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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmainprivate.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkbuildable.h"
  34 #include "gtkbutton.h"
  35 #include "gtklabel.h"
  36 #include "gtkhbox.h"
  37 #include "gtkvbox.h"
  38 #include "gtkarrow.h"
  39 #include "gtkintl.h"
  40 #include "gtkbindings.h"
  41 #include "gtkcontainer.h"
  42 #include "gtkentry.h"
  43 #include "gtkframe.h"
  44 #include "gtktreemodelsort.h"
  45 #include "gtktooltip.h"
  46 #include "gtkscrollable.h"
  47 #include "gtkcelllayout.h"
  48 #include "gtkprivate.h"
  49 #include "gtkwidgetprivate.h"
  50 #include "gtkentryprivate.h"
  51 #include "gtkstylecontextprivate.h"
  52 #include "gtktypebuiltins.h"
  53 #include "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155  /* This lovely little value is used to determine how far away from the title bar
 156   * you can move the mouse and still have a column drag work.
 157   */
 158 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 159
 160 #ifdef __GNUC__
 161
 162 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 163      if (!(expr))                                                       \
 164        {                                                                \
 165          g_log (G_LOG_DOMAIN,                                           \
 166                 G_LOG_LEVEL_CRITICAL,                                   \
 167                 "%s (%s): assertion `%s' failed.\n"                     \
 168                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 169                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 170                 "without letting the view know.  Any display from now on is likely to\n"  \
 171                 "be incorrect.\n",                                                        \
 172                 G_STRLOC,                                               \
 173                 G_STRFUNC,                                              \
 174                 #expr);                                                 \
 175          return ret;                                                    \
 176        };                               }G_STMT_END
 177
 178 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 179      if (!(expr))                                                       \
 180        {                                                                \
 181          g_log (G_LOG_DOMAIN,                                           \
 182                 G_LOG_LEVEL_CRITICAL,                                   \
 183                 "%s (%s): assertion `%s' failed.\n"                     \
 184                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 185                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 186                 "without letting the view know.  Any display from now on is likely to\n"  \
 187                 "be incorrect.\n",                                                        \
 188                 G_STRLOC,                                               \
 189                 G_STRFUNC,                                              \
 190                 #expr);                                                 \
 191          return;                                                        \
 192        };                               }G_STMT_END
 193
 194 #else
 195
 196 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 197      if (!(expr))                                                       \
 198        {                                                                \
 199          g_log (G_LOG_DOMAIN,                                           \
 200                 G_LOG_LEVEL_CRITICAL,                                   \
 201                 "file %s: line %d: assertion `%s' failed.\n"       \
 202                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 203                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 204                 "without letting the view know.  Any display from now on is likely to\n"  \
 205                 "be incorrect.\n",                                                        \
 206                 __FILE__,                                               \
 207                 __LINE__,                                               \
 208                 #expr);                                                 \
 209          return ret;                                                    \
 210        };                               }G_STMT_END
 211
 212 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 213      if (!(expr))                                                       \
 214        {                                                                \
 215          g_log (G_LOG_DOMAIN,                                           \
 216                 G_LOG_LEVEL_CRITICAL,                                   \
 217                 "file %s: line %d: assertion '%s' failed.\n"            \
 218                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 219                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 220                 "without letting the view know.  Any display from now on is likely to\n"  \
 221                 "be incorrect.\n",                                                        \
 222                 __FILE__,                                               \
 223                 __LINE__,                                               \
 224                 #expr);                                                 \
 225          return;                                                        \
 226        };                               }G_STMT_END
 227 #endif
 228
 229 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 230 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 231 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 232 #define SCROLL_EDGE_SIZE 15
 233 #define EXPANDER_EXTRA_PADDING 4
 234 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 235 #define AUTO_EXPAND_TIMEOUT 500
 236
 237 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 238  * vice versa.
 239  */
 240 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 241 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 242
 243 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 244 struct _GtkTreeViewColumnReorder
 245 {
 246   gint left_align;
 247   gint right_align;
 248   GtkTreeViewColumn *left_column;
 249   GtkTreeViewColumn *right_column;
 250 };
 251
 252 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 253 struct _GtkTreeViewChild
 254 {
 255   GtkWidget *widget;
 256   gint x;
 257   gint y;
 258   gint width;
 259   gint height;
 260 };
 261
 262
 263 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 264 struct _TreeViewDragInfo
 265 {
 266   GdkModifierType start_button_mask;
 267   GtkTargetList *_unused_source_target_list;
 268   GdkDragAction source_actions;
 269
 270   GtkTargetList *_unused_dest_target_list;
 271
 272   guint source_set : 1;
 273   guint dest_set : 1;
 274 };
 275
 276
 277 struct _GtkTreeViewPrivate
 278 {
 279   GtkTreeModel *model;
 280
 281   /* tree information */
 282   GtkRBTree *tree;
 283
 284   /* Container info */
 285   GList *children;
 286   gint width;
 287   gint height;
 288
 289   /* Adjustments */
 290   GtkAdjustment *hadjustment;
 291   GtkAdjustment *vadjustment;
 292   gint           min_display_width;
 293   gint           min_display_height;
 294
 295   /* Sub windows */
 296   GdkWindow *bin_window;
 297   GdkWindow *header_window;
 298
 299   /* Scroll position state keeping */
 300   GtkTreeRowReference *top_row;
 301   gint top_row_dy;
 302   /* dy == y pos of top_row + top_row_dy */
 303   /* we cache it for simplicity of the code */
 304   gint dy;
 305
 306   guint presize_handler_timer;
 307   guint validate_rows_timer;
 308   guint scroll_sync_timer;
 309
 310   /* Indentation and expander layout */
 311   gint expander_size;
 312   GtkTreeViewColumn *expander_column;
 313
 314   gint level_indentation;
 315
 316   /* Key navigation (focus), selection */
 317   gint cursor_offset;
 318
 319   GtkTreeRowReference *anchor;
 320   GtkTreeRowReference *cursor;
 321
 322   GtkTreeViewColumn *focus_column;
 323
 324   /* Current pressed node, previously pressed, prelight */
 325   GtkRBNode *button_pressed_node;
 326   GtkRBTree *button_pressed_tree;
 327
 328   gint pressed_button;
 329   gint press_start_x;
 330   gint press_start_y;
 331
 332   gint event_last_x;
 333   gint event_last_y;
 334
 335   guint last_button_time;
 336   gint last_button_x;
 337   gint last_button_y;
 338
 339   GtkRBNode *prelight_node;
 340   GtkRBTree *prelight_tree;
 341
 342   /* Cell Editing */
 343   GtkTreeViewColumn *edited_column;
 344
 345   /* The node that's currently being collapsed or expanded */
 346   GtkRBNode *expanded_collapsed_node;
 347   GtkRBTree *expanded_collapsed_tree;
 348   guint expand_collapse_timeout;
 349
 350   /* Auto expand/collapse timeout in hover mode */
 351   guint auto_expand_timeout;
 352
 353   /* Selection information */
 354   GtkTreeSelection *selection;
 355
 356   /* Header information */
 357   gint n_columns;
 358   GList *columns;
 359   gint header_height;
 360
 361   GtkTreeViewColumnDropFunc column_drop_func;
 362   gpointer column_drop_func_data;
 363   GDestroyNotify column_drop_func_data_destroy;
 364   GList *column_drag_info;
 365   GtkTreeViewColumnReorder *cur_reorder;
 366
 367   gint prev_width_before_expander;
 368
 369   /* Interactive Header reordering */
 370   GdkWindow *drag_window;
 371   GdkWindow *drag_highlight_window;
 372   GtkTreeViewColumn *drag_column;
 373   gint drag_column_x;
 374
 375   /* Interactive Header Resizing */
 376   gint drag_pos;
 377   gint x_drag;
 378
 379   /* Non-interactive Header Resizing, expand flag support */
 380   gint prev_width;
 381
 382   gint last_extra_space;
 383   gint last_extra_space_per_column;
 384   gint last_number_of_expand_columns;
 385
 386   /* ATK Hack */
 387   GtkTreeDestroyCountFunc destroy_count_func;
 388   gpointer destroy_count_data;
 389   GDestroyNotify destroy_count_destroy;
 390
 391   /* Scroll timeout (e.g. during dnd, rubber banding) */
 392   guint scroll_timeout;
 393
 394   /* Row drag-and-drop */
 395   GtkTreeRowReference *drag_dest_row;
 396   GtkTreeViewDropPosition drag_dest_pos;
 397   guint open_dest_timeout;
 398
 399   /* Rubber banding */
 400   gint rubber_band_status;
 401   gint rubber_band_x;
 402   gint rubber_band_y;
 403   gint rubber_band_shift;
 404   gint rubber_band_ctrl;
 405
 406   GtkRBNode *rubber_band_start_node;
 407   GtkRBTree *rubber_band_start_tree;
 408
 409   GtkRBNode *rubber_band_end_node;
 410   GtkRBTree *rubber_band_end_tree;
 411
 412   /* fixed height */
 413   gint fixed_height;
 414
 415   /* Scroll-to functionality when unrealized */
 416   GtkTreeRowReference *scroll_to_path;
 417   GtkTreeViewColumn *scroll_to_column;
 418   gfloat scroll_to_row_align;
 419   gfloat scroll_to_col_align;
 420
 421   /* Interactive search */
 422   gint selected_iter;
 423   gint search_column;
 424   GtkTreeViewSearchPositionFunc search_position_func;
 425   GtkTreeViewSearchEqualFunc search_equal_func;
 426   gpointer search_user_data;
 427   GDestroyNotify search_destroy;
 428   gpointer search_position_user_data;
 429   GDestroyNotify search_position_destroy;
 430   GtkWidget *search_window;
 431   GtkWidget *search_entry;
 432   gulong search_entry_changed_id;
 433   guint typeselect_flush_timeout;
 434
 435   /* Grid and tree lines */
 436   GtkTreeViewGridLines grid_lines;
 437   double grid_line_dashes[2];
 438   int grid_line_width;
 439
 440   gboolean tree_lines_enabled;
 441   double tree_line_dashes[2];
 442   int tree_line_width;
 443
 444   /* Row separators */
 445   GtkTreeViewRowSeparatorFunc row_separator_func;
 446   gpointer row_separator_data;
 447   GDestroyNotify row_separator_destroy;
 448
 449   /* Tooltip support */
 450   gint tooltip_column;
 451
 452   /* Here comes the bitfield */
 453   guint scroll_to_use_align : 1;
 454
 455   guint fixed_height_mode : 1;
 456   guint fixed_height_check : 1;
 457
 458   guint reorderable : 1;
 459   guint header_has_focus : 1;
 460   guint drag_column_window_state : 3;
 461   /* hint to display rows in alternating colors */
 462   guint has_rules : 1;
 463   guint mark_rows_col_dirty : 1;
 464
 465   /* for DnD */
 466   guint empty_view_drop : 1;
 467
 468   guint ctrl_pressed : 1;
 469   guint shift_pressed : 1;
 470
 471   guint init_hadjust_value : 1;
 472
 473   guint in_top_row_to_dy : 1;
 474
 475   /* interactive search */
 476   guint enable_search : 1;
 477   guint disable_popdown : 1;
 478   guint search_custom_entry_set : 1;
 479
 480   guint hover_selection : 1;
 481   guint hover_expand : 1;
 482   guint imcontext_changed : 1;
 483
 484   guint rubber_banding_enable : 1;
 485
 486   guint in_grab : 1;
 487
 488   guint post_validation_flag : 1;
 489
 490   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 491   guint search_entry_avoid_unhandled_binding : 1;
 492
 493   /* GtkScrollablePolicy needs to be checked when
 494    * driving the scrollable adjustment values */
 495   guint hscroll_policy : 1;
 496   guint vscroll_policy : 1;
 497
 498   /* GtkTreeView flags */
 499   guint is_list : 1;
 500   guint show_expanders : 1;
 501   guint in_column_resize : 1;
 502   guint arrow_prelit : 1;
 503   guint headers_visible : 1;
 504   guint draw_keyfocus : 1;
 505   guint model_setup : 1;
 506   guint in_column_drag : 1;
 507 };
 508
 509
 510 /* Signals */
 511 enum
 512 {
 513   ROW_ACTIVATED,
 514   TEST_EXPAND_ROW,
 515   TEST_COLLAPSE_ROW,
 516   ROW_EXPANDED,
 517   ROW_COLLAPSED,
 518   COLUMNS_CHANGED,
 519   CURSOR_CHANGED,
 520   MOVE_CURSOR,
 521   SELECT_ALL,
 522   UNSELECT_ALL,
 523   SELECT_CURSOR_ROW,
 524   TOGGLE_CURSOR_ROW,
 525   EXPAND_COLLAPSE_CURSOR_ROW,
 526   SELECT_CURSOR_PARENT,
 527   START_INTERACTIVE_SEARCH,
 528   LAST_SIGNAL
 529 };
 530
 531 /* Properties */
 532 enum {
 533   PROP_0,
 534   PROP_MODEL,
 535   PROP_HADJUSTMENT,
 536   PROP_VADJUSTMENT,
 537   PROP_HSCROLL_POLICY,
 538   PROP_VSCROLL_POLICY,
 539   PROP_HEADERS_VISIBLE,
 540   PROP_HEADERS_CLICKABLE,
 541   PROP_EXPANDER_COLUMN,
 542   PROP_REORDERABLE,
 543   PROP_RULES_HINT,
 544   PROP_ENABLE_SEARCH,
 545   PROP_SEARCH_COLUMN,
 546   PROP_FIXED_HEIGHT_MODE,
 547   PROP_HOVER_SELECTION,
 548   PROP_HOVER_EXPAND,
 549   PROP_SHOW_EXPANDERS,
 550   PROP_LEVEL_INDENTATION,
 551   PROP_RUBBER_BANDING,
 552   PROP_ENABLE_GRID_LINES,
 553   PROP_ENABLE_TREE_LINES,
 554   PROP_TOOLTIP_COLUMN
 555 };
 556
 557 /* object signals */
 558 static void     gtk_tree_view_finalize             (GObject          *object);
 559 static void     gtk_tree_view_set_property         (GObject         *object,
 560                                                     guint            prop_id,
 561                                                     const GValue    *value,
 562                                                     GParamSpec      *pspec);
 563 static void     gtk_tree_view_get_property         (GObject         *object,
 564                                                     guint            prop_id,
 565                                                     GValue          *value,
 566                                                     GParamSpec      *pspec);
 567
 568 /* gtkwidget signals */
 569 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 570 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 571 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 572 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 573 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 574                                                     gint             *minimum,
 575                                                     gint             *natural);
 576 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 577                                                     gint             *minimum,
 578                                                     gint             *natural);
 579 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 580                                                     GtkRequisition   *requisition,
 581                                                     gboolean          may_validate);
 582 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 583                                                     GtkAllocation    *allocation);
 584 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 585                                                     cairo_t          *cr);
 586 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 587                                                     GdkEventKey      *event);
 588 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 589                                                     GdkEventKey      *event);
 590 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 591                                                     GdkEventMotion   *event);
 592 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 593                                                     GdkEventCrossing *event);
 594 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 595                                                     GdkEventCrossing *event);
 596 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 597                                                     GdkEventButton   *event);
 598 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 599                                                     GdkEventButton   *event);
 600 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 601                                                     GdkEventGrabBroken *event);
 602 #if 0
 603 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 604                                                     GdkEventConfigure *event);
 605 #endif
 606
 607 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 608                                                          GtkWidget    *child);
 609
 610 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 611                                                     GtkWidget        *child);
 612 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 613                                                     GdkEventFocus    *event);
 614 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 615                                                     GtkDirectionType  direction);
 616 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 617 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 618 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 619                                                     gboolean          was_grabbed);
 620 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 621                                                     GtkStateFlags     previous_state);
 622
 623 /* container signals */
 624 static void     gtk_tree_view_remove               (GtkContainer     *container,
 625                                                     GtkWidget        *widget);
 626 static void     gtk_tree_view_forall               (GtkContainer     *container,
 627                                                     gboolean          include_internals,
 628                                                     GtkCallback       callback,
 629                                                     gpointer          callback_data);
 630
 631 /* Source side drag signals */
 632 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 633                                             GdkDragContext   *context);
 634 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 635                                             GdkDragContext   *context);
 636 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 637                                             GdkDragContext   *context,
 638                                             GtkSelectionData *selection_data,
 639                                             guint             info,
 640                                             guint             time);
 641 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643
 644 /* Target side drag signals */
 645 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 646                                                   GdkDragContext   *context,
 647                                                   guint             time);
 648 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 649                                                   GdkDragContext   *context,
 650                                                   gint              x,
 651                                                   gint              y,
 652                                                   guint             time);
 653 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 654                                                   GdkDragContext   *context,
 655                                                   gint              x,
 656                                                   gint              y,
 657                                                   guint             time);
 658 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 659                                                   GdkDragContext   *context,
 660                                                   gint              x,
 661                                                   gint              y,
 662                                                   GtkSelectionData *selection_data,
 663                                                   guint             info,
 664                                                   guint             time);
 665
 666 /* tree_model signals */
 667 static void     gtk_tree_view_set_hadjustment             (GtkTreeView     *tree_view,
 668                                                            GtkAdjustment   *adjustment);
 669 static void     gtk_tree_view_set_vadjustment             (GtkTreeView     *tree_view,
 670                                                            GtkAdjustment   *adjustment);
 671 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 672                                                            GtkMovementStep  step,
 673                                                            gint             count);
 674 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 675 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 676 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 677                                                            gboolean         start_editing);
 678 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 680                                                                gboolean         logical,
 681                                                                gboolean         expand,
 682                                                                gboolean         open_all);
 683 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 684 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 685                                                            GtkTreePath     *path,
 686                                                            GtkTreeIter     *iter,
 687                                                            gpointer         data);
 688 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 689                                                            GtkTreePath     *path,
 690                                                            GtkTreeIter     *iter,
 691                                                            gpointer         data);
 692 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 693                                                            GtkTreePath     *path,
 694                                                            GtkTreeIter     *iter,
 695                                                            gpointer         data);
 696 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 697                                                            GtkTreePath     *path,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 700                                                            GtkTreePath     *parent,
 701                                                            GtkTreeIter     *iter,
 702                                                            gint            *new_order,
 703                                                            gpointer         data);
 704
 705 /* Incremental reflow */
 706 static gboolean validate_row             (GtkTreeView *tree_view,
 707                                           GtkRBTree   *tree,
 708                                           GtkRBNode   *node,
 709                                           GtkTreeIter *iter,
 710                                           GtkTreePath *path);
 711 static void     validate_visible_area    (GtkTreeView *tree_view);
 712 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 713 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 714                                           gboolean     size_request);
 715 static gboolean validate_rows            (GtkTreeView *tree_view);
 716 static gboolean presize_handler_callback (gpointer     data);
 717 static void     install_presize_handler  (GtkTreeView *tree_view);
 718 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 719 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 720                                              GtkTreePath *path,
 721                                              gint         offset);
 722 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 723 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 724 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 725
 726 /* Internal functions */
 727 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 728                                                               GtkTreeViewColumn  *column);
 729 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 730 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 731                                                               guint               keyval,
 732                                                               guint               modmask,
 733                                                               gboolean            add_shifted_binding,
 734                                                               GtkMovementStep     step,
 735                                                               gint                count);
 736 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 737                                                               GtkRBTree          *tree);
 738 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 739                                                               GtkTreePath        *path,
 740                                                               const GdkRectangle *clip_rect);
 741 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 742                                                               GtkRBTree          *tree,
 743                                                               GtkRBNode          *node);
 744 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 745                                                               cairo_t            *cr,
 746                                                               GtkRBTree          *tree,
 747                                                               GtkRBNode          *node,
 748                                                               gint                x,
 749                                                               gint                y);
 750 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 751                                                               GtkRBTree          *tree,
 752                                                               gint               *x1,
 753                                                               gint               *x2);
 754 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 755                                                               gint                i,
 756                                                               gint               *x);
 757 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 758                                                               GtkTreeView        *tree_view);
 759 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 760                                                               GtkRBTree          *tree,
 761                                                               GtkTreeIter        *iter,
 762                                                               gint                depth,
 763                                                               gboolean            recurse);
 764 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 765                                                               GtkRBTree          *tree,
 766                                                               GtkRBNode          *node);
 767 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 768                                                               GtkTreeViewColumn  *column,
 769                                                               gboolean            focus_to_cell);
 770 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 771                                                               GdkEventMotion     *event);
 772 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 773 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 774                                                               gint                count);
 775 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 776                                                               gint                count);
 777 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 778                                                               gint                count);
 779 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 780                                                               gint                count);
 781 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 782                                                               GtkTreePath        *path,
 783                                                               GtkRBTree          *tree,
 784                                                               GtkRBNode          *node,
 785                                                               gboolean            animate);
 786 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 787                                                               GtkTreePath        *path,
 788                                                               GtkRBTree          *tree,
 789                                                               GtkRBNode          *node,
 790                                                               gboolean            open_all,
 791                                                               gboolean            animate);
 792 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 793                                                               GtkTreePath        *path,
 794                                                               gboolean            clear_and_select,
 795                                                               gboolean            clamp_node);
 796 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 797 static void     column_sizing_notify                         (GObject            *object,
 798                                                               GParamSpec         *pspec,
 799                                                               gpointer            data);
 800 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 801 static void     update_prelight                              (GtkTreeView        *tree_view,
 802                                                               int                 x,
 803                                                               int                 y);
 804
 805 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 806
 807 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 808                                                               GtkRBTree   *tree,
 809                                                               GtkRBNode   *node,
 810                                                               gint         vertical_separator);
 811 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 812                                                               GtkRBNode   *node,
 813                                                               gint         vertical_separator);
 814
 815 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 816                                                               GtkRBTree   *tree,
 817                                                               GtkRBNode   *node);
 818 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 819                                                               GtkRBNode   *node);
 820
 821 /* interactive search */
 822 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 823 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 824                                                          GtkTreeView      *tree_view,
 825                                                          GdkDevice        *device);
 826 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 827                                                          GtkWidget        *search_dialog,
 828                                                          gpointer          user_data);
 829 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 830                                                          GtkMenu          *menu,
 831                                                          gpointer          data);
 832 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 833                                                          GtkTreeView      *tree_view);
 834 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 837 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 838                                                          gpointer          data);
 839 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 840                                                          GdkEventAny      *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 843                                                          GdkEventButton   *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 846                                                          GdkEventScroll   *event,
 847                                                          GtkTreeView      *tree_view);
 848 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 849                                                          GdkEventKey      *event,
 850                                                          GtkTreeView      *tree_view);
 851 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 852                                                          GtkTreeView      *tree_view,
 853                                                          gboolean          up);
 854 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 855                                                          gint              column,
 856                                                          const gchar      *key,
 857                                                          GtkTreeIter      *iter,
 858                                                          gpointer          search_data);
 859 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 860                                                          GtkTreeSelection *selection,
 861                                                          GtkTreeIter      *iter,
 862                                                          const gchar      *text,
 863                                                          gint             *count,
 864                                                          gint              n);
 865 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 866                                                          GtkTreeView      *tree_view);
 867 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 868                                                          GtkWidget        *child_widget,
 869                                                          gint              x,
 870                                                          gint              y,
 871                                                          gint              width,
 872                                                          gint              height);
 873 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 874                                                          GtkTreePath      *cursor_path,
 875                                                          gboolean          edit_only);
 876 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 877                                                          gboolean     cancel_editing);
 878 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 879                                                              GdkDevice   *device,
 880                                                              gboolean     keybinding);
 881 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 882 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 883                                                          GtkTreeViewColumn *column,
 884                                                          gint               drop_position);
 885
 886 /* GtkBuildable */
 887 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 888                                                             GtkBuilder        *builder,
 889                                                             GObject           *child,
 890                                                             const gchar       *type);
 891 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 892                                                             GtkBuilder        *builder,
 893                                                             const gchar       *childname);
 894 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 895
 896
 897 static gboolean scroll_row_timeout                   (gpointer     data);
 898 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 899 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 900
 901 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 902
 903 \f
 904
 905 /* GType Methods
 906  */
 907
 908 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 909                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 910                                                 gtk_tree_view_buildable_init)
 911                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 912
 913 static void
 914 gtk_tree_view_class_init (GtkTreeViewClass *class)
 915 {
 916   GObjectClass *o_class;
 917   GtkWidgetClass *widget_class;
 918   GtkContainerClass *container_class;
 919   GtkBindingSet *binding_set;
 920
 921   binding_set = gtk_binding_set_by_class (class);
 922
 923   o_class = (GObjectClass *) class;
 924   widget_class = (GtkWidgetClass *) class;
 925   container_class = (GtkContainerClass *) class;
 926
 927   /* GObject signals */
 928   o_class->set_property = gtk_tree_view_set_property;
 929   o_class->get_property = gtk_tree_view_get_property;
 930   o_class->finalize = gtk_tree_view_finalize;
 931
 932   /* GtkWidget signals */
 933   widget_class->destroy = gtk_tree_view_destroy;
 934   widget_class->map = gtk_tree_view_map;
 935   widget_class->realize = gtk_tree_view_realize;
 936   widget_class->unrealize = gtk_tree_view_unrealize;
 937   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 938   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 939   widget_class->size_allocate = gtk_tree_view_size_allocate;
 940   widget_class->button_press_event = gtk_tree_view_button_press;
 941   widget_class->button_release_event = gtk_tree_view_button_release;
 942   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 943   /*widget_class->configure_event = gtk_tree_view_configure;*/
 944   widget_class->motion_notify_event = gtk_tree_view_motion;
 945   widget_class->draw = gtk_tree_view_draw;
 946   widget_class->key_press_event = gtk_tree_view_key_press;
 947   widget_class->key_release_event = gtk_tree_view_key_release;
 948   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 949   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 950   widget_class->focus_out_event = gtk_tree_view_focus_out;
 951   widget_class->drag_begin = gtk_tree_view_drag_begin;
 952   widget_class->drag_end = gtk_tree_view_drag_end;
 953   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 954   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 955   widget_class->drag_leave = gtk_tree_view_drag_leave;
 956   widget_class->drag_motion = gtk_tree_view_drag_motion;
 957   widget_class->drag_drop = gtk_tree_view_drag_drop;
 958   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 959   widget_class->focus = gtk_tree_view_focus;
 960   widget_class->grab_focus = gtk_tree_view_grab_focus;
 961   widget_class->style_updated = gtk_tree_view_style_updated;
 962   widget_class->grab_notify = gtk_tree_view_grab_notify;
 963   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 964
 965   /* GtkContainer signals */
 966   container_class->remove = gtk_tree_view_remove;
 967   container_class->forall = gtk_tree_view_forall;
 968   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 969   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 970
 971   class->move_cursor = gtk_tree_view_real_move_cursor;
 972   class->select_all = gtk_tree_view_real_select_all;
 973   class->unselect_all = gtk_tree_view_real_unselect_all;
 974   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 975   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 976   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 977   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 978   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 979
 980   /* Properties */
 981
 982   g_object_class_install_property (o_class,
 983                                    PROP_MODEL,
 984                                    g_param_spec_object ("model",
 985                                                         P_("TreeView Model"),
 986                                                         P_("The model for the tree view"),
 987                                                         GTK_TYPE_TREE_MODEL,
 988                                                         GTK_PARAM_READWRITE));
 989
 990   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 991   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 992   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 993   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
 994
 995   g_object_class_install_property (o_class,
 996                                    PROP_HEADERS_VISIBLE,
 997                                    g_param_spec_boolean ("headers-visible",
 998                                                          P_("Headers Visible"),
 999                                                          P_("Show the column header buttons"),
1000                                                          TRUE,
1001                                                          GTK_PARAM_READWRITE));
1002
1003   g_object_class_install_property (o_class,
1004                                    PROP_HEADERS_CLICKABLE,
1005                                    g_param_spec_boolean ("headers-clickable",
1006                                                          P_("Headers Clickable"),
1007                                                          P_("Column headers respond to click events"),
1008                                                          TRUE,
1009                                                          GTK_PARAM_READWRITE));
1010
1011   g_object_class_install_property (o_class,
1012                                    PROP_EXPANDER_COLUMN,
1013                                    g_param_spec_object ("expander-column",
1014                                                         P_("Expander Column"),
1015                                                         P_("Set the column for the expander column"),
1016                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1017                                                         GTK_PARAM_READWRITE));
1018
1019   g_object_class_install_property (o_class,
1020                                    PROP_REORDERABLE,
1021                                    g_param_spec_boolean ("reorderable",
1022                                                          P_("Reorderable"),
1023                                                          P_("View is reorderable"),
1024                                                          FALSE,
1025                                                          GTK_PARAM_READWRITE));
1026
1027   g_object_class_install_property (o_class,
1028                                    PROP_RULES_HINT,
1029                                    g_param_spec_boolean ("rules-hint",
1030                                                          P_("Rules Hint"),
1031                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1032                                                          FALSE,
1033                                                          GTK_PARAM_READWRITE));
1034
1035     g_object_class_install_property (o_class,
1036                                      PROP_ENABLE_SEARCH,
1037                                      g_param_spec_boolean ("enable-search",
1038                                                            P_("Enable Search"),
1039                                                            P_("View allows user to search through columns interactively"),
1040                                                            TRUE,
1041                                                            GTK_PARAM_READWRITE));
1042
1043     g_object_class_install_property (o_class,
1044                                      PROP_SEARCH_COLUMN,
1045                                      g_param_spec_int ("search-column",
1046                                                        P_("Search Column"),
1047                                                        P_("Model column to search through during interactive search"),
1048                                                        -1,
1049                                                        G_MAXINT,
1050                                                        -1,
1051                                                        GTK_PARAM_READWRITE));
1052
1053     /**
1054      * GtkTreeView:fixed-height-mode:
1055      *
1056      * Setting the ::fixed-height-mode property to %TRUE speeds up
1057      * #GtkTreeView by assuming that all rows have the same height.
1058      * Only enable this option if all rows are the same height.
1059      * Please see gtk_tree_view_set_fixed_height_mode() for more
1060      * information on this option.
1061      *
1062      * Since: 2.4
1063      **/
1064     g_object_class_install_property (o_class,
1065                                      PROP_FIXED_HEIGHT_MODE,
1066                                      g_param_spec_boolean ("fixed-height-mode",
1067                                                            P_("Fixed Height Mode"),
1068                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1069                                                            FALSE,
1070                                                            GTK_PARAM_READWRITE));
1071
1072     /**
1073      * GtkTreeView:hover-selection:
1074      *
1075      * Enables or disables the hover selection mode of @tree_view.
1076      * Hover selection makes the selected row follow the pointer.
1077      * Currently, this works only for the selection modes
1078      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1079      *
1080      * This mode is primarily intended for treeviews in popups, e.g.
1081      * in #GtkComboBox or #GtkEntryCompletion.
1082      *
1083      * Since: 2.6
1084      */
1085     g_object_class_install_property (o_class,
1086                                      PROP_HOVER_SELECTION,
1087                                      g_param_spec_boolean ("hover-selection",
1088                                                            P_("Hover Selection"),
1089                                                            P_("Whether the selection should follow the pointer"),
1090                                                            FALSE,
1091                                                            GTK_PARAM_READWRITE));
1092
1093     /**
1094      * GtkTreeView:hover-expand:
1095      *
1096      * Enables or disables the hover expansion mode of @tree_view.
1097      * Hover expansion makes rows expand or collapse if the pointer moves
1098      * over them.
1099      *
1100      * This mode is primarily intended for treeviews in popups, e.g.
1101      * in #GtkComboBox or #GtkEntryCompletion.
1102      *
1103      * Since: 2.6
1104      */
1105     g_object_class_install_property (o_class,
1106                                      PROP_HOVER_EXPAND,
1107                                      g_param_spec_boolean ("hover-expand",
1108                                                            P_("Hover Expand"),
1109                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1110                                                            FALSE,
1111                                                            GTK_PARAM_READWRITE));
1112
1113     /**
1114      * GtkTreeView:show-expanders:
1115      *
1116      * %TRUE if the view has expanders.
1117      *
1118      * Since: 2.12
1119      */
1120     g_object_class_install_property (o_class,
1121                                      PROP_SHOW_EXPANDERS,
1122                                      g_param_spec_boolean ("show-expanders",
1123                                                            P_("Show Expanders"),
1124                                                            P_("View has expanders"),
1125                                                            TRUE,
1126                                                            GTK_PARAM_READWRITE));
1127
1128     /**
1129      * GtkTreeView:level-indentation:
1130      *
1131      * Extra indentation for each level.
1132      *
1133      * Since: 2.12
1134      */
1135     g_object_class_install_property (o_class,
1136                                      PROP_LEVEL_INDENTATION,
1137                                      g_param_spec_int ("level-indentation",
1138                                                        P_("Level Indentation"),
1139                                                        P_("Extra indentation for each level"),
1140                                                        0,
1141                                                        G_MAXINT,
1142                                                        0,
1143                                                        GTK_PARAM_READWRITE));
1144
1145     g_object_class_install_property (o_class,
1146                                      PROP_RUBBER_BANDING,
1147                                      g_param_spec_boolean ("rubber-banding",
1148                                                            P_("Rubber Banding"),
1149                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1150                                                            FALSE,
1151                                                            GTK_PARAM_READWRITE));
1152
1153     g_object_class_install_property (o_class,
1154                                      PROP_ENABLE_GRID_LINES,
1155                                      g_param_spec_enum ("enable-grid-lines",
1156                                                         P_("Enable Grid Lines"),
1157                                                         P_("Whether grid lines should be drawn in the tree view"),
1158                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1159                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1160                                                         GTK_PARAM_READWRITE));
1161
1162     g_object_class_install_property (o_class,
1163                                      PROP_ENABLE_TREE_LINES,
1164                                      g_param_spec_boolean ("enable-tree-lines",
1165                                                            P_("Enable Tree Lines"),
1166                                                            P_("Whether tree lines should be drawn in the tree view"),
1167                                                            FALSE,
1168                                                            GTK_PARAM_READWRITE));
1169
1170     g_object_class_install_property (o_class,
1171                                      PROP_TOOLTIP_COLUMN,
1172                                      g_param_spec_int ("tooltip-column",
1173                                                        P_("Tooltip Column"),
1174                                                        P_("The column in the model containing the tooltip texts for the rows"),
1175                                                        -1,
1176                                                        G_MAXINT,
1177                                                        -1,
1178                                                        GTK_PARAM_READWRITE));
1179
1180   /* Style properties */
1181 #define _TREE_VIEW_EXPANDER_SIZE 14
1182 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1183 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1184
1185   gtk_widget_class_install_style_property (widget_class,
1186                                            g_param_spec_int ("expander-size",
1187                                                              P_("Expander Size"),
1188                                                              P_("Size of the expander arrow"),
1189                                                              0,
1190                                                              G_MAXINT,
1191                                                              _TREE_VIEW_EXPANDER_SIZE,
1192                                                              GTK_PARAM_READABLE));
1193
1194   gtk_widget_class_install_style_property (widget_class,
1195                                            g_param_spec_int ("vertical-separator",
1196                                                              P_("Vertical Separator Width"),
1197                                                              P_("Vertical space between cells.  Must be an even number"),
1198                                                              0,
1199                                                              G_MAXINT,
1200                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1201                                                              GTK_PARAM_READABLE));
1202
1203   gtk_widget_class_install_style_property (widget_class,
1204                                            g_param_spec_int ("horizontal-separator",
1205                                                              P_("Horizontal Separator Width"),
1206                                                              P_("Horizontal space between cells.  Must be an even number"),
1207                                                              0,
1208                                                              G_MAXINT,
1209                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1210                                                              GTK_PARAM_READABLE));
1211
1212   gtk_widget_class_install_style_property (widget_class,
1213                                            g_param_spec_boolean ("allow-rules",
1214                                                                  P_("Allow Rules"),
1215                                                                  P_("Allow drawing of alternating color rows"),
1216                                                                  TRUE,
1217                                                                  GTK_PARAM_READABLE));
1218
1219   gtk_widget_class_install_style_property (widget_class,
1220                                            g_param_spec_boolean ("indent-expanders",
1221                                                                  P_("Indent Expanders"),
1222                                                                  P_("Make the expanders indented"),
1223                                                                  TRUE,
1224                                                                  GTK_PARAM_READABLE));
1225
1226   gtk_widget_class_install_style_property (widget_class,
1227                                            g_param_spec_boxed ("even-row-color",
1228                                                                P_("Even Row Color"),
1229                                                                P_("Color to use for even rows"),
1230                                                                GDK_TYPE_COLOR,
1231                                                                GTK_PARAM_READABLE));
1232
1233   gtk_widget_class_install_style_property (widget_class,
1234                                            g_param_spec_boxed ("odd-row-color",
1235                                                                P_("Odd Row Color"),
1236                                                                P_("Color to use for odd rows"),
1237                                                                GDK_TYPE_COLOR,
1238                                                                GTK_PARAM_READABLE));
1239
1240   gtk_widget_class_install_style_property (widget_class,
1241                                            g_param_spec_int ("grid-line-width",
1242                                                              P_("Grid line width"),
1243                                                              P_("Width, in pixels, of the tree view grid lines"),
1244                                                              0, G_MAXINT, 1,
1245                                                              GTK_PARAM_READABLE));
1246
1247   gtk_widget_class_install_style_property (widget_class,
1248                                            g_param_spec_int ("tree-line-width",
1249                                                              P_("Tree line width"),
1250                                                              P_("Width, in pixels, of the tree view lines"),
1251                                                              0, G_MAXINT, 1,
1252                                                              GTK_PARAM_READABLE));
1253
1254   gtk_widget_class_install_style_property (widget_class,
1255                                            g_param_spec_string ("grid-line-pattern",
1256                                                                 P_("Grid line pattern"),
1257                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1258                                                                 "\1\1",
1259                                                                 GTK_PARAM_READABLE));
1260
1261   gtk_widget_class_install_style_property (widget_class,
1262                                            g_param_spec_string ("tree-line-pattern",
1263                                                                 P_("Tree line pattern"),
1264                                                                 P_("Dash pattern used to draw the tree view lines"),
1265                                                                 "\1\1",
1266                                                                 GTK_PARAM_READABLE));
1267
1268   /* Signals */
1269   /**
1270    * GtkTreeView::row-activated:
1271    * @tree_view: the object on which the signal is emitted
1272    * @path: the #GtkTreePath for the activated row
1273    * @column: the #GtkTreeViewColumn in which the activation occurred
1274    *
1275    * The "row-activated" signal is emitted when the method
1276    * gtk_tree_view_row_activated() is called or the user double clicks
1277    * a treeview row. It is also emitted when a non-editable row is
1278    * selected and one of the keys: Space, Shift+Space, Return or
1279    * Enter is pressed.
1280    *
1281    * For selection handling refer to the <link linkend="TreeWidget">tree
1282    * widget conceptual overview</link> as well as #GtkTreeSelection.
1283    */
1284   tree_view_signals[ROW_ACTIVATED] =
1285     g_signal_new (I_("row-activated"),
1286                   G_TYPE_FROM_CLASS (o_class),
1287                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1288                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1289                   NULL, NULL,
1290                   _gtk_marshal_VOID__BOXED_OBJECT,
1291                   G_TYPE_NONE, 2,
1292                   GTK_TYPE_TREE_PATH,
1293                   GTK_TYPE_TREE_VIEW_COLUMN);
1294
1295   /**
1296    * GtkTreeView::test-expand-row:
1297    * @tree_view: the object on which the signal is emitted
1298    * @iter: the tree iter of the row to expand
1299    * @path: a tree path that points to the row
1300    *
1301    * The given row is about to be expanded (show its children nodes). Use this
1302    * signal if you need to control the expandability of individual rows.
1303    *
1304    * Returns: %FALSE to allow expansion, %TRUE to reject
1305    */
1306   tree_view_signals[TEST_EXPAND_ROW] =
1307     g_signal_new (I_("test-expand-row"),
1308                   G_TYPE_FROM_CLASS (o_class),
1309                   G_SIGNAL_RUN_LAST,
1310                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1311                   _gtk_boolean_handled_accumulator, NULL,
1312                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1313                   G_TYPE_BOOLEAN, 2,
1314                   GTK_TYPE_TREE_ITER,
1315                   GTK_TYPE_TREE_PATH);
1316
1317   /**
1318    * GtkTreeView::test-collapse-row:
1319    * @tree_view: the object on which the signal is emitted
1320    * @iter: the tree iter of the row to collapse
1321    * @path: a tree path that points to the row
1322    *
1323    * The given row is about to be collapsed (hide its children nodes). Use this
1324    * signal if you need to control the collapsibility of individual rows.
1325    *
1326    * Returns: %FALSE to allow collapsing, %TRUE to reject
1327    */
1328   tree_view_signals[TEST_COLLAPSE_ROW] =
1329     g_signal_new (I_("test-collapse-row"),
1330                   G_TYPE_FROM_CLASS (o_class),
1331                   G_SIGNAL_RUN_LAST,
1332                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1333                   _gtk_boolean_handled_accumulator, NULL,
1334                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1335                   G_TYPE_BOOLEAN, 2,
1336                   GTK_TYPE_TREE_ITER,
1337                   GTK_TYPE_TREE_PATH);
1338
1339   /**
1340    * GtkTreeView::row-expanded:
1341    * @tree_view: the object on which the signal is emitted
1342    * @iter: the tree iter of the expanded row
1343    * @path: a tree path that points to the row
1344    *
1345    * The given row has been expanded (child nodes are shown).
1346    */
1347   tree_view_signals[ROW_EXPANDED] =
1348     g_signal_new (I_("row-expanded"),
1349                   G_TYPE_FROM_CLASS (o_class),
1350                   G_SIGNAL_RUN_LAST,
1351                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1352                   NULL, NULL,
1353                   _gtk_marshal_VOID__BOXED_BOXED,
1354                   G_TYPE_NONE, 2,
1355                   GTK_TYPE_TREE_ITER,
1356                   GTK_TYPE_TREE_PATH);
1357
1358   /**
1359    * GtkTreeView::row-collapsed:
1360    * @tree_view: the object on which the signal is emitted
1361    * @iter: the tree iter of the collapsed row
1362    * @path: a tree path that points to the row
1363    *
1364    * The given row has been collapsed (child nodes are hidden).
1365    */
1366   tree_view_signals[ROW_COLLAPSED] =
1367     g_signal_new (I_("row-collapsed"),
1368                   G_TYPE_FROM_CLASS (o_class),
1369                   G_SIGNAL_RUN_LAST,
1370                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1371                   NULL, NULL,
1372                   _gtk_marshal_VOID__BOXED_BOXED,
1373                   G_TYPE_NONE, 2,
1374                   GTK_TYPE_TREE_ITER,
1375                   GTK_TYPE_TREE_PATH);
1376
1377   /**
1378    * GtkTreeView::columns-changed:
1379    * @tree_view: the object on which the signal is emitted
1380    *
1381    * The number of columns of the treeview has changed.
1382    */
1383   tree_view_signals[COLUMNS_CHANGED] =
1384     g_signal_new (I_("columns-changed"),
1385                   G_TYPE_FROM_CLASS (o_class),
1386                   G_SIGNAL_RUN_LAST,
1387                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1388                   NULL, NULL,
1389                   _gtk_marshal_VOID__VOID,
1390                   G_TYPE_NONE, 0);
1391
1392   /**
1393    * GtkTreeView::cursor-changed:
1394    * @tree_view: the object on which the signal is emitted
1395    *
1396    * The position of the cursor (focused cell) has changed.
