolling).
6309    */
6310   if (area_above == 0)
6311     {
6312       GtkRBTree *tmptree;
6313       GtkRBNode *tmpnode;
6314
6315       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6316       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6317
6318       if (tmpnode)
6319         {
6320           GtkTreePath *tmppath;
6321           GtkTreeIter tmpiter;
6322
6323           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6324           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6325
6326           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6327               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6328             {
6329               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6330               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6331                 size_changed = TRUE;
6332             }
6333
6334           gtk_tree_path_free (tmppath);
6335         }
6336     }
6337
6338   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6339    * backwards is much slower then forward, as there is no iter_prev function.
6340    * We go forwards first in case we run out of tree.  Then we go backwards to
6341    * fill out the top.
6342    */
6343   while (node && area_below > 0)
6344     {
6345       if (node->children)
6346         {
6347           GtkTreeIter parent = iter;
6348           gboolean has_child;
6349
6350           tree = node->children;
6351           node = _gtk_rbtree_first (tree);
6352
6353           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6354                                                     &iter,
6355                                                     &parent);
6356           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6357           gtk_tree_path_down (path);
6358         }
6359       else
6360         {
6361           gboolean done = FALSE;
6362           do
6363             {
6364               node = _gtk_rbtree_next (tree, node);
6365               if (node != NULL)
6366                 {
6367                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6368                   done = TRUE;
6369                   gtk_tree_path_next (path);
6370
6371                   /* Sanity Check! */
6372                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6373                 }
6374               else
6375                 {
6376                   GtkTreeIter parent_iter = iter;
6377                   gboolean has_parent;
6378
6379                   node = tree->parent_node;
6380                   tree = tree->parent_tree;
6381                   if (tree == NULL)
6382                     break;
6383                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6384                                                            &iter,
6385                                                            &parent_iter);
6386                   gtk_tree_path_up (path);
6387
6388                   /* Sanity check */
6389                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6390                 }
6391             }
6392           while (!done);
6393         }
6394
6395       if (!node)
6396         break;
6397
6398       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6399           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6400         {
6401           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6402           if (validate_row (tree_view, tree, node, &iter, path))
6403               size_changed = TRUE;
6404         }
6405
6406       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6407     }
6408   gtk_tree_path_free (path);
6409
6410   /* If we ran out of tree, and have extra area_below left, we need to add it
6411    * to area_above */
6412   if (area_below > 0)
6413     area_above += area_below;
6414
6415   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6416
6417   /* We walk backwards */
6418   while (area_above > 0)
6419     {
6420       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6421
6422       /* Always find the new path in the tree.  We cannot just assume
6423        * a gtk_tree_path_prev() is enough here, as there might be children
6424        * in between this node and the previous sibling node.  If this
6425        * appears to be a performance hotspot in profiles, we can look into
6426        * intrigate logic for keeping path, node and iter in sync like
6427        * we do for forward walks.  (Which will be hard because of the lacking
6428        * iter_prev).
6429        */
6430
6431       if (node == NULL)
6432         break;
6433
6434       gtk_tree_path_free (above_path);
6435       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6436
6437       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6438
6439       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6440           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6441         {
6442           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6443           if (validate_row (tree_view, tree, node, &iter, above_path))
6444             size_changed = TRUE;
6445         }
6446       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6447     }
6448
6449   /* if we scrolled to a path, we need to set the dy here,
6450    * and sync the top row accordingly
6451    */
6452   if (tree_view->priv->scroll_to_path)
6453     {
6454       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6455       gtk_tree_view_top_row_to_dy (tree_view);
6456
6457       need_redraw = TRUE;
6458     }
6459   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6460     {
6461       /* when we are not scrolling, we should never set dy to something
6462        * else than zero. we update top_row to be in sync with dy = 0.
6463        */
6464       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6465       gtk_tree_view_dy_to_top_row (tree_view);
6466     }
6467   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6468     {
6469       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6470       gtk_tree_view_dy_to_top_row (tree_view);
6471     }
6472   else
6473     gtk_tree_view_top_row_to_dy (tree_view);
6474
6475   /* update width/height and queue a resize */
6476   if (size_changed)
6477     {
6478       GtkRequisition requisition;
6479
6480       /* We temporarily guess a size, under the assumption that it will be the
6481        * same when we get our next size_allocate.  If we don't do this, we'll be
6482        * in an inconsistent state if we call top_row_to_dy. */
6483
6484       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6485                                      &requisition, NULL);
6486       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6487                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6488       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6489                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6490       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6491     }
6492
6493   if (tree_view->priv->scroll_to_path)
6494     {
6495       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6496       tree_view->priv->scroll_to_path = NULL;
6497     }
6498
6499   if (above_path)
6500     gtk_tree_path_free (above_path);
6501
6502   if (tree_view->priv->scroll_to_column)
6503     {
6504       tree_view->priv->scroll_to_column = NULL;
6505     }
6506   if (need_redraw)
6507     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6508 }
6509
6510 static void
6511 initialize_fixed_height_mode (GtkTreeView *tree_view)
6512 {
6513   if (!tree_view->priv->tree)
6514     return;
6515
6516   if (tree_view->priv->fixed_height < 0)
6517     {
6518       GtkTreeIter iter;
6519       GtkTreePath *path;
6520
6521       GtkRBTree *tree = NULL;
6522       GtkRBNode *node = NULL;
6523
6524       tree = tree_view->priv->tree;
6525       node = tree->root;
6526
6527       path = _gtk_tree_path_new_from_rbtree (tree, node);
6528       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6529
6530       validate_row (tree_view, tree, node, &iter, path);
6531
6532       gtk_tree_path_free (path);
6533
6534       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6535     }
6536
6537    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6538                                  tree_view->priv->fixed_height, TRUE);
6539 }
6540
6541 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6542  * the left-most uninvalidated node.  We then try walking right, validating
6543  * nodes.  Once we find a valid node, we repeat the previous process of finding
6544  * the first invalid node.
6545  */
6546
6547 static gboolean
6548 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6549 {
6550   GtkRBTree *tree = NULL;
6551   GtkRBNode *node = NULL;
6552   gboolean validated_area = FALSE;
6553   gint retval = TRUE;
6554   GtkTreePath *path = NULL;
6555   GtkTreeIter iter;
6556   GTimer *timer;
6557   gint i = 0;
6558
6559   gint y = -1;
6560   gint prev_height = -1;
6561   gboolean fixed_height = TRUE;
6562
6563   g_assert (tree_view);
6564
6565   if (tree_view->priv->tree == NULL)
6566       return FALSE;
6567
6568   if (tree_view->priv->fixed_height_mode)
6569     {
6570       if (tree_view->priv->fixed_height < 0)
6571         initialize_fixed_height_mode (tree_view);
6572
6573       return FALSE;
6574     }
6575
6576   timer = g_timer_new ();
6577   g_timer_start (timer);
6578
6579   do
6580     {
6581       gboolean changed = FALSE;
6582
6583       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6584         {
6585           retval = FALSE;
6586           goto done;
6587         }
6588
6589       if (path != NULL)
6590         {
6591           node = _gtk_rbtree_next (tree, node);
6592           if (node != NULL)
6593             {
6594               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6595               gtk_tree_path_next (path);
6596             }
6597           else
6598             {
6599               gtk_tree_path_free (path);
6600               path = NULL;
6601             }
6602         }
6603
6604       if (path == NULL)
6605         {
6606           tree = tree_view->priv->tree;
6607           node = tree_view->priv->tree->root;
6608
6609           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6610
6611           do
6612             {
6613               if (!_gtk_rbtree_is_nil (node->left) &&
6614                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6615                 {
6616                   node = node->left;
6617                 }
6618               else if (!_gtk_rbtree_is_nil (node->right) &&
6619                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6620                 {
6621                   node = node->right;
6622                 }
6623               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6624                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6625                 {
6626                   break;
6627                 }
6628               else if (node->children != NULL)
6629                 {
6630                   tree = node->children;
6631                   node = tree->root;
6632                 }
6633               else
6634                 /* RBTree corruption!  All bad */
6635                 g_assert_not_reached ();
6636             }
6637           while (TRUE);
6638           path = _gtk_tree_path_new_from_rbtree (tree, node);
6639           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6640         }
6641
6642       changed = validate_row (tree_view, tree, node, &iter, path);
6643       validated_area = changed || validated_area;
6644
6645       if (changed)
6646         {
6647           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6648
6649           if (y == -1 || y > offset)
6650             y = offset;
6651         }
6652
6653       if (!tree_view->priv->fixed_height_check)
6654         {
6655           gint height;
6656
6657           height = gtk_tree_view_get_row_height (tree_view, node);
6658           if (prev_height < 0)
6659             prev_height = height;
6660           else if (prev_height != height)
6661             fixed_height = FALSE;
6662         }
6663
6664       i++;
6665     }
6666   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6667
6668   if (!tree_view->priv->fixed_height_check)
6669    {
6670      if (fixed_height)
6671        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6672
6673      tree_view->priv->fixed_height_check = 1;
6674    }
6675
6676  done:
6677   if (validated_area)
6678     {
6679       GtkRequisition requisition;
6680
6681       /* We temporarily guess a size, under the assumption that it will be the
6682        * same when we get our next size_allocate.  If we don't do this, we'll be
6683        * in an inconsistent state when we call top_row_to_dy. */
6684
6685       /* FIXME: This is called from size_request, for some reason it is not infinitely
6686        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6687        * not allowed (from inside ->get_preferred_width/height() implementations, one
6688        * should call the vfuncs directly). However what is desired here is the full
6689        * size including any margins and limited by any alignment (i.e. after
6690        * GtkWidget:adjust_size_request() is called).
6691        *
6692        * Currently bypassing this but the real solution is to not update the scroll adjustments
6693        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6694        */
6695       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6696
6697       /* If rows above the current position have changed height, this has
6698        * affected the current view and thus needs a redraw.
6699        */
6700       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6701         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6702
6703       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6704                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6705       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6706                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6707
6708       if (queue_resize)
6709         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6710     }
6711
6712   if (path) gtk_tree_path_free (path);
6713   g_timer_destroy (timer);
6714
6715   return retval;
6716 }
6717
6718 static gboolean
6719 validate_rows (GtkTreeView *tree_view)
6720 {
6721   gboolean retval;
6722
6723   retval = do_validate_rows (tree_view, TRUE);
6724
6725   if (! retval && tree_view->priv->validate_rows_timer)
6726     {
6727       g_source_remove (tree_view->priv->validate_rows_timer);
6728       tree_view->priv->validate_rows_timer = 0;
6729     }
6730
6731   return retval;
6732 }
6733
6734 static gboolean
6735 validate_rows_handler (GtkTreeView *tree_view)
6736 {
6737   gboolean retval;
6738
6739   retval = do_validate_rows (tree_view, TRUE);
6740   if (! retval && tree_view->priv->validate_rows_timer)
6741     {
6742       g_source_remove (tree_view->priv->validate_rows_timer);
6743       tree_view->priv->validate_rows_timer = 0;
6744     }
6745
6746   return retval;
6747 }
6748
6749 static gboolean
6750 do_presize_handler (GtkTreeView *tree_view)
6751 {
6752   if (tree_view->priv->mark_rows_col_dirty)
6753     {
6754       if (tree_view->priv->tree)
6755         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6756       tree_view->priv->mark_rows_col_dirty = FALSE;
6757     }
6758   validate_visible_area (tree_view);
6759   tree_view->priv->presize_handler_timer = 0;
6760
6761   if (tree_view->priv->fixed_height_mode)
6762     {
6763       GtkRequisition requisition;
6764
6765       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6766                                      &requisition, NULL);
6767
6768       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6769                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6770       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6771                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6772       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6773     }
6774
6775   return FALSE;
6776 }
6777
6778 static gboolean
6779 presize_handler_callback (gpointer data)
6780 {
6781   do_presize_handler (GTK_TREE_VIEW (data));
6782
6783   return FALSE;
6784 }
6785
6786 static void
6787 install_presize_handler (GtkTreeView *tree_view)
6788 {
6789   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6790     return;
6791
6792   if (! tree_view->priv->presize_handler_timer)
6793     {
6794       tree_view->priv->presize_handler_timer =
6795         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6796     }
6797   if (! tree_view->priv->validate_rows_timer)
6798     {
6799       tree_view->priv->validate_rows_timer =
6800         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6801     }
6802 }
6803
6804 static void
6805 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6806 {
6807   /* Prior to drawing, we make sure the visible area is validated. */
6808   if (tree_view->priv->presize_handler_timer)
6809     {
6810       g_source_remove (tree_view->priv->presize_handler_timer);
6811       tree_view->priv->presize_handler_timer = 0;
6812
6813       do_presize_handler (tree_view);
6814     }
6815
6816   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6817 }
6818
6819 static gboolean
6820 scroll_sync_handler (GtkTreeView *tree_view)
6821 {
6822   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6823     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6824   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6825     gtk_tree_view_top_row_to_dy (tree_view);
6826   else
6827     gtk_tree_view_dy_to_top_row (tree_view);
6828
6829   tree_view->priv->scroll_sync_timer = 0;
6830
6831   return FALSE;
6832 }
6833
6834 static void
6835 install_scroll_sync_handler (GtkTreeView *tree_view)
6836 {
6837   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6838     return;
6839
6840   if (!tree_view->priv->scroll_sync_timer)
6841     {
6842       tree_view->priv->scroll_sync_timer =
6843         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6844     }
6845 }
6846
6847 static void
6848 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6849                            GtkTreePath *path,
6850                            gint         offset)
6851 {
6852   gtk_tree_row_reference_free (tree_view->priv->top_row);
6853
6854   if (!path)
6855     {
6856       tree_view->priv->top_row = NULL;
6857       tree_view->priv->top_row_dy = 0;
6858     }
6859   else
6860     {
6861       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6862       tree_view->priv->top_row_dy = offset;
6863     }
6864 }
6865
6866 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6867  * it's set to be NULL, and top_row_dy is 0;
6868  */
6869 static void
6870 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6871 {
6872   gint offset;
6873   GtkTreePath *path;
6874   GtkRBTree *tree;
6875   GtkRBNode *node;
6876
6877   if (tree_view->priv->tree == NULL)
6878     {
6879       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6880     }
6881   else
6882     {
6883       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6884                                         tree_view->priv->dy,
6885                                         &tree, &node);
6886
6887       if (tree == NULL)
6888         {
6889           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6890         }
6891       else
6892         {
6893           path = _gtk_tree_path_new_from_rbtree (tree, node);
6894           gtk_tree_view_set_top_row (tree_view, path, offset);
6895           gtk_tree_path_free (path);
6896         }
6897     }
6898 }
6899
6900 static void
6901 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6902 {
6903   GtkTreePath *path;
6904   GtkRBTree *tree;
6905   GtkRBNode *node;
6906   int new_dy;
6907
6908   /* Avoid recursive calls */
6909   if (tree_view->priv->in_top_row_to_dy)
6910     return;
6911
6912   if (tree_view->priv->top_row)
6913     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6914   else
6915     path = NULL;
6916
6917   if (!path)
6918     tree = NULL;
6919   else
6920     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6921
6922   if (path)
6923     gtk_tree_path_free (path);
6924
6925   if (tree == NULL)
6926     {
6927       /* keep dy and set new toprow */
6928       gtk_tree_row_reference_free (tree_view->priv->top_row);
6929       tree_view->priv->top_row = NULL;
6930       tree_view->priv->top_row_dy = 0;
6931       /* DO NOT install the idle handler */
6932       gtk_tree_view_dy_to_top_row (tree_view);
6933       return;
6934     }
6935
6936   if (gtk_tree_view_get_row_height (tree_view, node)
6937       < tree_view->priv->top_row_dy)
6938     {
6939       /* new top row -- do NOT install the idle handler */
6940       gtk_tree_view_dy_to_top_row (tree_view);
6941       return;
6942     }
6943
6944   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6945   new_dy += tree_view->priv->top_row_dy;
6946
6947   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6948     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6949
6950   new_dy = MAX (0, new_dy);
6951
6952   tree_view->priv->in_top_row_to_dy = TRUE;
6953   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6954   tree_view->priv->in_top_row_to_dy = FALSE;
6955 }
6956
6957
6958 void
6959 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6960                                             gboolean     install_handler)
6961 {
6962   tree_view->priv->mark_rows_col_dirty = TRUE;
6963
6964   if (install_handler)
6965     install_presize_handler (tree_view);
6966 }
6967
6968 /*
6969  * This function works synchronously (due to the while (validate_rows...)
6970  * loop).
6971  *
6972  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6973  * here. You now need to check that yourself.
6974  */
6975 void
6976 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6977                                 GtkTreeViewColumn *column)
6978 {
6979   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6980   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6981
6982   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6983
6984   do_presize_handler (tree_view);
6985   while (validate_rows (tree_view));
6986
6987   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6988 }
6989
6990 /* Drag-and-drop */
6991
6992 static void
6993 set_source_row (GdkDragContext *context,
6994                 GtkTreeModel   *model,
6995                 GtkTreePath    *source_row)
6996 {
6997   g_object_set_data_full (G_OBJECT (context),
6998                           I_("gtk-tree-view-source-row"),
6999                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7000                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7001 }
7002
7003 static GtkTreePath*
7004 get_source_row (GdkDragContext *context)
7005 {
7006   GtkTreeRowReference *ref =
7007     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7008
7009   if (ref)
7010     return gtk_tree_row_reference_get_path (ref);
7011   else
7012     return NULL;
7013 }
7014
7015 typedef struct
7016 {
7017   GtkTreeRowReference *dest_row;
7018   guint                path_down_mode   : 1;
7019   guint                empty_view_drop  : 1;
7020   guint                drop_append_mode : 1;
7021 }
7022 DestRow;
7023
7024 static void
7025 dest_row_free (gpointer data)
7026 {
7027   DestRow *dr = (DestRow *)data;
7028
7029   gtk_tree_row_reference_free (dr->dest_row);
7030   g_slice_free (DestRow, dr);
7031 }
7032
7033 static void
7034 set_dest_row (GdkDragContext *context,
7035               GtkTreeModel   *model,
7036               GtkTreePath    *dest_row,
7037               gboolean        path_down_mode,
7038               gboolean        empty_view_drop,
7039               gboolean        drop_append_mode)
7040 {
7041   DestRow *dr;
7042
7043   if (!dest_row)
7044     {
7045       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7046                               NULL, NULL);
7047       return;
7048     }
7049
7050   dr = g_slice_new (DestRow);
7051
7052   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7053   dr->path_down_mode = path_down_mode != FALSE;
7054   dr->empty_view_drop = empty_view_drop != FALSE;
7055   dr->drop_append_mode = drop_append_mode != FALSE;
7056
7057   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7058                           dr, (GDestroyNotify) dest_row_free);
7059 }
7060
7061 static GtkTreePath*
7062 get_dest_row (GdkDragContext *context,
7063               gboolean       *path_down_mode)
7064 {
7065   DestRow *dr =
7066     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7067
7068   if (dr)
7069     {
7070       GtkTreePath *path = NULL;
7071
7072       if (path_down_mode)
7073         *path_down_mode = dr->path_down_mode;
7074
7075       if (dr->dest_row)
7076         path = gtk_tree_row_reference_get_path (dr->dest_row);
7077       else if (dr->empty_view_drop)
7078         path = gtk_tree_path_new_from_indices (0, -1);
7079       else
7080         path = NULL;
7081
7082       if (path && dr->drop_append_mode)
7083         gtk_tree_path_next (path);
7084
7085       return path;
7086     }
7087   else
7088     return NULL;
7089 }
7090
7091 /* Get/set whether drag_motion requested the drag data and
7092  * drag_data_received should thus not actually insert the data,
7093  * since the data doesn't result from a drop.
7094  */
7095 static void
7096 set_status_pending (GdkDragContext *context,
7097                     GdkDragAction   suggested_action)
7098 {
7099   g_object_set_data (G_OBJECT (context),
7100                      I_("gtk-tree-view-status-pending"),
7101                      GINT_TO_POINTER (suggested_action));
7102 }
7103
7104 static GdkDragAction
7105 get_status_pending (GdkDragContext *context)
7106 {
7107   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7108                                              "gtk-tree-view-status-pending"));
7109 }
7110
7111 static TreeViewDragInfo*
7112 get_info (GtkTreeView *tree_view)
7113 {
7114   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7115 }
7116
7117 static void
7118 destroy_info (TreeViewDragInfo *di)
7119 {
7120   g_slice_free (TreeViewDragInfo, di);
7121 }
7122
7123 static TreeViewDragInfo*
7124 ensure_info (GtkTreeView *tree_view)
7125 {
7126   TreeViewDragInfo *di;
7127
7128   di = get_info (tree_view);
7129
7130   if (di == NULL)
7131     {
7132       di = g_slice_new0 (TreeViewDragInfo);
7133
7134       g_object_set_data_full (G_OBJECT (tree_view),
7135                               I_("gtk-tree-view-drag-info"),
7136                               di,
7137                               (GDestroyNotify) destroy_info);
7138     }
7139
7140   return di;
7141 }
7142
7143 static void
7144 remove_info (GtkTreeView *tree_view)
7145 {
7146   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7147 }
7148
7149 #if 0
7150 static gint
7151 drag_scan_timeout (gpointer data)
7152 {
7153   GtkTreeView *tree_view;
7154   gint x, y;
7155   GdkModifierType state;
7156   GtkTreePath *path = NULL;
7157   GtkTreeViewColumn *column = NULL;
7158   GdkRectangle visible_rect;
7159
7160   GDK_THREADS_ENTER ();
7161
7162   tree_view = GTK_TREE_VIEW (data);
7163
7164   gdk_window_get_device_position (tree_view->priv->bin_window,
7165                                   gdk_device_manager_get_client_pointer (
7166                                     gdk_display_get_device_manager (
7167                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7168                                   &x, &y, &state);
7169
7170   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7171
7172   /* See if we are near the edge. */
7173   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7174       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7175       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7176       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7177     {
7178       gtk_tree_view_get_path_at_pos (tree_view,
7179                                      tree_view->priv->bin_window,
7180                                      x, y,
7181                                      &path,
7182                                      &column,
7183                                      NULL,
7184                                      NULL);
7185
7186       if (path != NULL)
7187         {
7188           gtk_tree_view_scroll_to_cell (tree_view,
7189                                         path,
7190                                         column,
7191                                         TRUE,
7192                                         0.5, 0.5);
7193
7194           gtk_tree_path_free (path);
7195         }
7196     }
7197
7198   GDK_THREADS_LEAVE ();
7199
7200   return TRUE;
7201 }
7202 #endif /* 0 */
7203
7204 static void
7205 add_scroll_timeout (GtkTreeView *tree_view)
7206 {
7207   if (tree_view->priv->scroll_timeout == 0)
7208     {
7209       tree_view->priv->scroll_timeout =
7210         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7211     }
7212 }
7213
7214 static void
7215 remove_scroll_timeout (GtkTreeView *tree_view)
7216 {
7217   if (tree_view->priv->scroll_timeout != 0)
7218     {
7219       g_source_remove (tree_view->priv->scroll_timeout);
7220       tree_view->priv->scroll_timeout = 0;
7221     }
7222 }
7223
7224 static gboolean
7225 check_model_dnd (GtkTreeModel *model,
7226                  GType         required_iface,
7227                  const gchar  *signal)
7228 {
7229   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7230     {
7231       g_warning ("You must override the default '%s' handler "
7232                  "on GtkTreeView when using models that don't support "
7233                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7234                  "is to connect to '%s' and call "
7235                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7236                  "the default handler from running. Look at the source code "
7237                  "for the default handler in gtktreeview.c to get an idea what "
7238                  "your handler should do. (gtktreeview.c is in the GTK source "
7239                  "code.) If you're using GTK from a language other than C, "
7240                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7241                  signal, g_type_name (required_iface), signal);
7242       return FALSE;
7243     }
7244   else
7245     return TRUE;
7246 }
7247
7248 static void
7249 remove_open_timeout (GtkTreeView *tree_view)
7250 {
7251   if (tree_view->priv->open_dest_timeout != 0)
7252     {
7253       g_source_remove (tree_view->priv->open_dest_timeout);
7254       tree_view->priv->open_dest_timeout = 0;
7255     }
7256 }
7257
7258
7259 static gint
7260 open_row_timeout (gpointer data)
7261 {
7262   GtkTreeView *tree_view = data;
7263   GtkTreePath *dest_path = NULL;
7264   GtkTreeViewDropPosition pos;
7265   gboolean result = FALSE;
7266
7267   gtk_tree_view_get_drag_dest_row (tree_view,
7268                                    &dest_path,
7269                                    &pos);
7270
7271   if (dest_path &&
7272       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7273        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7274     {
7275       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7276       tree_view->priv->open_dest_timeout = 0;
7277
7278       gtk_tree_path_free (dest_path);
7279     }
7280   else
7281     {
7282       if (dest_path)
7283         gtk_tree_path_free (dest_path);
7284
7285       result = TRUE;
7286     }
7287
7288   return result;
7289 }
7290
7291 static gboolean
7292 scroll_row_timeout (gpointer data)
7293 {
7294   GtkTreeView *tree_view = data;
7295
7296   gtk_tree_view_vertical_autoscroll (tree_view);
7297
7298   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7299     gtk_tree_view_update_rubber_band (tree_view);
7300
7301   return TRUE;
7302 }
7303
7304 /* Returns TRUE if event should not be propagated to parent widgets */
7305 static gboolean
7306 set_destination_row (GtkTreeView    *tree_view,
7307                      GdkDragContext *context,
7308                      /* coordinates relative to the widget */
7309                      gint            x,
7310                      gint            y,
7311                      GdkDragAction  *suggested_action,
7312                      GdkAtom        *target)
7313 {
7314   GtkTreePath *path = NULL;
7315   GtkTreeViewDropPosition pos;
7316   GtkTreeViewDropPosition old_pos;
7317   TreeViewDragInfo *di;
7318   GtkWidget *widget;
7319   GtkTreePath *old_dest_path = NULL;
7320   gboolean can_drop = FALSE;
7321
7322   *suggested_action = 0;
7323   *target = GDK_NONE;
7324
7325   widget = GTK_WIDGET (tree_view);
7326
7327   di = get_info (tree_view);
7328
7329   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7330     {
7331       /* someone unset us as a drag dest, note that if
7332        * we return FALSE drag_leave isn't called
7333        */
7334
7335       gtk_tree_view_set_drag_dest_row (tree_view,
7336                                        NULL,
7337                                        GTK_TREE_VIEW_DROP_BEFORE);
7338
7339       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7340       remove_open_timeout (GTK_TREE_VIEW (widget));
7341
7342       return FALSE; /* no longer a drop site */
7343     }
7344
7345   *target = gtk_drag_dest_find_target (widget, context,
7346                                        gtk_drag_dest_get_target_list (widget));
7347   if (*target == GDK_NONE)
7348     {
7349       return FALSE;
7350     }
7351
7352   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7353                                           x, y,
7354                                           &path,
7355                                           &pos))
7356     {
7357       gint n_children;
7358       GtkTreeModel *model;
7359
7360       remove_open_timeout (tree_view);
7361
7362       /* the row got dropped on empty space, let's setup a special case
7363        */
7364
7365       if (path)
7366         gtk_tree_path_free (path);
7367
7368       model = gtk_tree_view_get_model (tree_view);
7369
7370       n_children = gtk_tree_model_iter_n_children (model, NULL);
7371       if (n_children)
7372         {
7373           pos = GTK_TREE_VIEW_DROP_AFTER;
7374           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7375         }
7376       else
7377         {
7378           pos = GTK_TREE_VIEW_DROP_BEFORE;
7379           path = gtk_tree_path_new_from_indices (0, -1);
7380         }
7381
7382       can_drop = TRUE;
7383
7384       goto out;
7385     }
7386
7387   g_assert (path);
7388
7389   /* If we left the current row's "open" zone, unset the timeout for
7390    * opening the row
7391    */
7392   gtk_tree_view_get_drag_dest_row (tree_view,
7393                                    &old_dest_path,
7394                                    &old_pos);
7395
7396   if (old_dest_path &&
7397       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7398        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7399          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7400     remove_open_timeout (tree_view);
7401
7402   if (old_dest_path)
7403     gtk_tree_path_free (old_dest_path);
7404
7405   if (TRUE /* FIXME if the location droppable predicate */)
7406     {
7407       can_drop = TRUE;
7408     }
7409
7410 out:
7411   if (can_drop)
7412     {
7413       GtkWidget *source_widget;
7414
7415       *suggested_action = gdk_drag_context_get_suggested_action (context);
7416       source_widget = gtk_drag_get_source_widget (context);
7417
7418       if (source_widget == widget)
7419         {
7420           /* Default to MOVE, unless the user has
7421            * pressed ctrl or shift to affect available actions
7422            */
7423           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7424             *suggested_action = GDK_ACTION_MOVE;
7425         }
7426
7427       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7428                                        path, pos);
7429     }
7430   else
7431     {
7432       /* can't drop here */
7433       remove_open_timeout (tree_view);
7434
7435       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7436                                        NULL,
7437                                        GTK_TREE_VIEW_DROP_BEFORE);
7438     }
7439
7440   if (path)
7441     gtk_tree_path_free (path);
7442
7443   return TRUE;
7444 }
7445
7446 static GtkTreePath*
7447 get_logical_dest_row (GtkTreeView *tree_view,
7448                       gboolean    *path_down_mode,
7449                       gboolean    *drop_append_mode)
7450 {
7451   /* adjust path to point to the row the drop goes in front of */
7452   GtkTreePath *path = NULL;
7453   GtkTreeViewDropPosition pos;
7454
7455   g_return_val_if_fail (path_down_mode != NULL, NULL);
7456   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7457
7458   *path_down_mode = FALSE;
7459   *drop_append_mode = 0;
7460
7461   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7462
7463   if (path == NULL)
7464     return NULL;
7465
7466   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7467     ; /* do nothing */
7468   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7469            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7470     *path_down_mode = TRUE;
7471   else
7472     {
7473       GtkTreeIter iter;
7474       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7475
7476       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7477
7478       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7479           !gtk_tree_model_iter_next (model, &iter))
7480         *drop_append_mode = 1;
7481       else
7482         {
7483           *drop_append_mode = 0;
7484           gtk_tree_path_next (path);
7485         }
7486     }
7487
7488   return path;
7489 }
7490
7491 static gboolean
7492 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7493                                         GdkEventMotion   *event)
7494 {
7495   GtkWidget *widget = GTK_WIDGET (tree_view);
7496   GdkDragContext *context;
7497   TreeViewDragInfo *di;
7498   GtkTreePath *path = NULL;
7499   gint button;
7500   gint cell_x, cell_y;
7501   GtkTreeModel *model;
7502   gboolean retval = FALSE;
7503
7504   di = get_info (tree_view);
7505
7506   if (di == NULL || !di->source_set)
7507     goto out;
7508
7509   if (tree_view->priv->pressed_button < 0)
7510     goto out;
7511
7512   if (!gtk_drag_check_threshold (widget,
7513                                  tree_view->priv->press_start_x,
7514                                  tree_view->priv->press_start_y,
7515                                  event->x, event->y))
7516     goto out;
7517
7518   model = gtk_tree_view_get_model (tree_view);
7519
7520   if (model == NULL)
7521     goto out;
7522
7523   button = tree_view->priv->pressed_button;
7524   tree_view->priv->pressed_button = -1;
7525
7526   gtk_tree_view_get_path_at_pos (tree_view,
7527                                  tree_view->priv->press_start_x,
7528                                  tree_view->priv->press_start_y,
7529                                  &path,
7530                                  NULL,
7531                                  &cell_x,
7532                                  &cell_y);
7533
7534   if (path == NULL)
7535     goto out;
7536
7537   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7538       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7539                                            path))
7540     goto out;
7541
7542   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7543     goto out;
7544
7545   /* Now we can begin the drag */
7546
7547   retval = TRUE;
7548
7549   context = gtk_drag_begin (widget,
7550                             gtk_drag_source_get_target_list (widget),
7551                             di->source_actions,
7552                             button,
7553                             (GdkEvent*)event);
7554
7555   set_source_row (context, model, path);
7556
7557  out:
7558   if (path)
7559     gtk_tree_path_free (path);
7560
7561   return retval;
7562 }
7563
7564
7565 static void
7566 gtk_tree_view_drag_begin (GtkWidget      *widget,
7567                           GdkDragContext *context)
7568 {
7569   GtkTreeView *tree_view;
7570   GtkTreePath *path = NULL;
7571   gint cell_x, cell_y;
7572   cairo_surface_t *row_pix;
7573   TreeViewDragInfo *di;
7574
7575   tree_view = GTK_TREE_VIEW (widget);
7576
7577   /* if the user uses a custom DND source impl, we don't set the icon here */
7578   di = get_info (tree_view);
7579
7580   if (di == NULL || !di->source_set)
7581     return;
7582
7583   gtk_tree_view_get_path_at_pos (tree_view,
7584                                  tree_view->priv->press_start_x,
7585                                  tree_view->priv->press_start_y,
7586                                  &path,
7587                                  NULL,
7588                                  &cell_x,
7589                                  &cell_y);
7590
7591   /* If path is NULL, there's nothing we can drag.  For now, we silently
7592    * bail out.  Actually, dragging should not be possible from an empty
7593    * tree view, but there's no way we can cancel that from here.
7594    * Automatically unsetting the tree view as drag source for empty models
7595    * is something that would likely break other people's code ...
7596    */
7597   if (!path)
7598     return;
7599
7600   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7601                                                 path);
7602   cairo_surface_set_device_offset (row_pix,
7603                                    /* the + 1 is for the black border in the icon */
7604                                    - (tree_view->priv->press_start_x + 1),
7605                                    - (cell_y + 1));
7606
7607   gtk_drag_set_icon_surface (context, row_pix);
7608
7609   cairo_surface_destroy (row_pix);
7610   gtk_tree_path_free (path);
7611 }
7612
7613 static void
7614 gtk_tree_view_drag_end (GtkWidget      *widget,
7615                         GdkDragContext *context)
7616 {
7617   /* do nothing */
7618 }
7619
7620 /* Default signal implementations for the drag signals */
7621 static void
7622 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7623                              GdkDragContext   *context,
7624                              GtkSelectionData *selection_data,
7625                              guint             info,
7626                              guint             time)
7627 {
7628   GtkTreeView *tree_view;
7629   GtkTreeModel *model;
7630   TreeViewDragInfo *di;
7631   GtkTreePath *source_row;
7632
7633   tree_view = GTK_TREE_VIEW (widget);
7634
7635   model = gtk_tree_view_get_model (tree_view);
7636
7637   if (model == NULL)
7638     return;
7639
7640   di = get_info (GTK_TREE_VIEW (widget));
7641
7642   if (di == NULL)
7643     return;
7644
7645   source_row = get_source_row (context);
7646
7647   if (source_row == NULL)
7648     return;
7649
7650   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7651    * any model; for DragSource models there are some other targets
7652    * we also support.
7653    */
7654
7655   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7656       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7657                                           source_row,
7658                                           selection_data))
7659     goto done;
7660
7661   /* If drag_data_get does nothing, try providing row data. */
7662   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7663     {
7664       gtk_tree_set_row_drag_data (selection_data,
7665                                   model,
7666                                   source_row);
7667     }
7668
7669  done:
7670   gtk_tree_path_free (source_row);
7671 }
7672
7673
7674 static void
7675 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7676                                 GdkDragContext *context)
7677 {
7678   TreeViewDragInfo *di;
7679   GtkTreeModel *model;
7680   GtkTreeView *tree_view;
7681   GtkTreePath *source_row;
7682
7683   tree_view = GTK_TREE_VIEW (widget);
7684   model = gtk_tree_view_get_model (tree_view);
7685
7686   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7687     return;
7688
7689   di = get_info (tree_view);
7690
7691   if (di == NULL)
7692     return;
7693
7694   source_row = get_source_row (context);
7695
7696   if (source_row == NULL)
7697     return;
7698
7699   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7700                                          source_row);
7701
7702   gtk_tree_path_free (source_row);
7703
7704   set_source_row (context, NULL, NULL);
7705 }
7706
7707 static void
7708 gtk_tree_view_drag_leave (GtkWidget      *widget,
7709                           GdkDragContext *context,
7710                           guint             time)
7711 {
7712   /* unset any highlight row */
7713   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7714                                    NULL,
7715                                    GTK_TREE_VIEW_DROP_BEFORE);
7716
7717   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7718   remove_open_timeout (GTK_TREE_VIEW (widget));
7719 }
7720
7721
7722 static gboolean
7723 gtk_tree_view_drag_motion (GtkWidget        *widget,
7724                            GdkDragContext   *context,
7725                            /* coordinates relative to the widget */
7726                            gint              x,
7727                            gint              y,
7728                            guint             time)
7729 {
7730   gboolean empty;
7731   GtkTreePath *path = NULL;
7732   GtkTreeViewDropPosition pos;
7733   GtkTreeView *tree_view;
7734   GdkDragAction suggested_action = 0;
7735   GdkAtom target;
7736
7737   tree_view = GTK_TREE_VIEW (widget);
7738
7739   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7740     return FALSE;
7741
7742   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7743
7744   /* we only know this *after* set_desination_row */
7745   empty = tree_view->priv->empty_view_drop;
7746
7747   if (path == NULL && !empty)
7748     {
7749       /* Can't drop here. */
7750       gdk_drag_status (context, 0, time);
7751     }
7752   else
7753     {
7754       if (tree_view->priv->open_dest_timeout == 0 &&
7755           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7756            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7757         {
7758           tree_view->priv->open_dest_timeout =
7759             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7760         }
7761       else
7762         {
7763           add_scroll_timeout (tree_view);
7764         }
7765
7766       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7767         {
7768           /* Request data so we can use the source row when
7769            * determining whether to accept the drop
7770            */
7771           set_status_pending (context, suggested_action);
7772           gtk_drag_get_data (widget, context, target, time);
7773         }
7774       else
7775         {
7776           set_status_pending (context, 0);
7777           gdk_drag_status (context, suggested_action, time);
7778         }
7779     }
7780
7781   if (path)
7782     gtk_tree_path_free (path);
7783
7784   return TRUE;
7785 }
7786
7787
7788 static gboolean
7789 gtk_tree_view_drag_drop (GtkWidget        *widget,
7790                          GdkDragContext   *context,
7791                          /* coordinates relative to the widget */
7792                          gint              x,
7793                          gint              y,
7794                          guint             time)
7795 {
7796   GtkTreeView *tree_view;
7797   GtkTreePath *path;
7798   GdkDragAction suggested_action = 0;
7799   GdkAtom target = GDK_NONE;
7800   TreeViewDragInfo *di;
7801   GtkTreeModel *model;
7802   gboolean path_down_mode;
7803   gboolean drop_append_mode;
7804
7805   tree_view = GTK_TREE_VIEW (widget);
7806
7807   model = gtk_tree_view_get_model (tree_view);
7808
7809   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7810   remove_open_timeout (GTK_TREE_VIEW (widget));
7811
7812   di = get_info (tree_view);
7813
7814   if (di == NULL)
7815     return FALSE;
7816
7817   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7818     return FALSE;
7819
7820   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7821     return FALSE;
7822
7823   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7824
7825   if (target != GDK_NONE && path != NULL)
7826     {
7827       /* in case a motion had requested drag data, change things so we
7828        * treat drag data receives as a drop.
7829        */
7830       set_status_pending (context, 0);
7831       set_dest_row (context, model, path,
7832                     path_down_mode, tree_view->priv->empty_view_drop,
7833                     drop_append_mode);
7834     }
7835
7836   if (path)
7837     gtk_tree_path_free (path);
7838
7839   /* Unset this thing */
7840   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7841                                    NULL,
7842                                    GTK_TREE_VIEW_DROP_BEFORE);
7843
7844   if (target != GDK_NONE)
7845     {
7846       gtk_drag_get_data (widget, context, target, time);
7847       return TRUE;
7848     }
7849   else
7850     return FALSE;
7851 }
7852
7853 static void
7854 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7855                                   GdkDragContext   *context,
7856                                   /* coordinates relative to the widget */
7857                                   gint              x,
7858                                   gint              y,
7859                                   GtkSelectionData *selection_data,
7860                                   guint             info,
7861                                   guint             time)
7862 {
7863   GtkTreePath *path;
7864   TreeViewDragInfo *di;
7865   gboolean accepted = FALSE;
7866   GtkTreeModel *model;
7867   GtkTreeView *tree_view;
7868   GtkTreePath *dest_row;
7869   GdkDragAction suggested_action;
7870   gboolean path_down_mode;
7871   gboolean drop_append_mode;
7872
7873   tree_view = GTK_TREE_VIEW (widget);
7874
7875   model = gtk_tree_view_get_model (tree_view);
7876
7877   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7878     return;
7879
7880   di = get_info (tree_view);
7881
7882   if (di == NULL)
7883     return;
7884
7885   suggested_action = get_status_pending (context);
7886
7887   if (suggested_action)
7888     {
7889       /* We are getting this data due to a request in drag_motion,
7890        * rather than due to a request in drag_drop, so we are just
7891        * supposed to call drag_status, not actually paste in the
7892        * data.
7893        */
7894       path = get_logical_dest_row (tree_view, &path_down_mode,
7895                                    &drop_append_mode);
7896
7897       if (path == NULL)
7898         suggested_action = 0;
7899       else if (path_down_mode)
7900         gtk_tree_path_down (path);
7901
7902       if (suggested_action)
7903         {
7904           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7905                                                      path,
7906                                                      selection_data))
7907             {
7908               if (path_down_mode)
7909                 {
7910                   path_down_mode = FALSE;
7911                   gtk_tree_path_up (path);
7912
7913                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7914                                                              path,
7915                                                              selection_data))
7916                     suggested_action = 0;
7917                 }
7918               else
7919                 suggested_action = 0;
7920             }
7921         }
7922
7923       gdk_drag_status (context, suggested_action, time);
7924
7925       if (path)
7926         gtk_tree_path_free (path);
7927
7928       /* If you can't drop, remove user drop indicator until the next motion */
7929       if (suggested_action == 0)
7930         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7931                                          NULL,
7932                                          GTK_TREE_VIEW_DROP_BEFORE);
7933
7934       return;
7935     }
7936
7937   dest_row = get_dest_row (context, &path_down_mode);
7938
7939   if (dest_row == NULL)
7940     return;
7941
7942   if (gtk_selection_data_get_length (selection_data) >= 0)
7943     {
7944       if (path_down_mode)
7945         {
7946           gtk_tree_path_down (dest_row);
7947           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7948                                                      dest_row, selection_data))
7949             gtk_tree_path_up (dest_row);
7950         }
7951     }
7952
7953   if (gtk_selection_data_get_length (selection_data) >= 0)
7954     {
7955       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7956                                                  dest_row,
7957                                                  selection_data))
7958         accepted = TRUE;
7959     }
7960
7961   gtk_drag_finish (context,
7962                    accepted,
7963                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7964                    time);
7965
7966   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7967       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7968       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7969     {
7970       /* special special case drag to "0", scroll to first item */
7971       if (!tree_view->priv->scroll_to_path)
7972         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7973     }
7974
7975   gtk_tree_path_free (dest_row);
7976
7977   /* drop dest_row */
7978   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7979 }
7980
7981
7982
7983 /* GtkContainer Methods
7984  */
7985
7986
7987 static void
7988 gtk_tree_view_remove (GtkContainer *container,
7989                       GtkWidget    *widget)
7990 {
7991   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7992   GtkTreeViewChild *child = NULL;
7993   GList *tmp_list;
7994
7995   tmp_list = tree_view->priv->children;
7996   while (tmp_list)
7997     {
7998       child = tmp_list->data;
7999       if (child->widget == widget)
8000         {
8001           gtk_widget_unparent (widget);
8002
8003           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8004           g_list_free_1 (tmp_list);
8005           g_slice_free (GtkTreeViewChild, child);
8006           return;
8007         }
8008
8009       tmp_list = tmp_list->next;
8010     }
8011
8012   tmp_list = tree_view->priv->columns;
8013
8014   while (tmp_list)
8015     {
8016       GtkTreeViewColumn *column;
8017       GtkWidget         *button;
8018
8019       column = tmp_list->data;
8020       button = gtk_tree_view_column_get_button (column);
8021
8022       if (button == widget)
8023         {
8024           gtk_widget_unparent (widget);
8025           return;
8026         }
8027       tmp_list = tmp_list->next;
8028     }
8029 }
8030
8031 static void
8032 gtk_tree_view_forall (GtkContainer *container,
8033                       gboolean      include_internals,
8034                       GtkCallback   callback,
8035                       gpointer      callback_data)
8036 {
8037   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8038   GtkTreeViewChild *child = NULL;
8039   GtkTreeViewColumn *column;
8040   GtkWidget *button;
8041   GList *tmp_list;
8042
8043   tmp_list = tree_view->priv->children;
8044   while (tmp_list)
8045     {
8046       child = tmp_list->data;
8047       tmp_list = tmp_list->next;
8048
8049       (* callback) (child->widget, callback_data);
8050     }
8051   if (include_internals == FALSE)
8052     return;
8053
8054   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8055     {
8056       column = tmp_list->data;
8057       button = gtk_tree_view_column_get_button (column);
8058
8059       if (button)
8060         (* callback) (button, callback_data);
8061     }
8062 }
8063
8064 /* Returns TRUE is any of the columns contains a cell that can-focus.
8065  * If this is not the case, a column-spanning focus rectangle will be
8066  * drawn.
8067  */
8068 static gboolean
8069 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8070 {
8071   GList *list;
8072
8073   for (list = tree_view->priv->columns; list; list = list->next)
8074     {
8075       GtkTreeViewColumn *column = list->data;
8076
8077       if (!gtk_tree_view_column_get_visible (column))
8078         continue;
8079       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8080         return TRUE;
8081     }
8082
8083   return FALSE;
8084 }
8085
8086 static void
8087 column_sizing_notify (GObject    *object,
8088                       GParamSpec *pspec,
8089                       gpointer    data)
8090 {
8091   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8092
8093   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8094     /* disable fixed height mode */
8095     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8096 }
8097
8098 /**
8099  * gtk_tree_view_set_fixed_height_mode:
8100  * @tree_view: a #GtkTreeView
8101  * @enable: %TRUE to enable fixed height mode
8102  *
8103  * Enables or disables the fixed height mode of @tree_view.
8104  * Fixed height mode speeds up #GtkTreeView by assuming that all
8105  * rows have the same height.
8106  * Only enable this option if all rows are the same height and all
8107  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8108  *
8109  * Since: 2.6
8110  **/
8111 void
8112 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8113                                      gboolean     enable)
8114 {
8115   GList *l;
8116
8117   enable = enable != FALSE;
8118
8119   if (enable == tree_view->priv->fixed_height_mode)
8120     return;
8121
8122   if (!enable)
8123     {
8124       tree_view->priv->fixed_height_mode = 0;
8125       tree_view->priv->fixed_height = -1;
8126
8127       /* force a revalidation */
8128       install_presize_handler (tree_view);
8129     }
8130   else
8131     {
8132       /* make sure all columns are of type FIXED */
8133       for (l = tree_view->priv->columns; l; l = l->next)
8134         {
8135           GtkTreeViewColumn *c = l->data;
8136
8137           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8138         }
8139
8140       /* yes, we really have to do this is in a separate loop */
8141       for (l = tree_view->priv->columns; l; l = l->next)
8142         g_signal_connect (l->data, "notify::sizing",
8143                           G_CALLBACK (column_sizing_notify), tree_view);
8144
8145       tree_view->priv->fixed_height_mode = 1;
8146       tree_view->priv->fixed_height = -1;
8147
8148       if (tree_view->priv->tree)
8149         initialize_fixed_height_mode (tree_view);
8150     }
8151
8152   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8153 }
8154
8155 /**
8156  * gtk_tree_view_get_fixed_height_mode:
8157  * @tree_view: a #GtkTreeView
8158  *
8159  * Returns whether fixed height mode is turned on for @tree_view.
8160  *
8161  * Return value: %TRUE if @tree_view is in fixed height mode
8162  *
8163  * Since: 2.6
8164  **/
8165 gboolean
8166 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8167 {
8168   return tree_view->priv->fixed_height_mode;
8169 }
8170
8171 /* Returns TRUE if the focus is within the headers, after the focus operation is
8172  * done
8173  */
8174 static gboolean
8175 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8176                             GtkDirectionType  dir,
8177                             gboolean          clamp_column_visible)
8178 {
8179   GtkTreeViewColumn *column;
8180   GtkWidget *focus_child;
8181   GtkWidget *button;
8182   GList *last_column, *first_column;
8183   GList *tmp_list;
8184   gboolean rtl;
8185
8186   if (! tree_view->priv->headers_visible)
8187     return FALSE;
8188
8189   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8190
8191   first_column = tree_view->priv->columns;
8192   while (first_column)
8193     {
8194       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8195       button = gtk_tree_view_column_get_button (column);
8196
8197       if (gtk_widget_get_can_focus (button) &&
8198           gtk_tree_view_column_get_visible (column) &&
8199           (gtk_tree_view_column_get_clickable (column) ||
8200            gtk_tree_view_column_get_reorderable (column)))
8201         break;
8202       first_column = first_column->next;
8203     }
8204
8205   /* No headers are visible, or are focusable.  We can't focus in or out.
8206    */
8207   if (first_column == NULL)
8208     return FALSE;
8209
8210   last_column = g_list_last (tree_view->priv->columns);
8211   while (last_column)
8212     {
8213       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8214       button = gtk_tree_view_column_get_button (column);
8215
8216       if (gtk_widget_get_can_focus (button) &&
8217           gtk_tree_view_column_get_visible (column) &&
8218           (gtk_tree_view_column_get_clickable (column) ||
8219            gtk_tree_view_column_get_reorderable (column)))
8220         break;
8221       last_column = last_column->prev;
8222     }
8223
8224
8225   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8226
8227   switch (dir)
8228     {
8229     case GTK_DIR_TAB_BACKWARD:
8230     case GTK_DIR_TAB_FORWARD:
8231     case GTK_DIR_UP:
8232     case GTK_DIR_DOWN:
8233       if (focus_child == NULL)
8234         {
8235           if (tree_view->priv->focus_column != NULL)
8236             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8237           else
8238             button = NULL;
8239
8240           if (button && gtk_widget_get_can_focus (button))
8241             focus_child = button;
8242           else
8243             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8244
8245           gtk_widget_grab_focus (focus_child);
8246           break;
8247         }
8248       return FALSE;
8249
8250     case GTK_DIR_LEFT:
8251     case GTK_DIR_RIGHT:
8252       if (focus_child == NULL)
8253         {
8254           if (tree_view->priv->focus_column != NULL)
8255             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8256           else if (dir == GTK_DIR_LEFT)
8257             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8258           else
8259             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8260
8261           gtk_widget_grab_focus (focus_child);
8262           break;
8263         }
8264
8265       if (gtk_widget_child_focus (focus_child, dir))
8266         {
8267           /* The focus moves inside the button. */
8268           /* This is probably a great example of bad UI */
8269           break;
8270         }
8271
8272       /* We need to move the focus among the row of buttons. */
8273       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8274         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8275           break;
8276
8277       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8278           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8279         {
8280           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8281           break;
8282         }
8283
8284       while (tmp_list)
8285         {
8286           GtkTreeViewColumn *column;
8287           GtkWidget         *button;
8288
8289           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8290             tmp_list = tmp_list->next;
8291           else
8292             tmp_list = tmp_list->prev;
8293
8294           if (tmp_list == NULL)
8295             {
8296               g_warning ("Internal button not found");
8297               break;
8298             }
8299           column = tmp_list->data;
8300           button = gtk_tree_view_column_get_button (column);
8301           if (button &&
8302               gtk_tree_view_column_get_visible (column) &&
8303               gtk_widget_get_can_focus (button))
8304             {
8305               focus_child = button;
8306               gtk_widget_grab_focus (button);
8307               break;
8308             }
8309         }
8310       break;
8311     default:
8312       g_assert_not_reached ();
8313       break;
8314     }
8315
8316   /* if focus child is non-null, we assume it's been set to the current focus child
8317    */
8318   if (focus_child)
8319     {
8320       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8321         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8322           {
8323             _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (tmp_list->data));
8324             break;
8325           }
8326
8327       if (clamp_column_visible)
8328         {
8329           gtk_tree_view_clamp_column_visible (tree_view,
8330                                               tree_view->priv->focus_column,
8331                                               FALSE);
8332         }
8333     }
8334
8335   return (focus_child != NULL);
8336 }
8337
8338 /* This function returns in 'path' the first focusable path, if the given path
8339  * is already focusable, it's the returned one.
8340  */
8341 static gboolean
8342 search_first_focusable_path (GtkTreeView  *tree_view,
8343                              GtkTreePath **path,
8344                              gboolean      search_forward,
8345                              GtkRBTree   **new_tree,
8346                              GtkRBNode   **new_node)
8347 {
8348   GtkRBTree *tree = NULL;
8349   GtkRBNode *node = NULL;
8350
8351   if (!path || !*path)
8352     return FALSE;
8353
8354   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8355
8356   if (!tree || !node)
8357     return FALSE;
8358
8359   while (node && row_is_separator (tree_view, NULL, *path))
8360     {
8361       if (search_forward)
8362         _gtk_rbtree_next_full (tree, node, &tree, &node);
8363       else
8364         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8365
8366       if (*path)
8367         gtk_tree_path_free (*path);
8368
8369       if (node)
8370         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8371       else
8372         *path = NULL;
8373     }
8374
8375   if (new_tree)
8376     *new_tree = tree;
8377
8378   if (new_node)
8379     *new_node = node;
8380
8381   return (*path != NULL);
8382 }
8383
8384 static gint
8385 gtk_tree_view_focus (GtkWidget        *widget,
8386                      GtkDirectionType  direction)
8387 {
8388   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8389   GtkContainer *container = GTK_CONTAINER (widget);
8390   GtkWidget *focus_child;
8391
8392   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8393     return FALSE;
8394
8395   focus_child = gtk_container_get_focus_child (container);
8396
8397   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8398   /* Case 1.  Headers currently have focus. */
8399   if (focus_child)
8400     {
8401       switch (direction)
8402         {
8403         case GTK_DIR_LEFT:
8404         case GTK_DIR_RIGHT:
8405           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8406           return TRUE;
8407         case GTK_DIR_TAB_BACKWARD:
8408         case GTK_DIR_UP:
8409           return FALSE;
8410         case GTK_DIR_TAB_FORWARD:
8411         case GTK_DIR_DOWN:
8412           gtk_widget_grab_focus (widget);
8413           return TRUE;
8414         default:
8415           g_assert_not_reached ();
8416           return FALSE;
8417         }
8418     }
8419
8420   /* Case 2. We don't have focus at all. */
8421   if (!gtk_widget_has_focus (widget))
8422     {
8423       gtk_widget_grab_focus (widget);
8424       return TRUE;
8425     }
8426
8427   /* Case 3. We have focus already. */
8428   if (direction == GTK_DIR_TAB_BACKWARD)
8429     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8430   else if (direction == GTK_DIR_TAB_FORWARD)
8431     return FALSE;
8432
8433   /* Other directions caught by the keybindings */
8434   gtk_widget_grab_focus (widget);
8435   return TRUE;
8436 }
8437
8438 static void
8439 gtk_tree_view_grab_focus (GtkWidget *widget)
8440 {
8441   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8442
8443   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8444 }
8445
8446 static void
8447 gtk_tree_view_style_updated (GtkWidget *widget)
8448 {
8449   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8450   GList *list;
8451   GtkTreeViewColumn *column;
8452
8453   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8454
8455   if (gtk_widget_get_realized (widget))
8456     {
8457       gtk_tree_view_ensure_background (tree_view);
8458
8459       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8460       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8461     }
8462
8463   gtk_widget_style_get (widget,
8464                         "expander-size", &tree_view->priv->expander_size,
8465                         NULL);
8466   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8467
8468   for (list = tree_view->priv->columns; list; list = list->next)
8469     {
8470       column = list->data;
8471       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8472     }
8473
8474   tree_view->priv->fixed_height = -1;
8475   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8476
8477   gtk_widget_queue_resize (widget);
8478 }
8479
8480
8481 static void
8482 gtk_tree_view_set_focus_child (GtkContainer *container,
8483                                GtkWidget    *child)
8484 {
8485   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8486   GList *list;
8487
8488   for (list = tree_view->priv->columns; list; list = list->next)
8489     {
8490       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8491         {
8492           _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
8493           break;
8494         }
8495     }
8496
8497   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8498 }
8499
8500 static GtkWidgetPath *
8501 gtk_tree_view_get_path_for_child (GtkContainer *container,
8502                                   GtkWidget    *child)
8503 {
8504   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8505   GtkWidgetPath *path;
8506   gboolean rtl;
8507   GList *list;
8508   gint n_col = 0;
8509
8510   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8511   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8512
8513   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8514        list;
8515        list = (rtl ? list->prev : list->next))
8516     {
8517       GtkTreeViewColumn *column = list->data;
8518       GtkRegionFlags flags = 0;
8519
8520       if (!gtk_tree_view_column_get_visible (column))
8521         continue;
8522
8523       n_col++;
8524
8525       if (gtk_tree_view_column_get_widget (column) != child &&
8526           gtk_tree_view_column_get_button (column) != child)
8527         continue;
8528
8529       if ((n_col % 2) == 0)
8530         flags |= GTK_REGION_EVEN;
8531       else
8532         flags |= GTK_REGION_ODD;
8533
8534       if (n_col == 1)
8535         flags |= GTK_REGION_FIRST;
8536
8537       if ((rtl && !list->prev) ||
8538           (!rtl && !list->next))
8539         flags |= GTK_REGION_LAST;
8540
8541       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8542       break;
8543     }
8544
8545   gtk_widget_path_append_for_widget (path, child);
8546
8547   return path;
8548 }
8549
8550 static gboolean
8551 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8552                                 GtkMovementStep    step,
8553                                 gint               count)
8554 {
8555   GdkModifierType state;
8556
8557   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8558   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8559                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8560                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8561                         step == GTK_MOVEMENT_PAGES ||
8562                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8563
8564   if (tree_view->priv->tree == NULL)
8565     return FALSE;
8566   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8567     return FALSE;
8568
8569   gtk_tree_view_stop_editing (tree_view, FALSE);
8570   tree_view->priv->draw_keyfocus = TRUE;
8571   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8572
8573   if (gtk_get_current_event_state (&state))
8574     {
8575       GdkModifierType extend_mod_mask;
8576       GdkModifierType modify_mod_mask;
8577
8578       extend_mod_mask =
8579         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8580                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8581
8582       modify_mod_mask =
8583         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8584                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8585
8586       if ((state & modify_mod_mask) == modify_mod_mask)
8587         tree_view->priv->modify_selection_pressed = TRUE;
8588       if ((state & extend_mod_mask) == extend_mod_mask)
8589         tree_view->priv->extend_selection_pressed = TRUE;
8590     }
8591   /* else we assume not pressed */
8592
8593   switch (step)
8594     {
8595       /* currently we make no distinction.  When we go bi-di, we need to */
8596     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8597     case GTK_MOVEMENT_VISUAL_POSITIONS:
8598       gtk_tree_view_move_cursor_left_right (tree_view, count);
8599       break;
8600     case GTK_MOVEMENT_DISPLAY_LINES:
8601       gtk_tree_view_move_cursor_up_down (tree_view, count);
8602       break;
8603     case GTK_MOVEMENT_PAGES:
8604       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8605       break;
8606     case GTK_MOVEMENT_BUFFER_ENDS:
8607       gtk_tree_view_move_cursor_start_end (tree_view, count);
8608       break;
8609     default:
8610       g_assert_not_reached ();
8611     }
8612
8613   tree_view->priv->modify_selection_pressed = FALSE;
8614   tree_view->priv->extend_selection_pressed = FALSE;
8615
8616   return TRUE;
8617 }
8618
8619 static void
8620 gtk_tree_view_put (GtkTreeView *tree_view,
8621                    GtkWidget   *child_widget,
8622                    /* in bin_window coordinates */
8623                    gint         x,
8624                    gint         y,
8625                    gint         width,
8626                    gint         height)
8627 {
8628   GtkTreeViewChild *child;
8629
8630   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8631   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8632
8633   child = g_slice_new (GtkTreeViewChild);
8634
8635   child->widget = child_widget;
8636   child->x = x;
8637   child->y = y;
8638   child->width = width;
8639   child->height = height;
8640
8641   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8642
8643   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8644     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8645
8646   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8647 }
8648
8649 void
8650 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8651                                   GtkWidget   *widget,
8652                                   /* in tree coordinates */
8653                                   gint         x,
8654                                   gint         y,
8655                                   gint         width,
8656                                   gint         height)
8657 {
8658   GtkTreeViewChild *child = NULL;
8659   GList *list;
8660   GdkRectangle allocation;
8661
8662   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8663   g_return_if_fail (GTK_IS_WIDGET (widget));
8664
8665   for (list = tree_view->priv->children; list; list = list->next)
8666     {
8667       if (((GtkTreeViewChild *)list->data)->widget == widget)
8668         {
8669           child = list->data;
8670           break;
8671         }
8672     }
8673   if (child == NULL)
8674     return;
8675
8676   allocation.x = child->x = x;
8677   allocation.y = child->y = y;
8678   allocation.width = child->width = width;
8679   allocation.height = child->height = height;
8680
8681   if (gtk_widget_get_realized (widget))
8682     gtk_widget_size_allocate (widget, &allocation);
8683 }
8684
8685
8686 /* TreeModel Callbacks
8687  */
8688
8689 static void
8690 gtk_tree_view_row_changed (GtkTreeModel *model,
8691                            GtkTreePath  *path,
8692                            GtkTreeIter  *iter,
8693                            gpointer      data)
8694 {
8695   GtkTreeView *tree_view = (GtkTreeView *)data;
8696   GtkRBTree *tree;
8697   GtkRBNode *node;
8698   gboolean free_path = FALSE;
8699   GList *list;
8700   GtkTreePath *cursor_path;
8701
8702   g_return_if_fail (path != NULL || iter != NULL);
8703
8704   if (tree_view->priv->cursor_node != NULL)
8705     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
8706                                                   tree_view->priv->cursor_node);
8707   else
8708     cursor_path = NULL;
8709
8710   if (tree_view->priv->edited_column &&
8711       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8712     gtk_tree_view_stop_editing (tree_view, TRUE);
8713
8714   if (cursor_path != NULL)
8715     gtk_tree_path_free (cursor_path);
8716
8717   if (path == NULL)
8718     {
8719       path = gtk_tree_model_get_path (model, iter);
8720       free_path = TRUE;
8721     }
8722   else if (iter == NULL)
8723     gtk_tree_model_get_iter (model, iter, path);
8724
8725   if (_gtk_tree_view_find_node (tree_view,
8726                                 path,
8727                                 &tree,
8728                                 &node))
8729     /* We aren't actually showing the node */
8730     goto done;
8731
8732   if (tree == NULL)
8733     goto done;
8734
8735   _gtk_tree_view_accessible_changed (tree_view, tree, node);
8736
8737   if (tree_view->priv->fixed_height_mode
8738       && tree_view->priv->fixed_height >= 0)
8739     {
8740       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8741       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8742         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8743     }
8744   else
8745     {
8746       _gtk_rbtree_node_mark_invalid (tree, node);
8747       for (list = tree_view->priv->columns; list; list = list->next)
8748         {
8749           GtkTreeViewColumn *column;
8750
8751           column = list->data;
8752           if (!gtk_tree_view_column_get_visible (column))
8753             continue;
8754
8755           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8756             {
8757               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8758             }
8759         }
8760     }
8761
8762  done:
8763   if (!tree_view->priv->fixed_height_mode &&
8764       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8765     install_presize_handler (tree_view);
8766   if (free_path)
8767     gtk_tree_path_free (path);
8768 }
8769
8770 static void
8771 gtk_tree_view_row_inserted (GtkTreeModel *model,
8772                             GtkTreePath  *path,
8773                             GtkTreeIter  *iter,
8774                             gpointer      data)
8775 {
8776   GtkTreeView *tree_view = (GtkTreeView *) data;
8777   gint *indices;
8778   GtkRBTree *tree;
8779   GtkRBNode *tmpnode = NULL;
8780   gint depth;
8781   gint i = 0;
8782   gint height;
8783   gboolean free_path = FALSE;
8784   gboolean node_visible = TRUE;
8785
8786   g_return_if_fail (path != NULL || iter != NULL);
8787
8788   if (tree_view->priv->fixed_height_mode
8789       && tree_view->priv->fixed_height >= 0)
8790     height = tree_view->priv->fixed_height;
8791   else
8792     height = 0;
8793
8794   if (path == NULL)
8795     {
8796       path = gtk_tree_model_get_path (model, iter);
8797       free_path = TRUE;
8798     }
8799   else if (iter == NULL)
8800     gtk_tree_model_get_iter (model, iter, path);
8801
8802   if (tree_view->priv->tree == NULL)
8803     tree_view->priv->tree = _gtk_rbtree_new ();
8804
8805   tree = tree_view->priv->tree;
8806
8807   /* Update all row-references */
8808   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8809   depth = gtk_tree_path_get_depth (path);
8810   indices = gtk_tree_path_get_indices (path);
8811
8812   /* First, find the parent tree */
8813   while (i < depth - 1)
8814     {
8815       if (tree == NULL)
8816         {
8817           /* We aren't showing the node */
8818           node_visible = FALSE;
8819           goto done;
8820         }
8821
8822       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8823       if (tmpnode == NULL)
8824         {
8825           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8826                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8827                      "before the parent was inserted.");
8828           goto done;
8829         }
8830       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8831         {
8832           /* FIXME enforce correct behavior on model, probably */
8833           /* In theory, the model should have emitted has_child_toggled here.  We
8834            * try to catch it anyway, just to be safe, in case the model hasn't.