1397    */
1398   tree_view_signals[CURSOR_CHANGED] =
1399     g_signal_new (I_("cursor-changed"),
1400                   G_TYPE_FROM_CLASS (o_class),
1401                   G_SIGNAL_RUN_LAST,
1402                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1403                   NULL, NULL,
1404                   _gtk_marshal_VOID__VOID,
1405                   G_TYPE_NONE, 0);
1406
1407   tree_view_signals[MOVE_CURSOR] =
1408     g_signal_new (I_("move-cursor"),
1409                   G_TYPE_FROM_CLASS (o_class),
1410                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1411                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1412                   NULL, NULL,
1413                   _gtk_marshal_BOOLEAN__ENUM_INT,
1414                   G_TYPE_BOOLEAN, 2,
1415                   GTK_TYPE_MOVEMENT_STEP,
1416                   G_TYPE_INT);
1417
1418   tree_view_signals[SELECT_ALL] =
1419     g_signal_new (I_("select-all"),
1420                   G_TYPE_FROM_CLASS (o_class),
1421                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1422                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1423                   NULL, NULL,
1424                   _gtk_marshal_BOOLEAN__VOID,
1425                   G_TYPE_BOOLEAN, 0);
1426
1427   tree_view_signals[UNSELECT_ALL] =
1428     g_signal_new (I_("unselect-all"),
1429                   G_TYPE_FROM_CLASS (o_class),
1430                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1431                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1432                   NULL, NULL,
1433                   _gtk_marshal_BOOLEAN__VOID,
1434                   G_TYPE_BOOLEAN, 0);
1435
1436   tree_view_signals[SELECT_CURSOR_ROW] =
1437     g_signal_new (I_("select-cursor-row"),
1438                   G_TYPE_FROM_CLASS (o_class),
1439                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1440                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1441                   NULL, NULL,
1442                   _gtk_marshal_BOOLEAN__BOOLEAN,
1443                   G_TYPE_BOOLEAN, 1,
1444                   G_TYPE_BOOLEAN);
1445
1446   tree_view_signals[TOGGLE_CURSOR_ROW] =
1447     g_signal_new (I_("toggle-cursor-row"),
1448                   G_TYPE_FROM_CLASS (o_class),
1449                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1450                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1451                   NULL, NULL,
1452                   _gtk_marshal_BOOLEAN__VOID,
1453                   G_TYPE_BOOLEAN, 0);
1454
1455   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1456     g_signal_new (I_("expand-collapse-cursor-row"),
1457                   G_TYPE_FROM_CLASS (o_class),
1458                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1459                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1460                   NULL, NULL,
1461                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1462                   G_TYPE_BOOLEAN, 3,
1463                   G_TYPE_BOOLEAN,
1464                   G_TYPE_BOOLEAN,
1465                   G_TYPE_BOOLEAN);
1466
1467   tree_view_signals[SELECT_CURSOR_PARENT] =
1468     g_signal_new (I_("select-cursor-parent"),
1469                   G_TYPE_FROM_CLASS (o_class),
1470                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1471                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1472                   NULL, NULL,
1473                   _gtk_marshal_BOOLEAN__VOID,
1474                   G_TYPE_BOOLEAN, 0);
1475
1476   tree_view_signals[START_INTERACTIVE_SEARCH] =
1477     g_signal_new (I_("start-interactive-search"),
1478                   G_TYPE_FROM_CLASS (o_class),
1479                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1480                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1481                   NULL, NULL,
1482                   _gtk_marshal_BOOLEAN__VOID,
1483                   G_TYPE_BOOLEAN, 0);
1484
1485   /* Key bindings */
1486   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1487                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1488   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1489                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1490
1491   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1492                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1493   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1494                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1495
1496   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1497                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1498
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1503                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1504   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1505                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1506
1507   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1508                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1509   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1510                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1511
1512   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1513                                   GTK_MOVEMENT_PAGES, -1);
1514   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1515                                   GTK_MOVEMENT_PAGES, -1);
1516
1517   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1518                                   GTK_MOVEMENT_PAGES, 1);
1519   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1520                                   GTK_MOVEMENT_PAGES, 1);
1521
1522
1523   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1524                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1525                                 G_TYPE_INT, 1);
1526
1527   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1528                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1529                                 G_TYPE_INT, -1);
1530
1531   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1532                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1533                                 G_TYPE_INT, 1);
1534
1535   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1536                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1537                                 G_TYPE_INT, -1);
1538
1539   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1540                                 "move-cursor", 2,
1541                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1542                                 G_TYPE_INT, 1);
1543
1544   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1545                                 "move-cursor", 2,
1546                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1547                                 G_TYPE_INT, -1);
1548
1549   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1550                                 "move-cursor", 2,
1551                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1552                                 G_TYPE_INT, 1);
1553
1554   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1555                                 "move-cursor", 2,
1556                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1557                                 G_TYPE_INT, -1);
1558
1559   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1561
1562   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1563   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1569                                 G_TYPE_BOOLEAN, TRUE);
1570   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1571                                 G_TYPE_BOOLEAN, TRUE);
1572
1573   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1574                                 G_TYPE_BOOLEAN, TRUE);
1575   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1576                                 G_TYPE_BOOLEAN, TRUE);
1577   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1578                                 G_TYPE_BOOLEAN, TRUE);
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583
1584   /* expand and collapse rows */
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1586                                 G_TYPE_BOOLEAN, TRUE,
1587                                 G_TYPE_BOOLEAN, TRUE,
1588                                 G_TYPE_BOOLEAN, FALSE);
1589
1590   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1591                                 "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, TRUE);
1595   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1596                                 "expand-collapse-cursor-row", 3,
1597                                 G_TYPE_BOOLEAN, TRUE,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE);
1600
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, FALSE,
1605                                 G_TYPE_BOOLEAN, FALSE);
1606   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1607                                 "expand-collapse-cursor-row", 3,
1608                                 G_TYPE_BOOLEAN, TRUE,
1609                                 G_TYPE_BOOLEAN, FALSE,
1610                                 G_TYPE_BOOLEAN, FALSE);
1611
1612   /* Not doable on US keyboards */
1613   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, TRUE,
1616                                 G_TYPE_BOOLEAN, TRUE);
1617   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1618                                 G_TYPE_BOOLEAN, TRUE,
1619                                 G_TYPE_BOOLEAN, TRUE,
1620                                 G_TYPE_BOOLEAN, FALSE);
1621   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1622                                 G_TYPE_BOOLEAN, TRUE,
1623                                 G_TYPE_BOOLEAN, TRUE,
1624                                 G_TYPE_BOOLEAN, TRUE);
1625   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1626                                 G_TYPE_BOOLEAN, TRUE,
1627                                 G_TYPE_BOOLEAN, TRUE,
1628                                 G_TYPE_BOOLEAN, TRUE);
1629   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1630                                 "expand-collapse-cursor-row", 3,
1631                                 G_TYPE_BOOLEAN, FALSE,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE);
1634   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1635                                 "expand-collapse-cursor-row", 3,
1636                                 G_TYPE_BOOLEAN, FALSE,
1637                                 G_TYPE_BOOLEAN, TRUE,
1638                                 G_TYPE_BOOLEAN, TRUE);
1639   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1640                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651
1652   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1653                                 G_TYPE_BOOLEAN, TRUE,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, FALSE);
1656   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1657                                 G_TYPE_BOOLEAN, TRUE,
1658                                 G_TYPE_BOOLEAN, FALSE,
1659                                 G_TYPE_BOOLEAN, TRUE);
1660   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1661                                 G_TYPE_BOOLEAN, TRUE,
1662                                 G_TYPE_BOOLEAN, FALSE,
1663                                 G_TYPE_BOOLEAN, FALSE);
1664   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1665                                 G_TYPE_BOOLEAN, TRUE,
1666                                 G_TYPE_BOOLEAN, FALSE,
1667                                 G_TYPE_BOOLEAN, TRUE);
1668   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1669                                 "expand-collapse-cursor-row", 3,
1670                                 G_TYPE_BOOLEAN, FALSE,
1671                                 G_TYPE_BOOLEAN, FALSE,
1672                                 G_TYPE_BOOLEAN, TRUE);
1673   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1674                                 "expand-collapse-cursor-row", 3,
1675                                 G_TYPE_BOOLEAN, FALSE,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, TRUE);
1678   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1679                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690
1691   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1692   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1693
1694   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1695
1696   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1697
1698   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1699
1700   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1701 }
1702
1703 static void
1704 gtk_tree_view_init (GtkTreeView *tree_view)
1705 {
1706   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1707
1708   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1709   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1710
1711   tree_view->priv->show_expanders = TRUE;
1712   tree_view->priv->draw_keyfocus = TRUE;
1713   tree_view->priv->headers_visible = TRUE;
1714
1715   /* We need some padding */
1716   tree_view->priv->dy = 0;
1717   tree_view->priv->cursor_offset = 0;
1718   tree_view->priv->n_columns = 0;
1719   tree_view->priv->header_height = 1;
1720   tree_view->priv->x_drag = 0;
1721   tree_view->priv->drag_pos = -1;
1722   tree_view->priv->header_has_focus = FALSE;
1723   tree_view->priv->pressed_button = -1;
1724   tree_view->priv->press_start_x = -1;
1725   tree_view->priv->press_start_y = -1;
1726   tree_view->priv->reorderable = FALSE;
1727   tree_view->priv->presize_handler_timer = 0;
1728   tree_view->priv->scroll_sync_timer = 0;
1729   tree_view->priv->fixed_height = -1;
1730   tree_view->priv->fixed_height_mode = FALSE;
1731   tree_view->priv->fixed_height_check = 0;
1732   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1733   tree_view->priv->enable_search = TRUE;
1734   tree_view->priv->search_column = -1;
1735   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1736   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1737   tree_view->priv->search_custom_entry_set = FALSE;
1738   tree_view->priv->typeselect_flush_timeout = 0;
1739   tree_view->priv->init_hadjust_value = TRUE;
1740   tree_view->priv->width = 0;
1741
1742   tree_view->priv->hover_selection = FALSE;
1743   tree_view->priv->hover_expand = FALSE;
1744
1745   tree_view->priv->level_indentation = 0;
1746
1747   tree_view->priv->rubber_banding_enable = FALSE;
1748
1749   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1750   tree_view->priv->tree_lines_enabled = FALSE;
1751
1752   tree_view->priv->tooltip_column = -1;
1753
1754   tree_view->priv->post_validation_flag = FALSE;
1755
1756   tree_view->priv->last_button_x = -1;
1757   tree_view->priv->last_button_y = -1;
1758
1759   tree_view->priv->event_last_x = -10000;
1760   tree_view->priv->event_last_y = -10000;
1761
1762   gtk_tree_view_set_vadjustment (tree_view, NULL);
1763   gtk_tree_view_set_hadjustment (tree_view, NULL);
1764 }
1765
1766 \f
1767
1768 /* GObject Methods
1769  */
1770
1771 static void
1772 gtk_tree_view_set_property (GObject         *object,
1773                             guint            prop_id,
1774                             const GValue    *value,
1775                             GParamSpec      *pspec)
1776 {
1777   GtkTreeView *tree_view;
1778
1779   tree_view = GTK_TREE_VIEW (object);
1780
1781   switch (prop_id)
1782     {
1783     case PROP_MODEL:
1784       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1785       break;
1786     case PROP_HADJUSTMENT:
1787       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1788       break;
1789     case PROP_VADJUSTMENT:
1790       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HSCROLL_POLICY:
1793       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1794       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1795       break;
1796     case PROP_VSCROLL_POLICY:
1797       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1798       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1799       break;
1800     case PROP_HEADERS_VISIBLE:
1801       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1802       break;
1803     case PROP_HEADERS_CLICKABLE:
1804       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1805       break;
1806     case PROP_EXPANDER_COLUMN:
1807       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1808       break;
1809     case PROP_REORDERABLE:
1810       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_RULES_HINT:
1813       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1814       break;
1815     case PROP_ENABLE_SEARCH:
1816       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_SEARCH_COLUMN:
1819       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1820       break;
1821     case PROP_FIXED_HEIGHT_MODE:
1822       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_HOVER_SELECTION:
1825       tree_view->priv->hover_selection = g_value_get_boolean (value);
1826       break;
1827     case PROP_HOVER_EXPAND:
1828       tree_view->priv->hover_expand = g_value_get_boolean (value);
1829       break;
1830     case PROP_SHOW_EXPANDERS:
1831       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1832       break;
1833     case PROP_LEVEL_INDENTATION:
1834       tree_view->priv->level_indentation = g_value_get_int (value);
1835       break;
1836     case PROP_RUBBER_BANDING:
1837       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1838       break;
1839     case PROP_ENABLE_GRID_LINES:
1840       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1841       break;
1842     case PROP_ENABLE_TREE_LINES:
1843       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1844       break;
1845     case PROP_TOOLTIP_COLUMN:
1846       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1847       break;
1848     default:
1849       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1850       break;
1851     }
1852 }
1853
1854 static void
1855 gtk_tree_view_get_property (GObject    *object,
1856                             guint       prop_id,
1857                             GValue     *value,
1858                             GParamSpec *pspec)
1859 {
1860   GtkTreeView *tree_view;
1861
1862   tree_view = GTK_TREE_VIEW (object);
1863
1864   switch (prop_id)
1865     {
1866     case PROP_MODEL:
1867       g_value_set_object (value, tree_view->priv->model);
1868       break;
1869     case PROP_HADJUSTMENT:
1870       g_value_set_object (value, tree_view->priv->hadjustment);
1871       break;
1872     case PROP_VADJUSTMENT:
1873       g_value_set_object (value, tree_view->priv->vadjustment);
1874       break;
1875     case PROP_HSCROLL_POLICY:
1876       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1877       break;
1878     case PROP_VSCROLL_POLICY:
1879       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1880       break;
1881     case PROP_HEADERS_VISIBLE:
1882       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1883       break;
1884     case PROP_HEADERS_CLICKABLE:
1885       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1886       break;
1887     case PROP_EXPANDER_COLUMN:
1888       g_value_set_object (value, tree_view->priv->expander_column);
1889       break;
1890     case PROP_REORDERABLE:
1891       g_value_set_boolean (value, tree_view->priv->reorderable);
1892       break;
1893     case PROP_RULES_HINT:
1894       g_value_set_boolean (value, tree_view->priv->has_rules);
1895       break;
1896     case PROP_ENABLE_SEARCH:
1897       g_value_set_boolean (value, tree_view->priv->enable_search);
1898       break;
1899     case PROP_SEARCH_COLUMN:
1900       g_value_set_int (value, tree_view->priv->search_column);
1901       break;
1902     case PROP_FIXED_HEIGHT_MODE:
1903       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1904       break;
1905     case PROP_HOVER_SELECTION:
1906       g_value_set_boolean (value, tree_view->priv->hover_selection);
1907       break;
1908     case PROP_HOVER_EXPAND:
1909       g_value_set_boolean (value, tree_view->priv->hover_expand);
1910       break;
1911     case PROP_SHOW_EXPANDERS:
1912       g_value_set_boolean (value, tree_view->priv->show_expanders);
1913       break;
1914     case PROP_LEVEL_INDENTATION:
1915       g_value_set_int (value, tree_view->priv->level_indentation);
1916       break;
1917     case PROP_RUBBER_BANDING:
1918       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1919       break;
1920     case PROP_ENABLE_GRID_LINES:
1921       g_value_set_enum (value, tree_view->priv->grid_lines);
1922       break;
1923     case PROP_ENABLE_TREE_LINES:
1924       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1925       break;
1926     case PROP_TOOLTIP_COLUMN:
1927       g_value_set_int (value, tree_view->priv->tooltip_column);
1928       break;
1929     default:
1930       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1931       break;
1932     }
1933 }
1934
1935 static void
1936 gtk_tree_view_finalize (GObject *object)
1937 {
1938   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1939 }
1940
1941
1942 static GtkBuildableIface *parent_buildable_iface;
1943
1944 static void
1945 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1946 {
1947   parent_buildable_iface = g_type_interface_peek_parent (iface);
1948   iface->add_child = gtk_tree_view_buildable_add_child;
1949   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1950 }
1951
1952 static void
1953 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1954                                    GtkBuilder  *builder,
1955                                    GObject     *child,
1956                                    const gchar *type)
1957 {
1958   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1959 }
1960
1961 static GObject *
1962 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1963                                             GtkBuilder        *builder,
1964                                             const gchar       *childname)
1965 {
1966     if (strcmp (childname, "selection") == 0)
1967       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1968
1969     return parent_buildable_iface->get_internal_child (buildable,
1970                                                        builder,
1971                                                        childname);
1972 }
1973
1974 /* GtkWidget Methods
1975  */
1976
1977 static void
1978 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1979 {
1980   _gtk_rbtree_free (tree_view->priv->tree);
1981
1982   tree_view->priv->tree = NULL;
1983   tree_view->priv->button_pressed_node = NULL;
1984   tree_view->priv->button_pressed_tree = NULL;
1985   tree_view->priv->prelight_tree = NULL;
1986   tree_view->priv->prelight_node = NULL;
1987   tree_view->priv->expanded_collapsed_node = NULL;
1988   tree_view->priv->expanded_collapsed_tree = NULL;
1989 }
1990
1991 static void
1992 gtk_tree_view_destroy (GtkWidget *widget)
1993 {
1994   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1995   GList *list;
1996
1997   gtk_tree_view_stop_editing (tree_view, TRUE);
1998
1999   if (tree_view->priv->columns != NULL)
2000     {
2001       list = tree_view->priv->columns;
2002       while (list)
2003         {
2004           GtkTreeViewColumn *column;
2005           column = GTK_TREE_VIEW_COLUMN (list->data);
2006           list = list->next;
2007           gtk_tree_view_remove_column (tree_view, column);
2008         }
2009       tree_view->priv->columns = NULL;
2010     }
2011
2012   if (tree_view->priv->tree != NULL)
2013     {
2014       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2015
2016       gtk_tree_view_free_rbtree (tree_view);
2017     }
2018
2019   if (tree_view->priv->selection != NULL)
2020     {
2021       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2022       g_object_unref (tree_view->priv->selection);
2023       tree_view->priv->selection = NULL;
2024     }
2025
2026   if (tree_view->priv->scroll_to_path != NULL)
2027     {
2028       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2029       tree_view->priv->scroll_to_path = NULL;
2030     }
2031
2032   if (tree_view->priv->drag_dest_row != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2035       tree_view->priv->drag_dest_row = NULL;
2036     }
2037
2038   if (tree_view->priv->top_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->top_row);
2041       tree_view->priv->top_row = NULL;
2042     }
2043
2044   if (tree_view->priv->column_drop_func_data &&
2045       tree_view->priv->column_drop_func_data_destroy)
2046     {
2047       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2048       tree_view->priv->column_drop_func_data = NULL;
2049     }
2050
2051   if (tree_view->priv->destroy_count_destroy &&
2052       tree_view->priv->destroy_count_data)
2053     {
2054       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2055       tree_view->priv->destroy_count_data = NULL;
2056     }
2057
2058   gtk_tree_row_reference_free (tree_view->priv->cursor);
2059   tree_view->priv->cursor = NULL;
2060
2061   gtk_tree_row_reference_free (tree_view->priv->anchor);
2062   tree_view->priv->anchor = NULL;
2063
2064   /* destroy interactive search dialog */
2065   if (tree_view->priv->search_window)
2066     {
2067       gtk_widget_destroy (tree_view->priv->search_window);
2068       tree_view->priv->search_window = NULL;
2069       tree_view->priv->search_entry = NULL;
2070       if (tree_view->priv->typeselect_flush_timeout)
2071         {
2072           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2073           tree_view->priv->typeselect_flush_timeout = 0;
2074         }
2075     }
2076
2077   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2078     {
2079       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2080       tree_view->priv->search_user_data = NULL;
2081     }
2082
2083   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2084     {
2085       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2086       tree_view->priv->search_position_user_data = NULL;
2087     }
2088
2089   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2090     {
2091       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2092       tree_view->priv->row_separator_data = NULL;
2093     }
2094
2095   gtk_tree_view_set_model (tree_view, NULL);
2096
2097   if (tree_view->priv->hadjustment)
2098     {
2099       g_object_unref (tree_view->priv->hadjustment);
2100       tree_view->priv->hadjustment = NULL;
2101     }
2102   if (tree_view->priv->vadjustment)
2103     {
2104       g_object_unref (tree_view->priv->vadjustment);
2105       tree_view->priv->vadjustment = NULL;
2106     }
2107
2108   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2109 }
2110
2111 /* GtkWidget::map helper */
2112 static void
2113 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2114 {
2115   GList *list;
2116
2117   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2118
2119   if (tree_view->priv->headers_visible)
2120     {
2121       GtkTreeViewColumn *column;
2122       GtkWidget         *button;
2123       GdkWindow         *window;
2124
2125       for (list = tree_view->priv->columns; list; list = list->next)
2126         {
2127           column = list->data;
2128           button = gtk_tree_view_column_get_button (column);
2129
2130           if (gtk_tree_view_column_get_visible (column) && button)
2131             gtk_widget_show_now (button);
2132
2133           if (gtk_widget_get_visible (button) &&
2134               !gtk_widget_get_mapped (button))
2135             gtk_widget_map (button);
2136         }
2137       for (list = tree_view->priv->columns; list; list = list->next)
2138         {
2139           column = list->data;
2140           if (gtk_tree_view_column_get_visible (column) == FALSE)
2141             continue;
2142
2143           window = _gtk_tree_view_column_get_window (column);
2144           if (gtk_tree_view_column_get_resizable (column))
2145             {
2146               gdk_window_raise (window);
2147               gdk_window_show (window);
2148             }
2149           else
2150             gdk_window_hide (window);
2151         }
2152       gdk_window_show (tree_view->priv->header_window);
2153     }
2154 }
2155
2156 static void
2157 gtk_tree_view_map (GtkWidget *widget)
2158 {
2159   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2160   GList *tmp_list;
2161
2162   gtk_widget_set_mapped (widget, TRUE);
2163
2164   tmp_list = tree_view->priv->children;
2165   while (tmp_list)
2166     {
2167       GtkTreeViewChild *child = tmp_list->data;
2168       tmp_list = tmp_list->next;
2169
2170       if (gtk_widget_get_visible (child->widget))
2171         {
2172           if (!gtk_widget_get_mapped (child->widget))
2173             gtk_widget_map (child->widget);
2174         }
2175     }
2176   gdk_window_show (tree_view->priv->bin_window);
2177
2178   gtk_tree_view_map_buttons (tree_view);
2179
2180   gdk_window_show (gtk_widget_get_window (widget));
2181 }
2182
2183 static void
2184 gtk_tree_view_realize (GtkWidget *widget)
2185 {
2186   GtkAllocation allocation;
2187   GtkStyleContext *context;
2188   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2189   GdkWindow *window;
2190   GdkWindowAttr attributes;
2191   GList *tmp_list;
2192   gint attributes_mask;
2193
2194   gtk_widget_set_realized (widget, TRUE);
2195
2196   gtk_widget_get_allocation (widget, &allocation);
2197
2198   /* Make the main, clipping window */
2199   attributes.window_type = GDK_WINDOW_CHILD;
2200   attributes.x = allocation.x;
2201   attributes.y = allocation.y;
2202   attributes.width = allocation.width;
2203   attributes.height = allocation.height;
2204   attributes.wclass = GDK_INPUT_OUTPUT;
2205   attributes.visual = gtk_widget_get_visual (widget);
2206   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2207
2208   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2209
2210   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2211                            &attributes, attributes_mask);
2212   gtk_widget_set_window (widget, window);
2213   gdk_window_set_user_data (window, widget);
2214
2215   gtk_widget_get_allocation (widget, &allocation);
2216
2217   /* Make the window for the tree */
2218   attributes.x = 0;
2219   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2220   attributes.width = MAX (tree_view->priv->width, allocation.width);
2221   attributes.height = allocation.height;
2222   attributes.event_mask = (GDK_EXPOSURE_MASK |
2223                            GDK_SCROLL_MASK |
2224                            GDK_POINTER_MOTION_MASK |
2225                            GDK_ENTER_NOTIFY_MASK |
2226                            GDK_LEAVE_NOTIFY_MASK |
2227                            GDK_BUTTON_PRESS_MASK |
2228                            GDK_BUTTON_RELEASE_MASK |
2229                            gtk_widget_get_events (widget));
2230
2231   tree_view->priv->bin_window = gdk_window_new (window,
2232                                                 &attributes, attributes_mask);
2233   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2234
2235   gtk_widget_get_allocation (widget, &allocation);
2236
2237   /* Make the column header window */
2238   attributes.x = 0;
2239   attributes.y = 0;
2240   attributes.width = MAX (tree_view->priv->width, allocation.width);
2241   attributes.height = tree_view->priv->header_height;
2242   attributes.event_mask = (GDK_EXPOSURE_MASK |
2243                            GDK_SCROLL_MASK |
2244                            GDK_ENTER_NOTIFY_MASK |
2245                            GDK_LEAVE_NOTIFY_MASK |
2246                            GDK_BUTTON_PRESS_MASK |
2247                            GDK_BUTTON_RELEASE_MASK |
2248                            GDK_KEY_PRESS_MASK |
2249                            GDK_KEY_RELEASE_MASK |
2250                            gtk_widget_get_events (widget));
2251
2252   tree_view->priv->header_window = gdk_window_new (window,
2253                                                    &attributes, attributes_mask);
2254   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2255
2256   context = gtk_widget_get_style_context (widget);
2257
2258   gtk_style_context_save (context);
2259   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2260   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2261   gtk_style_context_restore (context);
2262
2263   gtk_style_context_set_background (context, tree_view->priv->header_window);
2264
2265   tmp_list = tree_view->priv->children;
2266   while (tmp_list)
2267     {
2268       GtkTreeViewChild *child = tmp_list->data;
2269       tmp_list = tmp_list->next;
2270
2271       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2272     }
2273
2274   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2275     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2276
2277   /* Need to call those here, since they create GCs */
2278   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2279   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2280
2281   install_presize_handler (tree_view);
2282 }
2283
2284 static void
2285 gtk_tree_view_unrealize (GtkWidget *widget)
2286 {
2287   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2288   GtkTreeViewPrivate *priv = tree_view->priv;
2289   GtkStyleContext *context;
2290   GList *list;
2291
2292   if (priv->scroll_timeout != 0)
2293     {
2294       g_source_remove (priv->scroll_timeout);
2295       priv->scroll_timeout = 0;
2296     }
2297
2298   if (priv->auto_expand_timeout != 0)
2299     {
2300       g_source_remove (priv->auto_expand_timeout);
2301       priv->auto_expand_timeout = 0;
2302     }
2303
2304   if (priv->open_dest_timeout != 0)
2305     {
2306       g_source_remove (priv->open_dest_timeout);
2307       priv->open_dest_timeout = 0;
2308     }
2309
2310   context = gtk_widget_get_style_context (widget);
2311   gtk_style_context_cancel_animations (context, NULL);
2312
2313   if (priv->presize_handler_timer != 0)
2314     {
2315       g_source_remove (priv->presize_handler_timer);
2316       priv->presize_handler_timer = 0;
2317     }
2318
2319   if (priv->validate_rows_timer != 0)
2320     {
2321       g_source_remove (priv->validate_rows_timer);
2322       priv->validate_rows_timer = 0;
2323     }
2324
2325   if (priv->scroll_sync_timer != 0)
2326     {
2327       g_source_remove (priv->scroll_sync_timer);
2328       priv->scroll_sync_timer = 0;
2329     }
2330
2331   if (priv->typeselect_flush_timeout)
2332     {
2333       g_source_remove (priv->typeselect_flush_timeout);
2334       priv->typeselect_flush_timeout = 0;
2335     }
2336
2337   for (list = priv->columns; list; list = list->next)
2338     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2339
2340   gdk_window_set_user_data (priv->bin_window, NULL);
2341   gdk_window_destroy (priv->bin_window);
2342   priv->bin_window = NULL;
2343
2344   gdk_window_set_user_data (priv->header_window, NULL);
2345   gdk_window_destroy (priv->header_window);
2346   priv->header_window = NULL;
2347
2348   if (priv->drag_window)
2349     {
2350       gdk_window_set_user_data (priv->drag_window, NULL);
2351       gdk_window_destroy (priv->drag_window);
2352       priv->drag_window = NULL;
2353     }
2354
2355   if (priv->drag_highlight_window)
2356     {
2357       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2358       gdk_window_destroy (priv->drag_highlight_window);
2359       priv->drag_highlight_window = NULL;
2360     }
2361
2362   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2363 }
2364
2365 /* GtkWidget::size_request helper */
2366 static void
2367 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2368 {
2369   GList *list;
2370
2371   tree_view->priv->header_height = 0;
2372
2373   for (list = tree_view->priv->columns; list; list = list->next)
2374     {
2375       GtkRequisition     requisition;
2376       GtkTreeViewColumn *column = list->data;
2377       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2378
2379       if (button == NULL)
2380         continue;
2381
2382       gtk_widget_get_preferred_size (button, &requisition, NULL);
2383       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2384     }
2385 }
2386
2387
2388 /* Called only by ::size_request */
2389 static void
2390 gtk_tree_view_update_size (GtkTreeView *tree_view)
2391 {
2392   GList *list;
2393   GtkTreeViewColumn *column;
2394   gint i;
2395
2396   if (tree_view->priv->model == NULL)
2397     {
2398       tree_view->priv->width = 0;
2399       tree_view->priv->prev_width = 0;
2400       tree_view->priv->height = 0;
2401       return;
2402     }
2403
2404   tree_view->priv->prev_width = tree_view->priv->width;
2405   tree_view->priv->width = 0;
2406
2407   /* keep this in sync with size_allocate below */
2408   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2409     {
2410       column = list->data;
2411       if (!gtk_tree_view_column_get_visible (column))
2412         continue;
2413
2414       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2415     }
2416
2417   if (tree_view->priv->tree == NULL)
2418     tree_view->priv->height = 0;
2419   else
2420     tree_view->priv->height = tree_view->priv->tree->root->offset;
2421 }
2422
2423 static void
2424 gtk_tree_view_size_request (GtkWidget      *widget,
2425                             GtkRequisition *requisition,
2426                             gboolean        may_validate)
2427 {
2428   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2429
2430   if (may_validate)
2431     {
2432       /* we validate some rows initially just to make sure we have some size.
2433        * In practice, with a lot of static lists, this should get a good width.
2434        */
2435       do_validate_rows (tree_view, FALSE);
2436     }
2437
2438   gtk_tree_view_size_request_columns (tree_view);
2439   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2440
2441   requisition->width = tree_view->priv->width;
2442   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2443 }
2444
2445 static void
2446 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2447                                    gint      *minimum,
2448                                    gint      *natural)
2449 {
2450   GtkRequisition requisition;
2451
2452   gtk_tree_view_size_request (widget, &requisition, TRUE);
2453
2454   *minimum = *natural = requisition.width;
2455 }
2456
2457 static void
2458 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2459                                     gint      *minimum,
2460                                     gint      *natural)
2461 {
2462   GtkRequisition requisition;
2463
2464   gtk_tree_view_size_request (widget, &requisition, TRUE);
2465
2466   *minimum = *natural = requisition.height;
2467 }
2468
2469 static int
2470 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2471 {
2472   int width = 0;
2473   GList *list;
2474   gboolean rtl;
2475
2476   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2477   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2478        list->data != tree_view->priv->expander_column;
2479        list = (rtl ? list->prev : list->next))
2480     {
2481       GtkTreeViewColumn *column = list->data;
2482
2483       width += gtk_tree_view_column_get_width (column);
2484     }
2485
2486   return width;
2487 }
2488
2489 /* GtkWidget::size_allocate helper */
2490 static void
2491 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2492                                      gboolean  *width_changed)
2493 {
2494   GtkTreeView *tree_view;
2495   GList *list, *first_column, *last_column;
2496   GtkTreeViewColumn *column;
2497   GtkAllocation widget_allocation;
2498   gint width = 0;
2499   gint extra, extra_per_column, extra_for_last;
2500   gint full_requested_width = 0;
2501   gint number_of_expand_columns = 0;
2502   gboolean rtl;
2503   gboolean update_expand;
2504
2505   tree_view = GTK_TREE_VIEW (widget);
2506
2507   for (last_column = g_list_last (tree_view->priv->columns);
2508        last_column &&
2509        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2510        last_column = last_column->prev)
2511     ;
2512   if (last_column == NULL)
2513     return;
2514
2515   for (first_column = g_list_first (tree_view->priv->columns);
2516        first_column &&
2517        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2518        first_column = first_column->next)
2519     ;
2520
2521   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2522
2523   /* find out how many extra space and expandable columns we have */
2524   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2525     {
2526       column = (GtkTreeViewColumn *)list->data;
2527
2528       if (!gtk_tree_view_column_get_visible (column))
2529         continue;
2530
2531       full_requested_width += _gtk_tree_view_column_request_width (column);
2532
2533       if (gtk_tree_view_column_get_expand (column))
2534         number_of_expand_columns++;
2535     }
2536
2537   /* Only update the expand value if the width of the widget has changed,
2538    * or the number of expand columns has changed, or if there are no expand
2539    * columns, or if we didn't have an size-allocation yet after the
2540    * last validated node.
2541    */
2542   update_expand = (width_changed && *width_changed == TRUE)
2543       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2544       || number_of_expand_columns == 0
2545       || tree_view->priv->post_validation_flag == TRUE;
2546
2547   tree_view->priv->post_validation_flag = FALSE;
2548
2549   gtk_widget_get_allocation (widget, &widget_allocation);
2550   if (!update_expand)
2551     {
2552       extra = tree_view->priv->last_extra_space;
2553       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2554     }
2555   else
2556     {
2557       extra = MAX (widget_allocation.width - full_requested_width, 0);
2558       extra_for_last = 0;
2559
2560       tree_view->priv->last_extra_space = extra;
2561     }
2562
2563   if (number_of_expand_columns > 0)
2564     extra_per_column = extra/number_of_expand_columns;
2565   else
2566     extra_per_column = 0;
2567
2568   if (update_expand)
2569     {
2570       tree_view->priv->last_extra_space_per_column = extra_per_column;
2571       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2572     }
2573
2574   for (list = (rtl ? last_column : first_column);
2575        list != (rtl ? first_column->prev : last_column->next);
2576        list = (rtl ? list->prev : list->next))
2577     {
2578       gint column_width;
2579
2580       column = list->data;
2581
2582       if (!gtk_tree_view_column_get_visible (column))
2583         continue;
2584
2585       /* We need to handle the dragged button specially.
2586        */
2587       if (column == tree_view->priv->drag_column)
2588         {
2589           GtkAllocation drag_allocation;
2590           GtkWidget    *button;
2591
2592           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2593
2594           drag_allocation.x = 0;
2595           drag_allocation.y = 0;
2596           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2597           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2598           gtk_widget_size_allocate (button, &drag_allocation);
2599           width += drag_allocation.width;
2600           continue;
2601         }
2602
2603       column_width = _gtk_tree_view_column_request_width (column);
2604
2605       if (gtk_tree_view_column_get_expand (column))
2606         {
2607           if (number_of_expand_columns == 1)
2608             {
2609               /* We add the remander to the last column as
2610                * */
2611               column_width += extra;
2612             }
2613           else
2614             {
2615               column_width += extra_per_column;
2616               extra -= extra_per_column;
2617               number_of_expand_columns --;
2618             }
2619         }
2620       else if (number_of_expand_columns == 0 &&
2621                list == last_column)
2622         {
2623           column_width += extra;
2624         }
2625
2626       /* In addition to expand, the last column can get even more
2627        * extra space so all available space is filled up.
2628        */
2629       if (extra_for_last > 0 && list == last_column)
2630         column_width += extra_for_last;
2631
2632       _gtk_tree_view_column_allocate (column, width, column_width);
2633
2634       width += column_width;
2635     }
2636
2637   /* We change the width here.  The user might have been resizing columns,
2638    * which changes the total width of the tree view.  This is of
2639    * importance for getting the horizontal scroll bar right.
2640    */
2641   if (tree_view->priv->width != width)
2642     {
2643       tree_view->priv->width = width;
2644       if (width_changed)
2645         *width_changed = TRUE;
2646     }
2647 }
2648
2649
2650 static void
2651 gtk_tree_view_size_allocate (GtkWidget     *widget,
2652                              GtkAllocation *allocation)
2653 {
2654   GtkAllocation widget_allocation;
2655   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2656   GList *tmp_list;
2657   gboolean width_changed = FALSE;
2658   gint old_width;
2659
2660   gtk_widget_get_allocation (widget, &widget_allocation);
2661   old_width = widget_allocation.width;
2662   if (allocation->width != widget_allocation.width)
2663     width_changed = TRUE;
2664
2665   gtk_widget_set_allocation (widget, allocation);
2666
2667   tmp_list = tree_view->priv->children;
2668
2669   while (tmp_list)
2670     {
2671       GtkAllocation allocation;
2672
2673       GtkTreeViewChild *child = tmp_list->data;
2674       tmp_list = tmp_list->next;
2675
2676       /* totally ignore our child's requisition */
2677       allocation.x = child->x;
2678       allocation.y = child->y;
2679       allocation.width = child->width;
2680       allocation.height = child->height;
2681       gtk_widget_size_allocate (child->widget, &allocation);
2682     }
2683
2684   /* We size-allocate the columns first because the width of the
2685    * tree view (used in updating the adjustments below) might change.
2686    */
2687   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2688
2689   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2690   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2691                                 allocation->width);
2692   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2693                                      allocation->width * 0.9);
2694   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2695                                      allocation->width * 0.1);
2696   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2697   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2698                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2699                                  tree_view->priv->width));
2700   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2701
2702   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2703     {
2704       if (allocation->width < tree_view->priv->width)
2705         {
2706           if (tree_view->priv->init_hadjust_value)
2707             {
2708               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2709                                         MAX (tree_view->priv->width -
2710                                              allocation->width, 0));
2711               tree_view->priv->init_hadjust_value = FALSE;
2712             }
2713           else if (allocation->width != old_width)
2714             {
2715               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2716                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2717                                                0,
2718                                                tree_view->priv->width - allocation->width));
2719             }
2720           else
2721             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2722                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2723                                              0,
2724                                              tree_view->priv->width - allocation->width));
2725         }
2726       else
2727         {
2728           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2729           tree_view->priv->init_hadjust_value = TRUE;
2730         }
2731     }
2732   else
2733     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2734       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2735                                 MAX (tree_view->priv->width -
2736                                      allocation->width, 0));
2737
2738   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2739   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2740                                 allocation->height -
2741                                 gtk_tree_view_get_effective_header_height (tree_view));
2742   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2743                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2744   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2745                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2746   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2747   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2748                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2749                                  tree_view->priv->height));
2750   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2751
2752   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2753   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2754     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2755   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2756     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2757                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2758   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2759     gtk_tree_view_top_row_to_dy (tree_view);
2760   else
2761     gtk_tree_view_dy_to_top_row (tree_view);
2762
2763   if (gtk_widget_get_realized (widget))
2764     {
2765       gdk_window_move_resize (gtk_widget_get_window (widget),
2766                               allocation->x, allocation->y,
2767                               allocation->width, allocation->height);
2768       gdk_window_move_resize (tree_view->priv->header_window,
2769                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2770                               0,
2771                               MAX (tree_view->priv->width, allocation->width),
2772                               tree_view->priv->header_height);
2773       gdk_window_move_resize (tree_view->priv->bin_window,
2774                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2775                               gtk_tree_view_get_effective_header_height (tree_view),
2776                               MAX (tree_view->priv->width, allocation->width),
2777                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2778
2779       if (tree_view->priv->tree == NULL)
2780         invalidate_empty_focus (tree_view);
2781
2782       if (width_changed && tree_view->priv->expander_column)
2783         {
2784           /* Might seem awkward, but is the best heuristic I could come up
2785            * with.  Only if the width of the columns before the expander
2786            * changes, we will update the prelight status.  It is this
2787            * width that makes the expander move vertically.  Always updating
2788            * prelight status causes trouble with hover selections.
2789            */
2790           gint width_before_expander;
2791
2792           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2793
2794           if (tree_view->priv->prev_width_before_expander
2795               != width_before_expander)
2796               update_prelight (tree_view,
2797                                tree_view->priv->event_last_x,
2798                                tree_view->priv->event_last_y);
2799
2800           tree_view->priv->prev_width_before_expander = width_before_expander;
2801         }
2802     }
2803 }
2804
2805 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2806 static void
2807 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2808 {
2809   GtkWidget *widget = GTK_WIDGET (tree_view);
2810
2811   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2812     gtk_widget_grab_focus (widget);
2813   tree_view->priv->draw_keyfocus = 0;
2814 }
2815
2816 static inline gboolean
2817 row_is_separator (GtkTreeView *tree_view,
2818                   GtkTreeIter *iter,
2819                   GtkTreePath *path)
2820 {
2821   gboolean is_separator = FALSE;
2822
2823   if (tree_view->priv->row_separator_func)
2824     {
2825       GtkTreeIter tmpiter;
2826
2827       if (iter)
2828         tmpiter = *iter;
2829       else
2830         {
2831           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2832             return FALSE;
2833         }
2834
2835       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2836                                                           &tmpiter,
2837                                                           tree_view->priv->row_separator_data);
2838     }
2839
2840   return is_separator;
2841 }
2842
2843 static gboolean
2844 gtk_tree_view_button_press (GtkWidget      *widget,
2845                             GdkEventButton *event)
2846 {
2847   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2848   GList *list;
2849   GtkTreeViewColumn *column = NULL;
2850   gint i;
2851   GdkRectangle background_area;
2852   GdkRectangle cell_area;
2853   gint vertical_separator;
2854   gint horizontal_separator;
2855   gboolean path_is_selectable;
2856   gboolean rtl;
2857
2858   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2859   gtk_tree_view_stop_editing (tree_view, FALSE);
2860   gtk_widget_style_get (widget,
2861                         "vertical-separator", &vertical_separator,
2862                         "horizontal-separator", &horizontal_separator,
2863                         NULL);
2864
2865   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2866    * we're done handling the button press.
2867    */
2868
2869   if (event->window == tree_view->priv->bin_window)
2870     {
2871       GtkRBNode *node;
2872       GtkRBTree *tree;
2873       GtkTreePath *path;
2874       gint depth;
2875       gint new_y;
2876       gint y_offset;
2877       gint dval;
2878       gint pre_val, aft_val;
2879       GtkTreeViewColumn *column = NULL;
2880       gint column_handled_click = FALSE;
2881       gboolean row_double_click = FALSE;
2882       gboolean rtl;
2883       gboolean node_selected;
2884
2885       /* Empty tree? */
2886       if (tree_view->priv->tree == NULL)
2887         {
2888           grab_focus_and_unset_draw_keyfocus (tree_view);
2889           return TRUE;
2890         }
2891
2892       /* are we in an arrow? */
2893       if (tree_view->priv->prelight_node &&
2894           tree_view->priv->arrow_prelit &&
2895           gtk_tree_view_draw_expanders (tree_view))
2896         {
2897           if (event->button == 1)
2898             {
2899               gtk_grab_add (widget);
2900               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2901               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2902               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2903                                               tree_view->priv->prelight_tree,
2904                                               tree_view->priv->prelight_node);
2905             }
2906
2907           grab_focus_and_unset_draw_keyfocus (tree_view);
2908           return TRUE;
2909         }
2910
2911       /* find the node that was clicked */
2912       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2913       if (new_y < 0)
2914         new_y = 0;
2915       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2916
2917       if (node == NULL)
2918         {
2919           /* We clicked in dead space */
2920           grab_focus_and_unset_draw_keyfocus (tree_view);
2921           return TRUE;
2922         }
2923
2924       /* Get the path and the node */
2925       path = _gtk_tree_view_find_path (tree_view, tree, node);
2926       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2927
2928       if (!path_is_selectable)
2929         {
2930           gtk_tree_path_free (path);
2931           grab_focus_and_unset_draw_keyfocus (tree_view);
2932           return TRUE;
2933         }
2934
2935       depth = gtk_tree_path_get_depth (path);
2936       background_area.y = y_offset + event->y;
2937       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2938       background_area.x = 0;
2939
2940
2941       /* Let the column have a chance at selecting it. */
2942       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2943       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2944            list; list = (rtl ? list->prev : list->next))
2945         {
2946           GtkTreeViewColumn *candidate = list->data;
2947
2948           if (!gtk_tree_view_column_get_visible (candidate))
2949             continue;
2950
2951           background_area.width = gtk_tree_view_column_get_width (candidate);
2952           if ((background_area.x > (gint) event->x) ||
2953               (background_area.x + background_area.width <= (gint) event->x))
2954             {
2955               background_area.x += background_area.width;
2956               continue;
2957             }
2958
2959           /* we found the focus column */
2960           column = candidate;
2961           cell_area = background_area;
2962           cell_area.width -= horizontal_separator;
2963           cell_area.height -= vertical_separator;
2964           cell_area.x += horizontal_separator/2;
2965           cell_area.y += vertical_separator/2;
2966           if (gtk_tree_view_is_expander_column (tree_view, column))
2967             {
2968               if (!rtl)
2969                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2970               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2971
2972               if (gtk_tree_view_draw_expanders (tree_view))
2973                 {
2974                   if (!rtl)
2975                     cell_area.x += depth * tree_view->priv->expander_size;
2976                   cell_area.width -= depth * tree_view->priv->expander_size;
2977                 }
2978             }
2979           break;
2980         }
2981
2982       if (column == NULL)
2983         {
2984           gtk_tree_path_free (path);
2985           grab_focus_and_unset_draw_keyfocus (tree_view);
2986           return FALSE;
2987         }
2988
2989       tree_view->priv->focus_column = column;
2990
2991       /* decide if we edit */
2992       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2993           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2994         {
2995           GtkTreePath *anchor;
2996           GtkTreeIter iter;
2997
2998           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2999           gtk_tree_view_column_cell_set_cell_data (column,
3000                                                    tree_view->priv->model,
3001                                                    &iter,
3002                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3003                                                    node->children?TRUE:FALSE);
3004
3005           if (tree_view->priv->anchor)
3006             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3007           else
3008             anchor = NULL;
3009
3010           if ((anchor && !gtk_tree_path_compare (anchor, path))
3011               || !_gtk_tree_view_column_has_editable_cell (column))
3012             {
3013               GtkCellEditable *cell_editable = NULL;
3014
3015               /* FIXME: get the right flags */
3016               guint flags = 0;
3017
3018               if (_gtk_tree_view_column_cell_event (column,
3019                                                     (GdkEvent *)event,
3020                                                     &cell_area, flags))
3021                 {
3022                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3023                   cell_editable = gtk_cell_area_get_edit_widget (area);
3024
3025                   if (cell_editable != NULL)
3026                     {
3027                       gtk_tree_path_free (path);
3028                       gtk_tree_path_free (anchor);
3029                       return TRUE;
3030                     }
3031                   column_handled_click = TRUE;
3032                 }
3033             }
3034           if (anchor)
3035             gtk_tree_path_free (anchor);
3036         }
3037
3038       /* select */
3039       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3040       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3041
3042       /* we only handle selection modifications on the first button press
3043        */
3044       if (event->type == GDK_BUTTON_PRESS)
3045         {
3046           GtkCellRenderer *focus_cell;
3047
3048           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3049             tree_view->priv->ctrl_pressed = TRUE;
3050           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
3051             tree_view->priv->shift_pressed = TRUE;
3052
3053           /* We update the focus cell here, this is also needed if the
3054            * column does not contain an editable cell.  In this case,
3055            * GtkCellArea did not receive the event for processing (and
3056            * could not update the focus cell).
3057            */
3058           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3059                                                               &cell_area,
3060                                                               &background_area,
3061                                                               event->x,
3062                                                               event->y);
3063
3064           if (focus_cell)
3065             gtk_tree_view_column_focus_cell (column, focus_cell);
3066
3067           if (event->state & GDK_CONTROL_MASK)
3068             {
3069               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3070               gtk_tree_view_real_toggle_cursor_row (tree_view);
3071             }
3072           else if (event->state & GDK_SHIFT_MASK)
3073             {
3074               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3075               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3076             }
3077           else
3078             {
3079               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
3080             }
3081
3082           tree_view->priv->ctrl_pressed = FALSE;
3083           tree_view->priv->shift_pressed = FALSE;
3084         }
3085
3086       /* the treeview may have been scrolled because of _set_cursor,
3087        * correct here
3088        */
3089
3090       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3091       dval = pre_val - aft_val;
3092
3093       cell_area.y += dval;
3094       background_area.y += dval;
3095
3096       /* Save press to possibly begin a drag
3097        */
3098       if (!column_handled_click &&
3099           !tree_view->priv->in_grab &&
3100           tree_view->priv->pressed_button < 0)
3101         {
3102           tree_view->priv->pressed_button = event->button;
3103           tree_view->priv->press_start_x = event->x;
3104           tree_view->priv->press_start_y = event->y;
3105
3106           if (tree_view->priv->rubber_banding_enable
3107               && !node_selected
3108               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3109             {
3110               tree_view->priv->press_start_y += tree_view->priv->dy;
3111               tree_view->priv->rubber_band_x = event->x;
3112               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3113               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3114
3115               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3116                 tree_view->priv->rubber_band_ctrl = TRUE;
3117               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
3118                 tree_view->priv->rubber_band_shift = TRUE;
3119             }
3120         }
3121
3122       /* Test if a double click happened on the same row. */
3123       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3124         {
3125           int double_click_time, double_click_distance;
3126
3127           g_object_get (gtk_settings_get_default (),
3128                         "gtk-double-click-time", &double_click_time,
3129                         "gtk-double-click-distance", &double_click_distance,
3130                         NULL);
3131
3132           /* Same conditions as _gdk_event_button_generate */
3133           if (tree_view->priv->last_button_x != -1 &&
3134               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3135               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3136               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3137             {
3138               /* We do no longer compare paths of this row and the
3139                * row clicked previously.  We use the double click
3140                * distance to decide whether this is a valid click,
3141                * allowing the mouse to slightly move over another row.
3142                */
3143               row_double_click = TRUE;
3144
3145               tree_view->priv->last_button_time = 0;
3146               tree_view->priv->last_button_x = -1;
3147               tree_view->priv->last_button_y = -1;
3148             }
3149           else
3150             {
3151               tree_view->priv->last_button_time = event->time;
3152               tree_view->priv->last_button_x = event->x;
3153               tree_view->priv->last_button_y = event->y;
3154             }
3155         }
3156
3157       if (row_double_click)
3158         {
3159           gtk_grab_remove (widget);
3160           gtk_tree_view_row_activated (tree_view, path, column);
3161
3162           if (tree_view->priv->pressed_button == event->button)
3163             tree_view->priv->pressed_button = -1;
3164         }
3165
3166       gtk_tree_path_free (path);
3167
3168       /* If we activated the row through a double click we don't want to grab
3169        * focus back, as moving focus to another widget is pretty common.
3170        */
3171       if (!row_double_click)
3172         grab_focus_and_unset_draw_keyfocus (tree_view);
3173
3174       return TRUE;
3175     }
3176
3177   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3178    */
3179   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3180     {
3181       column = list->data;
3182       if (event->window == _gtk_tree_view_column_get_window (column) &&
3183           gtk_tree_view_column_get_resizable (column) &&
3184           _gtk_tree_view_column_get_window (column))
3185         {
3186           gpointer drag_data;
3187
3188           if (event->type == GDK_2BUTTON_PRESS &&
3189               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3190             {
3191               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3192               _gtk_tree_view_column_autosize (tree_view, column);
3193               return TRUE;
3194             }
3195
3196           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3197                                _gtk_tree_view_column_get_window (column),
3198                                GDK_OWNERSHIP_NONE,
3199                                FALSE,
3200                                GDK_POINTER_MOTION_HINT_MASK
3201                                 | GDK_BUTTON1_MOTION_MASK
3202                                 | GDK_BUTTON_RELEASE_MASK,
3203                                NULL,
3204                                event->time) != GDK_GRAB_SUCCESS)
3205             return FALSE;
3206
3207           gtk_grab_add (widget);
3208           tree_view->priv->in_column_resize = TRUE;
3209
3210           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3211                                                    tree_view->priv->last_extra_space_per_column);
3212
3213           /* block attached dnd signal handler */
3214           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3215           if (drag_data)
3216             g_signal_handlers_block_matched (widget,
3217                                              G_SIGNAL_MATCH_DATA,
3218                                              0, 0, NULL, NULL,
3219                                              drag_data);
3220
3221           tree_view->priv->drag_pos = i;
3222           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3223
3224           if (!gtk_widget_has_focus (widget))
3225             gtk_widget_grab_focus (widget);
3226
3227           return TRUE;
3228         }
3229     }
3230   return FALSE;
3231 }
3232
3233 /* GtkWidget::button_release_event helper */
3234 static gboolean
3235 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3236                                           GdkEventButton *event)
3237 {
3238   GtkTreeView *tree_view;
3239   GtkWidget *button;
3240   GList *l;
3241   gboolean rtl;
3242   GdkDevice *device, *other;
3243
3244   tree_view = GTK_TREE_VIEW (widget);
3245
3246   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3247   device = gdk_event_get_device ((GdkEvent*)event);
3248   other = gdk_device_get_associated_device (device);
3249   gdk_device_ungrab (device, event->time);
3250   gdk_device_ungrab (other, event->time);
3251
3252   /* Move the button back */
3253   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3254   g_object_ref (button);
3255   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3256   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3257   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3258   g_object_unref (button);
3259   gtk_widget_queue_resize (widget);
3260   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3261     {
3262       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3263       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3264     }
3265   else
3266     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3267
3268   gtk_widget_grab_focus (button);
3269
3270   if (rtl)
3271     {
3272       if (tree_view->priv->cur_reorder &&
3273           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3274         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3275                                          tree_view->priv->cur_reorder->right_column);
3276     }
3277   else
3278     {
3279       if (tree_view->priv->cur_reorder &&
3280           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3281         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3282                                          tree_view->priv->cur_reorder->left_column);
3283     }
3284   tree_view->priv->drag_column = NULL;
3285   gdk_window_hide (tree_view->priv->drag_window);
3286
3287   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3288     g_slice_free (GtkTreeViewColumnReorder, l->data);
3289   g_list_free (tree_view->priv->column_drag_info);
3290   tree_view->priv->column_drag_info = NULL;
3291   tree_view->priv->cur_reorder = NULL;
3292
3293   if (tree_view->priv->drag_highlight_window)
3294     gdk_window_hide (tree_view->priv->drag_highlight_window);
3295
3296   /* Reset our flags */
3297   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3298   tree_view->priv->in_column_drag = FALSE;
3299
3300   return TRUE;
3301 }
3302
3303 /* GtkWidget::button_release_event helper */
3304 static gboolean
3305 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3306                                             GdkEventButton *event)
3307 {
3308   GtkTreeView *tree_view;
3309   gpointer drag_data;
3310
3311   tree_view = GTK_TREE_VIEW (widget);
3312
3313   tree_view->priv->drag_pos = -1;
3314
3315   /* unblock attached dnd signal handler */
3316   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3317   if (drag_data)
3318     g_signal_handlers_unblock_matched (widget,
3319                                        G_SIGNAL_MATCH_DATA,
3320                                        0, 0, NULL, NULL,
3321                                        drag_data);
3322
3323   tree_view->priv->in_column_resize = FALSE;
3324   gtk_grab_remove (widget);
3325   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3326   return TRUE;
3327 }
3328
3329 static gboolean
3330 gtk_tree_view_button_release (GtkWidget      *widget,
3331                               GdkEventButton *event)
3332 {
3333   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3334
3335   if (tree_view->priv->in_column_drag)
3336     return gtk_tree_view_button_release_drag_column (widget, event);
3337
3338   if (tree_view->priv->rubber_band_status)
3339     gtk_tree_view_stop_rubber_band (tree_view);
3340
3341   if (tree_view->priv->pressed_button == event->button)
3342     tree_view->priv->pressed_button = -1;
3343
3344   if (tree_view->priv->in_column_resize)
3345     return gtk_tree_view_button_release_column_resize (widget, event);
3346
3347   if (tree_view->priv->button_pressed_node == NULL)
3348     return FALSE;
3349
3350   if (event->button == 1)
3351     {
3352       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3353           tree_view->priv->arrow_prelit)
3354         {
3355           GtkTreePath *path = NULL;
3356
3357           path = _gtk_tree_view_find_path (tree_view,
3358                                            tree_view->priv->button_pressed_tree,
3359                                            tree_view->priv->button_pressed_node);
3360           /* Actually activate the node */
3361           if (tree_view->priv->button_pressed_node->children == NULL)
3362             gtk_tree_view_real_expand_row (tree_view, path,
3363                                            tree_view->priv->button_pressed_tree,
3364                                            tree_view->priv->button_pressed_node,
3365                                            FALSE, TRUE);
3366           else
3367             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3368                                              tree_view->priv->button_pressed_tree,
3369                                              tree_view->priv->button_pressed_node, TRUE);
3370           gtk_tree_path_free (path);
3371         }
3372
3373       gtk_grab_remove (widget);
3374       tree_view->priv->button_pressed_tree = NULL;
3375       tree_view->priv->button_pressed_node = NULL;
3376     }
3377
3378   return TRUE;
3379 }
3380
3381 static gboolean
3382 gtk_tree_view_grab_broken (GtkWidget          *widget,
3383                            GdkEventGrabBroken *event)
3384 {
3385   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3386
3387   if (tree_view->priv->in_column_drag)
3388     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3389
3390   if (tree_view->priv->in_column_resize)
3391     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3392
3393   return TRUE;
3394 }
3395
3396 #if 0
3397 static gboolean
3398 gtk_tree_view_configure (GtkWidget *widget,
3399                          GdkEventConfigure *event)
3400 {
3401   GtkTreeView *tree_view;
3402
3403   tree_view = GTK_TREE_VIEW (widget);
3404   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3405
3406   return FALSE;
3407 }
3408 #endif
3409
3410 /* GtkWidget::motion_event function set.
3411  */
3412
3413 static gboolean
3414 coords_are_over_arrow (GtkTreeView *tree_view,
3415                        GtkRBTree   *tree,
3416                        GtkRBNode   *node,
3417                        /* these are in bin window coords */
3418                        gint         x,
3419                        gint         y)
3420 {
3421   GdkRectangle arrow;
3422   gint x2;
3423
3424   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3425     return FALSE;
3426
3427   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3428     return FALSE;
3429
3430   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3431   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3432
3433   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3434
3435   arrow.width = x2 - arrow.x;
3436
3437   return (x >= arrow.x &&
3438           x < (arrow.x + arrow.width) &&
3439           y >= arrow.y &&
3440           y < (arrow.y + arrow.height));
3441 }
3442
3443 static gboolean
3444 auto_expand_timeout (gpointer data)
3445 {
3446   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3447   GtkTreePath *path;
3448
3449   if (tree_view->priv->prelight_node)
3450     {
3451       path = _gtk_tree_view_find_path (tree_view,
3452                                        tree_view->priv->prelight_tree,
3453                                        tree_view->priv->prelight_node);
3454
3455       if (tree_view->priv->prelight_node->children)
3456         gtk_tree_view_collapse_row (tree_view, path);
3457       else
3458         gtk_tree_view_expand_row (tree_view, path, FALSE);
3459
3460       gtk_tree_path_free (path);
3461     }
3462
3463   tree_view->priv->auto_expand_timeout = 0;
3464
3465   return FALSE;
3466 }
3467
3468 static void
3469 remove_auto_expand_timeout (GtkTreeView *tree_view)
3470 {
3471   if (tree_view->priv->auto_expand_timeout != 0)
3472     {
3473       g_source_remove (tree_view->priv->auto_expand_timeout);
3474       tree_view->priv->auto_expand_timeout = 0;
3475     }
3476 }
3477
3478 static void
3479 do_prelight (GtkTreeView *tree_view,
3480              GtkRBTree   *tree,
3481              GtkRBNode   *node,
3482              /* these are in bin_window coords */
3483              gint         x,
3484              gint         y)
3485 {
3486   if (tree_view->priv->prelight_tree == tree &&
3487       tree_view->priv->prelight_node == node)
3488     {
3489       /*  We are still on the same node,
3490           but we might need to take care of the arrow  */
3491
3492       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3493         {
3494           gboolean over_arrow;
3495
3496           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3497
3498           if (over_arrow != tree_view->priv->arrow_prelit)
3499             {
3500               if (over_arrow)
3501                 tree_view->priv->arrow_prelit = TRUE;
3502               else
3503                 tree_view->priv->arrow_prelit = FALSE;
3504
3505               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3506             }
3507         }
3508
3509       return;
3510     }
3511
3512   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3513     {
3514       /*  Unprelight the old node and arrow  */
3515
3516       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3517                              GTK_RBNODE_IS_PRELIT);
3518
3519       if (tree_view->priv->arrow_prelit
3520           && gtk_tree_view_draw_expanders (tree_view))
3521         {
3522           tree_view->priv->arrow_prelit = FALSE;
3523
3524           gtk_tree_view_queue_draw_arrow (tree_view,
3525                                           tree_view->priv->prelight_tree,
3526                                           tree_view->priv->prelight_node);
3527         }
3528
3529       _gtk_tree_view_queue_draw_node (tree_view,
3530                                       tree_view->priv->prelight_tree,
3531                                       tree_view->priv->prelight_node,
3532                                       NULL);
3533     }
3534
3535
3536   if (tree_view->priv->hover_expand)
3537     remove_auto_expand_timeout (tree_view);
3538
3539   /*  Set the new prelight values  */
3540   tree_view->priv->prelight_node = node;
3541   tree_view->priv->prelight_tree = tree;
3542
3543   if (!node || !tree)
3544     return;
3545
3546   /*  Prelight the new node and arrow  */
3547
3548   if (gtk_tree_view_draw_expanders (tree_view)
3549       && coords_are_over_arrow (tree_view, tree, node, x, y))
3550     {
3551       tree_view->priv->arrow_prelit = TRUE;
3552
3553       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3554     }
3555
3556   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3557
3558   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3559
3560   if (tree_view->priv->hover_expand)
3561     {
3562       tree_view->priv->auto_expand_timeout =
3563         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3564     }
3565 }
3566
3567 static void
3568 prelight_or_select (GtkTreeView *tree_view,
3569                     GtkRBTree   *tree,
3570                     GtkRBNode   *node,
3571                     /* these are in bin_window coords */
3572                     gint         x,
3573                     gint         y)
3574 {
3575   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3576
3577   if (tree_view->priv->hover_selection &&
3578       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3579       !(tree_view->priv->edited_column &&
3580         gtk_cell_area_get_edit_widget
3581         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3582     {
3583       if (node)
3584         {
3585           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3586             {
3587               GtkTreePath *path;
3588
3589               path = _gtk_tree_view_find_path (tree_view, tree, node);
3590               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3591               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3592                 {
3593                   tree_view->priv->draw_keyfocus = FALSE;
3594                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3595                 }
3596               gtk_tree_path_free (path);
3597             }
3598         }
3599
3600       else if (mode == GTK_SELECTION_SINGLE)
3601         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3602     }
3603
3604     do_prelight (tree_view, tree, node, x, y);
3605 }
3606
3607 static void
3608 ensure_unprelighted (GtkTreeView *tree_view)
3609 {
3610   do_prelight (tree_view,
3611                NULL, NULL,
3612                -1000, -1000); /* coords not possibly over an arrow */
3613
3614   g_assert (tree_view->priv->prelight_node == NULL);
3615 }
3616
3617 static void
3618 update_prelight (GtkTreeView *tree_view,
3619                  gint         x,
3620                  gint         y)
3621 {
3622   int new_y;
3623   GtkRBTree *tree;
3624   GtkRBNode *node;
3625
3626   if (tree_view->priv->tree == NULL)
3627     return;
3628
3629   if (x == -10000)
3630     {
3631       ensure_unprelighted (tree_view);
3632       return;
3633     }
3634
3635   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3636   if (new_y < 0)
3637     new_y = 0;
3638
3639   _gtk_rbtree_find_offset (tree_view->priv->tree,
3640                            new_y, &tree, &node);
3641
3642   if (node)
3643     prelight_or_select (tree_view, tree, node, x, y);
3644 }
3645
3646
3647
3648
3649 /* Our motion arrow is either a box (in the case of the original spot)
3650  * or an arrow.  It is expander_size wide.