8835            */
8836           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8837           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8838           gtk_tree_path_free (tmppath);
8839           goto done;
8840         }
8841
8842       tree = tmpnode->children;
8843       i++;
8844     }
8845
8846   if (tree == NULL)
8847     {
8848       node_visible = FALSE;
8849       goto done;
8850     }
8851
8852   /* ref the node */
8853   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8854   if (indices[depth - 1] == 0)
8855     {
8856       tmpnode = _gtk_rbtree_find_count (tree, 1);
8857       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8858     }
8859   else
8860     {
8861       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8862       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8863     }
8864
8865   _gtk_tree_view_accessible_add (tree_view, tree, tmpnode);
8866
8867  done:
8868   if (height > 0)
8869     {
8870       if (tree)
8871         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8872
8873       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8874         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8875       else
8876         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8877     }
8878   else
8879     install_presize_handler (tree_view);
8880   if (free_path)
8881     gtk_tree_path_free (path);
8882 }
8883
8884 static void
8885 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8886                                      GtkTreePath  *path,
8887                                      GtkTreeIter  *iter,
8888                                      gpointer      data)
8889 {
8890   GtkTreeView *tree_view = (GtkTreeView *)data;
8891   GtkTreeIter real_iter;
8892   gboolean has_child;
8893   GtkRBTree *tree;
8894   GtkRBNode *node;
8895   gboolean free_path = FALSE;
8896
8897   g_return_if_fail (path != NULL || iter != NULL);
8898
8899   if (iter)
8900     real_iter = *iter;
8901
8902   if (path == NULL)
8903     {
8904       path = gtk_tree_model_get_path (model, iter);
8905       free_path = TRUE;
8906     }
8907   else if (iter == NULL)
8908     gtk_tree_model_get_iter (model, &real_iter, path);
8909
8910   if (_gtk_tree_view_find_node (tree_view,
8911                                 path,
8912                                 &tree,
8913                                 &node))
8914     /* We aren't actually showing the node */
8915     goto done;
8916
8917   if (tree == NULL)
8918     goto done;
8919
8920   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8921   /* Sanity check.
8922    */
8923   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8924     goto done;
8925
8926   if (has_child)
8927     {
8928       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8929       _gtk_tree_view_accessible_add_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8930     }
8931   else
8932     {
8933       GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8934       _gtk_tree_view_accessible_remove_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8935     }
8936
8937   if (has_child && tree_view->priv->is_list)
8938     {
8939       tree_view->priv->is_list = FALSE;
8940       if (tree_view->priv->show_expanders)
8941         {
8942           GList *list;
8943
8944           for (list = tree_view->priv->columns; list; list = list->next)
8945             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8946               {
8947                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8948                 break;
8949               }
8950         }
8951       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8952     }
8953   else
8954     {
8955       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8956     }
8957
8958  done:
8959   if (free_path)
8960     gtk_tree_path_free (path);
8961 }
8962
8963 static void
8964 count_children_helper (GtkRBTree *tree,
8965                        GtkRBNode *node,
8966                        gpointer   data)
8967 {
8968   if (node->children)
8969     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8970   (*((gint *)data))++;
8971 }
8972
8973 static void
8974 check_selection_helper (GtkRBTree *tree,
8975                         GtkRBNode *node,
8976                         gpointer   data)
8977 {
8978   gint *value = (gint *)data;
8979
8980   *value |= GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8981
8982   if (node->children && !*value)
8983     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8984 }
8985
8986 static void
8987 gtk_tree_view_row_deleted (GtkTreeModel *model,
8988                            GtkTreePath  *path,
8989                            gpointer      data)
8990 {
8991   GtkTreeView *tree_view = (GtkTreeView *)data;
8992   GtkRBTree *tree;
8993   GtkRBNode *node;
8994   GList *list;
8995   gboolean selection_changed = FALSE, cursor_changed = FALSE;
8996   GtkRBTree *cursor_tree = NULL;
8997   GtkRBNode *cursor_node = NULL;
8998   GtkStyleContext *context;
8999
9000   g_return_if_fail (path != NULL);
9001
9002   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9003
9004   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9005     return;
9006
9007   if (tree == NULL)
9008     return;
9009
9010   /* check if the selection has been changed */
9011   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9012                         check_selection_helper, &selection_changed);
9013
9014   for (list = tree_view->priv->columns; list; list = list->next)
9015     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9016         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9017       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9018
9019   /* Ensure we don't have a dangling pointer to a dead node */
9020   ensure_unprelighted (tree_view);
9021
9022   /* Cancel editting if we've started */
9023   gtk_tree_view_stop_editing (tree_view, TRUE);
9024
9025   /* If the cursor row got deleted, move the cursor to the next row */
9026   if (tree_view->priv->cursor_node &&
9027       (tree_view->priv->cursor_node == node ||
9028        (node->children &&  _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree))))
9029     {
9030       GtkTreePath *cursor_path;
9031
9032       cursor_tree = tree;
9033       cursor_node = _gtk_rbtree_next (tree, node);
9034       /* find the first node that is not going to be deleted */
9035       while (cursor_node == NULL && cursor_tree->parent_tree)
9036         {
9037           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9038                                           cursor_tree->parent_node);
9039           cursor_tree = cursor_tree->parent_tree;
9040         }
9041
9042       if (cursor_node != NULL)
9043         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9044       else
9045         cursor_path = NULL;
9046
9047       if (cursor_path == NULL ||
9048           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9049                                          &cursor_tree, &cursor_node))
9050         {
9051           /* It looks like we reached the end of the view without finding
9052            * a focusable row.  We will step backwards to find the last
9053            * focusable row.
9054            */
9055           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9056           if (cursor_node)
9057             {
9058               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9059               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9060                                                  &cursor_tree, &cursor_node))
9061                 cursor_node = NULL;
9062               gtk_tree_path_free (cursor_path);
9063             }
9064         }
9065       else if (cursor_path)
9066         gtk_tree_path_free (cursor_path);
9067
9068       cursor_changed = TRUE;
9069     }
9070
9071   if (tree_view->priv->destroy_count_func)
9072     {
9073       gint child_count = 0;
9074       if (node->children)
9075         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9076       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9077     }
9078
9079   if (tree->root->count == 1)
9080     {
9081       if (tree_view->priv->tree == tree)
9082         tree_view->priv->tree = NULL;
9083
9084       _gtk_tree_view_accessible_remove_state (tree_view,
9085                                               tree->parent_tree, tree->parent_node,
9086                                               GTK_CELL_RENDERER_EXPANDED);
9087       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9088       _gtk_rbtree_remove (tree);
9089     }
9090   else
9091     {
9092       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9093       _gtk_rbtree_remove_node (tree, node);
9094     }
9095
9096   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9097     {
9098       gtk_tree_row_reference_free (tree_view->priv->top_row);
9099       tree_view->priv->top_row = NULL;
9100     }
9101
9102   /* Cancel any ongoing animation happening within the row */
9103   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9104   gtk_style_context_cancel_animations (context, node);
9105
9106   install_scroll_sync_handler (tree_view);
9107
9108   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9109
9110   if (cursor_changed)
9111     {
9112       if (cursor_node)
9113         {
9114           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9115           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9116           gtk_tree_path_free (cursor_path);
9117         }
9118       else
9119         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9120     }
9121   if (selection_changed)
9122     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9123 }
9124
9125 static void
9126 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9127                               GtkTreePath  *parent,
9128                               GtkTreeIter  *iter,
9129                               gint         *new_order,
9130                               gpointer      data)
9131 {
9132   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9133   GtkRBTree *tree;
9134   GtkRBNode *node;
9135   gint len;
9136
9137   len = gtk_tree_model_iter_n_children (model, iter);
9138
9139   if (len < 2)
9140     return;
9141
9142   gtk_tree_row_reference_reordered (G_OBJECT (data),
9143                                     parent,
9144                                     iter,
9145                                     new_order);
9146
9147   if (_gtk_tree_view_find_node (tree_view,
9148                                 parent,
9149                                 &tree,
9150                                 &node))
9151     return;
9152
9153   /* We need to special case the parent path */
9154   if (tree == NULL)
9155     tree = tree_view->priv->tree;
9156   else
9157     tree = node->children;
9158
9159   if (tree == NULL)
9160     return;
9161
9162   if (tree_view->priv->edited_column)
9163     gtk_tree_view_stop_editing (tree_view, TRUE);
9164
9165   /* we need to be unprelighted */
9166   ensure_unprelighted (tree_view);
9167
9168   _gtk_rbtree_reorder (tree, new_order, len);
9169
9170   _gtk_tree_view_accessible_reorder (tree_view);
9171
9172   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9173
9174   gtk_tree_view_dy_to_top_row (tree_view);
9175 }
9176
9177
9178 /* Internal tree functions
9179  */
9180
9181
9182 static void
9183 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9184                                      GtkRBTree         *tree,
9185                                      GtkTreeViewColumn *column,
9186                                      gint              *x1,
9187                                      gint              *x2)
9188 {
9189   GtkTreeViewColumn *tmp_column = NULL;
9190   gint total_width;
9191   GList *list;
9192   gboolean rtl;
9193
9194   if (x1)
9195     *x1 = 0;
9196
9197   if (x2)
9198     *x2 = 0;
9199
9200   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9201
9202   total_width = 0;
9203   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9204        list;
9205        list = (rtl ? list->prev : list->next))
9206     {
9207       tmp_column = list->data;
9208
9209       if (tmp_column == column)
9210         break;
9211
9212       if (gtk_tree_view_column_get_visible (tmp_column))
9213         total_width += gtk_tree_view_column_get_width (tmp_column);
9214     }
9215
9216   if (tmp_column != column)
9217     {
9218       g_warning (G_STRLOC": passed-in column isn't in the tree");
9219       return;
9220     }
9221
9222   if (x1)
9223     *x1 = total_width;
9224
9225   if (x2)
9226     {
9227       if (gtk_tree_view_column_get_visible (column))
9228         *x2 = total_width + gtk_tree_view_column_get_width (column);
9229       else
9230         *x2 = total_width; /* width of 0 */
9231     }
9232 }
9233
9234 static void
9235 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9236                                 GtkRBTree   *tree,
9237                                 gint        *x1,
9238                                 gint        *x2)
9239 {
9240   gint x_offset = 0;
9241   GList *list;
9242   GtkTreeViewColumn *tmp_column = NULL;
9243   gint total_width;
9244   gboolean indent_expanders;
9245   gboolean rtl;
9246
9247   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9248
9249   total_width = 0;
9250   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9251        list;
9252        list = (rtl ? list->prev : list->next))
9253     {
9254       tmp_column = list->data;
9255
9256       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9257         {
9258           if (rtl)
9259             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9260           else
9261             x_offset = total_width;
9262           break;
9263         }
9264
9265       if (gtk_tree_view_column_get_visible (tmp_column))
9266         total_width += gtk_tree_view_column_get_width (tmp_column);
9267     }
9268
9269   gtk_widget_style_get (GTK_WIDGET (tree_view),
9270                         "indent-expanders", &indent_expanders,
9271                         NULL);
9272
9273   if (indent_expanders)
9274     {
9275       if (rtl)
9276         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9277       else
9278         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9279     }
9280
9281   *x1 = x_offset;
9282
9283   if (tmp_column &&
9284       gtk_tree_view_column_get_visible (tmp_column))
9285     /* +1 because x2 isn't included in the range. */
9286     *x2 = *x1 + tree_view->priv->expander_size + 1;
9287   else
9288     *x2 = *x1;
9289 }
9290
9291 static void
9292 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9293                           GtkRBTree   *tree,
9294                           GtkTreeIter *iter,
9295                           gint         depth,
9296                           gboolean     recurse)
9297 {
9298   GtkRBNode *temp = NULL;
9299   GtkTreePath *path = NULL;
9300
9301   do
9302     {
9303       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9304       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9305
9306       if (tree_view->priv->fixed_height > 0)
9307         {
9308           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9309             {
9310               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9311               _gtk_rbtree_node_mark_valid (tree, temp);
9312             }
9313         }
9314
9315       if (tree_view->priv->is_list)
9316         continue;
9317
9318       if (recurse)
9319         {
9320           GtkTreeIter child;
9321
9322           if (!path)
9323             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9324           else
9325             gtk_tree_path_next (path);
9326
9327           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9328             {
9329               gboolean expand;
9330
9331               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9332
9333               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9334                   && !expand)
9335                 {
9336                   temp->children = _gtk_rbtree_new ();
9337                   temp->children->parent_tree = tree;
9338                   temp->children->parent_node = temp;
9339                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9340                 }
9341             }
9342         }
9343
9344       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9345         {
9346           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9347             temp->flags ^= GTK_RBNODE_IS_PARENT;
9348         }
9349     }
9350   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9351
9352   if (path)
9353     gtk_tree_path_free (path);
9354 }
9355
9356 /* Make sure the node is visible vertically */
9357 static void
9358 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9359                                   GtkRBTree   *tree,
9360                                   GtkRBNode   *node)
9361 {
9362   gint node_dy, height;
9363   GtkTreePath *path = NULL;
9364
9365   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9366     return;
9367
9368   /* just return if the node is visible, avoiding a costly expose */
9369   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9370   height = gtk_tree_view_get_row_height (tree_view, node);
9371   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9372       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9373       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9374                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9375     return;
9376
9377   path = _gtk_tree_path_new_from_rbtree (tree, node);
9378   if (path)
9379     {
9380       /* We process updates because we want to clear old selected items when we scroll.
9381        * if this is removed, we get a "selection streak" at the bottom. */
9382       gtk_tree_view_bin_process_updates (tree_view);
9383
9384       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9385       gtk_tree_path_free (path);
9386     }
9387 }
9388
9389 static void
9390 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9391                                     GtkTreeViewColumn *column,
9392                                     gboolean           focus_to_cell)
9393 {
9394   GtkAllocation allocation;
9395   gint x, width;
9396
9397   if (column == NULL)
9398     return;
9399
9400   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9401   x = allocation.x;
9402   width = allocation.width;
9403
9404   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9405     {
9406       /* The column is larger than the horizontal page size.  If the
9407        * column has cells which can be focussed individually, then we make
9408        * sure the cell which gets focus is fully visible (if even the
9409        * focus cell is bigger than the page size, we make sure the
9410        * left-hand side of the cell is visible).
9411        *
9412        * If the column does not have an activatable cell, we
9413        * make sure the left-hand side of the column is visible.
9414        */
9415
9416       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9417         {
9418           GtkCellArea *cell_area;
9419           GtkCellRenderer *focus_cell;
9420
9421           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9422           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9423
9424           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9425                                                       &x, &width))
9426             {
9427               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9428                 {
9429                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9430                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9431                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9432                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9433                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9434                 }
9435             }
9436         }
9437
9438       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9439     }
9440   else
9441     {
9442       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9443           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9444                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9445       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9446         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9447   }
9448 }
9449
9450 /* This function could be more efficient.  I'll optimize it if profiling seems
9451  * to imply that it is important */
9452 GtkTreePath *
9453 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9454                                 GtkRBNode   *node)
9455 {
9456   GtkTreePath *path;
9457   GtkRBTree *tmp_tree;
9458   GtkRBNode *tmp_node, *last;
9459   gint count;
9460
9461   path = gtk_tree_path_new ();
9462
9463   g_return_val_if_fail (node != NULL, path);
9464
9465   count = 1 + node->left->count;
9466
9467   last = node;
9468   tmp_node = node->parent;
9469   tmp_tree = tree;
9470   while (tmp_tree)
9471     {
9472       while (!_gtk_rbtree_is_nil (tmp_node))
9473         {
9474           if (tmp_node->right == last)
9475             count += 1 + tmp_node->left->count;
9476           last = tmp_node;
9477           tmp_node = tmp_node->parent;
9478         }
9479       gtk_tree_path_prepend_index (path, count - 1);
9480       last = tmp_tree->parent_node;
9481       tmp_tree = tmp_tree->parent_tree;
9482       if (last)
9483         {
9484           count = 1 + last->left->count;
9485           tmp_node = last->parent;
9486         }
9487     }
9488   return path;
9489 }
9490
9491 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9492  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9493  * both set to NULL.
9494  */
9495 gboolean
9496 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9497                           GtkTreePath  *path,
9498                           GtkRBTree   **tree,
9499                           GtkRBNode   **node)
9500 {
9501   GtkRBNode *tmpnode = NULL;
9502   GtkRBTree *tmptree = tree_view->priv->tree;
9503   gint *indices = gtk_tree_path_get_indices (path);
9504   gint depth = gtk_tree_path_get_depth (path);
9505   gint i = 0;
9506
9507   *node = NULL;
9508   *tree = NULL;
9509
9510   if (depth == 0 || tmptree == NULL)
9511     return FALSE;
9512   do
9513     {
9514       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9515       ++i;
9516       if (tmpnode == NULL)
9517         {
9518           *tree = NULL;
9519           *node = NULL;
9520           return FALSE;
9521         }
9522       if (i >= depth)
9523         {
9524           *tree = tmptree;
9525           *node = tmpnode;
9526           return FALSE;
9527         }
9528       *tree = tmptree;
9529       *node = tmpnode;
9530       tmptree = tmpnode->children;
9531       if (tmptree == NULL)
9532         return TRUE;
9533     }
9534   while (1);
9535 }
9536
9537 static gboolean
9538 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9539                                   GtkTreeViewColumn *column)
9540 {
9541   GList *list;
9542
9543   if (tree_view->priv->is_list)
9544     return FALSE;
9545
9546   if (tree_view->priv->expander_column != NULL)
9547     {
9548       if (tree_view->priv->expander_column == column)
9549         return TRUE;
9550       return FALSE;
9551     }
9552   else
9553     {
9554       for (list = tree_view->priv->columns;
9555            list;
9556            list = list->next)
9557         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9558           break;
9559       if (list && list->data == column)
9560         return TRUE;
9561     }
9562   return FALSE;
9563 }
9564
9565 static inline gboolean
9566 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9567 {
9568   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9569     return TRUE;
9570   /* else */
9571   return FALSE;
9572 }
9573
9574 static void
9575 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9576                                 guint           keyval,
9577                                 guint           modmask,
9578                                 gboolean        add_shifted_binding,
9579                                 GtkMovementStep step,
9580                                 gint            count)
9581 {
9582
9583   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9584                                 "move-cursor", 2,
9585                                 G_TYPE_ENUM, step,
9586                                 G_TYPE_INT, count);
9587
9588   if (add_shifted_binding)
9589     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9590                                   "move-cursor", 2,
9591                                   G_TYPE_ENUM, step,
9592                                   G_TYPE_INT, count);
9593
9594   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9595    return;
9596
9597   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9598                                 "move-cursor", 2,
9599                                 G_TYPE_ENUM, step,
9600                                 G_TYPE_INT, count);
9601
9602   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9603                                 "move-cursor", 2,
9604                                 G_TYPE_ENUM, step,
9605                                 G_TYPE_INT, count);
9606 }
9607
9608 static gint
9609 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9610                                  GtkTreeIter  *iter,
9611                                  GtkRBTree    *tree,
9612                                  GtkRBNode    *node)
9613 {
9614   gint retval = FALSE;
9615   do
9616     {
9617       g_return_val_if_fail (node != NULL, FALSE);
9618
9619       if (node->children)
9620         {
9621           GtkTreeIter child;
9622           GtkRBTree *new_tree;
9623           GtkRBNode *new_node;
9624
9625           new_tree = node->children;
9626           new_node = _gtk_rbtree_first (new_tree);
9627
9628           if (!gtk_tree_model_iter_children (model, &child, iter))
9629             return FALSE;
9630
9631           retval = gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node) | retval;
9632         }
9633
9634       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9635         retval = TRUE;
9636       gtk_tree_model_unref_node (model, iter);
9637       node = _gtk_rbtree_next (tree, node);
9638     }
9639   while (gtk_tree_model_iter_next (model, iter));
9640
9641   return retval;
9642 }
9643
9644 static gint
9645 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9646                                               GtkRBTree   *tree)
9647 {
9648   GtkTreeIter iter;
9649   GtkTreePath *path;
9650   GtkRBNode *node;
9651   gint retval;
9652
9653   if (!tree)
9654     return FALSE;
9655
9656   node = _gtk_rbtree_first (tree);
9657
9658   g_return_val_if_fail (node != NULL, FALSE);
9659   path = _gtk_tree_path_new_from_rbtree (tree, node);
9660   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9661                            &iter, path);
9662   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9663   gtk_tree_path_free (path);
9664
9665   return retval;
9666 }
9667
9668 static void
9669 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9670                                     GtkTreeViewColumn *column)
9671 {
9672   GtkTreeViewColumn *left_column;
9673   GtkTreeViewColumn *cur_column = NULL;
9674   GtkTreeViewColumnReorder *reorder;
9675   gboolean rtl;
9676   GList *tmp_list;
9677   gint left;
9678
9679   /* We want to precalculate the motion list such that we know what column slots
9680    * are available.
9681    */
9682   left_column = NULL;
9683   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9684
9685   /* First, identify all possible drop spots */
9686   if (rtl)
9687     tmp_list = g_list_last (tree_view->priv->columns);
9688   else
9689     tmp_list = g_list_first (tree_view->priv->columns);
9690
9691   while (tmp_list)
9692     {
9693       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9694       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9695
9696       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9697         continue;
9698
9699       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9700       if (left_column != column && cur_column != column &&
9701           tree_view->priv->column_drop_func &&
9702           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9703         {
9704           left_column = cur_column;
9705           continue;
9706         }
9707       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9708       reorder->left_column = left_column;
9709       left_column = reorder->right_column = cur_column;
9710
9711       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9712     }
9713
9714   /* Add the last one */
9715   if (tree_view->priv->column_drop_func == NULL ||
9716       ((left_column != column) &&
9717        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9718     {
9719       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9720       reorder->left_column = left_column;
9721       reorder->right_column = NULL;
9722       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9723     }
9724
9725   /* We quickly check to see if it even makes sense to reorder columns. */
9726   /* If there is nothing that can be moved, then we return */
9727
9728   if (tree_view->priv->column_drag_info == NULL)
9729     return;
9730
9731   /* We know there are always 2 slots possbile, as you can always return column. */
9732   /* If that's all there is, return */
9733   if (tree_view->priv->column_drag_info->next == NULL ||
9734       (tree_view->priv->column_drag_info->next->next == NULL &&
9735        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9736        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9737     {
9738       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9739         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9740       g_list_free (tree_view->priv->column_drag_info);
9741       tree_view->priv->column_drag_info = NULL;
9742       return;
9743     }
9744   /* We fill in the ranges for the columns, now that we've isolated them */
9745   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9746
9747   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9748     {
9749       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9750
9751       reorder->left_align = left;
9752       if (tmp_list->next != NULL)
9753         {
9754           GtkAllocation right_allocation, left_allocation;
9755           GtkWidget    *left_button, *right_button;
9756
9757           g_assert (tmp_list->next->data);
9758
9759           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9760           left_button  = gtk_tree_view_column_get_button
9761             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9762
9763           gtk_widget_get_allocation (right_button, &right_allocation);
9764           gtk_widget_get_allocation (left_button, &left_allocation);
9765           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9766         }
9767       else
9768         {
9769           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9770                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9771         }
9772     }
9773 }
9774
9775 void
9776 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9777                                   GtkTreeViewColumn *column,
9778                                   GdkDevice         *device)
9779 {
9780   GdkEvent *send_event;
9781   GtkAllocation allocation;
9782   GtkAllocation button_allocation;
9783   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9784   GtkWidget *button;
9785   GdkDevice *pointer, *keyboard;
9786
9787   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9788   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9789
9790   gtk_tree_view_set_column_drag_info (tree_view, column);
9791
9792   if (tree_view->priv->column_drag_info == NULL)
9793     return;
9794
9795   button = gtk_tree_view_column_get_button (column);
9796
9797   if (tree_view->priv->drag_window == NULL)
9798     {
9799       GdkWindowAttr attributes;
9800       guint attributes_mask;
9801
9802       gtk_widget_get_allocation (button, &button_allocation);
9803
9804       attributes.window_type = GDK_WINDOW_CHILD;
9805       attributes.wclass = GDK_INPUT_OUTPUT;
9806       attributes.x = button_allocation.x;
9807       attributes.y = 0;
9808       attributes.width = button_allocation.width;
9809       attributes.height = button_allocation.height;
9810       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9811       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9812       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9813
9814       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9815                                                      &attributes,
9816                                                      attributes_mask);
9817       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9818     }
9819
9820   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9821     {
9822       keyboard = device;
9823       pointer = gdk_device_get_associated_device (device);
9824     }
9825   else
9826     {
9827       pointer = device;
9828       keyboard = gdk_device_get_associated_device (device);
9829     }
9830
9831   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9832   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9833
9834   gtk_grab_remove (button);
9835
9836   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9837   send_event->crossing.send_event = TRUE;
9838   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9839   send_event->crossing.subwindow = NULL;
9840   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9841   send_event->crossing.time = GDK_CURRENT_TIME;
9842   gdk_event_set_device (send_event, device);
9843
9844   gtk_propagate_event (button, send_event);
9845   gdk_event_free (send_event);
9846
9847   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9848   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9849   send_event->button.send_event = TRUE;
9850   send_event->button.time = GDK_CURRENT_TIME;
9851   send_event->button.x = -1;
9852   send_event->button.y = -1;
9853   send_event->button.axes = NULL;
9854   send_event->button.state = 0;
9855   send_event->button.button = 1;
9856   send_event->button.x_root = 0;
9857   send_event->button.y_root = 0;
9858   gdk_event_set_device (send_event, device);
9859
9860   gtk_propagate_event (button, send_event);
9861   gdk_event_free (send_event);
9862
9863   /* Kids, don't try this at home */
9864   g_object_ref (button);
9865   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9866   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9867   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9868   g_object_unref (button);
9869
9870   gtk_widget_get_allocation (button, &button_allocation);
9871   tree_view->priv->drag_column_x = button_allocation.x;
9872   allocation = button_allocation;
9873   allocation.x = 0;
9874   gtk_widget_size_allocate (button, &allocation);
9875   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9876
9877   tree_view->priv->drag_column = column;
9878   gdk_window_show (tree_view->priv->drag_window);
9879
9880   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9881   while (gtk_events_pending ())
9882     gtk_main_iteration ();
9883
9884   tree_view->priv->in_column_drag = TRUE;
9885
9886   gdk_device_grab (pointer,
9887                    tree_view->priv->drag_window,
9888                    GDK_OWNERSHIP_NONE,
9889                    FALSE,
9890                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9891                    NULL,
9892                    GDK_CURRENT_TIME);
9893   gdk_device_grab (keyboard,
9894                    tree_view->priv->drag_window,
9895                    GDK_OWNERSHIP_NONE,
9896                    FALSE,
9897                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9898                    NULL,
9899                    GDK_CURRENT_TIME);
9900 }
9901
9902 static void
9903 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9904                                 GtkRBTree          *tree,
9905                                 GtkRBNode          *node)
9906 {
9907   GtkAllocation allocation;
9908   GdkRectangle rect;
9909
9910   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9911     return;
9912
9913   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9914   rect.x = 0;
9915   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9916
9917   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9918   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9919
9920   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9921 }
9922
9923 void
9924 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9925                                 GtkRBTree          *tree,
9926                                 GtkRBNode          *node,
9927                                 const GdkRectangle *clip_rect)
9928 {
9929   GtkAllocation allocation;
9930   GdkRectangle rect;
9931
9932   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9933     return;
9934
9935   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9936   rect.x = 0;
9937   rect.width = MAX (tree_view->priv->width, allocation.width);
9938
9939   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9940   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9941
9942   if (clip_rect)
9943     {
9944       GdkRectangle new_rect;
9945
9946       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9947
9948       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9949     }
9950   else
9951     {
9952       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9953     }
9954 }
9955
9956 static inline gint
9957 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9958 {
9959   if (tree_view->priv->headers_visible)
9960     return tree_view->priv->header_height;
9961   /* else */
9962   return 0;
9963 }
9964
9965 gint
9966 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9967 {
9968   return tree_view->priv->header_height;
9969 }
9970
9971 void
9972 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9973                                        GtkTreeViewRowSeparatorFunc *func,
9974                                        gpointer                    *data)
9975 {
9976   *func = tree_view->priv->row_separator_func;
9977   *data = tree_view->priv->row_separator_data;
9978 }
9979
9980 GtkTreePath *
9981 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9982 {
9983   if (tree_view->priv->anchor)
9984     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9985
9986   return NULL;
9987 }
9988
9989 void
9990 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9991                                 GtkTreePath *anchor_path)
9992 {
9993   if (tree_view->priv->anchor)
9994     {
9995       gtk_tree_row_reference_free (tree_view->priv->anchor);
9996       tree_view->priv->anchor = NULL;
9997     }
9998
9999   if (anchor_path && tree_view->priv->model)
10000     tree_view->priv->anchor =
10001       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10002                                         tree_view->priv->model, anchor_path);
10003 }
10004
10005 GtkRBTree *
10006 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
10007 {
10008   return tree_view->priv->tree;
10009 }
10010
10011 GdkWindow *
10012 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10013 {
10014   return tree_view->priv->header_window;
10015 }
10016
10017 void
10018 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10019                                  GtkTreeViewColumn *column)
10020 {
10021   tree_view->priv->focus_column = column;
10022 }
10023
10024
10025 static void
10026 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10027                                GtkTreePath        *path,
10028                                const GdkRectangle *clip_rect)
10029 {
10030   GtkRBTree *tree = NULL;
10031   GtkRBNode *node = NULL;
10032
10033   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10034
10035   if (tree)
10036     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10037 }
10038
10039 /* x and y are the mouse position
10040  */
10041 static void
10042 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10043                           cairo_t     *cr,
10044                           GtkRBTree   *tree,
10045                           GtkRBNode   *node)
10046 {
10047   GdkRectangle area;
10048   GtkStateFlags state = 0;
10049   GtkStyleContext *context;
10050   GtkWidget *widget;
10051   gint x_offset = 0;
10052   gint x2;
10053   gint vertical_separator;
10054   gint expander_size;
10055   GtkCellRendererState flags;
10056
10057   widget = GTK_WIDGET (tree_view);
10058   context = gtk_widget_get_style_context (widget);
10059
10060   gtk_widget_style_get (widget,
10061                         "vertical-separator", &vertical_separator,
10062                         NULL);
10063   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10064
10065   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10066     return;
10067
10068   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10069
10070   area.x = x_offset;
10071   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10072                                                  vertical_separator);
10073   area.width = expander_size;
10074   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10075                                                     vertical_separator);
10076
10077   if (!gtk_widget_get_sensitive (widget))
10078     state |= GTK_STATE_FLAG_INSENSITIVE;
10079   else
10080     {
10081       flags = 0;
10082
10083       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10084         flags |= GTK_CELL_RENDERER_SELECTED;
10085
10086       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10087
10088       if (node == tree_view->priv->prelight_node &&
10089           tree_view->priv->arrow_prelit)
10090         state |= GTK_STATE_FLAG_PRELIGHT;
10091     }
10092
10093   if (node->children != NULL)
10094     state |= GTK_STATE_FLAG_ACTIVE;
10095
10096   gtk_style_context_save (context);
10097
10098   gtk_style_context_set_state (context, state);
10099   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10100
10101   gtk_style_context_push_animatable_region (context, node);
10102
10103   gtk_render_expander (context, cr,
10104                        area.x, area.y,
10105                        area.width, area.height);
10106
10107   gtk_style_context_pop_animatable_region (context);
10108   gtk_style_context_restore (context);
10109 }
10110
10111 static void
10112 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10113
10114 {
10115   GtkTreePath *cursor_path;
10116
10117   if ((tree_view->priv->tree == NULL) ||
10118       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10119     return;
10120
10121   cursor_path = NULL;
10122   if (tree_view->priv->cursor_node)
10123     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10124                                                   tree_view->priv->cursor_node);
10125
10126   if (cursor_path == NULL)
10127     {
10128       /* Consult the selection before defaulting to the
10129        * first focusable element
10130        */
10131       GList *selected_rows;
10132       GtkTreeModel *model;
10133       GtkTreeSelection *selection;
10134
10135       selection = gtk_tree_view_get_selection (tree_view);
10136       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10137
10138       if (selected_rows)
10139         {
10140           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10141           g_list_free_full (selected_rows, (GDestroyNotify) gtk_tree_path_free);
10142         }
10143       else
10144         {
10145           cursor_path = gtk_tree_path_new_first ();
10146           search_first_focusable_path (tree_view, &cursor_path,
10147                                        TRUE, NULL, NULL);
10148         }
10149
10150       if (cursor_path)
10151         {
10152           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10153             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10154           else
10155             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10156         }
10157     }
10158
10159   if (cursor_path)
10160     {
10161       tree_view->priv->draw_keyfocus = TRUE;
10162
10163       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10164       gtk_tree_path_free (cursor_path);
10165
10166       if (tree_view->priv->focus_column == NULL)
10167         {
10168           GList *list;
10169           for (list = tree_view->priv->columns; list; list = list->next)
10170             {
10171               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10172                 {
10173                   GtkCellArea *cell_area;
10174
10175                   _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
10176
10177                   /* This happens when the treeview initially grabs focus and there
10178                    * is no column in focus, here we explicitly focus into the first cell */
10179                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10180                   if (!gtk_cell_area_get_focus_cell (cell_area))
10181                     {
10182                       gboolean rtl;
10183
10184                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10185                       gtk_cell_area_focus (cell_area,
10186                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10187                     }
10188
10189                   break;
10190                 }
10191             }
10192         }
10193     }
10194 }
10195
10196 static void
10197 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10198                                    gint         count)
10199 {
10200   gint selection_count;
10201   GtkRBTree *new_cursor_tree = NULL;
10202   GtkRBNode *new_cursor_node = NULL;
10203   GtkTreePath *cursor_path = NULL;
10204   gboolean grab_focus = TRUE;
10205   gboolean selectable;
10206   GtkDirectionType direction;
10207   GtkCellArea *cell_area = NULL;
10208   GtkCellRenderer *last_focus_cell = NULL;
10209   GtkTreeIter iter;
10210
10211   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10212     return;
10213
10214   if (tree_view->priv->cursor_node == NULL)
10215     return;
10216
10217   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10218                                                 tree_view->priv->cursor_node);
10219
10220   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10221
10222   if (tree_view->priv->focus_column)
10223     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10224
10225   /* If focus stays in the area for this row, then just return for this round */
10226   if (cell_area && (count == -1 || count == 1) &&
10227       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10228     {
10229       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10230                                                tree_view->priv->model,
10231                                                &iter,
10232                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10233                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10234
10235       /* Save the last cell that had focus, if we hit the end of the view we'll give
10236        * focus back to it. */
10237       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10238
10239       /* If focus stays in the area, no need to change the cursor row */
10240       if (gtk_cell_area_focus (cell_area, direction))
10241         return;
10242     }
10243
10244   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10245   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10246                                                       tree_view->priv->cursor_node,
10247                                                       cursor_path);
10248
10249   if (selection_count == 0
10250       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10251       && !tree_view->priv->modify_selection_pressed
10252       && selectable)
10253     {
10254       /* Don't move the cursor, but just select the current node */
10255       new_cursor_tree = tree_view->priv->cursor_tree;
10256       new_cursor_node = tree_view->priv->cursor_node;
10257     }
10258   else
10259     {
10260       if (count == -1)
10261         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10262                                &new_cursor_tree, &new_cursor_node);
10263       else
10264         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10265                                &new_cursor_tree, &new_cursor_node);
10266     }
10267
10268   gtk_tree_path_free (cursor_path);
10269
10270   if (new_cursor_node)
10271     {
10272       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10273
10274       search_first_focusable_path (tree_view, &cursor_path,
10275                                    (count != -1),
10276                                    &new_cursor_tree,
10277                                    &new_cursor_node);
10278
10279       if (cursor_path)
10280         gtk_tree_path_free (cursor_path);
10281     }
10282
10283   /*
10284    * If the list has only one item and multi-selection is set then select
10285    * the row (if not yet selected).
10286    */
10287   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10288       new_cursor_node == NULL)
10289     {
10290       if (count == -1)
10291         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10292                                &new_cursor_tree, &new_cursor_node);
10293       else
10294         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10295                                &new_cursor_tree, &new_cursor_node);
10296
10297       if (new_cursor_node == NULL
10298           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10299         {
10300           new_cursor_node = tree_view->priv->cursor_node;
10301           new_cursor_tree = tree_view->priv->cursor_tree;
10302         }
10303       else
10304         {
10305           new_cursor_tree = NULL;
10306           new_cursor_node = NULL;
10307         }
10308     }
10309
10310   if (new_cursor_node)
10311     {
10312       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10313       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10314       gtk_tree_path_free (cursor_path);
10315
10316       /* Give focus to the area in the new row */
10317       if (cell_area)
10318         gtk_cell_area_focus (cell_area, direction);
10319     }
10320   else
10321     {
10322       gtk_tree_view_clamp_node_visible (tree_view,
10323                                         tree_view->priv->cursor_tree,
10324                                         tree_view->priv->cursor_node);
10325
10326       if (!tree_view->priv->extend_selection_pressed)
10327         {
10328           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10329                                           count < 0 ?
10330                                           GTK_DIR_UP : GTK_DIR_DOWN))
10331             {
10332               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10333
10334               if (toplevel)
10335                 gtk_widget_child_focus (toplevel,
10336                                         count < 0 ?
10337                                         GTK_DIR_TAB_BACKWARD :
10338                                         GTK_DIR_TAB_FORWARD);
10339
10340               grab_focus = FALSE;
10341             }
10342         }
10343       else
10344         {
10345           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10346         }
10347
10348       if (cell_area)
10349         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10350     }
10351
10352   if (grab_focus)
10353     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10354 }
10355
10356 static void
10357 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10358                                         gint         count)
10359 {
10360   GtkTreePath *old_cursor_path = NULL;
10361   GtkTreePath *cursor_path = NULL;
10362   GtkRBTree *start_cursor_tree = NULL;
10363   GtkRBNode *start_cursor_node = NULL;
10364   GtkRBTree *cursor_tree;
10365   GtkRBNode *cursor_node;
10366   gint y;
10367   gint window_y;
10368   gint vertical_separator;
10369
10370   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10371     return;
10372
10373   if (tree_view->priv->cursor_node == NULL)
10374     return;
10375
10376   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10377                                                     tree_view->priv->cursor_node);
10378
10379   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10380
10381   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10382   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10383   y += tree_view->priv->cursor_offset;
10384   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10385   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10386
10387   if (y >= tree_view->priv->height)
10388     y = tree_view->priv->height - 1;
10389
10390   tree_view->priv->cursor_offset =
10391     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10392                              &cursor_tree, &cursor_node);
10393
10394   if (cursor_tree == NULL)
10395     {
10396       /* FIXME: we lost the cursor.  Should we try to get one? */
10397       gtk_tree_path_free (old_cursor_path);
10398       return;
10399     }
10400
10401   if (tree_view->priv->cursor_offset
10402       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10403     {
10404       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10405                              &cursor_tree, &cursor_node);
10406       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10407     }
10408
10409   y -= tree_view->priv->cursor_offset;
10410   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10411
10412   start_cursor_tree = cursor_tree;
10413   start_cursor_node = cursor_node;
10414
10415   if (! search_first_focusable_path (tree_view, &cursor_path,
10416                                      (count != -1),
10417                                      &cursor_tree, &cursor_node))
10418     {
10419       /* It looks like we reached the end of the view without finding
10420        * a focusable row.  We will step backwards to find the last
10421        * focusable row.
10422        */
10423       cursor_tree = start_cursor_tree;
10424       cursor_node = start_cursor_node;
10425       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10426
10427       search_first_focusable_path (tree_view, &cursor_path,
10428                                    (count == -1),
10429                                    &cursor_tree, &cursor_node);
10430     }
10431
10432   if (!cursor_path)
10433     goto cleanup;
10434
10435   /* update y */
10436   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10437
10438   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10439
10440   y -= window_y;
10441   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10442   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10443   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10444
10445   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10446     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10447
10448   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10449
10450 cleanup:
10451   gtk_tree_path_free (old_cursor_path);
10452   gtk_tree_path_free (cursor_path);
10453 }
10454
10455 static void
10456 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10457                                       gint         count)
10458 {
10459   GtkTreePath *cursor_path = NULL;
10460   GtkTreeViewColumn *column;
10461   GtkTreeIter iter;
10462   GList *list;
10463   gboolean found_column = FALSE;
10464   gboolean rtl;
10465   GtkDirectionType direction;
10466   GtkCellArea     *cell_area;
10467   GtkCellRenderer *last_focus_cell = NULL;
10468   GtkCellArea     *last_focus_area = NULL;
10469
10470   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10471
10472   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10473     return;
10474
10475   if (tree_view->priv->cursor_node == NULL)
10476     return;
10477
10478   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10479                                                 tree_view->priv->cursor_node);
10480
10481   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10482     {
10483       gtk_tree_path_free (cursor_path);
10484       return;
10485     }
10486   gtk_tree_path_free (cursor_path);
10487
10488   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10489   if (tree_view->priv->focus_column)
10490     {
10491       /* Save the cell/area we are moving focus from, if moving the cursor
10492        * by one step hits the end we'll set focus back here */
10493       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10494       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10495
10496       for (; list; list = (rtl ? list->prev : list->next))
10497         {
10498           if (list->data == tree_view->priv->focus_column)
10499             break;
10500         }
10501     }
10502
10503   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10504
10505   while (list)
10506     {
10507       column = list->data;
10508       if (gtk_tree_view_column_get_visible (column) == FALSE)
10509         goto loop_end;
10510
10511       gtk_tree_view_column_cell_set_cell_data (column,
10512                                                tree_view->priv->model,
10513                                                &iter,
10514                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10515                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10516
10517       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10518       if (gtk_cell_area_focus (cell_area, direction))
10519         {
10520           _gtk_tree_view_set_focus_column (tree_view, column);
10521           found_column = TRUE;
10522           break;
10523         }
10524
10525     loop_end:
10526       if (count == 1)
10527         list = rtl ? list->prev : list->next;
10528       else
10529         list = rtl ? list->next : list->prev;
10530     }
10531
10532   if (found_column)
10533     {
10534       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10535         _gtk_tree_view_queue_draw_node (tree_view,
10536                                         tree_view->priv->cursor_tree,
10537                                         tree_view->priv->cursor_node,
10538                                         NULL);
10539       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10540       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10541     }
10542   else
10543     {
10544       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10545
10546       if (last_focus_area)
10547         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10548     }
10549
10550   gtk_tree_view_clamp_column_visible (tree_view,
10551                                       tree_view->priv->focus_column, TRUE);
10552 }
10553
10554 static void
10555 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10556                                      gint         count)
10557 {
10558   GtkRBTree *cursor_tree;
10559   GtkRBNode *cursor_node;
10560   GtkTreePath *path;
10561   GtkTreePath *old_path;
10562
10563   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10564     return;
10565
10566   g_return_if_fail (tree_view->priv->tree != NULL);
10567
10568   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10569
10570   cursor_tree = tree_view->priv->tree;
10571
10572   if (count == -1)
10573     {
10574       cursor_node = _gtk_rbtree_first (cursor_tree);
10575
10576       /* Now go forward to find the first focusable row. */
10577       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10578       search_first_focusable_path (tree_view, &path,
10579                                    TRUE, &cursor_tree, &cursor_node);
10580     }
10581   else
10582     {
10583       cursor_node = cursor_tree->root;
10584
10585       do
10586         {
10587           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10588             cursor_node = cursor_node->right;
10589           if (cursor_node->children == NULL)
10590             break;
10591
10592           cursor_tree = cursor_node->children;
10593           cursor_node = cursor_tree->root;
10594         }
10595       while (1);
10596
10597       /* Now go backwards to find last focusable row. */
10598       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10599       search_first_focusable_path (tree_view, &path,
10600                                    FALSE, &cursor_tree, &cursor_node);
10601     }
10602
10603   if (!path)
10604     goto cleanup;
10605
10606   if (gtk_tree_path_compare (old_path, path))
10607     {
10608       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10609       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10610     }
10611   else
10612     {
10613       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10614     }
10615
10616 cleanup:
10617   gtk_tree_path_free (old_path);
10618   gtk_tree_path_free (path);
10619 }
10620
10621 static gboolean
10622 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10623 {
10624   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10625     return FALSE;
10626
10627   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10628     return FALSE;
10629
10630   gtk_tree_selection_select_all (tree_view->priv->selection);
10631
10632   return TRUE;
10633 }
10634
10635 static gboolean
10636 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10637 {
10638   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10639     return FALSE;
10640
10641   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10642     return FALSE;
10643
10644   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10645
10646   return TRUE;
10647 }
10648
10649 static gboolean
10650 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10651                                       gboolean     start_editing)
10652 {
10653   GtkRBTree *new_tree = NULL;
10654   GtkRBNode *new_node = NULL;
10655   GtkRBTree *cursor_tree = NULL;
10656   GtkRBNode *cursor_node = NULL;
10657   GtkTreePath *cursor_path = NULL;
10658   GtkTreeSelectMode mode = 0;
10659
10660   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10661     return FALSE;
10662
10663   if (tree_view->priv->cursor_node == NULL)
10664     return FALSE;
10665
10666   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10667                                                 tree_view->priv->cursor_node);
10668
10669   _gtk_tree_view_find_node (tree_view, cursor_path,
10670                             &cursor_tree, &cursor_node);
10671
10672   if (cursor_tree == NULL)
10673     {
10674       gtk_tree_path_free (cursor_path);
10675       return FALSE;
10676     }
10677
10678   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10679       tree_view->priv->focus_column)
10680     {
10681       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10682         {
10683           gtk_tree_path_free (cursor_path);
10684           return TRUE;
10685         }
10686     }
10687
10688   if (tree_view->priv->modify_selection_pressed)
10689     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10690   if (tree_view->priv->extend_selection_pressed)
10691     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10692
10693   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10694                                             cursor_node,
10695                                             cursor_tree,
10696                                             cursor_path,
10697                                             mode,
10698                                             FALSE);
10699
10700   /* We bail out if the original (tree, node) don't exist anymore after
10701    * handling the selection-changed callback.  We do return TRUE because
10702    * the key press has been handled at this point.
10703    */
10704   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10705
10706   if (cursor_tree != new_tree || cursor_node != new_node)
10707     return FALSE;
10708
10709   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10710
10711   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10712   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10713
10714   if (!tree_view->priv->extend_selection_pressed)
10715     gtk_tree_view_row_activated (tree_view, cursor_path,
10716                                  tree_view->priv->focus_column);
10717
10718   gtk_tree_path_free (cursor_path);
10719
10720   return TRUE;
10721 }
10722
10723 static gboolean
10724 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10725 {
10726   GtkRBTree *new_tree = NULL;
10727   GtkRBNode *new_node = NULL;
10728   GtkTreePath *cursor_path = NULL;
10729
10730   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10731     return FALSE;
10732
10733   if (tree_view->priv->cursor_node == NULL)
10734     return FALSE;
10735
10736   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10737                                                 tree_view->priv->cursor_node);
10738
10739   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10740                                             tree_view->priv->cursor_node,
10741                                             tree_view->priv->cursor_tree,
10742                                             cursor_path,
10743                                             GTK_TREE_SELECT_MODE_TOGGLE,
10744                                             FALSE);
10745
10746   /* We bail out if the original (tree, node) don't exist anymore after
10747    * handling the selection-changed callback.  We do return TRUE because
10748    * the key press has been handled at this point.
10749    */
10750   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10751
10752   if (tree_view->priv->cursor_node != new_node)
10753     return FALSE;
10754
10755   gtk_tree_view_clamp_node_visible (tree_view,
10756                                     tree_view->priv->cursor_tree,
10757                                     tree_view->priv->cursor_node);
10758
10759   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10760   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10761   gtk_tree_path_free (cursor_path);
10762
10763   return TRUE;
10764 }
10765
10766 static gboolean
10767 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10768                                                gboolean     logical,
10769                                                gboolean     expand,
10770                                                gboolean     open_all)
10771 {
10772   GtkTreePath *cursor_path = NULL;
10773
10774   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10775     return FALSE;
10776
10777   if (tree_view->priv->cursor_node == NULL)
10778     return FALSE;
10779
10780   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10781                                                 tree_view->priv->cursor_node);
10782
10783   /* Don't handle the event if we aren't an expander */
10784   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10785     return FALSE;
10786
10787   if (!logical
10788       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10789     expand = !expand;
10790
10791   if (expand)
10792     gtk_tree_view_real_expand_row (tree_view,
10793                                    cursor_path,
10794                                    tree_view->priv->cursor_tree,
10795                                    tree_view->priv->cursor_node,
10796                                    open_all,
10797                                    TRUE);
10798   else
10799     gtk_tree_view_real_collapse_row (tree_view,
10800                                      cursor_path,
10801                                      tree_view->priv->cursor_tree,
10802                                      tree_view->priv->cursor_node,
10803                                      TRUE);
10804
10805   gtk_tree_path_free (cursor_path);
10806
10807   return TRUE;
10808 }
10809
10810 static gboolean
10811 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10812 {
10813   GtkTreePath *cursor_path = NULL;
10814   GdkModifierType state;
10815
10816   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10817     goto out;
10818
10819   if (tree_view->priv->cursor_node == NULL)
10820     goto out;
10821
10822   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10823                                                 tree_view->priv->cursor_node);
10824
10825   if (tree_view->priv->cursor_tree->parent_node)
10826     {
10827       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10828
10829       gtk_tree_path_up (cursor_path);
10830
10831       if (gtk_get_current_event_state (&state))
10832         {
10833           GdkModifierType modify_mod_mask;
10834
10835           modify_mod_mask =
10836             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10837                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10838
10839           if ((state & modify_mod_mask) == modify_mod_mask)
10840             tree_view->priv->modify_selection_pressed = TRUE;
10841         }
10842
10843       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10844       gtk_tree_path_free (cursor_path);
10845
10846       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10847
10848       tree_view->priv->modify_selection_pressed = FALSE;
10849
10850       return TRUE;
10851     }
10852
10853  out:
10854
10855   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10856   return FALSE;
10857 }
10858
10859 static gboolean
10860 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10861 {
10862   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10863   tree_view->priv->typeselect_flush_timeout = 0;
10864
10865   return FALSE;
10866 }
10867
10868 /* Cut and paste from gtkwindow.c */
10869 static void
10870 send_focus_change (GtkWidget *widget,
10871                    GdkDevice *device,
10872                    gboolean   in)
10873 {
10874   GdkDeviceManager *device_manager;
10875   GList *devices, *d;
10876
10877   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10878   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10879   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10880   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10881
10882   for (d = devices; d; d = d->next)
10883     {
10884       GdkDevice *dev = d->data;
10885       GdkEvent *fevent;
10886       GdkWindow *window;
10887
10888       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10889         continue;
10890
10891       window = gtk_widget_get_window (widget);
10892
10893       /* Skip non-master keyboards that haven't
10894        * selected for events from this window
10895        */
10896       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10897           !gdk_window_get_device_events (window, dev))
10898         continue;
10899
10900       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10901
10902       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10903       fevent->focus_change.window = g_object_ref (window);
10904       fevent->focus_change.in = in;
10905       gdk_event_set_device (fevent, device);
10906
10907       gtk_widget_send_focus_change (widget, fevent);
10908
10909       gdk_event_free (fevent);
10910     }
10911
10912   g_list_free (devices);
10913 }
10914
10915 static void
10916 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10917 {
10918   GtkWidget *frame, *vbox, *toplevel;
10919   GdkScreen *screen;
10920
10921   if (tree_view->priv->search_custom_entry_set)
10922     return;
10923
10924   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10925   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10926
10927    if (tree_view->priv->search_window != NULL)
10928      {
10929        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10930          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10931                                       GTK_WINDOW (tree_view->priv->search_window));
10932        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10933          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10934                                          GTK_WINDOW (tree_view->priv->search_window));
10935
10936        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10937
10938        return;
10939      }
10940
10941   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10942   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10943
10944   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10945     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10946                                  GTK_WINDOW (tree_view->priv->search_window));
10947
10948   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10949                             GDK_WINDOW_TYPE_HINT_UTILITY);
10950   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10951   g_signal_connect (tree_view->priv->search_window, "delete-event",
10952                     G_CALLBACK (gtk_tree_view_search_delete_event),
10953                     tree_view);
10954   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10955                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10956                     tree_view);
10957   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10958                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10959                     tree_view);
10960   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10961                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10962                     tree_view);
10963
10964   frame = gtk_frame_new (NULL);
10965   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10966   gtk_widget_show (frame);
10967   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10968
10969   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10970   gtk_widget_show (vbox);
10971   gtk_container_add (GTK_CONTAINER (frame), vbox);
10972   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10973
10974   /* add entry */
10975   tree_view->priv->search_entry = gtk_entry_new ();
10976   gtk_widget_show (tree_view->priv->search_entry);
10977   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10978                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10979                     tree_view);
10980   g_signal_connect (tree_view->priv->search_entry,
10981                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10982                     tree_view);
10983
10984   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10985                     "preedit-changed",
10986                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10987                     tree_view);
10988
10989   gtk_container_add (GTK_CONTAINER (vbox),
10990                      tree_view->priv->search_entry);
10991
10992   gtk_widget_realize (tree_view->priv->search_entry);
10993 }
10994
10995 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10996  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10997  */
10998 static gboolean
10999 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11000                                              GdkDevice   *device,
11001                                              gboolean     keybinding)
11002 {
11003   /* We only start interactive search if we have focus or the columns
11004    * have focus.  If one of our children have focus, we don't want to
11005    * start the search.