3651  */
3652 /*
3653  * 11111111111111
3654  * 01111111111110
3655  * 00111111111100
3656  * 00011111111000
3657  * 00001111110000
3658  * 00000111100000
3659  * 00000111100000
3660  * 00000111100000
3661  * ~ ~ ~ ~ ~ ~ ~
3662  * 00000111100000
3663  * 00000111100000
3664  * 00000111100000
3665  * 00001111110000
3666  * 00011111111000
3667  * 00111111111100
3668  * 01111111111110
3669  * 11111111111111
3670  */
3671
3672 static void
3673 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3674 {
3675   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3676   GtkWidget *widget = GTK_WIDGET (tree_view);
3677   cairo_surface_t *mask_image;
3678   cairo_region_t *mask_region;
3679   gint x;
3680   gint y;
3681   gint width;
3682   gint height;
3683   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3684   GdkWindowAttr attributes;
3685   guint attributes_mask;
3686   cairo_t *cr;
3687
3688   if (!reorder ||
3689       reorder->left_column == tree_view->priv->drag_column ||
3690       reorder->right_column == tree_view->priv->drag_column)
3691     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3692   else if (reorder->left_column || reorder->right_column)
3693     {
3694       GtkAllocation left_allocation, right_allocation;
3695       GdkRectangle visible_rect;
3696       GtkWidget *button;
3697
3698       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3699       if (reorder->left_column)
3700         {
3701           button = gtk_tree_view_column_get_button (reorder->left_column);
3702           gtk_widget_get_allocation (button, &left_allocation);
3703           x = left_allocation.x + left_allocation.width;
3704         }
3705       else
3706         {
3707           button = gtk_tree_view_column_get_button (reorder->right_column);
3708           gtk_widget_get_allocation (button, &right_allocation);
3709           x = right_allocation.x;
3710         }
3711
3712       if (x < visible_rect.x)
3713         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3714       else if (x > visible_rect.x + visible_rect.width)
3715         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3716       else
3717         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3718     }
3719
3720   /* We want to draw the rectangle over the initial location. */
3721   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3722     {
3723       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3724         {
3725           GtkAllocation drag_allocation;
3726           GtkWidget    *button;
3727
3728           if (tree_view->priv->drag_highlight_window)
3729             {
3730               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3731                                         NULL);
3732               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3733             }
3734
3735           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3736           attributes.window_type = GDK_WINDOW_CHILD;
3737           attributes.wclass = GDK_INPUT_OUTPUT;
3738           attributes.x = tree_view->priv->drag_column_x;
3739           attributes.y = 0;
3740           gtk_widget_get_allocation (button, &drag_allocation);
3741           width = attributes.width = drag_allocation.width;
3742           height = attributes.height = drag_allocation.height;
3743           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3744           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3745           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3746           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3747           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3748
3749           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3750           cr = cairo_create (mask_image);
3751
3752           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3753           cairo_stroke (cr);
3754           cairo_destroy (cr);
3755
3756           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3757           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3758                                            mask_region, 0, 0);
3759
3760           cairo_region_destroy (mask_region);
3761           cairo_surface_destroy (mask_image);
3762
3763           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3764         }
3765     }
3766   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3767     {
3768       GtkAllocation button_allocation;
3769       GtkWidget    *button;
3770
3771       width = tree_view->priv->expander_size;
3772
3773       /* Get x, y, width, height of arrow */
3774       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3775       if (reorder->left_column)
3776         {
3777           button = gtk_tree_view_column_get_button (reorder->left_column);
3778           gtk_widget_get_allocation (button, &button_allocation);
3779           x += button_allocation.x + button_allocation.width - width/2;
3780           height = button_allocation.height;
3781         }
3782       else
3783         {
3784           button = gtk_tree_view_column_get_button (reorder->right_column);
3785           gtk_widget_get_allocation (button, &button_allocation);
3786           x += button_allocation.x - width/2;
3787           height = button_allocation.height;
3788         }
3789       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3790       height += tree_view->priv->expander_size;
3791
3792       /* Create the new window */
3793       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3794         {
3795           if (tree_view->priv->drag_highlight_window)
3796             {
3797               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3798                                         NULL);
3799               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3800             }
3801
3802           attributes.window_type = GDK_WINDOW_TEMP;
3803           attributes.wclass = GDK_INPUT_OUTPUT;
3804           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3805           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3806           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3807           attributes.x = x;
3808           attributes.y = y;
3809           attributes.width = width;
3810           attributes.height = height;
3811           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3812                                                                    &attributes, attributes_mask);
3813           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3814
3815           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3816
3817           cr = cairo_create (mask_image);
3818           cairo_move_to (cr, 0, 0);
3819           cairo_line_to (cr, width, 0);
3820           cairo_line_to (cr, width / 2., width / 2);
3821           cairo_move_to (cr, 0, height);
3822           cairo_line_to (cr, width, height);
3823           cairo_line_to (cr, width / 2., height - width / 2.);
3824           cairo_fill (cr);
3825           cairo_destroy (cr);
3826
3827           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3828           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3829                                            mask_region, 0, 0);
3830
3831           cairo_region_destroy (mask_region);
3832           cairo_surface_destroy (mask_image);
3833         }
3834
3835       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3836       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3837     }
3838   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3839            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3840     {
3841       GtkAllocation allocation;
3842       GtkWidget    *button;
3843
3844       width = tree_view->priv->expander_size;
3845
3846       /* Get x, y, width, height of arrow */
3847       width = width/2; /* remember, the arrow only takes half the available width */
3848       gdk_window_get_origin (gtk_widget_get_window (widget),
3849                              &x, &y);
3850       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3851         {
3852           gtk_widget_get_allocation (widget, &allocation);
3853           x += allocation.width - width;
3854         }
3855
3856       if (reorder->left_column)
3857         {
3858           button = gtk_tree_view_column_get_button (reorder->left_column);
3859           gtk_widget_get_allocation (button, &allocation);
3860           height = allocation.height;
3861         }
3862       else
3863         {
3864           button = gtk_tree_view_column_get_button (reorder->right_column);
3865           gtk_widget_get_allocation (button, &allocation);
3866           height = allocation.height;
3867         }
3868
3869       y -= tree_view->priv->expander_size;
3870       height += 2*tree_view->priv->expander_size;
3871
3872       /* Create the new window */
3873       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3874           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3875         {
3876           if (tree_view->priv->drag_highlight_window)
3877             {
3878               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3879                                         NULL);
3880               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3881             }
3882
3883           attributes.window_type = GDK_WINDOW_TEMP;
3884           attributes.wclass = GDK_INPUT_OUTPUT;
3885           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3886           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3887           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3888           attributes.x = x;
3889           attributes.y = y;
3890           attributes.width = width;
3891           attributes.height = height;
3892           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3893           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3894
3895           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3896
3897           cr = cairo_create (mask_image);
3898           /* mirror if we're on the left */
3899           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3900             {
3901               cairo_translate (cr, width, 0);
3902               cairo_scale (cr, -1, 1);
3903             }
3904           cairo_move_to (cr, 0, 0);
3905           cairo_line_to (cr, width, width);
3906           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3907           cairo_move_to (cr, 0, height);
3908           cairo_line_to (cr, width, height - width);
3909           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3910           cairo_fill (cr);
3911           cairo_destroy (cr);
3912
3913           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3914           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3915                                            mask_region, 0, 0);
3916
3917           cairo_region_destroy (mask_region);
3918           cairo_surface_destroy (mask_image);
3919         }
3920
3921       tree_view->priv->drag_column_window_state = arrow_type;
3922       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3923    }
3924   else
3925     {
3926       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3927       gdk_window_hide (tree_view->priv->drag_highlight_window);
3928       return;
3929     }
3930
3931   gdk_window_show (tree_view->priv->drag_highlight_window);
3932   gdk_window_raise (tree_view->priv->drag_highlight_window);
3933 }
3934
3935 static gboolean
3936 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3937                                     GdkEventMotion *event)
3938 {
3939   gint x;
3940   gint new_width;
3941   GtkTreeViewColumn *column;
3942   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3943
3944   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3945
3946   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3947     gtk_widget_get_pointer (widget, &x, NULL);
3948   else
3949     x = event->x;
3950
3951   if (tree_view->priv->hadjustment)
3952     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3953
3954   new_width = gtk_tree_view_new_column_width (tree_view,
3955                                               tree_view->priv->drag_pos, &x);
3956   if (x != tree_view->priv->x_drag &&
3957       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3958     {
3959       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3960
3961       if (gtk_tree_view_column_get_expand (column))
3962         new_width -= tree_view->priv->last_extra_space_per_column;
3963
3964       _gtk_tree_view_column_set_resized_width (column, new_width);
3965
3966
3967       gtk_widget_queue_resize (widget);
3968     }
3969
3970   return FALSE;
3971 }
3972
3973
3974 static void
3975 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3976 {
3977   GtkTreeViewColumnReorder *reorder = NULL;
3978   GList *list;
3979   gint mouse_x;
3980
3981   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3982   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3983     {
3984       reorder = (GtkTreeViewColumnReorder *) list->data;
3985       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3986         break;
3987       reorder = NULL;
3988     }
3989
3990   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3991       return;*/
3992
3993   tree_view->priv->cur_reorder = reorder;
3994   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3995 }
3996
3997 static void
3998 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3999 {
4000   GdkRectangle visible_rect;
4001   gint y;
4002   gint offset;
4003
4004   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
4005   y += tree_view->priv->dy;
4006
4007   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4008
4009   /* see if we are near the edge. */
4010   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4011   if (offset > 0)
4012     {
4013       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4014       if (offset < 0)
4015         return;
4016     }
4017
4018   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4019                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4020 }
4021
4022 static gboolean
4023 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
4024 {
4025   GdkRectangle visible_rect;
4026   gint x;
4027   gint offset;
4028
4029   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
4030
4031   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4032
4033   /* See if we are near the edge. */
4034   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4035   if (offset > 0)
4036     {
4037       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4038       if (offset < 0)
4039         return TRUE;
4040     }
4041   offset = offset/3;
4042
4043   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4044                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4045
4046   return TRUE;
4047
4048 }
4049
4050 static gboolean
4051 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4052                                   GdkEventMotion *event)
4053 {
4054   GtkAllocation allocation, button_allocation;
4055   GtkTreeView *tree_view = (GtkTreeView *) widget;
4056   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4057   GtkWidget *button;
4058   gint x, y;
4059
4060   /* Sanity Check */
4061   if ((column == NULL) ||
4062       (event->window != tree_view->priv->drag_window))
4063     return FALSE;
4064
4065   button = gtk_tree_view_column_get_button (column);
4066
4067   /* Handle moving the header */
4068   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4069   gtk_widget_get_allocation (widget, &allocation);
4070   gtk_widget_get_allocation (button, &button_allocation);
4071   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4072              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4073   gdk_window_move (tree_view->priv->drag_window, x, y);
4074
4075   /* autoscroll, if needed */
4076   gtk_tree_view_horizontal_autoscroll (tree_view);
4077   /* Update the current reorder position and arrow; */
4078   gtk_tree_view_update_current_reorder (tree_view);
4079
4080   return TRUE;
4081 }
4082
4083 static void
4084 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4085 {
4086   remove_scroll_timeout (tree_view);
4087   gtk_grab_remove (GTK_WIDGET (tree_view));
4088
4089   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4090     {
4091       GtkTreePath *tmp_path;
4092
4093       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4094
4095       /* The anchor path should be set to the start path */
4096       tmp_path = _gtk_tree_view_find_path (tree_view,
4097                                            tree_view->priv->rubber_band_start_tree,
4098                                            tree_view->priv->rubber_band_start_node);
4099
4100       if (tree_view->priv->anchor)
4101         gtk_tree_row_reference_free (tree_view->priv->anchor);
4102
4103       tree_view->priv->anchor =
4104         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4105                                           tree_view->priv->model,
4106                                           tmp_path);
4107
4108       gtk_tree_path_free (tmp_path);
4109
4110       /* ... and the cursor to the end path */
4111       tmp_path = _gtk_tree_view_find_path (tree_view,
4112                                            tree_view->priv->rubber_band_end_tree,
4113                                            tree_view->priv->rubber_band_end_node);
4114       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
4115       gtk_tree_path_free (tmp_path);
4116
4117       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4118     }
4119
4120   /* Clear status variables */
4121   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4122   tree_view->priv->rubber_band_shift = 0;
4123   tree_view->priv->rubber_band_ctrl = 0;
4124
4125   tree_view->priv->rubber_band_start_node = NULL;
4126   tree_view->priv->rubber_band_start_tree = NULL;
4127   tree_view->priv->rubber_band_end_node = NULL;
4128   tree_view->priv->rubber_band_end_tree = NULL;
4129 }
4130
4131 static void
4132 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4133                                                  GtkRBTree   *start_tree,
4134                                                  GtkRBNode   *start_node,
4135                                                  GtkRBTree   *end_tree,
4136                                                  GtkRBNode   *end_node,
4137                                                  gboolean     select,
4138                                                  gboolean     skip_start,
4139                                                  gboolean     skip_end)
4140 {
4141   if (start_node == end_node)
4142     return;
4143
4144   /* We skip the first node and jump inside the loop */
4145   if (skip_start)
4146     goto skip_first;
4147
4148   do
4149     {
4150       /* Small optimization by assuming insensitive nodes are never
4151        * selected.
4152        */
4153       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4154         {
4155           GtkTreePath *path;
4156           gboolean selectable;
4157
4158           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
4159           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4160           gtk_tree_path_free (path);
4161
4162           if (!selectable)
4163             goto node_not_selectable;
4164         }
4165
4166       if (select)
4167         {
4168           if (tree_view->priv->rubber_band_shift)
4169             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4170           else if (tree_view->priv->rubber_band_ctrl)
4171             {
4172               /* Toggle the selection state */
4173               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4174                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4175               else
4176                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4177             }
4178           else
4179             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4180         }
4181       else
4182         {
4183           /* Mirror the above */
4184           if (tree_view->priv->rubber_band_shift)
4185             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4186           else if (tree_view->priv->rubber_band_ctrl)
4187             {
4188               /* Toggle the selection state */
4189               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4190                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4191               else
4192                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4193             }
4194           else
4195             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4196         }
4197
4198       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4199
4200 node_not_selectable:
4201       if (start_node == end_node)
4202         break;
4203
4204 skip_first:
4205
4206       if (start_node->children)
4207         {
4208           start_tree = start_node->children;
4209           start_node = start_tree->root;
4210           while (start_node->left != start_tree->nil)
4211             start_node = start_node->left;
4212         }
4213       else
4214         {
4215           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4216
4217           if (!start_tree)
4218             /* Ran out of tree */
4219             break;
4220         }
4221
4222       if (skip_end && start_node == end_node)
4223         break;
4224     }
4225   while (TRUE);
4226 }
4227
4228 static void
4229 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4230 {
4231   GtkRBTree *start_tree, *end_tree;
4232   GtkRBNode *start_node, *end_node;
4233
4234   _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);
4235   _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);
4236
4237   /* Handle the start area first */
4238   if (!tree_view->priv->rubber_band_start_node)
4239     {
4240       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4241                                                        start_tree,
4242                                                        start_node,
4243                                                        end_tree,
4244                                                        end_node,
4245                                                        TRUE,
4246                                                        FALSE,
4247                                                        FALSE);
4248     }
4249   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4250            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4251     {
4252       /* New node is above the old one; selection became bigger */
4253       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4254                                                        start_tree,
4255                                                        start_node,
4256                                                        tree_view->priv->rubber_band_start_tree,
4257                                                        tree_view->priv->rubber_band_start_node,
4258                                                        TRUE,
4259                                                        FALSE,
4260                                                        TRUE);
4261     }
4262   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4263            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4264     {
4265       /* New node is below the old one; selection became smaller */
4266       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4267                                                        tree_view->priv->rubber_band_start_tree,
4268                                                        tree_view->priv->rubber_band_start_node,
4269                                                        start_tree,
4270                                                        start_node,
4271                                                        FALSE,
4272                                                        FALSE,
4273                                                        TRUE);
4274     }
4275
4276   tree_view->priv->rubber_band_start_tree = start_tree;
4277   tree_view->priv->rubber_band_start_node = start_node;
4278
4279   /* Next, handle the end area */
4280   if (!tree_view->priv->rubber_band_end_node)
4281     {
4282       /* In the event this happens, start_node was also NULL; this case is
4283        * handled above.
4284        */
4285     }
4286   else if (!end_node)
4287     {
4288       /* Find the last node in the tree */
4289       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4290                                &end_tree, &end_node);
4291
4292       /* Selection reached end of the tree */
4293       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4294                                                        tree_view->priv->rubber_band_end_tree,
4295                                                        tree_view->priv->rubber_band_end_node,
4296                                                        end_tree,
4297                                                        end_node,
4298                                                        TRUE,
4299                                                        TRUE,
4300                                                        FALSE);
4301     }
4302   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4303            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4304     {
4305       /* New node is below the old one; selection became bigger */
4306       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4307                                                        tree_view->priv->rubber_band_end_tree,
4308                                                        tree_view->priv->rubber_band_end_node,
4309                                                        end_tree,
4310                                                        end_node,
4311                                                        TRUE,
4312                                                        TRUE,
4313                                                        FALSE);
4314     }
4315   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4316            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4317     {
4318       /* New node is above the old one; selection became smaller */
4319       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4320                                                        end_tree,
4321                                                        end_node,
4322                                                        tree_view->priv->rubber_band_end_tree,
4323                                                        tree_view->priv->rubber_band_end_node,
4324                                                        FALSE,
4325                                                        TRUE,
4326                                                        FALSE);
4327     }
4328
4329   tree_view->priv->rubber_band_end_tree = end_tree;
4330   tree_view->priv->rubber_band_end_node = end_node;
4331 }
4332
4333 static void
4334 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4335 {
4336   gint x, y;
4337   GdkRectangle old_area;
4338   GdkRectangle new_area;
4339   GdkRectangle common;
4340   cairo_region_t *invalid_region;
4341
4342   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4343   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4344   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4345   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4346
4347   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4348
4349   x = MAX (x, 0);
4350   y = MAX (y, 0) + tree_view->priv->dy;
4351
4352   new_area.x = MIN (tree_view->priv->press_start_x, x);
4353   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4354   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4355   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4356
4357   invalid_region = cairo_region_create_rectangle (&old_area);
4358   cairo_region_union_rectangle (invalid_region, &new_area);
4359
4360   gdk_rectangle_intersect (&old_area, &new_area, &common);
4361   if (common.width > 2 && common.height > 2)
4362     {
4363       cairo_region_t *common_region;
4364
4365       /* make sure the border is invalidated */
4366       common.x += 1;
4367       common.y += 1;
4368       common.width -= 2;
4369       common.height -= 2;
4370
4371       common_region = cairo_region_create_rectangle (&common);
4372
4373       cairo_region_subtract (invalid_region, common_region);
4374       cairo_region_destroy (common_region);
4375     }
4376
4377   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4378
4379   cairo_region_destroy (invalid_region);
4380
4381   tree_view->priv->rubber_band_x = x;
4382   tree_view->priv->rubber_band_y = y;
4383
4384   gtk_tree_view_update_rubber_band_selection (tree_view);
4385 }
4386
4387 static void
4388 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4389                                  cairo_t      *cr)
4390 {
4391   GdkRectangle rect;
4392   GtkStyleContext *context;
4393
4394   cairo_save (cr);
4395
4396   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4397
4398   gtk_style_context_save (context);
4399   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4400
4401   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4402   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4403   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4404   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4405
4406   gdk_cairo_rectangle (cr, &rect);
4407   cairo_clip (cr);
4408
4409   gtk_render_background (context, cr,
4410                          rect.x, rect.y,
4411                          rect.width, rect.height);
4412   gtk_render_frame (context, cr,
4413                     rect.x, rect.y,
4414                     rect.width, rect.height);
4415
4416   gtk_style_context_restore (context);
4417   cairo_restore (cr);
4418 }
4419
4420 static gboolean
4421 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4422                                  GdkEventMotion *event)
4423 {
4424   GtkTreeView *tree_view;
4425   GtkRBTree *tree;
4426   GtkRBNode *node;
4427   gint new_y;
4428
4429   tree_view = (GtkTreeView *) widget;
4430
4431   if (tree_view->priv->tree == NULL)
4432     return FALSE;
4433
4434   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4435     {
4436       gtk_grab_add (GTK_WIDGET (tree_view));
4437       gtk_tree_view_update_rubber_band (tree_view);
4438
4439       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4440     }
4441   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4442     {
4443       gtk_tree_view_update_rubber_band (tree_view);
4444
4445       add_scroll_timeout (tree_view);
4446     }
4447
4448   /* only check for an initiated drag when a button is pressed */
4449   if (tree_view->priv->pressed_button >= 0
4450       && !tree_view->priv->rubber_band_status)
4451     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4452
4453   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4454   if (new_y < 0)
4455     new_y = 0;
4456
4457   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4458
4459   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4460   if ((tree_view->priv->button_pressed_node != NULL) &&
4461       (tree_view->priv->button_pressed_node != node))
4462     node = NULL;
4463
4464   tree_view->priv->event_last_x = event->x;
4465   tree_view->priv->event_last_y = event->y;
4466
4467   prelight_or_select (tree_view, tree, node, event->x, event->y);
4468
4469   return TRUE;
4470 }
4471
4472 static gboolean
4473 gtk_tree_view_motion (GtkWidget      *widget,
4474                       GdkEventMotion *event)
4475 {
4476   GtkTreeView *tree_view;
4477
4478   tree_view = (GtkTreeView *) widget;
4479
4480   /* Resizing a column */
4481   if (tree_view->priv->in_column_resize)
4482     return gtk_tree_view_motion_resize_column (widget, event);
4483
4484   /* Drag column */
4485   if (tree_view->priv->in_column_drag)
4486     return gtk_tree_view_motion_drag_column (widget, event);
4487
4488   /* Sanity check it */
4489   if (event->window == tree_view->priv->bin_window)
4490     return gtk_tree_view_motion_bin_window (widget, event);
4491
4492   return FALSE;
4493 }
4494
4495 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4496  * the tree is empty.
4497  */
4498 static void
4499 invalidate_empty_focus (GtkTreeView *tree_view)
4500 {
4501   GdkRectangle area;
4502
4503   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4504     return;
4505
4506   area.x = 0;
4507   area.y = 0;
4508   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4509   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4510   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4511 }
4512
4513 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4514  * is empty.
4515  */
4516 static void
4517 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4518 {
4519   GtkWidget *widget = GTK_WIDGET (tree_view);
4520   gint w, h;
4521
4522   if (!gtk_widget_has_focus (widget))
4523     return;
4524
4525   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4526   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4527
4528   if (w > 0 && h > 0)
4529     {
4530       GtkStyleContext *context;
4531       GtkStateFlags state;
4532
4533       context = gtk_widget_get_style_context (widget);
4534       state = gtk_widget_get_state_flags (widget);
4535
4536       gtk_style_context_save (context);
4537       gtk_style_context_set_state (context, state);
4538
4539       gtk_render_focus (context, cr, 1, 1, w, h);
4540
4541       gtk_style_context_restore (context);
4542     }
4543 }
4544
4545 typedef enum {
4546   GTK_TREE_VIEW_GRID_LINE,
4547   GTK_TREE_VIEW_TREE_LINE,
4548   GTK_TREE_VIEW_FOREGROUND_LINE
4549 } GtkTreeViewLineType;
4550
4551 static void
4552 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4553                          cairo_t             *cr,
4554                          GtkTreeViewLineType  type,
4555                          int                  x1,
4556                          int                  y1,
4557                          int                  x2,
4558                          int                  y2)
4559 {
4560   cairo_save (cr);
4561
4562   switch (type)
4563     {
4564     case GTK_TREE_VIEW_TREE_LINE:
4565       cairo_set_source_rgb (cr, 0, 0, 0);
4566       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4567       if (tree_view->priv->tree_line_dashes[0])
4568         cairo_set_dash (cr,
4569                         tree_view->priv->tree_line_dashes,
4570                         2, 0.5);
4571       break;
4572     case GTK_TREE_VIEW_GRID_LINE:
4573       cairo_set_source_rgb (cr, 0, 0, 0);
4574       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4575       if (tree_view->priv->grid_line_dashes[0])
4576         cairo_set_dash (cr,
4577                         tree_view->priv->grid_line_dashes,
4578                         2, 0.5);
4579       break;
4580     default:
4581       g_assert_not_reached ();
4582       /* fall through */
4583     case GTK_TREE_VIEW_FOREGROUND_LINE:
4584       {
4585         GtkStyleContext *context;
4586         GtkStateFlags state;
4587         GdkRGBA color;
4588
4589         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4590         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4591
4592         cairo_set_line_width (cr, 1.0);
4593         gtk_style_context_get_color (context, state, &color);
4594         gdk_cairo_set_source_rgba (cr, &color);
4595       }
4596
4597       break;
4598     }
4599
4600   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4601   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4602   cairo_stroke (cr);
4603
4604   cairo_restore (cr);
4605 }
4606
4607 static void
4608 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4609                                cairo_t        *cr,
4610                                gint            n_visible_columns)
4611 {
4612   GList *list = tree_view->priv->columns;
4613   gint i = 0;
4614   gint current_x = 0;
4615
4616   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4617       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4618     return;
4619
4620   /* Only draw the lines for visible rows and columns */
4621   for (list = tree_view->priv->columns; list; list = list->next, i++)
4622     {
4623       GtkTreeViewColumn *column = list->data;
4624
4625       /* We don't want a line for the last column */
4626       if (i == n_visible_columns - 1)
4627         break;
4628
4629       if (!gtk_tree_view_column_get_visible (column))
4630         continue;
4631
4632       current_x += gtk_tree_view_column_get_width (column);
4633
4634       gtk_tree_view_draw_line (tree_view, cr,
4635                                GTK_TREE_VIEW_GRID_LINE,
4636                                current_x - 1, 0,
4637                                current_x - 1, tree_view->priv->height);
4638     }
4639 }
4640
4641 /* Warning: Very scary function.
4642  * Modify at your own risk
4643  *
4644  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4645  * FIXME: It's not...
4646  */
4647 static gboolean
4648 gtk_tree_view_bin_draw (GtkWidget      *widget,
4649                         cairo_t        *cr)
4650 {
4651   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4652   GtkTreePath *path;
4653   GtkRBTree *tree;
4654   GList *list;
4655   GtkRBNode *node;
4656   GtkRBNode *cursor = NULL;
4657   GtkRBTree *cursor_tree = NULL;
4658   GtkRBNode *drag_highlight = NULL;
4659   GtkRBTree *drag_highlight_tree = NULL;
4660   GtkTreeIter iter;
4661   gint new_y;
4662   gint y_offset, cell_offset;
4663   gint max_height;
4664   gint depth;
4665   GdkRectangle background_area;
4666   GdkRectangle cell_area;
4667   GdkRectangle clip;
4668   guint flags;
4669   gint highlight_x;
4670   gint expander_cell_width;
4671   gint bin_window_width;
4672   gint bin_window_height;
4673   GtkTreePath *cursor_path;
4674   GtkTreePath *drag_dest_path;
4675   GList *first_column, *last_column;
4676   gint vertical_separator;
4677   gint horizontal_separator;
4678   gint focus_line_width;
4679   gboolean allow_rules;
4680   gboolean has_can_focus_cell;
4681   gboolean rtl;
4682   gint n_visible_columns;
4683   gint pointer_x, pointer_y;
4684   gint grid_line_width;
4685   gboolean got_pointer = FALSE;
4686   gboolean draw_vgrid_lines, draw_hgrid_lines;
4687   GtkStyleContext *context;
4688   GtkStateFlags state;
4689
4690   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4691   context = gtk_widget_get_style_context (widget);
4692   state = gtk_widget_get_state_flags (widget);
4693
4694   gtk_widget_style_get (widget,
4695                         "horizontal-separator", &horizontal_separator,
4696                         "vertical-separator", &vertical_separator,
4697                         "allow-rules", &allow_rules,
4698                         "focus-line-width", &focus_line_width,
4699                         NULL);
4700
4701   if (tree_view->priv->tree == NULL)
4702     {
4703       draw_empty_focus (tree_view, cr);
4704       return TRUE;
4705     }
4706
4707   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4708   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4709   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4710   cairo_clip (cr);
4711   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4712     return TRUE;
4713
4714   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4715
4716   if (new_y < 0)
4717     new_y = 0;
4718   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4719
4720   if (tree_view->priv->height < bin_window_height)
4721     {
4722       gtk_style_context_save (context);
4723       gtk_style_context_set_state (context, state);
4724       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4725
4726       gtk_render_background (context, cr,
4727                              0, tree_view->priv->height,
4728                              bin_window_width,
4729                              bin_window_height - tree_view->priv->height);
4730
4731       gtk_style_context_restore (context);
4732     }
4733
4734   if (node == NULL)
4735     return TRUE;
4736
4737   /* find the path for the node */
4738   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4739                                    tree,
4740                                    node);
4741   gtk_tree_model_get_iter (tree_view->priv->model,
4742                            &iter,
4743                            path);
4744   depth = gtk_tree_path_get_depth (path);
4745   gtk_tree_path_free (path);
4746
4747   cursor_path = NULL;
4748   drag_dest_path = NULL;
4749
4750   if (tree_view->priv->cursor)
4751     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4752
4753   if (cursor_path)
4754     _gtk_tree_view_find_node (tree_view, cursor_path,
4755                               &cursor_tree, &cursor);
4756
4757   if (tree_view->priv->drag_dest_row)
4758     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4759
4760   if (drag_dest_path)
4761     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4762                               &drag_highlight_tree, &drag_highlight);
4763
4764   draw_vgrid_lines =
4765     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4766     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4767   draw_hgrid_lines =
4768     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4769     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4770
4771   if (draw_vgrid_lines || draw_hgrid_lines)
4772     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4773
4774   n_visible_columns = 0;
4775   for (list = tree_view->priv->columns; list; list = list->next)
4776     {
4777       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4778         continue;
4779       n_visible_columns ++;
4780     }
4781
4782   /* Find the last column */
4783   for (last_column = g_list_last (tree_view->priv->columns);
4784        last_column &&
4785        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4786        last_column = last_column->prev)
4787     ;
4788
4789   /* and the first */
4790   for (first_column = g_list_first (tree_view->priv->columns);
4791        first_column &&
4792        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4793        first_column = first_column->next)
4794     ;
4795
4796   /* Actually process the expose event.  To do this, we want to
4797    * start at the first node of the event, and walk the tree in
4798    * order, drawing each successive node.
4799    */
4800
4801   do
4802     {
4803       gboolean parity;
4804       gboolean is_separator = FALSE;
4805       gboolean is_first = FALSE;
4806       gboolean is_last = FALSE;
4807       gint n_col = 0;
4808
4809       is_separator = row_is_separator (tree_view, &iter, NULL);
4810
4811       max_height = gtk_tree_view_get_row_height (tree_view, node);
4812
4813       cell_offset = 0;
4814       highlight_x = 0; /* should match x coord of first cell */
4815       expander_cell_width = 0;
4816
4817       background_area.y = y_offset + clip.y;
4818       background_area.height = max_height;
4819
4820       flags = 0;
4821
4822       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4823         flags |= GTK_CELL_RENDERER_PRELIT;
4824
4825       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4826         flags |= GTK_CELL_RENDERER_SELECTED;
4827
4828       parity = _gtk_rbtree_node_find_parity (tree, node);
4829
4830       /* we *need* to set cell data on all cells before the call
4831        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4832        * return a correct value.
4833        */
4834       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4835            list;
4836            list = (rtl ? list->prev : list->next))
4837         {
4838           GtkTreeViewColumn *column = list->data;
4839           gtk_tree_view_column_cell_set_cell_data (column,
4840                                                    tree_view->priv->model,
4841                                                    &iter,
4842                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4843                                                    node->children?TRUE:FALSE);
4844         }
4845
4846       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4847
4848       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4849            list;
4850            list = (rtl ? list->prev : list->next))
4851         {
4852           GtkTreeViewColumn *column = list->data;
4853           GtkRegionFlags row_flags = 0, column_flags = 0;
4854           GtkStateFlags state = 0;
4855           gint width;
4856           gboolean draw_focus;
4857
4858           if (!gtk_tree_view_column_get_visible (column))
4859             continue;
4860
4861           n_col++;
4862           width = gtk_tree_view_column_get_width (column);
4863
4864           if (cell_offset > clip.x + clip.width ||
4865               cell_offset + width < clip.x)
4866             {
4867               cell_offset += width;
4868               continue;
4869             }
4870
4871           if (gtk_tree_view_column_get_sort_indicator (column))
4872             flags |= GTK_CELL_RENDERER_SORTED;
4873           else
4874             flags &= ~GTK_CELL_RENDERER_SORTED;
4875
4876           if (cursor == node)
4877             flags |= GTK_CELL_RENDERER_FOCUSED;
4878           else
4879             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4880
4881           background_area.x = cell_offset;
4882           background_area.width = width;
4883
4884           cell_area = background_area;
4885           cell_area.y += vertical_separator / 2;
4886           cell_area.x += horizontal_separator / 2;
4887           cell_area.height -= vertical_separator;
4888           cell_area.width -= horizontal_separator;
4889
4890           if (draw_vgrid_lines)
4891             {
4892               if (list == first_column)
4893                 {
4894                   cell_area.width -= grid_line_width / 2;
4895                 }
4896               else if (list == last_column)
4897                 {
4898                   cell_area.x += grid_line_width / 2;
4899                   cell_area.width -= grid_line_width / 2;
4900                 }
4901               else
4902                 {
4903                   cell_area.x += grid_line_width / 2;
4904                   cell_area.width -= grid_line_width;
4905                 }
4906             }
4907
4908           if (draw_hgrid_lines)
4909             {
4910               cell_area.y += grid_line_width / 2;
4911               cell_area.height -= grid_line_width;
4912             }
4913
4914           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4915             {
4916               cell_offset += gtk_tree_view_column_get_width (column);
4917               continue;
4918             }
4919
4920           gtk_tree_view_column_cell_set_cell_data (column,
4921                                                    tree_view->priv->model,
4922                                                    &iter,
4923                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4924                                                    node->children?TRUE:FALSE);
4925
4926           /* Select the detail for drawing the cell.  relevant
4927            * factors are parity, sortedness, and whether to
4928            * display rules.
4929            */
4930           if (allow_rules && tree_view->priv->has_rules)
4931             {
4932               if (parity)
4933                 row_flags |= GTK_REGION_ODD;
4934               else
4935                 row_flags |= GTK_REGION_EVEN;
4936             }
4937
4938           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4939               n_visible_columns >= 3)
4940             column_flags |= GTK_REGION_SORTED;
4941
4942           is_first = (rtl ? !list->next : !list->prev);
4943           is_last = (rtl ? !list->prev : !list->next);
4944
4945           if (is_first)
4946             column_flags |= GTK_REGION_FIRST;
4947
4948           if (is_last)
4949             column_flags |= GTK_REGION_LAST;
4950
4951           if ((n_col % 2) == 0)
4952             column_flags |= GTK_REGION_EVEN;
4953           else
4954             column_flags |= GTK_REGION_ODD;
4955
4956           gtk_style_context_save (context);
4957
4958           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4959           gtk_style_context_set_state (context, state);
4960
4961           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4962           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4963           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4964
4965           if (node == cursor && has_can_focus_cell
4966               && ((column == tree_view->priv->focus_column
4967                    && tree_view->priv->draw_keyfocus &&
4968                    gtk_widget_has_focus (widget))
4969                   || (column == tree_view->priv->edited_column)))
4970             draw_focus = TRUE;
4971           else
4972             draw_focus = FALSE;
4973
4974           /* Draw background */
4975           gtk_render_background (context, cr,
4976                                  background_area.x,
4977                                  background_area.y,
4978                                  background_area.width,
4979                                  background_area.height);
4980
4981           /* Draw frame */
4982           gtk_render_frame (context, cr,
4983                             background_area.x,
4984                             background_area.y,
4985                             background_area.width,
4986                             background_area.height);
4987
4988           if (gtk_tree_view_is_expander_column (tree_view, column))
4989             {
4990               if (!rtl)
4991                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4992               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4993
4994               if (gtk_tree_view_draw_expanders (tree_view))
4995                 {
4996                   if (!rtl)
4997                     cell_area.x += depth * tree_view->priv->expander_size;
4998                   cell_area.width -= depth * tree_view->priv->expander_size;
4999                 }
5000
5001               /* If we have an expander column, the highlight underline
5002                * starts with that column, so that it indicates which
5003                * level of the tree we're dropping at.
5004                */
5005               highlight_x = cell_area.x;
5006               expander_cell_width = cell_area.width;
5007
5008               if (is_separator)
5009                 gtk_render_line (context, cr,
5010                                  cell_area.x,
5011                                  cell_area.y + cell_area.height / 2,
5012                                  cell_area.x + cell_area.width,
5013                                  cell_area.y + cell_area.height / 2);
5014               else
5015                 _gtk_tree_view_column_cell_render (column,
5016                                                    cr,
5017                                                    &background_area,
5018                                                    &cell_area,
5019                                                    flags,
5020                                                    draw_focus);
5021               if (gtk_tree_view_draw_expanders (tree_view)
5022                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5023                 {
5024                   if (!got_pointer)
5025                     {
5026                       gdk_window_get_pointer (tree_view->priv->bin_window,
5027                                               &pointer_x, &pointer_y, NULL);
5028                       got_pointer = TRUE;
5029                     }
5030
5031                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5032                                             cr,
5033                                             tree,
5034                                             node,
5035                                             pointer_x, pointer_y);
5036                 }
5037             }
5038           else
5039             {
5040               if (is_separator)
5041                 {
5042                   gtk_style_context_save (context);
5043                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5044
5045                   gtk_render_line (context, cr,
5046                                    cell_area.x,
5047                                    cell_area.y + cell_area.height / 2,
5048                                    cell_area.x + cell_area.width,
5049                                    cell_area.y + cell_area.height / 2);
5050
5051                   gtk_style_context_restore (context);
5052                 }
5053               else
5054                 _gtk_tree_view_column_cell_render (column,
5055                                                    cr,
5056                                                    &background_area,
5057                                                    &cell_area,
5058                                                    flags,
5059                                                    draw_focus);
5060             }
5061
5062           if (draw_hgrid_lines)
5063             {
5064               if (background_area.y > 0)
5065                 gtk_tree_view_draw_line (tree_view, cr,
5066                                          GTK_TREE_VIEW_GRID_LINE,
5067                                          background_area.x, background_area.y,
5068                                          background_area.x + background_area.width,
5069                                          background_area.y);
5070
5071               if (y_offset + max_height >= clip.height)
5072                 gtk_tree_view_draw_line (tree_view, cr,
5073                                          GTK_TREE_VIEW_GRID_LINE,
5074                                          background_area.x, background_area.y + max_height,
5075                                          background_area.x + background_area.width,
5076                                          background_area.y + max_height);
5077             }
5078
5079           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5080               tree_view->priv->tree_lines_enabled)
5081             {
5082               gint x = background_area.x;
5083               gint mult = rtl ? -1 : 1;
5084               gint y0 = background_area.y;
5085               gint y1 = background_area.y + background_area.height/2;
5086               gint y2 = background_area.y + background_area.height;
5087
5088               if (rtl)
5089                 x += background_area.width - 1;
5090
5091               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5092                   && depth > 1)
5093                 {
5094                   gtk_tree_view_draw_line (tree_view, cr,
5095                                            GTK_TREE_VIEW_TREE_LINE,
5096                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5097                                            y1,
5098                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5099                                            y1);
5100                 }
5101               else if (depth > 1)
5102                 {
5103                   gtk_tree_view_draw_line (tree_view, cr,
5104                                            GTK_TREE_VIEW_TREE_LINE,
5105                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5106                                            y1,
5107                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5108                                            y1);
5109                 }
5110
5111               if (depth > 1)
5112                 {
5113                   gint i;
5114                   GtkRBNode *tmp_node;
5115                   GtkRBTree *tmp_tree;
5116
5117                   if (!_gtk_rbtree_next (tree, node))
5118                     gtk_tree_view_draw_line (tree_view, cr,
5119                                              GTK_TREE_VIEW_TREE_LINE,
5120                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5121                                              y0,
5122                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5123                                              y1);
5124                   else
5125                     gtk_tree_view_draw_line (tree_view, cr,
5126                                              GTK_TREE_VIEW_TREE_LINE,
5127                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5128                                              y0,
5129                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5130                                              y2);
5131
5132                   tmp_node = tree->parent_node;
5133                   tmp_tree = tree->parent_tree;
5134
5135                   for (i = depth - 2; i > 0; i--)
5136                     {
5137                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5138                         gtk_tree_view_draw_line (tree_view, cr,
5139                                                  GTK_TREE_VIEW_TREE_LINE,
5140                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5141                                                  y0,
5142                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5143                                                  y2);
5144
5145                       tmp_node = tmp_tree->parent_node;
5146                       tmp_tree = tmp_tree->parent_tree;
5147                     }
5148                 }
5149             }
5150
5151           gtk_style_context_restore (context);
5152           cell_offset += gtk_tree_view_column_get_width (column);
5153         }
5154
5155       if (node == drag_highlight)
5156         {
5157           /* Draw indicator for the drop
5158            */
5159           gint highlight_y = -1;
5160           GtkRBTree *tree = NULL;
5161           GtkRBNode *node = NULL;
5162
5163           switch (tree_view->priv->drag_dest_pos)
5164             {
5165             case GTK_TREE_VIEW_DROP_BEFORE:
5166               highlight_y = background_area.y - 1;
5167               if (highlight_y < 0)
5168                       highlight_y = 0;
5169               break;
5170
5171             case GTK_TREE_VIEW_DROP_AFTER:
5172               highlight_y = background_area.y + background_area.height - 1;
5173               break;
5174
5175             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5176             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5177               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5178
5179               if (tree == NULL)
5180                 break;
5181
5182               gtk_render_focus (context, cr,
5183                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5184                                    - focus_line_width / 2,
5185                                 gdk_window_get_width (tree_view->priv->bin_window),
5186                                 gtk_tree_view_get_row_height (tree_view, node)
5187                                    - focus_line_width + 1);
5188               break;
5189             }
5190
5191           if (highlight_y >= 0)
5192             {
5193               gtk_tree_view_draw_line (tree_view, cr,
5194                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5195                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5196                                        highlight_y,
5197                                        rtl ? 0 : bin_window_width,
5198                                        highlight_y);
5199             }
5200         }
5201
5202       /* draw the big row-spanning focus rectangle, if needed */
5203       if (!has_can_focus_cell && node == cursor &&
5204           tree_view->priv->draw_keyfocus &&
5205           gtk_widget_has_focus (widget))
5206         {
5207           gint tmp_y, tmp_height;
5208           GtkStateFlags focus_rect_state = 0;
5209
5210           gtk_style_context_save (context);
5211
5212           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5213           gtk_style_context_set_state (context, focus_rect_state);
5214
5215           if (draw_hgrid_lines)
5216             {
5217               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5218               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5219             }
5220           else
5221             {
5222               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5223               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5224             }
5225
5226           gtk_render_focus (context, cr,
5227                             0, tmp_y,
5228                             gdk_window_get_width (tree_view->priv->bin_window),
5229                             tmp_height);
5230
5231           gtk_style_context_restore (context);
5232         }
5233
5234       y_offset += max_height;
5235       if (node->children)
5236         {
5237           GtkTreeIter parent = iter;
5238           gboolean has_child;
5239
5240           tree = node->children;
5241           node = tree->root;
5242
5243           g_assert (node != tree->nil);
5244
5245           while (node->left != tree->nil)
5246             node = node->left;
5247           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5248                                                     &iter,
5249                                                     &parent);
5250           depth++;
5251
5252           /* Sanity Check! */
5253           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5254         }
5255       else
5256         {
5257           gboolean done = FALSE;
5258
5259           do
5260             {
5261               node = _gtk_rbtree_next (tree, node);
5262               if (node != NULL)
5263                 {
5264                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5265                   done = TRUE;
5266
5267                   /* Sanity Check! */
5268                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5269                 }
5270               else
5271                 {
5272                   GtkTreeIter parent_iter = iter;
5273                   gboolean has_parent;
5274
5275                   node = tree->parent_node;
5276                   tree = tree->parent_tree;
5277                   if (tree == NULL)
5278                     /* we should go to done to free some memory */
5279                     goto done;
5280                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5281                                                            &iter,
5282                                                            &parent_iter);
5283                   depth--;
5284
5285                   /* Sanity check */
5286                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5287                 }
5288             }
5289           while (!done);
5290         }
5291     }
5292   while (y_offset < clip.height);
5293
5294 done:
5295   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5296
5297   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5298     gtk_tree_view_paint_rubber_band (tree_view, cr);
5299
5300   if (cursor_path)
5301     gtk_tree_path_free (cursor_path);
5302
5303   if (drag_dest_path)
5304     gtk_tree_path_free (drag_dest_path);
5305
5306   return FALSE;
5307 }
5308
5309 static gboolean
5310 gtk_tree_view_draw (GtkWidget *widget,
5311                     cairo_t   *cr)
5312 {
5313   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5314   GtkWidget   *button;
5315
5316   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5317     {
5318       GtkStyleContext *context;
5319       GList *tmp_list;
5320
5321       context = gtk_widget_get_style_context (widget);
5322
5323       cairo_save (cr);
5324
5325       gtk_style_context_save (context);
5326       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5327
5328       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5329
5330       gtk_tree_view_bin_draw (widget, cr);
5331
5332       gtk_style_context_restore (context);
5333       cairo_restore (cr);
5334
5335       /* We can't just chain up to Container::draw as it will try to send the
5336        * event to the headers, so we handle propagating it to our children
5337        * (eg. widgets being edited) ourselves.
5338        */
5339       tmp_list = tree_view->priv->children;
5340       while (tmp_list)
5341         {
5342           GtkTreeViewChild *child = tmp_list->data;
5343           tmp_list = tmp_list->next;
5344
5345           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5346         }
5347     }
5348
5349   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5350     {
5351       GList *list;
5352
5353       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5354         {
5355           GtkTreeViewColumn *column = list->data;
5356
5357           if (column == tree_view->priv->drag_column)
5358             continue;
5359
5360           if (gtk_tree_view_column_get_visible (column))
5361             {
5362               button = gtk_tree_view_column_get_button (column);
5363               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5364                                             button, cr);
5365             }
5366         }
5367     }
5368
5369   if (tree_view->priv->drag_window &&
5370       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5371     {
5372       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5373       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5374                                     button, cr);
5375     }
5376
5377   return TRUE;
5378 }
5379
5380 enum
5381 {
5382   DROP_HOME,
5383   DROP_RIGHT,
5384   DROP_LEFT,
5385   DROP_END
5386 };
5387
5388 /* returns 0x1 when no column has been found -- yes it's hackish */
5389 static GtkTreeViewColumn *
5390 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5391                                GtkTreeViewColumn *column,
5392                                gint               drop_position)
5393 {
5394   GtkTreeViewColumn *left_column = NULL;
5395   GtkTreeViewColumn *cur_column = NULL;
5396   GList *tmp_list;
5397
5398   if (!gtk_tree_view_column_get_reorderable (column))
5399     return (GtkTreeViewColumn *)0x1;
5400
5401   switch (drop_position)
5402     {
5403       case DROP_HOME:
5404         /* find first column where we can drop */
5405         tmp_list = tree_view->priv->columns;
5406         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5407           return (GtkTreeViewColumn *)0x1;
5408
5409         while (tmp_list)
5410           {
5411             g_assert (tmp_list);
5412
5413             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5414             tmp_list = tmp_list->next;
5415
5416             if (left_column &&
5417                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5418               continue;
5419
5420             if (!tree_view->priv->column_drop_func)
5421               return left_column;
5422
5423             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5424               {
5425                 left_column = cur_column;
5426                 continue;
5427               }
5428
5429             return left_column;
5430           }
5431
5432         if (!tree_view->priv->column_drop_func)
5433           return left_column;
5434
5435         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5436           return left_column;
5437         else
5438           return (GtkTreeViewColumn *)0x1;
5439         break;
5440
5441       case DROP_RIGHT:
5442         /* find first column after column where we can drop */
5443         tmp_list = tree_view->priv->columns;
5444
5445         for (; tmp_list; tmp_list = tmp_list->next)
5446           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5447             break;
5448
5449         if (!tmp_list || !tmp_list->next)
5450           return (GtkTreeViewColumn *)0x1;
5451
5452         tmp_list = tmp_list->next;
5453         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5454         tmp_list = tmp_list->next;
5455
5456         while (tmp_list)
5457           {
5458             g_assert (tmp_list);
5459
5460             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5461             tmp_list = tmp_list->next;
5462
5463             if (left_column &&
5464                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5465               {
5466                 left_column = cur_column;
5467                 if (tmp_list)
5468                   tmp_list = tmp_list->next;
5469                 continue;
5470               }
5471
5472             if (!tree_view->priv->column_drop_func)
5473               return left_column;
5474
5475             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5476               {
5477                 left_column = cur_column;
5478                 continue;
5479               }
5480
5481             return left_column;
5482           }
5483
5484         if (!tree_view->priv->column_drop_func)
5485           return left_column;
5486
5487         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5488           return left_column;
5489         else
5490           return (GtkTreeViewColumn *)0x1;
5491         break;
5492
5493       case DROP_LEFT:
5494         /* find first column before column where we can drop */
5495         tmp_list = tree_view->priv->columns;
5496
5497         for (; tmp_list; tmp_list = tmp_list->next)
5498           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5499             break;
5500
5501         if (!tmp_list || !tmp_list->prev)
5502           return (GtkTreeViewColumn *)0x1;
5503
5504         tmp_list = tmp_list->prev;
5505         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5506         tmp_list = tmp_list->prev;
5507
5508         while (tmp_list)
5509           {
5510             g_assert (tmp_list);
5511
5512             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5513
5514             if (left_column &&
5515                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5516               {
5517                 /*if (!tmp_list->prev)
5518                   return (GtkTreeViewColumn *)0x1;
5519                   */
5520 /*
5521                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5522                 tmp_list = tmp_list->prev->prev;
5523                 continue;*/
5524
5525                 cur_column = left_column;
5526                 if (tmp_list)
5527                   tmp_list = tmp_list->prev;
5528                 continue;
5529               }
5530
5531             if (!tree_view->priv->column_drop_func)
5532               return left_column;
5533
5534             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5535               return left_column;
5536
5537             cur_column = left_column;
5538             tmp_list = tmp_list->prev;
5539           }
5540
5541         if (!tree_view->priv->column_drop_func)
5542           return NULL;
5543
5544         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5545           return NULL;
5546         else
5547           return (GtkTreeViewColumn *)0x1;
5548         break;
5549
5550       case DROP_END:
5551         /* same as DROP_HOME case, but doing it backwards */
5552         tmp_list = g_list_last (tree_view->priv->columns);
5553         cur_column = NULL;
5554
5555         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5556           return (GtkTreeViewColumn *)0x1;
5557
5558         while (tmp_list)
5559           {
5560             g_assert (tmp_list);
5561
5562             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5563
5564             if (left_column &&
5565                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5566               {
5567                 cur_column = left_column;
5568                 tmp_list = tmp_list->prev;
5569               }
5570
5571             if (!tree_view->priv->column_drop_func)
5572               return left_column;
5573
5574             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5575               return left_column;
5576
5577             cur_column = left_column;
5578             tmp_list = tmp_list->prev;
5579           }
5580
5581         if (!tree_view->priv->column_drop_func)
5582           return NULL;
5583
5584         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5585           return NULL;
5586         else
5587           return (GtkTreeViewColumn *)0x1;
5588         break;
5589     }
5590
5591   return (GtkTreeViewColumn *)0x1;
5592 }
5593
5594 static gboolean
5595 gtk_tree_view_key_press (GtkWidget   *widget,
5596                          GdkEventKey *event)
5597 {
5598   GtkTreeView *tree_view = (GtkTreeView *) widget;
5599   GtkWidget   *button;
5600
5601   if (tree_view->priv->rubber_band_status)
5602     {
5603       if (event->keyval == GDK_KEY_Escape)
5604         gtk_tree_view_stop_rubber_band (tree_view);
5605
5606       return TRUE;
5607     }
5608
5609   if (tree_view->priv->in_column_drag)
5610     {
5611       if (event->keyval == GDK_KEY_Escape)
5612         {
5613           tree_view->priv->cur_reorder = NULL;
5614           gtk_tree_view_button_release_drag_column (widget, NULL);
5615         }
5616       return TRUE;
5617     }
5618
5619   if (tree_view->priv->headers_visible)
5620     {
5621       GList *focus_column;
5622       gboolean rtl;
5623
5624       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5625
5626       for (focus_column = tree_view->priv->columns;
5627            focus_column;
5628            focus_column = focus_column->next)
5629         {
5630           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5631
5632           button = gtk_tree_view_column_get_button (column);
5633           if (gtk_widget_has_focus (button))
5634             break;
5635         }
5636
5637       if (focus_column &&
5638           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5639           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5640            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5641         {
5642           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5643           gint max_width, min_width;
5644
5645           if (!gtk_tree_view_column_get_resizable (column))
5646             {
5647               gtk_widget_error_bell (widget);
5648               return TRUE;
5649             }
5650
5651           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5652               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5653             {
5654               GtkRequisition button_req;
5655               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5656               gint new_width;
5657
5658               button = gtk_tree_view_column_get_button (column);
5659
5660               gtk_widget_get_preferred_size (button, &button_req, NULL);
5661
5662               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5663               new_width -= 2;
5664               if (new_width < 0)
5665                 new_width = 0;
5666
5667               _gtk_tree_view_column_set_resized_width (column, new_width);
5668
5669               min_width = gtk_tree_view_column_get_min_width (column);
5670               if (min_width == -1)
5671                 new_width = MAX (button_req.width, new_width);
5672               else
5673                 {
5674                   new_width = MAX (min_width, new_width);
5675                 }
5676
5677               max_width = gtk_tree_view_column_get_max_width (column);
5678               if (max_width != -1)
5679                 new_width = MIN (new_width, max_width);
5680
5681               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5682
5683               if (new_width != old_width)
5684                 {
5685                   _gtk_tree_view_column_set_resized_width (column, new_width);
5686                   gtk_widget_queue_resize (widget);
5687                 }
5688               else
5689                 gtk_widget_error_bell (widget);
5690             }
5691           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5692                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5693             {
5694               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5695               gint new_width;
5696
5697               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5698               new_width += 2;
5699
5700               max_width = gtk_tree_view_column_get_max_width (column);
5701               if (max_width != -1)
5702                 new_width = MIN (new_width, max_width);
5703
5704               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5705
5706               if (new_width != old_width)
5707                 {
5708                   _gtk_tree_view_column_set_resized_width (column, new_width);
5709                   gtk_widget_queue_resize (widget);
5710                 }
5711               else
5712                 gtk_widget_error_bell (widget);
5713             }
5714
5715           return TRUE;
5716         }
5717
5718       if (focus_column &&
5719           (event->state & GDK_MOD1_MASK) &&
5720           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5721            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5722            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5723            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5724         {
5725           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5726
5727           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5728               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5729             {
5730               GtkTreeViewColumn *col;
5731               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5732               if (col != (GtkTreeViewColumn *)0x1)
5733                 gtk_tree_view_move_column_after (tree_view, column, col);
5734               else
5735                 gtk_widget_error_bell (widget);
5736             }
5737           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5738                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5739             {
5740               GtkTreeViewColumn *col;
5741               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5742               if (col != (GtkTreeViewColumn *)0x1)
5743                 gtk_tree_view_move_column_after (tree_view, column, col);
5744               else
5745                 gtk_widget_error_bell (widget);
5746             }
5747           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5748             {
5749               GtkTreeViewColumn *col;
5750               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
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_End || event->keyval == GDK_KEY_KP_End)
5757             {
5758               GtkTreeViewColumn *col;
5759               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
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
5766           return TRUE;
5767         }
5768     }
5769
5770   /* Chain up to the parent class.  It handles the keybindings. */
5771   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5772     return TRUE;
5773
5774   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5775     {
5776       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5777       return FALSE;
5778     }
5779
5780   /* We pass the event to the search_entry.  If its text changes, then we start
5781    * the typeahead find capabilities. */
5782   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5783       && tree_view->priv->enable_search
5784       && !tree_view->priv->search_custom_entry_set)
5785     {
5786       GdkEvent *new_event;
5787       char *old_text;
5788       const char *new_text;
5789       gboolean retval;
5790       GdkScreen *screen;
5791       gboolean text_modified;
5792       gulong popup_menu_id;
5793
5794       gtk_tree_view_ensure_interactive_directory (tree_view);
5795
5796       /* Make a copy of the current text */
5797       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5798       new_event = gdk_event_copy ((GdkEvent *) event);
5799       g_object_unref (((GdkEventKey *) new_event)->window);
5800       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5801       gtk_widget_realize (tree_view->priv->search_window);
5802
5803       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5804                                         "popup-menu", G_CALLBACK (gtk_true),
5805                                         NULL);
5806
5807       /* Move the entry off screen */
5808       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5809       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5810                        gdk_screen_get_width (screen) + 1,
5811                        gdk_screen_get_height (screen) + 1);
5812       gtk_widget_show (tree_view->priv->search_window);
5813
5814       /* Send the event to the window.  If the preedit_changed signal is emitted
5815        * during this event, we will set priv->imcontext_changed  */
5816       tree_view->priv->imcontext_changed = FALSE;
5817       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5818       gdk_event_free (new_event);
5819       gtk_widget_hide (tree_view->priv->search_window);
5820
5821       g_signal_handler_disconnect (tree_view->priv->search_entry,
5822                                    popup_menu_id);
5823
5824       /* We check to make sure that the entry tried to handle the text, and that
5825        * the text has changed.