11006    */
11007   GList *list;
11008   gboolean found_focus = FALSE;
11009   GtkWidgetClass *entry_parent_class;
11010
11011   if (!tree_view->priv->enable_search && !keybinding)
11012     return FALSE;
11013
11014   if (tree_view->priv->search_custom_entry_set)
11015     return FALSE;
11016
11017   if (tree_view->priv->search_window != NULL &&
11018       gtk_widget_get_visible (tree_view->priv->search_window))
11019     return TRUE;
11020
11021   for (list = tree_view->priv->columns; list; list = list->next)
11022     {
11023       GtkTreeViewColumn *column;
11024       GtkWidget         *button;
11025
11026       column = list->data;
11027       if (!gtk_tree_view_column_get_visible (column))
11028         continue;
11029
11030       button = gtk_tree_view_column_get_button (column);
11031       if (gtk_widget_has_focus (button))
11032         {
11033           found_focus = TRUE;
11034           break;
11035         }
11036     }
11037
11038   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11039     found_focus = TRUE;
11040
11041   if (!found_focus)
11042     return FALSE;
11043
11044   if (tree_view->priv->search_column < 0)
11045     return FALSE;
11046
11047   gtk_tree_view_ensure_interactive_directory (tree_view);
11048
11049   if (keybinding)
11050     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11051
11052   /* done, show it */
11053   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11054   gtk_widget_show (tree_view->priv->search_window);
11055   if (tree_view->priv->search_entry_changed_id == 0)
11056     {
11057       tree_view->priv->search_entry_changed_id =
11058         g_signal_connect (tree_view->priv->search_entry, "changed",
11059                           G_CALLBACK (gtk_tree_view_search_init),
11060                           tree_view);
11061     }
11062
11063   tree_view->priv->typeselect_flush_timeout =
11064     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11065                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11066                    tree_view);
11067
11068   /* Grab focus will select all the text.  We don't want that to happen, so we
11069    * call the parent instance and bypass the selection change.  This is probably
11070    * really non-kosher. */
11071   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11072   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11073
11074   /* send focus-in event */
11075   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11076
11077   /* search first matching iter */
11078   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11079
11080   return TRUE;
11081 }
11082
11083 static gboolean
11084 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11085 {
11086   return gtk_tree_view_real_start_interactive_search (tree_view,
11087                                                       gtk_get_current_event_device (),
11088                                                       TRUE);
11089 }
11090
11091 /* this function returns the new width of the column being resized given
11092  * the column and x position of the cursor; the x cursor position is passed
11093  * in as a pointer and automagicly corrected if it's beyond min/max limits
11094  */
11095 static gint
11096 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11097                                 gint       i,
11098                                 gint      *x)
11099 {
11100   GtkAllocation allocation;
11101   GtkTreeViewColumn *column;
11102   GtkRequisition button_req;
11103   gint max_width, min_width;
11104   gint width;
11105   gboolean rtl;
11106
11107   /* first translate the x position from widget->window
11108    * to clist->clist_window
11109    */
11110   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11111   column = g_list_nth (tree_view->priv->columns, i)->data;
11112   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11113   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11114
11115   /* Clamp down the value */
11116   min_width = gtk_tree_view_column_get_min_width (column);
11117   if (min_width == -1)
11118     {
11119       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11120       width = MAX (button_req.width, width);
11121     }
11122   else
11123     width = MAX (min_width, width);
11124
11125   max_width = gtk_tree_view_column_get_max_width (column);
11126   if (max_width != -1)
11127     width = MIN (width, max_width);
11128
11129   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11130
11131   return width;
11132 }
11133
11134
11135 /* FIXME this adjust_allocation is a big cut-and-paste from
11136  * GtkCList, needs to be some "official" way to do this
11137  * factored out.
11138  */
11139 typedef struct
11140 {
11141   GdkWindow *window;
11142   int dx;
11143   int dy;
11144 } ScrollData;
11145
11146 /* The window to which widget->window is relative */
11147 #define ALLOCATION_WINDOW(widget)               \
11148    (!gtk_widget_get_has_window (widget) ?                   \
11149     gtk_widget_get_window (widget) :                        \
11150     gdk_window_get_parent (gtk_widget_get_window (widget)))
11151
11152 static void
11153 adjust_allocation_recurse (GtkWidget *widget,
11154                            gpointer   data)
11155 {
11156   GtkAllocation allocation;
11157   ScrollData *scroll_data = data;
11158
11159   /* Need to really size allocate instead of just poking
11160    * into widget->allocation if the widget is not realized.
11161    * FIXME someone figure out why this was.
11162    */
11163   gtk_widget_get_allocation (widget, &allocation);
11164   if (!gtk_widget_get_realized (widget))
11165     {
11166       if (gtk_widget_get_visible (widget))
11167         {
11168           GdkRectangle tmp_rectangle = allocation;
11169           tmp_rectangle.x += scroll_data->dx;
11170           tmp_rectangle.y += scroll_data->dy;
11171
11172           gtk_widget_size_allocate (widget, &tmp_rectangle);
11173         }
11174     }
11175   else
11176     {
11177       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11178         {
11179           allocation.x += scroll_data->dx;
11180           allocation.y += scroll_data->dy;
11181           gtk_widget_set_allocation (widget, &allocation);
11182
11183           if (GTK_IS_CONTAINER (widget))
11184             gtk_container_forall (GTK_CONTAINER (widget),
11185                                   adjust_allocation_recurse,
11186                                   data);
11187         }
11188     }
11189 }
11190
11191 static void
11192 adjust_allocation (GtkWidget *widget,
11193                    int        dx,
11194                    int        dy)
11195 {
11196   ScrollData scroll_data;
11197
11198   if (gtk_widget_get_realized (widget))
11199     scroll_data.window = ALLOCATION_WINDOW (widget);
11200   else
11201     scroll_data.window = NULL;
11202
11203   scroll_data.dx = dx;
11204   scroll_data.dy = dy;
11205
11206   adjust_allocation_recurse (widget, &scroll_data);
11207 }
11208
11209 /* Callbacks */
11210 static void
11211 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11212                                   GtkTreeView   *tree_view)
11213 {
11214   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11215     {
11216       GtkStyleContext *context;
11217       gint dy;
11218
11219       gdk_window_move (tree_view->priv->bin_window,
11220                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11221                        gtk_tree_view_get_effective_header_height (tree_view));
11222       gdk_window_move (tree_view->priv->header_window,
11223                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11224                        0);
11225       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11226       if (dy)
11227         {
11228           update_prelight (tree_view,
11229                            tree_view->priv->event_last_x,
11230                            tree_view->priv->event_last_y - dy);
11231
11232           if (tree_view->priv->edited_column)
11233             {
11234               GList *list;
11235               GtkTreeViewChild *child = NULL;
11236               GtkCellEditable *edit_widget;
11237               GtkCellArea *area;
11238
11239               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11240               edit_widget = gtk_cell_area_get_edit_widget (area);
11241               if (GTK_IS_WIDGET (edit_widget))
11242                 {
11243                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11244
11245                   for (list = tree_view->priv->children; list; list = list->next)
11246                     {
11247                       child = (GtkTreeViewChild *)list->data;
11248                       if (child->widget == GTK_WIDGET (edit_widget))
11249                         {
11250                           child->y += dy;
11251                           break;
11252                         }
11253                     }
11254                 }
11255             }
11256         }
11257       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11258
11259       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11260       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11261
11262       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11263         {
11264           /* update our dy and top_row */
11265           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11266
11267           if (!tree_view->priv->in_top_row_to_dy)
11268             gtk_tree_view_dy_to_top_row (tree_view);
11269         }
11270
11271       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11272       gtk_tree_view_bin_process_updates (tree_view);
11273     }
11274 }
11275
11276 \f
11277
11278 /* Public methods
11279  */
11280
11281 /**
11282  * gtk_tree_view_new:
11283  *
11284  * Creates a new #GtkTreeView widget.
11285  *
11286  * Return value: A newly created #GtkTreeView widget.
11287  **/
11288 GtkWidget *
11289 gtk_tree_view_new (void)
11290 {
11291   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11292 }
11293
11294 /**
11295  * gtk_tree_view_new_with_model:
11296  * @model: the model.
11297  *
11298  * Creates a new #GtkTreeView widget with the model initialized to @model.
11299  *
11300  * Return value: A newly created #GtkTreeView widget.
11301  **/
11302 GtkWidget *
11303 gtk_tree_view_new_with_model (GtkTreeModel *model)
11304 {
11305   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11306 }
11307
11308 /* Public Accessors
11309  */
11310
11311 /**
11312  * gtk_tree_view_get_model:
11313  * @tree_view: a #GtkTreeView
11314  *
11315  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11316  * model is unset.
11317  *
11318  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11319  **/
11320 GtkTreeModel *
11321 gtk_tree_view_get_model (GtkTreeView *tree_view)
11322 {
11323   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11324
11325   return tree_view->priv->model;
11326 }
11327
11328 /**
11329  * gtk_tree_view_set_model:
11330  * @tree_view: A #GtkTreeNode.
11331  * @model: (allow-none): The model.
11332  *
11333  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11334  * set, it will remove it before setting the new model.  If @model is %NULL,
11335  * then it will unset the old model.
11336  **/
11337 void
11338 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11339                          GtkTreeModel *model)
11340 {
11341   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11342   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11343
11344   if (model == tree_view->priv->model)
11345     return;
11346
11347   if (tree_view->priv->scroll_to_path)
11348     {
11349       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11350       tree_view->priv->scroll_to_path = NULL;
11351     }
11352
11353   if (tree_view->priv->rubber_band_status)
11354     gtk_tree_view_stop_rubber_band (tree_view);
11355
11356   if (tree_view->priv->model)
11357     {
11358       GList *tmplist = tree_view->priv->columns;
11359       GtkStyleContext *context;
11360
11361       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11362       gtk_tree_view_stop_editing (tree_view, TRUE);
11363
11364       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11365       gtk_style_context_cancel_animations (context, NULL);
11366
11367       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11368                                             gtk_tree_view_row_changed,
11369                                             tree_view);
11370       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11371                                             gtk_tree_view_row_inserted,
11372                                             tree_view);
11373       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11374                                             gtk_tree_view_row_has_child_toggled,
11375                                             tree_view);
11376       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11377                                             gtk_tree_view_row_deleted,
11378                                             tree_view);
11379       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11380                                             gtk_tree_view_rows_reordered,
11381                                             tree_view);
11382
11383       for (; tmplist; tmplist = tmplist->next)
11384         _gtk_tree_view_column_unset_model (tmplist->data,
11385                                            tree_view->priv->model);
11386
11387       if (tree_view->priv->tree)
11388         gtk_tree_view_free_rbtree (tree_view);
11389
11390       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11391       tree_view->priv->drag_dest_row = NULL;
11392       gtk_tree_row_reference_free (tree_view->priv->anchor);
11393       tree_view->priv->anchor = NULL;
11394       gtk_tree_row_reference_free (tree_view->priv->top_row);
11395       tree_view->priv->top_row = NULL;
11396       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11397       tree_view->priv->scroll_to_path = NULL;
11398
11399       tree_view->priv->scroll_to_column = NULL;
11400
11401       g_object_unref (tree_view->priv->model);
11402
11403       tree_view->priv->search_column = -1;
11404       tree_view->priv->fixed_height_check = 0;
11405       tree_view->priv->fixed_height = -1;
11406       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11407       tree_view->priv->last_button_x = -1;
11408       tree_view->priv->last_button_y = -1;
11409     }
11410
11411   tree_view->priv->model = model;
11412
11413   if (tree_view->priv->model)
11414     {
11415       gint i;
11416       GtkTreePath *path;
11417       GtkTreeIter iter;
11418       GtkTreeModelFlags flags;
11419
11420       if (tree_view->priv->search_column == -1)
11421         {
11422           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11423             {
11424               GType type = gtk_tree_model_get_column_type (model, i);
11425
11426               if (g_value_type_transformable (type, G_TYPE_STRING))
11427                 {
11428                   tree_view->priv->search_column = i;
11429                   break;
11430                 }
11431             }
11432         }
11433
11434       g_object_ref (tree_view->priv->model);
11435       g_signal_connect (tree_view->priv->model,
11436                         "row-changed",
11437                         G_CALLBACK (gtk_tree_view_row_changed),
11438                         tree_view);
11439       g_signal_connect (tree_view->priv->model,
11440                         "row-inserted",
11441                         G_CALLBACK (gtk_tree_view_row_inserted),
11442                         tree_view);
11443       g_signal_connect (tree_view->priv->model,
11444                         "row-has-child-toggled",
11445                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11446                         tree_view);
11447       g_signal_connect (tree_view->priv->model,
11448                         "row-deleted",
11449                         G_CALLBACK (gtk_tree_view_row_deleted),
11450                         tree_view);
11451       g_signal_connect (tree_view->priv->model,
11452                         "rows-reordered",
11453                         G_CALLBACK (gtk_tree_view_rows_reordered),
11454                         tree_view);
11455
11456       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11457       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11458         tree_view->priv->is_list = TRUE;
11459       else
11460         tree_view->priv->is_list = FALSE;
11461
11462       path = gtk_tree_path_new_first ();
11463       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11464         {
11465           tree_view->priv->tree = _gtk_rbtree_new ();
11466           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11467           _gtk_tree_view_accessible_add (tree_view, tree_view->priv->tree, NULL);
11468         }
11469
11470       if (search_first_focusable_path (tree_view, &path, TRUE, NULL, NULL))
11471         {
11472           gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
11473           gtk_tree_path_free (path);
11474         }
11475       else
11476         gtk_tree_view_real_set_cursor (tree_view, NULL, CURSOR_INVALID);
11477
11478       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11479       install_presize_handler (tree_view);
11480     }
11481   else
11482     gtk_tree_view_real_set_cursor (tree_view, NULL, CURSOR_INVALID);
11483
11484   g_object_notify (G_OBJECT (tree_view), "model");
11485
11486   if (tree_view->priv->selection)
11487   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11488
11489   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11490     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11491 }
11492
11493 /**
11494  * gtk_tree_view_get_selection:
11495  * @tree_view: A #GtkTreeView.
11496  *
11497  * Gets the #GtkTreeSelection associated with @tree_view.
11498  *
11499  * Return value: (transfer none): A #GtkTreeSelection object.
11500  **/
11501 GtkTreeSelection *
11502 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11503 {
11504   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11505
11506   return tree_view->priv->selection;
11507 }
11508
11509 /**
11510  * gtk_tree_view_get_hadjustment:
11511  * @tree_view: A #GtkTreeView
11512  *
11513  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11514  *
11515  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11516  *     if none is currently being used.
11517  *
11518  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11519  **/
11520 GtkAdjustment *
11521 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11522 {
11523   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11524
11525   return gtk_tree_view_do_get_hadjustment (tree_view);
11526 }
11527
11528 static GtkAdjustment *
11529 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11530 {
11531   return tree_view->priv->hadjustment;
11532 }
11533
11534 /**
11535  * gtk_tree_view_set_hadjustment:
11536  * @tree_view: A #GtkTreeView
11537  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11538  *
11539  * Sets the #GtkAdjustment for the current horizontal aspect.
11540  *
11541  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11542  **/
11543 void
11544 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11545                                GtkAdjustment *adjustment)
11546 {
11547   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11548   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11549
11550   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11551 }
11552
11553 static void
11554 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11555                                   GtkAdjustment *adjustment)
11556 {
11557   GtkTreeViewPrivate *priv = tree_view->priv;
11558
11559   if (adjustment && priv->hadjustment == adjustment)
11560     return;
11561
11562   if (priv->hadjustment != NULL)
11563     {
11564       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11565                                             gtk_tree_view_adjustment_changed,
11566                                             tree_view);
11567       g_object_unref (priv->hadjustment);
11568     }
11569
11570   if (adjustment == NULL)
11571     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11572                                      0.0, 0.0, 0.0);
11573
11574   g_signal_connect (adjustment, "value-changed",
11575                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11576   priv->hadjustment = g_object_ref_sink (adjustment);
11577   /* FIXME: Adjustment should probably be populated here with fresh values, but
11578    * internal details are too complicated for me to decipher right now.
11579    */
11580   gtk_tree_view_adjustment_changed (NULL, tree_view);
11581
11582   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11583 }
11584
11585 /**
11586  * gtk_tree_view_get_vadjustment:
11587  * @tree_view: A #GtkTreeView
11588  *
11589  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11590  *
11591  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11592  *     if none is currently being used.
11593  *
11594  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11595  **/
11596 GtkAdjustment *
11597 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11598 {
11599   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11600
11601   return gtk_tree_view_do_get_vadjustment (tree_view);
11602 }
11603
11604 static GtkAdjustment *
11605 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11606 {
11607   return tree_view->priv->vadjustment;
11608 }
11609
11610 /**
11611  * gtk_tree_view_set_vadjustment:
11612  * @tree_view: A #GtkTreeView
11613  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11614  *
11615  * Sets the #GtkAdjustment for the current vertical aspect.
11616  *
11617  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11618  **/
11619 void
11620 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11621                                GtkAdjustment *adjustment)
11622 {
11623   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11624   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11625
11626   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11627 }
11628
11629 static void
11630 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11631                                   GtkAdjustment *adjustment)
11632 {
11633   GtkTreeViewPrivate *priv = tree_view->priv;
11634
11635   if (adjustment && priv->vadjustment == adjustment)
11636     return;
11637
11638   if (priv->vadjustment != NULL)
11639     {
11640       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11641                                             gtk_tree_view_adjustment_changed,
11642                                             tree_view);
11643       g_object_unref (priv->vadjustment);
11644     }
11645
11646   if (adjustment == NULL)
11647     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11648                                      0.0, 0.0, 0.0);
11649
11650   g_signal_connect (adjustment, "value-changed",
11651                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11652   priv->vadjustment = g_object_ref_sink (adjustment);
11653   /* FIXME: Adjustment should probably be populated here with fresh values, but
11654    * internal details are too complicated for me to decipher right now.
11655    */
11656   gtk_tree_view_adjustment_changed (NULL, tree_view);
11657   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11658 }
11659
11660 /* Column and header operations */
11661
11662 /**
11663  * gtk_tree_view_get_headers_visible:
11664  * @tree_view: A #GtkTreeView.
11665  *
11666  * Returns %TRUE if the headers on the @tree_view are visible.
11667  *
11668  * Return value: Whether the headers are visible or not.
11669  **/
11670 gboolean
11671 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11672 {
11673   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11674
11675   return tree_view->priv->headers_visible;
11676 }
11677
11678 /**
11679  * gtk_tree_view_set_headers_visible:
11680  * @tree_view: A #GtkTreeView.
11681  * @headers_visible: %TRUE if the headers are visible
11682  *
11683  * Sets the visibility state of the headers.
11684  **/
11685 void
11686 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11687                                    gboolean     headers_visible)
11688 {
11689   gint x, y;
11690   GList *list;
11691   GtkTreeViewColumn *column;
11692   GtkAllocation allocation;
11693   GtkWidget *button;
11694
11695   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11696
11697   headers_visible = !! headers_visible;
11698
11699   if (tree_view->priv->headers_visible == headers_visible)
11700     return;
11701
11702   tree_view->priv->headers_visible = headers_visible == TRUE;
11703
11704   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11705     {
11706       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11707       if (headers_visible)
11708         {
11709           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11710           gdk_window_move_resize (tree_view->priv->bin_window,
11711                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11712                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11713
11714           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11715             gtk_tree_view_map_buttons (tree_view);
11716         }
11717       else
11718         {
11719           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11720
11721           for (list = tree_view->priv->columns; list; list = list->next)
11722             {
11723               column = list->data;
11724               button = gtk_tree_view_column_get_button (column);
11725
11726               gtk_widget_hide (button);
11727               gtk_widget_unmap (button);
11728             }
11729           gdk_window_hide (tree_view->priv->header_window);
11730         }
11731     }
11732
11733   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11734   gtk_adjustment_configure (tree_view->priv->vadjustment,
11735                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11736                             0,
11737                             tree_view->priv->height,
11738                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11739                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11740                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11741
11742   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11743
11744   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11745 }
11746
11747 /**
11748  * gtk_tree_view_columns_autosize:
11749  * @tree_view: A #GtkTreeView.
11750  *
11751  * Resizes all columns to their optimal width. Only works after the
11752  * treeview has been realized.
11753  **/
11754 void
11755 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11756 {
11757   gboolean dirty = FALSE;
11758   GList *list;
11759   GtkTreeViewColumn *column;
11760
11761   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11762
11763   for (list = tree_view->priv->columns; list; list = list->next)
11764     {
11765       column = list->data;
11766       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11767         continue;
11768       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11769       dirty = TRUE;
11770     }
11771
11772   if (dirty)
11773     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11774 }
11775
11776 /**
11777  * gtk_tree_view_set_headers_clickable:
11778  * @tree_view: A #GtkTreeView.
11779  * @setting: %TRUE if the columns are clickable.
11780  *
11781  * Allow the column title buttons to be clicked.
11782  **/
11783 void
11784 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11785                                      gboolean   setting)
11786 {
11787   GList *list;
11788
11789   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11790
11791   for (list = tree_view->priv->columns; list; list = list->next)
11792     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11793
11794   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11795 }
11796
11797
11798 /**
11799  * gtk_tree_view_get_headers_clickable:
11800  * @tree_view: A #GtkTreeView.
11801  *
11802  * Returns whether all header columns are clickable.
11803  *
11804  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11805  *
11806  * Since: 2.10
11807  **/
11808 gboolean
11809 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11810 {
11811   GList *list;
11812
11813   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11814
11815   for (list = tree_view->priv->columns; list; list = list->next)
11816     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11817       return FALSE;
11818
11819   return TRUE;
11820 }
11821
11822 /**
11823  * gtk_tree_view_set_rules_hint
11824  * @tree_view: a #GtkTreeView
11825  * @setting: %TRUE if the tree requires reading across rows
11826  *
11827  * This function tells GTK+ that the user interface for your
11828  * application requires users to read across tree rows and associate
11829  * cells with one another. By default, GTK+ will then render the tree
11830  * with alternating row colors. Do <emphasis>not</emphasis> use it
11831  * just because you prefer the appearance of the ruled tree; that's a
11832  * question for the theme. Some themes will draw tree rows in
11833  * alternating colors even when rules are turned off, and users who
11834  * prefer that appearance all the time can choose those themes. You
11835  * should call this function only as a <emphasis>semantic</emphasis>
11836  * hint to the theme engine that your tree makes alternating colors
11837  * useful from a functional standpoint (since it has lots of columns,
11838  * generally).
11839  *
11840  **/
11841 void
11842 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11843                               gboolean      setting)
11844 {
11845   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11846
11847   setting = setting != FALSE;
11848
11849   if (tree_view->priv->has_rules != setting)
11850     {
11851       tree_view->priv->has_rules = setting;
11852       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11853     }
11854
11855   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11856 }
11857
11858 /**
11859  * gtk_tree_view_get_rules_hint
11860  * @tree_view: a #GtkTreeView
11861  *
11862  * Gets the setting set by gtk_tree_view_set_rules_hint().
11863  *
11864  * Return value: %TRUE if rules are useful for the user of this tree
11865  **/
11866 gboolean
11867 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11868 {
11869   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11870
11871   return tree_view->priv->has_rules;
11872 }
11873
11874 /* Public Column functions
11875  */
11876
11877 /**
11878  * gtk_tree_view_append_column:
11879  * @tree_view: A #GtkTreeView.
11880  * @column: The #GtkTreeViewColumn to add.
11881  *
11882  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11883  * mode enabled, then @column must have its "sizing" property set to be
11884  * GTK_TREE_VIEW_COLUMN_FIXED.
11885  *
11886  * Return value: The number of columns in @tree_view after appending.
11887  **/
11888 gint
11889 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11890                              GtkTreeViewColumn *column)
11891 {
11892   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11893   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11894   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11895
11896   return gtk_tree_view_insert_column (tree_view, column, -1);
11897 }
11898
11899 void
11900 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11901 {
11902   GList *columns;
11903
11904   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11905     {
11906       GtkTreeViewColumn *column = columns->data;
11907       GtkWidget *header_widget;
11908
11909       if (gtk_tree_view_column_get_visible (column))
11910         continue;
11911
11912       header_widget = gtk_tree_view_column_get_widget (column);
11913
11914       if (!header_widget)
11915         header_widget = gtk_tree_view_column_get_button (column);
11916
11917       gtk_widget_reset_style (header_widget);
11918     }
11919 }
11920
11921
11922 /**
11923  * gtk_tree_view_remove_column:
11924  * @tree_view: A #GtkTreeView.
11925  * @column: The #GtkTreeViewColumn to remove.
11926  *
11927  * Removes @column from @tree_view.
11928  *
11929  * Return value: The number of columns in @tree_view after removing.
11930  **/
11931 gint
11932 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11933                              GtkTreeViewColumn *column)
11934 {
11935   guint position;
11936
11937   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11938   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11939   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11940
11941   if (tree_view->priv->focus_column == column)
11942     _gtk_tree_view_set_focus_column (tree_view, NULL);
11943
11944   if (tree_view->priv->edited_column == column)
11945     {
11946       gtk_tree_view_stop_editing (tree_view, TRUE);
11947
11948       /* no need to, but just to be sure ... */
11949       tree_view->priv->edited_column = NULL;
11950     }
11951
11952   if (tree_view->priv->expander_column == column)
11953     tree_view->priv->expander_column = NULL;
11954
11955   g_signal_handlers_disconnect_by_func (column,
11956                                         G_CALLBACK (column_sizing_notify),
11957                                         tree_view);
11958
11959   _gtk_tree_view_column_unset_tree_view (column);
11960
11961   position = g_list_index (tree_view->priv->columns, column);
11962
11963   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11964   tree_view->priv->n_columns--;
11965
11966   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11967     {
11968       GList *list;
11969
11970       _gtk_tree_view_column_unrealize_button (column);
11971       for (list = tree_view->priv->columns; list; list = list->next)
11972         {
11973           GtkTreeViewColumn *tmp_column;
11974
11975           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11976           if (gtk_tree_view_column_get_visible (tmp_column))
11977             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11978         }
11979
11980       if (tree_view->priv->n_columns == 0 &&
11981           gtk_tree_view_get_headers_visible (tree_view))
11982         gdk_window_hide (tree_view->priv->header_window);
11983
11984       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11985     }
11986
11987   _gtk_tree_view_reset_header_styles (tree_view);
11988
11989   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11990
11991   g_object_unref (column);
11992   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11993
11994   return tree_view->priv->n_columns;
11995 }
11996
11997 /**
11998  * gtk_tree_view_insert_column:
11999  * @tree_view: A #GtkTreeView.
12000  * @column: The #GtkTreeViewColumn to be inserted.
12001  * @position: The position to insert @column in.
12002  *
12003  * This inserts the @column into the @tree_view at @position.  If @position is
12004  * -1, then the column is inserted at the end. If @tree_view has
12005  * "fixed_height" mode enabled, then @column must have its "sizing" property
12006  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12007  *
12008  * Return value: The number of columns in @tree_view after insertion.
12009  **/
12010 gint
12011 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12012                              GtkTreeViewColumn *column,
12013                              gint               position)
12014 {
12015   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12016   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12017   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12018
12019   if (tree_view->priv->fixed_height_mode)
12020     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12021                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12022
12023   if (position < 0 || position > tree_view->priv->n_columns)
12024     position = tree_view->priv->n_columns;
12025
12026   g_object_ref_sink (column);
12027
12028   if (tree_view->priv->n_columns == 0 &&
12029       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12030       gtk_tree_view_get_headers_visible (tree_view))
12031     {
12032       gdk_window_show (tree_view->priv->header_window);
12033     }
12034
12035   g_signal_connect (column, "notify::sizing",
12036                     G_CALLBACK (column_sizing_notify), tree_view);
12037
12038   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12039                                             column, position);
12040   tree_view->priv->n_columns++;
12041
12042   _gtk_tree_view_column_set_tree_view (column, tree_view);
12043
12044   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12045     {
12046       GList *list;
12047
12048       _gtk_tree_view_column_realize_button (column);
12049
12050       for (list = tree_view->priv->columns; list; list = list->next)
12051         {
12052           column = GTK_TREE_VIEW_COLUMN (list->data);
12053           if (gtk_tree_view_column_get_visible (column))
12054             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12055         }
12056       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12057     }
12058
12059   _gtk_tree_view_reset_header_styles (tree_view);
12060
12061   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12062
12063   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12064
12065   return tree_view->priv->n_columns;
12066 }
12067
12068 /**
12069  * gtk_tree_view_insert_column_with_attributes:
12070  * @tree_view: A #GtkTreeView
12071  * @position: The position to insert the new column in
12072  * @title: The title to set the header to
12073  * @cell: The #GtkCellRenderer
12074  * @...: A %NULL-terminated list of attributes
12075  *
12076  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12077  * @position.  If @position is -1, then the newly created column is inserted at
12078  * the end.  The column is initialized with the attributes given. If @tree_view
12079  * has "fixed_height" mode enabled, then the new column will have its sizing
12080  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12081  *
12082  * Return value: The number of columns in @tree_view after insertion.
12083  **/
12084 gint
12085 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12086                                              gint             position,
12087                                              const gchar     *title,
12088                                              GtkCellRenderer *cell,
12089                                              ...)