5826        */
5827       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5828       text_modified = strcmp (old_text, new_text) != 0;
5829       g_free (old_text);
5830       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5831           (retval && text_modified))               /* ...or the text was modified */
5832         {
5833           if (gtk_tree_view_real_start_interactive_search (tree_view,
5834                                                            gdk_event_get_device ((GdkEvent *) event),
5835                                                            FALSE))
5836             {
5837               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5838               return TRUE;
5839             }
5840           else
5841             {
5842               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5843               return FALSE;
5844             }
5845         }
5846     }
5847
5848   return FALSE;
5849 }
5850
5851 static gboolean
5852 gtk_tree_view_key_release (GtkWidget   *widget,
5853                            GdkEventKey *event)
5854 {
5855   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5856
5857   if (tree_view->priv->rubber_band_status)
5858     return TRUE;
5859
5860   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5861 }
5862
5863 /* FIXME Is this function necessary? Can I get an enter_notify event
5864  * w/o either an expose event or a mouse motion event?
5865  */
5866 static gboolean
5867 gtk_tree_view_enter_notify (GtkWidget        *widget,
5868                             GdkEventCrossing *event)
5869 {
5870   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5871   GtkRBTree *tree;
5872   GtkRBNode *node;
5873   gint new_y;
5874
5875   /* Sanity check it */
5876   if (event->window != tree_view->priv->bin_window)
5877     return FALSE;
5878
5879   if (tree_view->priv->tree == NULL)
5880     return FALSE;
5881
5882   if (event->mode == GDK_CROSSING_GRAB ||
5883       event->mode == GDK_CROSSING_GTK_GRAB ||
5884       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5885       event->mode == GDK_CROSSING_STATE_CHANGED)
5886     return TRUE;
5887
5888   /* find the node internally */
5889   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5890   if (new_y < 0)
5891     new_y = 0;
5892   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5893
5894   tree_view->priv->event_last_x = event->x;
5895   tree_view->priv->event_last_y = event->y;
5896
5897   if ((tree_view->priv->button_pressed_node == NULL) ||
5898       (tree_view->priv->button_pressed_node == node))
5899     prelight_or_select (tree_view, tree, node, event->x, event->y);
5900
5901   return TRUE;
5902 }
5903
5904 static gboolean
5905 gtk_tree_view_leave_notify (GtkWidget        *widget,
5906                             GdkEventCrossing *event)
5907 {
5908   GtkTreeView *tree_view;
5909
5910   if (event->mode == GDK_CROSSING_GRAB)
5911     return TRUE;
5912
5913   tree_view = GTK_TREE_VIEW (widget);
5914
5915   if (tree_view->priv->prelight_node)
5916     _gtk_tree_view_queue_draw_node (tree_view,
5917                                    tree_view->priv->prelight_tree,
5918                                    tree_view->priv->prelight_node,
5919                                    NULL);
5920
5921   tree_view->priv->event_last_x = -10000;
5922   tree_view->priv->event_last_y = -10000;
5923
5924   prelight_or_select (tree_view,
5925                       NULL, NULL,
5926                       -1000, -1000); /* coords not possibly over an arrow */
5927
5928   return TRUE;
5929 }
5930
5931
5932 static gint
5933 gtk_tree_view_focus_out (GtkWidget     *widget,
5934                          GdkEventFocus *event)
5935 {
5936   GtkTreeView *tree_view;
5937
5938   tree_view = GTK_TREE_VIEW (widget);
5939
5940   gtk_widget_queue_draw (widget);
5941
5942   /* destroy interactive search dialog */
5943   if (tree_view->priv->search_window)
5944     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5945                                       gdk_event_get_device ((GdkEvent *) event));
5946
5947   return FALSE;
5948 }
5949
5950
5951 /* Incremental Reflow
5952  */
5953
5954 static void
5955 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5956                                  GtkRBTree   *tree,
5957                                  GtkRBNode   *node)
5958 {
5959   GtkAllocation allocation;
5960   gint y;
5961
5962   y = _gtk_rbtree_node_find_offset (tree, node)
5963     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5964     + gtk_tree_view_get_effective_header_height (tree_view);
5965
5966   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5967   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5968                               0, y,
5969                               allocation.width,
5970                               GTK_RBNODE_GET_HEIGHT (node));
5971 }
5972
5973 static gboolean
5974 node_is_visible (GtkTreeView *tree_view,
5975                  GtkRBTree   *tree,
5976                  GtkRBNode   *node)
5977 {
5978   int y;
5979   int height;
5980
5981   y = _gtk_rbtree_node_find_offset (tree, node);
5982   height = gtk_tree_view_get_row_height (tree_view, node);
5983
5984   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
5985       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
5986                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
5987     return TRUE;
5988
5989   return FALSE;
5990 }
5991
5992 /* Returns TRUE if it updated the size
5993  */
5994 static gboolean
5995 validate_row (GtkTreeView *tree_view,
5996               GtkRBTree   *tree,
5997               GtkRBNode   *node,
5998               GtkTreeIter *iter,
5999               GtkTreePath *path)
6000 {
6001   GtkTreeViewColumn *column;
6002   GList *list, *first_column, *last_column;
6003   gint height = 0;
6004   gint horizontal_separator;
6005   gint vertical_separator;
6006   gint depth = gtk_tree_path_get_depth (path);
6007   gboolean retval = FALSE;
6008   gboolean is_separator = FALSE;
6009   gboolean draw_vgrid_lines, draw_hgrid_lines;
6010   gint focus_pad;
6011   gint grid_line_width;
6012   gboolean wide_separators;
6013   gint separator_height;
6014
6015   /* double check the row needs validating */
6016   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6017       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6018     return FALSE;
6019
6020   is_separator = row_is_separator (tree_view, iter, NULL);
6021
6022   gtk_widget_style_get (GTK_WIDGET (tree_view),
6023                         "focus-padding", &focus_pad,
6024                         "horizontal-separator", &horizontal_separator,
6025                         "vertical-separator", &vertical_separator,
6026                         "grid-line-width", &grid_line_width,
6027                         "wide-separators",  &wide_separators,
6028                         "separator-height", &separator_height,
6029                         NULL);
6030
6031   draw_vgrid_lines =
6032     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6033     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6034   draw_hgrid_lines =
6035     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6036     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6037
6038   for (last_column = g_list_last (tree_view->priv->columns);
6039        last_column &&
6040        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6041        last_column = last_column->prev)
6042     ;
6043
6044   for (first_column = g_list_first (tree_view->priv->columns);
6045        first_column &&
6046        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6047        first_column = first_column->next)
6048     ;
6049
6050   for (list = tree_view->priv->columns; list; list = list->next)
6051     {
6052       gint padding = 0;
6053       gint original_width;
6054       gint new_width;
6055       gint row_height;
6056
6057       column = list->data;
6058
6059       if (!gtk_tree_view_column_get_visible (column))
6060         continue;
6061
6062       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6063           !_gtk_tree_view_column_cell_get_dirty (column))
6064         continue;
6065
6066       original_width = _gtk_tree_view_column_get_requested_width (column);
6067
6068       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6069                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6070                                                node->children?TRUE:FALSE);
6071       gtk_tree_view_column_cell_get_size (column,
6072                                           NULL, NULL, NULL,
6073                                           NULL, &row_height);
6074
6075       if (!is_separator)
6076         {
6077           row_height += vertical_separator;
6078           height = MAX (height, row_height);
6079           height = MAX (height, tree_view->priv->expander_size);
6080         }
6081       else
6082         {
6083           if (wide_separators)
6084             height = separator_height + 2 * focus_pad;
6085           else
6086             height = 2 + 2 * focus_pad;
6087         }
6088
6089       if (gtk_tree_view_is_expander_column (tree_view, column))
6090         {
6091           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6092
6093           if (gtk_tree_view_draw_expanders (tree_view))
6094             padding += depth * tree_view->priv->expander_size;
6095         }
6096       else
6097         padding += horizontal_separator;
6098
6099       if (draw_vgrid_lines)
6100         {
6101           if (list->data == first_column || list->data == last_column)
6102             padding += grid_line_width / 2.0;
6103           else
6104             padding += grid_line_width;
6105         }
6106
6107       /* Update the padding for the column */
6108       _gtk_tree_view_column_push_padding (column, padding);
6109       new_width = _gtk_tree_view_column_get_requested_width (column);
6110
6111       if (new_width > original_width)
6112         retval = TRUE;
6113     }
6114
6115   if (draw_hgrid_lines)
6116     height += grid_line_width;
6117
6118   if (height != GTK_RBNODE_GET_HEIGHT (node))
6119     {
6120       retval = TRUE;
6121       _gtk_rbtree_node_set_height (tree, node, height);
6122     }
6123   _gtk_rbtree_node_mark_valid (tree, node);
6124   tree_view->priv->post_validation_flag = TRUE;
6125
6126   return retval;
6127 }
6128
6129
6130 static void
6131 validate_visible_area (GtkTreeView *tree_view)
6132 {
6133   GtkAllocation allocation;
6134   GtkTreePath *path = NULL;
6135   GtkTreePath *above_path = NULL;
6136   GtkTreeIter iter;
6137   GtkRBTree *tree = NULL;
6138   GtkRBNode *node = NULL;
6139   gboolean need_redraw = FALSE;
6140   gboolean size_changed = FALSE;
6141   gint total_height;
6142   gint area_above = 0;
6143   gint area_below = 0;
6144
6145   if (tree_view->priv->tree == NULL)
6146     return;
6147
6148   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6149       tree_view->priv->scroll_to_path == NULL)
6150     return;
6151
6152   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6153   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6154
6155   if (total_height == 0)
6156     return;
6157
6158   /* First, we check to see if we need to scroll anywhere
6159    */
6160   if (tree_view->priv->scroll_to_path)
6161     {
6162       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6163       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6164         {
6165           /* we are going to scroll, and will update dy */
6166           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6167           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6168               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6169             {
6170               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6171               if (validate_row (tree_view, tree, node, &iter, path))
6172                 size_changed = TRUE;
6173             }
6174
6175           if (tree_view->priv->scroll_to_use_align)
6176             {
6177               gint height = gtk_tree_view_get_row_height (tree_view, node);
6178               area_above = (total_height - height) *
6179                 tree_view->priv->scroll_to_row_align;
6180               area_below = total_height - area_above - height;
6181               area_above = MAX (area_above, 0);
6182               area_below = MAX (area_below, 0);
6183             }
6184           else
6185             {
6186               /* two cases:
6187                * 1) row not visible
6188                * 2) row visible
6189                */
6190               gint dy;
6191               gint height = gtk_tree_view_get_row_height (tree_view, node);
6192
6193               dy = _gtk_rbtree_node_find_offset (tree, node);
6194
6195               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6196                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6197                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6198                 {
6199                   /* row visible: keep the row at the same position */
6200                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6201                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6202                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6203                                - dy - height;
6204                 }
6205               else
6206                 {
6207                   /* row not visible */
6208                   if (dy >= 0
6209                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6210                     {
6211                       /* row at the beginning -- fixed */
6212                       area_above = dy;
6213                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6214                                    - area_above - height;
6215                     }
6216                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6217                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6218                     {
6219                       /* row at the end -- fixed */
6220                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6221                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6222                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6223                                    area_above - height;
6224
6225                       if (area_below < 0)
6226                         {
6227                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6228                           area_below = 0;
6229                         }
6230                     }
6231                   else
6232                     {
6233                       /* row somewhere in the middle, bring it to the top
6234                        * of the view
6235                        */
6236                       area_above = 0;
6237                       area_below = total_height - height;
6238                     }
6239                 }
6240             }
6241         }
6242       else
6243         /* the scroll to isn't valid; ignore it.
6244          */
6245         {
6246           if (tree_view->priv->scroll_to_path && !path)
6247             {
6248               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6249               tree_view->priv->scroll_to_path = NULL;
6250             }
6251           if (path)
6252             gtk_tree_path_free (path);
6253           path = NULL;
6254         }
6255     }
6256
6257   /* We didn't have a scroll_to set, so we just handle things normally
6258    */
6259   if (path == NULL)
6260     {
6261       gint offset;
6262
6263       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6264                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6265                                         &tree, &node);
6266       if (node == NULL)
6267         {
6268           /* In this case, nothing has been validated */
6269           path = gtk_tree_path_new_first ();
6270           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6271         }
6272       else
6273         {
6274           path = _gtk_tree_view_find_path (tree_view, tree, node);
6275           total_height += offset;
6276         }
6277
6278       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6279
6280       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6281           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6282         {
6283           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6284           if (validate_row (tree_view, tree, node, &iter, path))
6285             size_changed = TRUE;
6286         }
6287       area_above = 0;
6288       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6289     }
6290
6291   above_path = gtk_tree_path_copy (path);
6292
6293   /* if we do not validate any row above the new top_row, we will make sure
6294    * that the row immediately above top_row has been validated. (if we do not
6295    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6296    * when invalidated that row's height will be zero. and this will mess up
6297    * scrolling).
6298    */
6299   if (area_above == 0)
6300     {
6301       GtkRBTree *tmptree;
6302       GtkRBNode *tmpnode;
6303
6304       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6305       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6306
6307       if (tmpnode)
6308         {
6309           GtkTreePath *tmppath;
6310           GtkTreeIter tmpiter;
6311
6312           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6313           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6314
6315           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6316               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6317             {
6318               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6319               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6320                 size_changed = TRUE;
6321             }
6322
6323           gtk_tree_path_free (tmppath);
6324         }
6325     }
6326
6327   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6328    * backwards is much slower then forward, as there is no iter_prev function.
6329    * We go forwards first in case we run out of tree.  Then we go backwards to
6330    * fill out the top.
6331    */
6332   while (node && area_below > 0)
6333     {
6334       if (node->children)
6335         {
6336           GtkTreeIter parent = iter;
6337           gboolean has_child;
6338
6339           tree = node->children;
6340           node = tree->root;
6341
6342           g_assert (node != tree->nil);
6343
6344           while (node->left != tree->nil)
6345             node = node->left;
6346           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6347                                                     &iter,
6348                                                     &parent);
6349           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6350           gtk_tree_path_down (path);
6351         }
6352       else
6353         {
6354           gboolean done = FALSE;
6355           do
6356             {
6357               node = _gtk_rbtree_next (tree, node);
6358               if (node != NULL)
6359                 {
6360                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6361                   done = TRUE;
6362                   gtk_tree_path_next (path);
6363
6364                   /* Sanity Check! */
6365                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6366                 }
6367               else
6368                 {
6369                   GtkTreeIter parent_iter = iter;
6370                   gboolean has_parent;
6371
6372                   node = tree->parent_node;
6373                   tree = tree->parent_tree;
6374                   if (tree == NULL)
6375                     break;
6376                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6377                                                            &iter,
6378                                                            &parent_iter);
6379                   gtk_tree_path_up (path);
6380
6381                   /* Sanity check */
6382                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6383                 }
6384             }
6385           while (!done);
6386         }
6387
6388       if (!node)
6389         break;
6390
6391       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6392           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6393         {
6394           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6395           if (validate_row (tree_view, tree, node, &iter, path))
6396               size_changed = TRUE;
6397         }
6398
6399       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6400     }
6401   gtk_tree_path_free (path);
6402
6403   /* If we ran out of tree, and have extra area_below left, we need to add it
6404    * to area_above */
6405   if (area_below > 0)
6406     area_above += area_below;
6407
6408   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6409
6410   /* We walk backwards */
6411   while (area_above > 0)
6412     {
6413       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6414
6415       /* Always find the new path in the tree.  We cannot just assume
6416        * a gtk_tree_path_prev() is enough here, as there might be children
6417        * in between this node and the previous sibling node.  If this
6418        * appears to be a performance hotspot in profiles, we can look into
6419        * intrigate logic for keeping path, node and iter in sync like
6420        * we do for forward walks.  (Which will be hard because of the lacking
6421        * iter_prev).
6422        */
6423
6424       if (node == NULL)
6425         break;
6426
6427       gtk_tree_path_free (above_path);
6428       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6429
6430       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6431
6432       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6433           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6434         {
6435           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6436           if (validate_row (tree_view, tree, node, &iter, above_path))
6437             size_changed = TRUE;
6438         }
6439       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6440     }
6441
6442   /* if we scrolled to a path, we need to set the dy here,
6443    * and sync the top row accordingly
6444    */
6445   if (tree_view->priv->scroll_to_path)
6446     {
6447       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6448       gtk_tree_view_top_row_to_dy (tree_view);
6449
6450       need_redraw = TRUE;
6451     }
6452   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6453     {
6454       /* when we are not scrolling, we should never set dy to something
6455        * else than zero. we update top_row to be in sync with dy = 0.
6456        */
6457       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6458       gtk_tree_view_dy_to_top_row (tree_view);
6459     }
6460   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6461     {
6462       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6463       gtk_tree_view_dy_to_top_row (tree_view);
6464     }
6465   else
6466     gtk_tree_view_top_row_to_dy (tree_view);
6467
6468   /* update width/height and queue a resize */
6469   if (size_changed)
6470     {
6471       GtkRequisition requisition;
6472
6473       /* We temporarily guess a size, under the assumption that it will be the
6474        * same when we get our next size_allocate.  If we don't do this, we'll be
6475        * in an inconsistent state if we call top_row_to_dy. */
6476
6477       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6478                                      &requisition, NULL);
6479       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6480                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6481       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6482                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6483       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6484     }
6485
6486   if (tree_view->priv->scroll_to_path)
6487     {
6488       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6489       tree_view->priv->scroll_to_path = NULL;
6490     }
6491
6492   if (above_path)
6493     gtk_tree_path_free (above_path);
6494
6495   if (tree_view->priv->scroll_to_column)
6496     {
6497       tree_view->priv->scroll_to_column = NULL;
6498     }
6499   if (need_redraw)
6500     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6501 }
6502
6503 static void
6504 initialize_fixed_height_mode (GtkTreeView *tree_view)
6505 {
6506   if (!tree_view->priv->tree)
6507     return;
6508
6509   if (tree_view->priv->fixed_height < 0)
6510     {
6511       GtkTreeIter iter;
6512       GtkTreePath *path;
6513
6514       GtkRBTree *tree = NULL;
6515       GtkRBNode *node = NULL;
6516
6517       tree = tree_view->priv->tree;
6518       node = tree->root;
6519
6520       path = _gtk_tree_view_find_path (tree_view, tree, node);
6521       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6522
6523       validate_row (tree_view, tree, node, &iter, path);
6524
6525       gtk_tree_path_free (path);
6526
6527       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6528     }
6529
6530    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6531                                  tree_view->priv->fixed_height, TRUE);
6532 }
6533
6534 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6535  * the left-most uninvalidated node.  We then try walking right, validating
6536  * nodes.  Once we find a valid node, we repeat the previous process of finding
6537  * the first invalid node.
6538  */
6539
6540 static gboolean
6541 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6542 {
6543   GtkRBTree *tree = NULL;
6544   GtkRBNode *node = NULL;
6545   gboolean validated_area = FALSE;
6546   gint retval = TRUE;
6547   GtkTreePath *path = NULL;
6548   GtkTreeIter iter;
6549   GTimer *timer;
6550   gint i = 0;
6551
6552   gint y = -1;
6553   gint prev_height = -1;
6554   gboolean fixed_height = TRUE;
6555
6556   g_assert (tree_view);
6557
6558   if (tree_view->priv->tree == NULL)
6559       return FALSE;
6560
6561   if (tree_view->priv->fixed_height_mode)
6562     {
6563       if (tree_view->priv->fixed_height < 0)
6564         initialize_fixed_height_mode (tree_view);
6565
6566       return FALSE;
6567     }
6568
6569   timer = g_timer_new ();
6570   g_timer_start (timer);
6571
6572   do
6573     {
6574       gboolean changed = FALSE;
6575
6576       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6577         {
6578           retval = FALSE;
6579           goto done;
6580         }
6581
6582       if (path != NULL)
6583         {
6584           node = _gtk_rbtree_next (tree, node);
6585           if (node != NULL)
6586             {
6587               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6588               gtk_tree_path_next (path);
6589             }
6590           else
6591             {
6592               gtk_tree_path_free (path);
6593               path = NULL;
6594             }
6595         }
6596
6597       if (path == NULL)
6598         {
6599           tree = tree_view->priv->tree;
6600           node = tree_view->priv->tree->root;
6601
6602           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6603
6604           do
6605             {
6606               if (node->left != tree->nil &&
6607                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6608                 {
6609                   node = node->left;
6610                 }
6611               else if (node->right != tree->nil &&
6612                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6613                 {
6614                   node = node->right;
6615                 }
6616               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6617                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6618                 {
6619                   break;
6620                 }
6621               else if (node->children != NULL)
6622                 {
6623                   tree = node->children;
6624                   node = tree->root;
6625                 }
6626               else
6627                 /* RBTree corruption!  All bad */
6628                 g_assert_not_reached ();
6629             }
6630           while (TRUE);
6631           path = _gtk_tree_view_find_path (tree_view, tree, node);
6632           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6633         }
6634
6635       changed = validate_row (tree_view, tree, node, &iter, path);
6636       validated_area = changed || validated_area;
6637
6638       if (changed)
6639         {
6640           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6641
6642           if (y == -1 || y > offset)
6643             y = offset;
6644         }
6645
6646       if (!tree_view->priv->fixed_height_check)
6647         {
6648           gint height;
6649
6650           height = gtk_tree_view_get_row_height (tree_view, node);
6651           if (prev_height < 0)
6652             prev_height = height;
6653           else if (prev_height != height)
6654             fixed_height = FALSE;
6655         }
6656
6657       i++;
6658     }
6659   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6660
6661   if (!tree_view->priv->fixed_height_check)
6662    {
6663      if (fixed_height)
6664        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6665
6666      tree_view->priv->fixed_height_check = 1;
6667    }
6668
6669  done:
6670   if (validated_area)
6671     {
6672       GtkRequisition requisition;
6673
6674       /* We temporarily guess a size, under the assumption that it will be the
6675        * same when we get our next size_allocate.  If we don't do this, we'll be
6676        * in an inconsistent state when we call top_row_to_dy. */
6677
6678       /* FIXME: This is called from size_request, for some reason it is not infinitely
6679        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6680        * not allowed (from inside ->get_preferred_width/height() implementations, one
6681        * should call the vfuncs directly). However what is desired here is the full
6682        * size including any margins and limited by any alignment (i.e. after
6683        * GtkWidget:adjust_size_request() is called).
6684        *
6685        * Currently bypassing this but the real solution is to not update the scroll adjustments
6686        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6687        */
6688       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6689
6690       /* If rows above the current position have changed height, this has
6691        * affected the current view and thus needs a redraw.
6692        */
6693       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6694         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6695
6696       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6697                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6698       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6699                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6700
6701       if (queue_resize)
6702         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6703     }
6704
6705   if (path) gtk_tree_path_free (path);
6706   g_timer_destroy (timer);
6707
6708   return retval;
6709 }
6710
6711 static gboolean
6712 validate_rows (GtkTreeView *tree_view)
6713 {
6714   gboolean retval;
6715
6716   retval = do_validate_rows (tree_view, TRUE);
6717
6718   if (! retval && tree_view->priv->validate_rows_timer)
6719     {
6720       g_source_remove (tree_view->priv->validate_rows_timer);
6721       tree_view->priv->validate_rows_timer = 0;
6722     }
6723
6724   return retval;
6725 }
6726
6727 static gboolean
6728 validate_rows_handler (GtkTreeView *tree_view)
6729 {
6730   gboolean retval;
6731
6732   retval = do_validate_rows (tree_view, TRUE);
6733   if (! retval && tree_view->priv->validate_rows_timer)
6734     {
6735       g_source_remove (tree_view->priv->validate_rows_timer);
6736       tree_view->priv->validate_rows_timer = 0;
6737     }
6738
6739   return retval;
6740 }
6741
6742 static gboolean
6743 do_presize_handler (GtkTreeView *tree_view)
6744 {
6745   if (tree_view->priv->mark_rows_col_dirty)
6746     {
6747       if (tree_view->priv->tree)
6748         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6749       tree_view->priv->mark_rows_col_dirty = FALSE;
6750     }
6751   validate_visible_area (tree_view);
6752   tree_view->priv->presize_handler_timer = 0;
6753
6754   if (tree_view->priv->fixed_height_mode)
6755     {
6756       GtkRequisition requisition;
6757
6758       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6759                                      &requisition, NULL);
6760
6761       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6762                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6763       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6764                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6765       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6766     }
6767
6768   return FALSE;
6769 }
6770
6771 static gboolean
6772 presize_handler_callback (gpointer data)
6773 {
6774   do_presize_handler (GTK_TREE_VIEW (data));
6775
6776   return FALSE;
6777 }
6778
6779 static void
6780 install_presize_handler (GtkTreeView *tree_view)
6781 {
6782   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6783     return;
6784
6785   if (! tree_view->priv->presize_handler_timer)
6786     {
6787       tree_view->priv->presize_handler_timer =
6788         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6789     }
6790   if (! tree_view->priv->validate_rows_timer)
6791     {
6792       tree_view->priv->validate_rows_timer =
6793         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6794     }
6795 }
6796
6797 static void
6798 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6799 {
6800   /* Prior to drawing, we make sure the visible area is validated. */
6801   if (tree_view->priv->presize_handler_timer)
6802     {
6803       g_source_remove (tree_view->priv->presize_handler_timer);
6804       tree_view->priv->presize_handler_timer = 0;
6805
6806       do_presize_handler (tree_view);
6807     }
6808
6809   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6810 }
6811
6812 static gboolean
6813 scroll_sync_handler (GtkTreeView *tree_view)
6814 {
6815   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6816     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6817   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6818     gtk_tree_view_top_row_to_dy (tree_view);
6819   else
6820     gtk_tree_view_dy_to_top_row (tree_view);
6821
6822   tree_view->priv->scroll_sync_timer = 0;
6823
6824   return FALSE;
6825 }
6826
6827 static void
6828 install_scroll_sync_handler (GtkTreeView *tree_view)
6829 {
6830   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6831     return;
6832
6833   if (!tree_view->priv->scroll_sync_timer)
6834     {
6835       tree_view->priv->scroll_sync_timer =
6836         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6837     }
6838 }
6839
6840 static void
6841 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6842                            GtkTreePath *path,
6843                            gint         offset)
6844 {
6845   gtk_tree_row_reference_free (tree_view->priv->top_row);
6846
6847   if (!path)
6848     {
6849       tree_view->priv->top_row = NULL;
6850       tree_view->priv->top_row_dy = 0;
6851     }
6852   else
6853     {
6854       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6855       tree_view->priv->top_row_dy = offset;
6856     }
6857 }
6858
6859 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6860  * it's set to be NULL, and top_row_dy is 0;
6861  */
6862 static void
6863 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6864 {
6865   gint offset;
6866   GtkTreePath *path;
6867   GtkRBTree *tree;
6868   GtkRBNode *node;
6869
6870   if (tree_view->priv->tree == NULL)
6871     {
6872       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6873     }
6874   else
6875     {
6876       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6877                                         tree_view->priv->dy,
6878                                         &tree, &node);
6879
6880       if (tree == NULL)
6881         {
6882           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6883         }
6884       else
6885         {
6886           path = _gtk_tree_view_find_path (tree_view, tree, node);
6887           gtk_tree_view_set_top_row (tree_view, path, offset);
6888           gtk_tree_path_free (path);
6889         }
6890     }
6891 }
6892
6893 static void
6894 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6895 {
6896   GtkTreePath *path;
6897   GtkRBTree *tree;
6898   GtkRBNode *node;
6899   int new_dy;
6900
6901   /* Avoid recursive calls */
6902   if (tree_view->priv->in_top_row_to_dy)
6903     return;
6904
6905   if (tree_view->priv->top_row)
6906     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6907   else
6908     path = NULL;
6909
6910   if (!path)
6911     tree = NULL;
6912   else
6913     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6914
6915   if (path)
6916     gtk_tree_path_free (path);
6917
6918   if (tree == NULL)
6919     {
6920       /* keep dy and set new toprow */
6921       gtk_tree_row_reference_free (tree_view->priv->top_row);
6922       tree_view->priv->top_row = NULL;
6923       tree_view->priv->top_row_dy = 0;
6924       /* DO NOT install the idle handler */
6925       gtk_tree_view_dy_to_top_row (tree_view);
6926       return;
6927     }
6928
6929   if (gtk_tree_view_get_row_height (tree_view, node)
6930       < tree_view->priv->top_row_dy)
6931     {
6932       /* new top row -- do NOT install the idle handler */
6933       gtk_tree_view_dy_to_top_row (tree_view);
6934       return;
6935     }
6936
6937   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6938   new_dy += tree_view->priv->top_row_dy;
6939
6940   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6941     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6942
6943   new_dy = MAX (0, new_dy);
6944
6945   tree_view->priv->in_top_row_to_dy = TRUE;
6946   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6947   tree_view->priv->in_top_row_to_dy = FALSE;
6948 }
6949
6950
6951 void
6952 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6953                                             gboolean     install_handler)
6954 {
6955   tree_view->priv->mark_rows_col_dirty = TRUE;
6956
6957   if (install_handler)
6958     install_presize_handler (tree_view);
6959 }
6960
6961 /*
6962  * This function works synchronously (due to the while (validate_rows...)
6963  * loop).
6964  *
6965  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6966  * here. You now need to check that yourself.
6967  */
6968 void
6969 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6970                                 GtkTreeViewColumn *column)
6971 {
6972   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6973   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6974
6975   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6976
6977   do_presize_handler (tree_view);
6978   while (validate_rows (tree_view));
6979
6980   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6981 }
6982
6983 /* Drag-and-drop */
6984
6985 static void
6986 set_source_row (GdkDragContext *context,
6987                 GtkTreeModel   *model,
6988                 GtkTreePath    *source_row)
6989 {
6990   g_object_set_data_full (G_OBJECT (context),
6991                           I_("gtk-tree-view-source-row"),
6992                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6993                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6994 }
6995
6996 static GtkTreePath*
6997 get_source_row (GdkDragContext *context)
6998 {
6999   GtkTreeRowReference *ref =
7000     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7001
7002   if (ref)
7003     return gtk_tree_row_reference_get_path (ref);
7004   else
7005     return NULL;
7006 }
7007
7008 typedef struct
7009 {
7010   GtkTreeRowReference *dest_row;
7011   guint                path_down_mode   : 1;
7012   guint                empty_view_drop  : 1;
7013   guint                drop_append_mode : 1;
7014 }
7015 DestRow;
7016
7017 static void
7018 dest_row_free (gpointer data)
7019 {
7020   DestRow *dr = (DestRow *)data;
7021
7022   gtk_tree_row_reference_free (dr->dest_row);
7023   g_slice_free (DestRow, dr);
7024 }
7025
7026 static void
7027 set_dest_row (GdkDragContext *context,
7028               GtkTreeModel   *model,
7029               GtkTreePath    *dest_row,
7030               gboolean        path_down_mode,
7031               gboolean        empty_view_drop,
7032               gboolean        drop_append_mode)
7033 {
7034   DestRow *dr;
7035
7036   if (!dest_row)
7037     {
7038       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7039                               NULL, NULL);
7040       return;
7041     }
7042
7043   dr = g_slice_new (DestRow);
7044
7045   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7046   dr->path_down_mode = path_down_mode != FALSE;
7047   dr->empty_view_drop = empty_view_drop != FALSE;
7048   dr->drop_append_mode = drop_append_mode != FALSE;
7049
7050   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7051                           dr, (GDestroyNotify) dest_row_free);
7052 }
7053
7054 static GtkTreePath*
7055 get_dest_row (GdkDragContext *context,
7056               gboolean       *path_down_mode)
7057 {
7058   DestRow *dr =
7059     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7060
7061   if (dr)
7062     {
7063       GtkTreePath *path = NULL;
7064
7065       if (path_down_mode)
7066         *path_down_mode = dr->path_down_mode;
7067
7068       if (dr->dest_row)
7069         path = gtk_tree_row_reference_get_path (dr->dest_row);
7070       else if (dr->empty_view_drop)
7071         path = gtk_tree_path_new_from_indices (0, -1);
7072       else
7073         path = NULL;
7074
7075       if (path && dr->drop_append_mode)
7076         gtk_tree_path_next (path);
7077
7078       return path;
7079     }
7080   else
7081     return NULL;
7082 }
7083
7084 /* Get/set whether drag_motion requested the drag data and
7085  * drag_data_received should thus not actually insert the data,
7086  * since the data doesn't result from a drop.
7087  */
7088 static void
7089 set_status_pending (GdkDragContext *context,
7090                     GdkDragAction   suggested_action)
7091 {
7092   g_object_set_data (G_OBJECT (context),
7093                      I_("gtk-tree-view-status-pending"),
7094                      GINT_TO_POINTER (suggested_action));
7095 }
7096
7097 static GdkDragAction
7098 get_status_pending (GdkDragContext *context)
7099 {
7100   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7101                                              "gtk-tree-view-status-pending"));
7102 }
7103
7104 static TreeViewDragInfo*
7105 get_info (GtkTreeView *tree_view)
7106 {
7107   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7108 }
7109
7110 static void
7111 destroy_info (TreeViewDragInfo *di)
7112 {
7113   g_slice_free (TreeViewDragInfo, di);
7114 }
7115
7116 static TreeViewDragInfo*
7117 ensure_info (GtkTreeView *tree_view)
7118 {
7119   TreeViewDragInfo *di;
7120
7121   di = get_info (tree_view);
7122
7123   if (di == NULL)
7124     {
7125       di = g_slice_new0 (TreeViewDragInfo);
7126
7127       g_object_set_data_full (G_OBJECT (tree_view),
7128                               I_("gtk-tree-view-drag-info"),
7129                               di,
7130                               (GDestroyNotify) destroy_info);
7131     }
7132
7133   return di;
7134 }
7135
7136 static void
7137 remove_info (GtkTreeView *tree_view)
7138 {
7139   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7140 }
7141
7142 #if 0
7143 static gint
7144 drag_scan_timeout (gpointer data)
7145 {
7146   GtkTreeView *tree_view;
7147   gint x, y;
7148   GdkModifierType state;
7149   GtkTreePath *path = NULL;
7150   GtkTreeViewColumn *column = NULL;
7151   GdkRectangle visible_rect;
7152
7153   GDK_THREADS_ENTER ();
7154
7155   tree_view = GTK_TREE_VIEW (data);
7156
7157   gdk_window_get_pointer (tree_view->priv->bin_window,
7158                           &x, &y, &state);
7159
7160   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7161
7162   /* See if we are near the edge. */
7163   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7164       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7165       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7166       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7167     {
7168       gtk_tree_view_get_path_at_pos (tree_view,
7169                                      tree_view->priv->bin_window,
7170                                      x, y,
7171                                      &path,
7172                                      &column,
7173                                      NULL,
7174                                      NULL);
7175
7176       if (path != NULL)
7177         {
7178           gtk_tree_view_scroll_to_cell (tree_view,
7179                                         path,
7180                                         column,
7181                                         TRUE,
7182                                         0.5, 0.5);
7183
7184           gtk_tree_path_free (path);
7185         }
7186     }
7187
7188   GDK_THREADS_LEAVE ();
7189
7190   return TRUE;
7191 }
7192 #endif /* 0 */
7193
7194 static void
7195 add_scroll_timeout (GtkTreeView *tree_view)
7196 {
7197   if (tree_view->priv->scroll_timeout == 0)
7198     {
7199       tree_view->priv->scroll_timeout =
7200         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7201     }
7202 }
7203
7204 static void
7205 remove_scroll_timeout (GtkTreeView *tree_view)
7206 {
7207   if (tree_view->priv->scroll_timeout != 0)
7208     {
7209       g_source_remove (tree_view->priv->scroll_timeout);
7210       tree_view->priv->scroll_timeout = 0;
7211     }
7212 }
7213
7214 static gboolean
7215 check_model_dnd (GtkTreeModel *model,
7216                  GType         required_iface,
7217                  const gchar  *signal)
7218 {
7219   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7220     {
7221       g_warning ("You must override the default '%s' handler "
7222                  "on GtkTreeView when using models that don't support "
7223                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7224                  "is to connect to '%s' and call "
7225                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7226                  "the default handler from running. Look at the source code "
7227                  "for the default handler in gtktreeview.c to get an idea what "
7228                  "your handler should do. (gtktreeview.c is in the GTK source "
7229                  "code.) If you're using GTK from a language other than C, "
7230                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7231                  signal, g_type_name (required_iface), signal);
7232       return FALSE;
7233     }
7234   else
7235     return TRUE;
7236 }
7237
7238 static void
7239 remove_open_timeout (GtkTreeView *tree_view)
7240 {
7241   if (tree_view->priv->open_dest_timeout != 0)
7242     {
7243       g_source_remove (tree_view->priv->open_dest_timeout);
7244       tree_view->priv->open_dest_timeout = 0;
7245     }
7246 }
7247
7248
7249 static gint
7250 open_row_timeout (gpointer data)
7251 {
7252   GtkTreeView *tree_view = data;
7253   GtkTreePath *dest_path = NULL;
7254   GtkTreeViewDropPosition pos;
7255   gboolean result = FALSE;
7256
7257   gtk_tree_view_get_drag_dest_row (tree_view,
7258                                    &dest_path,
7259                                    &pos);
7260
7261   if (dest_path &&
7262       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7263        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7264     {
7265       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7266       tree_view->priv->open_dest_timeout = 0;
7267
7268       gtk_tree_path_free (dest_path);
7269     }
7270   else
7271     {
7272       if (dest_path)
7273         gtk_tree_path_free (dest_path);
7274
7275       result = TRUE;
7276     }
7277
7278   return result;
7279 }
7280
7281 static gboolean
7282 scroll_row_timeout (gpointer data)
7283 {
7284   GtkTreeView *tree_view = data;
7285
7286   gtk_tree_view_vertical_autoscroll (tree_view);
7287
7288   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7289     gtk_tree_view_update_rubber_band (tree_view);
7290
7291   return TRUE;
7292 }
7293
7294 /* Returns TRUE if event should not be propagated to parent widgets */
7295 static gboolean
7296 set_destination_row (GtkTreeView    *tree_view,
7297                      GdkDragContext *context,
7298                      /* coordinates relative to the widget */
7299                      gint            x,
7300                      gint            y,
7301                      GdkDragAction  *suggested_action,
7302                      GdkAtom        *target)
7303 {
7304   GtkTreePath *path = NULL;
7305   GtkTreeViewDropPosition pos;
7306   GtkTreeViewDropPosition old_pos;
7307   TreeViewDragInfo *di;
7308   GtkWidget *widget;
7309   GtkTreePath *old_dest_path = NULL;
7310   gboolean can_drop = FALSE;
7311
7312   *suggested_action = 0;
7313   *target = GDK_NONE;
7314
7315   widget = GTK_WIDGET (tree_view);
7316
7317   di = get_info (tree_view);
7318
7319   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7320     {
7321       /* someone unset us as a drag dest, note that if
7322        * we return FALSE drag_leave isn't called
7323        */
7324
7325       gtk_tree_view_set_drag_dest_row (tree_view,
7326                                        NULL,
7327                                        GTK_TREE_VIEW_DROP_BEFORE);
7328
7329       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7330       remove_open_timeout (GTK_TREE_VIEW (widget));
7331
7332       return FALSE; /* no longer a drop site */
7333     }
7334
7335   *target = gtk_drag_dest_find_target (widget, context,
7336                                        gtk_drag_dest_get_target_list (widget));
7337   if (*target == GDK_NONE)
7338     {
7339       return FALSE;
7340     }
7341
7342   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7343                                           x, y,
7344                                           &path,
7345                                           &pos))
7346     {
7347       gint n_children;
7348       GtkTreeModel *model;
7349
7350       remove_open_timeout (tree_view);
7351
7352       /* the row got dropped on empty space, let's setup a special case
7353        */
7354
7355       if (path)
7356         gtk_tree_path_free (path);
7357
7358       model = gtk_tree_view_get_model (tree_view);
7359
7360       n_children = gtk_tree_model_iter_n_children (model, NULL);
7361       if (n_children)
7362         {
7363           pos = GTK_TREE_VIEW_DROP_AFTER;
7364           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7365         }
7366       else
7367         {
7368           pos = GTK_TREE_VIEW_DROP_BEFORE;
7369           path = gtk_tree_path_new_from_indices (0, -1);
7370         }
7371
7372       can_drop = TRUE;
7373
7374       goto out;
7375     }
7376
7377   g_assert (path);
7378
7379   /* If we left the current row's "open" zone, unset the timeout for
7380    * opening the row
7381    */
7382   gtk_tree_view_get_drag_dest_row (tree_view,
7383                                    &old_dest_path,
7384                                    &old_pos);
7385
7386   if (old_dest_path &&
7387       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7388        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7389          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7390     remove_open_timeout (tree_view);
7391
7392   if (old_dest_path)
7393     gtk_tree_path_free (old_dest_path);
7394
7395   if (TRUE /* FIXME if the location droppable predicate */)
7396     {
7397       can_drop = TRUE;
7398     }
7399
7400 out:
7401   if (can_drop)
7402     {
7403       GtkWidget *source_widget;
7404
7405       *suggested_action = gdk_drag_context_get_suggested_action (context);
7406       source_widget = gtk_drag_get_source_widget (context);
7407
7408       if (source_widget == widget)
7409         {
7410           /* Default to MOVE, unless the user has
7411            * pressed ctrl or shift to affect available actions
7412            */
7413           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7414             *suggested_action = GDK_ACTION_MOVE;
7415         }
7416
7417       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7418                                        path, pos);
7419     }
7420   else
7421     {
7422       /* can't drop here */
7423       remove_open_timeout (tree_view);
7424
7425       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7426                                        NULL,
7427                                        GTK_TREE_VIEW_DROP_BEFORE);
7428     }
7429
7430   if (path)
7431     gtk_tree_path_free (path);
7432
7433   return TRUE;
7434 }
7435
7436 static GtkTreePath*
7437 get_logical_dest_row (GtkTreeView *tree_view,
7438                       gboolean    *path_down_mode,
7439                       gboolean    *drop_append_mode)
7440 {
7441   /* adjust path to point to the row the drop goes in front of */
7442   GtkTreePath *path = NULL;
7443   GtkTreeViewDropPosition pos;
7444
7445   g_return_val_if_fail (path_down_mode != NULL, NULL);
7446   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7447
7448   *path_down_mode = FALSE;
7449   *drop_append_mode = 0;
7450
7451   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7452
7453   if (path == NULL)
7454     return NULL;
7455
7456   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7457     ; /* do nothing */
7458   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7459            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7460     *path_down_mode = TRUE;
7461   else
7462     {
7463       GtkTreeIter iter;
7464       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7465
7466       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7467
7468       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7469           !gtk_tree_model_iter_next (model, &iter))
7470         *drop_append_mode = 1;
7471       else
7472         {
7473           *drop_append_mode = 0;
7474           gtk_tree_path_next (path);
7475         }
7476     }
7477
7478   return path;
7479 }
7480
7481 static gboolean
7482 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7483                                         GdkEventMotion   *event)
7484 {
7485   GtkWidget *widget = GTK_WIDGET (tree_view);
7486   GdkDragContext *context;
7487   TreeViewDragInfo *di;
7488   GtkTreePath *path = NULL;
7489   gint button;
7490   gint cell_x, cell_y;
7491   GtkTreeModel *model;
7492   gboolean retval = FALSE;
7493
7494   di = get_info (tree_view);
7495
7496   if (di == NULL || !di->source_set)
7497     goto out;
7498
7499   if (tree_view->priv->pressed_button < 0)
7500     goto out;
7501
7502   if (!gtk_drag_check_threshold (widget,
7503                                  tree_view->priv->press_start_x,
7504                                  tree_view->priv->press_start_y,
7505                                  event->x, event->y))
7506     goto out;
7507
7508   model = gtk_tree_view_get_model (tree_view);
7509
7510   if (model == NULL)
7511     goto out;
7512
7513   button = tree_view->priv->pressed_button;
7514   tree_view->priv->pressed_button = -1;
7515
7516   gtk_tree_view_get_path_at_pos (tree_view,
7517                                  tree_view->priv->press_start_x,
7518                                  tree_view->priv->press_start_y,
7519                                  &path,
7520                                  NULL,
7521                                  &cell_x,
7522                                  &cell_y);
7523
7524   if (path == NULL)
7525     goto out;
7526
7527   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7528       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7529                                            path))
7530     goto out;
7531
7532   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7533     goto out;
7534
7535   /* Now we can begin the drag */
7536
7537   retval = TRUE;
7538
7539   context = gtk_drag_begin (widget,
7540                             gtk_drag_source_get_target_list (widget),
7541                             di->source_actions,
7542                             button,
7543                             (GdkEvent*)event);
7544
7545   set_source_row (context, model, path);
7546
7547  out:
7548   if (path)
7549     gtk_tree_path_free (path);
7550
7551   return retval;
7552 }
7553
7554
7555 static void
7556 gtk_tree_view_drag_begin (GtkWidget      *widget,
7557                           GdkDragContext *context)
7558 {
7559   GtkTreeView *tree_view;
7560   GtkTreePath *path = NULL;
7561   gint cell_x, cell_y;
7562   cairo_surface_t *row_pix;
7563   TreeViewDragInfo *di;
7564
7565   tree_view = GTK_TREE_VIEW (widget);
7566
7567   /* if the user uses a custom DND source impl, we don't set the icon here */
7568   di = get_info (tree_view);
7569
7570   if (di == NULL || !di->source_set)
7571     return;
7572
7573   gtk_tree_view_get_path_at_pos (tree_view,
7574                                  tree_view->priv->press_start_x,
7575                                  tree_view->priv->press_start_y,
7576                                  &path,
7577                                  NULL,
7578                                  &cell_x,
7579                                  &cell_y);
7580
7581   g_return_if_fail (path != NULL);
7582
7583   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7584                                                 path);
7585   cairo_surface_set_device_offset (row_pix,
7586                                    /* the + 1 is for the black border in the icon */
7587                                    - (tree_view->priv->press_start_x + 1),
7588                                    - (cell_y + 1));
7589
7590   gtk_drag_set_icon_surface (context, row_pix);
7591
7592   cairo_surface_destroy (row_pix);
7593   gtk_tree_path_free (path);
7594 }
7595
7596 static void
7597 gtk_tree_view_drag_end (GtkWidget      *widget,
7598                         GdkDragContext *context)
7599 {
7600   /* do nothing */
7601 }
7602
7603 /* Default signal implementations for the drag signals */
7604 static void
7605 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7606                              GdkDragContext   *context,
7607                              GtkSelectionData *selection_data,
7608                              guint             info,
7609                              guint             time)
7610 {
7611   GtkTreeView *tree_view;
7612   GtkTreeModel *model;
7613   TreeViewDragInfo *di;
7614   GtkTreePath *source_row;
7615
7616   tree_view = GTK_TREE_VIEW (widget);
7617
7618   model = gtk_tree_view_get_model (tree_view);
7619
7620   if (model == NULL)
7621     return;
7622
7623   di = get_info (GTK_TREE_VIEW (widget));
7624
7625   if (di == NULL)
7626     return;
7627
7628   source_row = get_source_row (context);
7629
7630   if (source_row == NULL)
7631     return;
7632
7633   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7634    * any model; for DragSource models there are some other targets
7635    * we also support.
7636    */
7637
7638   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7639       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7640                                           source_row,
7641                                           selection_data))
7642     goto done;
7643
7644   /* If drag_data_get does nothing, try providing row data. */
7645   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7646     {
7647       gtk_tree_set_row_drag_data (selection_data,
7648                                   model,
7649                                   source_row);
7650     }
7651
7652  done:
7653   gtk_tree_path_free (source_row);
7654 }
7655
7656
7657 static void
7658 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7659                                 GdkDragContext *context)
7660 {
7661   TreeViewDragInfo *di;
7662   GtkTreeModel *model;
7663   GtkTreeView *tree_view;
7664   GtkTreePath *source_row;
7665
7666   tree_view = GTK_TREE_VIEW (widget);
7667   model = gtk_tree_view_get_model (tree_view);
7668
7669   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7670     return;
7671
7672   di = get_info (tree_view);
7673
7674   if (di == NULL)
7675     return;
7676
7677   source_row = get_source_row (context);
7678
7679   if (source_row == NULL)
7680     return;
7681
7682   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7683                                          source_row);
7684
7685   gtk_tree_path_free (source_row);
7686
7687   set_source_row (context, NULL, NULL);
7688 }
7689
7690 static void
7691 gtk_tree_view_drag_leave (GtkWidget      *widget,
7692                           GdkDragContext *context,
7693                           guint             time)
7694 {
7695   /* unset any highlight row */
7696   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7697                                    NULL,
7698                                    GTK_TREE_VIEW_DROP_BEFORE);
7699
7700   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7701   remove_open_timeout (GTK_TREE_VIEW (widget));
7702 }
7703
7704
7705 static gboolean
7706 gtk_tree_view_drag_motion (GtkWidget        *widget,
7707                            GdkDragContext   *context,
7708                            /* coordinates relative to the widget */
7709                            gint              x,
7710                            gint              y,
7711                            guint             time)
7712 {
7713   gboolean empty;
7714   GtkTreePath *path = NULL;
7715   GtkTreeViewDropPosition pos;
7716   GtkTreeView *tree_view;
7717   GdkDragAction suggested_action = 0;
7718   GdkAtom target;
7719
7720   tree_view = GTK_TREE_VIEW (widget);
7721
7722   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7723     return FALSE;
7724
7725   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7726
7727   /* we only know this *after* set_desination_row */
7728   empty = tree_view->priv->empty_view_drop;
7729
7730   if (path == NULL && !empty)
7731     {
7732       /* Can't drop here. */
7733       gdk_drag_status (context, 0, time);
7734     }
7735   else
7736     {
7737       if (tree_view->priv->open_dest_timeout == 0 &&
7738           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7739            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7740         {
7741           tree_view->priv->open_dest_timeout =
7742             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7743         }
7744       else
7745         {
7746           add_scroll_timeout (tree_view);
7747         }
7748
7749       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7750         {
7751           /* Request data so we can use the source row when
7752            * determining whether to accept the drop
7753            */
7754           set_status_pending (context, suggested_action);
7755           gtk_drag_get_data (widget, context, target, time);
7756         }
7757       else
7758         {
7759           set_status_pending (context, 0);
7760           gdk_drag_status (context, suggested_action, time);
7761         }
7762     }
7763
7764   if (path)
7765     gtk_tree_path_free (path);
7766
7767   return TRUE;
7768 }
7769
7770
7771 static gboolean
7772 gtk_tree_view_drag_drop (GtkWidget        *widget,
7773                          GdkDragContext   *context,
7774                          /* coordinates relative to the widget */
7775                          gint              x,
7776                          gint              y,
7777                          guint             time)
7778 {
7779   GtkTreeView *tree_view;
7780   GtkTreePath *path;
7781   GdkDragAction suggested_action = 0;
7782   GdkAtom target = GDK_NONE;
7783   TreeViewDragInfo *di;
7784   GtkTreeModel *model;
7785   gboolean path_down_mode;
7786   gboolean drop_append_mode;
7787
7788   tree_view = GTK_TREE_VIEW (widget);
7789
7790   model = gtk_tree_view_get_model (tree_view);
7791
7792   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7793   remove_open_timeout (GTK_TREE_VIEW (widget));
7794
7795   di = get_info (tree_view);
7796
7797   if (di == NULL)
7798     return FALSE;
7799
7800   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7801     return FALSE;
7802
7803   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7804     return FALSE;
7805
7806   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7807
7808   if (target != GDK_NONE && path != NULL)
7809     {
7810       /* in case a motion had requested drag data, change things so we
7811        * treat drag data receives as a drop.
7812        */
7813       set_status_pending (context, 0);
7814       set_dest_row (context, model, path,
7815                     path_down_mode, tree_view->priv->empty_view_drop,
7816                     drop_append_mode);
7817     }
7818
7819   if (path)
7820     gtk_tree_path_free (path);
7821
7822   /* Unset this thing */
7823   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7824                                    NULL,
7825                                    GTK_TREE_VIEW_DROP_BEFORE);
7826
7827   if (target != GDK_NONE)
7828     {
7829       gtk_drag_get_data (widget, context, target, time);
7830       return TRUE;
7831     }
7832   else
7833     return FALSE;
7834 }
7835
7836 static void
7837 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7838                                   GdkDragContext   *context,
7839                                   /* coordinates relative to the widget */
7840                                   gint              x,
7841                                   gint              y,
7842                                   GtkSelectionData *selection_data,
7843                                   guint             info,
7844                                   guint             time)
7845 {
7846   GtkTreePath *path;
7847   TreeViewDragInfo *di;
7848   gboolean accepted = FALSE;
7849   GtkTreeModel *model;
7850   GtkTreeView *tree_view;
7851   GtkTreePath *dest_row;
7852   GdkDragAction suggested_action;
7853   gboolean path_down_mode;
7854   gboolean drop_append_mode;
7855
7856   tree_view = GTK_TREE_VIEW (widget);
7857
7858   model = gtk_tree_view_get_model (tree_view);
7859
7860   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7861     return;
7862
7863   di = get_info (tree_view);
7864
7865   if (di == NULL)
7866     return;
7867
7868   suggested_action = get_status_pending (context);
7869
7870   if (suggested_action)
7871     {
7872       /* We are getting this data due to a request in drag_motion,
7873        * rather than due to a request in drag_drop, so we are just
7874        * supposed to call drag_status, not actually paste in the
7875        * data.