12090 {
12091   GtkTreeViewColumn *column;
12092   gchar *attribute;
12093   va_list args;
12094   gint column_id;
12095
12096   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12097
12098   column = gtk_tree_view_column_new ();
12099   if (tree_view->priv->fixed_height_mode)
12100     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12101
12102   gtk_tree_view_column_set_title (column, title);
12103   gtk_tree_view_column_pack_start (column, cell, TRUE);
12104
12105   va_start (args, cell);
12106
12107   attribute = va_arg (args, gchar *);
12108
12109   while (attribute != NULL)
12110     {
12111       column_id = va_arg (args, gint);
12112       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12113       attribute = va_arg (args, gchar *);
12114     }
12115
12116   va_end (args);
12117
12118   return gtk_tree_view_insert_column (tree_view, column, position);
12119 }
12120
12121 /**
12122  * gtk_tree_view_insert_column_with_data_func:
12123  * @tree_view: a #GtkTreeView
12124  * @position: Position to insert, -1 for append
12125  * @title: column title
12126  * @cell: cell renderer for column
12127  * @func: function to set attributes of cell renderer
12128  * @data: data for @func
12129  * @dnotify: destroy notifier for @data
12130  *
12131  * Convenience function that inserts a new column into the #GtkTreeView
12132  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12133  * attributes (normally using data from the model). See also
12134  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12135  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12136  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12137  *
12138  * Return value: number of columns in the tree view post-insert
12139  **/
12140 gint
12141 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12142                                              gint                       position,
12143                                              const gchar               *title,
12144                                              GtkCellRenderer           *cell,
12145                                              GtkTreeCellDataFunc        func,
12146                                              gpointer                   data,
12147                                              GDestroyNotify             dnotify)
12148 {
12149   GtkTreeViewColumn *column;
12150
12151   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12152
12153   column = gtk_tree_view_column_new ();
12154   if (tree_view->priv->fixed_height_mode)
12155     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12156
12157   gtk_tree_view_column_set_title (column, title);
12158   gtk_tree_view_column_pack_start (column, cell, TRUE);
12159   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12160
12161   return gtk_tree_view_insert_column (tree_view, column, position);
12162 }
12163
12164 /**
12165  * gtk_tree_view_get_n_columns:
12166  * @tree_view: a #GtkTreeView
12167  *
12168  * Queries the number of columns in the given @tree_view.
12169  *
12170  * Returns: The number of columns in the @tree_view
12171  *
12172  * Since: 3.4
12173  **/
12174 guint
12175 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12176 {
12177   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12178
12179   return tree_view->priv->n_columns;
12180 }
12181
12182 /**
12183  * gtk_tree_view_get_column:
12184  * @tree_view: A #GtkTreeView.
12185  * @n: The position of the column, counting from 0.
12186  *
12187  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12188  *
12189  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12190  *     position is outside the range of columns.
12191  **/
12192 GtkTreeViewColumn *
12193 gtk_tree_view_get_column (GtkTreeView *tree_view,
12194                           gint         n)
12195 {
12196   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12197
12198   if (n < 0 || n >= tree_view->priv->n_columns)
12199     return NULL;
12200
12201   if (tree_view->priv->columns == NULL)
12202     return NULL;
12203
12204   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12205 }
12206
12207 /**
12208  * gtk_tree_view_get_columns:
12209  * @tree_view: A #GtkTreeView
12210  *
12211  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12212  * The returned list must be freed with g_list_free ().
12213  *
12214  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12215  **/
12216 GList *
12217 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12218 {
12219   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12220
12221   return g_list_copy (tree_view->priv->columns);
12222 }
12223
12224 /**
12225  * gtk_tree_view_move_column_after:
12226  * @tree_view: A #GtkTreeView
12227  * @column: The #GtkTreeViewColumn to be moved.
12228  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12229  *
12230  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12231  * @column is placed in the first position.
12232  **/
12233 void
12234 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12235                                  GtkTreeViewColumn *column,
12236                                  GtkTreeViewColumn *base_column)
12237 {
12238   GList *column_list_el, *base_el = NULL;
12239
12240   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12241
12242   column_list_el = g_list_find (tree_view->priv->columns, column);
12243   g_return_if_fail (column_list_el != NULL);
12244
12245   if (base_column)
12246     {
12247       base_el = g_list_find (tree_view->priv->columns, base_column);
12248       g_return_if_fail (base_el != NULL);
12249     }
12250
12251   if (column_list_el->prev == base_el)
12252     return;
12253
12254   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12255   if (base_el == NULL)
12256     {
12257       column_list_el->prev = NULL;
12258       column_list_el->next = tree_view->priv->columns;
12259       if (column_list_el->next)
12260         column_list_el->next->prev = column_list_el;
12261       tree_view->priv->columns = column_list_el;
12262     }
12263   else
12264     {
12265       column_list_el->prev = base_el;
12266       column_list_el->next = base_el->next;
12267       if (column_list_el->next)
12268         column_list_el->next->prev = column_list_el;
12269       base_el->next = column_list_el;
12270     }
12271
12272   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12273     {
12274       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12275       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12276     }
12277
12278   _gtk_tree_view_reset_header_styles (tree_view);
12279
12280   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12281
12282   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12283 }
12284
12285 /**
12286  * gtk_tree_view_set_expander_column:
12287  * @tree_view: A #GtkTreeView
12288  * @column: %NULL, or the column to draw the expander arrow at.
12289  *
12290  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12291  * If @column is %NULL, then the expander arrow is always at the first
12292  * visible column.
12293  *
12294  * If you do not want expander arrow to appear in your tree, set the
12295  * expander column to a hidden column.
12296  **/
12297 void
12298 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12299                                    GtkTreeViewColumn *column)
12300 {
12301   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12302   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12303   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12304
12305   if (tree_view->priv->expander_column != column)
12306     {
12307       tree_view->priv->expander_column = column;
12308       g_object_notify (G_OBJECT (tree_view), "expander-column");
12309     }
12310 }
12311
12312 /**
12313  * gtk_tree_view_get_expander_column:
12314  * @tree_view: A #GtkTreeView
12315  *
12316  * Returns the column that is the current expander column.
12317  * This column has the expander arrow drawn next to it.
12318  *
12319  * Return value: (transfer none): The expander column.
12320  **/
12321 GtkTreeViewColumn *
12322 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12323 {
12324   GList *list;
12325
12326   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12327
12328   for (list = tree_view->priv->columns; list; list = list->next)
12329     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12330       return (GtkTreeViewColumn *) list->data;
12331   return NULL;
12332 }
12333
12334
12335 /**
12336  * gtk_tree_view_set_column_drag_function:
12337  * @tree_view: A #GtkTreeView.
12338  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12339  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12340  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12341  *
12342  * Sets a user function for determining where a column may be dropped when
12343  * dragged.  This function is called on every column pair in turn at the
12344  * beginning of a column drag to determine where a drop can take place.  The
12345  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12346  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12347  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12348  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12349  * @tree_view reverts to the default behavior of allowing all columns to be
12350  * dropped everywhere.
12351  **/
12352 void
12353 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12354                                         GtkTreeViewColumnDropFunc  func,
12355                                         gpointer                   user_data,
12356                                         GDestroyNotify             destroy)
12357 {
12358   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12359
12360   if (tree_view->priv->column_drop_func_data_destroy)
12361     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12362
12363   tree_view->priv->column_drop_func = func;
12364   tree_view->priv->column_drop_func_data = user_data;
12365   tree_view->priv->column_drop_func_data_destroy = destroy;
12366 }
12367
12368 /**
12369  * gtk_tree_view_scroll_to_point:
12370  * @tree_view: a #GtkTreeView
12371  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12372  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12373  *
12374  * Scrolls the tree view such that the top-left corner of the visible
12375  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12376  * in tree coordinates.  The @tree_view must be realized before
12377  * this function is called.  If it isn't, you probably want to be
12378  * using gtk_tree_view_scroll_to_cell().
12379  *
12380  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12381  **/
12382 void
12383 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12384                                gint         tree_x,
12385                                gint         tree_y)
12386 {
12387   GtkAdjustment *hadj;
12388   GtkAdjustment *vadj;
12389
12390   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12391   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12392
12393   hadj = tree_view->priv->hadjustment;
12394   vadj = tree_view->priv->vadjustment;
12395
12396   if (tree_x != -1)
12397     gtk_adjustment_set_value (hadj, tree_x);
12398   if (tree_y != -1)
12399     gtk_adjustment_set_value (vadj, tree_y);
12400 }
12401
12402 /**
12403  * gtk_tree_view_scroll_to_cell:
12404  * @tree_view: A #GtkTreeView.
12405  * @path: (allow-none): The path of the row to move to, or %NULL.
12406  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12407  * @use_align: whether to use alignment arguments, or %FALSE.
12408  * @row_align: The vertical alignment of the row specified by @path.
12409  * @col_align: The horizontal alignment of the column specified by @column.
12410  *
12411  * Moves the alignments of @tree_view to the position specified by @column and
12412  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12413  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12414  * or @path need to be non-%NULL.  @row_align determines where the row is
12415  * placed, and @col_align determines where @column is placed.  Both are expected
12416  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12417  * right/bottom alignment, 0.5 means center.
12418  *
12419  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12420  * tree does the minimum amount of work to scroll the cell onto the screen.
12421  * This means that the cell will be scrolled to the edge closest to its current
12422  * position.  If the cell is currently visible on the screen, nothing is done.
12423  *
12424  * This function only works if the model is set, and @path is a valid row on the
12425  * model.  If the model changes before the @tree_view is realized, the centered
12426  * path will be modified to reflect this change.
12427  **/
12428 void
12429 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12430                               GtkTreePath       *path,
12431                               GtkTreeViewColumn *column,
12432                               gboolean           use_align,
12433                               gfloat             row_align,
12434                               gfloat             col_align)
12435 {
12436   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12437   g_return_if_fail (tree_view->priv->model != NULL);
12438   g_return_if_fail (tree_view->priv->tree != NULL);
12439   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12440   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12441   g_return_if_fail (path != NULL || column != NULL);
12442
12443 #if 0
12444   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12445            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12446 #endif
12447   row_align = CLAMP (row_align, 0.0, 1.0);
12448   col_align = CLAMP (col_align, 0.0, 1.0);
12449
12450
12451   /* Note: Despite the benefits that come from having one code path for the
12452    * scrolling code, we short-circuit validate_visible_area's immplementation as
12453    * it is much slower than just going to the point.
12454    */
12455   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12456       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12457       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12458       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12459     {
12460       if (tree_view->priv->scroll_to_path)
12461         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12462
12463       tree_view->priv->scroll_to_path = NULL;
12464       tree_view->priv->scroll_to_column = NULL;
12465
12466       if (path)
12467         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12468       if (column)
12469         tree_view->priv->scroll_to_column = column;
12470       tree_view->priv->scroll_to_use_align = use_align;
12471       tree_view->priv->scroll_to_row_align = row_align;
12472       tree_view->priv->scroll_to_col_align = col_align;
12473
12474       install_presize_handler (tree_view);
12475     }
12476   else
12477     {
12478       GdkRectangle cell_rect;
12479       GdkRectangle vis_rect;
12480       gint dest_x, dest_y;
12481
12482       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12483       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12484
12485       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12486
12487       dest_x = vis_rect.x;
12488       dest_y = vis_rect.y;
12489
12490       if (column)
12491         {
12492           if (use_align)
12493             {
12494               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12495             }
12496           else
12497             {
12498               if (cell_rect.x < vis_rect.x)
12499                 dest_x = cell_rect.x;
12500               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12501                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12502             }
12503         }
12504
12505       if (path)
12506         {
12507           if (use_align)
12508             {
12509               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12510               dest_y = MAX (dest_y, 0);
12511             }
12512           else
12513             {
12514               if (cell_rect.y < vis_rect.y)
12515                 dest_y = cell_rect.y;
12516               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12517                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12518             }
12519         }
12520
12521       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12522     }
12523 }
12524
12525 /**
12526  * gtk_tree_view_row_activated:
12527  * @tree_view: A #GtkTreeView
12528  * @path: The #GtkTreePath to be activated.
12529  * @column: The #GtkTreeViewColumn to be activated.
12530  *
12531  * Activates the cell determined by @path and @column.
12532  **/
12533 void
12534 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12535                              GtkTreePath       *path,
12536                              GtkTreeViewColumn *column)
12537 {
12538   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12539
12540   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12541 }
12542
12543
12544 static void
12545 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12546                                           GtkRBNode *node,
12547                                           gpointer   data)
12548 {
12549   GtkTreeView *tree_view = data;
12550
12551   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12552       node->children)
12553     {
12554       GtkTreePath *path;
12555       GtkTreeIter iter;
12556
12557       path = _gtk_tree_path_new_from_rbtree (tree, node);
12558       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12559
12560       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12561
12562       gtk_tree_path_free (path);
12563     }
12564
12565   if (node->children)
12566     _gtk_rbtree_traverse (node->children,
12567                           node->children->root,
12568                           G_PRE_ORDER,
12569                           gtk_tree_view_expand_all_emission_helper,
12570                           tree_view);
12571 }
12572
12573 /**
12574  * gtk_tree_view_expand_all:
12575  * @tree_view: A #GtkTreeView.
12576  *
12577  * Recursively expands all nodes in the @tree_view.
12578  **/
12579 void
12580 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12581 {
12582   GtkTreePath *path;
12583   GtkRBTree *tree;
12584   GtkRBNode *node;
12585
12586   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12587
12588   if (tree_view->priv->tree == NULL)
12589     return;
12590
12591   path = gtk_tree_path_new_first ();
12592   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12593
12594   while (node)
12595     {
12596       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12597       node = _gtk_rbtree_next (tree, node);
12598       gtk_tree_path_next (path);
12599   }
12600
12601   gtk_tree_path_free (path);
12602 }
12603
12604 /**
12605  * gtk_tree_view_collapse_all:
12606  * @tree_view: A #GtkTreeView.
12607  *
12608  * Recursively collapses all visible, expanded nodes in @tree_view.
12609  **/
12610 void
12611 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12612 {
12613   GtkRBTree *tree;
12614   GtkRBNode *node;
12615   GtkTreePath *path;
12616   gint *indices;
12617
12618   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12619
12620   if (tree_view->priv->tree == NULL)
12621     return;
12622
12623   path = gtk_tree_path_new ();
12624   gtk_tree_path_down (path);
12625   indices = gtk_tree_path_get_indices (path);
12626
12627   tree = tree_view->priv->tree;
12628   node = _gtk_rbtree_first (tree);
12629
12630   while (node)
12631     {
12632       if (node->children)
12633         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12634       indices[0]++;
12635       node = _gtk_rbtree_next (tree, node);
12636     }
12637
12638   gtk_tree_path_free (path);
12639 }
12640
12641 /**
12642  * gtk_tree_view_expand_to_path:
12643  * @tree_view: A #GtkTreeView.
12644  * @path: path to a row.
12645  *
12646  * Expands the row at @path. This will also expand all parent rows of
12647  * @path as necessary.
12648  *
12649  * Since: 2.2
12650  **/
12651 void
12652 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12653                               GtkTreePath *path)
12654 {
12655   gint i, depth;
12656   gint *indices;
12657   GtkTreePath *tmp;
12658
12659   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12660   g_return_if_fail (path != NULL);
12661
12662   depth = gtk_tree_path_get_depth (path);
12663   indices = gtk_tree_path_get_indices (path);
12664
12665   tmp = gtk_tree_path_new ();
12666   g_return_if_fail (tmp != NULL);
12667
12668   for (i = 0; i < depth; i++)
12669     {
12670       gtk_tree_path_append_index (tmp, indices[i]);
12671       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12672     }
12673
12674   gtk_tree_path_free (tmp);
12675 }
12676
12677 /* FIXME the bool return values for expand_row and collapse_row are
12678  * not analagous; they should be TRUE if the row had children and
12679  * was not already in the requested state.
12680  */
12681
12682
12683 static gboolean
12684 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12685                                GtkTreePath *path,
12686                                GtkRBTree   *tree,
12687                                GtkRBNode   *node,
12688                                gboolean     open_all,
12689                                gboolean     animate)
12690 {
12691   GtkTreeIter iter;
12692   GtkTreeIter temp;
12693   gboolean expand;
12694
12695   if (animate)
12696     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12697                   "gtk-enable-animations", &animate,
12698                   NULL);
12699
12700   remove_auto_expand_timeout (tree_view);
12701
12702   if (node->children && !open_all)
12703     return FALSE;
12704
12705   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12706     return FALSE;
12707
12708   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12709   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12710     return FALSE;
12711
12712
12713    if (node->children && open_all)
12714     {
12715       gboolean retval = FALSE;
12716       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12717
12718       gtk_tree_path_append_index (tmp_path, 0);
12719       tree = node->children;
12720       node = _gtk_rbtree_first (tree);
12721       /* try to expand the children */
12722       do
12723         {
12724          gboolean t;
12725          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12726                                             TRUE, animate);
12727          if (t)
12728            retval = TRUE;
12729
12730          gtk_tree_path_next (tmp_path);
12731          node = _gtk_rbtree_next (tree, node);
12732        }
12733       while (node != NULL);
12734
12735       gtk_tree_path_free (tmp_path);
12736
12737       return retval;
12738     }
12739
12740   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12741
12742   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12743     return FALSE;
12744
12745   if (expand)
12746     return FALSE;
12747
12748   node->children = _gtk_rbtree_new ();
12749   node->children->parent_tree = tree;
12750   node->children->parent_node = node;
12751
12752   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12753
12754   gtk_tree_view_build_tree (tree_view,
12755                             node->children,
12756                             &temp,
12757                             gtk_tree_path_get_depth (path) + 1,
12758                             open_all);
12759
12760   _gtk_tree_view_accessible_add (tree_view, node->children, NULL);
12761   _gtk_tree_view_accessible_add_state (tree_view,
12762                                        tree, node,
12763                                        GTK_CELL_RENDERER_EXPANDED);
12764
12765   if (animate)
12766     {
12767       GtkStyleContext *context;
12768
12769       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12770
12771       gtk_style_context_save (context);
12772       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12773
12774       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12775                                              node, GTK_STATE_ACTIVE, TRUE);
12776
12777       _gtk_style_context_invalidate_animation_areas (context);
12778       gtk_style_context_restore (context);
12779     }
12780
12781   install_presize_handler (tree_view);
12782
12783   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12784   if (open_all && node->children)
12785     {
12786       _gtk_rbtree_traverse (node->children,
12787                             node->children->root,
12788                             G_PRE_ORDER,
12789                             gtk_tree_view_expand_all_emission_helper,
12790                             tree_view);
12791     }
12792   return TRUE;
12793 }
12794
12795
12796 /**
12797  * gtk_tree_view_expand_row:
12798  * @tree_view: a #GtkTreeView
12799  * @path: path to a row
12800  * @open_all: whether to recursively expand, or just expand immediate children
12801  *
12802  * Opens the row so its children are visible.
12803  *
12804  * Return value: %TRUE if the row existed and had children
12805  **/
12806 gboolean
12807 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12808                           GtkTreePath *path,
12809                           gboolean     open_all)
12810 {
12811   GtkRBTree *tree;
12812   GtkRBNode *node;
12813
12814   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12815   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12816   g_return_val_if_fail (path != NULL, FALSE);
12817
12818   if (_gtk_tree_view_find_node (tree_view,
12819                                 path,
12820                                 &tree,
12821                                 &node))
12822     return FALSE;
12823
12824   if (tree != NULL)
12825     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12826   else
12827     return FALSE;
12828 }
12829
12830 static gboolean
12831 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12832                                  GtkTreePath *path,
12833                                  GtkRBTree   *tree,
12834                                  GtkRBNode   *node,
12835                                  gboolean     animate)
12836 {
12837   GtkTreeIter iter;
12838   GtkTreeIter children;
12839   gboolean collapse;
12840   gint x, y;
12841   GList *list;
12842   GdkWindow *child;
12843   gboolean selection_changed, cursor_changed;
12844
12845   if (animate)
12846     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12847                   "gtk-enable-animations", &animate,
12848                   NULL);
12849
12850   remove_auto_expand_timeout (tree_view);
12851
12852   if (node->children == NULL)
12853     return FALSE;
12854   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12855
12856   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12857
12858   if (collapse)
12859     return FALSE;
12860
12861   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12862    * a chance to prelight the correct node below */
12863
12864   if (tree_view->priv->prelight_tree)
12865     {
12866       GtkRBTree *parent_tree;
12867       GtkRBNode *parent_node;
12868
12869       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12870       parent_node = tree_view->priv->prelight_tree->parent_node;
12871       while (parent_tree)
12872         {
12873           if (parent_tree == tree && parent_node == node)
12874             {
12875               ensure_unprelighted (tree_view);
12876               break;
12877             }
12878           parent_node = parent_tree->parent_node;
12879           parent_tree = parent_tree->parent_tree;
12880         }
12881     }
12882
12883   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12884
12885   for (list = tree_view->priv->columns; list; list = list->next)
12886     {
12887       GtkTreeViewColumn *column = list->data;
12888
12889       if (gtk_tree_view_column_get_visible (column) == FALSE)
12890         continue;
12891       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12892         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12893     }
12894
12895   if (tree_view->priv->destroy_count_func)
12896     {
12897       GtkTreePath *child_path;
12898       gint child_count = 0;
12899       child_path = gtk_tree_path_copy (path);
12900       gtk_tree_path_down (child_path);
12901       if (node->children)
12902         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12903       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12904       gtk_tree_path_free (child_path);
12905     }
12906
12907   if (tree_view->priv->cursor_node)
12908     {
12909       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12910                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12911     }
12912   else
12913     cursor_changed = FALSE;
12914
12915   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12916     {
12917       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12918       if (gtk_tree_path_is_ancestor (path, anchor_path))
12919         {
12920           gtk_tree_row_reference_free (tree_view->priv->anchor);
12921           tree_view->priv->anchor = NULL;
12922         }
12923       gtk_tree_path_free (anchor_path);
12924     }
12925
12926   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12927
12928   /* Stop a pending double click */
12929   tree_view->priv->last_button_x = -1;
12930   tree_view->priv->last_button_y = -1;
12931
12932   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12933   _gtk_tree_view_accessible_remove_state (tree_view,
12934                                           tree, node,
12935                                           GTK_CELL_RENDERER_EXPANDED);
12936
12937   _gtk_rbtree_remove (node->children);
12938
12939   if (cursor_changed)
12940     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12941   if (selection_changed)
12942     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12943
12944   if (animate)
12945     {
12946       GtkStyleContext *context;
12947
12948       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12949
12950       gtk_style_context_save (context);
12951       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12952
12953       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12954                                              node, GTK_STATE_ACTIVE, FALSE);
12955
12956       _gtk_style_context_invalidate_animation_areas (context);
12957       gtk_style_context_restore (context);
12958     }
12959
12960   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12961     {
12962       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12963     }
12964
12965   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12966
12967   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12968     {
12969       /* now that we've collapsed all rows, we want to try to set the prelight
12970        * again. To do this, we fake a motion event and send it to ourselves. */
12971
12972       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12973                                               gdk_device_manager_get_client_pointer (
12974                                                 gdk_display_get_device_manager (
12975                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12976                                               &x, &y, NULL);
12977       if (child == tree_view->priv->bin_window)
12978         {
12979           GdkEventMotion event;
12980           gint child_x, child_y;
12981
12982           gdk_window_get_position (child, &child_x, &child_y);
12983
12984           event.window = tree_view->priv->bin_window;
12985           event.x = x - child_x;
12986           event.y = y - child_y;
12987
12988           /* despite the fact this isn't a real event, I'm almost positive it will
12989            * never trigger a drag event.  maybe_drag is the only function that uses
12990            * more than just event.x and event.y. */
12991           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12992         }
12993     }
12994
12995   return TRUE;
12996 }
12997
12998 /**
12999  * gtk_tree_view_collapse_row:
13000  * @tree_view: a #GtkTreeView
13001  * @path: path to a row in the @tree_view
13002  *
13003  * Collapses a row (hides its child rows, if they exist).
13004  *
13005  * Return value: %TRUE if the row was collapsed.
13006  **/
13007 gboolean
13008 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
13009                             GtkTreePath *path)
13010 {
13011   GtkRBTree *tree;
13012   GtkRBNode *node;
13013
13014   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13015   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13016   g_return_val_if_fail (path != NULL, FALSE);
13017
13018   if (_gtk_tree_view_find_node (tree_view,
13019                                 path,
13020                                 &tree,
13021                                 &node))
13022     return FALSE;
13023
13024   if (tree == NULL || node->children == NULL)
13025     return FALSE;
13026
13027   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13028 }
13029
13030 static void
13031 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13032                                         GtkRBTree              *tree,
13033                                         GtkTreePath            *path,
13034                                         GtkTreeViewMappingFunc  func,
13035                                         gpointer                user_data)
13036 {
13037   GtkRBNode *node;
13038
13039   if (tree == NULL || tree->root == NULL)
13040     return;
13041
13042   node = _gtk_rbtree_first (tree);
13043
13044   while (node)
13045     {
13046       if (node->children)
13047         {
13048           (* func) (tree_view, path, user_data);
13049           gtk_tree_path_down (path);
13050           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13051           gtk_tree_path_up (path);
13052         }
13053       gtk_tree_path_next (path);
13054       node = _gtk_rbtree_next (tree, node);
13055     }
13056 }
13057
13058 /**
13059  * gtk_tree_view_map_expanded_rows:
13060  * @tree_view: A #GtkTreeView
13061  * @func: (scope call): A function to be called
13062  * @data: User data to be passed to the function.
13063  *
13064  * Calls @func on all expanded rows.
13065  **/
13066 void
13067 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13068                                  GtkTreeViewMappingFunc  func,
13069                                  gpointer                user_data)
13070 {
13071   GtkTreePath *path;
13072
13073   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13074   g_return_if_fail (func != NULL);
13075
13076   path = gtk_tree_path_new_first ();
13077
13078   gtk_tree_view_map_expanded_rows_helper (tree_view,
13079                                           tree_view->priv->tree,
13080                                           path, func, user_data);
13081
13082   gtk_tree_path_free (path);
13083 }
13084
13085 /**
13086  * gtk_tree_view_row_expanded:
13087  * @tree_view: A #GtkTreeView.
13088  * @path: A #GtkTreePath to test expansion state.
13089  *
13090  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13091  *
13092  * Return value: %TRUE if #path is expanded.
13093  **/
13094 gboolean
13095 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13096                             GtkTreePath *path)
13097 {
13098   GtkRBTree *tree;
13099   GtkRBNode *node;
13100
13101   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13102   g_return_val_if_fail (path != NULL, FALSE);
13103
13104   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13105
13106   if (node == NULL)
13107     return FALSE;
13108
13109   return (node->children != NULL);
13110 }
13111
13112 /**
13113  * gtk_tree_view_get_reorderable:
13114  * @tree_view: a #GtkTreeView
13115  *
13116  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13117  * gtk_tree_view_set_reorderable().
13118  *
13119  * Return value: %TRUE if the tree can be reordered.
13120  **/
13121 gboolean
13122 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13123 {
13124   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13125
13126   return tree_view->priv->reorderable;
13127 }
13128
13129 /**
13130  * gtk_tree_view_set_reorderable:
13131  * @tree_view: A #GtkTreeView.
13132  * @reorderable: %TRUE, if the tree can be reordered.
13133  *
13134  * This function is a convenience function to allow you to reorder
13135  * models that support the #GtkTreeDragSourceIface and the
13136  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13137  * these.  If @reorderable is %TRUE, then the user can reorder the
13138  * model by dragging and dropping rows. The developer can listen to
13139  * these changes by connecting to the model's row_inserted and
13140  * row_deleted signals. The reordering is implemented by setting up
13141  * the tree view as a drag source and destination. Therefore, drag and
13142  * drop can not be used in a reorderable view for any other purpose.
13143  *
13144  * This function does not give you any degree of control over the order -- any
13145  * reordering is allowed.  If more control is needed, you should probably
13146  * handle drag and drop manually.
13147  **/
13148 void
13149 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13150                                gboolean     reorderable)
13151 {
13152   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13153
13154   reorderable = reorderable != FALSE;
13155
13156   if (tree_view->priv->reorderable == reorderable)
13157     return;
13158
13159   if (reorderable)
13160     {
13161       const GtkTargetEntry row_targets[] = {
13162         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13163       };
13164
13165       gtk_tree_view_enable_model_drag_source (tree_view,
13166                                               GDK_BUTTON1_MASK,
13167                                               row_targets,
13168                                               G_N_ELEMENTS (row_targets),
13169                                               GDK_ACTION_MOVE);
13170       gtk_tree_view_enable_model_drag_dest (tree_view,
13171                                             row_targets,
13172                                             G_N_ELEMENTS (row_targets),
13173                                             GDK_ACTION_MOVE);
13174     }
13175   else
13176     {
13177       gtk_tree_view_unset_rows_drag_source (tree_view);
13178       gtk_tree_view_unset_rows_drag_dest (tree_view);
13179     }
13180
13181   tree_view->priv->reorderable = reorderable;
13182
13183   g_object_notify (G_OBJECT (tree_view), "reorderable");
13184 }
13185
13186 static void
13187 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13188                                GtkTreePath     *path,
13189                                SetCursorFlags   flags)
13190 {
13191   if (!(flags & CURSOR_INVALID) && tree_view->priv->cursor_node)
13192     {
13193       _gtk_tree_view_queue_draw_node (tree_view,
13194                                       tree_view->priv->cursor_tree,
13195                                       tree_view->priv->cursor_node,
13196                                       NULL);
13197     }
13198
13199   /* One cannot set the cursor on a separator.   Also, if
13200    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13201    * before finding the tree and node belonging to path.  The
13202    * path maps to a non-existing path and we will silently bail out.
13203    * We unset tree and node to avoid further processing.
13204    */
13205   if (path == NULL ||
13206       row_is_separator (tree_view, NULL, path)
13207       || _gtk_tree_view_find_node (tree_view,
13208                                    path,
13209                                    &tree_view->priv->cursor_tree,
13210                                    &tree_view->priv->cursor_node))
13211     {
13212       tree_view->priv->cursor_tree = NULL;
13213       tree_view->priv->cursor_node = NULL;
13214     }
13215
13216   if (tree_view->priv->cursor_node != NULL)
13217     {
13218       GtkRBTree *new_tree = NULL;
13219       GtkRBNode *new_node = NULL;
13220
13221       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13222         {
13223           GtkTreeSelectMode mode = 0;
13224
13225           if (tree_view->priv->extend_selection_pressed)
13226             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13227
13228           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13229                                                     tree_view->priv->cursor_node,
13230                                                     tree_view->priv->cursor_tree,
13231                                                     path,
13232                                                     mode,
13233                                                     FALSE);
13234         }
13235
13236       /* We have to re-find tree and node here again, somebody might have
13237        * cleared the node or the whole tree in the GtkTreeSelection::changed
13238        * callback. If the nodes differ we bail out here.