7876        */
7877       path = get_logical_dest_row (tree_view, &path_down_mode,
7878                                    &drop_append_mode);
7879
7880       if (path == NULL)
7881         suggested_action = 0;
7882       else if (path_down_mode)
7883         gtk_tree_path_down (path);
7884
7885       if (suggested_action)
7886         {
7887           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7888                                                      path,
7889                                                      selection_data))
7890             {
7891               if (path_down_mode)
7892                 {
7893                   path_down_mode = FALSE;
7894                   gtk_tree_path_up (path);
7895
7896                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7897                                                              path,
7898                                                              selection_data))
7899                     suggested_action = 0;
7900                 }
7901               else
7902                 suggested_action = 0;
7903             }
7904         }
7905
7906       gdk_drag_status (context, suggested_action, time);
7907
7908       if (path)
7909         gtk_tree_path_free (path);
7910
7911       /* If you can't drop, remove user drop indicator until the next motion */
7912       if (suggested_action == 0)
7913         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7914                                          NULL,
7915                                          GTK_TREE_VIEW_DROP_BEFORE);
7916
7917       return;
7918     }
7919
7920   dest_row = get_dest_row (context, &path_down_mode);
7921
7922   if (dest_row == NULL)
7923     return;
7924
7925   if (gtk_selection_data_get_length (selection_data) >= 0)
7926     {
7927       if (path_down_mode)
7928         {
7929           gtk_tree_path_down (dest_row);
7930           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7931                                                      dest_row, selection_data))
7932             gtk_tree_path_up (dest_row);
7933         }
7934     }
7935
7936   if (gtk_selection_data_get_length (selection_data) >= 0)
7937     {
7938       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7939                                                  dest_row,
7940                                                  selection_data))
7941         accepted = TRUE;
7942     }
7943
7944   gtk_drag_finish (context,
7945                    accepted,
7946                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7947                    time);
7948
7949   if (gtk_tree_path_get_depth (dest_row) == 1
7950       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7951     {
7952       /* special special case drag to "0", scroll to first item */
7953       if (!tree_view->priv->scroll_to_path)
7954         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7955     }
7956
7957   gtk_tree_path_free (dest_row);
7958
7959   /* drop dest_row */
7960   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7961 }
7962
7963
7964
7965 /* GtkContainer Methods
7966  */
7967
7968
7969 static void
7970 gtk_tree_view_remove (GtkContainer *container,
7971                       GtkWidget    *widget)
7972 {
7973   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7974   GtkTreeViewChild *child = NULL;
7975   GList *tmp_list;
7976
7977   tmp_list = tree_view->priv->children;
7978   while (tmp_list)
7979     {
7980       child = tmp_list->data;
7981       if (child->widget == widget)
7982         {
7983           gtk_widget_unparent (widget);
7984
7985           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7986           g_list_free_1 (tmp_list);
7987           g_slice_free (GtkTreeViewChild, child);
7988           return;
7989         }
7990
7991       tmp_list = tmp_list->next;
7992     }
7993
7994   tmp_list = tree_view->priv->columns;
7995
7996   while (tmp_list)
7997     {
7998       GtkTreeViewColumn *column;
7999       GtkWidget         *button;
8000
8001       column = tmp_list->data;
8002       button = gtk_tree_view_column_get_button (column);
8003
8004       if (button == widget)
8005         {
8006           gtk_widget_unparent (widget);
8007           return;
8008         }
8009       tmp_list = tmp_list->next;
8010     }
8011 }
8012
8013 static void
8014 gtk_tree_view_forall (GtkContainer *container,
8015                       gboolean      include_internals,
8016                       GtkCallback   callback,
8017                       gpointer      callback_data)
8018 {
8019   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8020   GtkTreeViewChild *child = NULL;
8021   GtkTreeViewColumn *column;
8022   GtkWidget *button;
8023   GList *tmp_list;
8024
8025   tmp_list = tree_view->priv->children;
8026   while (tmp_list)
8027     {
8028       child = tmp_list->data;
8029       tmp_list = tmp_list->next;
8030
8031       (* callback) (child->widget, callback_data);
8032     }
8033   if (include_internals == FALSE)
8034     return;
8035
8036   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8037     {
8038       column = tmp_list->data;
8039       button = gtk_tree_view_column_get_button (column);
8040
8041       if (button)
8042         (* callback) (button, callback_data);
8043     }
8044 }
8045
8046 /* Returns TRUE is any of the columns contains a cell that can-focus.
8047  * If this is not the case, a column-spanning focus rectangle will be
8048  * drawn.
8049  */
8050 static gboolean
8051 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8052 {
8053   GList *list;
8054
8055   for (list = tree_view->priv->columns; list; list = list->next)
8056     {
8057       GtkTreeViewColumn *column = list->data;
8058
8059       if (!gtk_tree_view_column_get_visible (column))
8060         continue;
8061       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8062         return TRUE;
8063     }
8064
8065   return FALSE;
8066 }
8067
8068 static void
8069 column_sizing_notify (GObject    *object,
8070                       GParamSpec *pspec,
8071                       gpointer    data)
8072 {
8073   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8074
8075   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8076     /* disable fixed height mode */
8077     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8078 }
8079
8080 /**
8081  * gtk_tree_view_set_fixed_height_mode:
8082  * @tree_view: a #GtkTreeView
8083  * @enable: %TRUE to enable fixed height mode
8084  *
8085  * Enables or disables the fixed height mode of @tree_view.
8086  * Fixed height mode speeds up #GtkTreeView by assuming that all
8087  * rows have the same height.
8088  * Only enable this option if all rows are the same height and all
8089  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8090  *
8091  * Since: 2.6
8092  **/
8093 void
8094 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8095                                      gboolean     enable)
8096 {
8097   GList *l;
8098
8099   enable = enable != FALSE;
8100
8101   if (enable == tree_view->priv->fixed_height_mode)
8102     return;
8103
8104   if (!enable)
8105     {
8106       tree_view->priv->fixed_height_mode = 0;
8107       tree_view->priv->fixed_height = -1;
8108
8109       /* force a revalidation */
8110       install_presize_handler (tree_view);
8111     }
8112   else
8113     {
8114       /* make sure all columns are of type FIXED */
8115       for (l = tree_view->priv->columns; l; l = l->next)
8116         {
8117           GtkTreeViewColumn *c = l->data;
8118
8119           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8120         }
8121
8122       /* yes, we really have to do this is in a separate loop */
8123       for (l = tree_view->priv->columns; l; l = l->next)
8124         g_signal_connect (l->data, "notify::sizing",
8125                           G_CALLBACK (column_sizing_notify), tree_view);
8126
8127       tree_view->priv->fixed_height_mode = 1;
8128       tree_view->priv->fixed_height = -1;
8129
8130       if (tree_view->priv->tree)
8131         initialize_fixed_height_mode (tree_view);
8132     }
8133
8134   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8135 }
8136
8137 /**
8138  * gtk_tree_view_get_fixed_height_mode:
8139  * @tree_view: a #GtkTreeView
8140  *
8141  * Returns whether fixed height mode is turned on for @tree_view.
8142  *
8143  * Return value: %TRUE if @tree_view is in fixed height mode
8144  *
8145  * Since: 2.6
8146  **/
8147 gboolean
8148 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8149 {
8150   return tree_view->priv->fixed_height_mode;
8151 }
8152
8153 /* Returns TRUE if the focus is within the headers, after the focus operation is
8154  * done
8155  */
8156 static gboolean
8157 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8158                             GtkDirectionType  dir,
8159                             gboolean          clamp_column_visible)
8160 {
8161   GtkTreeViewColumn *column;
8162   GtkWidget *focus_child;
8163   GtkWidget *button;
8164   GList *last_column, *first_column;
8165   GList *tmp_list;
8166   gboolean rtl;
8167
8168   if (! tree_view->priv->headers_visible)
8169     return FALSE;
8170
8171   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8172
8173   first_column = tree_view->priv->columns;
8174   while (first_column)
8175     {
8176       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8177       button = gtk_tree_view_column_get_button (column);
8178
8179       if (gtk_widget_get_can_focus (button) &&
8180           gtk_tree_view_column_get_visible (column) &&
8181           (gtk_tree_view_column_get_clickable (column) ||
8182            gtk_tree_view_column_get_reorderable (column)))
8183         break;
8184       first_column = first_column->next;
8185     }
8186
8187   /* No headers are visible, or are focusable.  We can't focus in or out.
8188    */
8189   if (first_column == NULL)
8190     return FALSE;
8191
8192   last_column = g_list_last (tree_view->priv->columns);
8193   while (last_column)
8194     {
8195       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8196       button = gtk_tree_view_column_get_button (column);
8197
8198       if (gtk_widget_get_can_focus (button) &&
8199           gtk_tree_view_column_get_visible (column) &&
8200           (gtk_tree_view_column_get_clickable (column) ||
8201            gtk_tree_view_column_get_reorderable (column)))
8202         break;
8203       last_column = last_column->prev;
8204     }
8205
8206
8207   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8208
8209   switch (dir)
8210     {
8211     case GTK_DIR_TAB_BACKWARD:
8212     case GTK_DIR_TAB_FORWARD:
8213     case GTK_DIR_UP:
8214     case GTK_DIR_DOWN:
8215       if (focus_child == NULL)
8216         {
8217           if (tree_view->priv->focus_column != NULL)
8218             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8219           else
8220             button = NULL;
8221
8222           if (button && gtk_widget_get_can_focus (button))
8223             focus_child = button;
8224           else
8225             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8226
8227           gtk_widget_grab_focus (focus_child);
8228           break;
8229         }
8230       return FALSE;
8231
8232     case GTK_DIR_LEFT:
8233     case GTK_DIR_RIGHT:
8234       if (focus_child == NULL)
8235         {
8236           if (tree_view->priv->focus_column != NULL)
8237             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8238           else if (dir == GTK_DIR_LEFT)
8239             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8240           else
8241             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8242
8243           gtk_widget_grab_focus (focus_child);
8244           break;
8245         }
8246
8247       if (gtk_widget_child_focus (focus_child, dir))
8248         {
8249           /* The focus moves inside the button. */
8250           /* This is probably a great example of bad UI */
8251           break;
8252         }
8253
8254       /* We need to move the focus among the row of buttons. */
8255       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8256         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8257           break;
8258
8259       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8260           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8261         {
8262           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8263           break;
8264         }
8265
8266       while (tmp_list)
8267         {
8268           GtkTreeViewColumn *column;
8269           GtkWidget         *button;
8270
8271           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8272             tmp_list = tmp_list->next;
8273           else
8274             tmp_list = tmp_list->prev;
8275
8276           if (tmp_list == NULL)
8277             {
8278               g_warning ("Internal button not found");
8279               break;
8280             }
8281           column = tmp_list->data;
8282           button = gtk_tree_view_column_get_button (column);
8283           if (button &&
8284               gtk_tree_view_column_get_visible (column) &&
8285               gtk_widget_get_can_focus (button))
8286             {
8287               focus_child = button;
8288               gtk_widget_grab_focus (button);
8289               break;
8290             }
8291         }
8292       break;
8293     default:
8294       g_assert_not_reached ();
8295       break;
8296     }
8297
8298   /* if focus child is non-null, we assume it's been set to the current focus child
8299    */
8300   if (focus_child)
8301     {
8302       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8303         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8304           {
8305             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8306             break;
8307           }
8308
8309       if (clamp_column_visible)
8310         {
8311           gtk_tree_view_clamp_column_visible (tree_view,
8312                                               tree_view->priv->focus_column,
8313                                               FALSE);
8314         }
8315     }
8316
8317   return (focus_child != NULL);
8318 }
8319
8320 /* This function returns in 'path' the first focusable path, if the given path
8321  * is already focusable, it's the returned one.
8322  */
8323 static gboolean
8324 search_first_focusable_path (GtkTreeView  *tree_view,
8325                              GtkTreePath **path,
8326                              gboolean      search_forward,
8327                              GtkRBTree   **new_tree,
8328                              GtkRBNode   **new_node)
8329 {
8330   GtkRBTree *tree = NULL;
8331   GtkRBNode *node = NULL;
8332
8333   if (!path || !*path)
8334     return FALSE;
8335
8336   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8337
8338   if (!tree || !node)
8339     return FALSE;
8340
8341   while (node && row_is_separator (tree_view, NULL, *path))
8342     {
8343       if (search_forward)
8344         _gtk_rbtree_next_full (tree, node, &tree, &node);
8345       else
8346         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8347
8348       if (*path)
8349         gtk_tree_path_free (*path);
8350
8351       if (node)
8352         *path = _gtk_tree_view_find_path (tree_view, tree, node);
8353       else
8354         *path = NULL;
8355     }
8356
8357   if (new_tree)
8358     *new_tree = tree;
8359
8360   if (new_node)
8361     *new_node = node;
8362
8363   return (*path != NULL);
8364 }
8365
8366 static gint
8367 gtk_tree_view_focus (GtkWidget        *widget,
8368                      GtkDirectionType  direction)
8369 {
8370   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8371   GtkContainer *container = GTK_CONTAINER (widget);
8372   GtkWidget *focus_child;
8373
8374   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8375     return FALSE;
8376
8377   focus_child = gtk_container_get_focus_child (container);
8378
8379   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8380   /* Case 1.  Headers currently have focus. */
8381   if (focus_child)
8382     {
8383       switch (direction)
8384         {
8385         case GTK_DIR_LEFT:
8386         case GTK_DIR_RIGHT:
8387           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8388           return TRUE;
8389         case GTK_DIR_TAB_BACKWARD:
8390         case GTK_DIR_UP:
8391           return FALSE;
8392         case GTK_DIR_TAB_FORWARD:
8393         case GTK_DIR_DOWN:
8394           gtk_widget_grab_focus (widget);
8395           return TRUE;
8396         default:
8397           g_assert_not_reached ();
8398           return FALSE;
8399         }
8400     }
8401
8402   /* Case 2. We don't have focus at all. */
8403   if (!gtk_widget_has_focus (widget))
8404     {
8405       gtk_widget_grab_focus (widget);
8406       return TRUE;
8407     }
8408
8409   /* Case 3. We have focus already. */
8410   if (direction == GTK_DIR_TAB_BACKWARD)
8411     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8412   else if (direction == GTK_DIR_TAB_FORWARD)
8413     return FALSE;
8414
8415   /* Other directions caught by the keybindings */
8416   gtk_widget_grab_focus (widget);
8417   return TRUE;
8418 }
8419
8420 static void
8421 gtk_tree_view_grab_focus (GtkWidget *widget)
8422 {
8423   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8424
8425   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8426 }
8427
8428 static void
8429 gtk_tree_view_style_updated (GtkWidget *widget)
8430 {
8431   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8432   GList *list;
8433   GtkTreeViewColumn *column;
8434
8435   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8436
8437   if (gtk_widget_get_realized (widget))
8438     {
8439       GtkStyleContext *context;
8440
8441       context = gtk_widget_get_style_context (widget);
8442
8443       gtk_style_context_save (context);
8444       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
8445       gtk_style_context_set_background (context, tree_view->priv->bin_window);
8446       gtk_style_context_restore (context);
8447
8448       gtk_style_context_set_background (context, tree_view->priv->header_window);
8449
8450       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8451       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8452     }
8453
8454   gtk_widget_style_get (widget,
8455                         "expander-size", &tree_view->priv->expander_size,
8456                         NULL);
8457   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8458
8459   for (list = tree_view->priv->columns; list; list = list->next)
8460     {
8461       column = list->data;
8462       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8463     }
8464
8465   tree_view->priv->fixed_height = -1;
8466   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8467
8468   gtk_widget_queue_resize (widget);
8469 }
8470
8471
8472 static void
8473 gtk_tree_view_set_focus_child (GtkContainer *container,
8474                                GtkWidget    *child)
8475 {
8476   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8477   GList *list;
8478
8479   for (list = tree_view->priv->columns; list; list = list->next)
8480     {
8481       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8482         {
8483           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8484           break;
8485         }
8486     }
8487
8488   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8489 }
8490
8491 static GtkWidgetPath *
8492 gtk_tree_view_get_path_for_child (GtkContainer *container,
8493                                   GtkWidget    *child)
8494 {
8495   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8496   GtkWidgetPath *path;
8497   gboolean rtl;
8498   GList *list;
8499   gint n_col = 0;
8500
8501   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8502   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8503
8504   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8505        list;
8506        list = (rtl ? list->prev : list->next))
8507     {
8508       GtkTreeViewColumn *column = list->data;
8509       GtkRegionFlags flags = 0;
8510
8511       if (!gtk_tree_view_column_get_visible (column))
8512         continue;
8513
8514       n_col++;
8515
8516       if (gtk_tree_view_column_get_widget (column) != child &&
8517           gtk_tree_view_column_get_button (column) != child)
8518         continue;
8519
8520       if ((n_col % 2) == 0)
8521         flags |= GTK_REGION_EVEN;
8522       else
8523         flags |= GTK_REGION_ODD;
8524
8525       if (n_col == 1)
8526         flags |= GTK_REGION_FIRST;
8527
8528       if ((rtl && !list->prev) ||
8529           (!rtl && !list->next))
8530         flags |= GTK_REGION_LAST;
8531
8532       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8533       break;
8534     }
8535
8536   gtk_widget_path_append_for_widget (path, child);
8537
8538   return path;
8539 }
8540
8541 static gboolean
8542 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8543                                 GtkMovementStep    step,
8544                                 gint               count)
8545 {
8546   GdkModifierType state;
8547
8548   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8549   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8550                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8551                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8552                         step == GTK_MOVEMENT_PAGES ||
8553                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8554
8555   if (tree_view->priv->tree == NULL)
8556     return FALSE;
8557   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8558     return FALSE;
8559
8560   gtk_tree_view_stop_editing (tree_view, FALSE);
8561   tree_view->priv->draw_keyfocus = TRUE;
8562   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8563
8564   if (gtk_get_current_event_state (&state))
8565     {
8566       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8567         tree_view->priv->ctrl_pressed = TRUE;
8568       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8569         tree_view->priv->shift_pressed = TRUE;
8570     }
8571   /* else we assume not pressed */
8572
8573   switch (step)
8574     {
8575       /* currently we make no distinction.  When we go bi-di, we need to */
8576     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8577     case GTK_MOVEMENT_VISUAL_POSITIONS:
8578       gtk_tree_view_move_cursor_left_right (tree_view, count);
8579       break;
8580     case GTK_MOVEMENT_DISPLAY_LINES:
8581       gtk_tree_view_move_cursor_up_down (tree_view, count);
8582       break;
8583     case GTK_MOVEMENT_PAGES:
8584       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8585       break;
8586     case GTK_MOVEMENT_BUFFER_ENDS:
8587       gtk_tree_view_move_cursor_start_end (tree_view, count);
8588       break;
8589     default:
8590       g_assert_not_reached ();
8591     }
8592
8593   tree_view->priv->ctrl_pressed = FALSE;
8594   tree_view->priv->shift_pressed = FALSE;
8595
8596   return TRUE;
8597 }
8598
8599 static void
8600 gtk_tree_view_put (GtkTreeView *tree_view,
8601                    GtkWidget   *child_widget,
8602                    /* in bin_window coordinates */
8603                    gint         x,
8604                    gint         y,
8605                    gint         width,
8606                    gint         height)
8607 {
8608   GtkTreeViewChild *child;
8609
8610   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8611   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8612
8613   child = g_slice_new (GtkTreeViewChild);
8614
8615   child->widget = child_widget;
8616   child->x = x;
8617   child->y = y;
8618   child->width = width;
8619   child->height = height;
8620
8621   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8622
8623   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8624     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8625
8626   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8627 }
8628
8629 void
8630 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8631                                   GtkWidget   *widget,
8632                                   /* in tree coordinates */
8633                                   gint         x,
8634                                   gint         y,
8635                                   gint         width,
8636                                   gint         height)
8637 {
8638   GtkTreeViewChild *child = NULL;
8639   GList *list;
8640   GdkRectangle allocation;
8641
8642   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8643   g_return_if_fail (GTK_IS_WIDGET (widget));
8644
8645   for (list = tree_view->priv->children; list; list = list->next)
8646     {
8647       if (((GtkTreeViewChild *)list->data)->widget == widget)
8648         {
8649           child = list->data;
8650           break;
8651         }
8652     }
8653   if (child == NULL)
8654     return;
8655
8656   allocation.x = child->x = x;
8657   allocation.y = child->y = y;
8658   allocation.width = child->width = width;
8659   allocation.height = child->height = height;
8660
8661   if (gtk_widget_get_realized (widget))
8662     gtk_widget_size_allocate (widget, &allocation);
8663 }
8664
8665
8666 /* TreeModel Callbacks
8667  */
8668
8669 static void
8670 gtk_tree_view_row_changed (GtkTreeModel *model,
8671                            GtkTreePath  *path,
8672                            GtkTreeIter  *iter,
8673                            gpointer      data)
8674 {
8675   GtkTreeView *tree_view = (GtkTreeView *)data;
8676   GtkRBTree *tree;
8677   GtkRBNode *node;
8678   gboolean free_path = FALSE;
8679   GList *list;
8680   GtkTreePath *cursor_path;
8681
8682   g_return_if_fail (path != NULL || iter != NULL);
8683
8684   if (tree_view->priv->cursor != NULL)
8685     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8686   else
8687     cursor_path = NULL;
8688
8689   if (tree_view->priv->edited_column &&
8690       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8691     gtk_tree_view_stop_editing (tree_view, TRUE);
8692
8693   if (cursor_path != NULL)
8694     gtk_tree_path_free (cursor_path);
8695
8696   if (path == NULL)
8697     {
8698       path = gtk_tree_model_get_path (model, iter);
8699       free_path = TRUE;
8700     }
8701   else if (iter == NULL)
8702     gtk_tree_model_get_iter (model, iter, path);
8703
8704   if (_gtk_tree_view_find_node (tree_view,
8705                                 path,
8706                                 &tree,
8707                                 &node))
8708     /* We aren't actually showing the node */
8709     goto done;
8710
8711   if (tree == NULL)
8712     goto done;
8713
8714   if (tree_view->priv->fixed_height_mode
8715       && tree_view->priv->fixed_height >= 0)
8716     {
8717       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8718       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8719         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8720     }
8721   else
8722     {
8723       _gtk_rbtree_node_mark_invalid (tree, node);
8724       for (list = tree_view->priv->columns; list; list = list->next)
8725         {
8726           GtkTreeViewColumn *column;
8727
8728           column = list->data;
8729           if (!gtk_tree_view_column_get_visible (column))
8730             continue;
8731
8732           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8733             {
8734               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8735             }
8736         }
8737     }
8738
8739  done:
8740   if (!tree_view->priv->fixed_height_mode &&
8741       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8742     install_presize_handler (tree_view);
8743   if (free_path)
8744     gtk_tree_path_free (path);
8745 }
8746
8747 static void
8748 gtk_tree_view_row_inserted (GtkTreeModel *model,
8749                             GtkTreePath  *path,
8750                             GtkTreeIter  *iter,
8751                             gpointer      data)
8752 {
8753   GtkTreeView *tree_view = (GtkTreeView *) data;
8754   gint *indices;
8755   GtkRBTree *tmptree, *tree;
8756   GtkRBNode *tmpnode = NULL;
8757   gint depth;
8758   gint i = 0;
8759   gint height;
8760   gboolean free_path = FALSE;
8761   gboolean node_visible = TRUE;
8762
8763   g_return_if_fail (path != NULL || iter != NULL);
8764
8765   if (tree_view->priv->fixed_height_mode
8766       && tree_view->priv->fixed_height >= 0)
8767     height = tree_view->priv->fixed_height;
8768   else
8769     height = 0;
8770
8771   if (path == NULL)
8772     {
8773       path = gtk_tree_model_get_path (model, iter);
8774       free_path = TRUE;
8775     }
8776   else if (iter == NULL)
8777     gtk_tree_model_get_iter (model, iter, path);
8778
8779   if (tree_view->priv->tree == NULL)
8780     tree_view->priv->tree = _gtk_rbtree_new ();
8781
8782   tmptree = tree = tree_view->priv->tree;
8783
8784   /* Update all row-references */
8785   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8786   depth = gtk_tree_path_get_depth (path);
8787   indices = gtk_tree_path_get_indices (path);
8788
8789   /* First, find the parent tree */
8790   while (i < depth - 1)
8791     {
8792       if (tmptree == NULL)
8793         {
8794           /* We aren't showing the node */
8795           node_visible = FALSE;
8796           goto done;
8797         }
8798
8799       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8800       if (tmpnode == NULL)
8801         {
8802           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8803                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8804                      "before the parent was inserted.");
8805           goto done;
8806         }
8807       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8808         {
8809           /* FIXME enforce correct behavior on model, probably */
8810           /* In theory, the model should have emitted has_child_toggled here.  We
8811            * try to catch it anyway, just to be safe, in case the model hasn't.
8812            */
8813           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8814                                                            tree,
8815                                                            tmpnode);
8816           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8817           gtk_tree_path_free (tmppath);
8818           goto done;
8819         }
8820
8821       tmptree = tmpnode->children;
8822       tree = tmptree;
8823       i++;
8824     }
8825
8826   if (tree == NULL)
8827     {
8828       node_visible = FALSE;
8829       goto done;
8830     }
8831
8832   /* ref the node */
8833   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8834   if (indices[depth - 1] == 0)
8835     {
8836       tmpnode = _gtk_rbtree_find_count (tree, 1);
8837       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8838     }
8839   else
8840     {
8841       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8842       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8843     }
8844
8845  done:
8846   if (height > 0)
8847     {
8848       if (tree)
8849         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8850
8851       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8852         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8853       else
8854         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8855     }
8856   else
8857     install_presize_handler (tree_view);
8858   if (free_path)
8859     gtk_tree_path_free (path);
8860 }
8861
8862 static void
8863 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8864                                      GtkTreePath  *path,
8865                                      GtkTreeIter  *iter,
8866                                      gpointer      data)
8867 {
8868   GtkTreeView *tree_view = (GtkTreeView *)data;
8869   GtkTreeIter real_iter;
8870   gboolean has_child;
8871   GtkRBTree *tree;
8872   GtkRBNode *node;
8873   gboolean free_path = FALSE;
8874
8875   g_return_if_fail (path != NULL || iter != NULL);
8876
8877   if (iter)
8878     real_iter = *iter;
8879
8880   if (path == NULL)
8881     {
8882       path = gtk_tree_model_get_path (model, iter);
8883       free_path = TRUE;
8884     }
8885   else if (iter == NULL)
8886     gtk_tree_model_get_iter (model, &real_iter, path);
8887
8888   if (_gtk_tree_view_find_node (tree_view,
8889                                 path,
8890                                 &tree,
8891                                 &node))
8892     /* We aren't actually showing the node */
8893     goto done;
8894
8895   if (tree == NULL)
8896     goto done;
8897
8898   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8899   /* Sanity check.
8900    */
8901   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8902     goto done;
8903
8904   if (has_child)
8905     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8906   else
8907     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8908
8909   if (has_child && tree_view->priv->is_list)
8910     {
8911       tree_view->priv->is_list = FALSE;
8912       if (tree_view->priv->show_expanders)
8913         {
8914           GList *list;
8915
8916           for (list = tree_view->priv->columns; list; list = list->next)
8917             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8918               {
8919                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8920                 break;
8921               }
8922         }
8923       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8924     }
8925   else
8926     {
8927       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8928     }
8929
8930  done:
8931   if (free_path)
8932     gtk_tree_path_free (path);
8933 }
8934
8935 static void
8936 count_children_helper (GtkRBTree *tree,
8937                        GtkRBNode *node,
8938                        gpointer   data)
8939 {
8940   if (node->children)
8941     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8942   (*((gint *)data))++;
8943 }
8944
8945 static void
8946 check_selection_helper (GtkRBTree *tree,
8947                         GtkRBNode *node,
8948                         gpointer   data)
8949 {
8950   gint *value = (gint *)data;
8951
8952   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8953
8954   if (node->children && !*value)
8955     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8956 }
8957
8958 static void
8959 gtk_tree_view_row_deleted (GtkTreeModel *model,
8960                            GtkTreePath  *path,
8961                            gpointer      data)
8962 {
8963   GtkTreeView *tree_view = (GtkTreeView *)data;
8964   GtkRBTree *tree;
8965   GtkRBNode *node;
8966   GList *list;
8967   gint selection_changed = FALSE;
8968   GtkStyleContext *context;
8969
8970   g_return_if_fail (path != NULL);
8971
8972   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8973
8974   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8975     return;
8976
8977   if (tree == NULL)
8978     return;
8979
8980   /* check if the selection has been changed */
8981   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8982                         check_selection_helper, &selection_changed);
8983
8984   for (list = tree_view->priv->columns; list; list = list->next)
8985     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
8986         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8987       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8988
8989   /* Ensure we don't have a dangling pointer to a dead node */
8990   ensure_unprelighted (tree_view);
8991
8992   /* Cancel editting if we've started */
8993   gtk_tree_view_stop_editing (tree_view, TRUE);
8994
8995   if (tree_view->priv->destroy_count_func)
8996     {
8997       gint child_count = 0;
8998       if (node->children)
8999         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9000       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9001     }
9002
9003   if (tree->root->count == 1)
9004     {
9005       if (tree_view->priv->tree == tree)
9006         tree_view->priv->tree = NULL;
9007
9008       _gtk_rbtree_remove (tree);
9009     }
9010   else
9011     {
9012       _gtk_rbtree_remove_node (tree, node);
9013     }
9014
9015   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9016     {
9017       gtk_tree_row_reference_free (tree_view->priv->top_row);
9018       tree_view->priv->top_row = NULL;
9019     }
9020
9021   /* Cancel any ongoing animation happening within the row */
9022   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9023   gtk_style_context_cancel_animations (context, node);
9024
9025   install_scroll_sync_handler (tree_view);
9026
9027   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9028
9029   if (selection_changed)
9030     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9031 }
9032
9033 static void
9034 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9035                               GtkTreePath  *parent,
9036                               GtkTreeIter  *iter,
9037                               gint         *new_order,
9038                               gpointer      data)
9039 {
9040   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9041   GtkRBTree *tree;
9042   GtkRBNode *node;
9043   gint len;
9044
9045   len = gtk_tree_model_iter_n_children (model, iter);
9046
9047   if (len < 2)
9048     return;
9049
9050   gtk_tree_row_reference_reordered (G_OBJECT (data),
9051                                     parent,
9052                                     iter,
9053                                     new_order);
9054
9055   if (_gtk_tree_view_find_node (tree_view,
9056                                 parent,
9057                                 &tree,
9058                                 &node))
9059     return;
9060
9061   /* We need to special case the parent path */
9062   if (tree == NULL)
9063     tree = tree_view->priv->tree;
9064   else
9065     tree = node->children;
9066
9067   if (tree == NULL)
9068     return;
9069
9070   if (tree_view->priv->edited_column)
9071     gtk_tree_view_stop_editing (tree_view, TRUE);
9072
9073   /* we need to be unprelighted */
9074   ensure_unprelighted (tree_view);
9075
9076   _gtk_rbtree_reorder (tree, new_order, len);
9077
9078   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9079
9080   gtk_tree_view_dy_to_top_row (tree_view);
9081 }
9082
9083
9084 /* Internal tree functions
9085  */
9086
9087
9088 static void
9089 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9090                                      GtkRBTree         *tree,
9091                                      GtkTreeViewColumn *column,
9092                                      gint              *x1,
9093                                      gint              *x2)
9094 {
9095   GtkTreeViewColumn *tmp_column = NULL;
9096   gint total_width;
9097   GList *list;
9098   gboolean rtl;
9099
9100   if (x1)
9101     *x1 = 0;
9102
9103   if (x2)
9104     *x2 = 0;
9105
9106   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9107
9108   total_width = 0;
9109   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9110        list;
9111        list = (rtl ? list->prev : list->next))
9112     {
9113       tmp_column = list->data;
9114
9115       if (tmp_column == column)
9116         break;
9117
9118       if (gtk_tree_view_column_get_visible (tmp_column))
9119         total_width += gtk_tree_view_column_get_width (tmp_column);
9120     }
9121
9122   if (tmp_column != column)
9123     {
9124       g_warning (G_STRLOC": passed-in column isn't in the tree");
9125       return;
9126     }
9127
9128   if (x1)
9129     *x1 = total_width;
9130
9131   if (x2)
9132     {
9133       if (gtk_tree_view_column_get_visible (column))
9134         *x2 = total_width + gtk_tree_view_column_get_width (column);
9135       else
9136         *x2 = total_width; /* width of 0 */
9137     }
9138 }
9139
9140 static void
9141 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9142                                 GtkRBTree   *tree,
9143                                 gint        *x1,
9144                                 gint        *x2)
9145 {
9146   gint x_offset = 0;
9147   GList *list;
9148   GtkTreeViewColumn *tmp_column = NULL;
9149   gint total_width;
9150   gboolean indent_expanders;
9151   gboolean rtl;
9152
9153   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9154
9155   total_width = 0;
9156   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9157        list;
9158        list = (rtl ? list->prev : list->next))
9159     {
9160       tmp_column = list->data;
9161
9162       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9163         {
9164           if (rtl)
9165             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9166           else
9167             x_offset = total_width;
9168           break;
9169         }
9170
9171       if (gtk_tree_view_column_get_visible (tmp_column))
9172         total_width += gtk_tree_view_column_get_width (tmp_column);
9173     }
9174
9175   gtk_widget_style_get (GTK_WIDGET (tree_view),
9176                         "indent-expanders", &indent_expanders,
9177                         NULL);
9178
9179   if (indent_expanders)
9180     {
9181       if (rtl)
9182         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9183       else
9184         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9185     }
9186
9187   *x1 = x_offset;
9188
9189   if (tmp_column &&
9190       gtk_tree_view_column_get_visible (tmp_column))
9191     /* +1 because x2 isn't included in the range. */
9192     *x2 = *x1 + tree_view->priv->expander_size + 1;
9193   else
9194     *x2 = *x1;
9195 }
9196
9197 static void
9198 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9199                           GtkRBTree   *tree,
9200                           GtkTreeIter *iter,
9201                           gint         depth,
9202                           gboolean     recurse)
9203 {
9204   GtkRBNode *temp = NULL;
9205   GtkTreePath *path = NULL;
9206
9207   do
9208     {
9209       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9210       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9211
9212       if (tree_view->priv->fixed_height > 0)
9213         {
9214           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9215             {
9216               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9217               _gtk_rbtree_node_mark_valid (tree, temp);
9218             }
9219         }
9220
9221       if (tree_view->priv->is_list)
9222         continue;
9223
9224       if (recurse)
9225         {
9226           GtkTreeIter child;
9227
9228           if (!path)
9229             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9230           else
9231             gtk_tree_path_next (path);
9232
9233           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9234             {
9235               gboolean expand;
9236
9237               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9238
9239               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9240                   && !expand)
9241                 {
9242                   temp->children = _gtk_rbtree_new ();
9243                   temp->children->parent_tree = tree;
9244                   temp->children->parent_node = temp;
9245                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9246                 }
9247             }
9248         }
9249
9250       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9251         {
9252           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9253             temp->flags ^= GTK_RBNODE_IS_PARENT;
9254         }
9255     }
9256   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9257
9258   if (path)
9259     gtk_tree_path_free (path);
9260 }
9261
9262 /* Make sure the node is visible vertically */
9263 static void
9264 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9265                                   GtkRBTree   *tree,
9266                                   GtkRBNode   *node)
9267 {
9268   gint node_dy, height;
9269   GtkTreePath *path = NULL;
9270
9271   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9272     return;
9273
9274   /* just return if the node is visible, avoiding a costly expose */
9275   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9276   height = gtk_tree_view_get_row_height (tree_view, node);
9277   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9278       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9279       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9280                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9281     return;
9282
9283   path = _gtk_tree_view_find_path (tree_view, tree, node);
9284   if (path)
9285     {
9286       /* We process updates because we want to clear old selected items when we scroll.
9287        * if this is removed, we get a "selection streak" at the bottom. */
9288       gtk_tree_view_bin_process_updates (tree_view);
9289
9290       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9291       gtk_tree_path_free (path);
9292     }
9293 }
9294
9295 static void
9296 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9297                                     GtkTreeViewColumn *column,
9298                                     gboolean           focus_to_cell)
9299 {
9300   GtkAllocation allocation;
9301   gint x, width;
9302
9303   if (column == NULL)
9304     return;
9305
9306   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9307   x = allocation.x;
9308   width = allocation.width;
9309
9310   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9311     {
9312       /* The column is larger than the horizontal page size.  If the
9313        * column has cells which can be focussed individually, then we make
9314        * sure the cell which gets focus is fully visible (if even the
9315        * focus cell is bigger than the page size, we make sure the
9316        * left-hand side of the cell is visible).
9317        *
9318        * If the column does not have an activatable cell, we
9319        * make sure the left-hand side of the column is visible.
9320        */
9321
9322       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9323         {
9324           GtkCellArea *cell_area;
9325           GtkCellRenderer *focus_cell;
9326
9327           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9328           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9329
9330           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9331                                                       &x, &width))
9332             {
9333               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9334                 {
9335                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9336                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9337                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9338                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9339                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9340                 }
9341             }
9342         }
9343
9344       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9345     }
9346   else
9347     {
9348       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9349           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9350                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9351       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9352         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9353   }
9354 }
9355
9356 /* This function could be more efficient.  I'll optimize it if profiling seems
9357  * to imply that it is important */
9358 GtkTreePath *
9359 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9360                           GtkRBTree   *tree,
9361                           GtkRBNode   *node)
9362 {
9363   GtkTreePath *path;
9364   GtkRBTree *tmp_tree;
9365   GtkRBNode *tmp_node, *last;
9366   gint count;
9367
9368   path = gtk_tree_path_new ();
9369
9370   g_return_val_if_fail (node != NULL, path);
9371   g_return_val_if_fail (node != tree->nil, path);
9372
9373   count = 1 + node->left->count;
9374
9375   last = node;
9376   tmp_node = node->parent;
9377   tmp_tree = tree;
9378   while (tmp_tree)
9379     {
9380       while (tmp_node != tmp_tree->nil)
9381         {
9382           if (tmp_node->right == last)
9383             count += 1 + tmp_node->left->count;
9384           last = tmp_node;
9385           tmp_node = tmp_node->parent;
9386         }
9387       gtk_tree_path_prepend_index (path, count - 1);
9388       last = tmp_tree->parent_node;
9389       tmp_tree = tmp_tree->parent_tree;
9390       if (last)
9391         {
9392           count = 1 + last->left->count;
9393           tmp_node = last->parent;
9394         }
9395     }
9396   return path;
9397 }
9398
9399 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9400  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9401  * both set to NULL.
9402  */
9403 gboolean
9404 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9405                           GtkTreePath  *path,
9406                           GtkRBTree   **tree,
9407                           GtkRBNode   **node)
9408 {
9409   GtkRBNode *tmpnode = NULL;
9410   GtkRBTree *tmptree = tree_view->priv->tree;
9411   gint *indices = gtk_tree_path_get_indices (path);
9412   gint depth = gtk_tree_path_get_depth (path);
9413   gint i = 0;
9414
9415   *node = NULL;
9416   *tree = NULL;
9417
9418   if (depth == 0 || tmptree == NULL)
9419     return FALSE;
9420   do
9421     {
9422       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9423       ++i;
9424       if (tmpnode == NULL)
9425         {
9426           *tree = NULL;
9427           *node = NULL;
9428           return FALSE;
9429         }
9430       if (i >= depth)
9431         {
9432           *tree = tmptree;
9433           *node = tmpnode;
9434           return FALSE;
9435         }
9436       *tree = tmptree;
9437       *node = tmpnode;
9438       tmptree = tmpnode->children;
9439       if (tmptree == NULL)
9440         return TRUE;
9441     }
9442   while (1);
9443 }
9444
9445 static gboolean
9446 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9447                                   GtkTreeViewColumn *column)
9448 {
9449   GList *list;
9450
9451   if (tree_view->priv->is_list)
9452     return FALSE;
9453
9454   if (tree_view->priv->expander_column != NULL)
9455     {
9456       if (tree_view->priv->expander_column == column)
9457         return TRUE;
9458       return FALSE;
9459     }
9460   else
9461     {
9462       for (list = tree_view->priv->columns;
9463            list;
9464            list = list->next)
9465         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9466           break;
9467       if (list && list->data == column)
9468         return TRUE;
9469     }
9470   return FALSE;
9471 }
9472
9473 static inline gboolean
9474 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9475 {
9476   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9477     return TRUE;
9478   /* else */
9479   return FALSE;
9480 }
9481
9482 static void
9483 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9484                                 guint           keyval,
9485                                 guint           modmask,
9486                                 gboolean        add_shifted_binding,
9487                                 GtkMovementStep step,
9488                                 gint            count)
9489 {
9490
9491   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9492                                 "move-cursor", 2,
9493                                 G_TYPE_ENUM, step,
9494                                 G_TYPE_INT, count);
9495
9496   if (add_shifted_binding)
9497     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9498                                   "move-cursor", 2,
9499                                   G_TYPE_ENUM, step,
9500                                   G_TYPE_INT, count);
9501
9502   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9503    return;
9504
9505   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9506                                 "move-cursor", 2,
9507                                 G_TYPE_ENUM, step,
9508                                 G_TYPE_INT, count);
9509
9510   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9511                                 "move-cursor", 2,
9512                                 G_TYPE_ENUM, step,
9513                                 G_TYPE_INT, count);
9514 }
9515
9516 static gint
9517 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9518                                  GtkTreeIter  *iter,
9519                                  GtkRBTree    *tree,
9520                                  GtkRBNode    *node)
9521 {
9522   gint retval = FALSE;
9523   do
9524     {
9525       g_return_val_if_fail (node != NULL, FALSE);
9526
9527       if (node->children)
9528         {
9529           GtkTreeIter child;
9530           GtkRBTree *new_tree;
9531           GtkRBNode *new_node;
9532
9533           new_tree = node->children;
9534           new_node = new_tree->root;
9535
9536           while (new_node && new_node->left != new_tree->nil)
9537             new_node = new_node->left;
9538
9539           if (!gtk_tree_model_iter_children (model, &child, iter))
9540             return FALSE;
9541
9542           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9543         }
9544
9545       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9546         retval = TRUE;
9547       gtk_tree_model_unref_node (model, iter);
9548       node = _gtk_rbtree_next (tree, node);
9549     }
9550   while (gtk_tree_model_iter_next (model, iter));
9551
9552   return retval;
9553 }
9554
9555 static gint
9556 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9557                                               GtkRBTree   *tree)
9558 {
9559   GtkTreeIter iter;
9560   GtkTreePath *path;
9561   GtkRBNode *node;
9562   gint retval;
9563
9564   if (!tree)
9565     return FALSE;
9566
9567   node = tree->root;
9568   while (node && node->left != tree->nil)
9569     node = node->left;
9570
9571   g_return_val_if_fail (node != NULL, FALSE);
9572   path = _gtk_tree_view_find_path (tree_view, tree, node);
9573   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9574                            &iter, path);
9575   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9576   gtk_tree_path_free (path);
9577
9578   return retval;
9579 }
9580
9581 static void
9582 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9583                                     GtkTreeViewColumn *column)
9584 {
9585   GtkTreeViewColumn *left_column;
9586   GtkTreeViewColumn *cur_column = NULL;
9587   GtkTreeViewColumnReorder *reorder;
9588   gboolean rtl;
9589   GList *tmp_list;
9590   gint left;
9591
9592   /* We want to precalculate the motion list such that we know what column slots
9593    * are available.
9594    */
9595   left_column = NULL;
9596   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9597
9598   /* First, identify all possible drop spots */
9599   if (rtl)
9600     tmp_list = g_list_last (tree_view->priv->columns);
9601   else
9602     tmp_list = g_list_first (tree_view->priv->columns);
9603
9604   while (tmp_list)
9605     {
9606       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9607       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9608
9609       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9610         continue;
9611
9612       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9613       if (left_column != column && cur_column != column &&
9614           tree_view->priv->column_drop_func &&
9615           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9616         {
9617           left_column = cur_column;
9618           continue;
9619         }
9620       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9621       reorder->left_column = left_column;
9622       left_column = reorder->right_column = cur_column;
9623
9624       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9625     }
9626
9627   /* Add the last one */
9628   if (tree_view->priv->column_drop_func == NULL ||
9629       ((left_column != column) &&
9630        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9631     {
9632       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9633       reorder->left_column = left_column;
9634       reorder->right_column = NULL;
9635       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9636     }
9637
9638   /* We quickly check to see if it even makes sense to reorder columns. */
9639   /* If there is nothing that can be moved, then we return */
9640
9641   if (tree_view->priv->column_drag_info == NULL)
9642     return;
9643
9644   /* We know there are always 2 slots possbile, as you can always return column. */
9645   /* If that's all there is, return */
9646   if (tree_view->priv->column_drag_info->next == NULL ||
9647       (tree_view->priv->column_drag_info->next->next == NULL &&
9648        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9649        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9650     {
9651       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9652         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9653       g_list_free (tree_view->priv->column_drag_info);
9654       tree_view->priv->column_drag_info = NULL;
9655       return;
9656     }
9657   /* We fill in the ranges for the columns, now that we've isolated them */
9658   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9659
9660   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9661     {
9662       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9663
9664       reorder->left_align = left;
9665       if (tmp_list->next != NULL)
9666         {
9667           GtkAllocation right_allocation, left_allocation;
9668           GtkWidget    *left_button, *right_button;
9669
9670           g_assert (tmp_list->next->data);
9671
9672           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9673           left_button  = gtk_tree_view_column_get_button
9674             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9675
9676           gtk_widget_get_allocation (right_button, &right_allocation);
9677           gtk_widget_get_allocation (left_button, &left_allocation);
9678           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9679         }
9680       else
9681         {
9682           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9683                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9684         }
9685     }
9686 }
9687
9688 void
9689 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9690                                   GtkTreeViewColumn *column,
9691                                   GdkDevice         *device)
9692 {
9693   GdkEvent *send_event;
9694   GtkAllocation allocation;
9695   GtkAllocation button_allocation;
9696   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9697   GtkWidget *button;
9698   GdkDevice *pointer, *keyboard;
9699
9700   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9701   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9702
9703   gtk_tree_view_set_column_drag_info (tree_view, column);
9704
9705   if (tree_view->priv->column_drag_info == NULL)
9706     return;
9707
9708   button = gtk_tree_view_column_get_button (column);
9709
9710   if (tree_view->priv->drag_window == NULL)
9711     {
9712       GdkWindowAttr attributes;
9713       guint attributes_mask;
9714
9715       gtk_widget_get_allocation (button, &button_allocation);
9716
9717       attributes.window_type = GDK_WINDOW_CHILD;
9718       attributes.wclass = GDK_INPUT_OUTPUT;
9719       attributes.x = button_allocation.x;
9720       attributes.y = 0;
9721       attributes.width = button_allocation.width;
9722       attributes.height = button_allocation.height;
9723       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9724       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9725       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9726
9727       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9728                                                      &attributes,
9729                                                      attributes_mask);
9730       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9731     }
9732
9733   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9734     {
9735       keyboard = device;
9736       pointer = gdk_device_get_associated_device (device);
9737     }
9738   else
9739     {
9740       pointer = device;
9741       keyboard = gdk_device_get_associated_device (device);
9742     }
9743
9744   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9745   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9746
9747   gtk_grab_remove (button);
9748
9749   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9750   send_event->crossing.send_event = TRUE;
9751   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9752   send_event->crossing.subwindow = NULL;
9753   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9754   send_event->crossing.time = GDK_CURRENT_TIME;
9755   gdk_event_set_device (send_event, device);
9756
9757   gtk_propagate_event (button, send_event);
9758   gdk_event_free (send_event);
9759
9760   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9761   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9762   send_event->button.send_event = TRUE;
9763   send_event->button.time = GDK_CURRENT_TIME;
9764   send_event->button.x = -1;
9765   send_event->button.y = -1;
9766   send_event->button.axes = NULL;
9767   send_event->button.state = 0;
9768   send_event->button.button = 1;
9769   send_event->button.x_root = 0;
9770   send_event->button.y_root = 0;
9771   gdk_event_set_device (send_event, device);
9772
9773   gtk_propagate_event (button, send_event);
9774   gdk_event_free (send_event);
9775
9776   /* Kids, don't try this at home */
9777   g_object_ref (button);
9778   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9779   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9780   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9781   g_object_unref (button);
9782
9783   gtk_widget_get_allocation (button, &button_allocation);
9784   tree_view->priv->drag_column_x = button_allocation.x;
9785   allocation = button_allocation;
9786   allocation.x = 0;
9787   gtk_widget_size_allocate (button, &allocation);
9788   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9789
9790   tree_view->priv->drag_column = column;
9791   gdk_window_show (tree_view->priv->drag_window);
9792
9793   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9794   while (gtk_events_pending ())
9795     gtk_main_iteration ();
9796
9797   tree_view->priv->in_column_drag = TRUE;
9798
9799   gdk_device_grab (pointer,
9800                    tree_view->priv->drag_window,
9801                    GDK_OWNERSHIP_NONE,
9802                    FALSE,
9803                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9804                    NULL,
9805                    GDK_CURRENT_TIME);
9806   gdk_device_grab (keyboard,
9807                    tree_view->priv->drag_window,
9808                    GDK_OWNERSHIP_NONE,
9809                    FALSE,
9810                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9811                    NULL,
9812                    GDK_CURRENT_TIME);
9813 }
9814
9815 static void
9816 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9817                                 GtkRBTree          *tree,
9818                                 GtkRBNode          *node)
9819 {
9820   GtkAllocation allocation;
9821   GdkRectangle rect;
9822
9823   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9824     return;
9825
9826   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9827   rect.x = 0;
9828   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9829
9830   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9831   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9832
9833   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9834 }
9835
9836 void
9837 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9838                                 GtkRBTree          *tree,
9839                                 GtkRBNode          *node,
9840                                 const GdkRectangle *clip_rect)
9841 {
9842   GtkAllocation allocation;
9843   GdkRectangle rect;
9844
9845   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9846     return;
9847
9848   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9849   rect.x = 0;
9850   rect.width = MAX (tree_view->priv->width, allocation.width);
9851
9852   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9853   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9854
9855   if (clip_rect)
9856     {
9857       GdkRectangle new_rect;
9858
9859       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9860
9861       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9862     }
9863   else
9864     {
9865       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9866     }
9867 }
9868
9869 static inline gint
9870 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9871 {
9872   if (tree_view->priv->headers_visible)
9873     return tree_view->priv->header_height;
9874   /* else */
9875   return 0;
9876 }
9877
9878 gint
9879 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9880 {
9881   return tree_view->priv->header_height;
9882 }
9883
9884 void
9885 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9886                                        GtkTreeViewRowSeparatorFunc *func,
9887                                        gpointer                    *data)
9888 {
9889   *func = tree_view->priv->row_separator_func;
9890   *data = tree_view->priv->row_separator_data;
9891 }
9892
9893 GtkTreePath *
9894 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9895 {
9896   if (tree_view->priv->anchor)
9897     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9898
9899   return NULL;
9900 }
9901
9902 void
9903 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9904                                 GtkTreePath *anchor_path)
9905 {
9906   if (tree_view->priv->anchor)
9907     {
9908       gtk_tree_row_reference_free (tree_view->priv->anchor);
9909       tree_view->priv->anchor = NULL;
9910     }
9911
9912   if (anchor_path && tree_view->priv->model)
9913     tree_view->priv->anchor =
9914       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9915                                         tree_view->priv->model, anchor_path);
9916 }
9917
9918 GtkRBTree *
9919 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9920 {
9921   return tree_view->priv->tree;
9922 }
9923
9924 GdkWindow *
9925 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
9926 {
9927   return tree_view->priv->header_window;
9928 }
9929
9930 void
9931 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
9932                                  GtkTreeViewColumn *column)
9933 {
9934   tree_view->priv->focus_column = column;
9935 }
9936
9937
9938 static void
9939 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9940                                GtkTreePath        *path,
9941                                const GdkRectangle *clip_rect)
9942 {
9943   GtkRBTree *tree = NULL;
9944   GtkRBNode *node = NULL;
9945
9946   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9947
9948   if (tree)
9949     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9950 }
9951
9952 /* x and y are the mouse position
9953  */
9954 static void
9955 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9956                           cairo_t     *cr,
9957                           GtkRBTree   *tree,
9958                           GtkRBNode   *node,
9959                           /* in bin_window coordinates */
9960                           gint         x,
9961                           gint         y)
9962 {
9963   GdkRectangle area;
9964   GtkStateFlags state = 0;
9965   GtkStyleContext *context;
9966   GtkWidget *widget;
9967   gint x_offset = 0;
9968   gint x2;
9969   gint vertical_separator;
9970   gint expander_size;
9971   GtkCellRendererState flags;
9972
9973   widget = GTK_WIDGET (tree_view);
9974   context = gtk_widget_get_style_context (widget);
9975
9976   gtk_widget_style_get (widget,
9977                         "vertical-separator", &vertical_separator,
9978                         NULL);
9979   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9980
9981   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9982     return;
9983
9984   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9985
9986   area.x = x_offset;
9987   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
9988                                                  vertical_separator);
9989   area.width = expander_size;
9990   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
9991                                                     vertical_separator);
9992
9993   if (!gtk_widget_get_sensitive (widget))
9994     state |= GTK_STATE_FLAG_INSENSITIVE;
9995   else
9996     {
9997       flags = 0;
9998
9999       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10000         flags |= GTK_CELL_RENDERER_SELECTED;
10001
10002       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10003
10004       if (node == tree_view->priv->button_pressed_node &&
10005           x >= area.x && x <= (area.x + area.width) &&
10006           y >= area.y && y <= (area.y + area.height))
10007         state |= GTK_STATE_FLAG_FOCUSED;
10008
10009       if (node == tree_view->priv->prelight_node &&
10010           tree_view->priv->arrow_prelit)
10011         state |= GTK_STATE_FLAG_PRELIGHT;
10012     }
10013
10014   if (node->children != NULL)
10015     state |= GTK_STATE_FLAG_ACTIVE;
10016
10017   gtk_style_context_save (context);
10018
10019   gtk_style_context_set_state (context, state);
10020   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10021
10022   gtk_style_context_push_animatable_region (context, node);
10023
10024   gtk_render_expander (context, cr,
10025                        area.x, area.y,
10026                        area.width, area.height);
10027
10028   gtk_style_context_pop_animatable_region (context);
10029   gtk_style_context_restore (context);
10030 }
10031
10032 static void
10033 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10034
10035 {
10036   GtkTreePath *cursor_path;
10037
10038   if ((tree_view->priv->tree == NULL) ||
10039       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10040     return;
10041
10042   cursor_path = NULL;
10043   if (tree_view->priv->cursor)
10044     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10045
10046   if (cursor_path == NULL)
10047     {
10048       /* Consult the selection before defaulting to the
10049        * first focusable element
10050        */
10051       GList *selected_rows;
10052       GtkTreeModel *model;
10053       GtkTreeSelection *selection;
10054
10055       selection = gtk_tree_view_get_selection (tree_view);
10056       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10057
10058       if (selected_rows)
10059         {
10060           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10061           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10062           g_list_free (selected_rows);
10063         }
10064       else
10065         {
10066           cursor_path = gtk_tree_path_new_first ();
10067           search_first_focusable_path (tree_view, &cursor_path,
10068                                        TRUE, NULL, NULL);
10069         }
10070
10071       gtk_tree_row_reference_free (tree_view->priv->cursor);
10072       tree_view->priv->cursor = NULL;
10073
10074       if (cursor_path)
10075         {
10076           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10077             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
10078           else
10079             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10080         }
10081     }
10082
10083   if (cursor_path)
10084     {
10085       tree_view->priv->draw_keyfocus = TRUE;
10086
10087       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10088       gtk_tree_path_free (cursor_path);
10089
10090       if (tree_view->priv->focus_column == NULL)
10091         {
10092           GList *list;
10093           for (list = tree_view->priv->columns; list; list = list->next)
10094             {
10095               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10096                 {
10097                   GtkCellArea *cell_area;
10098
10099                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10100
10101                   /* This happens when the treeview initially grabs focus and there
10102                    * is no column in focus, here we explicitly focus into the first cell */
10103                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10104                   if (!gtk_cell_area_get_focus_cell (cell_area))
10105                     {
10106                       gboolean rtl;
10107
10108                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10109                       gtk_cell_area_focus (cell_area,
10110                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10111                     }
10112
10113                   break;
10114                 }
10115             }
10116         }
10117     }
10118 }
10119
10120 static void
10121 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10122                                    gint         count)
10123 {
10124   gint selection_count;
10125   GtkRBTree *cursor_tree = NULL;
10126   GtkRBNode *cursor_node = NULL;
10127   GtkRBTree *new_cursor_tree = NULL;
10128   GtkRBNode *new_cursor_node = NULL;
10129   GtkTreePath *cursor_path = NULL;
10130   gboolean grab_focus = TRUE;
10131   gboolean selectable;
10132   GtkDirectionType direction;
10133   GtkCellArea *cell_area = NULL;
10134   GtkCellRenderer *last_focus_cell = NULL;
10135   GtkTreeIter iter;
10136
10137   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10138     return;
10139
10140   cursor_path = NULL;
10141   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
10142     /* FIXME: we lost the cursor; should we get the first? */
10143     return;
10144
10145   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10146   _gtk_tree_view_find_node (tree_view, cursor_path,
10147                             &cursor_tree, &cursor_node);
10148
10149   if (cursor_tree == NULL)
10150     /* FIXME: we lost the cursor; should we get the first? */
10151     return;
10152
10153   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10154
10155   if (tree_view->priv->focus_column)
10156     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10157
10158   /* If focus stays in the area for this row, then just return for this round */
10159   if (cell_area && (count == -1 || count == 1) &&
10160       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10161     {
10162       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10163                                                tree_view->priv->model,
10164                                                &iter,
10165                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10166                                                cursor_node->children?TRUE:FALSE);
10167
10168       /* Save the last cell that had focus, if we hit the end of the view we'll give
10169        * focus back to it. */
10170       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10171
10172       /* If focus stays in the area, no need to change the cursor row */
10173       if (gtk_cell_area_focus (cell_area, direction))
10174         return;
10175     }
10176
10177   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10178   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10179                                                       cursor_node,
10180                                                       cursor_path);
10181
10182   if (selection_count == 0
10183       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10184       && !tree_view->priv->ctrl_pressed
10185       && selectable)
10186     {
10187       /* Don't move the cursor, but just select the current node */
10188       new_cursor_tree = cursor_tree;
10189       new_cursor_node = cursor_node;
10190     }
10191   else
10192     {
10193       if (count == -1)
10194         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10195                                &new_cursor_tree, &new_cursor_node);
10196       else
10197         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10198                                &new_cursor_tree, &new_cursor_node);
10199     }
10200
10201   gtk_tree_path_free (cursor_path);
10202
10203   if (new_cursor_node)
10204     {
10205       cursor_path = _gtk_tree_view_find_path (tree_view,
10206                                               new_cursor_tree, new_cursor_node);
10207
10208       search_first_focusable_path (tree_view, &cursor_path,
10209                                    (count != -1),
10210                                    &new_cursor_tree,
10211                                    &new_cursor_node);
10212
10213       if (cursor_path)
10214         gtk_tree_path_free (cursor_path);
10215     }
10216
10217   /*
10218    * If the list has only one item and multi-selection is set then select
10219    * the row (if not yet selected).
10220    */
10221   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10222       new_cursor_node == NULL)
10223     {
10224       if (count == -1)
10225         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10226                                &new_cursor_tree, &new_cursor_node);
10227       else
10228         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10229                                &new_cursor_tree, &new_cursor_node);
10230
10231       if (new_cursor_node == NULL
10232           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
10233         {
10234           new_cursor_node = cursor_node;
10235           new_cursor_tree = cursor_tree;
10236         }
10237       else
10238         {
10239           new_cursor_node = NULL;
10240         }
10241     }
10242
10243   if (new_cursor_node)
10244     {
10245       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
10246       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10247       gtk_tree_path_free (cursor_path);
10248
10249       /* Give focus to the area in the new row */
10250       if (cell_area)
10251         gtk_cell_area_focus (cell_area, direction);
10252     }
10253   else
10254     {
10255       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10256
10257       if (!tree_view->priv->shift_pressed)
10258         {
10259           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10260                                           count < 0 ?
10261                                           GTK_DIR_UP : GTK_DIR_DOWN))
10262             {
10263               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10264
10265               if (toplevel)
10266                 gtk_widget_child_focus (toplevel,
10267                                         count < 0 ?
10268                                         GTK_DIR_TAB_BACKWARD :
10269                                         GTK_DIR_TAB_FORWARD);
10270
10271               grab_focus = FALSE;
10272             }
10273         }
10274       else
10275         {
10276           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10277         }
10278
10279       if (cell_area)
10280         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10281     }
10282
10283   if (grab_focus)
10284     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10285 }
10286
10287 static void
10288 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10289                                         gint         count)
10290 {
10291   GtkRBTree *cursor_tree = NULL;
10292   GtkRBNode *cursor_node = NULL;
10293   GtkTreePath *old_cursor_path = NULL;
10294   GtkTreePath *cursor_path = NULL;
10295   GtkRBTree *start_cursor_tree = NULL;
10296   GtkRBNode *start_cursor_node = NULL;
10297   gint y;
10298   gint window_y;
10299   gint vertical_separator;
10300
10301   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10302     return;
10303
10304   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10305     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10306   else
10307     /* This is sorta weird.  Focus in should give us a cursor */
10308     return;
10309
10310   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10311   _gtk_tree_view_find_node (tree_view, old_cursor_path,
10312                             &cursor_tree, &cursor_node);
10313
10314   if (cursor_tree == NULL)
10315     {
10316       /* FIXME: we lost the cursor.  Should we try to get one? */
10317       gtk_tree_path_free (old_cursor_path);
10318       return;
10319     }
10320   g_return_if_fail (cursor_node != NULL);
10321
10322   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10323   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10324   y += tree_view->priv->cursor_offset;
10325   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10326   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10327
10328   if (y >= tree_view->priv->height)
10329     y = tree_view->priv->height - 1;
10330
10331   tree_view->priv->cursor_offset =
10332     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10333                              &cursor_tree, &cursor_node);
10334
10335   if (cursor_tree == NULL)
10336     {
10337       /* FIXME: we lost the cursor.  Should we try to get one? */
10338       gtk_tree_path_free (old_cursor_path);
10339       return;
10340     }
10341
10342   if (tree_view->priv->cursor_offset
10343       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10344     {
10345       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10346                              &cursor_tree, &cursor_node);
10347       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10348     }
10349
10350   y -= tree_view->priv->cursor_offset;
10351   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10352
10353   start_cursor_tree = cursor_tree;
10354   start_cursor_node = cursor_node;
10355
10356   if (! search_first_focusable_path (tree_view, &cursor_path,
10357                                      (count != -1),
10358                                      &cursor_tree, &cursor_node))
10359     {
10360       /* It looks like we reached the end of the view without finding
10361        * a focusable row.  We will step backwards to find the last
10362        * focusable row.
10363        */
10364       cursor_tree = start_cursor_tree;
10365       cursor_node = start_cursor_node;
10366       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10367
10368       search_first_focusable_path (tree_view, &cursor_path,
10369                                    (count == -1),
10370                                    &cursor_tree, &cursor_node);
10371     }
10372
10373   if (!cursor_path)
10374     goto cleanup;
10375
10376   /* update y */
10377   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10378
10379   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10380
10381   y -= window_y;
10382   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10383   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10384   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10385
10386   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10387     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10388
10389   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10390
10391 cleanup:
10392   gtk_tree_path_free (old_cursor_path);
10393   gtk_tree_path_free (cursor_path);
10394 }
10395
10396 static void
10397 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10398                                       gint         count)
10399 {
10400   GtkRBTree *cursor_tree = NULL;
10401   GtkRBNode *cursor_node = NULL;
10402   GtkTreePath *cursor_path = NULL;
10403   GtkTreeViewColumn *column;
10404   GtkTreeIter iter;
10405   GList *list;
10406   gboolean found_column = FALSE;
10407   gboolean rtl;
10408   GtkDirectionType direction;
10409   GtkCellArea     *cell_area;
10410   GtkCellRenderer *last_focus_cell = NULL;
10411   GtkCellArea     *last_focus_area = NULL;
10412
10413   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10414
10415   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10416     return;
10417
10418   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10419     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10420   else
10421     return;
10422
10423   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
10424   if (cursor_tree == NULL)
10425     return;
10426   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10427     {
10428       gtk_tree_path_free (cursor_path);
10429       return;
10430     }
10431   gtk_tree_path_free (cursor_path);
10432
10433   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10434   if (tree_view->priv->focus_column)
10435     {
10436       /* Save the cell/area we are moving focus from, if moving the cursor
10437        * by one step hits the end we'll set focus back here */
10438       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10439       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10440
10441       for (; list; list = (rtl ? list->prev : list->next))
10442         {
10443           if (list->data == tree_view->priv->focus_column)
10444             break;
10445         }
10446     }
10447
10448   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10449
10450   while (list)
10451     {
10452       column = list->data;
10453       if (gtk_tree_view_column_get_visible (column) == FALSE)
10454         goto loop_end;
10455
10456       gtk_tree_view_column_cell_set_cell_data (column,
10457                                                tree_view->priv->model,
10458                                                &iter,
10459                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10460                                                cursor_node->children?TRUE:FALSE);
10461
10462       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10463       if (gtk_cell_area_focus (cell_area, direction))
10464         {
10465           tree_view->priv->focus_column = column;
10466           found_column = TRUE;
10467           break;
10468         }
10469
10470     loop_end:
10471       if (count == 1)
10472         list = rtl ? list->prev : list->next;
10473       else
10474         list = rtl ? list->next : list->prev;
10475     }
10476
10477   if (found_column)
10478     {
10479       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10480         _gtk_tree_view_queue_draw_node (tree_view,
10481                                         cursor_tree,
10482                                         cursor_node,
10483                                         NULL);
10484       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10485       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10486     }
10487   else
10488     {
10489       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10490
10491       if (last_focus_area)
10492         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10493     }
10494
10495   gtk_tree_view_clamp_column_visible (tree_view,
10496                                       tree_view->priv->focus_column, TRUE);
10497 }
10498
10499 static void
10500 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10501                                      gint         count)
10502 {
10503   GtkRBTree *cursor_tree;
10504   GtkRBNode *cursor_node;
10505   GtkTreePath *path;
10506   GtkTreePath *old_path;
10507
10508   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10509     return;
10510
10511   g_return_if_fail (tree_view->priv->tree != NULL);
10512
10513   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10514
10515   cursor_tree = tree_view->priv->tree;
10516   cursor_node = cursor_tree->root;
10517
10518   if (count == -1)
10519     {
10520       while (cursor_node && cursor_node->left != cursor_tree->nil)
10521         cursor_node = cursor_node->left;
10522
10523       /* Now go forward to find the first focusable row. */
10524       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10525       search_first_focusable_path (tree_view, &path,
10526                                    TRUE, &cursor_tree, &cursor_node);
10527     }
10528   else
10529     {
10530       do
10531         {
10532           while (cursor_node && cursor_node->right != cursor_tree->nil)
10533             cursor_node = cursor_node->right;
10534           if (cursor_node->children == NULL)
10535             break;
10536
10537           cursor_tree = cursor_node->children;
10538           cursor_node = cursor_tree->root;
10539         }
10540       while (1);
10541
10542       /* Now go backwards to find last focusable row. */
10543       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10544       search_first_focusable_path (tree_view, &path,
10545                                    FALSE, &cursor_tree, &cursor_node);
10546     }
10547
10548   if (!path)
10549     goto cleanup;
10550
10551   if (gtk_tree_path_compare (old_path, path))
10552     {
10553       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10554       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10555     }
10556   else
10557     {
10558       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10559     }
10560
10561 cleanup:
10562   gtk_tree_path_free (old_path);
10563   gtk_tree_path_free (path);
10564 }
10565
10566 static gboolean
10567 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10568 {
10569   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10570     return FALSE;
10571
10572   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10573     return FALSE;
10574
10575   gtk_tree_selection_select_all (tree_view->priv->selection);
10576
10577   return TRUE;
10578 }
10579
10580 static gboolean
10581 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10582 {
10583   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10584     return FALSE;
10585
10586   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10587     return FALSE;
10588
10589   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10590
10591   return TRUE;
10592 }
10593
10594 static gboolean
10595 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10596                                       gboolean     start_editing)
10597 {
10598   GtkRBTree *new_tree = NULL;
10599   GtkRBNode *new_node = NULL;
10600   GtkRBTree *cursor_tree = NULL;
10601   GtkRBNode *cursor_node = NULL;
10602   GtkTreePath *cursor_path = NULL;
10603   GtkTreeSelectMode mode = 0;
10604
10605   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10606     return FALSE;
10607
10608   if (tree_view->priv->cursor)
10609     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10610
10611   if (cursor_path == NULL)
10612     return FALSE;
10613
10614   _gtk_tree_view_find_node (tree_view, cursor_path,
10615                             &cursor_tree, &cursor_node);
10616
10617   if (cursor_tree == NULL)
10618     {
10619       gtk_tree_path_free (cursor_path);
10620       return FALSE;
10621     }
10622
10623   if (!tree_view->priv->shift_pressed && start_editing &&
10624       tree_view->priv->focus_column)
10625     {
10626       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10627         {
10628           gtk_tree_path_free (cursor_path);
10629           return TRUE;
10630         }
10631     }
10632
10633   if (tree_view->priv->ctrl_pressed)
10634     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10635   if (tree_view->priv->shift_pressed)
10636     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10637
10638   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10639                                             cursor_node,
10640                                             cursor_tree,
10641                                             cursor_path,
10642                                             mode,
10643                                             FALSE);
10644
10645   /* We bail out if the original (tree, node) don't exist anymore after
10646    * handling the selection-changed callback.  We do return TRUE because
10647    * the key press has been handled at this point.
10648    */
10649   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10650
10651   if (cursor_tree != new_tree || cursor_node != new_node)
10652     return FALSE;
10653
10654   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10655
10656   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10657   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10658
10659   if (!tree_view->priv->shift_pressed)
10660     gtk_tree_view_row_activated (tree_view, cursor_path,
10661                                  tree_view->priv->focus_column);
10662
10663   gtk_tree_path_free (cursor_path);
10664
10665   return TRUE;
10666 }
10667
10668 static gboolean
10669 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10670 {
10671   GtkRBTree *new_tree = NULL;
10672   GtkRBNode *new_node = NULL;
10673   GtkRBTree *cursor_tree = NULL;
10674   GtkRBNode *cursor_node = NULL;
10675   GtkTreePath *cursor_path = NULL;
10676
10677   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10678     return FALSE;
10679
10680   cursor_path = NULL;
10681   if (tree_view->priv->cursor)
10682     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10683
10684   if (cursor_path == NULL)
10685     return FALSE;
10686
10687   _gtk_tree_view_find_node (tree_view, cursor_path,
10688                             &cursor_tree, &cursor_node);
10689   if (cursor_tree == NULL)
10690     {
10691       gtk_tree_path_free (cursor_path);
10692       return FALSE;
10693     }
10694
10695   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10696                                             cursor_node,
10697                                             cursor_tree,
10698                                             cursor_path,
10699                                             GTK_TREE_SELECT_MODE_TOGGLE,
10700                                             FALSE);
10701
10702   /* We bail out if the original (tree, node) don't exist anymore after
10703    * handling the selection-changed callback.  We do return TRUE because
10704    * the key press has been handled at this point.
10705    */
10706   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10707
10708   if (cursor_tree != new_tree || cursor_node != new_node)
10709     return FALSE;
10710
10711   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10712
10713   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10714   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10715   gtk_tree_path_free (cursor_path);
10716
10717   return TRUE;
10718 }
10719
10720 static gboolean
10721 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10722                                                gboolean     logical,
10723                                                gboolean     expand,
10724                                                gboolean     open_all)
10725 {
10726   GtkTreePath *cursor_path = NULL;
10727   GtkRBTree *tree;
10728   GtkRBNode *node;
10729
10730   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10731     return FALSE;
10732
10733   cursor_path = NULL;
10734   if (tree_view->priv->cursor)
10735     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10736
10737   if (cursor_path == NULL)
10738     return FALSE;
10739
10740   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10741     return FALSE;
10742
10743   /* Don't handle the event if we aren't an expander */
10744   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10745     return FALSE;
10746
10747   if (!logical
10748       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10749     expand = !expand;
10750
10751   if (expand)
10752     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10753   else
10754     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10755
10756   gtk_tree_path_free (cursor_path);
10757
10758   return TRUE;
10759 }
10760
10761 static gboolean
10762 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10763 {
10764   GtkRBTree *cursor_tree = NULL;
10765   GtkRBNode *cursor_node = NULL;
10766   GtkTreePath *cursor_path = NULL;
10767   GdkModifierType state;
10768
10769   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10770     goto out;
10771
10772   cursor_path = NULL;
10773   if (tree_view->priv->cursor)
10774     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10775
10776   if (cursor_path == NULL)
10777     goto out;
10778
10779   _gtk_tree_view_find_node (tree_view, cursor_path,
10780                             &cursor_tree, &cursor_node);
10781   if (cursor_tree == NULL)
10782     {
10783       gtk_tree_path_free (cursor_path);
10784       goto out;
10785     }
10786
10787   if (cursor_tree->parent_node)
10788     {
10789       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10790       cursor_node = cursor_tree->parent_node;
10791       cursor_tree = cursor_tree->parent_tree;
10792
10793       gtk_tree_path_up (cursor_path);
10794
10795       if (gtk_get_current_event_state (&state))
10796         {
10797           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10798             tree_view->priv->ctrl_pressed = TRUE;
10799         }
10800
10801       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10802       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10803
10804       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10805       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10806       gtk_tree_path_free (cursor_path);
10807
10808       tree_view->priv->ctrl_pressed = FALSE;
10809
10810       return TRUE;
10811     }
10812
10813  out:
10814
10815   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10816   return FALSE;
10817 }
10818
10819 static gboolean
10820 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10821 {
10822   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10823   tree_view->priv->typeselect_flush_timeout = 0;
10824
10825   return FALSE;
10826 }
10827
10828 /* Cut and paste from gtkwindow.c */
10829 static void
10830 send_focus_change (GtkWidget *widget,
10831                    GdkDevice *device,
10832                    gboolean   in)
10833 {
10834   GdkDeviceManager *device_manager;
10835   GList *devices, *d;
10836
10837   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10838   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10839   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10840   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10841
10842   for (d = devices; d; d = d->next)
10843     {
10844       GdkDevice *dev = d->data;
10845       GdkEvent *fevent;
10846       GdkWindow *window;
10847
10848       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10849         continue;
10850
10851       window = gtk_widget_get_window (widget);
10852
10853       /* Skip non-master keyboards that haven't
10854        * selected for events from this window
10855        */
10856       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10857           !gdk_window_get_device_events (window, dev))
10858         continue;
10859
10860       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10861
10862       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10863       fevent->focus_change.window = g_object_ref (window);
10864       fevent->focus_change.in = in;
10865       gdk_event_set_device (fevent, device);
10866
10867       gtk_widget_send_focus_change (widget, fevent);
10868
10869       gdk_event_free (fevent);
10870     }
10871
10872   g_list_free (devices);
10873 }
10874
10875 static void
10876 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10877 {
10878   GtkWidget *frame, *vbox, *toplevel;
10879   GdkScreen *screen;
10880
10881   if (tree_view->priv->search_custom_entry_set)
10882     return;
10883
10884   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10885   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10886
10887    if (tree_view->priv->search_window != NULL)
10888      {
10889        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10890          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10891                                       GTK_WINDOW (tree_view->priv->search_window));
10892        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10893          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10894                                          GTK_WINDOW (tree_view->priv->search_window));
10895
10896        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10897
10898        return;
10899      }
10900
10901   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10902   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10903
10904   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10905     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10906                                  GTK_WINDOW (tree_view->priv->search_window));
10907
10908   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10909                             GDK_WINDOW_TYPE_HINT_UTILITY);
10910   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10911   g_signal_connect (tree_view->priv->search_window, "delete-event",
10912                     G_CALLBACK (gtk_tree_view_search_delete_event),
10913                     tree_view);
10914   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10915                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10916                     tree_view);
10917   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10918                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10919                     tree_view);
10920   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10921                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10922                     tree_view);
10923
10924   frame = gtk_frame_new (NULL);
10925   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10926   gtk_widget_show (frame);
10927   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10928
10929   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10930   gtk_widget_show (vbox);
10931   gtk_container_add (GTK_CONTAINER (frame), vbox);
10932   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10933
10934   /* add entry */
10935   tree_view->priv->search_entry = gtk_entry_new ();
10936   gtk_widget_show (tree_view->priv->search_entry);
10937   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10938                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10939                     tree_view);
10940   g_signal_connect (tree_view->priv->search_entry,
10941                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10942                     tree_view);
10943
10944   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10945                     "preedit-changed",
10946                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10947                     tree_view);
10948
10949   gtk_container_add (GTK_CONTAINER (vbox),
10950                      tree_view->priv->search_entry);
10951
10952   gtk_widget_realize (tree_view->priv->search_entry);
10953 }
10954
10955 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10956  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10957  */
10958 static gboolean
10959 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10960                                              GdkDevice   *device,
10961                                              gboolean     keybinding)
10962 {
10963   /* We only start interactive search if we have focus or the columns
10964    * have focus.  If one of our children have focus, we don't want to
10965    * start the search.
10966    */
10967   GList *list;
10968   gboolean found_focus = FALSE;
10969   GtkWidgetClass *entry_parent_class;
10970
10971   if (!tree_view->priv->enable_search && !keybinding)
10972     return FALSE;
10973
10974   if (tree_view->priv->search_custom_entry_set)
10975     return FALSE;
10976
10977   if (tree_view->priv->search_window != NULL &&
10978       gtk_widget_get_visible (tree_view->priv->search_window))
10979     return TRUE;
10980
10981   for (list = tree_view->priv->columns; list; list = list->next)
10982     {
10983       GtkTreeViewColumn *column;
10984       GtkWidget         *button;
10985
10986       column = list->data;
10987       if (!gtk_tree_view_column_get_visible (column))
10988         continue;
10989
10990       button = gtk_tree_view_column_get_button (column);
10991       if (gtk_widget_has_focus (button))
10992         {
10993           found_focus = TRUE;
10994           break;
10995         }
10996     }
10997
10998   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10999     found_focus = TRUE;
11000
11001   if (!found_focus)
11002     return FALSE;
11003
11004   if (tree_view->priv->search_column < 0)
11005     return FALSE;
11006
11007   gtk_tree_view_ensure_interactive_directory (tree_view);
11008
11009   if (keybinding)
11010     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11011
11012   /* done, show it */
11013   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11014   gtk_widget_show (tree_view->priv->search_window);
11015   if (tree_view->priv->search_entry_changed_id == 0)
11016     {
11017       tree_view->priv->search_entry_changed_id =
11018         g_signal_connect (tree_view->priv->search_entry, "changed",
11019                           G_CALLBACK (gtk_tree_view_search_init),
11020                           tree_view);
11021     }
11022
11023   tree_view->priv->typeselect_flush_timeout =
11024     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11025                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11026                    tree_view);
11027
11028   /* Grab focus will select all the text.  We don't want that to happen, so we
11029    * call the parent instance and bypass the selection change.  This is probably
11030    * really non-kosher. */
11031   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11032   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11033
11034   /* send focus-in event */
11035   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11036
11037   /* search first matching iter */
11038   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11039
11040   return TRUE;
11041 }
11042
11043 static gboolean
11044 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11045 {
11046   return gtk_tree_view_real_start_interactive_search (tree_view,
11047                                                       gtk_get_current_event_device (),
11048                                                       TRUE);
11049 }
11050
11051 /* this function returns the new width of the column being resized given
11052  * the column and x position of the cursor; the x cursor position is passed
11053  * in as a pointer and automagicly corrected if it's beyond min/max limits
11054  */
11055 static gint
11056 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11057                                 gint       i,
11058                                 gint      *x)
11059 {
11060   GtkAllocation allocation;
11061   GtkTreeViewColumn *column;
11062   GtkRequisition button_req;
11063   gint max_width, min_width;
11064   gint width;
11065   gboolean rtl;
11066
11067   /* first translate the x position from widget->window
11068    * to clist->clist_window
11069    */
11070   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11071   column = g_list_nth (tree_view->priv->columns, i)->data;
11072   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11073   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11074
11075   /* Clamp down the value */
11076   min_width = gtk_tree_view_column_get_min_width (column);
11077   if (min_width == -1)
11078     {
11079       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11080       width = MAX (button_req.width, width);
11081     }
11082   else
11083     width = MAX (min_width, width);
11084
11085   max_width = gtk_tree_view_column_get_max_width (column);
11086   if (max_width != -1)
11087     width = MIN (width, max_width);
11088
11089   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11090
11091   return width;
11092 }
11093
11094
11095 /* FIXME this adjust_allocation is a big cut-and-paste from
11096  * GtkCList, needs to be some "official" way to do this
11097  * factored out.
11098  */
11099 typedef struct
11100 {
11101   GdkWindow *window;
11102   int dx;
11103   int dy;
11104 } ScrollData;
11105
11106 /* The window to which widget->window is relative */
11107 #define ALLOCATION_WINDOW(widget)               \
11108    (!gtk_widget_get_has_window (widget) ?                   \
11109     gtk_widget_get_window (widget) :                        \
11110     gdk_window_get_parent (gtk_widget_get_window (widget)))
11111
11112 static void
11113 adjust_allocation_recurse (GtkWidget *widget,
11114                            gpointer   data)
11115 {
11116   GtkAllocation allocation;
11117   ScrollData *scroll_data = data;
11118
11119   /* Need to really size allocate instead of just poking
11120    * into widget->allocation if the widget is not realized.
11121    * FIXME someone figure out why this was.
11122    */
11123   gtk_widget_get_allocation (widget, &allocation);
11124   if (!gtk_widget_get_realized (widget))
11125     {
11126       if (gtk_widget_get_visible (widget))
11127         {
11128           GdkRectangle tmp_rectangle = allocation;
11129           tmp_rectangle.x += scroll_data->dx;
11130           tmp_rectangle.y += scroll_data->dy;
11131
11132           gtk_widget_size_allocate (widget, &tmp_rectangle);
11133         }
11134     }
11135   else
11136     {
11137       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11138         {
11139           allocation.x += scroll_data->dx;
11140           allocation.y += scroll_data->dy;
11141           gtk_widget_set_allocation (widget, &allocation);
11142
11143           if (GTK_IS_CONTAINER (widget))
11144             gtk_container_forall (GTK_CONTAINER (widget),
11145                                   adjust_allocation_recurse,
11146                                   data);
11147         }
11148     }
11149 }
11150
11151 static void
11152 adjust_allocation (GtkWidget *widget,
11153                    int        dx,
11154                    int        dy)
11155 {
11156   ScrollData scroll_data;
11157
11158   if (gtk_widget_get_realized (widget))
11159     scroll_data.window = ALLOCATION_WINDOW (widget);
11160   else
11161     scroll_data.window = NULL;
11162
11163   scroll_data.dx = dx;
11164   scroll_data.dy = dy;
11165
11166   adjust_allocation_recurse (widget, &scroll_data);
11167 }
11168
11169 /* Callbacks */
11170 static void
11171 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11172                                   GtkTreeView   *tree_view)
11173 {
11174   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11175     {
11176       GtkStyleContext *context;
11177       gint dy;
11178
11179       gdk_window_move (tree_view->priv->bin_window,
11180                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11181                        gtk_tree_view_get_effective_header_height (tree_view));
11182       gdk_window_move (tree_view->priv->header_window,
11183                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11184                        0);
11185       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11186       if (dy)
11187         {
11188           update_prelight (tree_view,
11189                            tree_view->priv->event_last_x,
11190                            tree_view->priv->event_last_y - dy);
11191
11192           if (tree_view->priv->edited_column)
11193             {
11194               GList *list;
11195               GtkTreeViewChild *child = NULL;
11196               GtkCellEditable *edit_widget;
11197               GtkCellArea *area;
11198
11199               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11200               edit_widget = gtk_cell_area_get_edit_widget (area);
11201               if (GTK_IS_WIDGET (edit_widget))
11202                 {
11203                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11204
11205                   for (list = tree_view->priv->children; list; list = list->next)
11206                     {
11207                       child = (GtkTreeViewChild *)list->data;
11208                       if (child->widget == GTK_WIDGET (edit_widget))
11209                         {
11210                           child->y += dy;
11211                           break;
11212                         }
11213                     }
11214                 }
11215             }
11216         }
11217       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11218
11219       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11220       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11221
11222       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11223         {
11224           /* update our dy and top_row */
11225           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11226
11227           if (!tree_view->priv->in_top_row_to_dy)
11228             gtk_tree_view_dy_to_top_row (tree_view);
11229         }
11230
11231       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11232       gtk_tree_view_bin_process_updates (tree_view);
11233     }
11234 }
11235
11236 \f
11237
11238 /* Public methods
11239  */
11240
11241 /**
11242  * gtk_tree_view_new:
11243  *
11244  * Creates a new #GtkTreeView widget.
11245  *
11246  * Return value: A newly created #GtkTreeView widget.
11247  **/
11248 GtkWidget *
11249 gtk_tree_view_new (void)
11250 {
11251   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11252 }
11253
11254 /**
11255  * gtk_tree_view_new_with_model:
11256  * @model: the model.
11257  *
11258  * Creates a new #GtkTreeView widget with the model initialized to @model.
11259  *
11260  * Return value: A newly created #GtkTreeView widget.
11261  **/
11262 GtkWidget *
11263 gtk_tree_view_new_with_model (GtkTreeModel *model)
11264 {
11265   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11266 }
11267
11268 /* Public Accessors
11269  */
11270
11271 /**
11272  * gtk_tree_view_get_model:
11273  * @tree_view: a #GtkTreeView
11274  *
11275  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11276  * model is unset.
11277  *
11278  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11279  **/
11280 GtkTreeModel *
11281 gtk_tree_view_get_model (GtkTreeView *tree_view)
11282 {
11283   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11284
11285   return tree_view->priv->model;
11286 }
11287
11288 /**
11289  * gtk_tree_view_set_model:
11290  * @tree_view: A #GtkTreeNode.
11291  * @model: (allow-none): The model.
11292  *
11293  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11294  * set, it will remove it before setting the new model.  If @model is %NULL,
11295  * then it will unset the old model.
11296  **/
11297 void
11298 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11299                          GtkTreeModel *model)
11300 {
11301   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11302   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11303
11304   if (model == tree_view->priv->model)
11305     return;
11306
11307   if (tree_view->priv->scroll_to_path)
11308     {
11309       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11310       tree_view->priv->scroll_to_path = NULL;
11311     }
11312
11313   if (tree_view->priv->model)
11314     {
11315       GList *tmplist = tree_view->priv->columns;
11316       GtkStyleContext *context;
11317
11318       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11319       gtk_tree_view_stop_editing (tree_view, TRUE);
11320
11321       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11322       gtk_style_context_cancel_animations (context, NULL);
11323
11324       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11325                                             gtk_tree_view_row_changed,
11326                                             tree_view);
11327       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11328                                             gtk_tree_view_row_inserted,
11329                                             tree_view);
11330       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11331                                             gtk_tree_view_row_has_child_toggled,
11332                                             tree_view);
11333       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11334                                             gtk_tree_view_row_deleted,
11335                                             tree_view);
11336       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11337                                             gtk_tree_view_rows_reordered,
11338                                             tree_view);
11339
11340       for (; tmplist; tmplist = tmplist->next)
11341         _gtk_tree_view_column_unset_model (tmplist->data,
11342                                            tree_view->priv->model);
11343
11344       if (tree_view->priv->tree)
11345         gtk_tree_view_free_rbtree (tree_view);
11346
11347       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11348       tree_view->priv->drag_dest_row = NULL;
11349       gtk_tree_row_reference_free (tree_view->priv->cursor);
11350       tree_view->priv->cursor = NULL;
11351       gtk_tree_row_reference_free (tree_view->priv->anchor);
11352       tree_view->priv->anchor = NULL;
11353       gtk_tree_row_reference_free (tree_view->priv->top_row);
11354       tree_view->priv->top_row = NULL;
11355       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11356       tree_view->priv->scroll_to_path = NULL;
11357
11358       tree_view->priv->scroll_to_column = NULL;
11359
11360       g_object_unref (tree_view->priv->model);
11361
11362       tree_view->priv->search_column = -1;
11363       tree_view->priv->fixed_height_check = 0;
11364       tree_view->priv->fixed_height = -1;
11365       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11366       tree_view->priv->last_button_x = -1;
11367       tree_view->priv->last_button_y = -1;
11368     }
11369
11370   tree_view->priv->model = model;
11371
11372   if (tree_view->priv->model)
11373     {
11374       gint i;
11375       GtkTreePath *path;
11376       GtkTreeIter iter;
11377       GtkTreeModelFlags flags;
11378
11379       if (tree_view->priv->search_column == -1)
11380         {
11381           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11382             {
11383               GType type = gtk_tree_model_get_column_type (model, i);
11384
11385               if (g_value_type_transformable (type, G_TYPE_STRING))
11386                 {
11387                   tree_view->priv->search_column = i;
11388                   break;
11389                 }
11390             }
11391         }
11392
11393       g_object_ref (tree_view->priv->model);
11394       g_signal_connect (tree_view->priv->model,
11395                         "row-changed",
11396                         G_CALLBACK (gtk_tree_view_row_changed),
11397                         tree_view);
11398       g_signal_connect (tree_view->priv->model,
11399                         "row-inserted",
11400                         G_CALLBACK (gtk_tree_view_row_inserted),
11401                         tree_view);
11402       g_signal_connect (tree_view->priv->model,
11403                         "row-has-child-toggled",
11404                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11405                         tree_view);
11406       g_signal_connect (tree_view->priv->model,
11407                         "row-deleted",
11408                         G_CALLBACK (gtk_tree_view_row_deleted),
11409                         tree_view);
11410       g_signal_connect (tree_view->priv->model,
11411                         "rows-reordered",
11412                         G_CALLBACK (gtk_tree_view_rows_reordered),
11413                         tree_view);
11414
11415       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11416       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11417         tree_view->priv->is_list = TRUE;
11418       else
11419         tree_view->priv->is_list = FALSE;
11420
11421       path = gtk_tree_path_new_first ();
11422       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11423         {
11424           tree_view->priv->tree = _gtk_rbtree_new ();
11425           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11426         }
11427       gtk_tree_path_free (path);
11428
11429       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11430       install_presize_handler (tree_view);
11431     }
11432
11433   g_object_notify (G_OBJECT (tree_view), "model");
11434
11435   if (tree_view->priv->selection)
11436   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11437
11438   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11439     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11440 }
11441
11442 /**
11443  * gtk_tree_view_get_selection:
11444  * @tree_view: A #GtkTreeView.
11445  *
11446  * Gets the #GtkTreeSelection associated with @tree_view.
11447  *
11448  * Return value: (transfer none): A #GtkTreeSelection object.
11449  **/
11450 GtkTreeSelection *
11451 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11452 {
11453   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11454
11455   return tree_view->priv->selection;
11456 }
11457
11458 /**
11459  * gtk_tree_view_get_hadjustment:
11460  * @tree_view: A #GtkTreeView
11461  *
11462  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11463  *
11464  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11465  *     if none is currently being used.
11466  *
11467  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11468  **/
11469 GtkAdjustment *
11470 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11471 {
11472   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11473
11474   return tree_view->priv->hadjustment;
11475 }
11476
11477 /**
11478  * gtk_tree_view_set_hadjustment:
11479  * @tree_view: A #GtkTreeView
11480  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11481  *
11482  * Sets the #GtkAdjustment for the current horizontal aspect.
11483  *
11484  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11485  **/
11486 void
11487 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11488                                GtkAdjustment *adjustment)
11489 {
11490   GtkTreeViewPrivate *priv = tree_view->priv;
11491
11492   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11493   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11494
11495   if (adjustment && priv->hadjustment == adjustment)
11496     return;
11497
11498   if (priv->hadjustment != NULL)
11499     {
11500       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11501                                             gtk_tree_view_adjustment_changed,
11502                                             tree_view);
11503       g_object_unref (priv->hadjustment);
11504     }
11505
11506   if (adjustment == NULL)
11507     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11508                                      0.0, 0.0, 0.0);
11509
11510   g_signal_connect (adjustment, "value-changed",
11511                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11512   priv->hadjustment = g_object_ref_sink (adjustment);
11513   /* FIXME: Adjustment should probably be populated here with fresh values, but
11514    * internal details are too complicated for me to decipher right now.
11515    */
11516   gtk_tree_view_adjustment_changed (NULL, tree_view);
11517
11518   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11519 }
11520
11521 /**
11522  * gtk_tree_view_get_vadjustment:
11523  * @tree_view: A #GtkTreeView
11524  *
11525  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11526  *
11527  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11528  *     if none is currently being used.
11529  *
11530  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11531  **/
11532 GtkAdjustment *
11533 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11534 {
11535   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11536
11537   return tree_view->priv->vadjustment;
11538 }
11539
11540 /**
11541  * gtk_tree_view_set_vadjustment:
11542  * @tree_view: A #GtkTreeView
11543  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11544  *
11545  * Sets the #GtkAdjustment for the current vertical aspect.
11546  *
11547  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11548  **/
11549 void
11550 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11551                                GtkAdjustment *adjustment)
11552 {
11553   GtkTreeViewPrivate *priv = tree_view->priv;
11554
11555   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11556   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11557
11558   if (adjustment && priv->vadjustment == adjustment)
11559     return;
11560
11561   if (priv->vadjustment != NULL)
11562     {
11563       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11564                                             gtk_tree_view_adjustment_changed,
11565                                             tree_view);
11566       g_object_unref (priv->vadjustment);
11567     }
11568
11569   if (adjustment == NULL)
11570     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11571                                      0.0, 0.0, 0.0);
11572
11573   g_signal_connect (adjustment, "value-changed",
11574                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11575   priv->vadjustment = g_object_ref_sink (adjustment);
11576   /* FIXME: Adjustment should probably be populated here with fresh values, but
11577    * internal details are too complicated for me to decipher right now.
11578    */
11579   gtk_tree_view_adjustment_changed (NULL, tree_view);
11580   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11581 }
11582
11583 /* Column and header operations */
11584
11585 /**
11586  * gtk_tree_view_get_headers_visible:
11587  * @tree_view: A #GtkTreeView.
11588  *
11589  * Returns %TRUE if the headers on the @tree_view are visible.
11590  *
11591  * Return value: Whether the headers are visible or not.
11592  **/
11593 gboolean
11594 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11595 {
11596   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11597
11598   return tree_view->priv->headers_visible;
11599 }
11600
11601 /**
11602  * gtk_tree_view_set_headers_visible:
11603  * @tree_view: A #GtkTreeView.
11604  * @headers_visible: %TRUE if the headers are visible
11605  *
11606  * Sets the visibility state of the headers.
11607  **/
11608 void
11609 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11610                                    gboolean     headers_visible)
11611 {
11612   gint x, y;
11613   GList *list;
11614   GtkTreeViewColumn *column;
11615   GtkAllocation allocation;
11616   GtkWidget *button;
11617
11618   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11619
11620   headers_visible = !! headers_visible;
11621
11622   if (tree_view->priv->headers_visible == headers_visible)
11623     return;
11624
11625   tree_view->priv->headers_visible = headers_visible == TRUE;
11626
11627   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11628     {
11629       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11630       if (headers_visible)
11631         {
11632           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11633           gdk_window_move_resize (tree_view->priv->bin_window,
11634                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11635                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11636
11637           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11638             gtk_tree_view_map_buttons (tree_view);
11639         }
11640       else
11641         {
11642           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11643
11644           for (list = tree_view->priv->columns; list; list = list->next)
11645             {
11646               column = list->data;
11647               button = gtk_tree_view_column_get_button (column);
11648
11649               gtk_widget_hide (button);
11650               gtk_widget_unmap (button);
11651             }
11652           gdk_window_hide (tree_view->priv->header_window);
11653         }
11654     }
11655
11656   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11657   gtk_adjustment_configure (tree_view->priv->vadjustment,
11658                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11659                             0,
11660                             tree_view->priv->height,
11661                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11662                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11663                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11664
11665   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11666
11667   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11668 }
11669
11670 /**
11671  * gtk_tree_view_columns_autosize:
11672  * @tree_view: A #GtkTreeView.
11673  *
11674  * Resizes all columns to their optimal width. Only works after the
11675  * treeview has been realized.
11676  **/
11677 void
11678 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11679 {
11680   gboolean dirty = FALSE;
11681   GList *list;
11682   GtkTreeViewColumn *column;
11683
11684   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11685
11686   for (list = tree_view->priv->columns; list; list = list->next)
11687     {
11688       column = list->data;
11689       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11690         continue;
11691       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11692       dirty = TRUE;
11693     }
11694
11695   if (dirty)
11696     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11697 }
11698
11699 /**
11700  * gtk_tree_view_set_headers_clickable:
11701  * @tree_view: A #GtkTreeView.
11702  * @setting: %TRUE if the columns are clickable.
11703  *
11704  * Allow the column title buttons to be clicked.
11705  **/
11706 void
11707 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11708                                      gboolean   setting)
11709 {
11710   GList *list;
11711
11712   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11713
11714   for (list = tree_view->priv->columns; list; list = list->next)
11715     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11716
11717   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11718 }
11719
11720
11721 /**
11722  * gtk_tree_view_get_headers_clickable:
11723  * @tree_view: A #GtkTreeView.
11724  *
11725  * Returns whether all header columns are clickable.
11726  *
11727  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11728  *
11729  * Since: 2.10
11730  **/
11731 gboolean
11732 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11733 {
11734   GList *list;
11735
11736   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11737
11738   for (list = tree_view->priv->columns; list; list = list->next)
11739     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11740       return FALSE;
11741
11742   return TRUE;
11743 }
11744
11745 /**
11746  * gtk_tree_view_set_rules_hint
11747  * @tree_view: a #GtkTreeView
11748  * @setting: %TRUE if the tree requires reading across rows
11749  *
11750  * This function tells GTK+ that the user interface for your
11751  * application requires users to read across tree rows and associate
11752  * cells with one another. By default, GTK+ will then render the tree
11753  * with alternating row colors. Do <emphasis>not</emphasis> use it
11754  * just because you prefer the appearance of the ruled tree; that's a
11755  * question for the theme. Some themes will draw tree rows in
11756  * alternating colors even when rules are turned off, and users who
11757  * prefer that appearance all the time can choose those themes. You
11758  * should call this function only as a <emphasis>semantic</emphasis>
11759  * hint to the theme engine that your tree makes alternating colors
11760  * useful from a functional standpoint (since it has lots of columns,
11761  * generally).
11762  *
11763  **/
11764 void
11765 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11766                               gboolean      setting)
11767 {
11768   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11769
11770   setting = setting != FALSE;
11771
11772   if (tree_view->priv->has_rules != setting)
11773     {
11774       tree_view->priv->has_rules = setting;
11775       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11776     }
11777
11778   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11779 }
11780
11781 /**
11782  * gtk_tree_view_get_rules_hint
11783  * @tree_view: a #GtkTreeView
11784  *
11785  * Gets the setting set by gtk_tree_view_set_rules_hint().
11786  *
11787  * Return value: %TRUE if rules are useful for the user of this tree
11788  **/
11789 gboolean
11790 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11791 {
11792   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11793
11794   return tree_view->priv->has_rules;
11795 }
11796
11797 /* Public Column functions
11798  */
11799
11800 /**
11801  * gtk_tree_view_append_column:
11802  * @tree_view: A #GtkTreeView.
11803  * @column: The #GtkTreeViewColumn to add.
11804  *
11805  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11806  * mode enabled, then @column must have its "sizing" property set to be
11807  * GTK_TREE_VIEW_COLUMN_FIXED.
11808  *
11809  * Return value: The number of columns in @tree_view after appending.
11810  **/
11811 gint
11812 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11813                              GtkTreeViewColumn *column)
11814 {
11815   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11816   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11817   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11818
11819   return gtk_tree_view_insert_column (tree_view, column, -1);
11820 }
11821
11822 void
11823 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11824 {
11825   GList *columns;
11826
11827   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11828     {
11829       GtkTreeViewColumn *column = columns->data;
11830       GtkWidget *header_widget;
11831
11832       if (gtk_tree_view_column_get_visible (column))
11833         continue;
11834
11835       header_widget = gtk_tree_view_column_get_widget (column);
11836
11837       if (!header_widget)
11838         header_widget = gtk_tree_view_column_get_button (column);
11839
11840       gtk_widget_reset_style (header_widget);
11841     }
11842 }
11843
11844
11845 /**
11846  * gtk_tree_view_remove_column:
11847  * @tree_view: A #GtkTreeView.
11848  * @column: The #GtkTreeViewColumn to remove.
11849  *
11850  * Removes @column from @tree_view.
11851  *
11852  * Return value: The number of columns in @tree_view after removing.
11853  **/
11854 gint
11855 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11856                              GtkTreeViewColumn *column)
11857 {
11858   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11859   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11860   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11861
11862   if (tree_view->priv->focus_column == column)
11863     tree_view->priv->focus_column = NULL;
11864
11865   if (tree_view->priv->edited_column == column)
11866     {
11867       gtk_tree_view_stop_editing (tree_view, TRUE);
11868
11869       /* no need to, but just to be sure ... */
11870       tree_view->priv->edited_column = NULL;
11871     }
11872
11873   if (tree_view->priv->expander_column == column)
11874     tree_view->priv->expander_column = NULL;
11875
11876   g_signal_handlers_disconnect_by_func (column,
11877                                         G_CALLBACK (column_sizing_notify),
11878                                         tree_view);
11879
11880   _gtk_tree_view_column_unset_tree_view (column);
11881
11882   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11883   tree_view->priv->n_columns--;
11884
11885   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11886     {
11887       GList *list;
11888
11889       _gtk_tree_view_column_unrealize_button (column);
11890       for (list = tree_view->priv->columns; list; list = list->next)
11891         {
11892           GtkTreeViewColumn *tmp_column;
11893
11894           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11895           if (gtk_tree_view_column_get_visible (tmp_column))
11896             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11897         }
11898
11899       if (tree_view->priv->n_columns == 0 &&
11900           gtk_tree_view_get_headers_visible (tree_view))
11901         gdk_window_hide (tree_view->priv->header_window);
11902
11903       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11904     }
11905
11906   _gtk_tree_view_reset_header_styles (tree_view);
11907
11908   g_object_unref (column);
11909   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11910
11911   return tree_view->priv->n_columns;
11912 }
11913
11914 /**
11915  * gtk_tree_view_insert_column:
11916  * @tree_view: A #GtkTreeView.
11917  * @column: The #GtkTreeViewColumn to be inserted.
11918  * @position: The position to insert @column in.
11919  *
11920  * This inserts the @column into the @tree_view at @position.  If @position is
11921  * -1, then the column is inserted at the end. If @tree_view has
11922  * "fixed_height" mode enabled, then @column must have its "sizing" property
11923  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11924  *
11925  * Return value: The number of columns in @tree_view after insertion.
11926  **/
11927 gint
11928 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11929                              GtkTreeViewColumn *column,
11930                              gint               position)
11931 {
11932   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11933   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11934   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11935
11936   if (tree_view->priv->fixed_height_mode)
11937     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11938                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11939
11940   g_object_ref_sink (column);
11941
11942   if (tree_view->priv->n_columns == 0 &&
11943       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11944       gtk_tree_view_get_headers_visible (tree_view))
11945     {
11946       gdk_window_show (tree_view->priv->header_window);
11947     }
11948
11949   g_signal_connect (column, "notify::sizing",
11950                     G_CALLBACK (column_sizing_notify), tree_view);
11951
11952   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11953                                             column, position);
11954   tree_view->priv->n_columns++;
11955
11956   _gtk_tree_view_column_set_tree_view (column, tree_view);
11957
11958   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11959     {
11960       GList *list;
11961
11962       _gtk_tree_view_column_realize_button (column);
11963
11964       for (list = tree_view->priv->columns; list; list = list->next)
11965         {
11966           column = GTK_TREE_VIEW_COLUMN (list->data);
11967           if (gtk_tree_view_column_get_visible (column))
11968             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11969         }
11970       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11971     }
11972
11973   _gtk_tree_view_reset_header_styles (tree_view);
11974   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11975
11976   return tree_view->priv->n_columns;
11977 }
11978
11979 /**
11980  * gtk_tree_view_insert_column_with_attributes:
11981  * @tree_view: A #GtkTreeView
11982  * @position: The position to insert the new column in.
11983  * @title: The title to set the header to.
11984  * @cell: The #GtkCellRenderer.
11985  * @Varargs: A %NULL-terminated list of attributes.
11986  *
11987  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11988  * @position.  If @position is -1, then the newly created column is inserted at
11989  * the end.  The column is initialized with the attributes given. If @tree_view
11990  * has "fixed_height" mode enabled, then the new column will have its sizing
11991  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11992  *
11993  * Return value: The number of columns in @tree_view after insertion.
11994  **/
11995 gint
11996 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11997                                              gint             position,
11998                                              const gchar     *title,
11999                                              GtkCellRenderer *cell,
12000                                              ...)
12001 {
12002   GtkTreeViewColumn *column;
12003   gchar *attribute;
12004   va_list args;
12005   gint column_id;
12006
12007   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12008
12009   column = gtk_tree_view_column_new ();
12010   if (tree_view->priv->fixed_height_mode)
12011     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12012
12013   gtk_tree_view_column_set_title (column, title);
12014   gtk_tree_view_column_pack_start (column, cell, TRUE);
12015
12016   va_start (args, cell);
12017
12018   attribute = va_arg (args, gchar *);
12019
12020   while (attribute != NULL)
12021     {
12022       column_id = va_arg (args, gint);
12023       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12024       attribute = va_arg (args, gchar *);
12025     }
12026
12027   va_end (args);
12028
12029   gtk_tree_view_insert_column (tree_view, column, position);
12030
12031   return tree_view->priv->n_columns;
12032 }
12033
12034 /**
12035  * gtk_tree_view_insert_column_with_data_func:
12036  * @tree_view: a #GtkTreeView
12037  * @position: Position to insert, -1 for append
12038  * @title: column title
12039  * @cell: cell renderer for column
12040  * @func: function to set attributes of cell renderer
12041  * @data: data for @func
12042  * @dnotify: destroy notifier for @data
12043  *
12044  * Convenience function that inserts a new column into the #GtkTreeView
12045  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12046  * attributes (normally using data from the model). See also
12047  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12048  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12049  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12050  *
12051  * Return value: number of columns in the tree view post-insert
12052  **/
12053 gint
12054 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12055                                              gint                       position,
12056                                              const gchar               *title,
12057                                              GtkCellRenderer           *cell,
12058                                              GtkTreeCellDataFunc        func,
12059                                              gpointer                   data,
12060                                              GDestroyNotify             dnotify)
12061 {
12062   GtkTreeViewColumn *column;
12063
12064   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12065
12066   column = gtk_tree_view_column_new ();
12067   if (tree_view->priv->fixed_height_mode)
12068     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12069
12070   gtk_tree_view_column_set_title (column, title);
12071   gtk_tree_view_column_pack_start (column, cell, TRUE);
12072   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12073
12074   gtk_tree_view_insert_column (tree_view, column, position);
12075
12076   return tree_view->priv->n_columns;
12077 }
12078
12079 /**
12080  * gtk_tree_view_get_column:
12081  * @tree_view: A #GtkTreeView.
12082  * @n: The position of the column, counting from 0.
12083  *
12084  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12085  *
12086  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12087  *     position is outside the range of columns.
12088  **/
12089 GtkTreeViewColumn *
12090 gtk_tree_view_get_column (GtkTreeView *tree_view,
12091                           gint         n)
12092 {
12093   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12094
12095   if (n < 0 || n >= tree_view->priv->n_columns)
12096     return NULL;
12097
12098   if (tree_view->priv->columns == NULL)
12099     return NULL;
12100
12101   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12102 }
12103
12104 /**
12105  * gtk_tree_view_get_columns:
12106  * @tree_view: A #GtkTreeView
12107  *
12108  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12109  * The returned list must be freed with g_list_free ().
12110  *
12111  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12112  **/
12113 GList *
12114 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12115 {
12116   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12117
12118   return g_list_copy (tree_view->priv->columns);
12119 }
12120
12121 /**
12122  * gtk_tree_view_move_column_after:
12123  * @tree_view: A #GtkTreeView
12124  * @column: The #GtkTreeViewColumn to be moved.
12125  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12126  *
12127  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12128  * @column is placed in the first position.
12129  **/
12130 void
12131 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12132                                  GtkTreeViewColumn *column,
12133                                  GtkTreeViewColumn *base_column)
12134 {
12135   GList *column_list_el, *base_el = NULL;
12136
12137   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12138
12139   column_list_el = g_list_find (tree_view->priv->columns, column);
12140   g_return_if_fail (column_list_el != NULL);
12141
12142   if (base_column)
12143     {
12144       base_el = g_list_find (tree_view->priv->columns, base_column);
12145       g_return_if_fail (base_el != NULL);
12146     }
12147
12148   if (column_list_el->prev == base_el)
12149     return;
12150
12151   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12152   if (base_el == NULL)
12153     {
12154       column_list_el->prev = NULL;
12155       column_list_el->next = tree_view->priv->columns;
12156       if (column_list_el->next)
12157         column_list_el->next->prev = column_list_el;
12158       tree_view->priv->columns = column_list_el;
12159     }
12160   else
12161     {
12162       column_list_el->prev = base_el;
12163       column_list_el->next = base_el->next;
12164       if (column_list_el->next)
12165         column_list_el->next->prev = column_list_el;
12166       base_el->next = column_list_el;
12167     }
12168
12169   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12170     {
12171       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12172       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12173     }
12174
12175   _gtk_tree_view_reset_header_styles (tree_view);
12176   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12177 }
12178
12179 /**
12180  * gtk_tree_view_set_expander_column:
12181  * @tree_view: A #GtkTreeView
12182  * @column: %NULL, or the column to draw the expander arrow at.
12183  *
12184  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12185  * If @column is %NULL, then the expander arrow is always at the first
12186  * visible column.
12187  *
12188  * If you do not want expander arrow to appear in your tree, set the
12189  * expander column to a hidden column.
12190  **/
12191 void
12192 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12193                                    GtkTreeViewColumn *column)
12194 {
12195   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12196   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12197
12198   if (tree_view->priv->expander_column != column)
12199     {
12200       GList *list;
12201
12202       if (column)
12203         {
12204           /* Confirm that column is in tree_view */
12205           for (list = tree_view->priv->columns; list; list = list->next)
12206             if (list->data == column)
12207               break;
12208           g_return_if_fail (list != NULL);
12209         }
12210
12211       tree_view->priv->expander_column = column;
12212       g_object_notify (G_OBJECT (tree_view), "expander-column");
12213     }
12214 }
12215
12216 /**
12217  * gtk_tree_view_get_expander_column:
12218  * @tree_view: A #GtkTreeView
12219  *
12220  * Returns the column that is the current expander column.
12221  * This column has the expander arrow drawn next to it.
12222  *
12223  * Return value: (transfer none): The expander column.