13239        */
13240       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13241
13242       if (tree_view->priv->cursor_node != new_node)
13243         return;
13244
13245       if (flags & CLAMP_NODE)
13246         {
13247           gtk_tree_view_clamp_node_visible (tree_view,
13248                                             tree_view->priv->cursor_tree,
13249                                             tree_view->priv->cursor_node);
13250           _gtk_tree_view_queue_draw_node (tree_view,
13251                                           tree_view->priv->cursor_tree,
13252                                           tree_view->priv->cursor_node,
13253                                           NULL);
13254         }
13255     }
13256
13257   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13258 }
13259
13260 /**
13261  * gtk_tree_view_get_cursor:
13262  * @tree_view: A #GtkTreeView
13263  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13264  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13265  *
13266  * Fills in @path and @focus_column with the current path and focus column.  If
13267  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13268  * currently has focus, then *@focus_column will be %NULL.
13269  *
13270  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13271  * you are done with it.
13272  **/
13273 void
13274 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13275                           GtkTreePath       **path,
13276                           GtkTreeViewColumn **focus_column)
13277 {
13278   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13279
13280   if (path)
13281     {
13282       if (tree_view->priv->cursor_node)
13283         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13284                                                 tree_view->priv->cursor_node);
13285       else
13286         *path = NULL;
13287     }
13288
13289   if (focus_column)
13290     {
13291       *focus_column = tree_view->priv->focus_column;
13292     }
13293 }
13294
13295 /**
13296  * gtk_tree_view_set_cursor:
13297  * @tree_view: A #GtkTreeView
13298  * @path: A #GtkTreePath
13299  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13300  * @start_editing: %TRUE if the specified cell should start being edited.
13301  *
13302  * Sets the current keyboard focus to be at @path, and selects it.  This is
13303  * useful when you want to focus the user's attention on a particular row.  If
13304  * @focus_column is not %NULL, then focus is given to the column specified by
13305  * it. Additionally, if @focus_column is specified, and @start_editing is
13306  * %TRUE, then editing should be started in the specified cell.
13307  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13308  * in order to give keyboard focus to the widget.  Please note that editing
13309  * can only happen when the widget is realized.
13310  *
13311  * If @path is invalid for @model, the current cursor (if any) will be unset
13312  * and the function will return without failing.
13313  **/
13314 void
13315 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13316                           GtkTreePath       *path,
13317                           GtkTreeViewColumn *focus_column,
13318                           gboolean           start_editing)
13319 {
13320   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13321                                     NULL, start_editing);
13322 }
13323
13324 /**
13325  * gtk_tree_view_set_cursor_on_cell:
13326  * @tree_view: A #GtkTreeView
13327  * @path: A #GtkTreePath
13328  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13329  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13330  * @start_editing: %TRUE if the specified cell should start being edited.
13331  *
13332  * Sets the current keyboard focus to be at @path, and selects it.  This is
13333  * useful when you want to focus the user's attention on a particular row.  If
13334  * @focus_column is not %NULL, then focus is given to the column specified by
13335  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13336  * contains 2 or more editable or activatable cells, then focus is given to
13337  * the cell specified by @focus_cell. Additionally, if @focus_column is
13338  * specified, and @start_editing is %TRUE, then editing should be started in
13339  * the specified cell.  This function is often followed by
13340  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13341  * widget.  Please note that editing can only happen when the widget is
13342  * realized.
13343  *
13344  * If @path is invalid for @model, the current cursor (if any) will be unset
13345  * and the function will return without failing.
13346  *
13347  * Since: 2.2
13348  **/
13349 void
13350 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13351                                   GtkTreePath       *path,
13352                                   GtkTreeViewColumn *focus_column,
13353                                   GtkCellRenderer   *focus_cell,
13354                                   gboolean           start_editing)
13355 {
13356   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13357   g_return_if_fail (path != NULL);
13358   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13359
13360   if (!tree_view->priv->model)
13361     return;
13362
13363   if (focus_cell)
13364     {
13365       g_return_if_fail (focus_column);
13366       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13367     }
13368
13369   /* cancel the current editing, if it exists */
13370   if (tree_view->priv->edited_column &&
13371       gtk_cell_area_get_edit_widget
13372       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13373     gtk_tree_view_stop_editing (tree_view, TRUE);
13374
13375   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13376
13377   if (focus_column &&
13378       gtk_tree_view_column_get_visible (focus_column))
13379     {
13380       GList *list;
13381       gboolean column_in_tree = FALSE;
13382
13383       for (list = tree_view->priv->columns; list; list = list->next)
13384         if (list->data == focus_column)
13385           {
13386             column_in_tree = TRUE;
13387             break;
13388           }
13389       g_return_if_fail (column_in_tree);
13390       _gtk_tree_view_set_focus_column (tree_view, focus_column);
13391       if (focus_cell)
13392         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13393       if (start_editing)
13394         gtk_tree_view_start_editing (tree_view, path, TRUE);
13395     }
13396 }
13397
13398 /**
13399  * gtk_tree_view_get_bin_window:
13400  * @tree_view: A #GtkTreeView
13401  *
13402  * Returns the window that @tree_view renders to.
13403  * This is used primarily to compare to <literal>event->window</literal>
13404  * to confirm that the event on @tree_view is on the right window.
13405  *
13406  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13407  *     hasn't been realized yet
13408  **/
13409 GdkWindow *
13410 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13411 {
13412   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13413
13414   return tree_view->priv->bin_window;
13415 }
13416
13417 /**
13418  * gtk_tree_view_get_path_at_pos:
13419  * @tree_view: A #GtkTreeView.
13420  * @x: The x position to be identified (relative to bin_window).
13421  * @y: The y position to be identified (relative to bin_window).
13422  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13423  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13424  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13425  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13426  *
13427  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13428  * (please see gtk_tree_view_get_bin_window()).
13429  * That is, @x and @y are relative to an events coordinates. @x and @y must
13430  * come from an event on the @tree_view only where <literal>event->window ==
13431  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13432  * things like popup menus. If @path is non-%NULL, then it will be filled
13433  * with the #GtkTreePath at that point.  This path should be freed with
13434  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13435  * with the column at that point.  @cell_x and @cell_y return the coordinates
13436  * relative to the cell background (i.e. the @background_area passed to
13437  * gtk_cell_renderer_render()).  This function is only meaningful if
13438  * @tree_view is realized.  Therefore this function will always return %FALSE
13439  * if @tree_view is not realized or does not have a model.
13440  *
13441  * For converting widget coordinates (eg. the ones you get from
13442  * GtkWidget::query-tooltip), please see
13443  * gtk_tree_view_convert_widget_to_bin_window_coords().
13444  *
13445  * Return value: %TRUE if a row exists at that coordinate.
13446  **/
13447 gboolean
13448 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13449                                gint                x,
13450                                gint                y,
13451                                GtkTreePath       **path,
13452                                GtkTreeViewColumn **column,
13453                                gint               *cell_x,
13454                                gint               *cell_y)
13455 {
13456   GtkRBTree *tree;
13457   GtkRBNode *node;
13458   gint y_offset;
13459
13460   g_return_val_if_fail (tree_view != NULL, FALSE);
13461
13462   if (path)
13463     *path = NULL;
13464   if (column)
13465     *column = NULL;
13466
13467   if (tree_view->priv->bin_window == NULL)
13468     return FALSE;
13469
13470   if (tree_view->priv->tree == NULL)
13471     return FALSE;
13472
13473   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13474     return FALSE;
13475
13476   if (x < 0 || y < 0)
13477     return FALSE;
13478
13479   if (column || cell_x)
13480     {
13481       GtkTreeViewColumn *tmp_column;
13482       GtkTreeViewColumn *last_column = NULL;
13483       GList *list;
13484       gint remaining_x = x;
13485       gboolean found = FALSE;
13486       gboolean rtl;
13487       gint width;
13488
13489       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13490       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13491            list;
13492            list = (rtl ? list->prev : list->next))
13493         {
13494           tmp_column = list->data;
13495
13496           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13497             continue;
13498
13499           last_column = tmp_column;
13500           width = gtk_tree_view_column_get_width (tmp_column);
13501           if (remaining_x <= width)
13502             {
13503               found = TRUE;
13504
13505               if (column)
13506                 *column = tmp_column;
13507
13508               if (cell_x)
13509                 *cell_x = remaining_x;
13510
13511               break;
13512             }
13513           remaining_x -= width;
13514         }
13515
13516       /* If found is FALSE and there is a last_column, then it the remainder
13517        * space is in that area
13518        */
13519       if (!found)
13520         {
13521           if (last_column)
13522             {
13523               if (column)
13524                 *column = last_column;
13525
13526               if (cell_x)
13527                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13528             }
13529           else
13530             {
13531               return FALSE;
13532             }
13533         }
13534     }
13535
13536   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13537                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13538                                       &tree, &node);
13539
13540   if (tree == NULL)
13541     return FALSE;
13542
13543   if (cell_y)
13544     *cell_y = y_offset;
13545
13546   if (path)
13547     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13548
13549   return TRUE;
13550 }
13551
13552
13553 static inline gint
13554 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13555                                     GtkRBNode   *node,
13556                                     gint         vertical_separator)
13557 {
13558   int height;
13559
13560   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13561    * i.e. just the cells, no spacing.
13562    *
13563    * The cell area height is at least expander_size - vertical_separator.
13564    * For regular nodes, the height is then at least expander_size. We should
13565    * be able to enforce the expander_size minimum here, because this
13566    * function will not be called for irregular (e.g. separator) rows.
13567    */
13568   height = gtk_tree_view_get_row_height (tree_view, node);
13569   if (height < tree_view->priv->expander_size)
13570     height = tree_view->priv->expander_size;
13571
13572   return height - vertical_separator;
13573 }
13574
13575 static inline gint
13576 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13577                                       GtkRBTree   *tree,
13578                                       GtkRBNode   *node,
13579                                       gint         vertical_separator)
13580 {
13581   int offset;
13582
13583   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13584   offset += vertical_separator / 2;
13585
13586   return offset;
13587 }
13588
13589 /**
13590  * gtk_tree_view_get_cell_area:
13591  * @tree_view: a #GtkTreeView
13592  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13593  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13594  * @rect: (out): rectangle to fill with cell rect
13595  *
13596  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13597  * row specified by @path and the column specified by @column.  If @path is
13598  * %NULL, or points to a path not currently displayed, the @y and @height fields
13599  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13600  * fields will be filled with 0.  The sum of all cell rects does not cover the
13601  * entire tree; there are extra pixels in between rows, for example. The
13602  * returned rectangle is equivalent to the @cell_area passed to
13603  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13604  * realized.
13605  **/
13606 void
13607 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13608                              GtkTreePath        *path,
13609                              GtkTreeViewColumn  *column,
13610                              GdkRectangle       *rect)
13611 {
13612   GtkRBTree *tree = NULL;
13613   GtkRBNode *node = NULL;
13614   gint vertical_separator;
13615   gint horizontal_separator;
13616
13617   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13618   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13619   g_return_if_fail (rect != NULL);
13620   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13621   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13622
13623   gtk_widget_style_get (GTK_WIDGET (tree_view),
13624                         "vertical-separator", &vertical_separator,
13625                         "horizontal-separator", &horizontal_separator,
13626                         NULL);
13627
13628   rect->x = 0;
13629   rect->y = 0;
13630   rect->width = 0;
13631   rect->height = 0;
13632
13633   if (column)
13634     {
13635       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13636       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13637     }
13638
13639   if (path)
13640     {
13641       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13642
13643       /* Get vertical coords */
13644       if ((!ret && tree == NULL) || ret)
13645         return;
13646
13647       if (row_is_separator (tree_view, NULL, path))
13648         {
13649           /* There isn't really a "cell area" for separator, so we
13650            * return the y, height values for background area instead.
13651            */
13652           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13653           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13654         }
13655       else
13656         {
13657           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13658                                                           vertical_separator);
13659           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13660                                                              vertical_separator);
13661         }
13662
13663       if (column &&
13664           gtk_tree_view_is_expander_column (tree_view, column))
13665         {
13666           gint depth = gtk_tree_path_get_depth (path);
13667           gboolean rtl;
13668
13669           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13670
13671           if (!rtl)
13672             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13673           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13674
13675           if (gtk_tree_view_draw_expanders (tree_view))
13676             {
13677               if (!rtl)
13678                 rect->x += depth * tree_view->priv->expander_size;
13679               rect->width -= depth * tree_view->priv->expander_size;
13680             }
13681
13682           rect->width = MAX (rect->width, 0);
13683         }
13684     }
13685 }
13686
13687 static inline gint
13688 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13689                               GtkRBNode   *node)
13690 {
13691   int height;
13692
13693   /* The "background" areas of all rows/cells add up to cover the entire tree.
13694    * The background includes all inter-row and inter-cell spacing.
13695    *
13696    * If the row pointed at by node does not have a height set, we default
13697    * to expander_size, which is the minimum height for regular nodes.
13698    * Non-regular nodes (e.g. separators) can have a height set smaller
13699    * than expander_size and should not be overruled here.
13700    */
13701   height = GTK_RBNODE_GET_HEIGHT (node);
13702   if (height <= 0)
13703     height = tree_view->priv->expander_size;
13704
13705   return height;
13706 }
13707
13708 static inline gint
13709 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13710                                 GtkRBTree   *tree,
13711                                 GtkRBNode   *node)
13712 {
13713   int offset;
13714
13715   offset = _gtk_rbtree_node_find_offset (tree, node);
13716
13717   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13718 }
13719
13720 /**
13721  * gtk_tree_view_get_background_area:
13722  * @tree_view: a #GtkTreeView
13723  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13724  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13725  * @rect: (out): rectangle to fill with cell background rect
13726  *
13727  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13728  * row specified by @path and the column specified by @column.  If @path is
13729  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13730  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13731  * fields will be filled with 0.  The returned rectangle is equivalent to the
13732  * @background_area passed to gtk_cell_renderer_render().  These background
13733  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13734  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13735  * itself, excluding surrounding borders and the tree expander area.
13736  *
13737  **/
13738 void
13739 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13740                                    GtkTreePath        *path,
13741                                    GtkTreeViewColumn  *column,
13742                                    GdkRectangle       *rect)
13743 {
13744   GtkRBTree *tree = NULL;
13745   GtkRBNode *node = NULL;
13746
13747   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13748   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13749   g_return_if_fail (rect != NULL);
13750
13751   rect->x = 0;
13752   rect->y = 0;
13753   rect->width = 0;
13754   rect->height = 0;
13755
13756   if (path)
13757     {
13758       /* Get vertical coords */
13759
13760       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13761           tree == NULL)
13762         return;
13763
13764       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13765       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13766     }
13767
13768   if (column)
13769     {
13770       gint x2 = 0;
13771
13772       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13773       rect->width = x2 - rect->x;
13774     }
13775 }
13776
13777 /**
13778  * gtk_tree_view_get_visible_rect:
13779  * @tree_view: a #GtkTreeView
13780  * @visible_rect: (out): rectangle to fill
13781  *
13782  * Fills @visible_rect with the currently-visible region of the
13783  * buffer, in tree coordinates. Convert to bin_window coordinates with
13784  * gtk_tree_view_convert_tree_to_bin_window_coords().
13785  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13786  * scrollable area of the tree.
13787  **/
13788 void
13789 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13790                                 GdkRectangle *visible_rect)
13791 {
13792   GtkAllocation allocation;
13793   GtkWidget *widget;
13794
13795   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13796
13797   widget = GTK_WIDGET (tree_view);
13798
13799   if (visible_rect)
13800     {
13801       gtk_widget_get_allocation (widget, &allocation);
13802       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13803       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13804       visible_rect->width = allocation.width;
13805       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13806     }
13807 }
13808
13809 /**
13810  * gtk_tree_view_convert_widget_to_tree_coords:
13811  * @tree_view: a #GtkTreeView
13812  * @wx: X coordinate relative to the widget
13813  * @wy: Y coordinate relative to the widget
13814  * @tx: (out): return location for tree X coordinate
13815  * @ty: (out): return location for tree Y coordinate
13816  *
13817  * Converts widget coordinates to coordinates for the
13818  * tree (the full scrollable area of the tree).
13819  *
13820  * Since: 2.12
13821  **/
13822 void
13823 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13824                                              gint         wx,
13825                                              gint         wy,
13826                                              gint        *tx,
13827                                              gint        *ty)
13828 {
13829   gint x, y;
13830
13831   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13832
13833   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13834                                                      wx, wy,
13835                                                      &x, &y);
13836   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13837                                                    x, y,
13838                                                    tx, ty);
13839 }
13840
13841 /**
13842  * gtk_tree_view_convert_tree_to_widget_coords:
13843  * @tree_view: a #GtkTreeView
13844  * @tx: X coordinate relative to the tree
13845  * @ty: Y coordinate relative to the tree
13846  * @wx: (out): return location for widget X coordinate
13847  * @wy: (out): return location for widget Y coordinate
13848  *
13849  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13850  * to widget coordinates.
13851  *
13852  * Since: 2.12
13853  **/
13854 void
13855 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13856                                              gint         tx,
13857                                              gint         ty,
13858                                              gint        *wx,
13859                                              gint        *wy)
13860 {
13861   gint x, y;
13862
13863   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13864
13865   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13866                                                    tx, ty,
13867                                                    &x, &y);
13868   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13869                                                      x, y,
13870                                                      wx, wy);
13871 }
13872
13873 /**
13874  * gtk_tree_view_convert_widget_to_bin_window_coords:
13875  * @tree_view: a #GtkTreeView
13876  * @wx: X coordinate relative to the widget
13877  * @wy: Y coordinate relative to the widget
13878  * @bx: (out): return location for bin_window X coordinate
13879  * @by: (out): return location for bin_window Y coordinate
13880  *
13881  * Converts widget coordinates to coordinates for the bin_window
13882  * (see gtk_tree_view_get_bin_window()).
13883  *
13884  * Since: 2.12
13885  **/
13886 void
13887 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13888                                                    gint         wx,
13889                                                    gint         wy,
13890                                                    gint        *bx,
13891                                                    gint        *by)
13892 {
13893   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13894
13895   if (bx)
13896     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13897   if (by)
13898     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13899 }
13900
13901 /**
13902  * gtk_tree_view_convert_bin_window_to_widget_coords:
13903  * @tree_view: a #GtkTreeView
13904  * @bx: bin_window X coordinate
13905  * @by: bin_window Y coordinate
13906  * @wx: (out): return location for widget X coordinate
13907  * @wy: (out): return location for widget Y coordinate
13908  *
13909  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13910  * to widget relative coordinates.
13911  *
13912  * Since: 2.12
13913  **/
13914 void
13915 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13916                                                    gint         bx,
13917                                                    gint         by,
13918                                                    gint        *wx,
13919                                                    gint        *wy)
13920 {
13921   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13922
13923   if (wx)
13924     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13925   if (wy)
13926     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13927 }
13928
13929 /**
13930  * gtk_tree_view_convert_tree_to_bin_window_coords:
13931  * @tree_view: a #GtkTreeView
13932  * @tx: tree X coordinate
13933  * @ty: tree Y coordinate
13934  * @bx: (out): return location for X coordinate relative to bin_window
13935  * @by: (out): return location for Y coordinate relative to bin_window
13936  *
13937  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13938  * to bin_window coordinates.
13939  *
13940  * Since: 2.12
13941  **/
13942 void
13943 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13944                                                  gint         tx,
13945                                                  gint         ty,
13946                                                  gint        *bx,
13947                                                  gint        *by)
13948 {
13949   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13950
13951   if (bx)
13952     *bx = tx;
13953   if (by)
13954     *by = ty - tree_view->priv->dy;
13955 }
13956
13957 /**
13958  * gtk_tree_view_convert_bin_window_to_tree_coords:
13959  * @tree_view: a #GtkTreeView
13960  * @bx: X coordinate relative to bin_window
13961  * @by: Y coordinate relative to bin_window
13962  * @tx: (out): return location for tree X coordinate
13963  * @ty: (out): return location for tree Y coordinate
13964  *
13965  * Converts bin_window coordinates to coordinates for the
13966  * tree (the full scrollable area of the tree).
13967  *
13968  * Since: 2.12
13969  **/
13970 void
13971 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13972                                                  gint         bx,
13973                                                  gint         by,
13974                                                  gint        *tx,
13975                                                  gint        *ty)
13976 {
13977   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13978
13979   if (tx)
13980     *tx = bx;
13981   if (ty)
13982     *ty = by + tree_view->priv->dy;
13983 }
13984
13985
13986
13987 /**
13988  * gtk_tree_view_get_visible_range:
13989  * @tree_view: A #GtkTreeView
13990  * @start_path: (out) (allow-none): Return location for start of region,
13991  *              or %NULL.
13992  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13993  *
13994  * Sets @start_path and @end_path to be the first and last visible path.
13995  * Note that there may be invisible paths in between.
13996  *
13997  * The paths should be freed with gtk_tree_path_free() after use.
13998  *
13999  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
14000  *
14001  * Since: 2.8
14002  **/
14003 gboolean
14004 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
14005                                  GtkTreePath **start_path,
14006                                  GtkTreePath **end_path)
14007 {
14008   GtkRBTree *tree;
14009   GtkRBNode *node;
14010   gboolean retval;
14011
14012   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14013
14014   if (!tree_view->priv->tree)
14015     return FALSE;
14016
14017   retval = TRUE;
14018
14019   if (start_path)
14020     {
14021       _gtk_rbtree_find_offset (tree_view->priv->tree,
14022                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14023                                &tree, &node);
14024       if (node)
14025         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
14026       else
14027         retval = FALSE;
14028     }
14029
14030   if (end_path)
14031     {
14032       gint y;
14033
14034       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14035         y = tree_view->priv->height - 1;
14036       else
14037         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14038
14039       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14040       if (node)
14041         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14042       else
14043         retval = FALSE;
14044     }
14045
14046   return retval;
14047 }
14048
14049 /**
14050  * gtk_tree_view_is_blank_at_pos:
14051  * @tree_view: A #GtkTreeView
14052  * @x: The x position to be identified (relative to bin_window)
14053  * @y: The y position to be identified (relative to bin_window)
14054  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14055  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14056  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14057  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14058  *
14059  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14060  * cell content nor an expander arrow is drawn at the location. If so, the
14061  * location can be considered as the background. You might wish to take
14062  * special action on clicks on the background, such as clearing a current
14063  * selection, having a custom context menu or starting rubber banding.
14064  *
14065  * The @x and @y coordinate that are provided must be relative to bin_window
14066  * coordinates.  That is, @x and @y must come from an event on @tree_view
14067  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14068  *
14069  * For converting widget coordinates (eg. the ones you get from
14070  * GtkWidget::query-tooltip), please see
14071  * gtk_tree_view_convert_widget_to_bin_window_coords().
14072  *
14073  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14074  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14075  * gtk_tree_view_get_path_at_pos() for more information.
14076  *
14077  * Return value: %TRUE if the area at the given coordinates is blank,
14078  * %FALSE otherwise.
14079  *
14080  * Since: 3.0
14081  */
14082 gboolean
14083 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14084                                gint                x,
14085                                gint                y,
14086                                GtkTreePath       **path,
14087                                GtkTreeViewColumn **column,
14088                                gint               *cell_x,
14089                                gint               *cell_y)
14090 {
14091   GtkRBTree *tree;
14092   GtkRBNode *node;
14093   GtkTreeIter iter;
14094   GtkTreePath *real_path;
14095   GtkTreeViewColumn *real_column;
14096   GdkRectangle cell_area, background_area;
14097
14098   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14099
14100   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14101                                       &real_path, &real_column,
14102                                       cell_x, cell_y))
14103     /* If there's no path here, it is blank */
14104     return TRUE;
14105
14106   if (path)
14107     *path = real_path;
14108
14109   if (column)
14110     *column = real_column;
14111
14112   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14113   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14114
14115   /* Check if there's an expander arrow at (x, y) */
14116   if (real_column == tree_view->priv->expander_column
14117       && gtk_tree_view_draw_expanders (tree_view))
14118     {
14119       gboolean over_arrow;
14120
14121       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14122
14123       if (over_arrow)
14124         {
14125           if (!path)
14126             gtk_tree_path_free (real_path);
14127           return FALSE;
14128         }
14129     }
14130
14131   /* Otherwise, have the column see if there's a cell at (x, y) */
14132   gtk_tree_view_column_cell_set_cell_data (real_column,
14133                                            tree_view->priv->model,
14134                                            &iter,
14135                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14136                                            node->children ? TRUE : FALSE);
14137
14138   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14139                                      &background_area);
14140   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14141                                &cell_area);
14142
14143   if (!path)
14144     gtk_tree_path_free (real_path);
14145
14146   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14147                                                 &cell_area,
14148                                                 &background_area,
14149                                                 x, y);
14150 }
14151
14152 static void
14153 unset_reorderable (GtkTreeView *tree_view)
14154 {
14155   if (tree_view->priv->reorderable)
14156     {
14157       tree_view->priv->reorderable = FALSE;
14158       g_object_notify (G_OBJECT (tree_view), "reorderable");
14159     }
14160 }
14161
14162 /**
14163  * gtk_tree_view_enable_model_drag_source:
14164  * @tree_view: a #GtkTreeView
14165  * @start_button_mask: Mask of allowed buttons to start drag
14166  * @targets: (array length=n_targets): the table of targets that the drag will support
14167  * @n_targets: the number of items in @targets
14168  * @actions: the bitmask of possible actions for a drag from this
14169  *    widget
14170  *
14171  * Turns @tree_view into a drag source for automatic DND. Calling this
14172  * method sets #GtkTreeView:reorderable to %FALSE.
14173  **/
14174 void
14175 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14176                                         GdkModifierType           start_button_mask,
14177                                         const GtkTargetEntry     *targets,
14178                                         gint                      n_targets,
14179                                         GdkDragAction             actions)
14180 {
14181   TreeViewDragInfo *di;
14182
14183   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14184
14185   gtk_drag_source_set (GTK_WIDGET (tree_view),
14186                        0,
14187                        targets,
14188                        n_targets,
14189                        actions);
14190
14191   di = ensure_info (tree_view);
14192
14193   di->start_button_mask = start_button_mask;
14194   di->source_actions = actions;
14195   di->source_set = TRUE;
14196
14197   unset_reorderable (tree_view);
14198 }
14199
14200 /**
14201  * gtk_tree_view_enable_model_drag_dest:
14202  * @tree_view: a #GtkTreeView
14203  * @targets: (array length=n_targets): the table of targets that
14204  *           the drag will support
14205  * @n_targets: the number of items in @targets
14206  * @actions: the bitmask of possible actions for a drag from this
14207  *    widget
14208  *
14209  * Turns @tree_view into a drop destination for automatic DND. Calling
14210  * this method sets #GtkTreeView:reorderable to %FALSE.
14211  **/
14212 void
14213 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14214                                       const GtkTargetEntry     *targets,
14215                                       gint                      n_targets,
14216                                       GdkDragAction             actions)
14217 {
14218   TreeViewDragInfo *di;
14219
14220   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14221
14222   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14223                      0,
14224                      targets,
14225                      n_targets,
14226                      actions);
14227
14228   di = ensure_info (tree_view);
14229   di->dest_set = TRUE;
14230
14231   unset_reorderable (tree_view);
14232 }
14233
14234 /**
14235  * gtk_tree_view_unset_rows_drag_source:
14236  * @tree_view: a #GtkTreeView
14237  *
14238  * Undoes the effect of
14239  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14240  * #GtkTreeView:reorderable to %FALSE.
14241  **/
14242 void
14243 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14244 {
14245   TreeViewDragInfo *di;
14246
14247   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14248
14249   di = get_info (tree_view);
14250
14251   if (di)
14252     {
14253       if (di->source_set)
14254         {
14255           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14256           di->source_set = FALSE;
14257         }
14258
14259       if (!di->dest_set && !di->source_set)
14260         remove_info (tree_view);
14261     }
14262
14263   unset_reorderable (tree_view);
14264 }
14265
14266 /**
14267  * gtk_tree_view_unset_rows_drag_dest:
14268  * @tree_view: a #GtkTreeView
14269  *
14270  * Undoes the effect of
14271  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14272  * #GtkTreeView:reorderable to %FALSE.
14273  **/
14274 void
14275 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14276 {
14277   TreeViewDragInfo *di;
14278
14279   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14280
14281   di = get_info (tree_view);
14282
14283   if (di)
14284     {
14285       if (di->dest_set)
14286         {
14287           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14288           di->dest_set = FALSE;
14289         }
14290
14291       if (!di->dest_set && !di->source_set)
14292         remove_info (tree_view);
14293     }
14294
14295   unset_reorderable (tree_view);
14296 }
14297
14298 /**
14299  * gtk_tree_view_set_drag_dest_row:
14300  * @tree_view: a #GtkTreeView
14301  * @path: (allow-none): The path of the row to highlight, or %NULL
14302  * @pos: Specifies whether to drop before, after or into the row
14303  *
14304  * Sets the row that is highlighted for feedback.
14305  * If @path is %NULL, an existing highlight is removed.