12224  **/
12225 GtkTreeViewColumn *
12226 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12227 {
12228   GList *list;
12229
12230   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12231
12232   for (list = tree_view->priv->columns; list; list = list->next)
12233     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12234       return (GtkTreeViewColumn *) list->data;
12235   return NULL;
12236 }
12237
12238
12239 /**
12240  * gtk_tree_view_set_column_drag_function:
12241  * @tree_view: A #GtkTreeView.
12242  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12243  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12244  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12245  *
12246  * Sets a user function for determining where a column may be dropped when
12247  * dragged.  This function is called on every column pair in turn at the
12248  * beginning of a column drag to determine where a drop can take place.  The
12249  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12250  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12251  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12252  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12253  * @tree_view reverts to the default behavior of allowing all columns to be
12254  * dropped everywhere.
12255  **/
12256 void
12257 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12258                                         GtkTreeViewColumnDropFunc  func,
12259                                         gpointer                   user_data,
12260                                         GDestroyNotify             destroy)
12261 {
12262   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12263
12264   if (tree_view->priv->column_drop_func_data_destroy)
12265     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12266
12267   tree_view->priv->column_drop_func = func;
12268   tree_view->priv->column_drop_func_data = user_data;
12269   tree_view->priv->column_drop_func_data_destroy = destroy;
12270 }
12271
12272 /**
12273  * gtk_tree_view_scroll_to_point:
12274  * @tree_view: a #GtkTreeView
12275  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12276  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12277  *
12278  * Scrolls the tree view such that the top-left corner of the visible
12279  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12280  * in tree coordinates.  The @tree_view must be realized before
12281  * this function is called.  If it isn't, you probably want to be
12282  * using gtk_tree_view_scroll_to_cell().
12283  *
12284  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12285  **/
12286 void
12287 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12288                                gint         tree_x,
12289                                gint         tree_y)
12290 {
12291   GtkAdjustment *hadj;
12292   GtkAdjustment *vadj;
12293
12294   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12295   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12296
12297   hadj = tree_view->priv->hadjustment;
12298   vadj = tree_view->priv->vadjustment;
12299
12300   if (tree_x != -1)
12301     gtk_adjustment_set_value (hadj, tree_x);
12302   if (tree_y != -1)
12303     gtk_adjustment_set_value (vadj, tree_y);
12304 }
12305
12306 /**
12307  * gtk_tree_view_scroll_to_cell:
12308  * @tree_view: A #GtkTreeView.
12309  * @path: (allow-none): The path of the row to move to, or %NULL.
12310  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12311  * @use_align: whether to use alignment arguments, or %FALSE.
12312  * @row_align: The vertical alignment of the row specified by @path.
12313  * @col_align: The horizontal alignment of the column specified by @column.
12314  *
12315  * Moves the alignments of @tree_view to the position specified by @column and
12316  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12317  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12318  * or @path need to be non-%NULL.  @row_align determines where the row is
12319  * placed, and @col_align determines where @column is placed.  Both are expected
12320  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12321  * right/bottom alignment, 0.5 means center.
12322  *
12323  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12324  * tree does the minimum amount of work to scroll the cell onto the screen.
12325  * This means that the cell will be scrolled to the edge closest to its current
12326  * position.  If the cell is currently visible on the screen, nothing is done.
12327  *
12328  * This function only works if the model is set, and @path is a valid row on the
12329  * model.  If the model changes before the @tree_view is realized, the centered
12330  * path will be modified to reflect this change.
12331  **/
12332 void
12333 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12334                               GtkTreePath       *path,
12335                               GtkTreeViewColumn *column,
12336                               gboolean           use_align,
12337                               gfloat             row_align,
12338                               gfloat             col_align)
12339 {
12340   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12341   g_return_if_fail (tree_view->priv->model != NULL);
12342   g_return_if_fail (tree_view->priv->tree != NULL);
12343   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12344   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12345   g_return_if_fail (path != NULL || column != NULL);
12346
12347 #if 0
12348   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12349            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12350 #endif
12351   row_align = CLAMP (row_align, 0.0, 1.0);
12352   col_align = CLAMP (col_align, 0.0, 1.0);
12353
12354
12355   /* Note: Despite the benefits that come from having one code path for the
12356    * scrolling code, we short-circuit validate_visible_area's immplementation as
12357    * it is much slower than just going to the point.
12358    */
12359   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12360       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12361       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12362       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12363     {
12364       if (tree_view->priv->scroll_to_path)
12365         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12366
12367       tree_view->priv->scroll_to_path = NULL;
12368       tree_view->priv->scroll_to_column = NULL;
12369
12370       if (path)
12371         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12372       if (column)
12373         tree_view->priv->scroll_to_column = column;
12374       tree_view->priv->scroll_to_use_align = use_align;
12375       tree_view->priv->scroll_to_row_align = row_align;
12376       tree_view->priv->scroll_to_col_align = col_align;
12377
12378       install_presize_handler (tree_view);
12379     }
12380   else
12381     {
12382       GdkRectangle cell_rect;
12383       GdkRectangle vis_rect;
12384       gint dest_x, dest_y;
12385
12386       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12387       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12388
12389       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12390
12391       dest_x = vis_rect.x;
12392       dest_y = vis_rect.y;
12393
12394       if (column)
12395         {
12396           if (use_align)
12397             {
12398               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12399             }
12400           else
12401             {
12402               if (cell_rect.x < vis_rect.x)
12403                 dest_x = cell_rect.x;
12404               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12405                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12406             }
12407         }
12408
12409       if (path)
12410         {
12411           if (use_align)
12412             {
12413               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12414               dest_y = MAX (dest_y, 0);
12415             }
12416           else
12417             {
12418               if (cell_rect.y < vis_rect.y)
12419                 dest_y = cell_rect.y;
12420               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12421                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12422             }
12423         }
12424
12425       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12426     }
12427 }
12428
12429 /**
12430  * gtk_tree_view_row_activated:
12431  * @tree_view: A #GtkTreeView
12432  * @path: The #GtkTreePath to be activated.
12433  * @column: The #GtkTreeViewColumn to be activated.
12434  *
12435  * Activates the cell determined by @path and @column.
12436  **/
12437 void
12438 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12439                              GtkTreePath       *path,
12440                              GtkTreeViewColumn *column)
12441 {
12442   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12443
12444   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12445 }
12446
12447
12448 static void
12449 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12450                                           GtkRBNode *node,
12451                                           gpointer   data)
12452 {
12453   GtkTreeView *tree_view = data;
12454
12455   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12456       node->children)
12457     {
12458       GtkTreePath *path;
12459       GtkTreeIter iter;
12460
12461       path = _gtk_tree_view_find_path (tree_view, tree, node);
12462       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12463
12464       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12465
12466       gtk_tree_path_free (path);
12467     }
12468
12469   if (node->children)
12470     _gtk_rbtree_traverse (node->children,
12471                           node->children->root,
12472                           G_PRE_ORDER,
12473                           gtk_tree_view_expand_all_emission_helper,
12474                           tree_view);
12475 }
12476
12477 /**
12478  * gtk_tree_view_expand_all:
12479  * @tree_view: A #GtkTreeView.
12480  *
12481  * Recursively expands all nodes in the @tree_view.
12482  **/
12483 void
12484 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12485 {
12486   GtkTreePath *path;
12487   GtkRBTree *tree;
12488   GtkRBNode *node;
12489
12490   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12491
12492   if (tree_view->priv->tree == NULL)
12493     return;
12494
12495   path = gtk_tree_path_new_first ();
12496   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12497
12498   while (node)
12499     {
12500       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12501       node = _gtk_rbtree_next (tree, node);
12502       gtk_tree_path_next (path);
12503   }
12504
12505   gtk_tree_path_free (path);
12506 }
12507
12508 /**
12509  * gtk_tree_view_collapse_all:
12510  * @tree_view: A #GtkTreeView.
12511  *
12512  * Recursively collapses all visible, expanded nodes in @tree_view.
12513  **/
12514 void
12515 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12516 {
12517   GtkRBTree *tree;
12518   GtkRBNode *node;
12519   GtkTreePath *path;
12520   gint *indices;
12521
12522   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12523
12524   if (tree_view->priv->tree == NULL)
12525     return;
12526
12527   path = gtk_tree_path_new ();
12528   gtk_tree_path_down (path);
12529   indices = gtk_tree_path_get_indices (path);
12530
12531   tree = tree_view->priv->tree;
12532   node = tree->root;
12533   while (node && node->left != tree->nil)
12534     node = node->left;
12535
12536   while (node)
12537     {
12538       if (node->children)
12539         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12540       indices[0]++;
12541       node = _gtk_rbtree_next (tree, node);
12542     }
12543
12544   gtk_tree_path_free (path);
12545 }
12546
12547 /**
12548  * gtk_tree_view_expand_to_path:
12549  * @tree_view: A #GtkTreeView.
12550  * @path: path to a row.
12551  *
12552  * Expands the row at @path. This will also expand all parent rows of
12553  * @path as necessary.
12554  *
12555  * Since: 2.2
12556  **/
12557 void
12558 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12559                               GtkTreePath *path)
12560 {
12561   gint i, depth;
12562   gint *indices;
12563   GtkTreePath *tmp;
12564
12565   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12566   g_return_if_fail (path != NULL);
12567
12568   depth = gtk_tree_path_get_depth (path);
12569   indices = gtk_tree_path_get_indices (path);
12570
12571   tmp = gtk_tree_path_new ();
12572   g_return_if_fail (tmp != NULL);
12573
12574   for (i = 0; i < depth; i++)
12575     {
12576       gtk_tree_path_append_index (tmp, indices[i]);
12577       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12578     }
12579
12580   gtk_tree_path_free (tmp);
12581 }
12582
12583 /* FIXME the bool return values for expand_row and collapse_row are
12584  * not analagous; they should be TRUE if the row had children and
12585  * was not already in the requested state.
12586  */
12587
12588
12589 static gboolean
12590 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12591                                GtkTreePath *path,
12592                                GtkRBTree   *tree,
12593                                GtkRBNode   *node,
12594                                gboolean     open_all,
12595                                gboolean     animate)
12596 {
12597   GtkTreeIter iter;
12598   GtkTreeIter temp;
12599   gboolean expand;
12600
12601   if (animate)
12602     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12603                   "gtk-enable-animations", &animate,
12604                   NULL);
12605
12606   remove_auto_expand_timeout (tree_view);
12607
12608   if (node->children && !open_all)
12609     return FALSE;
12610
12611   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12612     return FALSE;
12613
12614   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12615   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12616     return FALSE;
12617
12618
12619    if (node->children && open_all)
12620     {
12621       gboolean retval = FALSE;
12622       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12623
12624       gtk_tree_path_append_index (tmp_path, 0);
12625       tree = node->children;
12626       node = tree->root;
12627       while (node->left != tree->nil)
12628         node = node->left;
12629       /* try to expand the children */
12630       do
12631         {
12632          gboolean t;
12633          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12634                                             TRUE, animate);
12635          if (t)
12636            retval = TRUE;
12637
12638          gtk_tree_path_next (tmp_path);
12639          node = _gtk_rbtree_next (tree, node);
12640        }
12641       while (node != NULL);
12642
12643       gtk_tree_path_free (tmp_path);
12644
12645       return retval;
12646     }
12647
12648   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12649
12650   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12651     return FALSE;
12652
12653   if (expand)
12654     return FALSE;
12655
12656   node->children = _gtk_rbtree_new ();
12657   node->children->parent_tree = tree;
12658   node->children->parent_node = node;
12659
12660   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12661
12662   gtk_tree_view_build_tree (tree_view,
12663                             node->children,
12664                             &temp,
12665                             gtk_tree_path_get_depth (path) + 1,
12666                             open_all);
12667
12668   if (animate)
12669     {
12670       GtkStyleContext *context;
12671
12672       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12673
12674       gtk_style_context_save (context);
12675       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12676
12677       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12678                                              node, GTK_STATE_ACTIVE, TRUE);
12679
12680       _gtk_style_context_invalidate_animation_areas (context);
12681       gtk_style_context_restore (context);
12682     }
12683
12684   install_presize_handler (tree_view);
12685
12686   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12687   if (open_all && node->children)
12688     {
12689       _gtk_rbtree_traverse (node->children,
12690                             node->children->root,
12691                             G_PRE_ORDER,
12692                             gtk_tree_view_expand_all_emission_helper,
12693                             tree_view);
12694     }
12695   return TRUE;
12696 }
12697
12698
12699 /**
12700  * gtk_tree_view_expand_row:
12701  * @tree_view: a #GtkTreeView
12702  * @path: path to a row
12703  * @open_all: whether to recursively expand, or just expand immediate children
12704  *
12705  * Opens the row so its children are visible.
12706  *
12707  * Return value: %TRUE if the row existed and had children
12708  **/
12709 gboolean
12710 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12711                           GtkTreePath *path,
12712                           gboolean     open_all)
12713 {
12714   GtkRBTree *tree;
12715   GtkRBNode *node;
12716
12717   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12718   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12719   g_return_val_if_fail (path != NULL, FALSE);
12720
12721   if (_gtk_tree_view_find_node (tree_view,
12722                                 path,
12723                                 &tree,
12724                                 &node))
12725     return FALSE;
12726
12727   if (tree != NULL)
12728     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12729   else
12730     return FALSE;
12731 }
12732
12733 static gboolean
12734 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12735                                  GtkTreePath *path,
12736                                  GtkRBTree   *tree,
12737                                  GtkRBNode   *node,
12738                                  gboolean     animate)
12739 {
12740   GtkTreeIter iter;
12741   GtkTreeIter children;
12742   gboolean collapse;
12743   gint x, y;
12744   GList *list;
12745   GdkWindow *child, *parent;
12746
12747   if (animate)
12748     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12749                   "gtk-enable-animations", &animate,
12750                   NULL);
12751
12752   remove_auto_expand_timeout (tree_view);
12753
12754   if (node->children == NULL)
12755     return FALSE;
12756   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12757
12758   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12759
12760   if (collapse)
12761     return FALSE;
12762
12763   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12764    * a chance to prelight the correct node below */
12765
12766   if (tree_view->priv->prelight_tree)
12767     {
12768       GtkRBTree *parent_tree;
12769       GtkRBNode *parent_node;
12770
12771       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12772       parent_node = tree_view->priv->prelight_tree->parent_node;
12773       while (parent_tree)
12774         {
12775           if (parent_tree == tree && parent_node == node)
12776             {
12777               ensure_unprelighted (tree_view);
12778               break;
12779             }
12780           parent_node = parent_tree->parent_node;
12781           parent_tree = parent_tree->parent_tree;
12782         }
12783     }
12784
12785   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12786
12787   for (list = tree_view->priv->columns; list; list = list->next)
12788     {
12789       GtkTreeViewColumn *column = list->data;
12790
12791       if (gtk_tree_view_column_get_visible (column) == FALSE)
12792         continue;
12793       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12794         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12795     }
12796
12797   if (tree_view->priv->destroy_count_func)
12798     {
12799       GtkTreePath *child_path;
12800       gint child_count = 0;
12801       child_path = gtk_tree_path_copy (path);
12802       gtk_tree_path_down (child_path);
12803       if (node->children)
12804         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12805       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12806       gtk_tree_path_free (child_path);
12807     }
12808
12809   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12810     {
12811       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12812
12813       if (gtk_tree_path_is_ancestor (path, cursor_path))
12814         {
12815           gtk_tree_row_reference_free (tree_view->priv->cursor);
12816           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12817                                                                       tree_view->priv->model,
12818                                                                       path);
12819         }
12820       gtk_tree_path_free (cursor_path);
12821     }
12822
12823   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12824     {
12825       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12826       if (gtk_tree_path_is_ancestor (path, anchor_path))
12827         {
12828           gtk_tree_row_reference_free (tree_view->priv->anchor);
12829           tree_view->priv->anchor = NULL;
12830         }
12831       gtk_tree_path_free (anchor_path);
12832     }
12833
12834   /* Stop a pending double click */
12835   tree_view->priv->last_button_x = -1;
12836   tree_view->priv->last_button_y = -1;
12837
12838   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12839     {
12840       _gtk_rbtree_remove (node->children);
12841       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12842     }
12843   else
12844     _gtk_rbtree_remove (node->children);
12845
12846   if (animate)
12847     {
12848       GtkStyleContext *context;
12849
12850       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12851
12852       gtk_style_context_save (context);
12853       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12854
12855       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12856                                              node, GTK_STATE_ACTIVE, FALSE);
12857
12858       _gtk_style_context_invalidate_animation_areas (context);
12859       gtk_style_context_restore (context);
12860     }
12861
12862   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12863     {
12864       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12865     }
12866
12867   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12868
12869   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12870     {
12871       /* now that we've collapsed all rows, we want to try to set the prelight
12872        * again. To do this, we fake a motion event and send it to ourselves. */
12873
12874       child = tree_view->priv->bin_window;
12875       parent = gdk_window_get_parent (child);
12876
12877       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12878         {
12879           GdkEventMotion event;
12880           gint child_x, child_y;
12881
12882           gdk_window_get_position (child, &child_x, &child_y);
12883
12884           event.window = tree_view->priv->bin_window;
12885           event.x = x - child_x;
12886           event.y = y - child_y;
12887
12888           /* despite the fact this isn't a real event, I'm almost positive it will
12889            * never trigger a drag event.  maybe_drag is the only function that uses
12890            * more than just event.x and event.y. */
12891           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12892         }
12893     }
12894
12895   return TRUE;
12896 }
12897
12898 /**
12899  * gtk_tree_view_collapse_row:
12900  * @tree_view: a #GtkTreeView
12901  * @path: path to a row in the @tree_view
12902  *
12903  * Collapses a row (hides its child rows, if they exist).
12904  *
12905  * Return value: %TRUE if the row was collapsed.
12906  **/
12907 gboolean
12908 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12909                             GtkTreePath *path)
12910 {
12911   GtkRBTree *tree;
12912   GtkRBNode *node;
12913
12914   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12915   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12916   g_return_val_if_fail (path != NULL, FALSE);
12917
12918   if (_gtk_tree_view_find_node (tree_view,
12919                                 path,
12920                                 &tree,
12921                                 &node))
12922     return FALSE;
12923
12924   if (tree == NULL || node->children == NULL)
12925     return FALSE;
12926
12927   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12928 }
12929
12930 static void
12931 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12932                                         GtkRBTree              *tree,
12933                                         GtkTreePath            *path,
12934                                         GtkTreeViewMappingFunc  func,
12935                                         gpointer                user_data)
12936 {
12937   GtkRBNode *node;
12938
12939   if (tree == NULL || tree->root == NULL)
12940     return;
12941
12942   node = tree->root;
12943
12944   while (node && node->left != tree->nil)
12945     node = node->left;
12946
12947   while (node)
12948     {
12949       if (node->children)
12950         {
12951           (* func) (tree_view, path, user_data);
12952           gtk_tree_path_down (path);
12953           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12954           gtk_tree_path_up (path);
12955         }
12956       gtk_tree_path_next (path);
12957       node = _gtk_rbtree_next (tree, node);
12958     }
12959 }
12960
12961 /**
12962  * gtk_tree_view_map_expanded_rows:
12963  * @tree_view: A #GtkTreeView
12964  * @func: (scope call): A function to be called
12965  * @data: User data to be passed to the function.
12966  *
12967  * Calls @func on all expanded rows.
12968  **/
12969 void
12970 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12971                                  GtkTreeViewMappingFunc  func,
12972                                  gpointer                user_data)
12973 {
12974   GtkTreePath *path;
12975
12976   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12977   g_return_if_fail (func != NULL);
12978
12979   path = gtk_tree_path_new_first ();
12980
12981   gtk_tree_view_map_expanded_rows_helper (tree_view,
12982                                           tree_view->priv->tree,
12983                                           path, func, user_data);
12984
12985   gtk_tree_path_free (path);
12986 }
12987
12988 /**
12989  * gtk_tree_view_row_expanded:
12990  * @tree_view: A #GtkTreeView.
12991  * @path: A #GtkTreePath to test expansion state.
12992  *
12993  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12994  *
12995  * Return value: %TRUE if #path is expanded.
12996  **/
12997 gboolean
12998 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12999                             GtkTreePath *path)
13000 {
13001   GtkRBTree *tree;
13002   GtkRBNode *node;
13003
13004   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13005   g_return_val_if_fail (path != NULL, FALSE);
13006
13007   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13008
13009   if (node == NULL)
13010     return FALSE;
13011
13012   return (node->children != NULL);
13013 }
13014
13015 /**
13016  * gtk_tree_view_get_reorderable:
13017  * @tree_view: a #GtkTreeView
13018  *
13019  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13020  * gtk_tree_view_set_reorderable().
13021  *
13022  * Return value: %TRUE if the tree can be reordered.
13023  **/
13024 gboolean
13025 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13026 {
13027   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13028
13029   return tree_view->priv->reorderable;
13030 }
13031
13032 /**
13033  * gtk_tree_view_set_reorderable:
13034  * @tree_view: A #GtkTreeView.
13035  * @reorderable: %TRUE, if the tree can be reordered.
13036  *
13037  * This function is a convenience function to allow you to reorder
13038  * models that support the #GtkDragSourceIface and the
13039  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13040  * these.  If @reorderable is %TRUE, then the user can reorder the
13041  * model by dragging and dropping rows. The developer can listen to
13042  * these changes by connecting to the model's row_inserted and
13043  * row_deleted signals. The reordering is implemented by setting up
13044  * the tree view as a drag source and destination. Therefore, drag and
13045  * drop can not be used in a reorderable view for any other purpose.
13046  *
13047  * This function does not give you any degree of control over the order -- any
13048  * reordering is allowed.  If more control is needed, you should probably
13049  * handle drag and drop manually.
13050  **/
13051 void
13052 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13053                                gboolean     reorderable)
13054 {
13055   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13056
13057   reorderable = reorderable != FALSE;
13058
13059   if (tree_view->priv->reorderable == reorderable)
13060     return;
13061
13062   if (reorderable)
13063     {
13064       const GtkTargetEntry row_targets[] = {
13065         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13066       };
13067
13068       gtk_tree_view_enable_model_drag_source (tree_view,
13069                                               GDK_BUTTON1_MASK,
13070                                               row_targets,
13071                                               G_N_ELEMENTS (row_targets),
13072                                               GDK_ACTION_MOVE);
13073       gtk_tree_view_enable_model_drag_dest (tree_view,
13074                                             row_targets,
13075                                             G_N_ELEMENTS (row_targets),
13076                                             GDK_ACTION_MOVE);
13077     }
13078   else
13079     {
13080       gtk_tree_view_unset_rows_drag_source (tree_view);
13081       gtk_tree_view_unset_rows_drag_dest (tree_view);
13082     }
13083
13084   tree_view->priv->reorderable = reorderable;
13085
13086   g_object_notify (G_OBJECT (tree_view), "reorderable");
13087 }
13088
13089 static void
13090 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13091                                GtkTreePath     *path,
13092                                gboolean         clear_and_select,
13093                                gboolean         clamp_node)
13094 {
13095   GtkRBTree *tree = NULL;
13096   GtkRBNode *node = NULL;
13097
13098   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13099     {
13100       GtkTreePath *cursor_path;
13101       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13102       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
13103       gtk_tree_path_free (cursor_path);
13104     }
13105
13106   gtk_tree_row_reference_free (tree_view->priv->cursor);
13107   tree_view->priv->cursor = NULL;
13108
13109   /* One cannot set the cursor on a separator.   Also, if
13110    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13111    * before finding the tree and node belonging to path.  The
13112    * path maps to a non-existing path and we will silently bail out.
13113    * We unset tree and node to avoid further processing.
13114    */
13115   if (!row_is_separator (tree_view, NULL, path)
13116       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
13117     {
13118       tree_view->priv->cursor =
13119           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
13120                                             tree_view->priv->model,
13121                                             path);
13122     }
13123   else
13124     {
13125       tree = NULL;
13126       node = NULL;
13127     }
13128
13129   if (tree != NULL)
13130     {
13131       GtkRBTree *new_tree = NULL;
13132       GtkRBNode *new_node = NULL;
13133
13134       if (clear_and_select && !tree_view->priv->ctrl_pressed)
13135         {
13136           GtkTreeSelectMode mode = 0;
13137
13138           if (tree_view->priv->ctrl_pressed)
13139             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
13140           if (tree_view->priv->shift_pressed)
13141             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13142
13143           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13144                                                     node, tree, path, mode,
13145                                                     FALSE);
13146         }
13147
13148       /* We have to re-find tree and node here again, somebody might have
13149        * cleared the node or the whole tree in the GtkTreeSelection::changed
13150        * callback. If the nodes differ we bail out here.
13151        */
13152       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13153
13154       if (tree != new_tree || node != new_node)
13155         return;
13156
13157       if (clamp_node)
13158         {
13159           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
13160           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13161         }
13162     }
13163
13164   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13165 }
13166
13167 /**
13168  * gtk_tree_view_get_cursor:
13169  * @tree_view: A #GtkTreeView
13170  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13171  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13172  *
13173  * Fills in @path and @focus_column with the current path and focus column.  If
13174  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13175  * currently has focus, then *@focus_column will be %NULL.
13176  *
13177  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13178  * you are done with it.
13179  **/
13180 void
13181 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13182                           GtkTreePath       **path,
13183                           GtkTreeViewColumn **focus_column)
13184 {
13185   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13186
13187   if (path)
13188     {
13189       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13190         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13191       else
13192         *path = NULL;
13193     }
13194
13195   if (focus_column)
13196     {
13197       *focus_column = tree_view->priv->focus_column;
13198     }
13199 }
13200
13201 /**
13202  * gtk_tree_view_set_cursor:
13203  * @tree_view: A #GtkTreeView
13204  * @path: A #GtkTreePath
13205  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13206  * @start_editing: %TRUE if the specified cell should start being edited.
13207  *
13208  * Sets the current keyboard focus to be at @path, and selects it.  This is
13209  * useful when you want to focus the user's attention on a particular row.  If
13210  * @focus_column is not %NULL, then focus is given to the column specified by
13211  * it. Additionally, if @focus_column is specified, and @start_editing is
13212  * %TRUE, then editing should be started in the specified cell.
13213  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13214  * in order to give keyboard focus to the widget.  Please note that editing
13215  * can only happen when the widget is realized.
13216  *
13217  * If @path is invalid for @model, the current cursor (if any) will be unset
13218  * and the function will return without failing.
13219  **/
13220 void
13221 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13222                           GtkTreePath       *path,
13223                           GtkTreeViewColumn *focus_column,
13224                           gboolean           start_editing)
13225 {
13226   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13227                                     NULL, start_editing);
13228 }
13229
13230 /**
13231  * gtk_tree_view_set_cursor_on_cell:
13232  * @tree_view: A #GtkTreeView
13233  * @path: A #GtkTreePath
13234  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13235  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13236  * @start_editing: %TRUE if the specified cell should start being edited.
13237  *
13238  * Sets the current keyboard focus to be at @path, and selects it.  This is
13239  * useful when you want to focus the user's attention on a particular row.  If
13240  * @focus_column is not %NULL, then focus is given to the column specified by
13241  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13242  * contains 2 or more editable or activatable cells, then focus is given to
13243  * the cell specified by @focus_cell. Additionally, if @focus_column is
13244  * specified, and @start_editing is %TRUE, then editing should be started in
13245  * the specified cell.  This function is often followed by
13246  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13247  * widget.  Please note that editing can only happen when the widget is
13248  * realized.
13249  *
13250  * If @path is invalid for @model, the current cursor (if any) will be unset
13251  * and the function will return without failing.
13252  *
13253  * Since: 2.2
13254  **/
13255 void
13256 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13257                                   GtkTreePath       *path,
13258                                   GtkTreeViewColumn *focus_column,
13259                                   GtkCellRenderer   *focus_cell,
13260                                   gboolean           start_editing)
13261 {
13262   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13263   g_return_if_fail (path != NULL);
13264   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13265
13266   if (!tree_view->priv->model)
13267     return;
13268
13269   if (focus_cell)
13270     {
13271       g_return_if_fail (focus_column);
13272       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13273     }
13274
13275   /* cancel the current editing, if it exists */
13276   if (tree_view->priv->edited_column &&
13277       gtk_cell_area_get_edit_widget
13278       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13279     gtk_tree_view_stop_editing (tree_view, TRUE);
13280
13281   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
13282
13283   if (focus_column &&
13284       gtk_tree_view_column_get_visible (focus_column))
13285     {
13286       GList *list;
13287       gboolean column_in_tree = FALSE;
13288
13289       for (list = tree_view->priv->columns; list; list = list->next)
13290         if (list->data == focus_column)
13291           {
13292             column_in_tree = TRUE;
13293             break;
13294           }
13295       g_return_if_fail (column_in_tree);
13296       tree_view->priv->focus_column = focus_column;
13297       if (focus_cell)
13298         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13299       if (start_editing)
13300         gtk_tree_view_start_editing (tree_view, path, TRUE);
13301     }
13302 }
13303
13304 /**
13305  * gtk_tree_view_get_bin_window:
13306  * @tree_view: A #GtkTreeView
13307  *
13308  * Returns the window that @tree_view renders to.
13309  * This is used primarily to compare to <literal>event->window</literal>
13310  * to confirm that the event on @tree_view is on the right window.
13311  *
13312  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13313  *     hasn't been realized yet
13314  **/
13315 GdkWindow *
13316 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13317 {
13318   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13319
13320   return tree_view->priv->bin_window;
13321 }
13322
13323 /**
13324  * gtk_tree_view_get_path_at_pos:
13325  * @tree_view: A #GtkTreeView.
13326  * @x: The x position to be identified (relative to bin_window).
13327  * @y: The y position to be identified (relative to bin_window).
13328  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13329  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13330  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13331  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13332  *
13333  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13334  * (please see gtk_tree_view_get_bin_window()).
13335  * That is, @x and @y are relative to an events coordinates. @x and @y must
13336  * come from an event on the @tree_view only where <literal>event->window ==
13337  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13338  * things like popup menus. If @path is non-%NULL, then it will be filled
13339  * with the #GtkTreePath at that point.  This path should be freed with
13340  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13341  * with the column at that point.  @cell_x and @cell_y return the coordinates
13342  * relative to the cell background (i.e. the @background_area passed to
13343  * gtk_cell_renderer_render()).  This function is only meaningful if
13344  * @tree_view is realized.  Therefore this function will always return %FALSE
13345  * if @tree_view is not realized or does not have a model.
13346  *
13347  * For converting widget coordinates (eg. the ones you get from
13348  * GtkWidget::query-tooltip), please see
13349  * gtk_tree_view_convert_widget_to_bin_window_coords().
13350  *
13351  * Return value: %TRUE if a row exists at that coordinate.
13352  **/
13353 gboolean
13354 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13355                                gint                x,
13356                                gint                y,
13357                                GtkTreePath       **path,
13358                                GtkTreeViewColumn **column,
13359                                gint               *cell_x,
13360                                gint               *cell_y)
13361 {
13362   GtkRBTree *tree;
13363   GtkRBNode *node;
13364   gint y_offset;
13365
13366   g_return_val_if_fail (tree_view != NULL, FALSE);
13367
13368   if (path)
13369     *path = NULL;
13370   if (column)
13371     *column = NULL;
13372
13373   if (tree_view->priv->bin_window == NULL)
13374     return FALSE;
13375
13376   if (tree_view->priv->tree == NULL)
13377     return FALSE;
13378
13379   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13380     return FALSE;
13381
13382   if (x < 0 || y < 0)
13383     return FALSE;
13384
13385   if (column || cell_x)
13386     {
13387       GtkTreeViewColumn *tmp_column;
13388       GtkTreeViewColumn *last_column = NULL;
13389       GList *list;
13390       gint remaining_x = x;
13391       gboolean found = FALSE;
13392       gboolean rtl;
13393       gint width;
13394
13395       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13396       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13397            list;
13398            list = (rtl ? list->prev : list->next))
13399         {
13400           tmp_column = list->data;
13401
13402           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13403             continue;
13404
13405           last_column = tmp_column;
13406           width = gtk_tree_view_column_get_width (tmp_column);
13407           if (remaining_x <= width)
13408             {
13409               found = TRUE;
13410
13411               if (column)
13412                 *column = tmp_column;
13413
13414               if (cell_x)
13415                 *cell_x = remaining_x;
13416
13417               break;
13418             }
13419           remaining_x -= width;
13420         }
13421
13422       /* If found is FALSE and there is a last_column, then it the remainder
13423        * space is in that area
13424        */
13425       if (!found)
13426         {
13427           if (last_column)
13428             {
13429               if (column)
13430                 *column = last_column;
13431
13432               if (cell_x)
13433                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13434             }
13435           else
13436             {
13437               return FALSE;
13438             }
13439         }
13440     }
13441
13442   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13443                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13444                                       &tree, &node);
13445
13446   if (tree == NULL)
13447     return FALSE;
13448
13449   if (cell_y)
13450     *cell_y = y_offset;
13451
13452   if (path)
13453     *path = _gtk_tree_view_find_path (tree_view, tree, node);
13454
13455   return TRUE;
13456 }
13457
13458
13459 static inline gint
13460 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13461                                     GtkRBNode   *node,
13462                                     gint         vertical_separator)
13463 {
13464   int height;
13465
13466   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13467    * i.e. just the cells, no spacing.
13468    *
13469    * The cell area height is at least expander_size - vertical_separator.
13470    * For regular nodes, the height is then at least expander_size. We should
13471    * be able to enforce the expander_size minimum here, because this
13472    * function will not be called for irregular (e.g. separator) rows.
13473    */
13474   height = gtk_tree_view_get_row_height (tree_view, node);
13475   if (height < tree_view->priv->expander_size)
13476     height = tree_view->priv->expander_size;
13477
13478   return height - vertical_separator;
13479 }
13480
13481 static inline gint
13482 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13483                                       GtkRBTree   *tree,
13484                                       GtkRBNode   *node,
13485                                       gint         vertical_separator)
13486 {
13487   int offset;
13488
13489   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13490   offset += vertical_separator / 2;
13491
13492   return offset;
13493 }
13494
13495 /**
13496  * gtk_tree_view_get_cell_area:
13497  * @tree_view: a #GtkTreeView
13498  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13499  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13500  * @rect: (out): rectangle to fill with cell rect
13501  *
13502  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13503  * row specified by @path and the column specified by @column.  If @path is
13504  * %NULL, or points to a path not currently displayed, the @y and @height fields
13505  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13506  * fields will be filled with 0.  The sum of all cell rects does not cover the
13507  * entire tree; there are extra pixels in between rows, for example. The
13508  * returned rectangle is equivalent to the @cell_area passed to
13509  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13510  * realized.
13511  **/
13512 void
13513 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13514                              GtkTreePath        *path,
13515                              GtkTreeViewColumn  *column,
13516                              GdkRectangle       *rect)
13517 {
13518   GtkRBTree *tree = NULL;
13519   GtkRBNode *node = NULL;
13520   gint vertical_separator;
13521   gint horizontal_separator;
13522
13523   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13524   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13525   g_return_if_fail (rect != NULL);
13526   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13527   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13528
13529   gtk_widget_style_get (GTK_WIDGET (tree_view),
13530                         "vertical-separator", &vertical_separator,
13531                         "horizontal-separator", &horizontal_separator,
13532                         NULL);
13533
13534   rect->x = 0;
13535   rect->y = 0;
13536   rect->width = 0;
13537   rect->height = 0;
13538
13539   if (column)
13540     {
13541       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13542       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13543     }
13544
13545   if (path)
13546     {
13547       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13548
13549       /* Get vertical coords */
13550       if ((!ret && tree == NULL) || ret)
13551         return;
13552
13553       if (row_is_separator (tree_view, NULL, path))
13554         {
13555           /* There isn't really a "cell area" for separator, so we
13556            * return the y, height values for background area instead.
13557            */
13558           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13559           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13560         }
13561       else
13562         {
13563           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13564                                                           vertical_separator);
13565           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13566                                                              vertical_separator);
13567         }
13568
13569       if (column &&
13570           gtk_tree_view_is_expander_column (tree_view, column))
13571         {
13572           gint depth = gtk_tree_path_get_depth (path);
13573           gboolean rtl;
13574
13575           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13576
13577           if (!rtl)
13578             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13579           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13580
13581           if (gtk_tree_view_draw_expanders (tree_view))
13582             {
13583               if (!rtl)
13584                 rect->x += depth * tree_view->priv->expander_size;
13585               rect->width -= depth * tree_view->priv->expander_size;
13586             }
13587
13588           rect->width = MAX (rect->width, 0);
13589         }
13590     }
13591 }
13592
13593 static inline gint
13594 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13595                               GtkRBNode   *node)
13596 {
13597   int height;
13598
13599   /* The "background" areas of all rows/cells add up to cover the entire tree.
13600    * The background includes all inter-row and inter-cell spacing.
13601    *
13602    * If the row pointed at by node does not have a height set, we default
13603    * to expander_size, which is the minimum height for regular nodes.
13604    * Non-regular nodes (e.g. separators) can have a height set smaller
13605    * than expander_size and should not be overruled here.
13606    */
13607   height = GTK_RBNODE_GET_HEIGHT (node);
13608   if (height <= 0)
13609     height = tree_view->priv->expander_size;
13610
13611   return height;
13612 }
13613
13614 static inline gint
13615 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13616                                 GtkRBTree   *tree,
13617                                 GtkRBNode   *node)
13618 {
13619   int offset;
13620
13621   offset = _gtk_rbtree_node_find_offset (tree, node);
13622
13623   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13624 }
13625
13626 /**
13627  * gtk_tree_view_get_background_area:
13628  * @tree_view: a #GtkTreeView
13629  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13630  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13631  * @rect: (out): rectangle to fill with cell background rect
13632  *
13633  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13634  * row specified by @path and the column specified by @column.  If @path is
13635  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13636  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13637  * fields will be filled with 0.  The returned rectangle is equivalent to the
13638  * @background_area passed to gtk_cell_renderer_render().  These background
13639  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13640  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13641  * itself, excluding surrounding borders and the tree expander area.
13642  *
13643  **/
13644 void
13645 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13646                                    GtkTreePath        *path,
13647                                    GtkTreeViewColumn  *column,
13648                                    GdkRectangle       *rect)
13649 {
13650   GtkRBTree *tree = NULL;
13651   GtkRBNode *node = NULL;
13652
13653   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13654   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13655   g_return_if_fail (rect != NULL);
13656
13657   rect->x = 0;
13658   rect->y = 0;
13659   rect->width = 0;
13660   rect->height = 0;
13661
13662   if (path)
13663     {
13664       /* Get vertical coords */
13665
13666       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13667           tree == NULL)
13668         return;
13669
13670       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13671       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13672     }
13673
13674   if (column)
13675     {
13676       gint x2 = 0;
13677
13678       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13679       rect->width = x2 - rect->x;
13680     }
13681 }
13682
13683 /**
13684  * gtk_tree_view_get_visible_rect:
13685  * @tree_view: a #GtkTreeView
13686  * @visible_rect: (out): rectangle to fill
13687  *
13688  * Fills @visible_rect with the currently-visible region of the
13689  * buffer, in tree coordinates. Convert to bin_window coordinates with
13690  * gtk_tree_view_convert_tree_to_bin_window_coords().
13691  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13692  * scrollable area of the tree.
13693  **/
13694 void
13695 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13696                                 GdkRectangle *visible_rect)
13697 {
13698   GtkAllocation allocation;
13699   GtkWidget *widget;
13700
13701   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13702
13703   widget = GTK_WIDGET (tree_view);
13704
13705   if (visible_rect)
13706     {
13707       gtk_widget_get_allocation (widget, &allocation);
13708       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13709       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13710       visible_rect->width = allocation.width;
13711       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13712     }
13713 }
13714
13715 /**
13716  * gtk_tree_view_convert_widget_to_tree_coords:
13717  * @tree_view: a #GtkTreeView
13718  * @wx: X coordinate relative to the widget
13719  * @wy: Y coordinate relative to the widget
13720  * @tx: (out): return location for tree X coordinate
13721  * @ty: (out): return location for tree Y coordinate
13722  *
13723  * Converts widget coordinates to coordinates for the
13724  * tree (the full scrollable area of the tree).
13725  *
13726  * Since: 2.12
13727  **/
13728 void
13729 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13730                                              gint         wx,
13731                                              gint         wy,
13732                                              gint        *tx,
13733                                              gint        *ty)
13734 {
13735   gint x, y;
13736
13737   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13738
13739   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13740                                                      wx, wy,
13741                                                      &x, &y);
13742   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13743                                                    x, y,
13744                                                    tx, ty);
13745 }
13746
13747 /**
13748  * gtk_tree_view_convert_tree_to_widget_coords:
13749  * @tree_view: a #GtkTreeView
13750  * @tx: X coordinate relative to the tree
13751  * @ty: Y coordinate relative to the tree
13752  * @wx: (out): return location for widget X coordinate
13753  * @wy: (out): return location for widget Y coordinate
13754  *
13755  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13756  * to widget coordinates.
13757  *
13758  * Since: 2.12
13759  **/
13760 void
13761 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13762                                              gint         tx,
13763                                              gint         ty,
13764                                              gint        *wx,
13765                                              gint        *wy)
13766 {
13767   gint x, y;
13768
13769   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13770
13771   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13772                                                    tx, ty,
13773                                                    &x, &y);
13774   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13775                                                      x, y,
13776                                                      wx, wy);
13777 }
13778
13779 /**
13780  * gtk_tree_view_convert_widget_to_bin_window_coords:
13781  * @tree_view: a #GtkTreeView
13782  * @wx: X coordinate relative to the widget
13783  * @wy: Y coordinate relative to the widget
13784  * @bx: (out): return location for bin_window X coordinate
13785  * @by: (out): return location for bin_window Y coordinate
13786  *
13787  * Converts widget coordinates to coordinates for the bin_window
13788  * (see gtk_tree_view_get_bin_window()).
13789  *
13790  * Since: 2.12
13791  **/
13792 void
13793 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13794                                                    gint         wx,
13795                                                    gint         wy,
13796                                                    gint        *bx,
13797                                                    gint        *by)
13798 {
13799   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13800
13801   if (bx)
13802     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13803   if (by)
13804     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13805 }
13806
13807 /**
13808  * gtk_tree_view_convert_bin_window_to_widget_coords:
13809  * @tree_view: a #GtkTreeView
13810  * @bx: bin_window X coordinate
13811  * @by: bin_window Y coordinate
13812  * @wx: (out): return location for widget X coordinate
13813  * @wy: (out): return location for widget Y coordinate
13814  *
13815  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13816  * to widget relative coordinates.
13817  *
13818  * Since: 2.12
13819  **/
13820 void
13821 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13822                                                    gint         bx,
13823                                                    gint         by,
13824                                                    gint        *wx,
13825                                                    gint        *wy)
13826 {
13827   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13828
13829   if (wx)
13830     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13831   if (wy)
13832     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13833 }
13834
13835 /**
13836  * gtk_tree_view_convert_tree_to_bin_window_coords:
13837  * @tree_view: a #GtkTreeView
13838  * @tx: tree X coordinate
13839  * @ty: tree Y coordinate
13840  * @bx: (out): return location for X coordinate relative to bin_window
13841  * @by: (out): return location for Y coordinate relative to bin_window
13842  *
13843  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13844  * to bin_window coordinates.
13845  *
13846  * Since: 2.12
13847  **/
13848 void
13849 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13850                                                  gint         tx,
13851                                                  gint         ty,
13852                                                  gint        *bx,
13853                                                  gint        *by)
13854 {
13855   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13856
13857   if (bx)
13858     *bx = tx;
13859   if (by)
13860     *by = ty - tree_view->priv->dy;
13861 }
13862
13863 /**
13864  * gtk_tree_view_convert_bin_window_to_tree_coords:
13865  * @tree_view: a #GtkTreeView
13866  * @bx: X coordinate relative to bin_window
13867  * @by: Y coordinate relative to bin_window
13868  * @tx: (out): return location for tree X coordinate
13869  * @ty: (out): return location for tree Y coordinate
13870  *
13871  * Converts bin_window coordinates to coordinates for the
13872  * tree (the full scrollable area of the tree).
13873  *
13874  * Since: 2.12
13875  **/
13876 void
13877 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13878                                                  gint         bx,
13879                                                  gint         by,
13880                                                  gint        *tx,
13881                                                  gint        *ty)
13882 {
13883   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13884
13885   if (tx)
13886     *tx = bx;
13887   if (ty)
13888     *ty = by + tree_view->priv->dy;
13889 }
13890
13891
13892
13893 /**
13894  * gtk_tree_view_get_visible_range:
13895  * @tree_view: A #GtkTreeView
13896  * @start_path: (out) (allow-none): Return location for start of region,
13897  *              or %NULL.
13898  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13899  *
13900  * Sets @start_path and @end_path to be the first and last visible path.
13901  * Note that there may be invisible paths in between.
13902  *
13903  * The paths should be freed with gtk_tree_path_free() after use.
13904  *
13905  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13906  *
13907  * Since: 2.8
13908  **/
13909 gboolean
13910 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13911                                  GtkTreePath **start_path,
13912                                  GtkTreePath **end_path)
13913 {
13914   GtkRBTree *tree;
13915   GtkRBNode *node;
13916   gboolean retval;
13917
13918   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13919
13920   if (!tree_view->priv->tree)
13921     return FALSE;
13922
13923   retval = TRUE;
13924
13925   if (start_path)
13926     {
13927       _gtk_rbtree_find_offset (tree_view->priv->tree,
13928                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13929                                &tree, &node);
13930       if (node)
13931         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13932       else
13933         retval = FALSE;
13934     }
13935
13936   if (end_path)
13937     {
13938       gint y;
13939
13940       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
13941         y = tree_view->priv->height - 1;
13942       else
13943         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
13944
13945       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13946       if (node)
13947         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13948       else
13949         retval = FALSE;
13950     }
13951
13952   return retval;
13953 }
13954
13955 /**
13956  * gtk_tree_view_is_blank_at_pos:
13957  * @tree_view: A #GtkTreeView
13958  * @x: The x position to be identified (relative to bin_window)
13959  * @y: The y position to be identified (relative to bin_window)
13960  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13961  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13962  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13963  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13964  *
13965  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
13966  * cell content nor an expander arrow is drawn at the location. If so, the
13967  * location can be considered as the background. You might wish to take
13968  * special action on clicks on the background, such as clearing a current
13969  * selection, having a custom context menu or starting rubber banding.
13970  *
13971  * The @x and @y coordinate that are provided must be relative to bin_window
13972  * coordinates.  That is, @x and @y must come from an event on @tree_view
13973  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
13974  *
13975  * For converting widget coordinates (eg. the ones you get from
13976  * GtkWidget::query-tooltip), please see
13977  * gtk_tree_view_convert_widget_to_bin_window_coords().
13978  *
13979  * The @path, @column, @cell_x and @cell_y arguments will be filled in
13980  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
13981  * gtk_tree_view_get_path_at_pos() for more information.
13982  *
13983  * Return value: %TRUE if the area at the given coordinates is blank,
13984  * %FALSE otherwise.
13985  *
13986  * Since: 3.0
13987  */
13988 gboolean
13989 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
13990                                gint                x,
13991                                gint                y,
13992                                GtkTreePath       **path,
13993                                GtkTreeViewColumn **column,
13994                                gint               *cell_x,
13995                                gint               *cell_y)
13996 {
13997   GtkRBTree *tree;
13998   GtkRBNode *node;
13999   GtkTreeIter iter;
14000   GtkTreePath *real_path;
14001   GtkTreeViewColumn *real_column;
14002   GdkRectangle cell_area, background_area;
14003
14004   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14005
14006   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14007                                       &real_path, &real_column,
14008                                       cell_x, cell_y))
14009     /* If there's no path here, it is blank */
14010     return TRUE;
14011
14012   if (path)
14013     *path = real_path;
14014
14015   if (column)
14016     *column = real_column;
14017
14018   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14019   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14020
14021   /* Check if there's an expander arrow at (x, y) */
14022   if (real_column == tree_view->priv->expander_column
14023       && gtk_tree_view_draw_expanders (tree_view))
14024     {
14025       gboolean over_arrow;
14026
14027       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14028
14029       if (over_arrow)
14030         {
14031           if (!path)
14032             gtk_tree_path_free (real_path);
14033           return FALSE;
14034         }
14035     }
14036
14037   /* Otherwise, have the column see if there's a cell at (x, y) */
14038   gtk_tree_view_column_cell_set_cell_data (real_column,
14039                                            tree_view->priv->model,
14040                                            &iter,
14041                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14042                                            node->children ? TRUE : FALSE);
14043
14044   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14045                                      &background_area);
14046   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14047                                &cell_area);
14048
14049   if (!path)
14050     gtk_tree_path_free (real_path);
14051
14052   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14053                                                 &cell_area,
14054                                                 &background_area,
14055                                                 x, y);
14056 }
14057
14058 static void
14059 unset_reorderable (GtkTreeView *tree_view)
14060 {
14061   if (tree_view->priv->reorderable)
14062     {
14063       tree_view->priv->reorderable = FALSE;
14064       g_object_notify (G_OBJECT (tree_view), "reorderable");
14065     }
14066 }
14067
14068 /**
14069  * gtk_tree_view_enable_model_drag_source:
14070  * @tree_view: a #GtkTreeView
14071  * @start_button_mask: Mask of allowed buttons to start drag
14072  * @targets: (array length=n_targets): the table of targets that the drag will support
14073  * @n_targets: the number of items in @targets
14074  * @actions: the bitmask of possible actions for a drag from this
14075  *    widget
14076  *
14077  * Turns @tree_view into a drag source for automatic DND. Calling this
14078  * method sets #GtkTreeView:reorderable to %FALSE.
14079  **/
14080 void
14081 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14082                                         GdkModifierType           start_button_mask,
14083                                         const GtkTargetEntry     *targets,
14084                                         gint                      n_targets,
14085                                         GdkDragAction             actions)
14086 {
14087   TreeViewDragInfo *di;
14088
14089   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14090
14091   gtk_drag_source_set (GTK_WIDGET (tree_view),
14092                        0,
14093                        targets,
14094                        n_targets,
14095                        actions);
14096
14097   di = ensure_info (tree_view);
14098
14099   di->start_button_mask = start_button_mask;
14100   di->source_actions = actions;
14101   di->source_set = TRUE;
14102
14103   unset_reorderable (tree_view);
14104 }
14105
14106 /**
14107  * gtk_tree_view_enable_model_drag_dest:
14108  * @tree_view: a #GtkTreeView
14109  * @targets: (array length=n_targets): the table of targets that
14110  *           the drag will support
14111  * @n_targets: the number of items in @targets
14112  * @actions: the bitmask of possible actions for a drag from this
14113  *    widget
14114  *
14115  * Turns @tree_view into a drop destination for automatic DND. Calling
14116  * this method sets #GtkTreeView:reorderable to %FALSE.
14117  **/
14118 void
14119 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14120                                       const GtkTargetEntry     *targets,
14121                                       gint                      n_targets,
14122                                       GdkDragAction             actions)
14123 {
14124   TreeViewDragInfo *di;
14125
14126   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14127
14128   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14129                      0,
14130                      targets,
14131                      n_targets,
14132                      actions);
14133
14134   di = ensure_info (tree_view);
14135   di->dest_set = TRUE;
14136
14137   unset_reorderable (tree_view);
14138 }
14139
14140 /**
14141  * gtk_tree_view_unset_rows_drag_source:
14142  * @tree_view: a #GtkTreeView
14143  *
14144  * Undoes the effect of
14145  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14146  * #GtkTreeView:reorderable to %FALSE.
14147  **/
14148 void
14149 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14150 {
14151   TreeViewDragInfo *di;
14152
14153   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14154
14155   di = get_info (tree_view);
14156
14157   if (di)
14158     {
14159       if (di->source_set)
14160         {
14161           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14162           di->source_set = FALSE;
14163         }
14164
14165       if (!di->dest_set && !di->source_set)
14166         remove_info (tree_view);
14167     }
14168
14169   unset_reorderable (tree_view);
14170 }
14171
14172 /**
14173  * gtk_tree_view_unset_rows_drag_dest:
14174  * @tree_view: a #GtkTreeView
14175  *
14176  * Undoes the effect of
14177  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14178  * #GtkTreeView:reorderable to %FALSE.
14179  **/
14180 void
14181 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14182 {
14183   TreeViewDragInfo *di;
14184
14185   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14186
14187   di = get_info (tree_view);
14188
14189   if (di)
14190     {
14191       if (di->dest_set)
14192         {
14193           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14194           di->dest_set = FALSE;
14195         }
14196
14197       if (!di->dest_set && !di->source_set)
14198         remove_info (tree_view);
14199     }
14200
14201   unset_reorderable (tree_view);
14202 }
14203
14204 /**
14205  * gtk_tree_view_set_drag_dest_row:
14206  * @tree_view: a #GtkTreeView
14207  * @path: (allow-none): The path of the row to highlight, or %NULL.
14208  * @pos: Specifies whether to drop before, after or into the row
14209  *
14210  * Sets the row that is highlighted for feedback.
14211  **/
14212 void
14213 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14214                                  GtkTreePath            *path,
14215                                  GtkTreeViewDropPosition pos)
14216 {
14217   GtkTreePath *current_dest;
14218
14219   /* Note; this function is exported to allow a custom DND
14220    * implementation, so it can't touch TreeViewDragInfo
14221    */
14222
14223   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14224
14225   current_dest = NULL;
14226
14227   if (tree_view->priv->drag_dest_row)
14228     {
14229       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14230       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14231     }
14232
14233   /* special case a drop on an empty model */
14234   tree_view->priv->empty_view_drop = 0;
14235
14236   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14237       && gtk_tree_path_get_depth (path) == 1
14238       && gtk_tree_path_get_indices (path)[0] == 0)
14239     {
14240       gint n_children;
14241
14242       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14243                                                    NULL);
14244
14245       if (!n_children)
14246         tree_view->priv->empty_view_drop = 1;
14247     }
14248
14249   tree_view->priv->drag_dest_pos = pos;
14250
14251   if (path)
14252     {
14253       tree_view->priv->drag_dest_row =
14254         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14255       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14256     }
14257   else
14258     tree_view->priv->drag_dest_row = NULL;
14259
14260   if (current_dest)
14261     {
14262       GtkRBTree *tree, *new_tree;
14263       GtkRBNode *node, *new_node;
14264
14265       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14266       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14267
14268       if (tree && node)
14269         {
14270           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14271           if (new_tree && new_node)
14272             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14273
14274           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14275           if (new_tree && new_node)
14276             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14277         }
14278       gtk_tree_path_free (current_dest);
14279     }
14280 }
14281
14282 /**
14283  * gtk_tree_view_get_drag_dest_row:
14284  * @tree_view: a #GtkTreeView
14285  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14286  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14287  *
14288  * Gets information about the row that is highlighted for feedback.