14306  */
14307 void
14308 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14309                                  GtkTreePath            *path,
14310                                  GtkTreeViewDropPosition pos)
14311 {
14312   GtkTreePath *current_dest;
14313
14314   /* Note; this function is exported to allow a custom DND
14315    * implementation, so it can't touch TreeViewDragInfo
14316    */
14317
14318   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14319
14320   current_dest = NULL;
14321
14322   if (tree_view->priv->drag_dest_row)
14323     {
14324       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14325       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14326     }
14327
14328   /* special case a drop on an empty model */
14329   tree_view->priv->empty_view_drop = 0;
14330
14331   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14332       && gtk_tree_path_get_depth (path) == 1
14333       && gtk_tree_path_get_indices (path)[0] == 0)
14334     {
14335       gint n_children;
14336
14337       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14338                                                    NULL);
14339
14340       if (!n_children)
14341         tree_view->priv->empty_view_drop = 1;
14342     }
14343
14344   tree_view->priv->drag_dest_pos = pos;
14345
14346   if (path)
14347     {
14348       tree_view->priv->drag_dest_row =
14349         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14350       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14351     }
14352   else
14353     tree_view->priv->drag_dest_row = NULL;
14354
14355   if (current_dest)
14356     {
14357       GtkRBTree *tree, *new_tree;
14358       GtkRBNode *node, *new_node;
14359
14360       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14361       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14362
14363       if (tree && node)
14364         {
14365           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14366           if (new_tree && new_node)
14367             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14368
14369           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14370           if (new_tree && new_node)
14371             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14372         }
14373       gtk_tree_path_free (current_dest);
14374     }
14375 }
14376
14377 /**
14378  * gtk_tree_view_get_drag_dest_row:
14379  * @tree_view: a #GtkTreeView
14380  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14381  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14382  *
14383  * Gets information about the row that is highlighted for feedback.
14384  **/
14385 void
14386 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14387                                  GtkTreePath             **path,
14388                                  GtkTreeViewDropPosition  *pos)
14389 {
14390   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14391
14392   if (path)
14393     {
14394       if (tree_view->priv->drag_dest_row)
14395         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14396       else
14397         {
14398           if (tree_view->priv->empty_view_drop)
14399             *path = gtk_tree_path_new_from_indices (0, -1);
14400           else
14401             *path = NULL;
14402         }
14403     }
14404
14405   if (pos)
14406     *pos = tree_view->priv->drag_dest_pos;
14407 }
14408
14409 /**
14410  * gtk_tree_view_get_dest_row_at_pos:
14411  * @tree_view: a #GtkTreeView
14412  * @drag_x: the position to determine the destination row for
14413  * @drag_y: the position to determine the destination row for
14414  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14415  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14416  *
14417  * Determines the destination row for a given position.  @drag_x and
14418  * @drag_y are expected to be in widget coordinates.  This function is only
14419  * meaningful if @tree_view is realized.  Therefore this function will always
14420  * return %FALSE if @tree_view is not realized or does not have a model.
14421  *
14422  * Return value: whether there is a row at the given position, %TRUE if this
14423  * is indeed the case.
14424  **/
14425 gboolean
14426 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14427                                    gint                     drag_x,
14428                                    gint                     drag_y,
14429                                    GtkTreePath            **path,
14430                                    GtkTreeViewDropPosition *pos)
14431 {
14432   gint cell_y;
14433   gint bin_x, bin_y;
14434   gdouble offset_into_row;
14435   gdouble third;
14436   GdkRectangle cell;
14437   GtkTreeViewColumn *column = NULL;
14438   GtkTreePath *tmp_path = NULL;
14439
14440   /* Note; this function is exported to allow a custom DND
14441    * implementation, so it can't touch TreeViewDragInfo
14442    */
14443
14444   g_return_val_if_fail (tree_view != NULL, FALSE);
14445   g_return_val_if_fail (drag_x >= 0, FALSE);
14446   g_return_val_if_fail (drag_y >= 0, FALSE);
14447
14448   if (path)
14449     *path = NULL;
14450
14451   if (tree_view->priv->bin_window == NULL)
14452     return FALSE;
14453
14454   if (tree_view->priv->tree == NULL)
14455     return FALSE;
14456
14457   /* If in the top third of a row, we drop before that row; if
14458    * in the bottom third, drop after that row; if in the middle,
14459    * and the row has children, drop into the row.
14460    */
14461   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14462                                                      &bin_x, &bin_y);
14463
14464   if (!gtk_tree_view_get_path_at_pos (tree_view,
14465                                       bin_x,
14466                                       bin_y,
14467                                       &tmp_path,
14468                                       &column,
14469                                       NULL,
14470                                       &cell_y))
14471     return FALSE;
14472
14473   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14474                                      &cell);
14475
14476   offset_into_row = cell_y;
14477
14478   if (path)
14479     *path = tmp_path;
14480   else
14481     gtk_tree_path_free (tmp_path);
14482
14483   tmp_path = NULL;
14484
14485   third = cell.height / 3.0;
14486
14487   if (pos)
14488     {
14489       if (offset_into_row < third)
14490         {
14491           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14492         }
14493       else if (offset_into_row < (cell.height / 2.0))
14494         {
14495           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14496         }
14497       else if (offset_into_row < third * 2.0)
14498         {
14499           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14500         }
14501       else
14502         {
14503           *pos = GTK_TREE_VIEW_DROP_AFTER;
14504         }
14505     }
14506
14507   return TRUE;
14508 }
14509
14510
14511
14512 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14513 /**
14514  * gtk_tree_view_create_row_drag_icon:
14515  * @tree_view: a #GtkTreeView
14516  * @path: a #GtkTreePath in @tree_view
14517  *
14518  * Creates a #cairo_surface_t representation of the row at @path.
14519  * This image is used for a drag icon.
14520  *
14521  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14522  **/
14523 cairo_surface_t *
14524 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14525                                     GtkTreePath  *path)
14526 {
14527   GtkTreeIter   iter;
14528   GtkRBTree    *tree;
14529   GtkRBNode    *node;
14530   GtkStyleContext *context;
14531   gint cell_offset;
14532   GList *list;
14533   GdkRectangle background_area;
14534   GtkWidget *widget;
14535   gint depth;
14536   /* start drawing inside the black outline */
14537   gint x = 1, y = 1;
14538   cairo_surface_t *surface;
14539   gint bin_window_width;
14540   gboolean is_separator = FALSE;
14541   gboolean rtl, allow_rules;
14542   cairo_t *cr;
14543
14544   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14545   g_return_val_if_fail (path != NULL, NULL);
14546
14547   widget = GTK_WIDGET (tree_view);
14548
14549   if (!gtk_widget_get_realized (widget))
14550     return NULL;
14551
14552   depth = gtk_tree_path_get_depth (path);
14553
14554   _gtk_tree_view_find_node (tree_view,
14555                             path,
14556                             &tree,
14557                             &node);
14558
14559   if (tree == NULL)
14560     return NULL;
14561
14562   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14563                                 &iter,
14564                                 path))
14565     return NULL;
14566
14567   context = gtk_widget_get_style_context (widget);
14568
14569   gtk_style_context_save (context);
14570
14571   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14572   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14573
14574   gtk_widget_style_get (widget,
14575                         "allow-rules", &allow_rules,
14576                         NULL);
14577
14578   if (allow_rules && tree_view->priv->has_rules)
14579     {
14580       GtkRegionFlags row_flags;
14581
14582       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14583         row_flags = GTK_REGION_ODD;
14584       else
14585         row_flags = GTK_REGION_EVEN;
14586
14587       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14588     }
14589
14590   is_separator = row_is_separator (tree_view, &iter, NULL);
14591
14592   cell_offset = x;
14593
14594   background_area.y = y;
14595   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14596
14597   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14598
14599   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14600                                                CAIRO_CONTENT_COLOR,
14601                                                bin_window_width + 2,
14602                                                background_area.height + 2);
14603
14604   cr = cairo_create (surface);
14605
14606   gtk_render_background (context, cr, 0, 0,
14607                          bin_window_width + 2,
14608                          background_area.height + 2);
14609
14610   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14611
14612   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14613       list;
14614       list = (rtl ? list->prev : list->next))
14615     {
14616       GtkTreeViewColumn *column = list->data;
14617       GdkRectangle cell_area;
14618       gint vertical_separator;
14619
14620       if (!gtk_tree_view_column_get_visible (column))
14621         continue;
14622
14623       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14624                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14625                                                node->children?TRUE:FALSE);
14626
14627       background_area.x = cell_offset;
14628       background_area.width = gtk_tree_view_column_get_width (column);
14629
14630       gtk_widget_style_get (widget,
14631                             "vertical-separator", &vertical_separator,
14632                             NULL);
14633
14634       cell_area = background_area;
14635
14636       cell_area.y += vertical_separator / 2;
14637       cell_area.height -= vertical_separator;
14638
14639       if (gtk_tree_view_is_expander_column (tree_view, column))
14640         {
14641           if (!rtl)
14642             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14643           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14644
14645           if (gtk_tree_view_draw_expanders (tree_view))
14646             {
14647               if (!rtl)
14648                 cell_area.x += depth * tree_view->priv->expander_size;
14649               cell_area.width -= depth * tree_view->priv->expander_size;
14650             }
14651         }
14652
14653       if (gtk_tree_view_column_cell_is_visible (column))
14654         {
14655           if (is_separator)
14656             {
14657               gtk_style_context_save (context);
14658               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14659
14660               gtk_render_line (context, cr,
14661                                cell_area.x,
14662                                cell_area.y + cell_area.height / 2,
14663                                cell_area.x + cell_area.width,
14664                                cell_area.y + cell_area.height / 2);
14665
14666               gtk_style_context_restore (context);
14667             }
14668           else
14669             {
14670               _gtk_tree_view_column_cell_render (column,
14671                                                  cr,
14672                                                  &background_area,
14673                                                  &cell_area,
14674                                                  0, FALSE);
14675             }
14676         }
14677       cell_offset += gtk_tree_view_column_get_width (column);
14678     }
14679
14680   cairo_set_source_rgb (cr, 0, 0, 0);
14681   cairo_rectangle (cr,
14682                    0.5, 0.5,
14683                    bin_window_width + 1,
14684                    background_area.height + 1);
14685   cairo_set_line_width (cr, 1.0);
14686   cairo_stroke (cr);
14687
14688   cairo_destroy (cr);
14689
14690   cairo_surface_set_device_offset (surface, 2, 2);
14691
14692   gtk_style_context_restore (context);
14693
14694   return surface;
14695 }
14696
14697
14698 /**
14699  * gtk_tree_view_set_destroy_count_func:
14700  * @tree_view: A #GtkTreeView
14701  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14702  * @data: (allow-none): User data to be passed to @func, or %NULL
14703  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14704  *
14705  * This function should almost never be used.  It is meant for private use by
14706  * ATK for determining the number of visible children that are removed when the
14707  * user collapses a row, or a row is deleted.
14708  *
14709  * Deprecated: 3.4: Accessibility does not need the function anymore.
14710  **/
14711 void
14712 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14713                                       GtkTreeDestroyCountFunc  func,
14714                                       gpointer                 data,
14715                                       GDestroyNotify           destroy)
14716 {
14717   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14718
14719   if (tree_view->priv->destroy_count_destroy)
14720     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14721
14722   tree_view->priv->destroy_count_func = func;
14723   tree_view->priv->destroy_count_data = data;
14724   tree_view->priv->destroy_count_destroy = destroy;
14725 }
14726
14727
14728 /*
14729  * Interactive search
14730  */
14731
14732 /**
14733  * gtk_tree_view_set_enable_search:
14734  * @tree_view: A #GtkTreeView
14735  * @enable_search: %TRUE, if the user can search interactively
14736  *
14737  * If @enable_search is set, then the user can type in text to search through
14738  * the tree interactively (this is sometimes called "typeahead find").
14739  *
14740  * Note that even if this is %FALSE, the user can still initiate a search
14741  * using the "start-interactive-search" key binding.
14742  */
14743 void
14744 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14745                                  gboolean     enable_search)
14746 {
14747   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14748
14749   enable_search = !!enable_search;
14750
14751   if (tree_view->priv->enable_search != enable_search)
14752     {
14753        tree_view->priv->enable_search = enable_search;
14754        g_object_notify (G_OBJECT (tree_view), "enable-search");
14755     }
14756 }
14757
14758 /**
14759  * gtk_tree_view_get_enable_search:
14760  * @tree_view: A #GtkTreeView
14761  *
14762  * Returns whether or not the tree allows to start interactive searching
14763  * by typing in text.
14764  *
14765  * Return value: whether or not to let the user search interactively
14766  */
14767 gboolean
14768 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14769 {
14770   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14771
14772   return tree_view->priv->enable_search;
14773 }
14774
14775
14776 /**
14777  * gtk_tree_view_get_search_column:
14778  * @tree_view: A #GtkTreeView
14779  *
14780  * Gets the column searched on by the interactive search code.
14781  *
14782  * Return value: the column the interactive search code searches in.
14783  */
14784 gint
14785 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14786 {
14787   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14788
14789   return (tree_view->priv->search_column);
14790 }
14791
14792 /**
14793  * gtk_tree_view_set_search_column:
14794  * @tree_view: A #GtkTreeView
14795  * @column: the column of the model to search in, or -1 to disable searching
14796  *
14797  * Sets @column as the column where the interactive search code should
14798  * search in for the current model.
14799  *
14800  * If the search column is set, users can use the "start-interactive-search"
14801  * key binding to bring up search popup. The enable-search property controls
14802  * whether simply typing text will also start an interactive search.
14803  *
14804  * Note that @column refers to a column of the current model. The search
14805  * column is reset to -1 when the model is changed.
14806  */
14807 void
14808 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14809                                  gint         column)
14810 {
14811   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14812   g_return_if_fail (column >= -1);
14813
14814   if (tree_view->priv->search_column == column)
14815     return;
14816
14817   tree_view->priv->search_column = column;
14818   g_object_notify (G_OBJECT (tree_view), "search-column");
14819 }
14820
14821 /**
14822  * gtk_tree_view_get_search_equal_func: (skip)
14823  * @tree_view: A #GtkTreeView
14824  *
14825  * Returns the compare function currently in use.
14826  *
14827  * Return value: the currently used compare function for the search code.
14828  */
14829
14830 GtkTreeViewSearchEqualFunc
14831 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14832 {
14833   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14834
14835   return tree_view->priv->search_equal_func;
14836 }
14837
14838 /**
14839  * gtk_tree_view_set_search_equal_func:
14840  * @tree_view: A #GtkTreeView
14841  * @search_equal_func: the compare function to use during the search
14842  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14843  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14844  *
14845  * Sets the compare function for the interactive search capabilities; note
14846  * that somewhat like strcmp() returning 0 for equality
14847  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14848  **/
14849 void
14850 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14851                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14852                                      gpointer                    search_user_data,
14853                                      GDestroyNotify              search_destroy)
14854 {
14855   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14856   g_return_if_fail (search_equal_func != NULL);
14857
14858   if (tree_view->priv->search_destroy)
14859     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14860
14861   tree_view->priv->search_equal_func = search_equal_func;
14862   tree_view->priv->search_user_data = search_user_data;
14863   tree_view->priv->search_destroy = search_destroy;
14864   if (tree_view->priv->search_equal_func == NULL)
14865     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14866 }
14867
14868 /**
14869  * gtk_tree_view_get_search_entry:
14870  * @tree_view: A #GtkTreeView
14871  *
14872  * Returns the #GtkEntry which is currently in use as interactive search
14873  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14874  * will be returned.
14875  *
14876  * Return value: (transfer none): the entry currently in use as search entry.
14877  *
14878  * Since: 2.10
14879  */
14880 GtkEntry *
14881 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14882 {
14883   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14884
14885   if (tree_view->priv->search_custom_entry_set)
14886     return GTK_ENTRY (tree_view->priv->search_entry);
14887
14888   return NULL;
14889 }
14890
14891 /**
14892  * gtk_tree_view_set_search_entry:
14893  * @tree_view: A #GtkTreeView
14894  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14895  *
14896  * Sets the entry which the interactive search code will use for this
14897  * @tree_view.  This is useful when you want to provide a search entry
14898  * in our interface at all time at a fixed position.  Passing %NULL for
14899  * @entry will make the interactive search code use the built-in popup
14900  * entry again.
14901  *
14902  * Since: 2.10
14903  */
14904 void
14905 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14906                                 GtkEntry    *entry)
14907 {
14908   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14909   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14910
14911   if (tree_view->priv->search_custom_entry_set)
14912     {
14913       if (tree_view->priv->search_entry_changed_id)
14914         {
14915           g_signal_handler_disconnect (tree_view->priv->search_entry,
14916                                        tree_view->priv->search_entry_changed_id);
14917           tree_view->priv->search_entry_changed_id = 0;
14918         }
14919       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14920                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14921                                             tree_view);
14922
14923       g_object_unref (tree_view->priv->search_entry);
14924     }
14925   else if (tree_view->priv->search_window)
14926     {
14927       gtk_widget_destroy (tree_view->priv->search_window);
14928
14929       tree_view->priv->search_window = NULL;
14930     }
14931
14932   if (entry)
14933     {
14934       tree_view->priv->search_entry = g_object_ref (entry);
14935       tree_view->priv->search_custom_entry_set = TRUE;
14936
14937       if (tree_view->priv->search_entry_changed_id == 0)
14938         {
14939           tree_view->priv->search_entry_changed_id =
14940             g_signal_connect (tree_view->priv->search_entry, "changed",
14941                               G_CALLBACK (gtk_tree_view_search_init),
14942                               tree_view);
14943         }
14944
14945         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14946                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14947                           tree_view);
14948
14949         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14950     }
14951   else
14952     {
14953       tree_view->priv->search_entry = NULL;
14954       tree_view->priv->search_custom_entry_set = FALSE;
14955     }
14956 }
14957
14958 /**
14959  * gtk_tree_view_set_search_position_func:
14960  * @tree_view: A #GtkTreeView
14961  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14962  *    to use the default search position function
14963  * @data: (allow-none): user data to pass to @func, or %NULL
14964  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14965  *
14966  * Sets the function to use when positioning the search dialog.
14967  *
14968  * Since: 2.10
14969  **/
14970 void
14971 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14972                                         GtkTreeViewSearchPositionFunc  func,
14973                                         gpointer                       user_data,
14974                                         GDestroyNotify                 destroy)
14975 {
14976   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14977
14978   if (tree_view->priv->search_position_destroy)
14979     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14980
14981   tree_view->priv->search_position_func = func;
14982   tree_view->priv->search_position_user_data = user_data;
14983   tree_view->priv->search_position_destroy = destroy;
14984   if (tree_view->priv->search_position_func == NULL)
14985     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14986 }
14987
14988 /**
14989  * gtk_tree_view_get_search_position_func: (skip)
14990  * @tree_view: A #GtkTreeView
14991  *
14992  * Returns the positioning function currently in use.
14993  *
14994  * Return value: the currently used function for positioning the search dialog.
14995  *
14996  * Since: 2.10
14997  */
14998 GtkTreeViewSearchPositionFunc
14999 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
15000 {
15001   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15002
15003   return tree_view->priv->search_position_func;
15004 }
15005
15006
15007 static void
15008 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15009                                   GtkTreeView *tree_view,
15010                                   GdkDevice   *device)
15011 {
15012   if (tree_view->priv->disable_popdown)
15013     return;
15014
15015   if (tree_view->priv->search_entry_changed_id)
15016     {
15017       g_signal_handler_disconnect (tree_view->priv->search_entry,
15018                                    tree_view->priv->search_entry_changed_id);
15019       tree_view->priv->search_entry_changed_id = 0;
15020     }
15021   if (tree_view->priv->typeselect_flush_timeout)
15022     {
15023       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15024       tree_view->priv->typeselect_flush_timeout = 0;
15025     }
15026
15027   if (gtk_widget_get_visible (search_dialog))
15028     {
15029       /* send focus-in event */
15030       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15031       gtk_widget_hide (search_dialog);
15032       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15033       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15034     }
15035 }
15036
15037 static void
15038 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15039                                     GtkWidget   *search_dialog,
15040                                     gpointer     user_data)
15041 {
15042   gint x, y;
15043   gint tree_x, tree_y;
15044   gint tree_width, tree_height;
15045   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15046   GdkScreen *screen = gdk_window_get_screen (tree_window);
15047   GtkRequisition requisition;
15048   gint monitor_num;
15049   GdkRectangle monitor;
15050
15051   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15052   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
15053
15054   gtk_widget_realize (search_dialog);
15055
15056   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15057   tree_width = gdk_window_get_width (tree_window);
15058   tree_height = gdk_window_get_height (tree_window);
15059   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15060
15061   if (tree_x + tree_width > gdk_screen_get_width (screen))
15062     x = gdk_screen_get_width (screen) - requisition.width;
15063   else if (tree_x + tree_width - requisition.width < 0)
15064     x = 0;
15065   else
15066     x = tree_x + tree_width - requisition.width;
15067
15068   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15069     y = gdk_screen_get_height (screen) - requisition.height;
15070   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15071     y = 0;
15072   else
15073     y = tree_y + tree_height;
15074
15075   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15076 }
15077
15078 static void
15079 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15080                                       GtkMenu  *menu,
15081                                       gpointer  data)
15082 {
15083   GtkTreeView *tree_view = (GtkTreeView *)data;
15084
15085   tree_view->priv->disable_popdown = 1;
15086   g_signal_connect (menu, "hide",
15087                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15088 }
15089
15090 /* Because we're visible but offscreen, we just set a flag in the preedit
15091  * callback.
15092  */
15093 static void
15094 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15095                                       GtkTreeView  *tree_view)
15096 {
15097   tree_view->priv->imcontext_changed = 1;
15098   if (tree_view->priv->typeselect_flush_timeout)
15099     {
15100       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15101       tree_view->priv->typeselect_flush_timeout =
15102         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15103                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15104                        tree_view);
15105     }
15106
15107 }
15108
15109 static void
15110 gtk_tree_view_search_activate (GtkEntry    *entry,
15111                                GtkTreeView *tree_view)
15112 {
15113   GtkTreePath *path;
15114
15115   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15116                                     tree_view,
15117                                     gtk_get_current_event_device ());
15118
15119   /* If we have a row selected and it's the cursor row, we activate
15120    * the row XXX */
15121   if (tree_view->priv->cursor_node &&
15122       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15123     {
15124       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15125                                              tree_view->priv->cursor_node);
15126
15127       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15128
15129       gtk_tree_path_free (path);
15130     }
15131 }
15132
15133 static gboolean
15134 gtk_tree_view_real_search_enable_popdown (gpointer data)
15135 {
15136   GtkTreeView *tree_view = (GtkTreeView *)data;
15137
15138   tree_view->priv->disable_popdown = 0;
15139
15140   return FALSE;
15141 }
15142
15143 static void
15144 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15145                                      gpointer   data)
15146 {
15147   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15148 }
15149
15150 static gboolean
15151 gtk_tree_view_search_delete_event (GtkWidget *widget,
15152                                    GdkEventAny *event,
15153                                    GtkTreeView *tree_view)
15154 {
15155   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15156
15157   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15158
15159   return TRUE;
15160 }
15161
15162 static gboolean
15163 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15164                                          GdkEventButton *event,
15165                                          GtkTreeView *tree_view)
15166 {
15167   GdkDevice *keyb_device;
15168
15169   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15170
15171   keyb_device = gdk_device_get_associated_device (event->device);
15172   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15173
15174   if (event->window == tree_view->priv->bin_window)
15175     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15176
15177   return TRUE;
15178 }
15179
15180 static gboolean
15181 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15182                                    GdkEventScroll *event,
15183                                    GtkTreeView *tree_view)
15184 {
15185   gboolean retval = FALSE;
15186
15187   if (event->direction == GDK_SCROLL_UP)
15188     {
15189       gtk_tree_view_search_move (widget, tree_view, TRUE);
15190       retval = TRUE;
15191     }
15192   else if (event->direction == GDK_SCROLL_DOWN)
15193     {
15194       gtk_tree_view_search_move (widget, tree_view, FALSE);
15195       retval = TRUE;
15196     }
15197
15198   /* renew the flush timeout */
15199   if (retval && tree_view->priv->typeselect_flush_timeout
15200       && !tree_view->priv->search_custom_entry_set)
15201     {
15202       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15203       tree_view->priv->typeselect_flush_timeout =
15204         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15205                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15206                        tree_view);
15207     }
15208
15209   return retval;
15210 }
15211
15212 static gboolean
15213 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15214                                       GdkEventKey *event,
15215                                       GtkTreeView *tree_view)
15216 {
15217   GdkModifierType default_accel;
15218   gboolean        retval = FALSE;
15219
15220   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15221   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15222
15223   /* close window and cancel the search */
15224   if (!tree_view->priv->search_custom_entry_set
15225       && (event->keyval == GDK_KEY_Escape ||
15226           event->keyval == GDK_KEY_Tab ||
15227             event->keyval == GDK_KEY_KP_Tab ||
15228             event->keyval == GDK_KEY_ISO_Left_Tab))
15229     {
15230       gtk_tree_view_search_dialog_hide (widget, tree_view,
15231                                         gdk_event_get_device ((GdkEvent *) event));
15232       return TRUE;
15233     }
15234
15235   default_accel = gtk_widget_get_modifier_mask (widget,
15236                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15237
15238   /* select previous matching iter */
15239   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15240     {
15241       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15242         gtk_widget_error_bell (widget);
15243
15244       retval = TRUE;
15245     }
15246
15247   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15248       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15249     {
15250       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15251         gtk_widget_error_bell (widget);
15252
15253       retval = TRUE;
15254     }
15255
15256   /* select next matching iter */
15257   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15258     {
15259       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15260         gtk_widget_error_bell (widget);
15261
15262       retval = TRUE;
15263     }
15264
15265   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15266       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15267     {
15268       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15269         gtk_widget_error_bell (widget);
15270
15271       retval = TRUE;
15272     }
15273
15274   /* renew the flush timeout */
15275   if (retval && tree_view->priv->typeselect_flush_timeout
15276       && !tree_view->priv->search_custom_entry_set)
15277     {
15278       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15279       tree_view->priv->typeselect_flush_timeout =
15280         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15281                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15282                        tree_view);
15283     }
15284
15285   return retval;
15286 }
15287
15288 /*  this function returns FALSE if there is a search string but
15289  *  nothing was found, and TRUE otherwise.
15290  */
15291 static gboolean
15292 gtk_tree_view_search_move (GtkWidget   *window,
15293                            GtkTreeView *tree_view,
15294                            gboolean     up)
15295 {
15296   gboolean ret;
15297   gint len;
15298   gint count = 0;
15299   const gchar *text;
15300   GtkTreeIter iter;
15301   GtkTreeModel *model;
15302   GtkTreeSelection *selection;
15303
15304   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15305
15306   g_return_val_if_fail (text != NULL, FALSE);
15307
15308   len = strlen (text);
15309
15310   if (up && tree_view->priv->selected_iter == 1)
15311     return strlen (text) < 1;
15312
15313   len = strlen (text);
15314
15315   if (len < 1)
15316     return TRUE;
15317
15318   model = gtk_tree_view_get_model (tree_view);
15319   selection = gtk_tree_view_get_selection (tree_view);
15320
15321   /* search */
15322   gtk_tree_selection_unselect_all (selection);
15323   if (!gtk_tree_model_get_iter_first (model, &iter))
15324     return TRUE;
15325
15326   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15327                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15328
15329   if (ret)
15330     {
15331       /* found */
15332       tree_view->priv->selected_iter += up?(-1):(1);
15333       return TRUE;
15334     }
15335   else
15336     {
15337       /* return to old iter */
15338       count = 0;
15339       gtk_tree_model_get_iter_first (model, &iter);
15340       gtk_tree_view_search_iter (model, selection,
15341                                  &iter, text,
15342                                  &count, tree_view->priv->selected_iter);
15343       return FALSE;
15344     }
15345 }
15346
15347 static gboolean
15348 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15349                                  gint          column,
15350                                  const gchar  *key,
15351                                  GtkTreeIter  *iter,
15352                                  gpointer      search_data)
15353 {
15354   gboolean retval = TRUE;
15355   const gchar *str;
15356   gchar *normalized_string;
15357   gchar *normalized_key;
15358   gchar *case_normalized_string = NULL;
15359   gchar *case_normalized_key = NULL;
15360   GValue value = G_VALUE_INIT;
15361   GValue transformed = G_VALUE_INIT;
15362
15363   gtk_tree_model_get_value (model, iter, column, &value);
15364
15365   g_value_init (&transformed, G_TYPE_STRING);
15366
15367   if (!g_value_transform (&value, &transformed))
15368     {
15369       g_value_unset (&value);
15370       return TRUE;
15371     }
15372
15373   g_value_unset (&value);
15374
15375   str = g_value_get_string (&transformed);
15376   if (!str)
15377     {
15378       g_value_unset (&transformed);
15379       return TRUE;
15380     }
15381
15382   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15383   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15384
15385   if (normalized_string && normalized_key)
15386     {
15387       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15388       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15389
15390       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15391         retval = FALSE;
15392     }
15393
15394   g_value_unset (&transformed);
15395   g_free (normalized_key);
15396   g_free (normalized_string);
15397   g_free (case_normalized_key);
15398   g_free (case_normalized_string);
15399
15400   return retval;
15401 }
15402
15403 static gboolean
15404 gtk_tree_view_search_iter (GtkTreeModel     *model,
15405                            GtkTreeSelection *selection,
15406                            GtkTreeIter      *iter,
15407                            const gchar      *text,
15408                            gint             *count,
15409                            gint              n)
15410 {
15411   GtkRBTree *tree = NULL;
15412   GtkRBNode *node = NULL;
15413   GtkTreePath *path;
15414
15415   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15416
15417   path = gtk_tree_model_get_path (model, iter);
15418   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15419
15420   do
15421     {
15422       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15423         {
15424           (*count)++;
15425           if (*count == n)
15426             {
15427               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15428                                             TRUE, 0.5, 0.0);
15429               gtk_tree_selection_select_iter (selection, iter);
15430               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15431
15432               if (path)
15433                 gtk_tree_path_free (path);
15434
15435               return TRUE;
15436             }
15437         }
15438
15439       if (node->children)
15440         {
15441           gboolean has_child;
15442           GtkTreeIter tmp;
15443
15444           tree = node->children;
15445           node = _gtk_rbtree_first (tree);
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, CLAMP_NODE);
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 }