14289  **/
14290 void
14291 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14292                                  GtkTreePath             **path,
14293                                  GtkTreeViewDropPosition  *pos)
14294 {
14295   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14296
14297   if (path)
14298     {
14299       if (tree_view->priv->drag_dest_row)
14300         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14301       else
14302         {
14303           if (tree_view->priv->empty_view_drop)
14304             *path = gtk_tree_path_new_from_indices (0, -1);
14305           else
14306             *path = NULL;
14307         }
14308     }
14309
14310   if (pos)
14311     *pos = tree_view->priv->drag_dest_pos;
14312 }
14313
14314 /**
14315  * gtk_tree_view_get_dest_row_at_pos:
14316  * @tree_view: a #GtkTreeView
14317  * @drag_x: the position to determine the destination row for
14318  * @drag_y: the position to determine the destination row for
14319  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14320  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14321  *
14322  * Determines the destination row for a given position.  @drag_x and
14323  * @drag_y are expected to be in widget coordinates.  This function is only
14324  * meaningful if @tree_view is realized.  Therefore this function will always
14325  * return %FALSE if @tree_view is not realized or does not have a model.
14326  *
14327  * Return value: whether there is a row at the given position, %TRUE if this
14328  * is indeed the case.
14329  **/
14330 gboolean
14331 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14332                                    gint                     drag_x,
14333                                    gint                     drag_y,
14334                                    GtkTreePath            **path,
14335                                    GtkTreeViewDropPosition *pos)
14336 {
14337   gint cell_y;
14338   gint bin_x, bin_y;
14339   gdouble offset_into_row;
14340   gdouble third;
14341   GdkRectangle cell;
14342   GtkTreeViewColumn *column = NULL;
14343   GtkTreePath *tmp_path = NULL;
14344
14345   /* Note; this function is exported to allow a custom DND
14346    * implementation, so it can't touch TreeViewDragInfo
14347    */
14348
14349   g_return_val_if_fail (tree_view != NULL, FALSE);
14350   g_return_val_if_fail (drag_x >= 0, FALSE);
14351   g_return_val_if_fail (drag_y >= 0, FALSE);
14352
14353   if (path)
14354     *path = NULL;
14355
14356   if (tree_view->priv->bin_window == NULL)
14357     return FALSE;
14358
14359   if (tree_view->priv->tree == NULL)
14360     return FALSE;
14361
14362   /* If in the top third of a row, we drop before that row; if
14363    * in the bottom third, drop after that row; if in the middle,
14364    * and the row has children, drop into the row.
14365    */
14366   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14367                                                      &bin_x, &bin_y);
14368
14369   if (!gtk_tree_view_get_path_at_pos (tree_view,
14370                                       bin_x,
14371                                       bin_y,
14372                                       &tmp_path,
14373                                       &column,
14374                                       NULL,
14375                                       &cell_y))
14376     return FALSE;
14377
14378   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14379                                      &cell);
14380
14381   offset_into_row = cell_y;
14382
14383   if (path)
14384     *path = tmp_path;
14385   else
14386     gtk_tree_path_free (tmp_path);
14387
14388   tmp_path = NULL;
14389
14390   third = cell.height / 3.0;
14391
14392   if (pos)
14393     {
14394       if (offset_into_row < third)
14395         {
14396           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14397         }
14398       else if (offset_into_row < (cell.height / 2.0))
14399         {
14400           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14401         }
14402       else if (offset_into_row < third * 2.0)
14403         {
14404           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14405         }
14406       else
14407         {
14408           *pos = GTK_TREE_VIEW_DROP_AFTER;
14409         }
14410     }
14411
14412   return TRUE;
14413 }
14414
14415
14416
14417 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14418 /**
14419  * gtk_tree_view_create_row_drag_icon:
14420  * @tree_view: a #GtkTreeView
14421  * @path: a #GtkTreePath in @tree_view
14422  *
14423  * Creates a #cairo_surface_t representation of the row at @path.
14424  * This image is used for a drag icon.
14425  *
14426  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14427  **/
14428 cairo_surface_t *
14429 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14430                                     GtkTreePath  *path)
14431 {
14432   GtkTreeIter   iter;
14433   GtkRBTree    *tree;
14434   GtkRBNode    *node;
14435   GtkStyleContext *context;
14436   GtkStateFlags state;
14437   gint cell_offset;
14438   GList *list;
14439   GdkRectangle background_area;
14440   GtkWidget *widget;
14441   gint depth;
14442   /* start drawing inside the black outline */
14443   gint x = 1, y = 1;
14444   cairo_surface_t *surface;
14445   gint bin_window_width;
14446   gboolean is_separator = FALSE;
14447   gboolean rtl, allow_rules;
14448   cairo_t *cr;
14449
14450   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14451   g_return_val_if_fail (path != NULL, NULL);
14452
14453   widget = GTK_WIDGET (tree_view);
14454
14455   if (!gtk_widget_get_realized (widget))
14456     return NULL;
14457
14458   depth = gtk_tree_path_get_depth (path);
14459
14460   _gtk_tree_view_find_node (tree_view,
14461                             path,
14462                             &tree,
14463                             &node);
14464
14465   if (tree == NULL)
14466     return NULL;
14467
14468   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14469                                 &iter,
14470                                 path))
14471     return NULL;
14472
14473   context = gtk_widget_get_style_context (widget);
14474
14475   gtk_style_context_save (context);
14476
14477   state = gtk_widget_get_state_flags (widget);
14478   gtk_style_context_set_state (context, state);
14479
14480   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14481   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14482
14483   gtk_widget_style_get (widget,
14484                         "allow-rules", &allow_rules,
14485                         NULL);
14486
14487   if (allow_rules && tree_view->priv->has_rules)
14488     {
14489       GtkRegionFlags row_flags;
14490
14491       if (_gtk_rbtree_node_find_parity (tree, node))
14492         row_flags = GTK_REGION_ODD;
14493       else
14494         row_flags = GTK_REGION_EVEN;
14495
14496       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14497     }
14498
14499   is_separator = row_is_separator (tree_view, &iter, NULL);
14500
14501   cell_offset = x;
14502
14503   background_area.y = y;
14504   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14505
14506   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14507
14508   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14509                                                CAIRO_CONTENT_COLOR,
14510                                                bin_window_width + 2,
14511                                                background_area.height + 2);
14512
14513   cr = cairo_create (surface);
14514
14515   gtk_render_background (context, cr, 0, 0,
14516                          bin_window_width + 2,
14517                          background_area.height + 2);
14518
14519   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14520
14521   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14522       list;
14523       list = (rtl ? list->prev : list->next))
14524     {
14525       GtkTreeViewColumn *column = list->data;
14526       GdkRectangle cell_area;
14527       gint vertical_separator;
14528
14529       if (!gtk_tree_view_column_get_visible (column))
14530         continue;
14531
14532       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14533                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14534                                                node->children?TRUE:FALSE);
14535
14536       background_area.x = cell_offset;
14537       background_area.width = gtk_tree_view_column_get_width (column);
14538
14539       gtk_widget_style_get (widget,
14540                             "vertical-separator", &vertical_separator,
14541                             NULL);
14542
14543       cell_area = background_area;
14544
14545       cell_area.y += vertical_separator / 2;
14546       cell_area.height -= vertical_separator;
14547
14548       if (gtk_tree_view_is_expander_column (tree_view, column))
14549         {
14550           if (!rtl)
14551             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14552           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14553
14554           if (gtk_tree_view_draw_expanders (tree_view))
14555             {
14556               if (!rtl)
14557                 cell_area.x += depth * tree_view->priv->expander_size;
14558               cell_area.width -= depth * tree_view->priv->expander_size;
14559             }
14560         }
14561
14562       if (gtk_tree_view_column_cell_is_visible (column))
14563         {
14564           if (is_separator)
14565             gtk_render_line (context, cr,
14566                              cell_area.x,
14567                              cell_area.y + cell_area.height / 2,
14568                              cell_area.x + cell_area.width,
14569                              cell_area.y + cell_area.height / 2);
14570           else
14571             _gtk_tree_view_column_cell_render (column,
14572                                                cr,
14573                                                &background_area,
14574                                                &cell_area,
14575                                                0, FALSE);
14576         }
14577       cell_offset += gtk_tree_view_column_get_width (column);
14578     }
14579
14580   cairo_set_source_rgb (cr, 0, 0, 0);
14581   cairo_rectangle (cr,
14582                    0.5, 0.5,
14583                    bin_window_width + 1,
14584                    background_area.height + 1);
14585   cairo_set_line_width (cr, 1.0);
14586   cairo_stroke (cr);
14587
14588   cairo_destroy (cr);
14589
14590   cairo_surface_set_device_offset (surface, 2, 2);
14591
14592   gtk_style_context_restore (context);
14593
14594   return surface;
14595 }
14596
14597
14598 /**
14599  * gtk_tree_view_set_destroy_count_func:
14600  * @tree_view: A #GtkTreeView
14601  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14602  * @data: (allow-none): User data to be passed to @func, or %NULL
14603  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14604  *
14605  * This function should almost never be used.  It is meant for private use by
14606  * ATK for determining the number of visible children that are removed when the
14607  * user collapses a row, or a row is deleted.
14608  **/
14609 void
14610 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14611                                       GtkTreeDestroyCountFunc  func,
14612                                       gpointer                 data,
14613                                       GDestroyNotify           destroy)
14614 {
14615   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14616
14617   if (tree_view->priv->destroy_count_destroy)
14618     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14619
14620   tree_view->priv->destroy_count_func = func;
14621   tree_view->priv->destroy_count_data = data;
14622   tree_view->priv->destroy_count_destroy = destroy;
14623 }
14624
14625
14626 /*
14627  * Interactive search
14628  */
14629
14630 /**
14631  * gtk_tree_view_set_enable_search:
14632  * @tree_view: A #GtkTreeView
14633  * @enable_search: %TRUE, if the user can search interactively
14634  *
14635  * If @enable_search is set, then the user can type in text to search through
14636  * the tree interactively (this is sometimes called "typeahead find").
14637  *
14638  * Note that even if this is %FALSE, the user can still initiate a search
14639  * using the "start-interactive-search" key binding.
14640  */
14641 void
14642 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14643                                  gboolean     enable_search)
14644 {
14645   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14646
14647   enable_search = !!enable_search;
14648
14649   if (tree_view->priv->enable_search != enable_search)
14650     {
14651        tree_view->priv->enable_search = enable_search;
14652        g_object_notify (G_OBJECT (tree_view), "enable-search");
14653     }
14654 }
14655
14656 /**
14657  * gtk_tree_view_get_enable_search:
14658  * @tree_view: A #GtkTreeView
14659  *
14660  * Returns whether or not the tree allows to start interactive searching
14661  * by typing in text.
14662  *
14663  * Return value: whether or not to let the user search interactively
14664  */
14665 gboolean
14666 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14667 {
14668   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14669
14670   return tree_view->priv->enable_search;
14671 }
14672
14673
14674 /**
14675  * gtk_tree_view_get_search_column:
14676  * @tree_view: A #GtkTreeView
14677  *
14678  * Gets the column searched on by the interactive search code.
14679  *
14680  * Return value: the column the interactive search code searches in.
14681  */
14682 gint
14683 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14684 {
14685   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14686
14687   return (tree_view->priv->search_column);
14688 }
14689
14690 /**
14691  * gtk_tree_view_set_search_column:
14692  * @tree_view: A #GtkTreeView
14693  * @column: the column of the model to search in, or -1 to disable searching
14694  *
14695  * Sets @column as the column where the interactive search code should
14696  * search in for the current model.
14697  *
14698  * If the search column is set, users can use the "start-interactive-search"
14699  * key binding to bring up search popup. The enable-search property controls
14700  * whether simply typing text will also start an interactive search.
14701  *
14702  * Note that @column refers to a column of the current model. The search
14703  * column is reset to -1 when the model is changed.
14704  */
14705 void
14706 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14707                                  gint         column)
14708 {
14709   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14710   g_return_if_fail (column >= -1);
14711
14712   if (tree_view->priv->search_column == column)
14713     return;
14714
14715   tree_view->priv->search_column = column;
14716   g_object_notify (G_OBJECT (tree_view), "search-column");
14717 }
14718
14719 /**
14720  * gtk_tree_view_get_search_equal_func: (skip)
14721  * @tree_view: A #GtkTreeView
14722  *
14723  * Returns the compare function currently in use.
14724  *
14725  * Return value: the currently used compare function for the search code.
14726  */
14727
14728 GtkTreeViewSearchEqualFunc
14729 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14730 {
14731   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14732
14733   return tree_view->priv->search_equal_func;
14734 }
14735
14736 /**
14737  * gtk_tree_view_set_search_equal_func:
14738  * @tree_view: A #GtkTreeView
14739  * @search_equal_func: the compare function to use during the search
14740  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14741  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14742  *
14743  * Sets the compare function for the interactive search capabilities; note
14744  * that somewhat like strcmp() returning 0 for equality
14745  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14746  **/
14747 void
14748 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14749                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14750                                      gpointer                    search_user_data,
14751                                      GDestroyNotify              search_destroy)
14752 {
14753   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14754   g_return_if_fail (search_equal_func != NULL);
14755
14756   if (tree_view->priv->search_destroy)
14757     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14758
14759   tree_view->priv->search_equal_func = search_equal_func;
14760   tree_view->priv->search_user_data = search_user_data;
14761   tree_view->priv->search_destroy = search_destroy;
14762   if (tree_view->priv->search_equal_func == NULL)
14763     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14764 }
14765
14766 /**
14767  * gtk_tree_view_get_search_entry:
14768  * @tree_view: A #GtkTreeView
14769  *
14770  * Returns the #GtkEntry which is currently in use as interactive search
14771  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14772  * will be returned.
14773  *
14774  * Return value: (transfer none): the entry currently in use as search entry.
14775  *
14776  * Since: 2.10
14777  */
14778 GtkEntry *
14779 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14780 {
14781   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14782
14783   if (tree_view->priv->search_custom_entry_set)
14784     return GTK_ENTRY (tree_view->priv->search_entry);
14785
14786   return NULL;
14787 }
14788
14789 /**
14790  * gtk_tree_view_set_search_entry:
14791  * @tree_view: A #GtkTreeView
14792  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14793  *
14794  * Sets the entry which the interactive search code will use for this
14795  * @tree_view.  This is useful when you want to provide a search entry
14796  * in our interface at all time at a fixed position.  Passing %NULL for
14797  * @entry will make the interactive search code use the built-in popup
14798  * entry again.
14799  *
14800  * Since: 2.10
14801  */
14802 void
14803 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14804                                 GtkEntry    *entry)
14805 {
14806   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14807   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14808
14809   if (tree_view->priv->search_custom_entry_set)
14810     {
14811       if (tree_view->priv->search_entry_changed_id)
14812         {
14813           g_signal_handler_disconnect (tree_view->priv->search_entry,
14814                                        tree_view->priv->search_entry_changed_id);
14815           tree_view->priv->search_entry_changed_id = 0;
14816         }
14817       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14818                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14819                                             tree_view);
14820
14821       g_object_unref (tree_view->priv->search_entry);
14822     }
14823   else if (tree_view->priv->search_window)
14824     {
14825       gtk_widget_destroy (tree_view->priv->search_window);
14826
14827       tree_view->priv->search_window = NULL;
14828     }
14829
14830   if (entry)
14831     {
14832       tree_view->priv->search_entry = g_object_ref (entry);
14833       tree_view->priv->search_custom_entry_set = TRUE;
14834
14835       if (tree_view->priv->search_entry_changed_id == 0)
14836         {
14837           tree_view->priv->search_entry_changed_id =
14838             g_signal_connect (tree_view->priv->search_entry, "changed",
14839                               G_CALLBACK (gtk_tree_view_search_init),
14840                               tree_view);
14841         }
14842
14843         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14844                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14845                           tree_view);
14846
14847         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14848     }
14849   else
14850     {
14851       tree_view->priv->search_entry = NULL;
14852       tree_view->priv->search_custom_entry_set = FALSE;
14853     }
14854 }
14855
14856 /**
14857  * gtk_tree_view_set_search_position_func:
14858  * @tree_view: A #GtkTreeView
14859  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14860  *    to use the default search position function
14861  * @data: (allow-none): user data to pass to @func, or %NULL
14862  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14863  *
14864  * Sets the function to use when positioning the search dialog.
14865  *
14866  * Since: 2.10
14867  **/
14868 void
14869 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14870                                         GtkTreeViewSearchPositionFunc  func,
14871                                         gpointer                       user_data,
14872                                         GDestroyNotify                 destroy)
14873 {
14874   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14875
14876   if (tree_view->priv->search_position_destroy)
14877     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14878
14879   tree_view->priv->search_position_func = func;
14880   tree_view->priv->search_position_user_data = user_data;
14881   tree_view->priv->search_position_destroy = destroy;
14882   if (tree_view->priv->search_position_func == NULL)
14883     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14884 }
14885
14886 /**
14887  * gtk_tree_view_get_search_position_func: (skip)
14888  * @tree_view: A #GtkTreeView
14889  *
14890  * Returns the positioning function currently in use.
14891  *
14892  * Return value: the currently used function for positioning the search dialog.
14893  *
14894  * Since: 2.10
14895  */
14896 GtkTreeViewSearchPositionFunc
14897 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14898 {
14899   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14900
14901   return tree_view->priv->search_position_func;
14902 }
14903
14904
14905 static void
14906 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14907                                   GtkTreeView *tree_view,
14908                                   GdkDevice   *device)
14909 {
14910   if (tree_view->priv->disable_popdown)
14911     return;
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   if (tree_view->priv->typeselect_flush_timeout)
14920     {
14921       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14922       tree_view->priv->typeselect_flush_timeout = 0;
14923     }
14924
14925   if (gtk_widget_get_visible (search_dialog))
14926     {
14927       /* send focus-in event */
14928       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14929       gtk_widget_hide (search_dialog);
14930       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14931       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14932     }
14933 }
14934
14935 static void
14936 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14937                                     GtkWidget   *search_dialog,
14938                                     gpointer     user_data)
14939 {
14940   gint x, y;
14941   gint tree_x, tree_y;
14942   gint tree_width, tree_height;
14943   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14944   GdkScreen *screen = gdk_window_get_screen (tree_window);
14945   GtkRequisition requisition;
14946   gint monitor_num;
14947   GdkRectangle monitor;
14948
14949   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14950   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14951
14952   gtk_widget_realize (search_dialog);
14953
14954   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14955   tree_width = gdk_window_get_width (tree_window);
14956   tree_height = gdk_window_get_height (tree_window);
14957   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
14958
14959   if (tree_x + tree_width > gdk_screen_get_width (screen))
14960     x = gdk_screen_get_width (screen) - requisition.width;
14961   else if (tree_x + tree_width - requisition.width < 0)
14962     x = 0;
14963   else
14964     x = tree_x + tree_width - requisition.width;
14965
14966   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14967     y = gdk_screen_get_height (screen) - requisition.height;
14968   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14969     y = 0;
14970   else
14971     y = tree_y + tree_height;
14972
14973   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14974 }
14975
14976 static void
14977 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14978                                       GtkMenu  *menu,
14979                                       gpointer  data)
14980 {
14981   GtkTreeView *tree_view = (GtkTreeView *)data;
14982
14983   tree_view->priv->disable_popdown = 1;
14984   g_signal_connect (menu, "hide",
14985                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14986 }
14987
14988 /* Because we're visible but offscreen, we just set a flag in the preedit
14989  * callback.
14990  */
14991 static void
14992 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14993                                       GtkTreeView  *tree_view)
14994 {
14995   tree_view->priv->imcontext_changed = 1;
14996   if (tree_view->priv->typeselect_flush_timeout)
14997     {
14998       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14999       tree_view->priv->typeselect_flush_timeout =
15000         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15001                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15002                        tree_view);
15003     }
15004
15005 }
15006
15007 static void
15008 gtk_tree_view_search_activate (GtkEntry    *entry,
15009                                GtkTreeView *tree_view)
15010 {
15011   GtkTreePath *path;
15012   GtkRBNode *node;
15013   GtkRBTree *tree;
15014
15015   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15016                                     tree_view,
15017                                     gtk_get_current_event_device ());
15018
15019   /* If we have a row selected and it's the cursor row, we activate
15020    * the row XXX */
15021   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
15022     {
15023       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
15024
15025       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15026
15027       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
15028         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15029
15030       gtk_tree_path_free (path);
15031     }
15032 }
15033
15034 static gboolean
15035 gtk_tree_view_real_search_enable_popdown (gpointer data)
15036 {
15037   GtkTreeView *tree_view = (GtkTreeView *)data;
15038
15039   tree_view->priv->disable_popdown = 0;
15040
15041   return FALSE;
15042 }
15043
15044 static void
15045 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15046                                      gpointer   data)
15047 {
15048   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15049 }
15050
15051 static gboolean
15052 gtk_tree_view_search_delete_event (GtkWidget *widget,
15053                                    GdkEventAny *event,
15054                                    GtkTreeView *tree_view)
15055 {
15056   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15057
15058   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15059
15060   return TRUE;
15061 }
15062
15063 static gboolean
15064 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15065                                          GdkEventButton *event,
15066                                          GtkTreeView *tree_view)
15067 {
15068   GdkDevice *keyb_device;
15069
15070   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15071
15072   keyb_device = gdk_device_get_associated_device (event->device);
15073   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15074
15075   if (event->window == tree_view->priv->bin_window)
15076     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15077
15078   return TRUE;
15079 }
15080
15081 static gboolean
15082 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15083                                    GdkEventScroll *event,
15084                                    GtkTreeView *tree_view)
15085 {
15086   gboolean retval = FALSE;
15087
15088   if (event->direction == GDK_SCROLL_UP)
15089     {
15090       gtk_tree_view_search_move (widget, tree_view, TRUE);
15091       retval = TRUE;
15092     }
15093   else if (event->direction == GDK_SCROLL_DOWN)
15094     {
15095       gtk_tree_view_search_move (widget, tree_view, FALSE);
15096       retval = TRUE;
15097     }
15098
15099   /* renew the flush timeout */
15100   if (retval && tree_view->priv->typeselect_flush_timeout
15101       && !tree_view->priv->search_custom_entry_set)
15102     {
15103       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15104       tree_view->priv->typeselect_flush_timeout =
15105         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15106                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15107                        tree_view);
15108     }
15109
15110   return retval;
15111 }
15112
15113 static gboolean
15114 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15115                                       GdkEventKey *event,
15116                                       GtkTreeView *tree_view)
15117 {
15118   gboolean retval = FALSE;
15119
15120   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15121   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15122
15123   /* close window and cancel the search */
15124   if (!tree_view->priv->search_custom_entry_set
15125       && (event->keyval == GDK_KEY_Escape ||
15126           event->keyval == GDK_KEY_Tab ||
15127             event->keyval == GDK_KEY_KP_Tab ||
15128             event->keyval == GDK_KEY_ISO_Left_Tab))
15129     {
15130       gtk_tree_view_search_dialog_hide (widget, tree_view,
15131                                         gdk_event_get_device ((GdkEvent *) event));
15132       return TRUE;
15133     }
15134
15135   /* select previous matching iter */
15136   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15137     {
15138       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15139         gtk_widget_error_bell (widget);
15140
15141       retval = TRUE;
15142     }
15143
15144   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
15145       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15146     {
15147       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15148         gtk_widget_error_bell (widget);
15149
15150       retval = TRUE;
15151     }
15152
15153   /* select next matching iter */
15154   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15155     {
15156       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15157         gtk_widget_error_bell (widget);
15158
15159       retval = TRUE;
15160     }
15161
15162   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
15163       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15164     {
15165       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15166         gtk_widget_error_bell (widget);
15167
15168       retval = TRUE;
15169     }
15170
15171   /* renew the flush timeout */
15172   if (retval && tree_view->priv->typeselect_flush_timeout
15173       && !tree_view->priv->search_custom_entry_set)
15174     {
15175       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15176       tree_view->priv->typeselect_flush_timeout =
15177         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15178                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15179                        tree_view);
15180     }
15181
15182   return retval;
15183 }
15184
15185 /*  this function returns FALSE if there is a search string but
15186  *  nothing was found, and TRUE otherwise.
15187  */
15188 static gboolean
15189 gtk_tree_view_search_move (GtkWidget   *window,
15190                            GtkTreeView *tree_view,
15191                            gboolean     up)
15192 {
15193   gboolean ret;
15194   gint len;
15195   gint count = 0;
15196   const gchar *text;
15197   GtkTreeIter iter;
15198   GtkTreeModel *model;
15199   GtkTreeSelection *selection;
15200
15201   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15202
15203   g_return_val_if_fail (text != NULL, FALSE);
15204
15205   len = strlen (text);
15206
15207   if (up && tree_view->priv->selected_iter == 1)
15208     return strlen (text) < 1;
15209
15210   len = strlen (text);
15211
15212   if (len < 1)
15213     return TRUE;
15214
15215   model = gtk_tree_view_get_model (tree_view);
15216   selection = gtk_tree_view_get_selection (tree_view);
15217
15218   /* search */
15219   gtk_tree_selection_unselect_all (selection);
15220   if (!gtk_tree_model_get_iter_first (model, &iter))
15221     return TRUE;
15222
15223   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15224                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15225
15226   if (ret)
15227     {
15228       /* found */
15229       tree_view->priv->selected_iter += up?(-1):(1);
15230       return TRUE;
15231     }
15232   else
15233     {
15234       /* return to old iter */
15235       count = 0;
15236       gtk_tree_model_get_iter_first (model, &iter);
15237       gtk_tree_view_search_iter (model, selection,
15238                                  &iter, text,
15239                                  &count, tree_view->priv->selected_iter);
15240       return FALSE;
15241     }
15242 }
15243
15244 static gboolean
15245 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15246                                  gint          column,
15247                                  const gchar  *key,
15248                                  GtkTreeIter  *iter,
15249                                  gpointer      search_data)
15250 {
15251   gboolean retval = TRUE;
15252   const gchar *str;
15253   gchar *normalized_string;
15254   gchar *normalized_key;
15255   gchar *case_normalized_string = NULL;
15256   gchar *case_normalized_key = NULL;
15257   GValue value = {0,};
15258   GValue transformed = {0,};
15259
15260   gtk_tree_model_get_value (model, iter, column, &value);
15261
15262   g_value_init (&transformed, G_TYPE_STRING);
15263
15264   if (!g_value_transform (&value, &transformed))
15265     {
15266       g_value_unset (&value);
15267       return TRUE;
15268     }
15269
15270   g_value_unset (&value);
15271
15272   str = g_value_get_string (&transformed);
15273   if (!str)
15274     {
15275       g_value_unset (&transformed);
15276       return TRUE;
15277     }
15278
15279   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15280   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15281
15282   if (normalized_string && normalized_key)
15283     {
15284       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15285       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15286
15287       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15288         retval = FALSE;
15289     }
15290
15291   g_value_unset (&transformed);
15292   g_free (normalized_key);
15293   g_free (normalized_string);
15294   g_free (case_normalized_key);
15295   g_free (case_normalized_string);
15296
15297   return retval;
15298 }
15299
15300 static gboolean
15301 gtk_tree_view_search_iter (GtkTreeModel     *model,
15302                            GtkTreeSelection *selection,
15303                            GtkTreeIter      *iter,
15304                            const gchar      *text,
15305                            gint             *count,
15306                            gint              n)
15307 {
15308   GtkRBTree *tree = NULL;
15309   GtkRBNode *node = NULL;
15310   GtkTreePath *path;
15311
15312   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15313
15314   path = gtk_tree_model_get_path (model, iter);
15315   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15316
15317   do
15318     {
15319       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15320         {
15321           (*count)++;
15322           if (*count == n)
15323             {
15324               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15325                                             TRUE, 0.5, 0.0);
15326               gtk_tree_selection_select_iter (selection, iter);
15327               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15328
15329               if (path)
15330                 gtk_tree_path_free (path);
15331
15332               return TRUE;
15333             }
15334         }
15335
15336       if (node->children)
15337         {
15338           gboolean has_child;
15339           GtkTreeIter tmp;
15340
15341           tree = node->children;
15342           node = tree->root;
15343
15344           while (node->left != tree->nil)
15345             node = node->left;
15346
15347           tmp = *iter;
15348           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15349           gtk_tree_path_down (path);
15350
15351           /* sanity check */
15352           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15353         }
15354       else
15355         {
15356           gboolean done = FALSE;
15357
15358           do
15359             {
15360               node = _gtk_rbtree_next (tree, node);
15361
15362               if (node)
15363                 {
15364                   gboolean has_next;
15365
15366                   has_next = gtk_tree_model_iter_next (model, iter);
15367
15368                   done = TRUE;
15369                   gtk_tree_path_next (path);
15370
15371                   /* sanity check */
15372                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15373                 }
15374               else
15375                 {
15376                   gboolean has_parent;
15377                   GtkTreeIter tmp_iter = *iter;
15378
15379                   node = tree->parent_node;
15380                   tree = tree->parent_tree;
15381
15382                   if (!tree)
15383                     {
15384                       if (path)
15385                         gtk_tree_path_free (path);
15386
15387                       /* we've run out of tree, done with this func */
15388                       return FALSE;
15389                     }
15390
15391                   has_parent = gtk_tree_model_iter_parent (model,
15392                                                            iter,
15393                                                            &tmp_iter);
15394                   gtk_tree_path_up (path);
15395
15396                   /* sanity check */
15397                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15398                 }
15399             }
15400           while (!done);
15401         }
15402     }
15403   while (1);
15404
15405   return FALSE;
15406 }
15407
15408 static void
15409 gtk_tree_view_search_init (GtkWidget   *entry,
15410                            GtkTreeView *tree_view)
15411 {
15412   gint ret;
15413   gint count = 0;
15414   const gchar *text;
15415   GtkTreeIter iter;
15416   GtkTreeModel *model;
15417   GtkTreeSelection *selection;
15418
15419   g_return_if_fail (GTK_IS_ENTRY (entry));
15420   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15421
15422   text = gtk_entry_get_text (GTK_ENTRY (entry));
15423
15424   model = gtk_tree_view_get_model (tree_view);
15425   selection = gtk_tree_view_get_selection (tree_view);
15426
15427   /* search */
15428   gtk_tree_selection_unselect_all (selection);
15429   if (tree_view->priv->typeselect_flush_timeout
15430       && !tree_view->priv->search_custom_entry_set)
15431     {
15432       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15433       tree_view->priv->typeselect_flush_timeout =
15434         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15435                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15436                        tree_view);
15437     }
15438
15439   if (*text == '\0')
15440     return;
15441
15442   if (!gtk_tree_model_get_iter_first (model, &iter))
15443     return;
15444
15445   ret = gtk_tree_view_search_iter (model, selection,
15446                                    &iter, text,
15447                                    &count, 1);
15448
15449   if (ret)
15450     tree_view->priv->selected_iter = 1;
15451 }
15452
15453 void
15454 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15455                                 GtkTreeViewColumn *column,
15456                                 GtkCellEditable   *cell_editable)
15457 {
15458   if (tree_view->priv->edited_column == NULL)
15459     return;
15460
15461   g_return_if_fail (column == tree_view->priv->edited_column);
15462
15463   tree_view->priv->edited_column = NULL;
15464
15465   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15466     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15467
15468   gtk_container_remove (GTK_CONTAINER (tree_view),
15469                         GTK_WIDGET (cell_editable));
15470
15471   /* FIXME should only redraw a single node */
15472   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15473 }
15474
15475 static gboolean
15476 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15477                              GtkTreePath *cursor_path,
15478                              gboolean     edit_only)
15479 {
15480   GtkTreeIter iter;
15481   GdkRectangle cell_area;
15482   GtkTreeViewColumn *focus_column;
15483   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15484   gint retval = FALSE;
15485   GtkRBTree *cursor_tree;
15486   GtkRBNode *cursor_node;
15487
15488   g_assert (tree_view->priv->focus_column);
15489   focus_column = tree_view->priv->focus_column;
15490
15491   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15492     return FALSE;
15493
15494   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15495       cursor_node == NULL)
15496     return FALSE;
15497
15498   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15499
15500   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15501
15502   gtk_tree_view_column_cell_set_cell_data (focus_column,
15503                                            tree_view->priv->model,
15504                                            &iter,
15505                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15506                                            cursor_node->children ? TRUE : FALSE);
15507   gtk_tree_view_get_cell_area (tree_view,
15508                                cursor_path,
15509                                focus_column,
15510                                &cell_area);
15511
15512   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15513                               _gtk_tree_view_column_get_context (focus_column),
15514                               GTK_WIDGET (tree_view),
15515                               &cell_area,
15516                               flags, edit_only))
15517     retval = TRUE;
15518
15519   return retval;
15520 }
15521
15522 void
15523 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15524                              GtkTreeViewColumn *column,
15525                              GtkTreePath       *path,
15526                              GtkCellEditable   *cell_editable,
15527                              GdkRectangle      *cell_area)
15528 {
15529   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15530   GtkRequisition requisition;
15531
15532   tree_view->priv->edited_column = column;
15533
15534   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15535   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15536
15537   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15538                                  &requisition, NULL);
15539
15540   tree_view->priv->draw_keyfocus = TRUE;
15541
15542   if (requisition.height < cell_area->height)
15543     {
15544       gint diff = cell_area->height - requisition.height;
15545       gtk_tree_view_put (tree_view,
15546                          GTK_WIDGET (cell_editable),
15547                          cell_area->x, cell_area->y + diff/2,
15548                          cell_area->width, requisition.height);
15549     }
15550   else
15551     {
15552       gtk_tree_view_put (tree_view,
15553                          GTK_WIDGET (cell_editable),
15554                          cell_area->x, cell_area->y,
15555                          cell_area->width, cell_area->height);
15556     }
15557 }
15558
15559 static void
15560 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15561                             gboolean     cancel_editing)
15562 {
15563   GtkTreeViewColumn *column;
15564
15565   if (tree_view->priv->edited_column == NULL)
15566     return;
15567
15568   /*
15569    * This is very evil. We need to do this, because
15570    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15571    * later on. If gtk_tree_view_row_changed notices
15572    * tree_view->priv->edited_column != NULL, it'll call
15573    * gtk_tree_view_stop_editing again. Bad things will happen then.
15574    *
15575    * Please read that again if you intend to modify anything here.
15576    */
15577
15578   column = tree_view->priv->edited_column;
15579   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15580   tree_view->priv->edited_column = NULL;
15581 }
15582
15583
15584 /**
15585  * gtk_tree_view_set_hover_selection:
15586  * @tree_view: a #GtkTreeView
15587  * @hover: %TRUE to enable hover selection mode
15588  *
15589  * Enables of disables the hover selection mode of @tree_view.
15590  * Hover selection makes the selected row follow the pointer.
15591  * Currently, this works only for the selection modes
15592  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15593  *
15594  * Since: 2.6
15595  **/
15596 void
15597 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15598                                    gboolean     hover)
15599 {
15600   hover = hover != FALSE;
15601
15602   if (hover != tree_view->priv->hover_selection)
15603     {
15604       tree_view->priv->hover_selection = hover;
15605
15606       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15607     }
15608 }
15609
15610 /**
15611  * gtk_tree_view_get_hover_selection:
15612  * @tree_view: a #GtkTreeView
15613  *
15614  * Returns whether hover selection mode is turned on for @tree_view.
15615  *
15616  * Return value: %TRUE if @tree_view is in hover selection mode
15617  *
15618  * Since: 2.6
15619  **/
15620 gboolean
15621 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15622 {
15623   return tree_view->priv->hover_selection;
15624 }
15625
15626 /**
15627  * gtk_tree_view_set_hover_expand:
15628  * @tree_view: a #GtkTreeView
15629  * @expand: %TRUE to enable hover selection mode
15630  *
15631  * Enables of disables the hover expansion mode of @tree_view.
15632  * Hover expansion makes rows expand or collapse if the pointer
15633  * moves over them.
15634  *
15635  * Since: 2.6
15636  **/
15637 void
15638 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15639                                 gboolean     expand)
15640 {
15641   expand = expand != FALSE;
15642
15643   if (expand != tree_view->priv->hover_expand)
15644     {
15645       tree_view->priv->hover_expand = expand;
15646
15647       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15648     }
15649 }
15650
15651 /**
15652  * gtk_tree_view_get_hover_expand:
15653  * @tree_view: a #GtkTreeView
15654  *
15655  * Returns whether hover expansion mode is turned on for @tree_view.
15656  *
15657  * Return value: %TRUE if @tree_view is in hover expansion mode
15658  *
15659  * Since: 2.6
15660  **/
15661 gboolean
15662 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15663 {
15664   return tree_view->priv->hover_expand;
15665 }
15666
15667 /**
15668  * gtk_tree_view_set_rubber_banding:
15669  * @tree_view: a #GtkTreeView
15670  * @enable: %TRUE to enable rubber banding
15671  *
15672  * Enables or disables rubber banding in @tree_view.  If the selection mode
15673  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15674  * multiple rows by dragging the mouse.
15675  *
15676  * Since: 2.10
15677  **/
15678 void
15679 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15680                                   gboolean     enable)
15681 {
15682   enable = enable != FALSE;
15683
15684   if (enable != tree_view->priv->rubber_banding_enable)
15685     {
15686       tree_view->priv->rubber_banding_enable = enable;
15687
15688       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15689     }
15690 }
15691
15692 /**
15693  * gtk_tree_view_get_rubber_banding:
15694  * @tree_view: a #GtkTreeView
15695  *
15696  * Returns whether rubber banding is turned on for @tree_view.  If the
15697  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15698  * user to select multiple rows by dragging the mouse.
15699  *
15700  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15701  *
15702  * Since: 2.10
15703  **/
15704 gboolean
15705 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15706 {
15707   return tree_view->priv->rubber_banding_enable;
15708 }
15709
15710 /**
15711  * gtk_tree_view_is_rubber_banding_active:
15712  * @tree_view: a #GtkTreeView
15713  *
15714  * Returns whether a rubber banding operation is currently being done
15715  * in @tree_view.
15716  *
15717  * Return value: %TRUE if a rubber banding operation is currently being
15718  * done in @tree_view.
15719  *
15720  * Since: 2.12
15721  **/
15722 gboolean
15723 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15724 {
15725   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15726
15727   if (tree_view->priv->rubber_banding_enable
15728       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15729     return TRUE;
15730
15731   return FALSE;
15732 }
15733
15734 /**
15735  * gtk_tree_view_get_row_separator_func: (skip)
15736  * @tree_view: a #GtkTreeView
15737  *
15738  * Returns the current row separator function.
15739  *
15740  * Return value: the current row separator function.
15741  *
15742  * Since: 2.6
15743  **/
15744 GtkTreeViewRowSeparatorFunc
15745 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15746 {
15747   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15748
15749   return tree_view->priv->row_separator_func;
15750 }
15751
15752 /**
15753  * gtk_tree_view_set_row_separator_func:
15754  * @tree_view: a #GtkTreeView
15755  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15756  * @data: (allow-none): user data to pass to @func, or %NULL
15757  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15758  *
15759  * Sets the row separator function, which is used to determine
15760  * whether a row should be drawn as a separator. If the row separator
15761  * function is %NULL, no separators are drawn. This is the default value.
15762  *
15763  * Since: 2.6
15764  **/
15765 void
15766 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15767                                       GtkTreeViewRowSeparatorFunc  func,
15768                                       gpointer                     data,
15769                                       GDestroyNotify               destroy)
15770 {
15771   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15772
15773   if (tree_view->priv->row_separator_destroy)
15774     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15775
15776   tree_view->priv->row_separator_func = func;
15777   tree_view->priv->row_separator_data = data;
15778   tree_view->priv->row_separator_destroy = destroy;
15779
15780   /* Have the tree recalculate heights */
15781   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15782   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15783 }
15784
15785
15786 static void
15787 gtk_tree_view_grab_notify (GtkWidget *widget,
15788                            gboolean   was_grabbed)
15789 {
15790   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15791
15792   tree_view->priv->in_grab = !was_grabbed;
15793
15794   if (!was_grabbed)
15795     {
15796       tree_view->priv->pressed_button = -1;
15797
15798       if (tree_view->priv->rubber_band_status)
15799         gtk_tree_view_stop_rubber_band (tree_view);
15800     }
15801 }
15802
15803 static void
15804 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15805                                    GtkStateFlags  previous_state)
15806 {
15807   if (gtk_widget_get_realized (widget))
15808     {
15809       GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15810       GtkStyleContext *context;
15811
15812       context = gtk_widget_get_style_context (widget);
15813       gtk_style_context_set_background (context, tree_view->priv->bin_window);
15814     }
15815
15816   gtk_widget_queue_draw (widget);
15817 }
15818
15819 /**
15820  * gtk_tree_view_get_grid_lines:
15821  * @tree_view: a #GtkTreeView
15822  *
15823  * Returns which grid lines are enabled in @tree_view.
15824  *
15825  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15826  * are enabled.
15827  *
15828  * Since: 2.10
15829  */
15830 GtkTreeViewGridLines
15831 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15832 {
15833   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15834
15835   return tree_view->priv->grid_lines;
15836 }
15837
15838 /**
15839  * gtk_tree_view_set_grid_lines:
15840  * @tree_view: a #GtkTreeView
15841  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15842  * enable.
15843  *
15844  * Sets which grid lines to draw in @tree_view.
15845  *
15846  * Since: 2.10
15847  */
15848 void
15849 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15850                               GtkTreeViewGridLines   grid_lines)
15851 {
15852   GtkTreeViewPrivate *priv;
15853   GtkWidget *widget;
15854   GtkTreeViewGridLines old_grid_lines;
15855
15856   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15857
15858   priv = tree_view->priv;
15859   widget = GTK_WIDGET (tree_view);
15860
15861   old_grid_lines = priv->grid_lines;
15862   priv->grid_lines = grid_lines;
15863
15864   if (gtk_widget_get_realized (widget))
15865     {
15866       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15867           priv->grid_line_width)
15868         {
15869           priv->grid_line_width = 0;
15870         }
15871
15872       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15873           !priv->grid_line_width)
15874         {
15875           gint8 *dash_list;
15876
15877           gtk_widget_style_get (widget,
15878                                 "grid-line-width", &priv->grid_line_width,
15879                                 "grid-line-pattern", (gchar *)&dash_list,
15880                                 NULL);
15881
15882           if (dash_list)
15883             {
15884               priv->grid_line_dashes[0] = dash_list[0];
15885               if (dash_list[0])
15886                 priv->grid_line_dashes[1] = dash_list[1];
15887
15888               g_free (dash_list);
15889             }
15890           else
15891             {
15892               priv->grid_line_dashes[0] = 1;
15893               priv->grid_line_dashes[1] = 1;
15894             }
15895         }
15896     }
15897
15898   if (old_grid_lines != grid_lines)
15899     {
15900       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15901
15902       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15903     }
15904 }
15905
15906 /**
15907  * gtk_tree_view_get_enable_tree_lines:
15908  * @tree_view: a #GtkTreeView.
15909  *
15910  * Returns whether or not tree lines are drawn in @tree_view.
15911  *
15912  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15913  * otherwise.
15914  *
15915  * Since: 2.10
15916  */
15917 gboolean
15918 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15919 {
15920   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15921
15922   return tree_view->priv->tree_lines_enabled;
15923 }
15924
15925 /**
15926  * gtk_tree_view_set_enable_tree_lines:
15927  * @tree_view: a #GtkTreeView
15928  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15929  *
15930  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15931  * This does not have any visible effects for lists.
15932  *
15933  * Since: 2.10
15934  */
15935 void
15936 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15937                                      gboolean     enabled)
15938 {
15939   GtkTreeViewPrivate *priv;
15940   GtkWidget *widget;
15941   gboolean was_enabled;
15942
15943   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15944
15945   enabled = enabled != FALSE;
15946
15947   priv = tree_view->priv;
15948   widget = GTK_WIDGET (tree_view);
15949
15950   was_enabled = priv->tree_lines_enabled;
15951
15952   priv->tree_lines_enabled = enabled;
15953
15954   if (gtk_widget_get_realized (widget))
15955     {
15956       if (!enabled && priv->tree_line_width)
15957         {
15958           priv->tree_line_width = 0;
15959         }
15960
15961       if (enabled && !priv->tree_line_width)
15962         {
15963           gint8 *dash_list;
15964           gtk_widget_style_get (widget,
15965                                 "tree-line-width", &priv->tree_line_width,
15966                                 "tree-line-pattern", (gchar *)&dash_list,
15967                                 NULL);
15968
15969           if (dash_list)
15970             {
15971               priv->tree_line_dashes[0] = dash_list[0];
15972               if (dash_list[0])
15973                 priv->tree_line_dashes[1] = dash_list[1];
15974
15975               g_free (dash_list);
15976             }
15977           else
15978             {
15979               priv->tree_line_dashes[0] = 1;
15980               priv->tree_line_dashes[1] = 1;
15981             }
15982         }
15983     }
15984
15985   if (was_enabled != enabled)
15986     {
15987       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15988
15989       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15990     }
15991 }
15992
15993
15994 /**
15995  * gtk_tree_view_set_show_expanders:
15996  * @tree_view: a #GtkTreeView
15997  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15998  *
15999  * Sets whether to draw and enable expanders and indent child rows in
16000  * @tree_view.  When disabled there will be no expanders visible in trees
16001  * and there will be no way to expand and collapse rows by default.  Also
16002  * note that hiding the expanders will disable the default indentation.  You
16003  * can set a custom indentation in this case using
16004  * gtk_tree_view_set_level_indentation().
16005  * This does not have any visible effects for lists.
16006  *
16007  * Since: 2.12
16008  */
16009 void
16010 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16011                                   gboolean     enabled)
16012 {
16013   gboolean was_enabled;
16014
16015   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16016
16017   enabled = enabled != FALSE;
16018   was_enabled = tree_view->priv->show_expanders;
16019
16020   tree_view->priv->show_expanders = enabled == TRUE;
16021
16022   if (enabled != was_enabled)
16023     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16024 }
16025
16026 /**
16027  * gtk_tree_view_get_show_expanders:
16028  * @tree_view: a #GtkTreeView.
16029  *
16030  * Returns whether or not expanders are drawn in @tree_view.
16031  *
16032  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16033  * otherwise.
16034  *
16035  * Since: 2.12
16036  */
16037 gboolean
16038 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16039 {
16040   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16041
16042   return tree_view->priv->show_expanders;
16043 }
16044
16045 /**
16046  * gtk_tree_view_set_level_indentation:
16047  * @tree_view: a #GtkTreeView
16048  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16049  *
16050  * Sets the amount of extra indentation for child levels to use in @tree_view
16051  * in addition to the default indentation.  The value should be specified in
16052  * pixels, a value of 0 disables this feature and in this case only the default
16053  * indentation will be used.
16054  * This does not have any visible effects for lists.
16055  *
16056  * Since: 2.12
16057  */
16058 void
16059 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16060                                      gint         indentation)
16061 {
16062   tree_view->priv->level_indentation = indentation;
16063
16064   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16065 }
16066
16067 /**
16068  * gtk_tree_view_get_level_indentation:
16069  * @tree_view: a #GtkTreeView.
16070  *
16071  * Returns the amount, in pixels, of extra indentation for child levels
16072  * in @tree_view.
16073  *
16074  * Return value: the amount of extra indentation for child levels in
16075  * @tree_view.  A return value of 0 means that this feature is disabled.
16076  *
16077  * Since: 2.12
16078  */
16079 gint
16080 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16081 {
16082   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16083
16084   return tree_view->priv->level_indentation;
16085 }
16086
16087 /**
16088  * gtk_tree_view_set_tooltip_row:
16089  * @tree_view: a #GtkTreeView
16090  * @tooltip: a #GtkTooltip
16091  * @path: a #GtkTreePath
16092  *
16093  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16094  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16095  * See also gtk_tooltip_set_tip_area().
16096  *
16097  * Since: 2.12
16098  */
16099 void
16100 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16101                                GtkTooltip  *tooltip,
16102                                GtkTreePath *path)
16103 {
16104   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16105   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16106
16107   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16108 }
16109
16110 /**
16111  * gtk_tree_view_set_tooltip_cell:
16112  * @tree_view: a #GtkTreeView
16113  * @tooltip: a #GtkTooltip
16114  * @path: (allow-none): a #GtkTreePath or %NULL
16115  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16116  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16117  *
16118  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16119  * in common.  For example if @path is %NULL and @column is set, the tip
16120  * area will be set to the full area covered by @column.  See also
16121  * gtk_tooltip_set_tip_area().
16122  *
16123  * Note that if @path is not specified and @cell is set and part of a column
16124  * containing the expander, the tooltip might not show and hide at the correct
16125  * position.  In such cases @path must be set to the current node under the
16126  * mouse cursor for this function to operate correctly.
16127  *
16128  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16129  *
16130  * Since: 2.12
16131  */
16132 void
16133 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16134                                 GtkTooltip        *tooltip,
16135                                 GtkTreePath       *path,
16136                                 GtkTreeViewColumn *column,
16137                                 GtkCellRenderer   *cell)
16138 {
16139   GtkAllocation allocation;
16140   GdkRectangle rect;
16141
16142   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16143   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16144   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16145   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16146
16147   /* Determine x values. */
16148   if (column && cell)
16149     {
16150       GdkRectangle tmp;
16151       gint start, width;
16152
16153       /* We always pass in path here, whether it is NULL or not.
16154        * For cells in expander columns path must be specified so that
16155        * we can correctly account for the indentation.  This also means
16156        * that the tooltip is constrained vertically by the "Determine y
16157        * values" code below; this is not a real problem since cells actually
16158        * don't stretch vertically in constrast to columns.
16159        */
16160       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16161       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16162
16163       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16164                                                          tmp.x + start, 0,
16165                                                          &rect.x, NULL);
16166       rect.width = width;
16167     }
16168   else if (column)
16169     {
16170       GdkRectangle tmp;
16171
16172       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16173       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16174                                                          tmp.x, 0,
16175                                                          &rect.x, NULL);
16176       rect.width = tmp.width;
16177     }
16178   else
16179     {
16180       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16181       rect.x = 0;
16182       rect.width = allocation.width;
16183     }
16184
16185   /* Determine y values. */
16186   if (path)
16187     {
16188       GdkRectangle tmp;
16189
16190       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16191       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16192                                                          0, tmp.y,
16193                                                          NULL, &rect.y);
16194       rect.height = tmp.height;
16195     }
16196   else
16197     {
16198       rect.y = 0;
16199       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16200     }
16201
16202   gtk_tooltip_set_tip_area (tooltip, &rect);
16203 }
16204
16205 /**
16206  * gtk_tree_view_get_tooltip_context:
16207  * @tree_view: a #GtkTreeView
16208  * @x: (inout): the x coordinate (relative to widget coordinates)
16209  * @y: (inout): the y coordinate (relative to widget coordinates)
16210  * @keyboard_tip: whether this is a keyboard tooltip or not
16211  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
16212  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16213  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16214  *
16215  * This function is supposed to be used in a #GtkWidget::query-tooltip
16216  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16217  * which are received in the signal handler, should be passed to this
16218  * function without modification.
16219  *
16220  * The return value indicates whether there is a tree view row at the given
16221  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16222  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16223  * @model, @path and @iter which have been provided will be set to point to
16224  * that row and the corresponding model.  @x and @y will always be converted
16225  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16226  *
16227  * Return value: whether or not the given tooltip context points to a row.
16228  *
16229  * Since: 2.12
16230  */
16231 gboolean
16232 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16233                                    gint          *x,
16234                                    gint          *y,
16235                                    gboolean       keyboard_tip,
16236                                    GtkTreeModel **model,
16237                                    GtkTreePath  **path,
16238                                    GtkTreeIter   *iter)
16239 {
16240   GtkTreePath *tmppath = NULL;
16241
16242   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16243   g_return_val_if_fail (x != NULL, FALSE);
16244   g_return_val_if_fail (y != NULL, FALSE);
16245
16246   if (keyboard_tip)
16247     {
16248       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16249
16250       if (!tmppath)
16251         return FALSE;
16252     }
16253   else
16254     {
16255       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16256                                                          x, y);
16257
16258       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16259                                           &tmppath, NULL, NULL, NULL))
16260         return FALSE;
16261     }
16262
16263   if (model)
16264     *model = gtk_tree_view_get_model (tree_view);
16265
16266   if (iter)
16267     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16268                              iter, tmppath);
16269
16270   if (path)
16271     *path = tmppath;
16272   else
16273     gtk_tree_path_free (tmppath);
16274
16275   return TRUE;
16276 }
16277
16278 static gboolean
16279 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16280                                     gint        x,
16281                                     gint        y,
16282                                     gboolean    keyboard_tip,
16283                                     GtkTooltip *tooltip,
16284                                     gpointer    data)
16285 {
16286   GValue value = { 0, };
16287   GValue transformed = { 0, };
16288   GtkTreeIter iter;
16289   GtkTreePath *path;
16290   GtkTreeModel *model;
16291   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16292
16293   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16294                                           &x, &y,
16295                                           keyboard_tip,
16296                                           &model, &path, &iter))
16297     return FALSE;
16298
16299   gtk_tree_model_get_value (model, &iter,
16300                             tree_view->priv->tooltip_column, &value);
16301
16302   g_value_init (&transformed, G_TYPE_STRING);
16303
16304   if (!g_value_transform (&value, &transformed))
16305     {
16306       g_value_unset (&value);
16307       gtk_tree_path_free (path);
16308
16309       return FALSE;
16310     }
16311
16312   g_value_unset (&value);
16313
16314   if (!g_value_get_string (&transformed))
16315     {
16316       g_value_unset (&transformed);
16317       gtk_tree_path_free (path);
16318
16319       return FALSE;
16320     }
16321
16322   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16323   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16324
16325   gtk_tree_path_free (path);
16326   g_value_unset (&transformed);
16327
16328   return TRUE;
16329 }
16330
16331 /**
16332  * gtk_tree_view_set_tooltip_column:
16333  * @tree_view: a #GtkTreeView
16334  * @column: an integer, which is a valid column number for @tree_view's model
16335  *
16336  * If you only plan to have simple (text-only) tooltips on full rows, you
16337  * can use this function to have #GtkTreeView handle these automatically
16338  * for you. @column should be set to the column in @tree_view's model
16339  * containing the tooltip texts, or -1 to disable this feature.
16340  *
16341  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16342  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16343  *
16344  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16345  * so &amp;, &lt;, etc have to be escaped in the text.
16346  *
16347  * Since: 2.12
16348  */
16349 void
16350 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16351                                   gint         column)
16352 {
16353   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16354
16355   if (column == tree_view->priv->tooltip_column)
16356     return;
16357
16358   if (column == -1)
16359     {
16360       g_signal_handlers_disconnect_by_func (tree_view,
16361                                             gtk_tree_view_set_tooltip_query_cb,
16362                                             NULL);
16363       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16364     }
16365   else
16366     {
16367       if (tree_view->priv->tooltip_column == -1)
16368         {
16369           g_signal_connect (tree_view, "query-tooltip",
16370                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16371           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16372         }
16373     }
16374
16375   tree_view->priv->tooltip_column = column;
16376   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16377 }
16378
16379 /**
16380  * gtk_tree_view_get_tooltip_column:
16381  * @tree_view: a #GtkTreeView
16382  *
16383  * Returns the column of @tree_view's model which is being used for
16384  * displaying tooltips on @tree_view's rows.
16385  *
16386  * Return value: the index of the tooltip column that is currently being
16387  * used, or -1 if this is disabled.
16388  *
16389  * Since: 2.12
16390  */
16391 gint
16392 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16393 {
16394   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16395
16396   return tree_view->priv->tooltip_column;
16397 }